chore(binary): unsupported GOOS/GOARCH pair darwin/386

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.drone.jsonnet

@@ -0,0 +1,16 @@
+local pipeline = import 'pipeline.libsonnet';
+local name = 'drone-scp';
+
+[
+  pipeline.test,
+  pipeline.build(name, 'linux', 'amd64'),
+  pipeline.build(name, 'linux', 'arm64'),
+  pipeline.build(name, 'linux', 'arm'),
+  pipeline.release,
+  pipeline.notifications(depends_on=[
+    'linux-amd64',
+    'linux-arm64',
+    'linux-arm',
+    'release-binary',
+  ]),
+]

.drone.yml

@@ -1,63 +1,353 @@
-workspace:
-  base: /srv/app
-  path: src/github.com/appleboy/drone-scp
+---
+kind: pipeline
+name: testing
 
-pipeline:
-  clone:
-    image: plugins/git
-    tags: true
+platform:
+  os: linux
+  arch: amd64
 
-  test:
-    image: appleboy/golang-testing
-    pull: true
-    environment:
-      TAGS: netgo
-      GOPATH: /srv/app
-    commands:
-      - make ssh-server
-      - make vet
-      - make lint
-      # - make test
-      - coverage all
-      - make coverage
-      - make build
-      # build binary for docker image
-      - make static_build
-    when:
-      event: [ push, tag, pull_request ]
+steps:
+- name: vet
+  pull: always
+  image: golang:1.16
+  commands:
+  - make vet
+  volumes:
+  - name: gopath
+    path: /go
 
-  release:
-    image: appleboy/golang-testing
-    pull: true
-    environment:
-      TAGS: netgo
-      GOPATH: /srv/app
-    commands:
-      - make release
-    when:
-      event: [ tag ]
-      branch: [ refs/tags/* ]
+- name: lint
+  pull: always
+  image: golang:1.16
+  commands:
+  - make lint
+  volumes:
+  - name: gopath
+    path: /go
 
-  docker:
-    image: plugins/docker
-    repo: ${DRONE_REPO}
-    tags: [ '${DRONE_TAG}' ]
-    when:
-      event: [ tag ]
-      branch: [ refs/tags/* ]
+- name: misspell
+  pull: always
+  image: golang:1.16
+  commands:
+  - make misspell-check
+  volumes:
+  - name: gopath
+    path: /go
 
-  docker:
-    image: plugins/docker
-    repo: ${DRONE_REPO}
-    tags: [ 'latest' ]
-    when:
-      event: [ push ]
-      branch: [ master ]
+- name: codecov
+  pull: always
+  image: robertstettner/drone-codecov
+  settings:
+    token:
+      from_secret: codecov_token
 
-  github:
-    image: plugins/github-release
+volumes:
+- name: gopath
+  temp: {}
+
+---
+kind: pipeline
+name: linux-amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build-push
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+      exclude:
+      - tag
+
+- name: build-tag
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+    - tag
+
+- name: executable
+  pull: always
+  image: golang:1.16
+  commands:
+  - ./release/linux/amd64/drone-scp --help
+
+- name: dryrun
+  pull: always
+  image: plugins/docker:linux-amd64
+  settings:
+    cache_from: appleboy/drone-scp
+    dockerfile: docker/Dockerfile.linux.amd64
+    dry_run: true
+    repo: appleboy/drone-scp
+    tags: linux-amd64
+  when:
+    event:
+    - pull_request
+
+- name: publish
+  pull: always
+  image: plugins/docker:linux-amd64
+  settings:
+    auto_tag: true
+    auto_tag_suffix: linux-amd64
+    cache_from: appleboy/drone-scp
+    daemon_off: false
+    dockerfile: docker/Dockerfile.linux.amd64
+    password:
+      from_secret: docker_password
+    repo: appleboy/drone-scp
+    username:
+      from_secret: docker_username
+  when:
+    event:
+      exclude:
+      - pull_request
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/pull/**
+  - refs/tags/**
+
+depends_on:
+- testing
+
+---
+kind: pipeline
+name: linux-arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: build-push
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+      exclude:
+      - tag
+
+- name: build-tag
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+    - tag
+
+- name: executable
+  pull: always
+  image: golang:1.16
+  commands:
+  - ./release/linux/arm64/drone-scp --help
+
+- name: dryrun
+  pull: always
+  image: plugins/docker:linux-arm64
+  settings:
+    cache_from: appleboy/drone-scp
+    dockerfile: docker/Dockerfile.linux.arm64
+    dry_run: true
+    repo: appleboy/drone-scp
+    tags: linux-arm64
+  when:
+    event:
+    - pull_request
+
+- name: publish
+  pull: always
+  image: plugins/docker:linux-arm64
+  settings:
+    auto_tag: true
+    auto_tag_suffix: linux-arm64
+    cache_from: appleboy/drone-scp
+    daemon_off: false
+    dockerfile: docker/Dockerfile.linux.arm64
+    password:
+      from_secret: docker_password
+    repo: appleboy/drone-scp
+    username:
+      from_secret: docker_username
+  when:
+    event:
+      exclude:
+      - pull_request
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/pull/**
+  - refs/tags/**
+
+depends_on:
+- testing
+
+---
+kind: pipeline
+name: linux-arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+- name: build-push
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+      exclude:
+      - tag
+
+- name: build-tag
+  pull: always
+  image: golang:1.16
+  commands:
+  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-scp
+  environment:
+    CGO_ENABLED: 0
+  when:
+    event:
+    - tag
+
+- name: executable
+  pull: always
+  image: golang:1.16
+  commands:
+  - ./release/linux/arm/drone-scp --help
+
+- name: dryrun
+  pull: always
+  image: plugins/docker:linux-arm
+  settings:
+    cache_from: appleboy/drone-scp
+    dockerfile: docker/Dockerfile.linux.arm
+    dry_run: true
+    repo: appleboy/drone-scp
+    tags: linux-arm
+  when:
+    event:
+    - pull_request
+
+- name: publish
+  pull: always
+  image: plugins/docker:linux-arm
+  settings:
+    auto_tag: true
+    auto_tag_suffix: linux-arm
+    cache_from: appleboy/drone-scp
+    daemon_off: false
+    dockerfile: docker/Dockerfile.linux.arm
+    password:
+      from_secret: docker_password
+    repo: appleboy/drone-scp
+    username:
+      from_secret: docker_username
+  when:
+    event:
+      exclude:
+      - pull_request
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/pull/**
+  - refs/tags/**
+
+depends_on:
+- testing
+
+---
+kind: pipeline
+name: release-binary
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build-all-binary
+  pull: always
+  image: golang:1.16
+  commands:
+  - make release
+  when:
+    event:
+    - tag
+
+- name: deploy-all-binary
+  pull: always
+  image: plugins/github-release
+  settings:
+    api_key:
+      from_secret: github_release_api_key
     files:
-      - dist/release/*
-    when:
-      event: [ tag ]
-      branch: [ refs/tags/* ]
+    - dist/release/*
+  when:
+    event:
+    - tag
+
+trigger:
+  ref:
+  - refs/tags/**
+
+depends_on:
+- testing
+
+---
+kind: pipeline
+name: notifications
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: manifest
+  pull: always
+  image: plugins/manifest
+  settings:
+    ignore_missing: true
+    password:
+      from_secret: docker_password
+    spec: docker/manifest.tmpl
+    username:
+      from_secret: docker_username
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+
+depends_on:
+- linux-amd64
+- linux-arm64
+- linux-arm
+- release-binary
+
+...

.drone.yml.sig

@@ -1 +0,0 @@
-eyJhbGciOiJIUzI1NiJ9.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.6L88HFwiIylbfrHpA2Y9UkHGM29aEed__G9k3JFlk9o

.gitignore

@@ -27,3 +27,4 @@ coverage.txt
 .env
 dist
 .cover
+release

.revive.toml

@@ -0,0 +1,25 @@
+ignoreGeneratedHeader = false
+severity = "warning"
+confidence = 0.8
+errorCode = 1
+warningCode = 1
+
+[rule.blank-imports]
+[rule.context-as-argument]
+[rule.context-keys-type]
+[rule.dot-imports]
+[rule.error-return]
+[rule.error-strings]
+[rule.error-naming]
+[rule.exported]
+[rule.if-return]
+[rule.increment-decrement]
+[rule.var-naming]
+[rule.var-declaration]
+[rule.package-comments]
+[rule.range]
+[rule.receiver-naming]
+[rule.time-naming]
+[rule.unexported-return]
+[rule.indent-error-flow]
+[rule.errorf]

.travis.yml

@@ -1,20 +0,0 @@
-sudo: required
-language: go
-
-go:
-  - 1.6.x
-  - 1.7.x
-  - tip
-
-before_install:
-  - sudo useradd -m -d /home/drone-scp -s /bin/bash drone-scp
-  - sudo mkdir -p /home/drone-scp/.ssh
-  - sudo chmod 700 /home/drone-scp/.ssh
-  - sudo cp tests/.ssh/id_rsa.pub /home/drone-scp/.ssh/authorized_keys
-  - sudo chown -R drone-scp /home/drone-scp/.ssh
-
-script:
-  - make vet
-  - make lint
-  - make test
-  - make build

DOCS.md

@@ -3,120 +3,191 @@ date: 2017-01-06T00:00:00+00:00
 title: SCP
 author: appleboy
 tags: [ publish, ssh, scp ]
-repo: appleboy/drone-scp
 logo: term.svg
+repo: appleboy/drone-scp
 image: appleboy/drone-scp
 ---
 
 The SCP plugin copy files and artifacts to target host machine via SSH. The below pipeline configuration demonstrates simple usage:
 
 ```yaml
-pipeline:
-  scp:
-    image: appleboy/drone-scp
+- name: scp files
+  image: appleboy/drone-scp
+  settings:
     host: example.com
-    target: /home/deploy/web
-    source: release.tar.gz
-```
-
-Example configuration with custom username, password and port:
-
-```diff
-pipeline:
-  scp:
-    image: appleboy/drone-scp
-    host: example.com
-+   username: appleboy
-+   password: 12345678
-+   port: 4430
-    target: /home/deploy/web
+    username: foo
+    password: bar
+    port: 22
+    target: /var/www/deploy/${DRONE_REPO_OWNER}/${DRONE_REPO_NAME}
     source: release.tar.gz
 ```
 
 Example configuration with multiple source and target folder:
 
 ```diff
-pipeline:
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
-    host: example.com
-    target: 
-+     - /home/deploy/web1
-+     - /home/deploy/web2
-    source: 
-+     - release_1.tar.gz
-+     - release_2.tar.gz
+    settings:
+      host: example.com
+      target:
++       - /home/deploy/web1
++       - /home/deploy/web2
+      source:
++       - release_1.tar.gz
++       - release_2.tar.gz
 ```
 
 Example configuration with multiple host:
 
 ```diff
-pipeline:
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
--   host: example.com
-+   host:
-+     - example1.com
-+     - example2.com
-    target: /home/deploy/web
-    source: release.tar.gz
+    settings:
+-     host: example.com
++     host:
++       - example1.com
++       - example2.com
+      target: /home/deploy/web
+      source: release.tar.gz
 ```
 
 Example configuration with wildcard pattern of source list:
 
 ```diff
-pipeline:
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
-    host:
-      - example1.com
-      - example2.com
-    target: /home/deploy/web
-    source:
--     - release/backend.tar.gz
--     - release/images.tar.gz
-+     - release/*.tar.gz
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      target: /home/deploy/web
+      source:
+-       - release/backend.tar.gz
+-       - release/images.tar.gz
++       - release/*.tar.gz
 ```
 
 Remove target folder before copy files and artifacts to target:
 
 ```diff
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
-    host: example.com
-    target: /home/deploy/web
-    source: release.tar.gz
-+   rm: true
+    settings:
+      target: /home/deploy/web
+      source: release.tar.gz
++     rm: true
 ```
 
-Example configuration for success build:
+Example for remove the specified number of leading path elements:
 
 ```diff
-pipeline:
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
-    host: example.com
-    target: /home/deploy/web
-    source: release.tar.gz
-+   when:
-+     status: success
+    settings:
+      host: example.com
+      target: /home/deploy/web
+      source: dist/release.tar.gz
++     strip_components: 1
 ```
 
-Example configuration for tag event:
+Example configuration using ｀SSHProxyCommand｀:
 
 ```diff
-pipeline:
-  scp:
+  - name: scp files
     image: appleboy/drone-scp
-    host: example.com
-    target: /home/deploy/web
-    source: release.tar.gz
-+   when:
-+     status: success
-+     event: tag
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      target: /home/deploy/web
+      source:
+        - release/*.tar.gz
++     proxy_host: 10.130.33.145
++     proxy_user: ubuntu
++     proxy_port: 22
++     proxy_password: 1234
 ```
 
-# Parameter Reference
+Example configuration using password from secrets:
+
+```diff
+  - name: scp files
+    image: appleboy/drone-scp
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      user: ubuntu
+      port: 22
+-     password: 1234
++     password:
++       from_secret: ssh_password
+      target: /home/deploy/web
+      source:
+        - release/*.tar.gz
+```
+
+Example configuration using command timeout:
+
+```diff
+  - name: scp files
+    image: appleboy/drone-scp
+    settings:
+      host:
+      - example1.com
+      - example2.com
+      user: ubuntu
+      password:
+      from_secret: ssh_password
+      port: 22
+-     command_timeout: 120
++     command_timeout: 2m
+      target: /home/deploy/web
+      source:
+      - release/*.tar.gz
+```
+
+Example configuration for ignore list:
+
+```diff
+  - name: scp files
+    image: appleboy/drone-scp
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      user: ubuntu
+      password:
+        from_secret: ssh_password
+      port: 22
+      command_timeout: 2m
+      target: /home/deploy/web
+      source:
++       - !release/README.md
+        - release/*
+```
+
+Example configuration for passphrase which protecting a private key:
+
+```diff
+  - name: scp files
+    image: appleboy/drone-scp
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      user: ubuntu
++     key:
++       from_secret: ssh_key
++     passphrase: 1234
+      port: 22
+      command_timeout: 2m
+      target: /home/deploy/web
+      source:
+        - release/*
+```
+
+## Parameter Reference
 
 host
 : target hostname or IP
@@ -133,6 +204,12 @@ password
 key
 : plain text of user private key
 
+passphrase
+: The purpose of the passphrase is usually to encrypt the private key.
+
+fingerprint
+: fingerprint SHA256 of the host public key, default is to skip verification
+
 target
 : folder path of target host
 
@@ -143,9 +220,48 @@ rm
 : remove target folder before copy files and artifacts
 
 timeout
-: timeout is the maximum amount of time for the TCP connection to establish.
+: Timeout is the maximum amount of time for the ssh connection to establish, default is 30 seconds.
 
-# Template Reference
+command_timeout
+: Command timeout is the maximum amount of time for the execute commands, default is 10 minutes.
+
+strip_components
+: remove the specified number of leading path elements
+
+tar_tmp_path
+: temporary path for tar file on the dest host
+
+tar_exec
+: alternative `tar` executable to on the dest host
+
+overwrite
+: use `--overwrite` flag with tar
+
+proxy_host
+: proxy hostname or IP
+
+proxy_port
+: ssh port of proxy host
+
+proxy_username
+: account for proxy host user
+
+proxy_password
+: password for proxy host user
+
+proxy_key
+: plain text of proxy private key
+
+proxy_key_path
+: key path of proxy private key
+
+proxy_passphrase
+: The purpose of the passphrase is usually to encrypt the private key.
+
+proxy_fingerprint
+: fingerprint SHA256 of the host public key, default is to skip verification
+
+## Template Reference
 
 repo.owner
 : repository owner

Dockerfile

@@ -1,9 +0,0 @@
-FROM alpine:3.4
-
-RUN apk update && \
-  apk add ca-certificates && \
-  rm -rf /var/cache/apk/*
-
-ADD drone-scp /
-
-ENTRYPOINT ["/drone-scp"]

Dockerfile.armhf

@@ -1,8 +0,0 @@
-FROM armhfbuild/alpine:3.4
-
-RUN apk update && \
-  apk add ca-certificates && \
-  rm -rf /var/cache/apk/*
-
-ADD drone-scp /bin/
-ENTRYPOINT ["/bin/drone-scp"]

Makefile

@@ -1,14 +1,14 @@
-.PHONY: test drone-scp build fmt vet errcheck lint install update release-dirs release-build release-copy release-check release coverage
-
 DIST := dist
 EXECUTABLE := drone-scp
+GOFMT ?= gofmt "-s"
+GO ?= go
 
 # for dockerhub
 DEPLOY_ACCOUNT := appleboy
 DEPLOY_IMAGE := $(EXECUTABLE)
 
 TARGETS ?= linux darwin windows
-PACKAGES ?= $(shell go list ./... | grep -v /vendor/)
+ARCHS ?= amd64
 SOURCES ?= $(shell find . -name "*.go" -type f)
 TAGS ?=
 LDFLAGS ?= -X 'main.Version=$(VERSION)'
@@ -28,42 +28,50 @@ endif
 all: build
 
 fmt:
-	find . -name "*.go" -type f -not -path "./vendor/*" | xargs gofmt -s -w
+	$(GOFMT) -w $(SOURCES)
 
 vet:
-	go vet $(PACKAGES)
-
-errcheck:
-	@which errcheck > /dev/null; if [ $$? -ne 0 ]; then \
-		go get -u github.com/kisielk/errcheck; \
-	fi
-	errcheck $(PACKAGES)
+	$(GO) vet ./...
 
 lint:
-	@which golint > /dev/null; if [ $$? -ne 0 ]; then \
-		go get -u github.com/golang/lint/golint; \
+	@hash revive > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
+		$(GO) get -u github.com/mgechev/revive; \
 	fi
-	for PKG in $(PACKAGES); do golint -set_exit_status $$PKG || exit 1; done;
+	revive -config .revive.toml ./... || exit 1
 
-unconvert:
-	@which unconvert > /dev/null; if [ $$? -ne 0 ]; then \
-		go get -u github.com/mdempsky/unconvert; \
+.PHONY: misspell-check
+misspell-check:
+	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
+		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
 	fi
-	for PKG in $(PACKAGES); do unconvert -v $$PKG || exit 1; done;
+	misspell -error $(SOURCES)
 
-test:
-	for PKG in $(PACKAGES); do go test -v -cover -coverprofile $$GOPATH/src/$$PKG/coverage.txt $$PKG || exit 1; done;
+.PHONY: misspell
+misspell:
+	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
+		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
+	fi
+	misspell -w $(SOURCES)
 
-html:
-	go tool cover -html=coverage.txt
+.PHONY: fmt-check
+fmt-check:
+	@diff=$$($(GOFMT) -d $(SOURCES)); \
+	if [ -n "$$diff" ]; then \
+		echo "Please run 'make fmt' and commit the result:"; \
+		echo "$${diff}"; \
+		exit 1; \
+	fi;
+
+test: fmt-check
+	@$(GO) test -v -cover -coverprofile coverage.txt ./... && echo "\n==>\033[32m Ok\033[m\n" || exit 1
 
 install: $(SOURCES)
-	go install -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)'
+	$(GO) install -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)'
 
 build: $(EXECUTABLE)
 
 $(EXECUTABLE): $(SOURCES)
-	go build -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o $@
+	$(GO) build -v -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o $@
 
 release: release-dirs release-build release-copy release-check
 
@@ -72,9 +80,9 @@ release-dirs:
 
 release-build:
 	@which gox > /dev/null; if [ $$? -ne 0 ]; then \
-		go get -u github.com/mitchellh/gox; \
+		$(GO) get -u github.com/mitchellh/gox; \
 	fi
-	gox -os="$(TARGETS)" -arch="amd64 386" -tags="$(TAGS)" -ldflags="-s -w $(LDFLAGS)" -output="$(DIST)/binaries/$(EXECUTABLE)-$(VERSION)-{{.OS}}-{{.Arch}}"
+	gox -os="$(TARGETS)" -arch="$(ARCHS)" -tags="$(TAGS)" -ldflags="-s -w $(LDFLAGS)" -output="$(DIST)/binaries/$(EXECUTABLE)-$(VERSION)-{{.OS}}-{{.Arch}}"
 
 release-copy:
 	$(foreach file,$(wildcard $(DIST)/binaries/$(EXECUTABLE)-*),cp $(file) $(DIST)/release/$(notdir $(file));)
@@ -82,14 +90,22 @@ release-copy:
 release-check:
 	cd $(DIST)/release; $(foreach file,$(wildcard $(DIST)/release/$(EXECUTABLE)-*),sha256sum $(notdir $(file)) > $(notdir $(file)).sha256;)
 
-# for docker.
-static_build:
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o $(DEPLOY_IMAGE)
+build_linux_amd64:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $(GO) build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/amd64/$(DEPLOY_IMAGE)
+
+build_linux_i386:
+	CGO_ENABLED=0 GOOS=linux GOARCH=386 $(GO) build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/i386/$(DEPLOY_IMAGE)
+
+build_linux_arm64:
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 $(GO) build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/arm64/$(DEPLOY_IMAGE)
+
+build_linux_arm:
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 $(GO) build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/arm/$(DEPLOY_IMAGE)
 
 docker_image:
 	docker build -t $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE) .
 
-docker: static_build docker_image
+docker: docker_image
 
 docker_deploy:
 ifeq ($(tag),)
@@ -100,27 +116,25 @@ endif
 	docker tag $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):latest $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):$(tag)
 	docker push $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE):$(tag)
 
-coverage:
-	sed -i '/main.go/d' .cover/coverage.txt
-	curl -s https://codecov.io/bash > .codecov && \
-	chmod +x .codecov && \
-	./.codecov -f .cover/coverage.txt
-
 ssh-server:
-	adduser -h /home/drone-scp -s /bin/bash -D -S drone-scp
-	passwd -d drone-scp
+	adduser -h /home/drone-scp -s /bin/sh -D -S drone-scp
+	echo drone-scp:1234 | chpasswd
 	mkdir -p /home/drone-scp/.ssh
 	chmod 700 /home/drone-scp/.ssh
-	cp tests/.ssh/id_rsa.pub /home/drone-scp/.ssh/authorized_keys
+	cat tests/.ssh/id_rsa.pub >> /home/drone-scp/.ssh/authorized_keys
+	cat tests/.ssh/test.pub >> /home/drone-scp/.ssh/authorized_keys
+	chmod 600 /home/drone-scp/.ssh/authorized_keys
 	chown -R drone-scp /home/drone-scp/.ssh
 	# install ssh and start server
-	apk update && apk add openssh openrc
+	apk add --update openssh openrc
 	rm -rf /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_dsa_key
+	sed -i 's/^#PubkeyAuthentication yes/PubkeyAuthentication yes/g' /etc/ssh/sshd_config
+	sed -i 's/AllowTcpForwarding no/AllowTcpForwarding yes/g' /etc/ssh/sshd_config
 	./tests/entrypoint.sh /usr/sbin/sshd -D &
 
-clean:
-	go clean -x -i ./...
-	rm -rf coverage.txt $(EXECUTABLE) $(DIST) vendor
+coverage:
+	sed -i '/main.go/d' coverage.txt
 
-version:
-	@echo $(VERSION)
+clean:
+	$(GO) clean -x -i ./...
+	rm -rf coverage.txt $(EXECUTABLE) $(DIST)

README.md

@@ -1,8 +1,13 @@
 # drone-scp
 
-[![GoDoc](https://godoc.org/github.com/appleboy/drone-scp?status.svg)](https://godoc.org/github.com/appleboy/drone-scp) [![Build Status](http://drone.wu-boy.com/api/badges/appleboy/drone-scp/status.svg)](http://drone.wu-boy.com/appleboy/drone-scp) [![codecov](https://codecov.io/gh/appleboy/drone-scp/branch/master/graph/badge.svg)](https://codecov.io/gh/appleboy/drone-scp) [![Go Report Card](https://goreportcard.com/badge/github.com/appleboy/drone-scp)](https://goreportcard.com/report/github.com/appleboy/drone-scp) [![Docker Pulls](https://img.shields.io/docker/pulls/appleboy/drone-scp.svg)](https://hub.docker.com/r/appleboy/drone-scp/) [![](https://images.microbadger.com/badges/image/appleboy/drone-scp.svg)](https://microbadger.com/images/appleboy/drone-scp "Get your own image badge on microbadger.com")
+[![GoDoc](https://godoc.org/github.com/appleboy/drone-scp?status.svg)](https://godoc.org/github.com/appleboy/drone-scp)
+[![Build Status](https://cloud.drone.io/api/badges/appleboy/drone-scp/status.svg)](https://cloud.drone.io/appleboy/drone-scp)
+[![codecov](https://codecov.io/gh/appleboy/drone-scp/branch/master/graph/badge.svg)](https://codecov.io/gh/appleboy/drone-scp)
+[![Go Report Card](https://goreportcard.com/badge/github.com/appleboy/drone-scp)](https://goreportcard.com/report/github.com/appleboy/drone-scp)
+[![Docker Pulls](https://img.shields.io/docker/pulls/appleboy/drone-scp.svg)](https://hub.docker.com/r/appleboy/drone-scp/)
+[![micro badger](https://images.microbadger.com/badges/image/appleboy/drone-scp.svg)](https://microbadger.com/images/appleboy/drone-scp "Get your own image badge on microbadger.com")
 
-Copy files and artifacts via SSH using a binary, docker or [Drone CI](http://readme.drone.io/).
+Copy files and artifacts via SSH using a binary, docker or [Drone CI](http://docs.drone.io/).
 
 ## Feature
 
@@ -11,41 +16,77 @@ Copy files and artifacts via SSH using a binary, docker or [Drone CI](http://rea
 * [x] Support send files to multiple host.
 * [x] Support send files to multiple target folder on host.
 * [x] Support load ssh key from absolute path or raw body.
+* [x] Support SSH ProxyCommand.
+
+```sh
++--------+       +----------+      +-----------+
+| Laptop | <-->  | Jumphost | <--> | FooServer |
++--------+       +----------+      +-----------+
+
+                   OR
+
++--------+       +----------+      +-----------+
+| Laptop | <-->  | Firewall | <--> | FooServer |
++--------+       +----------+      +-----------+
+192.168.1.5       121.1.2.3         10.10.29.68
+```
+
+## Breaking changes
+
+`v1.5.0`: change command timeout flag to `Duration`. See the following setting:
+
+```diff
+  - name: scp files
+    image: appleboy/drone-scp
+    settings:
+      host:
+        - example1.com
+        - example2.com
+      username: ubuntu
+      password:
+        from_secret: ssh_password
+      port: 22
+-     command_timeout: 120
++     command_timeout: 2m
+      target: /home/deploy/web
+      source:
+        - release/*.tar.gz
+```
 
 ## Build or Download a binary
 
 The pre-compiled binaries can be downloaded from [release page](https://github.com/appleboy/drone-scp/releases). Support the following OS type.
 
 * Windows amd64/386
-* Linux amd64/386
+* Linux arm/amd64/386
 * Darwin amd64/386
 
 With `Go` installed
 
+```sh
+export GO111MODULE=on
+go get -u -v github.com/appleboy/drone-scp
 ```
-$ go get -u -v github.com/appleboy/drone-scp
-``` 
 
 or build the binary with the following command:
 
-```
-$ make build
+```sh
+export GOOS=linux
+export GOARCH=amd64
+export CGO_ENABLED=0
+export GO111MODULE=on
+
+go test -cover ./...
+
+go build -v -a -tags netgo -o release/linux/amd64/drone-scp .
 ```
 
 ## Docker
 
 Build the docker image with the following commands:
 
-```
-$ make docker
-```
-
-Please note incorrectly building the image for the correct x64 linux and with
-CGO disabled will result in an error when running the Docker image:
-
-```
-docker: Error response from daemon: Container command
-'/bin/drone-scp' not found or does not exist..
+```sh
+make docker
 ```
 
 ## Usage
@@ -56,7 +97,6 @@ There are three ways to send notification.
 * [usage from docker](#usage-from-docker)
 * [usage from drone ci](#usage-from-drone-ci)
 
-<a name="usage-from-binary"></a>
 ### Usage from binary
 
 #### Using public key
@@ -91,8 +131,8 @@ eval `ssh-agent -s`
 
 Import your local public key `~/.ssh/id_rsa`
 
-```bash
-$ ssh-add
+```sh
+ssh-add
 ```
 
 You don't need to add `--password` or `--key-path` arguments.
@@ -119,42 +159,39 @@ drone-scp --host example1.com \
 + --source your_local_folder_path_2
 ```
 
-<a name="usage-from-docker"></a>
 ### Usage from docker
 
-#### Using public key
+Using public key
 
 ```bash
 docker run --rm \
-  -e SCP_HOST example.com \
-  -e SCP_USERNAME xxxxxxx \
-  -e SCP_PORT 22 \
-  -e SCP_KEY_PATH "${HOME}/.ssh/id_rsa"
-  -e SCP_SOURCE SOURCE_FILE_LIST \
-  -e SCP_TARGET TARGET_FOLDER_PATH \
+  -e SCP_HOST=example.com \
+  -e SCP_USERNAME=xxxxxxx \
+  -e SCP_PORT=22 \
+  -e SCP_KEY_PATH="${HOME}/.ssh/id_rsa"
+  -e SCP_SOURCE=SOURCE_FILE_LIST \
+  -e SCP_TARGET=TARGET_FOLDER_PATH \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
 ```
 
-#### Using password
+Using password
 
 ```diff
 docker run --rm \
-  -e SCP_HOST example.com \
-  -e SCP_USERNAME xxxxxxx \
-  -e SCP_PORT 22 \
-+ -e SCP_PASSWORD "xxxxxxx"
-  -e SCP_SOURCE SOURCE_FILE_LIST \
-  -e SCP_TARGET TARGET_FOLDER_PATH \
+  -e SCP_HOST=example.com \
+  -e SCP_USERNAME=xxxxxxx \
+  -e SCP_PORT=22 \
++ -e SCP_PASSWORD="xxxxxxx"
+  -e SCP_SOURCE=SOURCE_FILE_LIST \
+  -e SCP_TARGET=TARGET_FOLDER_PATH \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
 ```
 
-#### Using ssh-agent
-
-Start your local ssh agent:
+Using ssh-agent, start your local ssh agent:
 
 ```bash
 eval `ssh-agent -s`
@@ -162,63 +199,53 @@ eval `ssh-agent -s`
 
 Import your local public key `~/.ssh/id_rsa`
 
-```bash
-$ ssh-add
+```sh
+ssh-add
 ```
 
-You don't need to add `SCP_PASSWORD` or `SCP_KEY_PATH ` arguments.
+You don't need to add `SCP_PASSWORD` or `SCP_KEY_PATH` arguments.
 
 ```bash
 docker run --rm \
-  -e SCP_HOST example.com \
-  -e SCP_USERNAME xxxxxxx \
-  -e SCP_PORT 22 \
-  -e SCP_SOURCE SOURCE_FILE_LIST \
-  -e SCP_TARGET TARGET_FOLDER_PATH \
+  -e SCP_HOST=example.com \
+  -e SCP_USERNAME=xxxxxxx \
+  -e SCP_PORT=22 \
+  -e SCP_SOURCE=SOURCE_FILE_LIST \
+  -e SCP_TARGET=TARGET_FOLDER_PATH \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
 ```
 
-#### Send multiple source or target folder and hosts
+Send multiple source or target folder and hosts
 
 ```bash
 docker run --rm \
-  -e SCP_HOST example1.com,example2.com \
-  -e SCP_USERNAME xxxxxxx \
-  -e SCP_PASSWORD xxxxxxx \
-  -e SCP_PORT 22 \
-  -e SCP_SOURCE SOURCE_FILE_LIST_1,SOURCE_FILE_LIST_2 \
-  -e SCP_TARGET TARGET_FOLDER_PATH_1,TARGET_FOLDER_PATH_2 \
+  -e SCP_HOST=example1.com,example2.com \
+  -e SCP_USERNAME=xxxxxxx \
+  -e SCP_PASSWORD=xxxxxxx \
+  -e SCP_PORT=22 \
+  -e SCP_SOURCE=SOURCE_FILE_LIST_1,SOURCE_FILE_LIST_2 \
+  -e SCP_TARGET=TARGET_FOLDER_PATH_1,TARGET_FOLDER_PATH_2 \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
 ```
 
-<a name="usage-from-drone-ci"></a>
 ### Usage from drone ci
 
 Execute from the working directory:
 
 ```bash
 docker run --rm \
-  -e PLUGIN_HOST example.com \
-  -e PLUGIN_USERNAME xxxxxxx \
-  -e PLUGIN_PASSWORD xxxxxxx \
-  -e PLUGIN_PORT xxxxxxx \
-  -e PLUGIN_KEY "$(cat ${HOME}/.ssh/id_rsa)"
-  -e PLUGIN_SOURCE SOURCE_FILE_LIST \
-  -e PLUGIN_TARGET TARGET_FOLDER_PATH \
-  -e PLUGIN_RM false \
-  -e PLUGIN_DEBUG false \
-  -e DRONE_REPO_OWNER appleboy \
-  -e DRONE_REPO_NAME go-hello \
-  -e DRONE_COMMIT_SHA e5e82b5eb3737205c25955dcc3dcacc839b7be52 \
-  -e DRONE_COMMIT_BRANCH master \
-  -e DRONE_COMMIT_AUTHOR appleboy \
-  -e DRONE_BUILD_NUMBER 1 \
-  -e DRONE_BUILD_STATUS success \
-  -e DRONE_BUILD_LINK http://github.com/appleboy/go-hello \
+  -e PLUGIN_HOST=example.com \
+  -e PLUGIN_USERNAME=xxxxxxx \
+  -e PLUGIN_PASSWORD=xxxxxxx \
+  -e PLUGIN_PORT=xxxxxxx \
+  -e PLUGIN_SOURCE=SOURCE_FILE_LIST \
+  -e PLUGIN_TARGET=TARGET_FOLDER_PATH \
+  -e PLUGIN_RM=false \
+  -e PLUGIN_DEBUG=true \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
@@ -230,6 +257,6 @@ You can get more [information](http://plugins.drone.io/appleboy/drone-scp/) abou
 
 Test the package with the following command:
 
-```
-$ make test
+```sh
+make test
 ```

docker/Dockerfile.linux.amd64

@@ -0,0 +1,12 @@
+FROM plugins/base:linux-amd64
+
+LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
+  org.label-schema.name="Drone SCP" \
+  org.label-schema.vendor="Bo-Yi Wu" \
+  org.label-schema.schema-version="1.0"
+
+RUN apk add --no-cache ca-certificates && \
+  rm -rf /var/cache/apk/*
+
+COPY release/linux/amd64/drone-scp /bin/
+ENTRYPOINT ["/bin/drone-scp"]

docker/Dockerfile.linux.arm

@@ -0,0 +1,12 @@
+FROM plugins/base:linux-arm
+
+LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
+  org.label-schema.name="Drone SCP" \
+  org.label-schema.vendor="Bo-Yi Wu" \
+  org.label-schema.schema-version="1.0"
+
+RUN apk add --no-cache ca-certificates && \
+  rm -rf /var/cache/apk/*
+
+COPY release/linux/arm/drone-scp /bin/
+ENTRYPOINT ["/bin/drone-scp"]

docker/Dockerfile.linux.arm64

@@ -0,0 +1,12 @@
+FROM plugins/base:linux-arm64
+
+LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
+  org.label-schema.name="Drone SCP" \
+  org.label-schema.vendor="Bo-Yi Wu" \
+  org.label-schema.schema-version="1.0"
+
+RUN apk add --no-cache ca-certificates && \
+  rm -rf /var/cache/apk/*
+
+COPY release/linux/arm64/drone-scp /bin/
+ENTRYPOINT ["/bin/drone-scp"]

docker/Dockerfile.windows.amd64

@@ -0,0 +1,10 @@
+FROM microsoft/nanoserver:10.0.14393.1884
+
+LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
+  org.label-schema.name="Drone SCP" \
+  org.label-schema.vendor="Bo-Yi Wu" \
+  org.label-schema.schema-version="1.0"
+
+COPY drone-scp.exe /drone-scp.exe
+
+ENTRYPOINT [ "\\drone-scp.exe" ]

docker/manifest.tmpl

@@ -0,0 +1,25 @@
+image: appleboy/drone-scp:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  -
+    image: appleboy/drone-scp:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+    platform:
+      architecture: amd64
+      os: linux
+  -
+    image: appleboy/drone-scp:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
+    platform:
+      architecture: arm64
+      os: linux
+      variant: v8
+  -
+    image: appleboy/drone-scp:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm
+    platform:
+      architecture: arm
+      os: linux
+      variant: v7

easyssh/easyssh.go

@@ -1,200 +0,0 @@
-// Package easyssh provides a simple implementation of some SSH protocol
-// features in Go. You can simply run a command on a remote server or get a file
-// even simpler than native console SSH client. You don't need to think about
-// Dials, sessions, defers, or public keys... Let easyssh think about it!
-package easyssh
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net"
-	"os"
-	"path/filepath"
-	"time"
-
-	"golang.org/x/crypto/ssh"
-	"golang.org/x/crypto/ssh/agent"
-)
-
-// MakeConfig Contains main authority information.
-// User field should be a name of user on remote server (ex. john in ssh john@example.com).
-// Server field should be a remote machine address (ex. example.com in ssh john@example.com)
-// Key is a path to private key on your local machine.
-// Port is SSH server port on remote machine.
-// Note: easyssh looking for private key in user's home directory (ex. /home/john + Key).
-// Then ensure your Key begins from '/' (ex. /.ssh/id_rsa)
-type MakeConfig struct {
-	User     string
-	Server   string
-	Key      string
-	KeyPath  string
-	Port     string
-	Password string
-	Timeout  time.Duration
-}
-
-// returns ssh.Signer from user you running app home path + cutted key path.
-// (ex. pubkey,err := getKeyFile("/.ssh/id_rsa") )
-func getKeyFile(keypath string) (ssh.Signer, error) {
-	buf, err := ioutil.ReadFile(keypath)
-	if err != nil {
-		return nil, err
-	}
-
-	pubkey, err := ssh.ParsePrivateKey(buf)
-	if err != nil {
-		return nil, err
-	}
-
-	return pubkey, nil
-}
-
-// connects to remote server using MakeConfig struct and returns *ssh.Session
-func (ssh_conf *MakeConfig) connect() (*ssh.Session, error) {
-	// auths holds the detected ssh auth methods
-	auths := []ssh.AuthMethod{}
-
-	// figure out what auths are requested, what is supported
-	if ssh_conf.Password != "" {
-		auths = append(auths, ssh.Password(ssh_conf.Password))
-	}
-
-	if sshAgent, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK")); err == nil {
-		auths = append(auths, ssh.PublicKeysCallback(agent.NewClient(sshAgent).Signers))
-		defer sshAgent.Close()
-	}
-
-	if ssh_conf.KeyPath != "" {
-		if pubkey, err := getKeyFile(ssh_conf.KeyPath); err == nil {
-			auths = append(auths, ssh.PublicKeys(pubkey))
-		}
-	}
-
-	if ssh_conf.Key != "" {
-		signer, _ := ssh.ParsePrivateKey([]byte(ssh_conf.Key))
-		auths = append(auths, ssh.PublicKeys(signer))
-	}
-
-	config := &ssh.ClientConfig{
-		Timeout: ssh_conf.Timeout,
-		User:    ssh_conf.User,
-		Auth:    auths,
-	}
-
-	client, err := ssh.Dial("tcp", net.JoinHostPort(ssh_conf.Server, ssh_conf.Port), config)
-	if err != nil {
-		return nil, err
-	}
-
-	session, err := client.NewSession()
-	if err != nil {
-		return nil, err
-	}
-
-	return session, nil
-}
-
-// Stream returns one channel that combines the stdout and stderr of the command
-// as it is run on the remote machine, and another that sends true when the
-// command is done. The sessions and channels will then be closed.
-func (ssh_conf *MakeConfig) Stream(command string) (output chan string, done chan bool, err error) {
-	// connect to remote host
-	session, err := ssh_conf.connect()
-	if err != nil {
-		return output, done, err
-	}
-	// connect to both outputs (they are of type io.Reader)
-	outReader, err := session.StdoutPipe()
-	if err != nil {
-		return output, done, err
-	}
-	errReader, err := session.StderrPipe()
-	if err != nil {
-		return output, done, err
-	}
-	// combine outputs, create a line-by-line scanner
-	outputReader := io.MultiReader(outReader, errReader)
-	err = session.Start(command)
-	scanner := bufio.NewScanner(outputReader)
-	// continuously send the command's output over the channel
-	outputChan := make(chan string)
-	done = make(chan bool)
-	go func(scanner *bufio.Scanner, out chan string, done chan bool) {
-		defer close(outputChan)
-		defer close(done)
-		for scanner.Scan() {
-			outputChan <- scanner.Text()
-		}
-		// close all of our open resources
-		done <- true
-		session.Close()
-	}(scanner, outputChan, done)
-	return outputChan, done, err
-}
-
-// Run command on remote machine and returns its stdout as a string
-func (ssh_conf *MakeConfig) Run(command string) (outStr string, err error) {
-	outChan, doneChan, err := ssh_conf.Stream(command)
-	if err != nil {
-		return outStr, err
-	}
-	// read from the output channel until the done signal is passed
-	stillGoing := true
-	for stillGoing {
-		select {
-		case <-doneChan:
-			stillGoing = false
-		case line := <-outChan:
-			outStr += line + "\n"
-		}
-	}
-	// return the concatenation of all signals from the output channel
-	return outStr, err
-}
-
-// Scp uploads sourceFile to remote machine like native scp console app.
-func (ssh_conf *MakeConfig) Scp(sourceFile string) error {
-	session, err := ssh_conf.connect()
-
-	if err != nil {
-		return err
-	}
-	defer session.Close()
-
-	targetFile := filepath.Base(sourceFile)
-
-	src, srcErr := os.Open(sourceFile)
-
-	if srcErr != nil {
-		return srcErr
-	}
-
-	srcStat, statErr := src.Stat()
-
-	if statErr != nil {
-		return statErr
-	}
-
-	go func() {
-		w, _ := session.StdinPipe()
-
-		fmt.Fprintln(w, "C0644", srcStat.Size(), targetFile)
-
-		if srcStat.Size() > 0 {
-			io.Copy(w, src)
-			fmt.Fprint(w, "\x00")
-			w.Close()
-		} else {
-			fmt.Fprint(w, "\x00")
-			w.Close()
-		}
-	}()
-
-	if err := session.Run(fmt.Sprintf("scp -t %s", targetFile)); err != nil {
-		return err
-	}
-
-	return nil
-}

easyssh/easyssh_test.go

@@ -1,59 +0,0 @@
-package easyssh
-
-import (
-	"os"
-	"os/user"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestGetKeyFile(t *testing.T) {
-	// missing file
-	_, err := getKeyFile("abc")
-	assert.Error(t, err)
-	assert.Equal(t, "open abc: no such file or directory", err.Error())
-
-	// wrong format
-	_, err = getKeyFile("../tests/.ssh/id_rsa.pub")
-	assert.Error(t, err)
-	assert.Equal(t, "ssh: no key found", err.Error())
-
-	_, err = getKeyFile("../tests/.ssh/id_rsa")
-	assert.NoError(t, err)
-}
-
-func TestRunCommand(t *testing.T) {
-	ssh := &MakeConfig{
-		Server:  "localhost",
-		User:    "drone-scp",
-		Port:    "22",
-		KeyPath: "../tests/.ssh/id_rsa",
-	}
-
-	output, err := ssh.Run("whoami")
-	assert.Equal(t, "drone-scp\n", output)
-	assert.NoError(t, err)
-}
-
-func TestSCPCommand(t *testing.T) {
-	ssh := &MakeConfig{
-		Server:  "localhost",
-		User:    "drone-scp",
-		Port:    "22",
-		KeyPath: "../tests/.ssh/id_rsa",
-	}
-
-	err := ssh.Scp("../tests/a.txt")
-	assert.NoError(t, err)
-
-	u, err := user.Lookup("drone-scp")
-	if err != nil {
-		t.Fatalf("Lookup: %v", err)
-	}
-
-	// check file exist
-	if _, err := os.Stat(u.HomeDir + "/a.txt"); os.IsNotExist(err) {
-		t.Fatalf("SCP-error: %v", err)
-	}
-}

glide.lock

@@ -1,34 +0,0 @@
-hash: 324c76f4ece1989f584ec84aab8252020da4dcbc20e38990465a9a0b7400f8ec
-updated: 2016-12-28T15:52:54.896825557+08:00
-imports:
-- name: github.com/appleboy/com
-  version: c2e1fea1b771a26cb55774843ebd8955d723ee4e
-  subpackages:
-  - random
-- name: github.com/joho/godotenv
-  version: a01a834e1654b4c9ca5b3ad05159445cc9c7ad08
-  subpackages:
-  - autoload
-- name: github.com/urfave/cli
-  version: 0bdeddeeb0f650497d603c4ad7b20cfe685682f6
-- name: golang.org/x/crypto
-  version: c2f4947f41766b144bb09066e919466da5eddeae
-  subpackages:
-  - curve25519
-  - ed25519
-  - ed25519/internal/edwards25519
-  - ssh
-  - ssh/agent
-testImports:
-- name: github.com/davecgh/go-spew
-  version: 6d212800a42e8ab5c146b8ace3490ee17e5225f9
-  subpackages:
-  - spew
-- name: github.com/pmezard/go-difflib
-  version: d8ed2627bdf02c080bf22230dbb337003b7aba2d
-  subpackages:
-  - difflib
-- name: github.com/stretchr/testify
-  version: 69483b4bd14f5845b5a1e55bca19e954e827f1d0
-  subpackages:
-  - assert

glide.yaml

@@ -1,20 +0,0 @@
-package: github.com/appleboy/drone-scp
-import:
-- package: github.com/joho/godotenv
-  version: ^1.0.0
-  subpackages:
-  - autoload
-- package: github.com/urfave/cli
-  version: ^1.19.1
-- package: golang.org/x/crypto
-  subpackages:
-  - ssh
-  - ssh/agent
-- package: github.com/appleboy/com
-  subpackages:
-  - random
-testImport:
-- package: github.com/stretchr/testify
-  version: ^1.1.4
-  subpackages:
-  - assert

go.mod

@@ -0,0 +1,13 @@
+module github.com/appleboy/drone-scp
+
+go 1.14
+
+require (
+	github.com/appleboy/com v0.1.5
+	github.com/appleboy/easyssh-proxy v1.3.9
+	github.com/fatih/color v1.9.0
+	github.com/joho/godotenv v1.4.0
+	github.com/stretchr/testify v1.7.0
+	github.com/urfave/cli/v2 v2.3.0
+	golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9
+)

go.sum

@@ -0,0 +1,55 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/ScaleFT/sshkeys v0.0.0-20200327173127-6142f742bca5 h1:VauE2GcJNZFun2Och6tIT2zJZK1v6jxALQDA9BIji/E=
+github.com/ScaleFT/sshkeys v0.0.0-20200327173127-6142f742bca5/go.mod h1:gxOHeajFfvGQh/fxlC8oOKBe23xnnJTif00IFFbiT+o=
+github.com/appleboy/com v0.1.5 h1:MNWkTSBtEN+YaQO4IGCTQ8xfMvf3h57LLnUNTmCfDDM=
+github.com/appleboy/com v0.1.5/go.mod h1:jnufjIC3opMlReyPPPye+8JqNvUzLm25o7h6SOy8nv0=
+github.com/appleboy/easyssh-proxy v1.3.9 h1:b+sVSTz+cVFvfA23HQywMMpm0s5g3gH7jYdBcQqaCQI=
+github.com/appleboy/easyssh-proxy v1.3.9/go.mod h1:G1eQomBEME7NWKA3hE49s5HsT44S5fn0aBxX7k9Yjug=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dchest/bcrypt_pbkdf v0.0.0-20150205184540-83f37f9c154a h1:saTgr5tMLFnmy/yg3qDTft4rE5DY2uJ/cCxCe3q0XTU=
+github.com/dchest/bcrypt_pbkdf v0.0.0-20150205184540-83f37f9c154a/go.mod h1:Bw9BbhOJVNR+t0jCqx2GC6zv0TGBsShs56Y3gfSCvl0=
+github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
+github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
+github.com/joho/godotenv v1.4.0 h1:3l4+N6zfMWnkbPEXKng2o2/MR5mSwTrBih4ZEkkz1lg=
+github.com/joho/godotenv v1.4.0/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaaviA=
+github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM=
+github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
+github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
+github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9 h1:sYNJzB4J8toYPQTM6pAkcmBRgw9SnQKP9oXCHfgy604=
+golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200219091948-cb0a6d8edb6c h1:jceGD5YNJGgGMkJz79agzOln1K9TaZUjv5ird16qniQ=
+golang.org/x/sys v0.0.0-20200219091948-cb0a6d8edb6c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221 h1:/ZHdbVpdR/jk3g30/d4yUL0JU9kksj8+F/bnQUVLGDM=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

logo.svg

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg width="256px" height="210px" viewBox="0 0 256 210" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" preserveAspectRatio="xMidYMid">
-	<g>
-		<rect fill="#000000" x="0" y="0" width="256" height="209.342334" rx="5"></rect>
-		<path d="M28.2414658,21.7735776 C27.3856638,20.9177756 26.3529412,20.4898746 25.143298,20.4898746 C23.9336548,20.4898746 22.8968177,20.9218901 22.0327869,21.7859209 C21.1810993,22.6376085 20.7490839,23.6744455 20.7490839,24.8840887 C20.7490839,26.0937319 21.1810993,27.1305689 22.0327869,27.9822565 L35.4746384,41.424108 L22.0451302,54.8536162 C21.1810993,55.7176471 20.7490839,56.7544841 20.7367406,57.9641273 C20.7490839,59.1737705 21.1810993,60.2106075 22.0327869,61.0622951 C22.8968177,61.9139826 23.9336548,62.3459981 25.1309547,62.3583414 C26.3529412,62.3583414 27.3897782,61.9263259 28.2538091,61.0622951 L43.1891996,46.1145612 C46.3243973,42.9917068 46.3243973,39.8565092 43.1891996,36.7213115 L28.2414658,21.7735776 L28.2414658,21.7735776 Z M86.7857281,54.8783028 C85.9216972,54.0142719 84.8725169,53.5822565 83.6505304,53.5822565 L83.6505304,53.5760849 L54.8165863,53.5760849 L54.8165863,53.5822565 C53.5945998,53.5822565 52.5577628,54.0142719 51.6937319,54.8783028 C50.8297011,55.7423337 50.3976856,56.7791707 50.3976856,58.0011572 C50.3976856,59.2231437 50.8297011,60.272324 51.6937319,61.1363549 C52.5577628,62.0003857 53.5945998,62.4324012 54.8165863,62.4324012 L54.8165863,62.4262295 L83.6505304,62.4262295 L83.6505304,62.4324012 C84.8725169,62.4324012 85.9216972,62.0003857 86.7857281,61.1363549 C87.6497589,60.272324 88.0817743,59.2231437 88.0817743,58.0011572 C88.0817743,56.7791707 87.6497589,55.7423337 86.7857281,54.8783028 L86.7857281,54.8783028 L86.7857281,54.8783028 Z" fill="#FFFFFF"></path>
-	</g>
-</svg>

main.go

@@ -1,23 +1,32 @@
 package main
 
 import (
+	"log"
 	"os"
+	"time"
 
+	"github.com/appleboy/easyssh-proxy"
 	"github.com/joho/godotenv"
-	_ "github.com/joho/godotenv/autoload"
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // Version set at compile-time
-var Version = "v1.0.0-dev"
+var (
+	Version string
+)
 
 func main() {
+	// Load env-file if it exists first
+	if filename, found := os.LookupEnv("PLUGIN_ENV_FILE"); found {
+		_ = godotenv.Load(filename)
+	}
 
 	app := cli.NewApp()
 	app.Name = "Drone SCP"
 	app.Usage = "Copy files and artifacts via SSH."
-	app.Copyright = "Copyright (c) 2017 Bo-Yi Wu"
-	app.Authors = []cli.Author{
+	app.Copyright = "Copyright (c) 2020 Bo-Yi Wu"
+	app.Version = Version
+	app.Authors = []*cli.Author{
 		{
 			Name:  "Bo-Yi Wu",
 			Email: "appleboy.tw@gmail.com",
@@ -26,113 +35,220 @@ func main() {
 	app.Action = run
 	app.Version = Version
 	app.Flags = []cli.Flag{
-		cli.StringSliceFlag{
-			Name:   "host, H",
-			Usage:  "Server host",
-			EnvVar: "PLUGIN_HOST,SCP_HOST",
+		&cli.StringSliceFlag{
+			Name:     "host, H",
+			Usage:    "Server host",
+			EnvVars:  []string{"PLUGIN_HOST", "SCP_HOST", "SSH_HOST", "HOST", "INPUT_HOST"},
+			FilePath: ".host",
 		},
-		cli.StringFlag{
-			Name:   "port, P",
-			Value:  "22",
-			Usage:  "Server port, default to 22",
-			EnvVar: "PLUGIN_PORT,SCP_PORT",
+		&cli.StringFlag{
+			Name:    "port, P",
+			Value:   "22",
+			Usage:   "Server port, default to 22",
+			EnvVars: []string{"PLUGIN_PORT", "SCP_PORT", "SSH_PORT", "PORT", "INPUT_PORT"},
 		},
-		cli.StringFlag{
-			Name:   "username, u",
-			Usage:  "Server username",
-			EnvVar: "PLUGIN_USERNAME,SCP_USERNAME",
+		&cli.StringFlag{
+			Name:    "username, u",
+			Usage:   "Server username",
+			EnvVars: []string{"PLUGIN_USERNAME", "PLUGIN_USER", "SCP_USERNAME", "SSH_USERNAME", "USERNAME", "INPUT_USERNAME"},
 		},
-		cli.StringFlag{
-			Name:   "password, p",
-			Usage:  "Password for password-based authentication",
-			EnvVar: "PLUGIN_PASSWORD,SCP_PASSWORD",
+		&cli.StringFlag{
+			Name:    "password, p",
+			Usage:   "Password for password-based authentication",
+			EnvVars: []string{"PLUGIN_PASSWORD", "SCP_PASSWORD", "SSH_PASSWORD", "PASSWORD", "INPUT_PASSWORD"},
 		},
-		cli.DurationFlag{
-			Name:   "timeout",
-			Usage:  "connection timeout",
-			EnvVar: "PLUGIN_TIMEOUT,SCP_TIMEOUT",
+		&cli.StringSliceFlag{
+			Name:    "ciphers",
+			Usage:   "The allowed cipher algorithms. If unspecified then a sensible",
+			EnvVars: []string{"PLUGIN_CIPHERS", "SSH_CIPHERS", "CIPHERS", "INPUT_CIPHERS"},
 		},
-		cli.StringFlag{
-			Name:   "key, k",
-			Usage:  "ssh private key",
-			EnvVar: "PLUGIN_KEY,SCP_KEY",
+		&cli.BoolFlag{
+			Name:    "useInsecureCipher",
+			Usage:   "include more ciphers with use_insecure_cipher",
+			EnvVars: []string{"PLUGIN_USE_INSECURE_CIPHER", "SSH_USE_INSECURE_CIPHER", "USE_INSECURE_CIPHER", "INPUT_USE_INSECURE_CIPHER"},
 		},
-		cli.StringFlag{
-			Name:   "key-path, i",
-			Usage:  "ssh private key path",
-			EnvVar: "PLUGIN_KEY_PATH,SCP_KEY_PATH",
+		&cli.StringFlag{
+			Name:    "fingerprint",
+			Usage:   "fingerprint SHA256 of the host public key, default is to skip verification",
+			EnvVars: []string{"PLUGIN_FINGERPRINT", "SSH_FINGERPRINT", "FINGERPRINT", "INPUT_FINGERPRINT"},
 		},
-		cli.StringSliceFlag{
-			Name:   "target, t",
-			Usage:  "Target path on the server",
-			EnvVar: "PLUGIN_TARGET,SCP_TARGET",
+		&cli.DurationFlag{
+			Name:    "timeout",
+			Usage:   "connection timeout",
+			EnvVars: []string{"PLUGIN_TIMEOUT", "SCP_TIMEOUT", "INPUT_TIMEOUT"},
+			Value:   30 * time.Second,
 		},
-		cli.StringSliceFlag{
-			Name:   "source, s",
-			Usage:  "scp file list",
-			EnvVar: "PLUGIN_SOURCE,SCP_SOURCE",
+		&cli.DurationFlag{
+			Name:    "command.timeout",
+			Usage:   "command timeout",
+			EnvVars: []string{"PLUGIN_COMMAND_TIMEOUT", "SSH_COMMAND_TIMEOUT", "INPUT_COMMAND_TIMEOUT"},
+			Value:   10 * time.Minute,
 		},
-		cli.BoolFlag{
-			Name:   "rm, r",
-			Usage:  "remove target folder before upload data",
-			EnvVar: "PLUGIN_RM,SCP_RM",
+		&cli.StringFlag{
+			Name:    "ssh-key, k",
+			Usage:   "ssh private key",
+			EnvVars: []string{"PLUGIN_SSH_KEY,", "PLUGIN_KEY", "SCP_KEY", "SSH_KEY", "KEY", "INPUT_KEY"},
 		},
-		cli.StringFlag{
-			Name:   "repo.owner",
-			Usage:  "repository owner",
-			EnvVar: "DRONE_REPO_OWNER",
+		&cli.StringFlag{
+			Name:    "ssh-passphrase",
+			Usage:   "The purpose of the passphrase is usually to encrypt the private key.",
+			EnvVars: []string{"PLUGIN_SSH_PASSPHRASE", "PLUGIN_PASSPHRASE", "SSH_PASSPHRASE", "PASSPHRASE", "INPUT_PASSPHRASE"},
 		},
-		cli.StringFlag{
-			Name:   "repo.name",
-			Usage:  "repository name",
-			EnvVar: "DRONE_REPO_NAME",
+		&cli.StringFlag{
+			Name:    "key-path, i",
+			Usage:   "ssh private key path",
+			EnvVars: []string{"PLUGIN_KEY_PATH", "SCP_KEY_PATH", "SSH_KEY_PATH", "INPUT_KEY_PATH"},
 		},
-		cli.StringFlag{
-			Name:   "commit.sha",
-			Usage:  "git commit sha",
-			EnvVar: "DRONE_COMMIT_SHA",
+		&cli.StringSliceFlag{
+			Name:    "target, t",
+			Usage:   "Target path on the server",
+			EnvVars: []string{"PLUGIN_TARGET", "SCP_TARGET", "TARGET", "INPUT_TARGET"},
 		},
-		cli.StringFlag{
-			Name:   "commit.branch",
-			Value:  "master",
-			Usage:  "git commit branch",
-			EnvVar: "DRONE_COMMIT_BRANCH",
+		&cli.StringSliceFlag{
+			Name:    "source, s",
+			Usage:   "scp file list",
+			EnvVars: []string{"PLUGIN_SOURCE", "SCP_SOURCE", "SOURCE", "INPUT_SOURCE"},
 		},
-		cli.StringFlag{
-			Name:   "commit.author",
-			Usage:  "git author name",
-			EnvVar: "DRONE_COMMIT_AUTHOR",
+		&cli.BoolFlag{
+			Name:    "rm, r",
+			Usage:   "remove target folder before upload data",
+			EnvVars: []string{"PLUGIN_RM", "SCP_RM", "RM", "INPUT_RM"},
 		},
-		cli.StringFlag{
-			Name:   "commit.message",
-			Usage:  "commit message",
-			EnvVar: "DRONE_COMMIT_MESSAGE",
+		&cli.StringFlag{
+			Name:    "repo.owner",
+			Usage:   "repository owner",
+			EnvVars: []string{"DRONE_REPO_OWNER"},
 		},
-		cli.StringFlag{
-			Name:   "build.event",
-			Value:  "push",
-			Usage:  "build event",
-			EnvVar: "DRONE_BUILD_EVENT",
+		&cli.StringFlag{
+			Name:    "repo.name",
+			Usage:   "repository name",
+			EnvVars: []string{"DRONE_REPO_NAME"},
 		},
-		cli.IntFlag{
-			Name:   "build.number",
-			Usage:  "build number",
-			EnvVar: "DRONE_BUILD_NUMBER",
+		&cli.StringFlag{
+			Name:    "commit.sha",
+			Usage:   "git commit sha",
+			EnvVars: []string{"DRONE_COMMIT_SHA"},
 		},
-		cli.StringFlag{
-			Name:   "build.status",
-			Usage:  "build status",
-			Value:  "success",
-			EnvVar: "DRONE_BUILD_STATUS",
+		&cli.StringFlag{
+			Name:    "commit.branch",
+			Value:   "master",
+			Usage:   "git commit branch",
+			EnvVars: []string{"DRONE_COMMIT_BRANCH"},
 		},
-		cli.StringFlag{
-			Name:   "build.link",
-			Usage:  "build link",
-			EnvVar: "DRONE_BUILD_LINK",
+		&cli.StringFlag{
+			Name:    "commit.author",
+			Usage:   "git author name",
+			EnvVars: []string{"DRONE_COMMIT_AUTHOR"},
 		},
-		cli.StringFlag{
-			Name:  "env-file",
-			Usage: "source env file",
+		&cli.StringFlag{
+			Name:    "commit.message",
+			Usage:   "commit message",
+			EnvVars: []string{"DRONE_COMMIT_MESSAGE"},
+		},
+		&cli.StringFlag{
+			Name:    "build.event",
+			Value:   "push",
+			Usage:   "build event",
+			EnvVars: []string{"DRONE_BUILD_EVENT"},
+		},
+		&cli.IntFlag{
+			Name:    "build.number",
+			Usage:   "build number",
+			EnvVars: []string{"DRONE_BUILD_NUMBER"},
+		},
+		&cli.StringFlag{
+			Name:    "build.status",
+			Usage:   "build status",
+			Value:   "success",
+			EnvVars: []string{"DRONE_BUILD_STATUS"},
+		},
+		&cli.StringFlag{
+			Name:    "build.link",
+			Usage:   "build link",
+			EnvVars: []string{"DRONE_BUILD_LINK"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.ssh-key",
+			Usage:   "private ssh key of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_SSH_KEY", "PLUGIN_PROXY_KEY", "PROXY_SSH_KEY", "PROXY_KEY", "INPUT_PROXY_KEY"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.ssh-passphrase",
+			Usage:   "The purpose of the passphrase is usually to encrypt the private key.",
+			EnvVars: []string{"PLUGIN_PROXY_SSH_PASSPHRASE", "PLUGIN_PROXY_PASSPHRASE", "PROXY_SSH_PASSPHRASE", "PROXY_PASSPHRASE", "INPUT_PROXY_PASSPHRASE"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.key-path",
+			Usage:   "ssh private key path of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_KEY_PATH", "PROXY_SSH_KEY_PATH", "INPUT_PROXY_KEY_PATH"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.username",
+			Usage:   "connect as user of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_USERNAME", "PLUGIN_PROXY_USER", "PROXY_SSH_USERNAME", "PROXY_USERNAME", "INPUT_PROXY_USERNAME"},
+			Value:   "root",
+		},
+		&cli.StringFlag{
+			Name:    "proxy.password",
+			Usage:   "user password of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_PASSWORD", "PROXY_SSH_PASSWORD", "PROXY_PASSWORD", "INPUT_PROXY_PASSWORD"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.host",
+			Usage:   "connect to host of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_HOST", "PROXY_SSH_HOST", "PROXY_HOST", "INPUT_PROXY_HOST"},
+		},
+		&cli.StringSliceFlag{
+			Name:    "proxy.ciphers",
+			Usage:   "The allowed cipher algorithms. If unspecified then a sensible",
+			EnvVars: []string{"PLUGIN_PROXY_CIPHERS", "PROXY_SSH_CIPHERS", "PROXY_CIPHERS", "INPUT_PROXY_CIPHERS"},
+		},
+		&cli.BoolFlag{
+			Name:    "proxy.useInsecureCipher",
+			Usage:   "include more ciphers with use_insecure_cipher",
+			EnvVars: []string{"PLUGIN_PROXY_USE_INSECURE_CIPHER", "SSH_PROXY_USE_INSECURE_CIPHER", "PROXY_USE_INSECURE_CIPHER", "INPUT_PROXY_USE_INSECURE_CIPHER"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.fingerprint",
+			Usage:   "fingerprint SHA256 of the host public key, default is to skip verification",
+			EnvVars: []string{"PLUGIN_PROXY_FINGERPRINT", "SSH_PROXY_FINGERPRINT", "PROXY_FINGERPRINT", "INPUT_PROXY_FINGERPRINT"},
+		},
+		&cli.StringFlag{
+			Name:    "proxy.port",
+			Usage:   "connect to port of proxy",
+			EnvVars: []string{"PLUGIN_PROXY_PORT", "PROXY_SSH_PORT", "PROXY_PORT", "INPUT_PROXY_PORT"},
+			Value:   "22",
+		},
+		&cli.DurationFlag{
+			Name:    "proxy.timeout",
+			Usage:   "proxy connection timeout",
+			EnvVars: []string{"PLUGIN_PROXY_TIMEOUT", "PROXY_SSH_TIMEOUT", "INPUT_PROXY_TIMEOUT"},
+		},
+		&cli.IntFlag{
+			Name:    "strip.components",
+			Usage:   "Remove the specified number of leading path elements.",
+			EnvVars: []string{"PLUGIN_STRIP_COMPONENTS", "TAR_STRIP_COMPONENTS", "INPUT_STRIP_COMPONENTS"},
+		},
+		&cli.StringFlag{
+			Name:    "tar.exec",
+			Usage:   "Alternative `tar` executable to on the dest host",
+			EnvVars: []string{"PLUGIN_TAR_EXEC", "SCP_TAR_EXEC", "INPUT_TAR_EXEC"},
+			Value:   "tar",
+		},
+		&cli.StringFlag{
+			Name:    "tar.tmp-path",
+			Usage:   "Temporary path for tar file on the dest host",
+			EnvVars: []string{"PLUGIN_TAR_TMP_PATH", "SCP_TAR_TMP_PATH"},
+		},
+		&cli.BoolFlag{
+			Name:    "debug",
+			Usage:   "remove target folder before upload data",
+			EnvVars: []string{"PLUGIN_DEBUG", "DEBUG", "INPUT_DEBUG"},
+		},
+		&cli.BoolFlag{
+			Name:    "overwrite",
+			Usage:   "use --overwrite flag with tar",
+			EnvVars: []string{"PLUGIN_OVERWRITE", "SCP_OVERWRITE", "INPUT_OVERWRITE"},
 		},
 	}
 
@@ -168,14 +284,13 @@ VERSION:
 REPOSITORY:
     Github: https://github.com/appleboy/drone-scp
 `
-	app.Run(os.Args)
+
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 }
 
 func run(c *cli.Context) error {
-	if c.String("env-file") != "" {
-		_ = godotenv.Load(c.String("env-file"))
-	}
-
 	plugin := Plugin{
 		Repo: Repo{
 			Owner: c.String("repo.owner"),
@@ -192,16 +307,39 @@ func run(c *cli.Context) error {
 			Link:    c.String("build.link"),
 		},
 		Config: Config{
-			Host:     c.StringSlice("host"),
-			Port:     c.String("port"),
-			Username: c.String("username"),
-			Password: c.String("password"),
-			Timeout:  c.Duration("timeout"),
-			Key:      c.String("key"),
-			KeyPath:  c.String("key-path"),
-			Target:   c.StringSlice("target"),
-			Source:   c.StringSlice("source"),
-			Remove:   c.Bool("rm"),
+			Host:              c.StringSlice("host"),
+			Port:              c.String("port"),
+			Username:          c.String("username"),
+			Password:          c.String("password"),
+			Passphrase:        c.String("ssh-passphrase"),
+			Fingerprint:       c.String("fingerprint"),
+			Timeout:           c.Duration("timeout"),
+			CommandTimeout:    c.Duration("command.timeout"),
+			Key:               c.String("ssh-key"),
+			KeyPath:           c.String("key-path"),
+			Target:            c.StringSlice("target"),
+			Source:            c.StringSlice("source"),
+			Remove:            c.Bool("rm"),
+			Debug:             c.Bool("debug"),
+			StripComponents:   c.Int("strip.components"),
+			TarExec:           c.String("tar.exec"),
+			TarTmpPath:        c.String("tar.tmp-path"),
+			Overwrite:         c.Bool("overwrite"),
+			Ciphers:           c.StringSlice("ciphers"),
+			UseInsecureCipher: c.Bool("useInsecureCipher"),
+			Proxy: easyssh.DefaultConfig{
+				Key:               c.String("proxy.ssh-key"),
+				Passphrase:        c.String("proxy.ssh-passphrase"),
+				Fingerprint:       c.String("proxy.fingerprint"),
+				KeyPath:           c.String("proxy.key-path"),
+				User:              c.String("proxy.username"),
+				Password:          c.String("proxy.password"),
+				Server:            c.String("proxy.host"),
+				Port:              c.String("proxy.port"),
+				Timeout:           c.Duration("proxy.timeout"),
+				Ciphers:           c.StringSlice("proxy.ciphers"),
+				UseInsecureCipher: c.Bool("proxy.useInsecureCipher"),
+			},
 		},
 	}
 

path.go

@@ -1,4 +1,4 @@
-// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
+// +build !windows
 
 package main
 

path_windows_test.go

@@ -1,6 +1,8 @@
 package main
 
-import "testing"
+import (
+	"testing"
+)
 
 func TestGetRealPath(t *testing.T) {
 	type args struct {

pipeline.libsonnet

@@ -0,0 +1,256 @@
+{
+  test:: {
+    kind: 'pipeline',
+    name: 'testing',
+    platform: {
+      os: 'linux',
+      arch: 'amd64',
+    },
+    steps: [
+      {
+        name: 'vet',
+        image: 'golang:1.16',
+        pull: 'always',
+        commands: [
+          'make vet',
+        ],
+        volumes: [
+          {
+            name: 'gopath',
+            path: '/go',
+          },
+        ],
+      },
+      {
+        name: 'lint',
+        image: 'golang:1.16',
+        pull: 'always',
+        commands: [
+          'make lint',
+        ],
+        volumes: [
+          {
+            name: 'gopath',
+            path: '/go',
+          },
+        ],
+      },
+      {
+        name: 'misspell',
+        image: 'golang:1.16',
+        pull: 'always',
+        commands: [
+          'make misspell-check',
+        ],
+        volumes: [
+          {
+            name: 'gopath',
+            path: '/go',
+          },
+        ],
+      },
+      // {
+      //   name: 'test',
+      //   image: 'golang:1.16-alpine',
+      //   pull: 'always',
+      //   commands: [
+      //     'apk add git make curl perl bash build-base zlib-dev ucl-dev',
+      //     'make ssh-server',
+      //     'make test',
+      //     'make coverage',
+      //   ],
+      //   volumes: [
+      //     {
+      //       name: 'gopath',
+      //       path: '/go',
+      //     },
+      //   ],
+      // },
+      {
+        name: 'codecov',
+        image: 'robertstettner/drone-codecov',
+        pull: 'always',
+        settings: {
+          token: { 'from_secret': 'codecov_token' },
+        },
+      },
+    ],
+    volumes: [
+      {
+        name: 'gopath',
+        temp: {},
+      },
+    ],
+  },
+
+  build(name, os='linux', arch='amd64'):: {
+    kind: 'pipeline',
+    name: os + '-' + arch,
+    platform: {
+      os: os,
+      arch: arch,
+    },
+    steps: [
+      {
+        name: 'build-push',
+        image: 'golang:1.16',
+        pull: 'always',
+        environment: {
+          CGO_ENABLED: '0',
+        },
+        commands: [
+          'go build -v -ldflags \'-X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
+        ],
+        when: {
+          event: {
+            exclude: [ 'tag' ],
+          },
+        },
+      },
+      {
+        name: 'build-tag',
+        image: 'golang:1.16',
+        pull: 'always',
+        environment: {
+          CGO_ENABLED: '0',
+        },
+        commands: [
+          'go build -v -ldflags \'-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
+        ],
+        when: {
+          event: [ 'tag' ],
+        },
+      },
+      {
+        name: 'executable',
+        image: 'golang:1.16',
+        pull: 'always',
+        commands: [
+          './release/' + os + '/' + arch + '/' + name + ' --help',
+        ],
+      },
+      {
+        name: 'dryrun',
+        image: 'plugins/docker:' + os + '-' + arch,
+        pull: 'always',
+        settings: {
+          daemon_off: false,
+          dry_run: true,
+          tags: os + '-' + arch,
+          dockerfile: 'docker/Dockerfile.' + os + '.' + arch,
+          repo: 'appleboy/' + name,
+          cache_from: 'appleboy/' + name,
+        },
+        when: {
+          event: [ 'pull_request' ],
+        },
+      },
+      {
+        name: 'publish',
+        image: 'plugins/docker:' + os + '-' + arch,
+        pull: 'always',
+        settings: {
+          daemon_off: 'false',
+          auto_tag: true,
+          auto_tag_suffix: os + '-' + arch,
+          dockerfile: 'docker/Dockerfile.' + os + '.' + arch,
+          repo: 'appleboy/' + name,
+          cache_from: 'appleboy/' + name,
+          username: { 'from_secret': 'docker_username' },
+          password: { 'from_secret': 'docker_password' },
+        },
+        when: {
+          event: {
+            exclude: [ 'pull_request' ],
+          },
+        },
+      },
+    ],
+    depends_on: [
+      'testing',
+    ],
+    trigger: {
+      ref: [
+        'refs/heads/master',
+        'refs/pull/**',
+        'refs/tags/**',
+      ],
+    },
+  },
+
+  release:: {
+    kind: 'pipeline',
+    name: 'release-binary',
+    platform: {
+      os: 'linux',
+      arch: 'amd64',
+    },
+    steps: [
+      {
+        name: 'build-all-binary',
+        image: 'golang:1.16',
+        pull: 'always',
+        commands: [
+          'make release'
+        ],
+        when: {
+          event: [ 'tag' ],
+        },
+      },
+      {
+        name: 'deploy-all-binary',
+        image: 'plugins/github-release',
+        pull: 'always',
+        settings: {
+          files: [ 'dist/release/*' ],
+          api_key: { 'from_secret': 'github_release_api_key' },
+        },
+        when: {
+          event: [ 'tag' ],
+        },
+      },
+    ],
+    depends_on: [
+      'testing',
+    ],
+    trigger: {
+      ref: [
+        'refs/tags/**',
+      ],
+    },
+  },
+
+  notifications(os='linux', arch='amd64', depends_on=[]):: {
+    kind: 'pipeline',
+    name: 'notifications',
+    platform: {
+      os: os,
+      arch: arch,
+    },
+    steps: [
+      {
+        name: 'manifest',
+        image: 'plugins/manifest',
+        pull: 'always',
+        settings: {
+          username: { from_secret: 'docker_username' },
+          password: { from_secret: 'docker_password' },
+          spec: 'docker/manifest.tmpl',
+          ignore_missing: true,
+        },
+      },
+    ],
+    depends_on: depends_on,
+    trigger: {
+      ref: [
+        'refs/heads/master',
+        'refs/tags/**',
+      ],
+    },
+  },
+
+  signature(key):: {
+    kind: 'signature',
+    hmac: key,
+  }
+}

plugin.go

@@ -4,16 +4,24 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
-	"log"
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/appleboy/com/random"
-	"github.com/appleboy/drone-scp/easyssh"
+	"github.com/appleboy/easyssh-proxy"
+	"github.com/fatih/color"
+)
+
+var (
+	errMissingHost           = errors.New("Error: missing server host")
+	errMissingPasswordOrKey  = errors.New("Error: can't connect without a private SSH key or password")
+	errSetPasswordandKey     = errors.New("can't set password and key at the same time")
+	errMissingSourceOrTarget = errors.New("missing source or target config")
 )
 
 type (
@@ -37,27 +45,46 @@ type (
 
 	// Config for the plugin.
 	Config struct {
-		Host     []string
-		Port     string
-		Username string
-		Password string
-		Key      string
-		KeyPath  string
-		Timeout  time.Duration
-		Target   []string
-		Source   []string
-		Remove   bool
+		Host              []string
+		Port              string
+		Username          string
+		Password          string
+		Key               string
+		Passphrase        string
+		Fingerprint       string
+		KeyPath           string
+		Timeout           time.Duration
+		CommandTimeout    time.Duration
+		Target            []string
+		Source            []string
+		Remove            bool
+		StripComponents   int
+		TarExec           string
+		TarTmpPath        string
+		Proxy             easyssh.DefaultConfig
+		Debug             bool
+		Overwrite         bool
+		Ciphers           []string
+		UseInsecureCipher bool
 	}
 
 	// Plugin values.
 	Plugin struct {
-		Repo   Repo
-		Build  Build
-		Config Config
+		Repo     Repo
+		Build    Build
+		Config   Config
+		DestFile string
+	}
+
+	copyError struct {
+		host    string
+		message string
 	}
 )
 
-var wg sync.WaitGroup
+func (e copyError) Error() string {
+	return fmt.Sprintf("error copy file to dest: %s, error message: %s\n", e.host, e.message)
+}
 
 func trimPath(keys []string) []string {
 	var newKeys []string
@@ -74,82 +101,223 @@ func trimPath(keys []string) []string {
 	return newKeys
 }
 
-func globList(paths []string) []string {
-	var newPaths []string
+func globList(paths []string) fileList {
+	var list fileList
 
 	for _, pattern := range paths {
+		ignore := false
 		pattern = strings.Trim(pattern, " ")
+		if string(pattern[0]) == "!" {
+			pattern = pattern[1:]
+			ignore = true
+		}
 		matches, err := filepath.Glob(pattern)
 		if err != nil {
-			log.Printf("Glob error for %q: %s\n", pattern, err)
+			fmt.Printf("Glob error for %q: %s\n", pattern, err)
 			continue
 		}
 
-		newPaths = append(newPaths, matches...)
+		if ignore {
+			list.Ignore = append(list.Ignore, matches...)
+		} else {
+			list.Source = append(list.Source, matches...)
+		}
 	}
 
-	return newPaths
+	return list
+}
+
+func buildArgs(tar string, files fileList) []string {
+	args := []string{}
+	if len(files.Ignore) > 0 {
+		for _, v := range files.Ignore {
+			args = append(args, "--exclude")
+			args = append(args, v)
+		}
+	}
+	args = append(args, "-cf")
+	args = append(args, getRealPath(tar))
+	args = append(args, files.Source...)
+
+	return args
 }
 
 func (p Plugin) log(host string, message ...interface{}) {
-	log.Printf("%s: %s", host, fmt.Sprintln(message...))
+	if count := len(p.Config.Host); count == 1 {
+		fmt.Printf("%s", fmt.Sprintln(message...))
+	} else {
+		fmt.Printf("%s: %s", host, fmt.Sprintln(message...))
+	}
+}
+
+func (p *Plugin) removeDestFile(ssh *easyssh.MakeConfig) error {
+	p.log(ssh.Server, "remove file", p.DestFile)
+	_, errStr, _, err := ssh.Run(fmt.Sprintf("rm -rf %s", p.DestFile), p.Config.CommandTimeout)
+	if err != nil {
+		return err
+	}
+
+	if errStr != "" {
+		return errors.New(errStr)
+	}
+
+	return nil
+}
+
+func (p *Plugin) removeAllDestFile() error {
+	for _, host := range p.Config.Host {
+		ssh := &easyssh.MakeConfig{
+			Server:            host,
+			User:              p.Config.Username,
+			Password:          p.Config.Password,
+			Port:              p.Config.Port,
+			Key:               p.Config.Key,
+			KeyPath:           p.Config.KeyPath,
+			Passphrase:        p.Config.Passphrase,
+			Timeout:           p.Config.Timeout,
+			Ciphers:           p.Config.Ciphers,
+			Fingerprint:       p.Config.Fingerprint,
+			UseInsecureCipher: p.Config.UseInsecureCipher,
+			Proxy: easyssh.DefaultConfig{
+				Server:            p.Config.Proxy.Server,
+				User:              p.Config.Proxy.User,
+				Password:          p.Config.Proxy.Password,
+				Port:              p.Config.Proxy.Port,
+				Key:               p.Config.Proxy.Key,
+				KeyPath:           p.Config.Proxy.KeyPath,
+				Passphrase:        p.Config.Proxy.Passphrase,
+				Timeout:           p.Config.Proxy.Timeout,
+				Ciphers:           p.Config.Proxy.Ciphers,
+				Fingerprint:       p.Config.Proxy.Fingerprint,
+				UseInsecureCipher: p.Config.Proxy.UseInsecureCipher,
+			},
+		}
+
+		// remove tar file
+		err := p.removeDestFile(ssh)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+type fileList struct {
+	Ignore []string
+	Source []string
+}
+
+func (p *Plugin) buildArgs(target string) []string {
+	args := []string{}
+
+	args = append(args,
+		p.Config.TarExec,
+		"-xf",
+		p.DestFile,
+	)
+
+	if p.Config.StripComponents > 0 {
+		args = append(args, "--strip-components")
+		args = append(args, strconv.Itoa(p.Config.StripComponents))
+	}
+
+	if p.Config.Overwrite {
+		args = append(args, "--overwrite")
+	}
+
+	args = append(args,
+		"-C",
+		target,
+	)
+
+	return args
 }
 
 // Exec executes the plugin.
-func (p Plugin) Exec() error {
+func (p *Plugin) Exec() error {
+	if len(p.Config.Host) == 0 {
+		return errMissingHost
+	}
 
-	if len(p.Config.Host) == 0 || len(p.Config.Username) == 0 {
-		return errors.New("missing ssh config (Host, Username)")
+	if len(p.Config.Key) == 0 && len(p.Config.Password) == 0 && len(p.Config.KeyPath) == 0 {
+		return errMissingPasswordOrKey
+	}
+
+	if len(p.Config.Key) != 0 && len(p.Config.Password) != 0 {
+		return errSetPasswordandKey
 	}
 
 	if len(p.Config.Source) == 0 || len(p.Config.Target) == 0 {
-		return errors.New("missing source or target config")
+		return errMissingSourceOrTarget
 	}
 
 	files := globList(trimPath(p.Config.Source))
-	dest := fmt.Sprintf("%s.tar", random.String(10))
+	p.DestFile = fmt.Sprintf("%s.tar", random.String(10))
 
 	// create a temporary file for the archive
 	dir, err := ioutil.TempDir("", "")
 	if err != nil {
 		return err
 	}
-	tar := filepath.Join(dir, dest)
+	tar := filepath.Join(dir, p.DestFile)
 
 	// run archive command
-	log.Println("tar all files into " + tar)
-	args := append(append([]string{}, "-cf", getRealPath(tar)), files...)
-
-	cmd := exec.Command("tar", args...)
+	fmt.Println("tar all files into " + tar)
+	args := buildArgs(tar, files)
+	cmd := exec.Command(p.Config.TarExec, args...)
+	if p.Config.Debug {
+		fmt.Println("$", strings.Join(cmd.Args, " "))
+	}
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	if err := cmd.Run(); err != nil {
 		return err
 	}
 
+	wg := sync.WaitGroup{}
 	wg.Add(len(p.Config.Host))
-	errChannel := make(chan error, 1)
-	finished := make(chan bool, 1)
+	errChannel := make(chan error)
+	finished := make(chan struct{})
 	for _, host := range p.Config.Host {
 		go func(host string) {
 			// Create MakeConfig instance with remote username, server address and path to private key.
 			ssh := &easyssh.MakeConfig{
-				Server:   host,
-				User:     p.Config.Username,
-				Password: p.Config.Password,
-				Port:     p.Config.Port,
-				Key:      p.Config.Key,
-				KeyPath:  p.Config.KeyPath,
-				Timeout:  p.Config.Timeout,
+				Server:            host,
+				User:              p.Config.Username,
+				Password:          p.Config.Password,
+				Port:              p.Config.Port,
+				Key:               p.Config.Key,
+				KeyPath:           p.Config.KeyPath,
+				Passphrase:        p.Config.Passphrase,
+				Timeout:           p.Config.Timeout,
+				Ciphers:           p.Config.Ciphers,
+				Fingerprint:       p.Config.Fingerprint,
+				UseInsecureCipher: p.Config.UseInsecureCipher,
+				Proxy: easyssh.DefaultConfig{
+					Server:            p.Config.Proxy.Server,
+					User:              p.Config.Proxy.User,
+					Password:          p.Config.Proxy.Password,
+					Port:              p.Config.Proxy.Port,
+					Key:               p.Config.Proxy.Key,
+					KeyPath:           p.Config.Proxy.KeyPath,
+					Passphrase:        p.Config.Proxy.Passphrase,
+					Timeout:           p.Config.Proxy.Timeout,
+					Ciphers:           p.Config.Proxy.Ciphers,
+					Fingerprint:       p.Config.Proxy.Fingerprint,
+					UseInsecureCipher: p.Config.Proxy.UseInsecureCipher,
+				},
 			}
 
+			// upload file to the tmp path
+			p.DestFile = fmt.Sprintf("%s%s", p.Config.TarTmpPath, p.DestFile)
+
 			// Call Scp method with file you want to upload to remote server.
 			p.log(host, "scp file to server.")
-			err = ssh.Scp(tar)
-
-			// Handle errors
+			err := ssh.Scp(tar, p.DestFile)
 			if err != nil {
-				errChannel <- err
+				errChannel <- copyError{host, err.Error()}
+				return
 			}
 
 			for _, target := range p.Config.Target {
@@ -157,40 +325,56 @@ func (p Plugin) Exec() error {
 				if p.Config.Remove {
 					p.log(host, "Remove target folder:", target)
 
-					_, err := ssh.Run(fmt.Sprintf("rm -rf %s", target))
-
+					_, _, _, err := ssh.Run(fmt.Sprintf("rm -rf %s", target), p.Config.CommandTimeout)
 					if err != nil {
 						errChannel <- err
+						return
 					}
 				}
 
 				// mkdir path
 				p.log(host, "create folder", target)
-				response, _ := ssh.Run(fmt.Sprintf("mkdir -p %s", target))
+				_, errStr, _, err := ssh.Run(fmt.Sprintf("mkdir -p %s", target), p.Config.CommandTimeout)
+				if err != nil {
+					errChannel <- err
+					return
+				}
 
-				if response != "" {
-					errChannel <- errors.New(response)
+				if len(errStr) != 0 {
+					errChannel <- fmt.Errorf(errStr)
+					return
 				}
 
 				// untar file
-				p.log(host, "untar file", dest)
-				_, err = ssh.Run(fmt.Sprintf("tar -xf %s -C %s", dest, target))
+				p.log(host, "untar file", p.DestFile)
+				commamd := strings.Join(p.buildArgs(target), " ")
+				if p.Config.Debug {
+					fmt.Println("$", commamd)
+				}
+				outStr, errStr, _, err := ssh.Run(commamd, p.Config.CommandTimeout)
+
+				if outStr != "" {
+					p.log(host, "output: ", outStr)
+				}
+
+				if errStr != "" {
+					p.log(host, "error: ", errStr)
+				}
 
 				if err != nil {
 					errChannel <- err
+					return
 				}
 			}
 
 			// remove tar file
-			p.log(host, "remove file", dest)
-			_, err = ssh.Run(fmt.Sprintf("rm -rf %s", dest))
-
+			err = p.removeDestFile(ssh)
 			if err != nil {
 				errChannel <- err
+				return
 			}
 
 			wg.Done()
-
 		}(host)
 	}
 
@@ -203,12 +387,21 @@ func (p Plugin) Exec() error {
 	case <-finished:
 	case err := <-errChannel:
 		if err != nil {
-			fmt.Println("drone-scp error: ", err)
+			c := color.New(color.FgRed)
+			c.Println("drone-scp error: ", err)
+			if _, ok := err.(copyError); !ok {
+				fmt.Println("drone-scp rollback: remove all target tmp file")
+				if err := p.removeAllDestFile(); err != nil {
+					return err
+				}
+			}
 			return err
 		}
 	}
 
-	fmt.Println("Successfully executed transfer data to all host.")
+	fmt.Println("===================================================")
+	fmt.Println("✅ Successfully executed transfer data to all host")
+	fmt.Println("===================================================")
 
 	return nil
 }

plugin_test.go

@@ -1,12 +1,19 @@
 package main
 
 import (
+	"io/ioutil"
+	"log"
 	"os"
 	"os/exec"
 	"os/user"
+	"path/filepath"
+	"reflect"
 	"testing"
+	"time"
 
+	"github.com/appleboy/easyssh-proxy"
 	"github.com/stretchr/testify/assert"
+	"golang.org/x/crypto/ssh"
 )
 
 func TestMissingAllConfig(t *testing.T) {
@@ -45,6 +52,23 @@ func TestMissingSourceConfig(t *testing.T) {
 	assert.NotNil(t, err)
 }
 
+func TestSetPasswordAndKey(t *testing.T) {
+	plugin := Plugin{
+		Config: Config{
+			Host:     []string{"example.com"},
+			Username: "ubuntu",
+			Port:     "443",
+			Password: "1234",
+			Key:      "test",
+		},
+	}
+
+	err := plugin.Exec()
+
+	assert.NotNil(t, err)
+	assert.Equal(t, errSetPasswordandKey, err)
+}
+
 func TestTrimElement(t *testing.T) {
 	var input, result []string
 
@@ -61,7 +85,9 @@ func TestTrimElement(t *testing.T) {
 
 func TestSCPFileFromPublicKey(t *testing.T) {
 	if os.Getenv("SSH_AUTH_SOCK") != "" {
-		exec.Command("eval", "`ssh-agent -k`").Run()
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
 	}
 
 	u, err := user.Lookup("drone-scp")
@@ -71,12 +97,14 @@ func TestSCPFileFromPublicKey(t *testing.T) {
 
 	plugin := Plugin{
 		Config: Config{
-			Host:     []string{"localhost"},
-			Username: "drone-scp",
-			Port:     "22",
-			KeyPath:  "tests/.ssh/id_rsa",
-			Source:   []string{"tests/a.txt", "tests/b.txt"},
-			Target:   []string{u.HomeDir + "/test"},
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "tests/.ssh/id_rsa",
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{filepath.Join(u.HomeDir, "/test")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
 		},
 	}
 
@@ -84,11 +112,11 @@ func TestSCPFileFromPublicKey(t *testing.T) {
 	assert.Nil(t, err)
 
 	// check file exist
-	if _, err := os.Stat(u.HomeDir + "/test/tests/a.txt"); os.IsNotExist(err) {
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test/tests/a.txt")); os.IsNotExist(err) {
 		t.Fatalf("SCP-error: %v", err)
 	}
 
-	if _, err := os.Stat(u.HomeDir + "/test/tests/b.txt"); os.IsNotExist(err) {
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test/tests/b.txt")); os.IsNotExist(err) {
 		t.Fatalf("SCP-error: %v", err)
 	}
 
@@ -100,14 +128,16 @@ func TestSCPFileFromPublicKey(t *testing.T) {
 	assert.Nil(t, err)
 
 	// check file exist
-	if _, err := os.Stat(u.HomeDir + "/test/tests/b.txt"); os.IsExist(err) {
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test/tests/b.txt")); os.IsExist(err) {
 		t.Fatalf("SCP-error: %v", err)
 	}
 }
 
-func TestSCPWildcardFileList(t *testing.T) {
+func TestSCPFileFromPublicKeyWithPassphrase(t *testing.T) {
 	if os.Getenv("SSH_AUTH_SOCK") != "" {
-		exec.Command("eval", "`ssh-agent -k`").Run()
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
 	}
 
 	u, err := user.Lookup("drone-scp")
@@ -117,12 +147,15 @@ func TestSCPWildcardFileList(t *testing.T) {
 
 	plugin := Plugin{
 		Config: Config{
-			Host:     []string{"localhost"},
-			Username: "drone-scp",
-			Port:     "22",
-			KeyPath:  "tests/.ssh/id_rsa",
-			Source:   []string{"tests/global/*"},
-			Target:   []string{u.HomeDir + "/abc"},
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "tests/.ssh/test",
+			Passphrase:     "1234",
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{filepath.Join(u.HomeDir, "/test2")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
 		},
 	}
 
@@ -130,11 +163,289 @@ func TestSCPWildcardFileList(t *testing.T) {
 	assert.Nil(t, err)
 
 	// check file exist
-	if _, err := os.Stat(u.HomeDir + "/abc/tests/global/c.txt"); os.IsNotExist(err) {
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test2/tests/a.txt")); os.IsNotExist(err) {
 		t.Fatalf("SCP-error: %v", err)
 	}
 
-	if _, err := os.Stat(u.HomeDir + "/abc/tests/global/d.txt"); os.IsNotExist(err) {
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test2/tests/b.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestWrongFingerprint(t *testing.T) {
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "./tests/.ssh/id_rsa",
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{filepath.Join(u.HomeDir, "/test2")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
+			Fingerprint:    "wrong",
+		},
+	}
+
+	err = plugin.Exec()
+	log.Println(err)
+	assert.NotNil(t, err)
+}
+
+func getHostPublicKeyFile(keypath string) (ssh.PublicKey, error) {
+	var pubkey ssh.PublicKey
+	var err error
+	buf, err := ioutil.ReadFile(keypath)
+	if err != nil {
+		return nil, err
+	}
+
+	pubkey, _, _, _, err = ssh.ParseAuthorizedKey(buf)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return pubkey, nil
+}
+
+func TestSCPFileFromPublicKeyWithFingerprint(t *testing.T) {
+	if os.Getenv("SSH_AUTH_SOCK") != "" {
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
+	}
+
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	hostKey, err := getHostPublicKeyFile("/etc/ssh/ssh_host_rsa_key.pub")
+	assert.NoError(t, err)
+
+	plugin := Plugin{
+		Config: Config{
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "./tests/.ssh/id_rsa",
+			Fingerprint:    ssh.FingerprintSHA256(hostKey),
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{filepath.Join(u.HomeDir, "/test2")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test2/tests/a.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "/test2/tests/b.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestSCPWildcardFileList(t *testing.T) {
+	if os.Getenv("SSH_AUTH_SOCK") != "" {
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
+	}
+
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "tests/.ssh/id_rsa",
+			Source:         []string{"tests/global/*"},
+			Target:         []string{filepath.Join(u.HomeDir, "abc")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "abc/tests/global/c.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "abc/tests/global/d.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestSCPFromProxySetting(t *testing.T) {
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "tests/.ssh/id_rsa",
+			Source:         []string{"tests/global/*"},
+			Target:         []string{filepath.Join(u.HomeDir, "def")},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
+			Proxy: easyssh.DefaultConfig{
+				Server:  "localhost",
+				User:    "drone-scp",
+				Port:    "22",
+				KeyPath: "./tests/.ssh/id_rsa",
+			},
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "def/tests/global/c.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "def/tests/global/d.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestStripComponentsFlag(t *testing.T) {
+	if os.Getenv("SSH_AUTH_SOCK") != "" {
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
+	}
+
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:            []string{"localhost"},
+			Username:        "drone-scp",
+			Port:            "22",
+			KeyPath:         "tests/.ssh/id_rsa",
+			Source:          []string{"tests/global/*"},
+			StripComponents: 2,
+			Target:          []string{filepath.Join(u.HomeDir, "123")},
+			CommandTimeout:  60 * time.Second,
+			TarExec:         "tar",
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "123/c.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "123/d.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestUseInsecureCipherFlag(t *testing.T) {
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:              []string{"localhost"},
+			Username:          "drone-scp",
+			Port:              "22",
+			KeyPath:           "tests/.ssh/id_rsa",
+			Source:            []string{"tests/global/*"},
+			StripComponents:   2,
+			Target:            []string{filepath.Join(u.HomeDir, "123")},
+			CommandTimeout:    60 * time.Second,
+			TarExec:           "tar",
+			UseInsecureCipher: true,
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "123/c.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "123/d.txt")); os.IsNotExist(err) {
+		t.Fatalf("SCP-error: %v", err)
+	}
+}
+
+func TestIgnoreList(t *testing.T) {
+	if os.Getenv("SSH_AUTH_SOCK") != "" {
+		if err := exec.Command("eval", "`ssh-agent -k`").Run(); err != nil {
+			t.Fatalf("exec: %v", err)
+		}
+	}
+
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
+	plugin := Plugin{
+		Config: Config{
+			Host:            []string{"localhost"},
+			Username:        "drone-scp",
+			Port:            "22",
+			KeyPath:         "tests/.ssh/id_rsa",
+			Source:          []string{"tests/global/*", "!tests/global/c.txt", "!tests/global/e.txt"},
+			StripComponents: 2,
+			Target:          []string{filepath.Join(u.HomeDir, "ignore")},
+			CommandTimeout:  60 * time.Second,
+			TarExec:         "tar",
+			Debug:           true,
+		},
+	}
+
+	err = plugin.Exec()
+	assert.Nil(t, err)
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "ignore/c.txt")); err == nil {
+		t.Fatal("c.txt file exist")
+	}
+
+	// check file exist
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "ignore/e.txt")); err == nil {
+		t.Fatal("c.txt file exist")
+	}
+
+	if _, err := os.Stat(filepath.Join(u.HomeDir, "ignore/d.txt")); os.IsNotExist(err) {
 		t.Fatalf("SCP-error: %v", err)
 	}
 }
@@ -188,12 +499,14 @@ func TestSCPWildcardFileList(t *testing.T) {
 func TestIncorrectPassword(t *testing.T) {
 	plugin := Plugin{
 		Config: Config{
-			Host:     []string{"localhost"},
-			Username: "drone-scp",
-			Port:     "22",
-			Password: "123456",
-			Source:   []string{"tests/a.txt", "tests/b.txt"},
-			Target:   []string{"/home"},
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			Password:       "123456",
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{"/home"},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
 		},
 	}
 
@@ -202,48 +515,182 @@ func TestIncorrectPassword(t *testing.T) {
 }
 
 func TestNoPermissionCreateFolder(t *testing.T) {
+	u, err := user.Lookup("drone-scp")
+	if err != nil {
+		t.Fatalf("Lookup: %v", err)
+	}
+
 	plugin := Plugin{
 		Config: Config{
-			Host:     []string{"localhost"},
-			Username: "drone-scp",
-			Port:     "22",
-			KeyPath:  "tests/.ssh/id_rsa",
-			Source:   []string{"tests/a.txt", "tests/b.txt"},
-			Target:   []string{"/etc/test"},
+			Host:           []string{"localhost"},
+			Username:       "drone-scp",
+			Port:           "22",
+			KeyPath:        "tests/.ssh/id_rsa",
+			Source:         []string{"tests/a.txt", "tests/b.txt"},
+			Target:         []string{"/etc/test"},
+			CommandTimeout: 60 * time.Second,
+			TarExec:        "tar",
 		},
 	}
 
-	err := plugin.Exec()
+	err = plugin.Exec()
 	assert.NotNil(t, err)
-}
 
-func TestSourceNotFound(t *testing.T) {
-	plugin := Plugin{
-		Config: Config{
-			Host:     []string{"localhost"},
-			Username: "drone-scp",
-			Port:     "22",
-			KeyPath:  "tests/.ssh/id_rsa",
-			Source:   []string{"tests/aa.txt", "tests/b.txt"},
-			Target:   []string{"/test"},
-		},
+	// check tmp file exist
+	if _, err = os.Stat(filepath.Join(u.HomeDir, plugin.DestFile)); os.IsExist(err) {
+		t.Fatalf("SCP-error: %v", err)
 	}
-
-	err := plugin.Exec()
-	assert.NotNil(t, err)
 }
 
 func TestGlobList(t *testing.T) {
 	// wrong patern
 	paterns := []string{"[]a]", "tests/?.txt"}
 	expects := []string{"tests/a.txt", "tests/b.txt"}
-	assert.Equal(t, expects, globList(paterns))
+	assert.Equal(t, expects, globList(paterns).Source)
 
 	paterns = []string{"tests/*.txt", "tests/.ssh/*", "abc*"}
-	expects = []string{"tests/a.txt", "tests/b.txt", "tests/.ssh/id_rsa", "tests/.ssh/id_rsa.pub"}
-	assert.Equal(t, expects, globList(paterns))
+	expects = []string{"tests/a.txt", "tests/b.txt", "tests/.ssh/id_rsa", "tests/.ssh/id_rsa.pub", "tests/.ssh/test", "tests/.ssh/test.pub"}
+	assert.Equal(t, expects, globList(paterns).Source)
 
 	paterns = []string{"tests/?.txt"}
 	expects = []string{"tests/a.txt", "tests/b.txt"}
-	assert.Equal(t, expects, globList(paterns))
+	assert.Equal(t, expects, globList(paterns).Source)
+
+	// remove item which file not found.
+	paterns = []string{"tests/aa.txt", "tests/b.txt"}
+	expects = []string{"tests/b.txt"}
+	assert.Equal(t, expects, globList(paterns).Source)
+
+	paterns = []string{"./tests/b.txt"}
+	expects = []string{"./tests/b.txt"}
+	assert.Equal(t, expects, globList(paterns).Source)
+
+	paterns = []string{"./tests/*.txt", "!./tests/b.txt"}
+	expectSources := []string{"tests/a.txt", "tests/b.txt"}
+	expectIgnores := []string{"./tests/b.txt"}
+	result := globList(paterns)
+	assert.Equal(t, expectSources, result.Source)
+	assert.Equal(t, expectIgnores, result.Ignore)
+}
+
+func TestBuildArgs(t *testing.T) {
+	list := fileList{
+		Source: []string{"tests/a.txt", "tests/b.txt", "tests/c.txt"},
+		Ignore: []string{"tests/a.txt", "tests/b.txt"},
+	}
+
+	result := buildArgs("test.tar.gz", list)
+	expects := []string{"--exclude", "tests/a.txt", "--exclude", "tests/b.txt", "-cf", "test.tar.gz", "tests/a.txt", "tests/b.txt", "tests/c.txt"}
+	assert.Equal(t, expects, result)
+
+	list = fileList{
+		Source: []string{"tests/a.txt", "tests/b.txt"},
+	}
+
+	result = buildArgs("test.tar.gz", list)
+	expects = []string{"-cf", "test.tar.gz", "tests/a.txt", "tests/b.txt"}
+	assert.Equal(t, expects, result)
+}
+
+func TestRemoveDestFile(t *testing.T) {
+	ssh := &easyssh.MakeConfig{
+		Server:  "localhost",
+		User:    "drone-scp",
+		Port:    "22",
+		KeyPath: "tests/.ssh/id_rsa",
+		// io timeout
+		Timeout: 1,
+	}
+	plugin := Plugin{
+		Config: Config{
+			CommandTimeout: 60 * time.Second,
+		},
+		DestFile: "/etc/resolv.conf",
+	}
+
+	// ssh io timeout
+	err := plugin.removeDestFile(ssh)
+	assert.Error(t, err)
+
+	ssh.Timeout = 0
+
+	// permission denied
+	err = plugin.removeDestFile(ssh)
+	assert.Error(t, err)
+}
+
+func TestPlugin_buildArgs(t *testing.T) {
+	type fields struct {
+		Repo     Repo
+		Build    Build
+		Config   Config
+		DestFile string
+	}
+	type args struct {
+		target string
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   []string
+	}{
+		{
+			name: "default command",
+			fields: fields{
+				Config: Config{
+					Overwrite: false,
+					TarExec:   "tar",
+				},
+				DestFile: "foo.tar",
+			},
+			args: args{
+				target: "foo",
+			},
+			want: []string{"tar", "-xf", "foo.tar", "-C", "foo"},
+		},
+		{
+			name: "strip components",
+			fields: fields{
+				Config: Config{
+					Overwrite:       false,
+					TarExec:         "tar",
+					StripComponents: 2,
+				},
+				DestFile: "foo.tar",
+			},
+			args: args{
+				target: "foo",
+			},
+			want: []string{"tar", "-xf", "foo.tar", "--strip-components", "2", "-C", "foo"},
+		},
+		{
+			name: "overwrite",
+			fields: fields{
+				Config: Config{
+					TarExec:         "tar",
+					StripComponents: 2,
+					Overwrite:       true,
+				},
+				DestFile: "foo.tar",
+			},
+			args: args{
+				target: "foo",
+			},
+			want: []string{"tar", "-xf", "foo.tar", "--strip-components", "2", "--overwrite", "-C", "foo"},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			p := &Plugin{
+				Repo:     tt.fields.Repo,
+				Build:    tt.fields.Build,
+				Config:   tt.fields.Config,
+				DestFile: tt.fields.DestFile,
+			}
+			if got := p.buildArgs(tt.args.target); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Plugin.buildArgs() = %v, want %v", got, tt.want)
+			}
+		})
+	}
 }

tests/.ssh/test

@@ -0,0 +1,50 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABAZka7A7i
+FscMeJBPyPteclAAAAEAAAAAEAAAIXAAAAB3NzaC1yc2EAAAADAQABAAACAQDz6aZ1jY2o
+nnuj2YNHJ/HhfvIu0B973v/+pFFOavnTUOhEEKEy3TASu+s9CkHrYZAtRc+QYIkNZI31mh
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+rK7j7u2/big3oTzYBuFrCwmYFcz5na99MzFeAUhazF44gVBma+zO+1quGeqF51UDIg1SMG
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+cTRGjUkgw/cF2EFRGWknee2esYRB7tOr4y56qZ4gxqw8q9rYXhyB42jbdTvt5xcCm/ynid
+sn4InokRRoIiMIPL5Ur7FZQHOP+915MWUBsrTJtkCWQuqJheYUi3mCzh/7NadAKplRpaKb
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+l4njcaMpg4tpQMHtCBOicGyV0=
+-----END OPENSSH PRIVATE KEY-----

tests/.ssh/test.pub

@@ -0,0 +1 @@
+ssh-rsa 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 deploy@easyssh

tests/a.txt

@@ -0,0 +1 @@
+appleboy

vendor/github.com/appleboy/com/LICENSE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2016 Bo-Yi Wu
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

vendor/github.com/appleboy/com/random/random.go

@@ -1,39 +0,0 @@
-package random
-
-import (
-	"math/rand"
-	"time"
-)
-
-type (
-	// Charset is string type
-	Charset string
-)
-
-const (
-	// Alphanumeric contain Alphabetic and Numeric
-	Alphanumeric Charset = Alphabetic + Numeric
-	// Alphabetic is \w+ \W
-	Alphabetic Charset = "abcdefghijklmnopqrstuvwxyz" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	// Numeric is number list
-	Numeric Charset = "0123456789"
-	// Hex is Hexadecimal
-	Hex Charset = Numeric + "abcdef"
-)
-
-var seededRand = rand.New(
-	rand.NewSource(time.Now().UnixNano()))
-
-// StringWithCharset support rand string you defined
-func StringWithCharset(length int, charset Charset) string {
-	b := make([]byte, length)
-	for i := range b {
-		b[i] = charset[seededRand.Intn(len(charset))]
-	}
-	return string(b)
-}
-
-// String supply rand string
-func String(length int) string {
-	return StringWithCharset(length, Alphanumeric)
-}

vendor/github.com/davecgh/go-spew/LICENSE

@@ -1,15 +0,0 @@
-ISC License
-
-Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -1,152 +0,0 @@
-// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
-//
-// Permission to use, copy, modify, and distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice appear in all copies.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-// NOTE: Due to the following build constraints, this file will only be compiled
-// when the code is not running on Google App Engine, compiled by GopherJS, and
-// "-tags safe" is not added to the go build command line.  The "disableunsafe"
-// tag is deprecated and thus should not be used.
-// +build !js,!appengine,!safe,!disableunsafe
-
-package spew
-
-import (
-	"reflect"
-	"unsafe"
-)
-
-const (
-	// UnsafeDisabled is a build-time constant which specifies whether or
-	// not access to the unsafe package is available.
-	UnsafeDisabled = false
-
-	// ptrSize is the size of a pointer on the current arch.
-	ptrSize = unsafe.Sizeof((*byte)(nil))
-)
-
-var (
-	// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
-	// internal reflect.Value fields.  These values are valid before golang
-	// commit ecccf07e7f9d which changed the format.  The are also valid
-	// after commit 82f48826c6c7 which changed the format again to mirror
-	// the original format.  Code in the init function updates these offsets
-	// as necessary.
-	offsetPtr    = uintptr(ptrSize)
-	offsetScalar = uintptr(0)
-	offsetFlag   = uintptr(ptrSize * 2)
-
-	// flagKindWidth and flagKindShift indicate various bits that the
-	// reflect package uses internally to track kind information.
-	//
-	// flagRO indicates whether or not the value field of a reflect.Value is
-	// read-only.
-	//
-	// flagIndir indicates whether the value field of a reflect.Value is
-	// the actual data or a pointer to the data.
-	//
-	// These values are valid before golang commit 90a7c3c86944 which
-	// changed their positions.  Code in the init function updates these
-	// flags as necessary.
-	flagKindWidth = uintptr(5)
-	flagKindShift = uintptr(flagKindWidth - 1)
-	flagRO        = uintptr(1 << 0)
-	flagIndir     = uintptr(1 << 1)
-)
-
-func init() {
-	// Older versions of reflect.Value stored small integers directly in the
-	// ptr field (which is named val in the older versions).  Versions
-	// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
-	// scalar for this purpose which unfortunately came before the flag
-	// field, so the offset of the flag field is different for those
-	// versions.
-	//
-	// This code constructs a new reflect.Value from a known small integer
-	// and checks if the size of the reflect.Value struct indicates it has
-	// the scalar field. When it does, the offsets are updated accordingly.
-	vv := reflect.ValueOf(0xf00)
-	if unsafe.Sizeof(vv) == (ptrSize * 4) {
-		offsetScalar = ptrSize * 2
-		offsetFlag = ptrSize * 3
-	}
-
-	// Commit 90a7c3c86944 changed the flag positions such that the low
-	// order bits are the kind.  This code extracts the kind from the flags
-	// field and ensures it's the correct type.  When it's not, the flag
-	// order has been changed to the newer format, so the flags are updated
-	// accordingly.
-	upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
-	upfv := *(*uintptr)(upf)
-	flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
-	if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
-		flagKindShift = 0
-		flagRO = 1 << 5
-		flagIndir = 1 << 6
-
-		// Commit adf9b30e5594 modified the flags to separate the
-		// flagRO flag into two bits which specifies whether or not the
-		// field is embedded.  This causes flagIndir to move over a bit
-		// and means that flagRO is the combination of either of the
-		// original flagRO bit and the new bit.
-		//
-		// This code detects the change by extracting what used to be
-		// the indirect bit to ensure it's set.  When it's not, the flag
-		// order has been changed to the newer format, so the flags are
-		// updated accordingly.
-		if upfv&flagIndir == 0 {
-			flagRO = 3 << 5
-			flagIndir = 1 << 7
-		}
-	}
-}
-
-// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
-// the typical safety restrictions preventing access to unaddressable and
-// unexported data.  It works by digging the raw pointer to the underlying
-// value out of the protected value and generating a new unprotected (unsafe)
-// reflect.Value to it.
-//
-// This allows us to check for implementations of the Stringer and error
-// interfaces to be used for pretty printing ordinarily unaddressable and
-// inaccessible values such as unexported struct fields.
-func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
-	indirects := 1
-	vt := v.Type()
-	upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
-	rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
-	if rvf&flagIndir != 0 {
-		vt = reflect.PtrTo(v.Type())
-		indirects++
-	} else if offsetScalar != 0 {
-		// The value is in the scalar field when it's not one of the
-		// reference types.
-		switch vt.Kind() {
-		case reflect.Uintptr:
-		case reflect.Chan:
-		case reflect.Func:
-		case reflect.Map:
-		case reflect.Ptr:
-		case reflect.UnsafePointer:
-		default:
-			upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
-				offsetScalar)
-		}
-	}
-
-	pv := reflect.NewAt(vt, upv)
-	rv = pv
-	for i := 0; i < indirects; i++ {
-		rv = rv.Elem()
-	}
-	return rv
-}

vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -1,38 +0,0 @@
-// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
-//
-// Permission to use, copy, modify, and distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice appear in all copies.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-// NOTE: Due to the following build constraints, this file will only be compiled
-// when the code is running on Google App Engine, compiled by GopherJS, or
-// "-tags safe" is added to the go build command line.  The "disableunsafe"
-// tag is deprecated and thus should not be used.
-// +build js appengine safe disableunsafe
-
-package spew
-
-import "reflect"
-
-const (
-	// UnsafeDisabled is a build-time constant which specifies whether or
-	// not access to the unsafe package is available.
-	UnsafeDisabled = true
-)
-
-// unsafeReflectValue typically converts the passed reflect.Value into a one
-// that bypasses the typical safety restrictions preventing access to
-// unaddressable and unexported data.  However, doing this relies on access to
-// the unsafe package.  This is a stub version which simply returns the passed
-// reflect.Value when the unsafe package is not available.
-func unsafeReflectValue(v reflect.Value) reflect.Value {
-	return v
-}

vendor/github.com/davecgh/go-spew/spew/common.go

@@ -1,341 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-package spew
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"reflect"
-	"sort"
-	"strconv"
-)
-
-// Some constants in the form of bytes to avoid string overhead.  This mirrors
-// the technique used in the fmt package.
-var (
-	panicBytes            = []byte("(PANIC=")
-	plusBytes             = []byte("+")
-	iBytes                = []byte("i")
-	trueBytes             = []byte("true")
-	falseBytes            = []byte("false")
-	interfaceBytes        = []byte("(interface {})")
-	commaNewlineBytes     = []byte(",\n")
-	newlineBytes          = []byte("\n")
-	openBraceBytes        = []byte("{")
-	openBraceNewlineBytes = []byte("{\n")
-	closeBraceBytes       = []byte("}")
-	asteriskBytes         = []byte("*")
-	colonBytes            = []byte(":")
-	colonSpaceBytes       = []byte(": ")
-	openParenBytes        = []byte("(")
-	closeParenBytes       = []byte(")")
-	spaceBytes            = []byte(" ")
-	pointerChainBytes     = []byte("->")
-	nilAngleBytes         = []byte("<nil>")
-	maxNewlineBytes       = []byte("<max depth reached>\n")
-	maxShortBytes         = []byte("<max>")
-	circularBytes         = []byte("<already shown>")
-	circularShortBytes    = []byte("<shown>")
-	invalidAngleBytes     = []byte("<invalid>")
-	openBracketBytes      = []byte("[")
-	closeBracketBytes     = []byte("]")
-	percentBytes          = []byte("%")
-	precisionBytes        = []byte(".")
-	openAngleBytes        = []byte("<")
-	closeAngleBytes       = []byte(">")
-	openMapBytes          = []byte("map[")
-	closeMapBytes         = []byte("]")
-	lenEqualsBytes        = []byte("len=")
-	capEqualsBytes        = []byte("cap=")
-)
-
-// hexDigits is used to map a decimal value to a hex digit.
-var hexDigits = "0123456789abcdef"
-
-// catchPanic handles any panics that might occur during the handleMethods
-// calls.
-func catchPanic(w io.Writer, v reflect.Value) {
-	if err := recover(); err != nil {
-		w.Write(panicBytes)
-		fmt.Fprintf(w, "%v", err)
-		w.Write(closeParenBytes)
-	}
-}
-
-// handleMethods attempts to call the Error and String methods on the underlying
-// type the passed reflect.Value represents and outputes the result to Writer w.
-//
-// It handles panics in any called methods by catching and displaying the error
-// as the formatted value.
-func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
-	// We need an interface to check if the type implements the error or
-	// Stringer interface.  However, the reflect package won't give us an
-	// interface on certain things like unexported struct fields in order
-	// to enforce visibility rules.  We use unsafe, when it's available,
-	// to bypass these restrictions since this package does not mutate the
-	// values.
-	if !v.CanInterface() {
-		if UnsafeDisabled {
-			return false
-		}
-
-		v = unsafeReflectValue(v)
-	}
-
-	// Choose whether or not to do error and Stringer interface lookups against
-	// the base type or a pointer to the base type depending on settings.
-	// Technically calling one of these methods with a pointer receiver can
-	// mutate the value, however, types which choose to satisify an error or
-	// Stringer interface with a pointer receiver should not be mutating their
-	// state inside these interface methods.
-	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
-		v = unsafeReflectValue(v)
-	}
-	if v.CanAddr() {
-		v = v.Addr()
-	}
-
-	// Is it an error or Stringer?
-	switch iface := v.Interface().(type) {
-	case error:
-		defer catchPanic(w, v)
-		if cs.ContinueOnMethod {
-			w.Write(openParenBytes)
-			w.Write([]byte(iface.Error()))
-			w.Write(closeParenBytes)
-			w.Write(spaceBytes)
-			return false
-		}
-
-		w.Write([]byte(iface.Error()))
-		return true
-
-	case fmt.Stringer:
-		defer catchPanic(w, v)
-		if cs.ContinueOnMethod {
-			w.Write(openParenBytes)
-			w.Write([]byte(iface.String()))
-			w.Write(closeParenBytes)
-			w.Write(spaceBytes)
-			return false
-		}
-		w.Write([]byte(iface.String()))
-		return true
-	}
-	return false
-}
-
-// printBool outputs a boolean value as true or false to Writer w.
-func printBool(w io.Writer, val bool) {
-	if val {
-		w.Write(trueBytes)
-	} else {
-		w.Write(falseBytes)
-	}
-}
-
-// printInt outputs a signed integer value to Writer w.
-func printInt(w io.Writer, val int64, base int) {
-	w.Write([]byte(strconv.FormatInt(val, base)))
-}
-
-// printUint outputs an unsigned integer value to Writer w.
-func printUint(w io.Writer, val uint64, base int) {
-	w.Write([]byte(strconv.FormatUint(val, base)))
-}
-
-// printFloat outputs a floating point value using the specified precision,
-// which is expected to be 32 or 64bit, to Writer w.
-func printFloat(w io.Writer, val float64, precision int) {
-	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
-}
-
-// printComplex outputs a complex value using the specified float precision
-// for the real and imaginary parts to Writer w.
-func printComplex(w io.Writer, c complex128, floatPrecision int) {
-	r := real(c)
-	w.Write(openParenBytes)
-	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
-	i := imag(c)
-	if i >= 0 {
-		w.Write(plusBytes)
-	}
-	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
-	w.Write(iBytes)
-	w.Write(closeParenBytes)
-}
-
-// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
-// prefix to Writer w.
-func printHexPtr(w io.Writer, p uintptr) {
-	// Null pointer.
-	num := uint64(p)
-	if num == 0 {
-		w.Write(nilAngleBytes)
-		return
-	}
-
-	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
-	buf := make([]byte, 18)
-
-	// It's simpler to construct the hex string right to left.
-	base := uint64(16)
-	i := len(buf) - 1
-	for num >= base {
-		buf[i] = hexDigits[num%base]
-		num /= base
-		i--
-	}
-	buf[i] = hexDigits[num]
-
-	// Add '0x' prefix.
-	i--
-	buf[i] = 'x'
-	i--
-	buf[i] = '0'
-
-	// Strip unused leading bytes.
-	buf = buf[i:]
-	w.Write(buf)
-}
-
-// valuesSorter implements sort.Interface to allow a slice of reflect.Value
-// elements to be sorted.
-type valuesSorter struct {
-	values  []reflect.Value
-	strings []string // either nil or same len and values
-	cs      *ConfigState
-}
-
-// newValuesSorter initializes a valuesSorter instance, which holds a set of
-// surrogate keys on which the data should be sorted.  It uses flags in
-// ConfigState to decide if and how to populate those surrogate keys.
-func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
-	vs := &valuesSorter{values: values, cs: cs}
-	if canSortSimply(vs.values[0].Kind()) {
-		return vs
-	}
-	if !cs.DisableMethods {
-		vs.strings = make([]string, len(values))
-		for i := range vs.values {
-			b := bytes.Buffer{}
-			if !handleMethods(cs, &b, vs.values[i]) {
-				vs.strings = nil
-				break
-			}
-			vs.strings[i] = b.String()
-		}
-	}
-	if vs.strings == nil && cs.SpewKeys {
-		vs.strings = make([]string, len(values))
-		for i := range vs.values {
-			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
-		}
-	}
-	return vs
-}
-
-// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
-// directly, or whether it should be considered for sorting by surrogate keys
-// (if the ConfigState allows it).
-func canSortSimply(kind reflect.Kind) bool {
-	// This switch parallels valueSortLess, except for the default case.
-	switch kind {
-	case reflect.Bool:
-		return true
-	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
-		return true
-	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-		return true
-	case reflect.Float32, reflect.Float64:
-		return true
-	case reflect.String:
-		return true
-	case reflect.Uintptr:
-		return true
-	case reflect.Array:
-		return true
-	}
-	return false
-}
-
-// Len returns the number of values in the slice.  It is part of the
-// sort.Interface implementation.
-func (s *valuesSorter) Len() int {
-	return len(s.values)
-}
-
-// Swap swaps the values at the passed indices.  It is part of the
-// sort.Interface implementation.
-func (s *valuesSorter) Swap(i, j int) {
-	s.values[i], s.values[j] = s.values[j], s.values[i]
-	if s.strings != nil {
-		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
-	}
-}
-
-// valueSortLess returns whether the first value should sort before the second
-// value.  It is used by valueSorter.Less as part of the sort.Interface
-// implementation.
-func valueSortLess(a, b reflect.Value) bool {
-	switch a.Kind() {
-	case reflect.Bool:
-		return !a.Bool() && b.Bool()
-	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
-		return a.Int() < b.Int()
-	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-		return a.Uint() < b.Uint()
-	case reflect.Float32, reflect.Float64:
-		return a.Float() < b.Float()
-	case reflect.String:
-		return a.String() < b.String()
-	case reflect.Uintptr:
-		return a.Uint() < b.Uint()
-	case reflect.Array:
-		// Compare the contents of both arrays.
-		l := a.Len()
-		for i := 0; i < l; i++ {
-			av := a.Index(i)
-			bv := b.Index(i)
-			if av.Interface() == bv.Interface() {
-				continue
-			}
-			return valueSortLess(av, bv)
-		}
-	}
-	return a.String() < b.String()
-}
-
-// Less returns whether the value at index i should sort before the
-// value at index j.  It is part of the sort.Interface implementation.
-func (s *valuesSorter) Less(i, j int) bool {
-	if s.strings == nil {
-		return valueSortLess(s.values[i], s.values[j])
-	}
-	return s.strings[i] < s.strings[j]
-}
-
-// sortValues is a sort function that handles both native types and any type that
-// can be converted to error or Stringer.  Other inputs are sorted according to
-// their Value.String() value to ensure display stability.
-func sortValues(values []reflect.Value, cs *ConfigState) {
-	if len(values) == 0 {
-		return
-	}
-	sort.Sort(newValuesSorter(values, cs))
-}

vendor/github.com/davecgh/go-spew/spew/config.go

@@ -1,306 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-package spew
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"os"
-)
-
-// ConfigState houses the configuration options used by spew to format and
-// display values.  There is a global instance, Config, that is used to control
-// all top-level Formatter and Dump functionality.  Each ConfigState instance
-// provides methods equivalent to the top-level functions.
-//
-// The zero value for ConfigState provides no indentation.  You would typically
-// want to set it to a space or a tab.
-//
-// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
-// with default settings.  See the documentation of NewDefaultConfig for default
-// values.
-type ConfigState struct {
-	// Indent specifies the string to use for each indentation level.  The
-	// global config instance that all top-level functions use set this to a
-	// single space by default.  If you would like more indentation, you might
-	// set this to a tab with "\t" or perhaps two spaces with "  ".
-	Indent string
-
-	// MaxDepth controls the maximum number of levels to descend into nested
-	// data structures.  The default, 0, means there is no limit.
-	//
-	// NOTE: Circular data structures are properly detected, so it is not
-	// necessary to set this value unless you specifically want to limit deeply
-	// nested data structures.
-	MaxDepth int
-
-	// DisableMethods specifies whether or not error and Stringer interfaces are
-	// invoked for types that implement them.
-	DisableMethods bool
-
-	// DisablePointerMethods specifies whether or not to check for and invoke
-	// error and Stringer interfaces on types which only accept a pointer
-	// receiver when the current type is not a pointer.
-	//
-	// NOTE: This might be an unsafe action since calling one of these methods
-	// with a pointer receiver could technically mutate the value, however,
-	// in practice, types which choose to satisify an error or Stringer
-	// interface with a pointer receiver should not be mutating their state
-	// inside these interface methods.  As a result, this option relies on
-	// access to the unsafe package, so it will not have any effect when
-	// running in environments without access to the unsafe package such as
-	// Google App Engine or with the "safe" build tag specified.
-	DisablePointerMethods bool
-
-	// DisablePointerAddresses specifies whether to disable the printing of
-	// pointer addresses. This is useful when diffing data structures in tests.
-	DisablePointerAddresses bool
-
-	// DisableCapacities specifies whether to disable the printing of capacities
-	// for arrays, slices, maps and channels. This is useful when diffing
-	// data structures in tests.
-	DisableCapacities bool
-
-	// ContinueOnMethod specifies whether or not recursion should continue once
-	// a custom error or Stringer interface is invoked.  The default, false,
-	// means it will print the results of invoking the custom error or Stringer
-	// interface and return immediately instead of continuing to recurse into
-	// the internals of the data type.
-	//
-	// NOTE: This flag does not have any effect if method invocation is disabled
-	// via the DisableMethods or DisablePointerMethods options.
-	ContinueOnMethod bool
-
-	// SortKeys specifies map keys should be sorted before being printed. Use
-	// this to have a more deterministic, diffable output.  Note that only
-	// native types (bool, int, uint, floats, uintptr and string) and types
-	// that support the error or Stringer interfaces (if methods are
-	// enabled) are supported, with other types sorted according to the
-	// reflect.Value.String() output which guarantees display stability.
-	SortKeys bool
-
-	// SpewKeys specifies that, as a last resort attempt, map keys should
-	// be spewed to strings and sorted by those strings.  This is only
-	// considered if SortKeys is true.
-	SpewKeys bool
-}
-
-// Config is the active configuration of the top-level functions.
-// The configuration can be changed by modifying the contents of spew.Config.
-var Config = ConfigState{Indent: " "}
-
-// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the formatted string as a value that satisfies error.  See NewFormatter
-// for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
-	return fmt.Errorf(format, c.convertArgs(a)...)
-}
-
-// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
-	return fmt.Fprint(w, c.convertArgs(a)...)
-}
-
-// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
-	return fmt.Fprintf(w, format, c.convertArgs(a)...)
-}
-
-// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
-// passed with a Formatter interface returned by c.NewFormatter.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
-	return fmt.Fprintln(w, c.convertArgs(a)...)
-}
-
-// Print is a wrapper for fmt.Print that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
-	return fmt.Print(c.convertArgs(a)...)
-}
-
-// Printf is a wrapper for fmt.Printf that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
-	return fmt.Printf(format, c.convertArgs(a)...)
-}
-
-// Println is a wrapper for fmt.Println that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
-	return fmt.Println(c.convertArgs(a)...)
-}
-
-// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Sprint(a ...interface{}) string {
-	return fmt.Sprint(c.convertArgs(a)...)
-}
-
-// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
-// passed with a Formatter interface returned by c.NewFormatter.  It returns
-// the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
-	return fmt.Sprintf(format, c.convertArgs(a)...)
-}
-
-// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
-// were passed with a Formatter interface returned by c.NewFormatter.  It
-// returns the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
-func (c *ConfigState) Sprintln(a ...interface{}) string {
-	return fmt.Sprintln(c.convertArgs(a)...)
-}
-
-/*
-NewFormatter returns a custom formatter that satisfies the fmt.Formatter
-interface.  As a result, it integrates cleanly with standard fmt package
-printing functions.  The formatter is useful for inline printing of smaller data
-types similar to the standard %v format specifier.
-
-The custom formatter only responds to the %v (most compact), %+v (adds pointer
-addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
-combinations.  Any other verbs such as %x and %q will be sent to the the
-standard fmt package for formatting.  In addition, the custom formatter ignores
-the width and precision arguments (however they will still work on the format
-specifiers not handled by the custom formatter).
-
-Typically this function shouldn't be called directly.  It is much easier to make
-use of the custom formatter by calling one of the convenience functions such as
-c.Printf, c.Println, or c.Printf.
-*/
-func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
-	return newFormatter(c, v)
-}
-
-// Fdump formats and displays the passed arguments to io.Writer w.  It formats
-// exactly the same as Dump.
-func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
-	fdump(c, w, a...)
-}
-
-/*
-Dump displays the passed parameters to standard out with newlines, customizable
-indentation, and additional debug information such as complete types and all
-pointer addresses used to indirect to the final value.  It provides the
-following features over the built-in printing facilities provided by the fmt
-package:
-
-	* Pointers are dereferenced and followed
-	* Circular data structures are detected and handled properly
-	* Custom Stringer/error interfaces are optionally invoked, including
-	  on unexported types
-	* Custom types which only implement the Stringer/error interfaces via
-	  a pointer receiver are optionally invoked when passing non-pointer
-	  variables
-	* Byte arrays and slices are dumped like the hexdump -C command which
-	  includes offsets, byte values in hex, and ASCII output
-
-The configuration options are controlled by modifying the public members
-of c.  See ConfigState for options documentation.
-
-See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
-get the formatted result as a string.
-*/
-func (c *ConfigState) Dump(a ...interface{}) {
-	fdump(c, os.Stdout, a...)
-}
-
-// Sdump returns a string with the passed arguments formatted exactly the same
-// as Dump.
-func (c *ConfigState) Sdump(a ...interface{}) string {
-	var buf bytes.Buffer
-	fdump(c, &buf, a...)
-	return buf.String()
-}
-
-// convertArgs accepts a slice of arguments and returns a slice of the same
-// length with each argument converted to a spew Formatter interface using
-// the ConfigState associated with s.
-func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
-	formatters = make([]interface{}, len(args))
-	for index, arg := range args {
-		formatters[index] = newFormatter(c, arg)
-	}
-	return formatters
-}
-
-// NewDefaultConfig returns a ConfigState with the following default settings.
-//
-// 	Indent: " "
-// 	MaxDepth: 0
-// 	DisableMethods: false
-// 	DisablePointerMethods: false
-// 	ContinueOnMethod: false
-// 	SortKeys: false
-func NewDefaultConfig() *ConfigState {
-	return &ConfigState{Indent: " "}
-}

vendor/github.com/davecgh/go-spew/spew/doc.go

@@ -1,211 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-/*
-Package spew implements a deep pretty printer for Go data structures to aid in
-debugging.
-
-A quick overview of the additional features spew provides over the built-in
-printing facilities for Go data types are as follows:
-
-	* Pointers are dereferenced and followed
-	* Circular data structures are detected and handled properly
-	* Custom Stringer/error interfaces are optionally invoked, including
-	  on unexported types
-	* Custom types which only implement the Stringer/error interfaces via
-	  a pointer receiver are optionally invoked when passing non-pointer
-	  variables
-	* Byte arrays and slices are dumped like the hexdump -C command which
-	  includes offsets, byte values in hex, and ASCII output (only when using
-	  Dump style)
-
-There are two different approaches spew allows for dumping Go data structures:
-
-	* Dump style which prints with newlines, customizable indentation,
-	  and additional debug information such as types and all pointer addresses
-	  used to indirect to the final value
-	* A custom Formatter interface that integrates cleanly with the standard fmt
-	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
-	  similar to the default %v while providing the additional functionality
-	  outlined above and passing unsupported format verbs such as %x and %q
-	  along to fmt
-
-Quick Start
-
-This section demonstrates how to quickly get started with spew.  See the
-sections below for further details on formatting and configuration options.
-
-To dump a variable with full newlines, indentation, type, and pointer
-information use Dump, Fdump, or Sdump:
-	spew.Dump(myVar1, myVar2, ...)
-	spew.Fdump(someWriter, myVar1, myVar2, ...)
-	str := spew.Sdump(myVar1, myVar2, ...)
-
-Alternatively, if you would prefer to use format strings with a compacted inline
-printing style, use the convenience wrappers Printf, Fprintf, etc with
-%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
-%#+v (adds types and pointer addresses):
-	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
-	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
-	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
-	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
-
-Configuration Options
-
-Configuration of spew is handled by fields in the ConfigState type.  For
-convenience, all of the top-level functions use a global state available
-via the spew.Config global.
-
-It is also possible to create a ConfigState instance that provides methods
-equivalent to the top-level functions.  This allows concurrent configuration
-options.  See the ConfigState documentation for more details.
-
-The following configuration options are available:
-	* Indent
-		String to use for each indentation level for Dump functions.
-		It is a single space by default.  A popular alternative is "\t".
-
-	* MaxDepth
-		Maximum number of levels to descend into nested data structures.
-		There is no limit by default.
-
-	* DisableMethods
-		Disables invocation of error and Stringer interface methods.
-		Method invocation is enabled by default.
-
-	* DisablePointerMethods
-		Disables invocation of error and Stringer interface methods on types
-		which only accept pointer receivers from non-pointer variables.
-		Pointer method invocation is enabled by default.
-
-	* DisablePointerAddresses
-		DisablePointerAddresses specifies whether to disable the printing of
-		pointer addresses. This is useful when diffing data structures in tests.
-
-	* DisableCapacities
-		DisableCapacities specifies whether to disable the printing of
-		capacities for arrays, slices, maps and channels. This is useful when
-		diffing data structures in tests.
-
-	* ContinueOnMethod
-		Enables recursion into types after invoking error and Stringer interface
-		methods. Recursion after method invocation is disabled by default.
-
-	* SortKeys
-		Specifies map keys should be sorted before being printed. Use
-		this to have a more deterministic, diffable output.  Note that
-		only native types (bool, int, uint, floats, uintptr and string)
-		and types which implement error or Stringer interfaces are
-		supported with other types sorted according to the
-		reflect.Value.String() output which guarantees display
-		stability.  Natural map order is used by default.
-
-	* SpewKeys
-		Specifies that, as a last resort attempt, map keys should be
-		spewed to strings and sorted by those strings.  This is only
-		considered if SortKeys is true.
-
-Dump Usage
-
-Simply call spew.Dump with a list of variables you want to dump:
-
-	spew.Dump(myVar1, myVar2, ...)
-
-You may also call spew.Fdump if you would prefer to output to an arbitrary
-io.Writer.  For example, to dump to standard error:
-
-	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
-
-A third option is to call spew.Sdump to get the formatted output as a string:
-
-	str := spew.Sdump(myVar1, myVar2, ...)
-
-Sample Dump Output
-
-See the Dump example for details on the setup of the types and variables being
-shown here.
-
-	(main.Foo) {
-	 unexportedField: (*main.Bar)(0xf84002e210)({
-	  flag: (main.Flag) flagTwo,
-	  data: (uintptr) <nil>
-	 }),
-	 ExportedField: (map[interface {}]interface {}) (len=1) {
-	  (string) (len=3) "one": (bool) true
-	 }
-	}
-
-Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
-command as shown.
-	([]uint8) (len=32 cap=32) {
-	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
-	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
-	 00000020  31 32                                             |12|
-	}
-
-Custom Formatter
-
-Spew provides a custom formatter that implements the fmt.Formatter interface
-so that it integrates cleanly with standard fmt package printing functions. The
-formatter is useful for inline printing of smaller data types similar to the
-standard %v format specifier.
-
-The custom formatter only responds to the %v (most compact), %+v (adds pointer
-addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
-combinations.  Any other verbs such as %x and %q will be sent to the the
-standard fmt package for formatting.  In addition, the custom formatter ignores
-the width and precision arguments (however they will still work on the format
-specifiers not handled by the custom formatter).
-
-Custom Formatter Usage
-
-The simplest way to make use of the spew custom formatter is to call one of the
-convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
-functions have syntax you are most likely already familiar with:
-
-	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
-	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
-	spew.Println(myVar, myVar2)
-	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
-	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
-
-See the Index for the full list convenience functions.
-
-Sample Formatter Output
-
-Double pointer to a uint8:
-	  %v: <**>5
-	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
-	 %#v: (**uint8)5
-	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
-
-Pointer to circular struct with a uint8 field and a pointer to itself:
-	  %v: <*>{1 <*><shown>}
-	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
-	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
-	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
-
-See the Printf example for details on the setup of variables being shown
-here.
-
-Errors
-
-Since it is possible for custom Stringer/error interfaces to panic, spew
-detects them and handles them internally by printing the panic information
-inline with the output.  Since spew is intended to provide deep pretty printing
-capabilities on structures, it intentionally does not return any errors.
-*/
-package spew

vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -1,509 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-package spew
-
-import (
-	"bytes"
-	"encoding/hex"
-	"fmt"
-	"io"
-	"os"
-	"reflect"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var (
-	// uint8Type is a reflect.Type representing a uint8.  It is used to
-	// convert cgo types to uint8 slices for hexdumping.
-	uint8Type = reflect.TypeOf(uint8(0))
-
-	// cCharRE is a regular expression that matches a cgo char.
-	// It is used to detect character arrays to hexdump them.
-	cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
-
-	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
-	// char.  It is used to detect unsigned character arrays to hexdump
-	// them.
-	cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
-
-	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
-	// It is used to detect uint8_t arrays to hexdump them.
-	cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
-)
-
-// dumpState contains information about the state of a dump operation.
-type dumpState struct {
-	w                io.Writer
-	depth            int
-	pointers         map[uintptr]int
-	ignoreNextType   bool
-	ignoreNextIndent bool
-	cs               *ConfigState
-}
-
-// indent performs indentation according to the depth level and cs.Indent
-// option.
-func (d *dumpState) indent() {
-	if d.ignoreNextIndent {
-		d.ignoreNextIndent = false
-		return
-	}
-	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
-}
-
-// unpackValue returns values inside of non-nil interfaces when possible.
-// This is useful for data types like structs, arrays, slices, and maps which
-// can contain varying types packed inside an interface.
-func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
-	if v.Kind() == reflect.Interface && !v.IsNil() {
-		v = v.Elem()
-	}
-	return v
-}
-
-// dumpPtr handles formatting of pointers by indirecting them as necessary.
-func (d *dumpState) dumpPtr(v reflect.Value) {
-	// Remove pointers at or below the current depth from map used to detect
-	// circular refs.
-	for k, depth := range d.pointers {
-		if depth >= d.depth {
-			delete(d.pointers, k)
-		}
-	}
-
-	// Keep list of all dereferenced pointers to show later.
-	pointerChain := make([]uintptr, 0)
-
-	// Figure out how many levels of indirection there are by dereferencing
-	// pointers and unpacking interfaces down the chain while detecting circular
-	// references.
-	nilFound := false
-	cycleFound := false
-	indirects := 0
-	ve := v
-	for ve.Kind() == reflect.Ptr {
-		if ve.IsNil() {
-			nilFound = true
-			break
-		}
-		indirects++
-		addr := ve.Pointer()
-		pointerChain = append(pointerChain, addr)
-		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
-			cycleFound = true
-			indirects--
-			break
-		}
-		d.pointers[addr] = d.depth
-
-		ve = ve.Elem()
-		if ve.Kind() == reflect.Interface {
-			if ve.IsNil() {
-				nilFound = true
-				break
-			}
-			ve = ve.Elem()
-		}
-	}
-
-	// Display type information.
-	d.w.Write(openParenBytes)
-	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
-	d.w.Write([]byte(ve.Type().String()))
-	d.w.Write(closeParenBytes)
-
-	// Display pointer information.
-	if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
-		d.w.Write(openParenBytes)
-		for i, addr := range pointerChain {
-			if i > 0 {
-				d.w.Write(pointerChainBytes)
-			}
-			printHexPtr(d.w, addr)
-		}
-		d.w.Write(closeParenBytes)
-	}
-
-	// Display dereferenced value.
-	d.w.Write(openParenBytes)
-	switch {
-	case nilFound == true:
-		d.w.Write(nilAngleBytes)
-
-	case cycleFound == true:
-		d.w.Write(circularBytes)
-
-	default:
-		d.ignoreNextType = true
-		d.dump(ve)
-	}
-	d.w.Write(closeParenBytes)
-}
-
-// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
-// reflection) arrays and slices are dumped in hexdump -C fashion.
-func (d *dumpState) dumpSlice(v reflect.Value) {
-	// Determine whether this type should be hex dumped or not.  Also,
-	// for types which should be hexdumped, try to use the underlying data
-	// first, then fall back to trying to convert them to a uint8 slice.
-	var buf []uint8
-	doConvert := false
-	doHexDump := false
-	numEntries := v.Len()
-	if numEntries > 0 {
-		vt := v.Index(0).Type()
-		vts := vt.String()
-		switch {
-		// C types that need to be converted.
-		case cCharRE.MatchString(vts):
-			fallthrough
-		case cUnsignedCharRE.MatchString(vts):
-			fallthrough
-		case cUint8tCharRE.MatchString(vts):
-			doConvert = true
-
-		// Try to use existing uint8 slices and fall back to converting
-		// and copying if that fails.
-		case vt.Kind() == reflect.Uint8:
-			// We need an addressable interface to convert the type
-			// to a byte slice.  However, the reflect package won't
-			// give us an interface on certain things like
-			// unexported struct fields in order to enforce
-			// visibility rules.  We use unsafe, when available, to
-			// bypass these restrictions since this package does not
-			// mutate the values.
-			vs := v
-			if !vs.CanInterface() || !vs.CanAddr() {
-				vs = unsafeReflectValue(vs)
-			}
-			if !UnsafeDisabled {
-				vs = vs.Slice(0, numEntries)
-
-				// Use the existing uint8 slice if it can be
-				// type asserted.
-				iface := vs.Interface()
-				if slice, ok := iface.([]uint8); ok {
-					buf = slice
-					doHexDump = true
-					break
-				}
-			}
-
-			// The underlying data needs to be converted if it can't
-			// be type asserted to a uint8 slice.
-			doConvert = true
-		}
-
-		// Copy and convert the underlying type if needed.
-		if doConvert && vt.ConvertibleTo(uint8Type) {
-			// Convert and copy each element into a uint8 byte
-			// slice.
-			buf = make([]uint8, numEntries)
-			for i := 0; i < numEntries; i++ {
-				vv := v.Index(i)
-				buf[i] = uint8(vv.Convert(uint8Type).Uint())
-			}
-			doHexDump = true
-		}
-	}
-
-	// Hexdump the entire slice as needed.
-	if doHexDump {
-		indent := strings.Repeat(d.cs.Indent, d.depth)
-		str := indent + hex.Dump(buf)
-		str = strings.Replace(str, "\n", "\n"+indent, -1)
-		str = strings.TrimRight(str, d.cs.Indent)
-		d.w.Write([]byte(str))
-		return
-	}
-
-	// Recursively call dump for each item.
-	for i := 0; i < numEntries; i++ {
-		d.dump(d.unpackValue(v.Index(i)))
-		if i < (numEntries - 1) {
-			d.w.Write(commaNewlineBytes)
-		} else {
-			d.w.Write(newlineBytes)
-		}
-	}
-}
-
-// dump is the main workhorse for dumping a value.  It uses the passed reflect
-// value to figure out what kind of object we are dealing with and formats it
-// appropriately.  It is a recursive function, however circular data structures
-// are detected and handled properly.
-func (d *dumpState) dump(v reflect.Value) {
-	// Handle invalid reflect values immediately.
-	kind := v.Kind()
-	if kind == reflect.Invalid {
-		d.w.Write(invalidAngleBytes)
-		return
-	}
-
-	// Handle pointers specially.
-	if kind == reflect.Ptr {
-		d.indent()
-		d.dumpPtr(v)
-		return
-	}
-
-	// Print type information unless already handled elsewhere.
-	if !d.ignoreNextType {
-		d.indent()
-		d.w.Write(openParenBytes)
-		d.w.Write([]byte(v.Type().String()))
-		d.w.Write(closeParenBytes)
-		d.w.Write(spaceBytes)
-	}
-	d.ignoreNextType = false
-
-	// Display length and capacity if the built-in len and cap functions
-	// work with the value's kind and the len/cap itself is non-zero.
-	valueLen, valueCap := 0, 0
-	switch v.Kind() {
-	case reflect.Array, reflect.Slice, reflect.Chan:
-		valueLen, valueCap = v.Len(), v.Cap()
-	case reflect.Map, reflect.String:
-		valueLen = v.Len()
-	}
-	if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
-		d.w.Write(openParenBytes)
-		if valueLen != 0 {
-			d.w.Write(lenEqualsBytes)
-			printInt(d.w, int64(valueLen), 10)
-		}
-		if !d.cs.DisableCapacities && valueCap != 0 {
-			if valueLen != 0 {
-				d.w.Write(spaceBytes)
-			}
-			d.w.Write(capEqualsBytes)
-			printInt(d.w, int64(valueCap), 10)
-		}
-		d.w.Write(closeParenBytes)
-		d.w.Write(spaceBytes)
-	}
-
-	// Call Stringer/error interfaces if they exist and the handle methods flag
-	// is enabled
-	if !d.cs.DisableMethods {
-		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
-			if handled := handleMethods(d.cs, d.w, v); handled {
-				return
-			}
-		}
-	}
-
-	switch kind {
-	case reflect.Invalid:
-		// Do nothing.  We should never get here since invalid has already
-		// been handled above.
-
-	case reflect.Bool:
-		printBool(d.w, v.Bool())
-
-	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
-		printInt(d.w, v.Int(), 10)
-
-	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-		printUint(d.w, v.Uint(), 10)
-
-	case reflect.Float32:
-		printFloat(d.w, v.Float(), 32)
-
-	case reflect.Float64:
-		printFloat(d.w, v.Float(), 64)
-
-	case reflect.Complex64:
-		printComplex(d.w, v.Complex(), 32)
-
-	case reflect.Complex128:
-		printComplex(d.w, v.Complex(), 64)
-
-	case reflect.Slice:
-		if v.IsNil() {
-			d.w.Write(nilAngleBytes)
-			break
-		}
-		fallthrough
-
-	case reflect.Array:
-		d.w.Write(openBraceNewlineBytes)
-		d.depth++
-		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
-			d.indent()
-			d.w.Write(maxNewlineBytes)
-		} else {
-			d.dumpSlice(v)
-		}
-		d.depth--
-		d.indent()
-		d.w.Write(closeBraceBytes)
-
-	case reflect.String:
-		d.w.Write([]byte(strconv.Quote(v.String())))
-
-	case reflect.Interface:
-		// The only time we should get here is for nil interfaces due to
-		// unpackValue calls.
-		if v.IsNil() {
-			d.w.Write(nilAngleBytes)
-		}
-
-	case reflect.Ptr:
-		// Do nothing.  We should never get here since pointers have already
-		// been handled above.
-
-	case reflect.Map:
-		// nil maps should be indicated as different than empty maps
-		if v.IsNil() {
-			d.w.Write(nilAngleBytes)
-			break
-		}
-
-		d.w.Write(openBraceNewlineBytes)
-		d.depth++
-		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
-			d.indent()
-			d.w.Write(maxNewlineBytes)
-		} else {
-			numEntries := v.Len()
-			keys := v.MapKeys()
-			if d.cs.SortKeys {
-				sortValues(keys, d.cs)
-			}
-			for i, key := range keys {
-				d.dump(d.unpackValue(key))
-				d.w.Write(colonSpaceBytes)
-				d.ignoreNextIndent = true
-				d.dump(d.unpackValue(v.MapIndex(key)))
-				if i < (numEntries - 1) {
-					d.w.Write(commaNewlineBytes)
-				} else {
-					d.w.Write(newlineBytes)
-				}
-			}
-		}
-		d.depth--
-		d.indent()
-		d.w.Write(closeBraceBytes)
-
-	case reflect.Struct:
-		d.w.Write(openBraceNewlineBytes)
-		d.depth++
-		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
-			d.indent()
-			d.w.Write(maxNewlineBytes)
-		} else {
-			vt := v.Type()
-			numFields := v.NumField()
-			for i := 0; i < numFields; i++ {
-				d.indent()
-				vtf := vt.Field(i)
-				d.w.Write([]byte(vtf.Name))
-				d.w.Write(colonSpaceBytes)
-				d.ignoreNextIndent = true
-				d.dump(d.unpackValue(v.Field(i)))
-				if i < (numFields - 1) {
-					d.w.Write(commaNewlineBytes)
-				} else {
-					d.w.Write(newlineBytes)
-				}
-			}
-		}
-		d.depth--
-		d.indent()
-		d.w.Write(closeBraceBytes)
-
-	case reflect.Uintptr:
-		printHexPtr(d.w, uintptr(v.Uint()))
-
-	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
-		printHexPtr(d.w, v.Pointer())
-
-	// There were not any other types at the time this code was written, but
-	// fall back to letting the default fmt package handle it in case any new
-	// types are added.
-	default:
-		if v.CanInterface() {
-			fmt.Fprintf(d.w, "%v", v.Interface())
-		} else {
-			fmt.Fprintf(d.w, "%v", v.String())
-		}
-	}
-}
-
-// fdump is a helper function to consolidate the logic from the various public
-// methods which take varying writers and config states.
-func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
-	for _, arg := range a {
-		if arg == nil {
-			w.Write(interfaceBytes)
-			w.Write(spaceBytes)
-			w.Write(nilAngleBytes)
-			w.Write(newlineBytes)
-			continue
-		}
-
-		d := dumpState{w: w, cs: cs}
-		d.pointers = make(map[uintptr]int)
-		d.dump(reflect.ValueOf(arg))
-		d.w.Write(newlineBytes)
-	}
-}
-
-// Fdump formats and displays the passed arguments to io.Writer w.  It formats
-// exactly the same as Dump.
-func Fdump(w io.Writer, a ...interface{}) {
-	fdump(&Config, w, a...)
-}
-
-// Sdump returns a string with the passed arguments formatted exactly the same
-// as Dump.
-func Sdump(a ...interface{}) string {
-	var buf bytes.Buffer
-	fdump(&Config, &buf, a...)
-	return buf.String()
-}
-
-/*
-Dump displays the passed parameters to standard out with newlines, customizable
-indentation, and additional debug information such as complete types and all
-pointer addresses used to indirect to the final value.  It provides the
-following features over the built-in printing facilities provided by the fmt
-package:
-
-	* Pointers are dereferenced and followed
-	* Circular data structures are detected and handled properly
-	* Custom Stringer/error interfaces are optionally invoked, including
-	  on unexported types
-	* Custom types which only implement the Stringer/error interfaces via
-	  a pointer receiver are optionally invoked when passing non-pointer
-	  variables
-	* Byte arrays and slices are dumped like the hexdump -C command which
-	  includes offsets, byte values in hex, and ASCII output
-
-The configuration options are controlled by an exported package global,
-spew.Config.  See ConfigState for options documentation.
-
-See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
-get the formatted result as a string.
-*/
-func Dump(a ...interface{}) {
-	fdump(&Config, os.Stdout, a...)
-}

vendor/github.com/davecgh/go-spew/spew/format.go

@@ -1,419 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-package spew
-
-import (
-	"bytes"
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-)
-
-// supportedFlags is a list of all the character flags supported by fmt package.
-const supportedFlags = "0-+# "
-
-// formatState implements the fmt.Formatter interface and contains information
-// about the state of a formatting operation.  The NewFormatter function can
-// be used to get a new Formatter which can be used directly as arguments
-// in standard fmt package printing calls.
-type formatState struct {
-	value          interface{}
-	fs             fmt.State
-	depth          int
-	pointers       map[uintptr]int
-	ignoreNextType bool
-	cs             *ConfigState
-}
-
-// buildDefaultFormat recreates the original format string without precision
-// and width information to pass in to fmt.Sprintf in the case of an
-// unrecognized type.  Unless new types are added to the language, this
-// function won't ever be called.
-func (f *formatState) buildDefaultFormat() (format string) {
-	buf := bytes.NewBuffer(percentBytes)
-
-	for _, flag := range supportedFlags {
-		if f.fs.Flag(int(flag)) {
-			buf.WriteRune(flag)
-		}
-	}
-
-	buf.WriteRune('v')
-
-	format = buf.String()
-	return format
-}
-
-// constructOrigFormat recreates the original format string including precision
-// and width information to pass along to the standard fmt package.  This allows
-// automatic deferral of all format strings this package doesn't support.
-func (f *formatState) constructOrigFormat(verb rune) (format string) {
-	buf := bytes.NewBuffer(percentBytes)
-
-	for _, flag := range supportedFlags {
-		if f.fs.Flag(int(flag)) {
-			buf.WriteRune(flag)
-		}
-	}
-
-	if width, ok := f.fs.Width(); ok {
-		buf.WriteString(strconv.Itoa(width))
-	}
-
-	if precision, ok := f.fs.Precision(); ok {
-		buf.Write(precisionBytes)
-		buf.WriteString(strconv.Itoa(precision))
-	}
-
-	buf.WriteRune(verb)
-
-	format = buf.String()
-	return format
-}
-
-// unpackValue returns values inside of non-nil interfaces when possible and
-// ensures that types for values which have been unpacked from an interface
-// are displayed when the show types flag is also set.
-// This is useful for data types like structs, arrays, slices, and maps which
-// can contain varying types packed inside an interface.
-func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
-	if v.Kind() == reflect.Interface {
-		f.ignoreNextType = false
-		if !v.IsNil() {
-			v = v.Elem()
-		}
-	}
-	return v
-}
-
-// formatPtr handles formatting of pointers by indirecting them as necessary.
-func (f *formatState) formatPtr(v reflect.Value) {
-	// Display nil if top level pointer is nil.
-	showTypes := f.fs.Flag('#')
-	if v.IsNil() && (!showTypes || f.ignoreNextType) {
-		f.fs.Write(nilAngleBytes)
-		return
-	}
-
-	// Remove pointers at or below the current depth from map used to detect
-	// circular refs.
-	for k, depth := range f.pointers {
-		if depth >= f.depth {
-			delete(f.pointers, k)
-		}
-	}
-
-	// Keep list of all dereferenced pointers to possibly show later.
-	pointerChain := make([]uintptr, 0)
-
-	// Figure out how many levels of indirection there are by derferencing
-	// pointers and unpacking interfaces down the chain while detecting circular
-	// references.
-	nilFound := false
-	cycleFound := false
-	indirects := 0
-	ve := v
-	for ve.Kind() == reflect.Ptr {
-		if ve.IsNil() {
-			nilFound = true
-			break
-		}
-		indirects++
-		addr := ve.Pointer()
-		pointerChain = append(pointerChain, addr)
-		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
-			cycleFound = true
-			indirects--
-			break
-		}
-		f.pointers[addr] = f.depth
-
-		ve = ve.Elem()
-		if ve.Kind() == reflect.Interface {
-			if ve.IsNil() {
-				nilFound = true
-				break
-			}
-			ve = ve.Elem()
-		}
-	}
-
-	// Display type or indirection level depending on flags.
-	if showTypes && !f.ignoreNextType {
-		f.fs.Write(openParenBytes)
-		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
-		f.fs.Write([]byte(ve.Type().String()))
-		f.fs.Write(closeParenBytes)
-	} else {
-		if nilFound || cycleFound {
-			indirects += strings.Count(ve.Type().String(), "*")
-		}
-		f.fs.Write(openAngleBytes)
-		f.fs.Write([]byte(strings.Repeat("*", indirects)))
-		f.fs.Write(closeAngleBytes)
-	}
-
-	// Display pointer information depending on flags.
-	if f.fs.Flag('+') && (len(pointerChain) > 0) {
-		f.fs.Write(openParenBytes)
-		for i, addr := range pointerChain {
-			if i > 0 {
-				f.fs.Write(pointerChainBytes)
-			}
-			printHexPtr(f.fs, addr)
-		}
-		f.fs.Write(closeParenBytes)
-	}
-
-	// Display dereferenced value.
-	switch {
-	case nilFound == true:
-		f.fs.Write(nilAngleBytes)
-
-	case cycleFound == true:
-		f.fs.Write(circularShortBytes)
-
-	default:
-		f.ignoreNextType = true
-		f.format(ve)
-	}
-}
-
-// format is the main workhorse for providing the Formatter interface.  It
-// uses the passed reflect value to figure out what kind of object we are
-// dealing with and formats it appropriately.  It is a recursive function,
-// however circular data structures are detected and handled properly.
-func (f *formatState) format(v reflect.Value) {
-	// Handle invalid reflect values immediately.
-	kind := v.Kind()
-	if kind == reflect.Invalid {
-		f.fs.Write(invalidAngleBytes)
-		return
-	}
-
-	// Handle pointers specially.
-	if kind == reflect.Ptr {
-		f.formatPtr(v)
-		return
-	}
-
-	// Print type information unless already handled elsewhere.
-	if !f.ignoreNextType && f.fs.Flag('#') {
-		f.fs.Write(openParenBytes)
-		f.fs.Write([]byte(v.Type().String()))
-		f.fs.Write(closeParenBytes)
-	}
-	f.ignoreNextType = false
-
-	// Call Stringer/error interfaces if they exist and the handle methods
-	// flag is enabled.
-	if !f.cs.DisableMethods {
-		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
-			if handled := handleMethods(f.cs, f.fs, v); handled {
-				return
-			}
-		}
-	}
-
-	switch kind {
-	case reflect.Invalid:
-		// Do nothing.  We should never get here since invalid has already
-		// been handled above.
-
-	case reflect.Bool:
-		printBool(f.fs, v.Bool())
-
-	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
-		printInt(f.fs, v.Int(), 10)
-
-	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-		printUint(f.fs, v.Uint(), 10)
-
-	case reflect.Float32:
-		printFloat(f.fs, v.Float(), 32)
-
-	case reflect.Float64:
-		printFloat(f.fs, v.Float(), 64)
-
-	case reflect.Complex64:
-		printComplex(f.fs, v.Complex(), 32)
-
-	case reflect.Complex128:
-		printComplex(f.fs, v.Complex(), 64)
-
-	case reflect.Slice:
-		if v.IsNil() {
-			f.fs.Write(nilAngleBytes)
-			break
-		}
-		fallthrough
-
-	case reflect.Array:
-		f.fs.Write(openBracketBytes)
-		f.depth++
-		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
-			f.fs.Write(maxShortBytes)
-		} else {
-			numEntries := v.Len()
-			for i := 0; i < numEntries; i++ {
-				if i > 0 {
-					f.fs.Write(spaceBytes)
-				}
-				f.ignoreNextType = true
-				f.format(f.unpackValue(v.Index(i)))
-			}
-		}
-		f.depth--
-		f.fs.Write(closeBracketBytes)
-
-	case reflect.String:
-		f.fs.Write([]byte(v.String()))
-
-	case reflect.Interface:
-		// The only time we should get here is for nil interfaces due to
-		// unpackValue calls.
-		if v.IsNil() {
-			f.fs.Write(nilAngleBytes)
-		}
-
-	case reflect.Ptr:
-		// Do nothing.  We should never get here since pointers have already
-		// been handled above.
-
-	case reflect.Map:
-		// nil maps should be indicated as different than empty maps
-		if v.IsNil() {
-			f.fs.Write(nilAngleBytes)
-			break
-		}
-
-		f.fs.Write(openMapBytes)
-		f.depth++
-		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
-			f.fs.Write(maxShortBytes)
-		} else {
-			keys := v.MapKeys()
-			if f.cs.SortKeys {
-				sortValues(keys, f.cs)
-			}
-			for i, key := range keys {
-				if i > 0 {
-					f.fs.Write(spaceBytes)
-				}
-				f.ignoreNextType = true
-				f.format(f.unpackValue(key))
-				f.fs.Write(colonBytes)
-				f.ignoreNextType = true
-				f.format(f.unpackValue(v.MapIndex(key)))
-			}
-		}
-		f.depth--
-		f.fs.Write(closeMapBytes)
-
-	case reflect.Struct:
-		numFields := v.NumField()
-		f.fs.Write(openBraceBytes)
-		f.depth++
-		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
-			f.fs.Write(maxShortBytes)
-		} else {
-			vt := v.Type()
-			for i := 0; i < numFields; i++ {
-				if i > 0 {
-					f.fs.Write(spaceBytes)
-				}
-				vtf := vt.Field(i)
-				if f.fs.Flag('+') || f.fs.Flag('#') {
-					f.fs.Write([]byte(vtf.Name))
-					f.fs.Write(colonBytes)
-				}
-				f.format(f.unpackValue(v.Field(i)))
-			}
-		}
-		f.depth--
-		f.fs.Write(closeBraceBytes)
-
-	case reflect.Uintptr:
-		printHexPtr(f.fs, uintptr(v.Uint()))
-
-	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
-		printHexPtr(f.fs, v.Pointer())
-
-	// There were not any other types at the time this code was written, but
-	// fall back to letting the default fmt package handle it if any get added.
-	default:
-		format := f.buildDefaultFormat()
-		if v.CanInterface() {
-			fmt.Fprintf(f.fs, format, v.Interface())
-		} else {
-			fmt.Fprintf(f.fs, format, v.String())
-		}
-	}
-}
-
-// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
-// details.
-func (f *formatState) Format(fs fmt.State, verb rune) {
-	f.fs = fs
-
-	// Use standard formatting for verbs that are not v.
-	if verb != 'v' {
-		format := f.constructOrigFormat(verb)
-		fmt.Fprintf(fs, format, f.value)
-		return
-	}
-
-	if f.value == nil {
-		if fs.Flag('#') {
-			fs.Write(interfaceBytes)
-		}
-		fs.Write(nilAngleBytes)
-		return
-	}
-
-	f.format(reflect.ValueOf(f.value))
-}
-
-// newFormatter is a helper function to consolidate the logic from the various
-// public methods which take varying config states.
-func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
-	fs := &formatState{value: v, cs: cs}
-	fs.pointers = make(map[uintptr]int)
-	return fs
-}
-
-/*
-NewFormatter returns a custom formatter that satisfies the fmt.Formatter
-interface.  As a result, it integrates cleanly with standard fmt package
-printing functions.  The formatter is useful for inline printing of smaller data
-types similar to the standard %v format specifier.
-
-The custom formatter only responds to the %v (most compact), %+v (adds pointer
-addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
-combinations.  Any other verbs such as %x and %q will be sent to the the
-standard fmt package for formatting.  In addition, the custom formatter ignores
-the width and precision arguments (however they will still work on the format
-specifiers not handled by the custom formatter).
-
-Typically this function shouldn't be called directly.  It is much easier to make
-use of the custom formatter by calling one of the convenience functions such as
-Printf, Println, or Fprintf.
-*/
-func NewFormatter(v interface{}) fmt.Formatter {
-	return newFormatter(&Config, v)
-}

vendor/github.com/davecgh/go-spew/spew/spew.go

@@ -1,148 +0,0 @@
-/*
- * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-package spew
-
-import (
-	"fmt"
-	"io"
-)
-
-// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the formatted string as a value that satisfies error.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
-func Errorf(format string, a ...interface{}) (err error) {
-	return fmt.Errorf(format, convertArgs(a)...)
-}
-
-// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
-func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
-	return fmt.Fprint(w, convertArgs(a)...)
-}
-
-// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
-func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
-	return fmt.Fprintf(w, format, convertArgs(a)...)
-}
-
-// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
-// passed with a default Formatter interface returned by NewFormatter.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
-func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
-	return fmt.Fprintln(w, convertArgs(a)...)
-}
-
-// Print is a wrapper for fmt.Print that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
-func Print(a ...interface{}) (n int, err error) {
-	return fmt.Print(convertArgs(a)...)
-}
-
-// Printf is a wrapper for fmt.Printf that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
-func Printf(format string, a ...interface{}) (n int, err error) {
-	return fmt.Printf(format, convertArgs(a)...)
-}
-
-// Println is a wrapper for fmt.Println that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the number of bytes written and any write error encountered.  See
-// NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
-func Println(a ...interface{}) (n int, err error) {
-	return fmt.Println(convertArgs(a)...)
-}
-
-// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
-func Sprint(a ...interface{}) string {
-	return fmt.Sprint(convertArgs(a)...)
-}
-
-// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
-// passed with a default Formatter interface returned by NewFormatter.  It
-// returns the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
-func Sprintf(format string, a ...interface{}) string {
-	return fmt.Sprintf(format, convertArgs(a)...)
-}
-
-// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
-// were passed with a default Formatter interface returned by NewFormatter.  It
-// returns the resulting string.  See NewFormatter for formatting details.
-//
-// This function is shorthand for the following syntax:
-//
-//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
-func Sprintln(a ...interface{}) string {
-	return fmt.Sprintln(convertArgs(a)...)
-}
-
-// convertArgs accepts a slice of arguments and returns a slice of the same
-// length with each argument converted to a default spew Formatter interface.
-func convertArgs(args []interface{}) (formatters []interface{}) {
-	formatters = make([]interface{}, len(args))
-	for index, arg := range args {
-		formatters[index] = NewFormatter(arg)
-	}
-	return formatters
-}

vendor/github.com/joho/godotenv/LICENCE

@@ -1,23 +0,0 @@
-Copyright (c) 2013 John Barton
-
-MIT License
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-

vendor/github.com/joho/godotenv/README.md

@@ -1,127 +0,0 @@
-# GoDotEnv [![wercker status](https://app.wercker.com/status/507594c2ec7e60f19403a568dfea0f78 "wercker status")](https://app.wercker.com/project/bykey/507594c2ec7e60f19403a568dfea0f78)
-
-A Go (golang) port of the Ruby dotenv project (which loads env vars from a .env file)
-
-From the original Library:
-
-> Storing configuration in the environment is one of the tenets of a twelve-factor app. Anything that is likely to change between deployment environments–such as resource handles for databases or credentials for external services–should be extracted from the code into environment variables.
->
-> But it is not always practical to set environment variables on development machines or continuous integration servers where multiple projects are run. Dotenv load variables from a .env file into ENV when the environment is bootstrapped.
-
-It can be used as a library (for loading in env for your own daemons etc) or as a bin command.
-
-There is test coverage and CI for both linuxish and windows environments, but I make no guarantees about the bin version working on windows.
-
-## Installation
-
-As a library
-
-```shell
-go get github.com/joho/godotenv
-```
-
-or if you want to use it as a bin command
-```shell
-go get github.com/joho/godotenv/cmd/godotenv
-```
-
-## Usage
-
-Add your application configuration to your `.env` file in the root of your project:
-
-```shell
-S3_BUCKET=YOURS3BUCKET
-SECRET_KEY=YOURSECRETKEYGOESHERE
-```
-
-Then in your Go app you can do something like
-
-```go
-package main
-
-import (
-    "github.com/joho/godotenv"
-    "log"
-    "os"
-)
-
-func main() {
-  err := godotenv.Load()
-  if err != nil {
-    log.Fatal("Error loading .env file")
-  }
-
-  s3Bucket := os.Getenv("S3_BUCKET")
-  secretKey := os.Getenv("SECRET_KEY")
-
-  // now do something with s3 or whatever
-}
-```
-
-If you're even lazier than that, you can just take advantage of the autoload package which will read in `.env` on import
-
-```go
-import _ "github.com/joho/godotenv/autoload"
-```
-
-While `.env` in the project root is the default, you don't have to be constrained, both examples below are 100% legit
-
-```go
-_ = godotenv.Load("somerandomfile")
-_ = godotenv.Load("filenumberone.env", "filenumbertwo.env")
-```
-
-If you want to be really fancy with your env file you can do comments and exports (below is a valid env file)
-
-```shell
-# I am a comment and that is OK
-SOME_VAR=someval
-FOO=BAR # comments at line end are OK too
-export BAR=BAZ
-```
-
-Or finally you can do YAML(ish) style
-
-```yaml
-FOO: bar
-BAR: baz
-```
-
-as a final aside, if you don't want godotenv munging your env you can just get a map back instead
-
-```go
-var myEnv map[string]string
-myEnv, err := godotenv.Read()
-
-s3Bucket := myEnv["S3_BUCKET"]
-```
-
-### Command Mode
-
-Assuming you've installed the command as above and you've got `$GOPATH/bin` in your `$PATH`
-
-```
-godotenv -f /some/path/to/.env some_command with some args
-```
-
-If you don't specify `-f` it will fall back on the default of loading `.env` in `PWD`
-
-## Contributing
-
-Contributions are most welcome! The parser itself is pretty stupidly naive and I wouldn't be surprised if it breaks with edge cases.
-
-*code changes without tests will not be accepted*
-
-1. Fork it
-2. Create your feature branch (`git checkout -b my-new-feature`)
-3. Commit your changes (`git commit -am 'Added some feature'`)
-4. Push to the branch (`git push origin my-new-feature`)
-5. Create new Pull Request
-
-## CI
-
-Linux: [![wercker status](https://app.wercker.com/status/507594c2ec7e60f19403a568dfea0f78/m "wercker status")](https://app.wercker.com/project/bykey/507594c2ec7e60f19403a568dfea0f78) Windows: [![Build status](https://ci.appveyor.com/api/projects/status/9v40vnfvvgde64u4)](https://ci.appveyor.com/project/joho/godotenv)
-
-## Who?
-
-The original library [dotenv](https://github.com/bkeepers/dotenv) was written by [Brandon Keepers](http://opensoul.org/), and this port was done by [John Barton](http://whoisjohnbarton.com) based off the tests/fixtures in the original library.

vendor/github.com/joho/godotenv/autoload/autoload.go

@@ -1,15 +0,0 @@
-package autoload
-
-/*
-	You can just read the .env file on import just by doing
-
-		import _ "github.com/joho/godotenv/autoload"
-
-	And bob's your mother's brother
-*/
-
-import "github.com/joho/godotenv"
-
-func init() {
-	godotenv.Load()
-}

vendor/github.com/joho/godotenv/godotenv.go

@@ -1,235 +0,0 @@
-// Package godotenv is a go port of the ruby dotenv library (https://github.com/bkeepers/dotenv)
-//
-// Examples/readme can be found on the github page at https://github.com/joho/godotenv
-//
-// The TL;DR is that you make a .env file that looks something like
-//
-// 		SOME_ENV_VAR=somevalue
-//
-// and then in your go code you can call
-//
-// 		godotenv.Load()
-//
-// and all the env vars declared in .env will be avaiable through os.Getenv("SOME_ENV_VAR")
-package godotenv
-
-import (
-	"bufio"
-	"errors"
-	"os"
-	"os/exec"
-	"strings"
-)
-
-// Load will read your env file(s) and load them into ENV for this process.
-//
-// Call this function as close as possible to the start of your program (ideally in main)
-//
-// If you call Load without any args it will default to loading .env in the current path
-//
-// You can otherwise tell it which files to load (there can be more than one) like
-//
-//		godotenv.Load("fileone", "filetwo")
-//
-// It's important to note that it WILL NOT OVERRIDE an env variable that already exists - consider the .env file to set dev vars or sensible defaults
-func Load(filenames ...string) (err error) {
-	filenames = filenamesOrDefault(filenames)
-
-	for _, filename := range filenames {
-		err = loadFile(filename, false)
-		if err != nil {
-			return // return early on a spazout
-		}
-	}
-	return
-}
-
-// Overload will read your env file(s) and load them into ENV for this process.
-//
-// Call this function as close as possible to the start of your program (ideally in main)
-//
-// If you call Overload without any args it will default to loading .env in the current path
-//
-// You can otherwise tell it which files to load (there can be more than one) like
-//
-//		godotenv.Overload("fileone", "filetwo")
-//
-// It's important to note this WILL OVERRIDE an env variable that already exists - consider the .env file to forcefilly set all vars.
-func Overload(filenames ...string) (err error) {
-	filenames = filenamesOrDefault(filenames)
-
-	for _, filename := range filenames {
-		err = loadFile(filename, true)
-		if err != nil {
-			return // return early on a spazout
-		}
-	}
-	return
-}
-
-// Read all env (with same file loading semantics as Load) but return values as
-// a map rather than automatically writing values into env
-func Read(filenames ...string) (envMap map[string]string, err error) {
-	filenames = filenamesOrDefault(filenames)
-	envMap = make(map[string]string)
-
-	for _, filename := range filenames {
-		individualEnvMap, individualErr := readFile(filename)
-
-		if individualErr != nil {
-			err = individualErr
-			return // return early on a spazout
-		}
-
-		for key, value := range individualEnvMap {
-			envMap[key] = value
-		}
-	}
-
-	return
-}
-
-// Exec loads env vars from the specified filenames (empty map falls back to default)
-// then executes the cmd specified.
-//
-// Simply hooks up os.Stdin/err/out to the command and calls Run()
-//
-// If you want more fine grained control over your command it's recommended
-// that you use `Load()` or `Read()` and the `os/exec` package yourself.
-func Exec(filenames []string, cmd string, cmdArgs []string) error {
-	Load(filenames...)
-
-	command := exec.Command(cmd, cmdArgs...)
-	command.Stdin = os.Stdin
-	command.Stdout = os.Stdout
-	command.Stderr = os.Stderr
-	return command.Run()
-}
-
-func filenamesOrDefault(filenames []string) []string {
-	if len(filenames) == 0 {
-		return []string{".env"}
-	}
-	return filenames
-}
-
-func loadFile(filename string, overload bool) error {
-	envMap, err := readFile(filename)
-	if err != nil {
-		return err
-	}
-
-	for key, value := range envMap {
-		if os.Getenv(key) == "" || overload {
-			os.Setenv(key, value)
-		}
-	}
-
-	return nil
-}
-
-func readFile(filename string) (envMap map[string]string, err error) {
-	file, err := os.Open(filename)
-	if err != nil {
-		return
-	}
-	defer file.Close()
-
-	envMap = make(map[string]string)
-
-	var lines []string
-	scanner := bufio.NewScanner(file)
-	for scanner.Scan() {
-		lines = append(lines, scanner.Text())
-	}
-
-	if err = scanner.Err(); err != nil {
-		return
-	}
-
-	for _, fullLine := range lines {
-		if !isIgnoredLine(fullLine) {
-			var key, value string
-			key, value, err = parseLine(fullLine)
-
-			if err != nil {
-				return
-			}
-			envMap[key] = value
-		}
-	}
-	return
-}
-
-func parseLine(line string) (key string, value string, err error) {
-	if len(line) == 0 {
-		err = errors.New("zero length string")
-		return
-	}
-
-	// ditch the comments (but keep quoted hashes)
-	if strings.Contains(line, "#") {
-		segmentsBetweenHashes := strings.Split(line, "#")
-		quotesAreOpen := false
-		var segmentsToKeep []string
-		for _, segment := range segmentsBetweenHashes {
-			if strings.Count(segment, "\"") == 1 || strings.Count(segment, "'") == 1 {
-				if quotesAreOpen {
-					quotesAreOpen = false
-					segmentsToKeep = append(segmentsToKeep, segment)
-				} else {
-					quotesAreOpen = true
-				}
-			}
-
-			if len(segmentsToKeep) == 0 || quotesAreOpen {
-				segmentsToKeep = append(segmentsToKeep, segment)
-			}
-		}
-
-		line = strings.Join(segmentsToKeep, "#")
-	}
-
-	// now split key from value
-	splitString := strings.SplitN(line, "=", 2)
-
-	if len(splitString) != 2 {
-		// try yaml mode!
-		splitString = strings.SplitN(line, ":", 2)
-	}
-
-	if len(splitString) != 2 {
-		err = errors.New("Can't separate key from value")
-		return
-	}
-
-	// Parse the key
-	key = splitString[0]
-	if strings.HasPrefix(key, "export") {
-		key = strings.TrimPrefix(key, "export")
-	}
-	key = strings.Trim(key, " ")
-
-	// Parse the value
-	value = splitString[1]
-	// trim
-	value = strings.Trim(value, " ")
-
-	// check if we've got quoted values
-	if strings.Count(value, "\"") == 2 || strings.Count(value, "'") == 2 {
-		// pull the quotes off the edges
-		value = strings.Trim(value, "\"'")
-
-		// expand quotes
-		value = strings.Replace(value, "\\\"", "\"", -1)
-		// expand newlines
-		value = strings.Replace(value, "\\n", "\n", -1)
-	}
-
-	return
-}
-
-func isIgnoredLine(line string) bool {
-	trimmedLine := strings.Trim(line, " \n\t")
-	return len(trimmedLine) == 0 || strings.HasPrefix(trimmedLine, "#")
-}

vendor/github.com/joho/godotenv/wercker.yml

@@ -1 +0,0 @@
-box: pjvds/golang

vendor/github.com/pmezard/go-difflib/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2013, Patrick Mezard
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-    The names of its contributors may not be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
-TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/pmezard/go-difflib/difflib/difflib.go

@@ -1,772 +0,0 @@
-// Package difflib is a partial port of Python difflib module.
-//
-// It provides tools to compare sequences of strings and generate textual diffs.
-//
-// The following class and functions have been ported:
-//
-// - SequenceMatcher
-//
-// - unified_diff
-//
-// - context_diff
-//
-// Getting unified diffs was the main goal of the port. Keep in mind this code
-// is mostly suitable to output text differences in a human friendly way, there
-// are no guarantees generated diffs are consumable by patch(1).
-package difflib
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"strings"
-)
-
-func min(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
-}
-
-func max(a, b int) int {
-	if a > b {
-		return a
-	}
-	return b
-}
-
-func calculateRatio(matches, length int) float64 {
-	if length > 0 {
-		return 2.0 * float64(matches) / float64(length)
-	}
-	return 1.0
-}
-
-type Match struct {
-	A    int
-	B    int
-	Size int
-}
-
-type OpCode struct {
-	Tag byte
-	I1  int
-	I2  int
-	J1  int
-	J2  int
-}
-
-// SequenceMatcher compares sequence of strings. The basic
-// algorithm predates, and is a little fancier than, an algorithm
-// published in the late 1980's by Ratcliff and Obershelp under the
-// hyperbolic name "gestalt pattern matching".  The basic idea is to find
-// the longest contiguous matching subsequence that contains no "junk"
-// elements (R-O doesn't address junk).  The same idea is then applied
-// recursively to the pieces of the sequences to the left and to the right
-// of the matching subsequence.  This does not yield minimal edit
-// sequences, but does tend to yield matches that "look right" to people.
-//
-// SequenceMatcher tries to compute a "human-friendly diff" between two
-// sequences.  Unlike e.g. UNIX(tm) diff, the fundamental notion is the
-// longest *contiguous* & junk-free matching subsequence.  That's what
-// catches peoples' eyes.  The Windows(tm) windiff has another interesting
-// notion, pairing up elements that appear uniquely in each sequence.
-// That, and the method here, appear to yield more intuitive difference
-// reports than does diff.  This method appears to be the least vulnerable
-// to synching up on blocks of "junk lines", though (like blank lines in
-// ordinary text files, or maybe "<P>" lines in HTML files).  That may be
-// because this is the only method of the 3 that has a *concept* of
-// "junk" <wink>.
-//
-// Timing:  Basic R-O is cubic time worst case and quadratic time expected
-// case.  SequenceMatcher is quadratic time for the worst case and has
-// expected-case behavior dependent in a complicated way on how many
-// elements the sequences have in common; best case time is linear.
-type SequenceMatcher struct {
-	a              []string
-	b              []string
-	b2j            map[string][]int
-	IsJunk         func(string) bool
-	autoJunk       bool
-	bJunk          map[string]struct{}
-	matchingBlocks []Match
-	fullBCount     map[string]int
-	bPopular       map[string]struct{}
-	opCodes        []OpCode
-}
-
-func NewMatcher(a, b []string) *SequenceMatcher {
-	m := SequenceMatcher{autoJunk: true}
-	m.SetSeqs(a, b)
-	return &m
-}
-
-func NewMatcherWithJunk(a, b []string, autoJunk bool,
-	isJunk func(string) bool) *SequenceMatcher {
-
-	m := SequenceMatcher{IsJunk: isJunk, autoJunk: autoJunk}
-	m.SetSeqs(a, b)
-	return &m
-}
-
-// Set two sequences to be compared.
-func (m *SequenceMatcher) SetSeqs(a, b []string) {
-	m.SetSeq1(a)
-	m.SetSeq2(b)
-}
-
-// Set the first sequence to be compared. The second sequence to be compared is
-// not changed.
-//
-// SequenceMatcher computes and caches detailed information about the second
-// sequence, so if you want to compare one sequence S against many sequences,
-// use .SetSeq2(s) once and call .SetSeq1(x) repeatedly for each of the other
-// sequences.
-//
-// See also SetSeqs() and SetSeq2().
-func (m *SequenceMatcher) SetSeq1(a []string) {
-	if &a == &m.a {
-		return
-	}
-	m.a = a
-	m.matchingBlocks = nil
-	m.opCodes = nil
-}
-
-// Set the second sequence to be compared. The first sequence to be compared is
-// not changed.
-func (m *SequenceMatcher) SetSeq2(b []string) {
-	if &b == &m.b {
-		return
-	}
-	m.b = b
-	m.matchingBlocks = nil
-	m.opCodes = nil
-	m.fullBCount = nil
-	m.chainB()
-}
-
-func (m *SequenceMatcher) chainB() {
-	// Populate line -> index mapping
-	b2j := map[string][]int{}
-	for i, s := range m.b {
-		indices := b2j[s]
-		indices = append(indices, i)
-		b2j[s] = indices
-	}
-
-	// Purge junk elements
-	m.bJunk = map[string]struct{}{}
-	if m.IsJunk != nil {
-		junk := m.bJunk
-		for s, _ := range b2j {
-			if m.IsJunk(s) {
-				junk[s] = struct{}{}
-			}
-		}
-		for s, _ := range junk {
-			delete(b2j, s)
-		}
-	}
-
-	// Purge remaining popular elements
-	popular := map[string]struct{}{}
-	n := len(m.b)
-	if m.autoJunk && n >= 200 {
-		ntest := n/100 + 1
-		for s, indices := range b2j {
-			if len(indices) > ntest {
-				popular[s] = struct{}{}
-			}
-		}
-		for s, _ := range popular {
-			delete(b2j, s)
-		}
-	}
-	m.bPopular = popular
-	m.b2j = b2j
-}
-
-func (m *SequenceMatcher) isBJunk(s string) bool {
-	_, ok := m.bJunk[s]
-	return ok
-}
-
-// Find longest matching block in a[alo:ahi] and b[blo:bhi].
-//
-// If IsJunk is not defined:
-//
-// Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
-//     alo <= i <= i+k <= ahi
-//     blo <= j <= j+k <= bhi
-// and for all (i',j',k') meeting those conditions,
-//     k >= k'
-//     i <= i'
-//     and if i == i', j <= j'
-//
-// In other words, of all maximal matching blocks, return one that
-// starts earliest in a, and of all those maximal matching blocks that
-// start earliest in a, return the one that starts earliest in b.
-//
-// If IsJunk is defined, first the longest matching block is
-// determined as above, but with the additional restriction that no
-// junk element appears in the block.  Then that block is extended as
-// far as possible by matching (only) junk elements on both sides.  So
-// the resulting block never matches on junk except as identical junk
-// happens to be adjacent to an "interesting" match.
-//
-// If no blocks match, return (alo, blo, 0).
-func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
-	// CAUTION:  stripping common prefix or suffix would be incorrect.
-	// E.g.,
-	//    ab
-	//    acab
-	// Longest matching block is "ab", but if common prefix is
-	// stripped, it's "a" (tied with "b").  UNIX(tm) diff does so
-	// strip, so ends up claiming that ab is changed to acab by
-	// inserting "ca" in the middle.  That's minimal but unintuitive:
-	// "it's obvious" that someone inserted "ac" at the front.
-	// Windiff ends up at the same place as diff, but by pairing up
-	// the unique 'b's and then matching the first two 'a's.
-	besti, bestj, bestsize := alo, blo, 0
-
-	// find longest junk-free match
-	// during an iteration of the loop, j2len[j] = length of longest
-	// junk-free match ending with a[i-1] and b[j]
-	j2len := map[int]int{}
-	for i := alo; i != ahi; i++ {
-		// look at all instances of a[i] in b; note that because
-		// b2j has no junk keys, the loop is skipped if a[i] is junk
-		newj2len := map[int]int{}
-		for _, j := range m.b2j[m.a[i]] {
-			// a[i] matches b[j]
-			if j < blo {
-				continue
-			}
-			if j >= bhi {
-				break
-			}
-			k := j2len[j-1] + 1
-			newj2len[j] = k
-			if k > bestsize {
-				besti, bestj, bestsize = i-k+1, j-k+1, k
-			}
-		}
-		j2len = newj2len
-	}
-
-	// Extend the best by non-junk elements on each end.  In particular,
-	// "popular" non-junk elements aren't in b2j, which greatly speeds
-	// the inner loop above, but also means "the best" match so far
-	// doesn't contain any junk *or* popular non-junk elements.
-	for besti > alo && bestj > blo && !m.isBJunk(m.b[bestj-1]) &&
-		m.a[besti-1] == m.b[bestj-1] {
-		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
-	}
-	for besti+bestsize < ahi && bestj+bestsize < bhi &&
-		!m.isBJunk(m.b[bestj+bestsize]) &&
-		m.a[besti+bestsize] == m.b[bestj+bestsize] {
-		bestsize += 1
-	}
-
-	// Now that we have a wholly interesting match (albeit possibly
-	// empty!), we may as well suck up the matching junk on each
-	// side of it too.  Can't think of a good reason not to, and it
-	// saves post-processing the (possibly considerable) expense of
-	// figuring out what to do with it.  In the case of an empty
-	// interesting match, this is clearly the right thing to do,
-	// because no other kind of match is possible in the regions.
-	for besti > alo && bestj > blo && m.isBJunk(m.b[bestj-1]) &&
-		m.a[besti-1] == m.b[bestj-1] {
-		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
-	}
-	for besti+bestsize < ahi && bestj+bestsize < bhi &&
-		m.isBJunk(m.b[bestj+bestsize]) &&
-		m.a[besti+bestsize] == m.b[bestj+bestsize] {
-		bestsize += 1
-	}
-
-	return Match{A: besti, B: bestj, Size: bestsize}
-}
-
-// Return list of triples describing matching subsequences.
-//
-// Each triple is of the form (i, j, n), and means that
-// a[i:i+n] == b[j:j+n].  The triples are monotonically increasing in
-// i and in j. It's also guaranteed that if (i, j, n) and (i', j', n') are
-// adjacent triples in the list, and the second is not the last triple in the
-// list, then i+n != i' or j+n != j'. IOW, adjacent triples never describe
-// adjacent equal blocks.
-//
-// The last triple is a dummy, (len(a), len(b), 0), and is the only
-// triple with n==0.
-func (m *SequenceMatcher) GetMatchingBlocks() []Match {
-	if m.matchingBlocks != nil {
-		return m.matchingBlocks
-	}
-
-	var matchBlocks func(alo, ahi, blo, bhi int, matched []Match) []Match
-	matchBlocks = func(alo, ahi, blo, bhi int, matched []Match) []Match {
-		match := m.findLongestMatch(alo, ahi, blo, bhi)
-		i, j, k := match.A, match.B, match.Size
-		if match.Size > 0 {
-			if alo < i && blo < j {
-				matched = matchBlocks(alo, i, blo, j, matched)
-			}
-			matched = append(matched, match)
-			if i+k < ahi && j+k < bhi {
-				matched = matchBlocks(i+k, ahi, j+k, bhi, matched)
-			}
-		}
-		return matched
-	}
-	matched := matchBlocks(0, len(m.a), 0, len(m.b), nil)
-
-	// It's possible that we have adjacent equal blocks in the
-	// matching_blocks list now.
-	nonAdjacent := []Match{}
-	i1, j1, k1 := 0, 0, 0
-	for _, b := range matched {
-		// Is this block adjacent to i1, j1, k1?
-		i2, j2, k2 := b.A, b.B, b.Size
-		if i1+k1 == i2 && j1+k1 == j2 {
-			// Yes, so collapse them -- this just increases the length of
-			// the first block by the length of the second, and the first
-			// block so lengthened remains the block to compare against.
-			k1 += k2
-		} else {
-			// Not adjacent.  Remember the first block (k1==0 means it's
-			// the dummy we started with), and make the second block the
-			// new block to compare against.
-			if k1 > 0 {
-				nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
-			}
-			i1, j1, k1 = i2, j2, k2
-		}
-	}
-	if k1 > 0 {
-		nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
-	}
-
-	nonAdjacent = append(nonAdjacent, Match{len(m.a), len(m.b), 0})
-	m.matchingBlocks = nonAdjacent
-	return m.matchingBlocks
-}
-
-// Return list of 5-tuples describing how to turn a into b.
-//
-// Each tuple is of the form (tag, i1, i2, j1, j2).  The first tuple
-// has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
-// tuple preceding it, and likewise for j1 == the previous j2.
-//
-// The tags are characters, with these meanings:
-//
-// 'r' (replace):  a[i1:i2] should be replaced by b[j1:j2]
-//
-// 'd' (delete):   a[i1:i2] should be deleted, j1==j2 in this case.
-//
-// 'i' (insert):   b[j1:j2] should be inserted at a[i1:i1], i1==i2 in this case.
-//
-// 'e' (equal):    a[i1:i2] == b[j1:j2]
-func (m *SequenceMatcher) GetOpCodes() []OpCode {
-	if m.opCodes != nil {
-		return m.opCodes
-	}
-	i, j := 0, 0
-	matching := m.GetMatchingBlocks()
-	opCodes := make([]OpCode, 0, len(matching))
-	for _, m := range matching {
-		//  invariant:  we've pumped out correct diffs to change
-		//  a[:i] into b[:j], and the next matching block is
-		//  a[ai:ai+size] == b[bj:bj+size]. So we need to pump
-		//  out a diff to change a[i:ai] into b[j:bj], pump out
-		//  the matching block, and move (i,j) beyond the match
-		ai, bj, size := m.A, m.B, m.Size
-		tag := byte(0)
-		if i < ai && j < bj {
-			tag = 'r'
-		} else if i < ai {
-			tag = 'd'
-		} else if j < bj {
-			tag = 'i'
-		}
-		if tag > 0 {
-			opCodes = append(opCodes, OpCode{tag, i, ai, j, bj})
-		}
-		i, j = ai+size, bj+size
-		// the list of matching blocks is terminated by a
-		// sentinel with size 0
-		if size > 0 {
-			opCodes = append(opCodes, OpCode{'e', ai, i, bj, j})
-		}
-	}
-	m.opCodes = opCodes
-	return m.opCodes
-}
-
-// Isolate change clusters by eliminating ranges with no changes.
-//
-// Return a generator of groups with up to n lines of context.
-// Each group is in the same format as returned by GetOpCodes().
-func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
-	if n < 0 {
-		n = 3
-	}
-	codes := m.GetOpCodes()
-	if len(codes) == 0 {
-		codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
-	}
-	// Fixup leading and trailing groups if they show no changes.
-	if codes[0].Tag == 'e' {
-		c := codes[0]
-		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
-		codes[0] = OpCode{c.Tag, max(i1, i2-n), i2, max(j1, j2-n), j2}
-	}
-	if codes[len(codes)-1].Tag == 'e' {
-		c := codes[len(codes)-1]
-		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
-		codes[len(codes)-1] = OpCode{c.Tag, i1, min(i2, i1+n), j1, min(j2, j1+n)}
-	}
-	nn := n + n
-	groups := [][]OpCode{}
-	group := []OpCode{}
-	for _, c := range codes {
-		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
-		// End the current group and start a new one whenever
-		// there is a large range with no changes.
-		if c.Tag == 'e' && i2-i1 > nn {
-			group = append(group, OpCode{c.Tag, i1, min(i2, i1+n),
-				j1, min(j2, j1+n)})
-			groups = append(groups, group)
-			group = []OpCode{}
-			i1, j1 = max(i1, i2-n), max(j1, j2-n)
-		}
-		group = append(group, OpCode{c.Tag, i1, i2, j1, j2})
-	}
-	if len(group) > 0 && !(len(group) == 1 && group[0].Tag == 'e') {
-		groups = append(groups, group)
-	}
-	return groups
-}
-
-// Return a measure of the sequences' similarity (float in [0,1]).
-//
-// Where T is the total number of elements in both sequences, and
-// M is the number of matches, this is 2.0*M / T.
-// Note that this is 1 if the sequences are identical, and 0 if
-// they have nothing in common.
-//
-// .Ratio() is expensive to compute if you haven't already computed
-// .GetMatchingBlocks() or .GetOpCodes(), in which case you may
-// want to try .QuickRatio() or .RealQuickRation() first to get an
-// upper bound.
-func (m *SequenceMatcher) Ratio() float64 {
-	matches := 0
-	for _, m := range m.GetMatchingBlocks() {
-		matches += m.Size
-	}
-	return calculateRatio(matches, len(m.a)+len(m.b))
-}
-
-// Return an upper bound on ratio() relatively quickly.
-//
-// This isn't defined beyond that it is an upper bound on .Ratio(), and
-// is faster to compute.
-func (m *SequenceMatcher) QuickRatio() float64 {
-	// viewing a and b as multisets, set matches to the cardinality
-	// of their intersection; this counts the number of matches
-	// without regard to order, so is clearly an upper bound
-	if m.fullBCount == nil {
-		m.fullBCount = map[string]int{}
-		for _, s := range m.b {
-			m.fullBCount[s] = m.fullBCount[s] + 1
-		}
-	}
-
-	// avail[x] is the number of times x appears in 'b' less the
-	// number of times we've seen it in 'a' so far ... kinda
-	avail := map[string]int{}
-	matches := 0
-	for _, s := range m.a {
-		n, ok := avail[s]
-		if !ok {
-			n = m.fullBCount[s]
-		}
-		avail[s] = n - 1
-		if n > 0 {
-			matches += 1
-		}
-	}
-	return calculateRatio(matches, len(m.a)+len(m.b))
-}
-
-// Return an upper bound on ratio() very quickly.
-//
-// This isn't defined beyond that it is an upper bound on .Ratio(), and
-// is faster to compute than either .Ratio() or .QuickRatio().
-func (m *SequenceMatcher) RealQuickRatio() float64 {
-	la, lb := len(m.a), len(m.b)
-	return calculateRatio(min(la, lb), la+lb)
-}
-
-// Convert range to the "ed" format
-func formatRangeUnified(start, stop int) string {
-	// Per the diff spec at http://www.unix.org/single_unix_specification/
-	beginning := start + 1 // lines start numbering with one
-	length := stop - start
-	if length == 1 {
-		return fmt.Sprintf("%d", beginning)
-	}
-	if length == 0 {
-		beginning -= 1 // empty ranges begin at line just before the range
-	}
-	return fmt.Sprintf("%d,%d", beginning, length)
-}
-
-// Unified diff parameters
-type UnifiedDiff struct {
-	A        []string // First sequence lines
-	FromFile string   // First file name
-	FromDate string   // First file time
-	B        []string // Second sequence lines
-	ToFile   string   // Second file name
-	ToDate   string   // Second file time
-	Eol      string   // Headers end of line, defaults to LF
-	Context  int      // Number of context lines
-}
-
-// Compare two sequences of lines; generate the delta as a unified diff.
-//
-// Unified diffs are a compact way of showing line changes and a few
-// lines of context.  The number of context lines is set by 'n' which
-// defaults to three.
-//
-// By default, the diff control lines (those with ---, +++, or @@) are
-// created with a trailing newline.  This is helpful so that inputs
-// created from file.readlines() result in diffs that are suitable for
-// file.writelines() since both the inputs and outputs have trailing
-// newlines.
-//
-// For inputs that do not have trailing newlines, set the lineterm
-// argument to "" so that the output will be uniformly newline free.
-//
-// The unidiff format normally has a header for filenames and modification
-// times.  Any or all of these may be specified using strings for
-// 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
-// The modification times are normally expressed in the ISO 8601 format.
-func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
-	buf := bufio.NewWriter(writer)
-	defer buf.Flush()
-	wf := func(format string, args ...interface{}) error {
-		_, err := buf.WriteString(fmt.Sprintf(format, args...))
-		return err
-	}
-	ws := func(s string) error {
-		_, err := buf.WriteString(s)
-		return err
-	}
-
-	if len(diff.Eol) == 0 {
-		diff.Eol = "\n"
-	}
-
-	started := false
-	m := NewMatcher(diff.A, diff.B)
-	for _, g := range m.GetGroupedOpCodes(diff.Context) {
-		if !started {
-			started = true
-			fromDate := ""
-			if len(diff.FromDate) > 0 {
-				fromDate = "\t" + diff.FromDate
-			}
-			toDate := ""
-			if len(diff.ToDate) > 0 {
-				toDate = "\t" + diff.ToDate
-			}
-			if diff.FromFile != "" || diff.ToFile != "" {
-				err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
-				if err != nil {
-					return err
-				}
-				err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
-				if err != nil {
-					return err
-				}
-			}
-		}
-		first, last := g[0], g[len(g)-1]
-		range1 := formatRangeUnified(first.I1, last.I2)
-		range2 := formatRangeUnified(first.J1, last.J2)
-		if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
-			return err
-		}
-		for _, c := range g {
-			i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
-			if c.Tag == 'e' {
-				for _, line := range diff.A[i1:i2] {
-					if err := ws(" " + line); err != nil {
-						return err
-					}
-				}
-				continue
-			}
-			if c.Tag == 'r' || c.Tag == 'd' {
-				for _, line := range diff.A[i1:i2] {
-					if err := ws("-" + line); err != nil {
-						return err
-					}
-				}
-			}
-			if c.Tag == 'r' || c.Tag == 'i' {
-				for _, line := range diff.B[j1:j2] {
-					if err := ws("+" + line); err != nil {
-						return err
-					}
-				}
-			}
-		}
-	}
-	return nil
-}
-
-// Like WriteUnifiedDiff but returns the diff a string.
-func GetUnifiedDiffString(diff UnifiedDiff) (string, error) {
-	w := &bytes.Buffer{}
-	err := WriteUnifiedDiff(w, diff)
-	return string(w.Bytes()), err
-}
-
-// Convert range to the "ed" format.
-func formatRangeContext(start, stop int) string {
-	// Per the diff spec at http://www.unix.org/single_unix_specification/
-	beginning := start + 1 // lines start numbering with one
-	length := stop - start
-	if length == 0 {
-		beginning -= 1 // empty ranges begin at line just before the range
-	}
-	if length <= 1 {
-		return fmt.Sprintf("%d", beginning)
-	}
-	return fmt.Sprintf("%d,%d", beginning, beginning+length-1)
-}
-
-type ContextDiff UnifiedDiff
-
-// Compare two sequences of lines; generate the delta as a context diff.
-//
-// Context diffs are a compact way of showing line changes and a few
-// lines of context. The number of context lines is set by diff.Context
-// which defaults to three.
-//
-// By default, the diff control lines (those with *** or ---) are
-// created with a trailing newline.
-//
-// For inputs that do not have trailing newlines, set the diff.Eol
-// argument to "" so that the output will be uniformly newline free.
-//
-// The context diff format normally has a header for filenames and
-// modification times.  Any or all of these may be specified using
-// strings for diff.FromFile, diff.ToFile, diff.FromDate, diff.ToDate.
-// The modification times are normally expressed in the ISO 8601 format.
-// If not specified, the strings default to blanks.
-func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
-	buf := bufio.NewWriter(writer)
-	defer buf.Flush()
-	var diffErr error
-	wf := func(format string, args ...interface{}) {
-		_, err := buf.WriteString(fmt.Sprintf(format, args...))
-		if diffErr == nil && err != nil {
-			diffErr = err
-		}
-	}
-	ws := func(s string) {
-		_, err := buf.WriteString(s)
-		if diffErr == nil && err != nil {
-			diffErr = err
-		}
-	}
-
-	if len(diff.Eol) == 0 {
-		diff.Eol = "\n"
-	}
-
-	prefix := map[byte]string{
-		'i': "+ ",
-		'd': "- ",
-		'r': "! ",
-		'e': "  ",
-	}
-
-	started := false
-	m := NewMatcher(diff.A, diff.B)
-	for _, g := range m.GetGroupedOpCodes(diff.Context) {
-		if !started {
-			started = true
-			fromDate := ""
-			if len(diff.FromDate) > 0 {
-				fromDate = "\t" + diff.FromDate
-			}
-			toDate := ""
-			if len(diff.ToDate) > 0 {
-				toDate = "\t" + diff.ToDate
-			}
-			if diff.FromFile != "" || diff.ToFile != "" {
-				wf("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
-				wf("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
-			}
-		}
-
-		first, last := g[0], g[len(g)-1]
-		ws("***************" + diff.Eol)
-
-		range1 := formatRangeContext(first.I1, last.I2)
-		wf("*** %s ****%s", range1, diff.Eol)
-		for _, c := range g {
-			if c.Tag == 'r' || c.Tag == 'd' {
-				for _, cc := range g {
-					if cc.Tag == 'i' {
-						continue
-					}
-					for _, line := range diff.A[cc.I1:cc.I2] {
-						ws(prefix[cc.Tag] + line)
-					}
-				}
-				break
-			}
-		}
-
-		range2 := formatRangeContext(first.J1, last.J2)
-		wf("--- %s ----%s", range2, diff.Eol)
-		for _, c := range g {
-			if c.Tag == 'r' || c.Tag == 'i' {
-				for _, cc := range g {
-					if cc.Tag == 'd' {
-						continue
-					}
-					for _, line := range diff.B[cc.J1:cc.J2] {
-						ws(prefix[cc.Tag] + line)
-					}
-				}
-				break
-			}
-		}
-	}
-	return diffErr
-}
-
-// Like WriteContextDiff but returns the diff a string.
-func GetContextDiffString(diff ContextDiff) (string, error) {
-	w := &bytes.Buffer{}
-	err := WriteContextDiff(w, diff)
-	return string(w.Bytes()), err
-}
-
-// Split a string on "\n" while preserving them. The output can be used
-// as input for UnifiedDiff and ContextDiff structures.
-func SplitLines(s string) []string {
-	lines := strings.SplitAfter(s, "\n")
-	lines[len(lines)-1] += "\n"
-	return lines
-}

vendor/github.com/stretchr/testify/LICENSE

@@ -1,22 +0,0 @@
-Copyright (c) 2012 - 2013 Mat Ryer and Tyler Bunnell
-
-Please consider promoting this project if you find it useful.
-
-Permission is hereby granted, free of charge, to any person 
-obtaining a copy of this software and associated documentation 
-files (the "Software"), to deal in the Software without restriction, 
-including without limitation the rights to use, copy, modify, merge, 
-publish, distribute, sublicense, and/or sell copies of the Software, 
-and to permit persons to whom the Software is furnished to do so, 
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
-DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT 
-OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
-OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/stretchr/testify/assert/assertion_forward.go

@@ -1,352 +0,0 @@
-/*
-* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
-* THIS FILE MUST NOT BE EDITED BY HAND
- */
-
-package assert
-
-import (
-	http "net/http"
-	url "net/url"
-	time "time"
-)
-
-// Condition uses a Comparison to assert a complex condition.
-func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool {
-	return Condition(a.t, comp, msgAndArgs...)
-}
-
-// Contains asserts that the specified string, list(array, slice...) or map contains the
-// specified substring or element.
-//
-//    a.Contains("Hello World", "World", "But 'Hello World' does contain 'World'")
-//    a.Contains(["Hello", "World"], "World", "But ["Hello", "World"] does contain 'World'")
-//    a.Contains({"Hello": "World"}, "Hello", "But {'Hello': 'World'} does contain 'Hello'")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
-	return Contains(a.t, s, contains, msgAndArgs...)
-}
-
-// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
-// a slice or a channel with len == 0.
-//
-//  a.Empty(obj)
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
-	return Empty(a.t, object, msgAndArgs...)
-}
-
-// Equal asserts that two objects are equal.
-//
-//    a.Equal(123, 123, "123 and 123 should be equal")
-//
-// Returns whether the assertion was successful (true) or not (false).
-//
-// Pointer variable equality is determined based on the equality of the
-// referenced values (as opposed to the memory addresses).
-func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	return Equal(a.t, expected, actual, msgAndArgs...)
-}
-
-// EqualError asserts that a function returned an error (i.e. not `nil`)
-// and that it is equal to the provided error.
-//
-//   actualObj, err := SomeFunction()
-//   a.EqualError(err,  expectedErrorString, "An error was expected")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool {
-	return EqualError(a.t, theError, errString, msgAndArgs...)
-}
-
-// EqualValues asserts that two objects are equal or convertable to the same types
-// and equal.
-//
-//    a.EqualValues(uint32(123), int32(123), "123 and 123 should be equal")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	return EqualValues(a.t, expected, actual, msgAndArgs...)
-}
-
-// Error asserts that a function returned an error (i.e. not `nil`).
-//
-//   actualObj, err := SomeFunction()
-//   if a.Error(err, "An error was expected") {
-// 	   assert.Equal(t, err, expectedError)
-//   }
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
-	return Error(a.t, err, msgAndArgs...)
-}
-
-// Exactly asserts that two objects are equal is value and type.
-//
-//    a.Exactly(int32(123), int64(123), "123 and 123 should NOT be equal")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	return Exactly(a.t, expected, actual, msgAndArgs...)
-}
-
-// Fail reports a failure through
-func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool {
-	return Fail(a.t, failureMessage, msgAndArgs...)
-}
-
-// FailNow fails test
-func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool {
-	return FailNow(a.t, failureMessage, msgAndArgs...)
-}
-
-// False asserts that the specified value is false.
-//
-//    a.False(myBool, "myBool should be false")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
-	return False(a.t, value, msgAndArgs...)
-}
-
-// HTTPBodyContains asserts that a specified handler returns a
-// body that contains a string.
-//
-//  a.HTTPBodyContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) bool {
-	return HTTPBodyContains(a.t, handler, method, url, values, str)
-}
-
-// HTTPBodyNotContains asserts that a specified handler returns a
-// body that does not contain a string.
-//
-//  a.HTTPBodyNotContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) bool {
-	return HTTPBodyNotContains(a.t, handler, method, url, values, str)
-}
-
-// HTTPError asserts that a specified handler returns an error status code.
-//
-//  a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values) bool {
-	return HTTPError(a.t, handler, method, url, values)
-}
-
-// HTTPRedirect asserts that a specified handler returns a redirect status code.
-//
-//  a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values) bool {
-	return HTTPRedirect(a.t, handler, method, url, values)
-}
-
-// HTTPSuccess asserts that a specified handler returns a success status code.
-//
-//  a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values) bool {
-	return HTTPSuccess(a.t, handler, method, url, values)
-}
-
-// Implements asserts that an object is implemented by the specified interface.
-//
-//    a.Implements((*MyInterface)(nil), new(MyObject), "MyObject")
-func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
-	return Implements(a.t, interfaceObject, object, msgAndArgs...)
-}
-
-// InDelta asserts that the two numerals are within delta of each other.
-//
-// 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
-	return InDelta(a.t, expected, actual, delta, msgAndArgs...)
-}
-
-// InDeltaSlice is the same as InDelta, except it compares two slices.
-func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
-	return InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
-}
-
-// InEpsilon asserts that expected and actual have a relative error less than epsilon
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
-	return InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
-}
-
-// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
-func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
-	return InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
-}
-
-// IsType asserts that the specified objects are of the same type.
-func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
-	return IsType(a.t, expectedType, object, msgAndArgs...)
-}
-
-// JSONEq asserts that two JSON strings are equivalent.
-//
-//  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool {
-	return JSONEq(a.t, expected, actual, msgAndArgs...)
-}
-
-// Len asserts that the specified object has specific length.
-// Len also fails if the object has a type that len() not accept.
-//
-//    a.Len(mySlice, 3, "The size of slice is not 3")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool {
-	return Len(a.t, object, length, msgAndArgs...)
-}
-
-// Nil asserts that the specified object is nil.
-//
-//    a.Nil(err, "err should be nothing")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
-	return Nil(a.t, object, msgAndArgs...)
-}
-
-// NoError asserts that a function returned no error (i.e. `nil`).
-//
-//   actualObj, err := SomeFunction()
-//   if a.NoError(err) {
-// 	   assert.Equal(t, actualObj, expectedObj)
-//   }
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
-	return NoError(a.t, err, msgAndArgs...)
-}
-
-// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
-// specified substring or element.
-//
-//    a.NotContains("Hello World", "Earth", "But 'Hello World' does NOT contain 'Earth'")
-//    a.NotContains(["Hello", "World"], "Earth", "But ['Hello', 'World'] does NOT contain 'Earth'")
-//    a.NotContains({"Hello": "World"}, "Earth", "But {'Hello': 'World'} does NOT contain 'Earth'")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
-	return NotContains(a.t, s, contains, msgAndArgs...)
-}
-
-// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
-// a slice or a channel with len == 0.
-//
-//  if a.NotEmpty(obj) {
-//    assert.Equal(t, "two", obj[1])
-//  }
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool {
-	return NotEmpty(a.t, object, msgAndArgs...)
-}
-
-// NotEqual asserts that the specified values are NOT equal.
-//
-//    a.NotEqual(obj1, obj2, "two objects shouldn't be equal")
-//
-// Returns whether the assertion was successful (true) or not (false).
-//
-// Pointer variable equality is determined based on the equality of the
-// referenced values (as opposed to the memory addresses).
-func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	return NotEqual(a.t, expected, actual, msgAndArgs...)
-}
-
-// NotNil asserts that the specified object is not nil.
-//
-//    a.NotNil(err, "err should be something")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool {
-	return NotNil(a.t, object, msgAndArgs...)
-}
-
-// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
-//
-//   a.NotPanics(func(){
-//     RemainCalm()
-//   }, "Calling RemainCalm() should NOT panic")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
-	return NotPanics(a.t, f, msgAndArgs...)
-}
-
-// NotRegexp asserts that a specified regexp does not match a string.
-//
-//  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
-//  a.NotRegexp("^start", "it's not starting")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
-	return NotRegexp(a.t, rx, str, msgAndArgs...)
-}
-
-// NotZero asserts that i is not the zero value for its type and returns the truth.
-func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool {
-	return NotZero(a.t, i, msgAndArgs...)
-}
-
-// Panics asserts that the code inside the specified PanicTestFunc panics.
-//
-//   a.Panics(func(){
-//     GoCrazy()
-//   }, "Calling GoCrazy() should panic")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
-	return Panics(a.t, f, msgAndArgs...)
-}
-
-// Regexp asserts that a specified regexp matches a string.
-//
-//  a.Regexp(regexp.MustCompile("start"), "it's starting")
-//  a.Regexp("start...$", "it's not starting")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
-	return Regexp(a.t, rx, str, msgAndArgs...)
-}
-
-// True asserts that the specified value is true.
-//
-//    a.True(myBool, "myBool should be true")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
-	return True(a.t, value, msgAndArgs...)
-}
-
-// WithinDuration asserts that the two times are within duration delta of each other.
-//
-//   a.WithinDuration(time.Now(), time.Now(), 10*time.Second, "The difference should not be more than 10s")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
-	return WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
-}
-
-// Zero asserts that i is the zero value for its type and returns the truth.
-func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool {
-	return Zero(a.t, i, msgAndArgs...)
-}

vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl

@@ -1,4 +0,0 @@
-{{.CommentWithoutT "a"}}
-func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) bool {
-	return {{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
-}

vendor/github.com/stretchr/testify/assert/doc.go

@@ -1,45 +0,0 @@
-// Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
-//
-// Example Usage
-//
-// The following is a complete example using assert in a standard test function:
-//    import (
-//      "testing"
-//      "github.com/stretchr/testify/assert"
-//    )
-//
-//    func TestSomething(t *testing.T) {
-//
-//      var a string = "Hello"
-//      var b string = "Hello"
-//
-//      assert.Equal(t, a, b, "The two words should be the same.")
-//
-//    }
-//
-// if you assert many times, use the format below:
-//
-//    import (
-//      "testing"
-//      "github.com/stretchr/testify/assert"
-//    )
-//
-//    func TestSomething(t *testing.T) {
-//      assert := assert.New(t)
-//
-//      var a string = "Hello"
-//      var b string = "Hello"
-//
-//      assert.Equal(a, b, "The two words should be the same.")
-//    }
-//
-// Assertions
-//
-// Assertions allow you to easily write test code, and are global funcs in the `assert` package.
-// All assertion functions take, as the first argument, the `*testing.T` object provided by the
-// testing framework. This allows the assertion funcs to write the failings and other details to
-// the correct place.
-//
-// Every assertion function also takes an optional string message as the final argument,
-// allowing custom error messages to be appended to the message the assertion method outputs.
-package assert

vendor/github.com/stretchr/testify/assert/errors.go

@@ -1,10 +0,0 @@
-package assert
-
-import (
-	"errors"
-)
-
-// AnError is an error instance useful for testing.  If the code does not care
-// about error specifics, and only needs to return the error for example, this
-// error should be used to make the test code more readable.
-var AnError = errors.New("assert.AnError general error for testing")

vendor/github.com/stretchr/testify/assert/forward_assertions.go

@@ -1,16 +0,0 @@
-package assert
-
-// Assertions provides assertion methods around the
-// TestingT interface.
-type Assertions struct {
-	t TestingT
-}
-
-// New makes a new Assertions object for the specified TestingT.
-func New(t TestingT) *Assertions {
-	return &Assertions{
-		t: t,
-	}
-}
-
-//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_forward.go.tmpl

vendor/github.com/stretchr/testify/assert/http_assertions.go

@@ -1,106 +0,0 @@
-package assert
-
-import (
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"net/url"
-	"strings"
-)
-
-// httpCode is a helper that returns HTTP code of the response. It returns -1
-// if building a new request fails.
-func httpCode(handler http.HandlerFunc, method, url string, values url.Values) int {
-	w := httptest.NewRecorder()
-	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
-	if err != nil {
-		return -1
-	}
-	handler(w, req)
-	return w.Code
-}
-
-// HTTPSuccess asserts that a specified handler returns a success status code.
-//
-//  assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
-//
-// Returns whether the assertion was successful (true) or not (false).
-func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
-	code := httpCode(handler, method, url, values)
-	if code == -1 {
-		return false
-	}
-	return code >= http.StatusOK && code <= http.StatusPartialContent
-}
-
-// HTTPRedirect asserts that a specified handler returns a redirect status code.
-//
-//  assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
-//
-// Returns whether the assertion was successful (true) or not (false).
-func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
-	code := httpCode(handler, method, url, values)
-	if code == -1 {
-		return false
-	}
-	return code >= http.StatusMultipleChoices && code <= http.StatusTemporaryRedirect
-}
-
-// HTTPError asserts that a specified handler returns an error status code.
-//
-//  assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
-//
-// Returns whether the assertion was successful (true) or not (false).
-func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
-	code := httpCode(handler, method, url, values)
-	if code == -1 {
-		return false
-	}
-	return code >= http.StatusBadRequest
-}
-
-// HTTPBody is a helper that returns HTTP body of the response. It returns
-// empty string if building a new request fails.
-func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string {
-	w := httptest.NewRecorder()
-	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
-	if err != nil {
-		return ""
-	}
-	handler(w, req)
-	return w.Body.String()
-}
-
-// HTTPBodyContains asserts that a specified handler returns a
-// body that contains a string.
-//
-//  assert.HTTPBodyContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}) bool {
-	body := HTTPBody(handler, method, url, values)
-
-	contains := strings.Contains(body, fmt.Sprint(str))
-	if !contains {
-		Fail(t, fmt.Sprintf("Expected response body for \"%s\" to contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
-	}
-
-	return contains
-}
-
-// HTTPBodyNotContains asserts that a specified handler returns a
-// body that does not contain a string.
-//
-//  assert.HTTPBodyNotContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
-//
-// Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}) bool {
-	body := HTTPBody(handler, method, url, values)
-
-	contains := strings.Contains(body, fmt.Sprint(str))
-	if contains {
-		Fail(t, fmt.Sprintf("Expected response body for \"%s\" to NOT contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
-	}
-
-	return !contains
-}

vendor/github.com/urfave/cli/CHANGELOG.md

@@ -1,392 +0,0 @@
-# Change Log
-
-**ATTN**: This project uses [semantic versioning](http://semver.org/).
-
-## [Unreleased]
-
-## [1.19.1] - 2016-11-21
-
-### Fixed
-
-- Fixes regression introduced in 1.19.0 where using an `ActionFunc` as
-  the `Action` for a command would cause it to error rather than calling the
-  function. Should not have a affected declarative cases using `func(c
-  *cli.Context) err)`.
-- Shell completion now handles the case where the user specifies
-  `--generate-bash-completion` immediately after a flag that takes an argument.
-  Previously it call the application with `--generate-bash-completion` as the
-  flag value.
-
-## [1.19.0] - 2016-11-19
-### Added
-- `FlagsByName` was added to make it easy to sort flags (e.g. `sort.Sort(cli.FlagsByName(app.Flags))`)
-- A `Description` field was added to `App` for a more detailed description of
-  the application (similar to the existing `Description` field on `Command`)
-- Flag type code generation via `go generate`
-- Write to stderr and exit 1 if action returns non-nil error
-- Added support for TOML to the `altsrc` loader
-- `SkipArgReorder` was added to allow users to skip the argument reordering.
-  This is useful if you want to consider all "flags" after an argument as
-  arguments rather than flags (the default behavior of the stdlib `flag`
-  library). This is backported functionality from the [removal of the flag
-  reordering](https://github.com/urfave/cli/pull/398) in the unreleased version
-  2
-- For formatted errors (those implementing `ErrorFormatter`), the errors will
-  be formatted during output. Compatible with `pkg/errors`.
-
-### Changed
-- Raise minimum tested/supported Go version to 1.2+
-
-### Fixed
-- Consider empty environment variables as set (previously environment variables
-  with the equivalent of `""` would be skipped rather than their value used).
-- Return an error if the value in a given environment variable cannot be parsed
-  as the flag type. Previously these errors were silently swallowed.
-- Print full error when an invalid flag is specified (which includes the invalid flag)
-- `App.Writer` defaults to `stdout` when `nil`
-- If no action is specified on a command or app, the help is now printed instead of `panic`ing
-- `App.Metadata` is initialized automatically now (previously was `nil` unless initialized)
-- Correctly show help message if `-h` is provided to a subcommand
-- `context.(Global)IsSet` now respects environment variables. Previously it
-  would return `false` if a flag was specified in the environment rather than
-  as an argument
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-- `altsrc`s import paths were updated to use `gopkg.in/urfave/cli.v1`. This
-  fixes issues that occurred when `gopkg.in/urfave/cli.v1` was imported as well
-  as `altsrc` where Go would complain that the types didn't match
-
-## [1.18.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user (backported)
-
-## [1.18.0] - 2016-06-27
-### Added
-- `./runtests` test runner with coverage tracking by default
-- testing on OS X
-- testing on Windows
-- `UintFlag`, `Uint64Flag`, and `Int64Flag` types and supporting code
-
-### Changed
-- Use spaces for alignment in help/usage output instead of tabs, making the
-  output alignment consistent regardless of tab width
-
-### Fixed
-- Printing of command aliases in help text
-- Printing of visible flags for both struct and struct pointer flags
-- Display the `help` subcommand when using `CommandCategories`
-- No longer swallows `panic`s that occur within the `Action`s themselves when
-  detecting the signature of the `Action` field
-
-## [1.17.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-
-## [1.17.0] - 2016-05-09
-### Added
-- Pluggable flag-level help text rendering via `cli.DefaultFlagStringFunc`
-- `context.GlobalBoolT` was added as an analogue to `context.GlobalBool`
-- Support for hiding commands by setting `Hidden: true` -- this will hide the
-  commands in help output
-
-### Changed
-- `Float64Flag`, `IntFlag`, and `DurationFlag` default values are no longer
-  quoted in help text output.
-- All flag types now include `(default: {value})` strings following usage when a
-  default value can be (reasonably) detected.
-- `IntSliceFlag` and `StringSliceFlag` usage strings are now more consistent
-  with non-slice flag types
-- Apps now exit with a code of 3 if an unknown subcommand is specified
-  (previously they printed "No help topic for...", but still exited 0. This
-  makes it easier to script around apps built using `cli` since they can trust
-  that a 0 exit code indicated a successful execution.
-- cleanups based on [Go Report Card
-  feedback](https://goreportcard.com/report/github.com/urfave/cli)
-
-## [1.16.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-
-## [1.16.0] - 2016-05-02
-### Added
-- `Hidden` field on all flag struct types to omit from generated help text
-
-### Changed
-- `BashCompletionFlag` (`--enable-bash-completion`) is now omitted from
-generated help text via the `Hidden` field
-
-### Fixed
-- handling of error values in `HandleAction` and `HandleExitCoder`
-
-## [1.15.0] - 2016-04-30
-### Added
-- This file!
-- Support for placeholders in flag usage strings
-- `App.Metadata` map for arbitrary data/state management
-- `Set` and `GlobalSet` methods on `*cli.Context` for altering values after
-parsing.
-- Support for nested lookup of dot-delimited keys in structures loaded from
-YAML.
-
-### Changed
-- The `App.Action` and `Command.Action` now prefer a return signature of
-`func(*cli.Context) error`, as defined by `cli.ActionFunc`.  If a non-nil
-`error` is returned, there may be two outcomes:
-    - If the error fulfills `cli.ExitCoder`, then `os.Exit` will be called
-    automatically
-    - Else the error is bubbled up and returned from `App.Run`
-- Specifying an `Action` with the legacy return signature of
-`func(*cli.Context)` will produce a deprecation message to stderr
-- Specifying an `Action` that is not a `func` type will produce a non-zero exit
-from `App.Run`
-- Specifying an `Action` func that has an invalid (input) signature will
-produce a non-zero exit from `App.Run`
-
-### Deprecated
-- <a name="deprecated-cli-app-runandexitonerror"></a>
-`cli.App.RunAndExitOnError`, which should now be done by returning an error
-that fulfills `cli.ExitCoder` to `cli.App.Run`.
-- <a name="deprecated-cli-app-action-signature"></a> the legacy signature for
-`cli.App.Action` of `func(*cli.Context)`, which should now have a return
-signature of `func(*cli.Context) error`, as defined by `cli.ActionFunc`.
-
-### Fixed
-- Added missing `*cli.Context.GlobalFloat64` method
-
-## [1.14.0] - 2016-04-03 (backfilled 2016-04-25)
-### Added
-- Codebeat badge
-- Support for categorization via `CategorizedHelp` and `Categories` on app.
-
-### Changed
-- Use `filepath.Base` instead of `path.Base` in `Name` and `HelpName`.
-
-### Fixed
-- Ensure version is not shown in help text when `HideVersion` set.
-
-## [1.13.0] - 2016-03-06 (backfilled 2016-04-25)
-### Added
-- YAML file input support.
-- `NArg` method on context.
-
-## [1.12.0] - 2016-02-17 (backfilled 2016-04-25)
-### Added
-- Custom usage error handling.
-- Custom text support in `USAGE` section of help output.
-- Improved help messages for empty strings.
-- AppVeyor CI configuration.
-
-### Changed
-- Removed `panic` from default help printer func.
-- De-duping and optimizations.
-
-### Fixed
-- Correctly handle `Before`/`After` at command level when no subcommands.
-- Case of literal `-` argument causing flag reordering.
-- Environment variable hints on Windows.
-- Docs updates.
-
-## [1.11.1] - 2015-12-21 (backfilled 2016-04-25)
-### Changed
-- Use `path.Base` in `Name` and `HelpName`
-- Export `GetName` on flag types.
-
-### Fixed
-- Flag parsing when skipping is enabled.
-- Test output cleanup.
-- Move completion check to account for empty input case.
-
-## [1.11.0] - 2015-11-15 (backfilled 2016-04-25)
-### Added
-- Destination scan support for flags.
-- Testing against `tip` in Travis CI config.
-
-### Changed
-- Go version in Travis CI config.
-
-### Fixed
-- Removed redundant tests.
-- Use correct example naming in tests.
-
-## [1.10.2] - 2015-10-29 (backfilled 2016-04-25)
-### Fixed
-- Remove unused var in bash completion.
-
-## [1.10.1] - 2015-10-21 (backfilled 2016-04-25)
-### Added
-- Coverage and reference logos in README.
-
-### Fixed
-- Use specified values in help and version parsing.
-- Only display app version and help message once.
-
-## [1.10.0] - 2015-10-06 (backfilled 2016-04-25)
-### Added
-- More tests for existing functionality.
-- `ArgsUsage` at app and command level for help text flexibility.
-
-### Fixed
-- Honor `HideHelp` and `HideVersion` in `App.Run`.
-- Remove juvenile word from README.
-
-## [1.9.0] - 2015-09-08 (backfilled 2016-04-25)
-### Added
-- `FullName` on command with accompanying help output update.
-- Set default `$PROG` in bash completion.
-
-### Changed
-- Docs formatting.
-
-### Fixed
-- Removed self-referential imports in tests.
-
-## [1.8.0] - 2015-06-30 (backfilled 2016-04-25)
-### Added
-- Support for `Copyright` at app level.
-- `Parent` func at context level to walk up context lineage.
-
-### Fixed
-- Global flag processing at top level.
-
-## [1.7.1] - 2015-06-11 (backfilled 2016-04-25)
-### Added
-- Aggregate errors from `Before`/`After` funcs.
-- Doc comments on flag structs.
-- Include non-global flags when checking version and help.
-- Travis CI config updates.
-
-### Fixed
-- Ensure slice type flags have non-nil values.
-- Collect global flags from the full command hierarchy.
-- Docs prose.
-
-## [1.7.0] - 2015-05-03 (backfilled 2016-04-25)
-### Changed
-- `HelpPrinter` signature includes output writer.
-
-### Fixed
-- Specify go 1.1+ in docs.
-- Set `Writer` when running command as app.
-
-## [1.6.0] - 2015-03-23 (backfilled 2016-04-25)
-### Added
-- Multiple author support.
-- `NumFlags` at context level.
-- `Aliases` at command level.
-
-### Deprecated
-- `ShortName` at command level.
-
-### Fixed
-- Subcommand help output.
-- Backward compatible support for deprecated `Author` and `Email` fields.
-- Docs regarding `Names`/`Aliases`.
-
-## [1.5.0] - 2015-02-20 (backfilled 2016-04-25)
-### Added
-- `After` hook func support at app and command level.
-
-### Fixed
-- Use parsed context when running command as subcommand.
-- Docs prose.
-
-## [1.4.1] - 2015-01-09 (backfilled 2016-04-25)
-### Added
-- Support for hiding `-h / --help` flags, but not `help` subcommand.
-- Stop flag parsing after `--`.
-
-### Fixed
-- Help text for generic flags to specify single value.
-- Use double quotes in output for defaults.
-- Use `ParseInt` instead of `ParseUint` for int environment var values.
-- Use `0` as base when parsing int environment var values.
-
-## [1.4.0] - 2014-12-12 (backfilled 2016-04-25)
-### Added
-- Support for environment variable lookup "cascade".
-- Support for `Stdout` on app for output redirection.
-
-### Fixed
-- Print command help instead of app help in `ShowCommandHelp`.
-
-## [1.3.1] - 2014-11-13 (backfilled 2016-04-25)
-### Added
-- Docs and example code updates.
-
-### Changed
-- Default `-v / --version` flag made optional.
-
-## [1.3.0] - 2014-08-10 (backfilled 2016-04-25)
-### Added
-- `FlagNames` at context level.
-- Exposed `VersionPrinter` var for more control over version output.
-- Zsh completion hook.
-- `AUTHOR` section in default app help template.
-- Contribution guidelines.
-- `DurationFlag` type.
-
-## [1.2.0] - 2014-08-02
-### Added
-- Support for environment variable defaults on flags plus tests.
-
-## [1.1.0] - 2014-07-15
-### Added
-- Bash completion.
-- Optional hiding of built-in help command.
-- Optional skipping of flag parsing at command level.
-- `Author`, `Email`, and `Compiled` metadata on app.
-- `Before` hook func support at app and command level.
-- `CommandNotFound` func support at app level.
-- Command reference available on context.
-- `GenericFlag` type.
-- `Float64Flag` type.
-- `BoolTFlag` type.
-- `IsSet` flag helper on context.
-- More flag lookup funcs at context level.
-- More tests &amp; docs.
-
-### Changed
-- Help template updates to account for presence/absence of flags.
-- Separated subcommand help template.
-- Exposed `HelpPrinter` var for more control over help output.
-
-## [1.0.0] - 2013-11-01
-### Added
-- `help` flag in default app flag set and each command flag set.
-- Custom handling of argument parsing errors.
-- Command lookup by name at app level.
-- `StringSliceFlag` type and supporting `StringSlice` type.
-- `IntSliceFlag` type and supporting `IntSlice` type.
-- Slice type flag lookups by name at context level.
-- Export of app and command help functions.
-- More tests &amp; docs.
-
-## 0.1.0 - 2013-07-22
-### Added
-- Initial implementation.
-
-[Unreleased]: https://github.com/urfave/cli/compare/v1.18.0...HEAD
-[1.18.0]: https://github.com/urfave/cli/compare/v1.17.0...v1.18.0
-[1.17.0]: https://github.com/urfave/cli/compare/v1.16.0...v1.17.0
-[1.16.0]: https://github.com/urfave/cli/compare/v1.15.0...v1.16.0
-[1.15.0]: https://github.com/urfave/cli/compare/v1.14.0...v1.15.0
-[1.14.0]: https://github.com/urfave/cli/compare/v1.13.0...v1.14.0
-[1.13.0]: https://github.com/urfave/cli/compare/v1.12.0...v1.13.0
-[1.12.0]: https://github.com/urfave/cli/compare/v1.11.1...v1.12.0
-[1.11.1]: https://github.com/urfave/cli/compare/v1.11.0...v1.11.1
-[1.11.0]: https://github.com/urfave/cli/compare/v1.10.2...v1.11.0
-[1.10.2]: https://github.com/urfave/cli/compare/v1.10.1...v1.10.2
-[1.10.1]: https://github.com/urfave/cli/compare/v1.10.0...v1.10.1
-[1.10.0]: https://github.com/urfave/cli/compare/v1.9.0...v1.10.0
-[1.9.0]: https://github.com/urfave/cli/compare/v1.8.0...v1.9.0
-[1.8.0]: https://github.com/urfave/cli/compare/v1.7.1...v1.8.0
-[1.7.1]: https://github.com/urfave/cli/compare/v1.7.0...v1.7.1
-[1.7.0]: https://github.com/urfave/cli/compare/v1.6.0...v1.7.0
-[1.6.0]: https://github.com/urfave/cli/compare/v1.5.0...v1.6.0
-[1.5.0]: https://github.com/urfave/cli/compare/v1.4.1...v1.5.0
-[1.4.1]: https://github.com/urfave/cli/compare/v1.4.0...v1.4.1
-[1.4.0]: https://github.com/urfave/cli/compare/v1.3.1...v1.4.0
-[1.3.1]: https://github.com/urfave/cli/compare/v1.3.0...v1.3.1
-[1.3.0]: https://github.com/urfave/cli/compare/v1.2.0...v1.3.0
-[1.2.0]: https://github.com/urfave/cli/compare/v1.1.0...v1.2.0
-[1.1.0]: https://github.com/urfave/cli/compare/v1.0.0...v1.1.0
-[1.0.0]: https://github.com/urfave/cli/compare/v0.1.0...v1.0.0

vendor/github.com/urfave/cli/LICENSE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2016 Jeremy Saenz & Contributors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

vendor/github.com/urfave/cli/app.go

@@ -1,492 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"sort"
-	"time"
-)
-
-var (
-	changeLogURL                    = "https://github.com/urfave/cli/blob/master/CHANGELOG.md"
-	appActionDeprecationURL         = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL)
-	runAndExitOnErrorDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-runandexitonerror", changeLogURL)
-
-	contactSysadmin = "This is an error in the application.  Please contact the distributor of this application if this is not you."
-
-	errInvalidActionType = NewExitError("ERROR invalid Action type. "+
-		fmt.Sprintf("Must be `func(*Context`)` or `func(*Context) error).  %s", contactSysadmin)+
-		fmt.Sprintf("See %s", appActionDeprecationURL), 2)
-)
-
-// App is the main structure of a cli application. It is recommended that
-// an app be created with the cli.NewApp() function
-type App struct {
-	// The name of the program. Defaults to path.Base(os.Args[0])
-	Name string
-	// Full name of command for help, defaults to Name
-	HelpName string
-	// Description of the program.
-	Usage string
-	// Text to override the USAGE section of help
-	UsageText string
-	// Description of the program argument format.
-	ArgsUsage string
-	// Version of the program
-	Version string
-	// Description of the program
-	Description string
-	// List of commands to execute
-	Commands []Command
-	// List of flags to parse
-	Flags []Flag
-	// Boolean to enable bash completion commands
-	EnableBashCompletion bool
-	// Boolean to hide built-in help command
-	HideHelp bool
-	// Boolean to hide built-in version flag and the VERSION section of help
-	HideVersion bool
-	// Populate on app startup, only gettable through method Categories()
-	categories CommandCategories
-	// An action to execute when the bash-completion flag is set
-	BashComplete BashCompleteFunc
-	// An action to execute before any subcommands are run, but after the context is ready
-	// If a non-nil error is returned, no subcommands are run
-	Before BeforeFunc
-	// An action to execute after any subcommands are run, but after the subcommand has finished
-	// It is run even if Action() panics
-	After AfterFunc
-
-	// The action to execute when no subcommands are specified
-	// Expects a `cli.ActionFunc` but will accept the *deprecated* signature of `func(*cli.Context) {}`
-	// *Note*: support for the deprecated `Action` signature will be removed in a future version
-	Action interface{}
-
-	// Execute this function if the proper command cannot be found
-	CommandNotFound CommandNotFoundFunc
-	// Execute this function if an usage error occurs
-	OnUsageError OnUsageErrorFunc
-	// Compilation date
-	Compiled time.Time
-	// List of all authors who contributed
-	Authors []Author
-	// Copyright of the binary if any
-	Copyright string
-	// Name of Author (Note: Use App.Authors, this is deprecated)
-	Author string
-	// Email of Author (Note: Use App.Authors, this is deprecated)
-	Email string
-	// Writer writer to write output to
-	Writer io.Writer
-	// ErrWriter writes error output
-	ErrWriter io.Writer
-	// Other custom info
-	Metadata map[string]interface{}
-
-	didSetup bool
-}
-
-// Tries to find out when this binary was compiled.
-// Returns the current time if it fails to find it.
-func compileTime() time.Time {
-	info, err := os.Stat(os.Args[0])
-	if err != nil {
-		return time.Now()
-	}
-	return info.ModTime()
-}
-
-// NewApp creates a new cli Application with some reasonable defaults for Name,
-// Usage, Version and Action.
-func NewApp() *App {
-	return &App{
-		Name:         filepath.Base(os.Args[0]),
-		HelpName:     filepath.Base(os.Args[0]),
-		Usage:        "A new cli application",
-		UsageText:    "",
-		Version:      "0.0.0",
-		BashComplete: DefaultAppComplete,
-		Action:       helpCommand.Action,
-		Compiled:     compileTime(),
-		Writer:       os.Stdout,
-	}
-}
-
-// Setup runs initialization code to ensure all data structures are ready for
-// `Run` or inspection prior to `Run`.  It is internally called by `Run`, but
-// will return early if setup has already happened.
-func (a *App) Setup() {
-	if a.didSetup {
-		return
-	}
-
-	a.didSetup = true
-
-	if a.Author != "" || a.Email != "" {
-		a.Authors = append(a.Authors, Author{Name: a.Author, Email: a.Email})
-	}
-
-	newCmds := []Command{}
-	for _, c := range a.Commands {
-		if c.HelpName == "" {
-			c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name)
-		}
-		newCmds = append(newCmds, c)
-	}
-	a.Commands = newCmds
-
-	if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-		a.Commands = append(a.Commands, helpCommand)
-		if (HelpFlag != BoolFlag{}) {
-			a.appendFlag(HelpFlag)
-		}
-	}
-
-	if !a.HideVersion {
-		a.appendFlag(VersionFlag)
-	}
-
-	a.categories = CommandCategories{}
-	for _, command := range a.Commands {
-		a.categories = a.categories.AddCommand(command.Category, command)
-	}
-	sort.Sort(a.categories)
-
-	if a.Metadata == nil {
-		a.Metadata = make(map[string]interface{})
-	}
-
-	if a.Writer == nil {
-		a.Writer = os.Stdout
-	}
-}
-
-// Run is the entry point to the cli app. Parses the arguments slice and routes
-// to the proper flag/args combination
-func (a *App) Run(arguments []string) (err error) {
-	a.Setup()
-
-	// handle the completion flag separately from the flagset since
-	// completion could be attempted after a flag, but before its value was put
-	// on the command line. this causes the flagset to interpret the completion
-	// flag name as the value of the flag before it which is undesirable
-	// note that we can only do this because the shell autocomplete function
-	// always appends the completion flag at the end of the command
-	shellComplete, arguments := checkShellCompleteFlag(a, arguments)
-
-	// parse flags
-	set, err := flagSet(a.Name, a.Flags)
-	if err != nil {
-		return err
-	}
-
-	set.SetOutput(ioutil.Discard)
-	err = set.Parse(arguments[1:])
-	nerr := normalizeFlags(a.Flags, set)
-	context := NewContext(a, set, nil)
-	if nerr != nil {
-		fmt.Fprintln(a.Writer, nerr)
-		ShowAppHelp(context)
-		return nerr
-	}
-	context.shellComplete = shellComplete
-
-	if checkCompletions(context) {
-		return nil
-	}
-
-	if err != nil {
-		if a.OnUsageError != nil {
-			err := a.OnUsageError(context, err, false)
-			HandleExitCoder(err)
-			return err
-		}
-		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
-		ShowAppHelp(context)
-		return err
-	}
-
-	if !a.HideHelp && checkHelp(context) {
-		ShowAppHelp(context)
-		return nil
-	}
-
-	if !a.HideVersion && checkVersion(context) {
-		ShowVersion(context)
-		return nil
-	}
-
-	if a.After != nil {
-		defer func() {
-			if afterErr := a.After(context); afterErr != nil {
-				if err != nil {
-					err = NewMultiError(err, afterErr)
-				} else {
-					err = afterErr
-				}
-			}
-		}()
-	}
-
-	if a.Before != nil {
-		beforeErr := a.Before(context)
-		if beforeErr != nil {
-			fmt.Fprintf(a.Writer, "%v\n\n", beforeErr)
-			ShowAppHelp(context)
-			HandleExitCoder(beforeErr)
-			err = beforeErr
-			return err
-		}
-	}
-
-	args := context.Args()
-	if args.Present() {
-		name := args.First()
-		c := a.Command(name)
-		if c != nil {
-			return c.Run(context)
-		}
-	}
-
-	if a.Action == nil {
-		a.Action = helpCommand.Action
-	}
-
-	// Run default Action
-	err = HandleAction(a.Action, context)
-
-	HandleExitCoder(err)
-	return err
-}
-
-// RunAndExitOnError calls .Run() and exits non-zero if an error was returned
-//
-// Deprecated: instead you should return an error that fulfills cli.ExitCoder
-// to cli.App.Run. This will cause the application to exit with the given eror
-// code in the cli.ExitCoder
-func (a *App) RunAndExitOnError() {
-	if err := a.Run(os.Args); err != nil {
-		fmt.Fprintln(a.errWriter(), err)
-		OsExiter(1)
-	}
-}
-
-// RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() to
-// generate command-specific flags
-func (a *App) RunAsSubcommand(ctx *Context) (err error) {
-	// append help to commands
-	if len(a.Commands) > 0 {
-		if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-			a.Commands = append(a.Commands, helpCommand)
-			if (HelpFlag != BoolFlag{}) {
-				a.appendFlag(HelpFlag)
-			}
-		}
-	}
-
-	newCmds := []Command{}
-	for _, c := range a.Commands {
-		if c.HelpName == "" {
-			c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name)
-		}
-		newCmds = append(newCmds, c)
-	}
-	a.Commands = newCmds
-
-	// parse flags
-	set, err := flagSet(a.Name, a.Flags)
-	if err != nil {
-		return err
-	}
-
-	set.SetOutput(ioutil.Discard)
-	err = set.Parse(ctx.Args().Tail())
-	nerr := normalizeFlags(a.Flags, set)
-	context := NewContext(a, set, ctx)
-
-	if nerr != nil {
-		fmt.Fprintln(a.Writer, nerr)
-		fmt.Fprintln(a.Writer)
-		if len(a.Commands) > 0 {
-			ShowSubcommandHelp(context)
-		} else {
-			ShowCommandHelp(ctx, context.Args().First())
-		}
-		return nerr
-	}
-
-	if checkCompletions(context) {
-		return nil
-	}
-
-	if err != nil {
-		if a.OnUsageError != nil {
-			err = a.OnUsageError(context, err, true)
-			HandleExitCoder(err)
-			return err
-		}
-		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
-		ShowSubcommandHelp(context)
-		return err
-	}
-
-	if len(a.Commands) > 0 {
-		if checkSubcommandHelp(context) {
-			return nil
-		}
-	} else {
-		if checkCommandHelp(ctx, context.Args().First()) {
-			return nil
-		}
-	}
-
-	if a.After != nil {
-		defer func() {
-			afterErr := a.After(context)
-			if afterErr != nil {
-				HandleExitCoder(err)
-				if err != nil {
-					err = NewMultiError(err, afterErr)
-				} else {
-					err = afterErr
-				}
-			}
-		}()
-	}
-
-	if a.Before != nil {
-		beforeErr := a.Before(context)
-		if beforeErr != nil {
-			HandleExitCoder(beforeErr)
-			err = beforeErr
-			return err
-		}
-	}
-
-	args := context.Args()
-	if args.Present() {
-		name := args.First()
-		c := a.Command(name)
-		if c != nil {
-			return c.Run(context)
-		}
-	}
-
-	// Run default Action
-	err = HandleAction(a.Action, context)
-
-	HandleExitCoder(err)
-	return err
-}
-
-// Command returns the named command on App. Returns nil if the command does not exist
-func (a *App) Command(name string) *Command {
-	for _, c := range a.Commands {
-		if c.HasName(name) {
-			return &c
-		}
-	}
-
-	return nil
-}
-
-// Categories returns a slice containing all the categories with the commands they contain
-func (a *App) Categories() CommandCategories {
-	return a.categories
-}
-
-// VisibleCategories returns a slice of categories and commands that are
-// Hidden=false
-func (a *App) VisibleCategories() []*CommandCategory {
-	ret := []*CommandCategory{}
-	for _, category := range a.categories {
-		if visible := func() *CommandCategory {
-			for _, command := range category.Commands {
-				if !command.Hidden {
-					return category
-				}
-			}
-			return nil
-		}(); visible != nil {
-			ret = append(ret, visible)
-		}
-	}
-	return ret
-}
-
-// VisibleCommands returns a slice of the Commands with Hidden=false
-func (a *App) VisibleCommands() []Command {
-	ret := []Command{}
-	for _, command := range a.Commands {
-		if !command.Hidden {
-			ret = append(ret, command)
-		}
-	}
-	return ret
-}
-
-// VisibleFlags returns a slice of the Flags with Hidden=false
-func (a *App) VisibleFlags() []Flag {
-	return visibleFlags(a.Flags)
-}
-
-func (a *App) hasFlag(flag Flag) bool {
-	for _, f := range a.Flags {
-		if flag == f {
-			return true
-		}
-	}
-
-	return false
-}
-
-func (a *App) errWriter() io.Writer {
-
-	// When the app ErrWriter is nil use the package level one.
-	if a.ErrWriter == nil {
-		return ErrWriter
-	}
-
-	return a.ErrWriter
-}
-
-func (a *App) appendFlag(flag Flag) {
-	if !a.hasFlag(flag) {
-		a.Flags = append(a.Flags, flag)
-	}
-}
-
-// Author represents someone who has contributed to a cli project.
-type Author struct {
-	Name  string // The Authors name
-	Email string // The Authors email
-}
-
-// String makes Author comply to the Stringer interface, to allow an easy print in the templating process
-func (a Author) String() string {
-	e := ""
-	if a.Email != "" {
-		e = " <" + a.Email + ">"
-	}
-
-	return fmt.Sprintf("%v%v", a.Name, e)
-}
-
-// HandleAction attempts to figure out which Action signature was used.  If
-// it's an ActionFunc or a func with the legacy signature for Action, the func
-// is run!
-func HandleAction(action interface{}, context *Context) (err error) {
-	if a, ok := action.(ActionFunc); ok {
-		return a(context)
-	} else if a, ok := action.(func(*Context) error); ok {
-		return a(context)
-	} else if a, ok := action.(func(*Context)); ok { // deprecated function signature
-		a(context)
-		return nil
-	} else {
-		return errInvalidActionType
-	}
-}

vendor/github.com/urfave/cli/appveyor.yml

@@ -1,24 +0,0 @@
-version: "{build}"
-
-os: Windows Server 2012 R2
-
-clone_folder: c:\gopath\src\github.com\urfave\cli
-
-environment:
-  GOPATH: C:\gopath
-  GOVERSION: 1.6
-  PYTHON: C:\Python27-x64
-  PYTHON_VERSION: 2.7.x
-  PYTHON_ARCH: 64
-
-install:
-- set PATH=%GOPATH%\bin;C:\go\bin;%PATH%
-- go version
-- go env
-- go get github.com/urfave/gfmrun/...
-- go get -v -t ./...
-
-build_script:
-- python runtests vet
-- python runtests test
-- python runtests gfmrun

vendor/github.com/urfave/cli/category.go

@@ -1,44 +0,0 @@
-package cli
-
-// CommandCategories is a slice of *CommandCategory.
-type CommandCategories []*CommandCategory
-
-// CommandCategory is a category containing commands.
-type CommandCategory struct {
-	Name     string
-	Commands Commands
-}
-
-func (c CommandCategories) Less(i, j int) bool {
-	return c[i].Name < c[j].Name
-}
-
-func (c CommandCategories) Len() int {
-	return len(c)
-}
-
-func (c CommandCategories) Swap(i, j int) {
-	c[i], c[j] = c[j], c[i]
-}
-
-// AddCommand adds a command to a category.
-func (c CommandCategories) AddCommand(category string, command Command) CommandCategories {
-	for _, commandCategory := range c {
-		if commandCategory.Name == category {
-			commandCategory.Commands = append(commandCategory.Commands, command)
-			return c
-		}
-	}
-	return append(c, &CommandCategory{Name: category, Commands: []Command{command}})
-}
-
-// VisibleCommands returns a slice of the Commands with Hidden=false
-func (c *CommandCategory) VisibleCommands() []Command {
-	ret := []Command{}
-	for _, command := range c.Commands {
-		if !command.Hidden {
-			ret = append(ret, command)
-		}
-	}
-	return ret
-}

vendor/github.com/urfave/cli/cli.go

@@ -1,21 +0,0 @@
-// Package cli provides a minimal framework for creating and organizing command line
-// Go applications. cli is designed to be easy to understand and write, the most simple
-// cli application can be written as follows:
-//   func main() {
-//     cli.NewApp().Run(os.Args)
-//   }
-//
-// Of course this application does not do much, so let's make this an actual application:
-//   func main() {
-//     app := cli.NewApp()
-//     app.Name = "greet"
-//     app.Usage = "say a greeting"
-//     app.Action = func(c *cli.Context) error {
-//       println("Greetings")
-//     }
-//
-//     app.Run(os.Args)
-//   }
-package cli
-
-//go:generate python ./generate-flag-types cli -i flag-types.json -o flag_generated.go

vendor/github.com/urfave/cli/command.go

@@ -1,286 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io/ioutil"
-	"sort"
-	"strings"
-)
-
-// Command is a subcommand for a cli.App.
-type Command struct {
-	// The name of the command
-	Name string
-	// short name of the command. Typically one character (deprecated, use `Aliases`)
-	ShortName string
-	// A list of aliases for the command
-	Aliases []string
-	// A short description of the usage of this command
-	Usage string
-	// Custom text to show on USAGE section of help
-	UsageText string
-	// A longer explanation of how the command works
-	Description string
-	// A short description of the arguments of this command
-	ArgsUsage string
-	// The category the command is part of
-	Category string
-	// The function to call when checking for bash command completions
-	BashComplete BashCompleteFunc
-	// An action to execute before any sub-subcommands are run, but after the context is ready
-	// If a non-nil error is returned, no sub-subcommands are run
-	Before BeforeFunc
-	// An action to execute after any subcommands are run, but after the subcommand has finished
-	// It is run even if Action() panics
-	After AfterFunc
-	// The function to call when this command is invoked
-	Action interface{}
-	// TODO: replace `Action: interface{}` with `Action: ActionFunc` once some kind
-	// of deprecation period has passed, maybe?
-
-	// Execute this function if a usage error occurs.
-	OnUsageError OnUsageErrorFunc
-	// List of child commands
-	Subcommands Commands
-	// List of flags to parse
-	Flags []Flag
-	// Treat all flags as normal arguments if true
-	SkipFlagParsing bool
-	// Skip argument reordering which attempts to move flags before arguments,
-	// but only works if all flags appear after all arguments. This behavior was
-	// removed n version 2 since it only works under specific conditions so we
-	// backport here by exposing it as an option for compatibility.
-	SkipArgReorder bool
-	// Boolean to hide built-in help command
-	HideHelp bool
-	// Boolean to hide this command from help or completion
-	Hidden bool
-
-	// Full name of command for help, defaults to full command name, including parent commands.
-	HelpName        string
-	commandNamePath []string
-}
-
-// FullName returns the full name of the command.
-// For subcommands this ensures that parent commands are part of the command path
-func (c Command) FullName() string {
-	if c.commandNamePath == nil {
-		return c.Name
-	}
-	return strings.Join(c.commandNamePath, " ")
-}
-
-// Commands is a slice of Command
-type Commands []Command
-
-// Run invokes the command given the context, parses ctx.Args() to generate command-specific flags
-func (c Command) Run(ctx *Context) (err error) {
-	if len(c.Subcommands) > 0 {
-		return c.startApp(ctx)
-	}
-
-	if !c.HideHelp && (HelpFlag != BoolFlag{}) {
-		// append help to flags
-		c.Flags = append(
-			c.Flags,
-			HelpFlag,
-		)
-	}
-
-	set, err := flagSet(c.Name, c.Flags)
-	if err != nil {
-		return err
-	}
-	set.SetOutput(ioutil.Discard)
-
-	if c.SkipFlagParsing {
-		err = set.Parse(append([]string{"--"}, ctx.Args().Tail()...))
-	} else if !c.SkipArgReorder {
-		firstFlagIndex := -1
-		terminatorIndex := -1
-		for index, arg := range ctx.Args() {
-			if arg == "--" {
-				terminatorIndex = index
-				break
-			} else if arg == "-" {
-				// Do nothing. A dash alone is not really a flag.
-				continue
-			} else if strings.HasPrefix(arg, "-") && firstFlagIndex == -1 {
-				firstFlagIndex = index
-			}
-		}
-
-		if firstFlagIndex > -1 {
-			args := ctx.Args()
-			regularArgs := make([]string, len(args[1:firstFlagIndex]))
-			copy(regularArgs, args[1:firstFlagIndex])
-
-			var flagArgs []string
-			if terminatorIndex > -1 {
-				flagArgs = args[firstFlagIndex:terminatorIndex]
-				regularArgs = append(regularArgs, args[terminatorIndex:]...)
-			} else {
-				flagArgs = args[firstFlagIndex:]
-			}
-
-			err = set.Parse(append(flagArgs, regularArgs...))
-		} else {
-			err = set.Parse(ctx.Args().Tail())
-		}
-	} else {
-		err = set.Parse(ctx.Args().Tail())
-	}
-
-	nerr := normalizeFlags(c.Flags, set)
-	if nerr != nil {
-		fmt.Fprintln(ctx.App.Writer, nerr)
-		fmt.Fprintln(ctx.App.Writer)
-		ShowCommandHelp(ctx, c.Name)
-		return nerr
-	}
-
-	context := NewContext(ctx.App, set, ctx)
-	if checkCommandCompletions(context, c.Name) {
-		return nil
-	}
-
-	if err != nil {
-		if c.OnUsageError != nil {
-			err := c.OnUsageError(ctx, err, false)
-			HandleExitCoder(err)
-			return err
-		}
-		fmt.Fprintln(ctx.App.Writer, "Incorrect Usage:", err.Error())
-		fmt.Fprintln(ctx.App.Writer)
-		ShowCommandHelp(ctx, c.Name)
-		return err
-	}
-
-	if checkCommandHelp(context, c.Name) {
-		return nil
-	}
-
-	if c.After != nil {
-		defer func() {
-			afterErr := c.After(context)
-			if afterErr != nil {
-				HandleExitCoder(err)
-				if err != nil {
-					err = NewMultiError(err, afterErr)
-				} else {
-					err = afterErr
-				}
-			}
-		}()
-	}
-
-	if c.Before != nil {
-		err = c.Before(context)
-		if err != nil {
-			fmt.Fprintln(ctx.App.Writer, err)
-			fmt.Fprintln(ctx.App.Writer)
-			ShowCommandHelp(ctx, c.Name)
-			HandleExitCoder(err)
-			return err
-		}
-	}
-
-	if c.Action == nil {
-		c.Action = helpSubcommand.Action
-	}
-
-	context.Command = c
-	err = HandleAction(c.Action, context)
-
-	if err != nil {
-		HandleExitCoder(err)
-	}
-	return err
-}
-
-// Names returns the names including short names and aliases.
-func (c Command) Names() []string {
-	names := []string{c.Name}
-
-	if c.ShortName != "" {
-		names = append(names, c.ShortName)
-	}
-
-	return append(names, c.Aliases...)
-}
-
-// HasName returns true if Command.Name or Command.ShortName matches given name
-func (c Command) HasName(name string) bool {
-	for _, n := range c.Names() {
-		if n == name {
-			return true
-		}
-	}
-	return false
-}
-
-func (c Command) startApp(ctx *Context) error {
-	app := NewApp()
-	app.Metadata = ctx.App.Metadata
-	// set the name and usage
-	app.Name = fmt.Sprintf("%s %s", ctx.App.Name, c.Name)
-	if c.HelpName == "" {
-		app.HelpName = c.HelpName
-	} else {
-		app.HelpName = app.Name
-	}
-
-	if c.Description != "" {
-		app.Usage = c.Description
-	} else {
-		app.Usage = c.Usage
-	}
-
-	// set CommandNotFound
-	app.CommandNotFound = ctx.App.CommandNotFound
-
-	// set the flags and commands
-	app.Commands = c.Subcommands
-	app.Flags = c.Flags
-	app.HideHelp = c.HideHelp
-
-	app.Version = ctx.App.Version
-	app.HideVersion = ctx.App.HideVersion
-	app.Compiled = ctx.App.Compiled
-	app.Author = ctx.App.Author
-	app.Email = ctx.App.Email
-	app.Writer = ctx.App.Writer
-
-	app.categories = CommandCategories{}
-	for _, command := range c.Subcommands {
-		app.categories = app.categories.AddCommand(command.Category, command)
-	}
-
-	sort.Sort(app.categories)
-
-	// bash completion
-	app.EnableBashCompletion = ctx.App.EnableBashCompletion
-	if c.BashComplete != nil {
-		app.BashComplete = c.BashComplete
-	}
-
-	// set the actions
-	app.Before = c.Before
-	app.After = c.After
-	if c.Action != nil {
-		app.Action = c.Action
-	} else {
-		app.Action = helpSubcommand.Action
-	}
-
-	for index, cc := range app.Commands {
-		app.Commands[index].commandNamePath = []string{c.Name, cc.Name}
-	}
-
-	return app.RunAsSubcommand(ctx)
-}
-
-// VisibleFlags returns a slice of the Flags with Hidden=false
-func (c Command) VisibleFlags() []Flag {
-	return visibleFlags(c.Flags)
-}

vendor/github.com/urfave/cli/context.go

@@ -1,276 +0,0 @@
-package cli
-
-import (
-	"errors"
-	"flag"
-	"reflect"
-	"strings"
-	"syscall"
-)
-
-// Context is a type that is passed through to
-// each Handler action in a cli application. Context
-// can be used to retrieve context-specific Args and
-// parsed command-line options.
-type Context struct {
-	App           *App
-	Command       Command
-	shellComplete bool
-	flagSet       *flag.FlagSet
-	setFlags      map[string]bool
-	parentContext *Context
-}
-
-// NewContext creates a new context. For use in when invoking an App or Command action.
-func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context {
-	c := &Context{App: app, flagSet: set, parentContext: parentCtx}
-
-	if parentCtx != nil {
-		c.shellComplete = parentCtx.shellComplete
-	}
-
-	return c
-}
-
-// NumFlags returns the number of flags set
-func (c *Context) NumFlags() int {
-	return c.flagSet.NFlag()
-}
-
-// Set sets a context flag to a value.
-func (c *Context) Set(name, value string) error {
-	return c.flagSet.Set(name, value)
-}
-
-// GlobalSet sets a context flag to a value on the global flagset
-func (c *Context) GlobalSet(name, value string) error {
-	return globalContext(c).flagSet.Set(name, value)
-}
-
-// IsSet determines if the flag was actually set
-func (c *Context) IsSet(name string) bool {
-	if c.setFlags == nil {
-		c.setFlags = make(map[string]bool)
-
-		c.flagSet.Visit(func(f *flag.Flag) {
-			c.setFlags[f.Name] = true
-		})
-
-		c.flagSet.VisitAll(func(f *flag.Flag) {
-			if _, ok := c.setFlags[f.Name]; ok {
-				return
-			}
-			c.setFlags[f.Name] = false
-		})
-
-		// XXX hack to support IsSet for flags with EnvVar
-		//
-		// There isn't an easy way to do this with the current implementation since
-		// whether a flag was set via an environment variable is very difficult to
-		// determine here. Instead, we intend to introduce a backwards incompatible
-		// change in version 2 to add `IsSet` to the Flag interface to push the
-		// responsibility closer to where the information required to determine
-		// whether a flag is set by non-standard means such as environment
-		// variables is avaliable.
-		//
-		// See https://github.com/urfave/cli/issues/294 for additional discussion
-		flags := c.Command.Flags
-		if c.Command.Name == "" { // cannot == Command{} since it contains slice types
-			if c.App != nil {
-				flags = c.App.Flags
-			}
-		}
-		for _, f := range flags {
-			eachName(f.GetName(), func(name string) {
-				if isSet, ok := c.setFlags[name]; isSet || !ok {
-					return
-				}
-
-				val := reflect.ValueOf(f)
-				if val.Kind() == reflect.Ptr {
-					val = val.Elem()
-				}
-
-				envVarValue := val.FieldByName("EnvVar")
-				if !envVarValue.IsValid() {
-					return
-				}
-
-				eachName(envVarValue.String(), func(envVar string) {
-					envVar = strings.TrimSpace(envVar)
-					if _, ok := syscall.Getenv(envVar); ok {
-						c.setFlags[name] = true
-						return
-					}
-				})
-			})
-		}
-	}
-
-	return c.setFlags[name]
-}
-
-// GlobalIsSet determines if the global flag was actually set
-func (c *Context) GlobalIsSet(name string) bool {
-	ctx := c
-	if ctx.parentContext != nil {
-		ctx = ctx.parentContext
-	}
-
-	for ; ctx != nil; ctx = ctx.parentContext {
-		if ctx.IsSet(name) {
-			return true
-		}
-	}
-	return false
-}
-
-// FlagNames returns a slice of flag names used in this context.
-func (c *Context) FlagNames() (names []string) {
-	for _, flag := range c.Command.Flags {
-		name := strings.Split(flag.GetName(), ",")[0]
-		if name == "help" {
-			continue
-		}
-		names = append(names, name)
-	}
-	return
-}
-
-// GlobalFlagNames returns a slice of global flag names used by the app.
-func (c *Context) GlobalFlagNames() (names []string) {
-	for _, flag := range c.App.Flags {
-		name := strings.Split(flag.GetName(), ",")[0]
-		if name == "help" || name == "version" {
-			continue
-		}
-		names = append(names, name)
-	}
-	return
-}
-
-// Parent returns the parent context, if any
-func (c *Context) Parent() *Context {
-	return c.parentContext
-}
-
-// value returns the value of the flag coressponding to `name`
-func (c *Context) value(name string) interface{} {
-	return c.flagSet.Lookup(name).Value.(flag.Getter).Get()
-}
-
-// Args contains apps console arguments
-type Args []string
-
-// Args returns the command line arguments associated with the context.
-func (c *Context) Args() Args {
-	args := Args(c.flagSet.Args())
-	return args
-}
-
-// NArg returns the number of the command line arguments.
-func (c *Context) NArg() int {
-	return len(c.Args())
-}
-
-// Get returns the nth argument, or else a blank string
-func (a Args) Get(n int) string {
-	if len(a) > n {
-		return a[n]
-	}
-	return ""
-}
-
-// First returns the first argument, or else a blank string
-func (a Args) First() string {
-	return a.Get(0)
-}
-
-// Tail returns the rest of the arguments (not the first one)
-// or else an empty string slice
-func (a Args) Tail() []string {
-	if len(a) >= 2 {
-		return []string(a)[1:]
-	}
-	return []string{}
-}
-
-// Present checks if there are any arguments present
-func (a Args) Present() bool {
-	return len(a) != 0
-}
-
-// Swap swaps arguments at the given indexes
-func (a Args) Swap(from, to int) error {
-	if from >= len(a) || to >= len(a) {
-		return errors.New("index out of range")
-	}
-	a[from], a[to] = a[to], a[from]
-	return nil
-}
-
-func globalContext(ctx *Context) *Context {
-	if ctx == nil {
-		return nil
-	}
-
-	for {
-		if ctx.parentContext == nil {
-			return ctx
-		}
-		ctx = ctx.parentContext
-	}
-}
-
-func lookupGlobalFlagSet(name string, ctx *Context) *flag.FlagSet {
-	if ctx.parentContext != nil {
-		ctx = ctx.parentContext
-	}
-	for ; ctx != nil; ctx = ctx.parentContext {
-		if f := ctx.flagSet.Lookup(name); f != nil {
-			return ctx.flagSet
-		}
-	}
-	return nil
-}
-
-func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) {
-	switch ff.Value.(type) {
-	case *StringSlice:
-	default:
-		set.Set(name, ff.Value.String())
-	}
-}
-
-func normalizeFlags(flags []Flag, set *flag.FlagSet) error {
-	visited := make(map[string]bool)
-	set.Visit(func(f *flag.Flag) {
-		visited[f.Name] = true
-	})
-	for _, f := range flags {
-		parts := strings.Split(f.GetName(), ",")
-		if len(parts) == 1 {
-			continue
-		}
-		var ff *flag.Flag
-		for _, name := range parts {
-			name = strings.Trim(name, " ")
-			if visited[name] {
-				if ff != nil {
-					return errors.New("Cannot use two forms of the same flag: " + name + " " + ff.Name)
-				}
-				ff = set.Lookup(name)
-			}
-		}
-		if ff == nil {
-			continue
-		}
-		for _, name := range parts {
-			name = strings.Trim(name, " ")
-			if !visited[name] {
-				copyFlag(name, ff, set)
-			}
-		}
-	}
-	return nil
-}

vendor/github.com/urfave/cli/errors.go

@@ -1,110 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"strings"
-)
-
-// OsExiter is the function used when the app exits. If not set defaults to os.Exit.
-var OsExiter = os.Exit
-
-// ErrWriter is used to write errors to the user. This can be anything
-// implementing the io.Writer interface and defaults to os.Stderr.
-var ErrWriter io.Writer = os.Stderr
-
-// MultiError is an error that wraps multiple errors.
-type MultiError struct {
-	Errors []error
-}
-
-// NewMultiError creates a new MultiError. Pass in one or more errors.
-func NewMultiError(err ...error) MultiError {
-	return MultiError{Errors: err}
-}
-
-// Error implements the error interface.
-func (m MultiError) Error() string {
-	errs := make([]string, len(m.Errors))
-	for i, err := range m.Errors {
-		errs[i] = err.Error()
-	}
-
-	return strings.Join(errs, "\n")
-}
-
-type ErrorFormatter interface {
-	Format(s fmt.State, verb rune)
-}
-
-// ExitCoder is the interface checked by `App` and `Command` for a custom exit
-// code
-type ExitCoder interface {
-	error
-	ExitCode() int
-}
-
-// ExitError fulfills both the builtin `error` interface and `ExitCoder`
-type ExitError struct {
-	exitCode int
-	message  interface{}
-}
-
-// NewExitError makes a new *ExitError
-func NewExitError(message interface{}, exitCode int) *ExitError {
-	return &ExitError{
-		exitCode: exitCode,
-		message:  message,
-	}
-}
-
-// Error returns the string message, fulfilling the interface required by
-// `error`
-func (ee *ExitError) Error() string {
-	return fmt.Sprintf("%v", ee.message)
-}
-
-// ExitCode returns the exit code, fulfilling the interface required by
-// `ExitCoder`
-func (ee *ExitError) ExitCode() int {
-	return ee.exitCode
-}
-
-// HandleExitCoder checks if the error fulfills the ExitCoder interface, and if
-// so prints the error to stderr (if it is non-empty) and calls OsExiter with the
-// given exit code.  If the given error is a MultiError, then this func is
-// called on all members of the Errors slice.
-func HandleExitCoder(err error) {
-	if err == nil {
-		return
-	}
-
-	if exitErr, ok := err.(ExitCoder); ok {
-		if err.Error() != "" {
-			if _, ok := exitErr.(ErrorFormatter); ok {
-				fmt.Fprintf(ErrWriter, "%+v\n", err)
-			} else {
-				fmt.Fprintln(ErrWriter, err)
-			}
-		}
-		OsExiter(exitErr.ExitCode())
-		return
-	}
-
-	if multiErr, ok := err.(MultiError); ok {
-		for _, merr := range multiErr.Errors {
-			HandleExitCoder(merr)
-		}
-		return
-	}
-
-	if err.Error() != "" {
-		if _, ok := err.(ErrorFormatter); ok {
-			fmt.Fprintf(ErrWriter, "%+v\n", err)
-		} else {
-			fmt.Fprintln(ErrWriter, err)
-		}
-	}
-	OsExiter(1)
-}

vendor/github.com/urfave/cli/flag-types.json

@@ -1,93 +0,0 @@
-[
-  {
-    "name": "Bool",
-    "type": "bool",
-    "value": false,
-    "context_default": "false",
-    "parser": "strconv.ParseBool(f.Value.String())"
-  },
-  {
-    "name": "BoolT",
-    "type": "bool",
-    "value": false,
-    "doctail": " that is true by default",
-    "context_default": "false",
-    "parser": "strconv.ParseBool(f.Value.String())"
-  },
-  {
-    "name": "Duration",
-    "type": "time.Duration",
-    "doctail": " (see https://golang.org/pkg/time/#ParseDuration)",
-    "context_default": "0",
-    "parser": "time.ParseDuration(f.Value.String())"
-  },
-  {
-    "name": "Float64",
-    "type": "float64",
-    "context_default": "0",
-    "parser": "strconv.ParseFloat(f.Value.String(), 64)"
-  },
-  {
-    "name": "Generic",
-    "type": "Generic",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "interface{}"
-  },
-  {
-    "name": "Int64",
-    "type": "int64",
-    "context_default": "0",
-    "parser": "strconv.ParseInt(f.Value.String(), 0, 64)"
-  },
-  {
-    "name": "Int",
-    "type": "int",
-    "context_default": "0",
-    "parser": "strconv.ParseInt(f.Value.String(), 0, 64)",
-    "parser_cast": "int(parsed)"
-  },
-  {
-    "name": "IntSlice",
-    "type": "*IntSlice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]int",
-    "parser": "(f.Value.(*IntSlice)).Value(), error(nil)"
-  },
-  {
-    "name": "Int64Slice",
-    "type": "*Int64Slice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]int64",
-    "parser": "(f.Value.(*Int64Slice)).Value(), error(nil)"
-  },
-  {
-    "name": "String",
-    "type": "string",
-    "context_default": "\"\"",
-    "parser": "f.Value.String(), error(nil)"
-  },
-  {
-    "name": "StringSlice",
-    "type": "*StringSlice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]string",
-    "parser": "(f.Value.(*StringSlice)).Value(), error(nil)"
-  },
-  {
-    "name": "Uint64",
-    "type": "uint64",
-    "context_default": "0",
-    "parser": "strconv.ParseUint(f.Value.String(), 0, 64)"
-  },
-  {
-    "name": "Uint",
-    "type": "uint",
-    "context_default": "0",
-    "parser": "strconv.ParseUint(f.Value.String(), 0, 64)",
-    "parser_cast": "uint(parsed)"
-  }
-]

vendor/github.com/urfave/cli/flag.go

@@ -1,799 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"reflect"
-	"runtime"
-	"strconv"
-	"strings"
-	"syscall"
-	"time"
-)
-
-const defaultPlaceholder = "value"
-
-// BashCompletionFlag enables bash-completion for all commands and subcommands
-var BashCompletionFlag = BoolFlag{
-	Name:   "generate-bash-completion",
-	Hidden: true,
-}
-
-// VersionFlag prints the version for the application
-var VersionFlag = BoolFlag{
-	Name:  "version, v",
-	Usage: "print the version",
-}
-
-// HelpFlag prints the help for all commands and subcommands
-// Set to the zero value (BoolFlag{}) to disable flag -- keeps subcommand
-// unless HideHelp is set to true)
-var HelpFlag = BoolFlag{
-	Name:  "help, h",
-	Usage: "show help",
-}
-
-// FlagStringer converts a flag definition to a string. This is used by help
-// to display a flag.
-var FlagStringer FlagStringFunc = stringifyFlag
-
-// FlagsByName is a slice of Flag.
-type FlagsByName []Flag
-
-func (f FlagsByName) Len() int {
-	return len(f)
-}
-
-func (f FlagsByName) Less(i, j int) bool {
-	return f[i].GetName() < f[j].GetName()
-}
-
-func (f FlagsByName) Swap(i, j int) {
-	f[i], f[j] = f[j], f[i]
-}
-
-// Flag is a common interface related to parsing flags in cli.
-// For more advanced flag parsing techniques, it is recommended that
-// this interface be implemented.
-type Flag interface {
-	fmt.Stringer
-	// Apply Flag settings to the given flag set
-	Apply(*flag.FlagSet)
-	GetName() string
-}
-
-// errorableFlag is an interface that allows us to return errors during apply
-// it allows flags defined in this library to return errors in a fashion backwards compatible
-// TODO remove in v2 and modify the existing Flag interface to return errors
-type errorableFlag interface {
-	Flag
-
-	ApplyWithError(*flag.FlagSet) error
-}
-
-func flagSet(name string, flags []Flag) (*flag.FlagSet, error) {
-	set := flag.NewFlagSet(name, flag.ContinueOnError)
-
-	for _, f := range flags {
-		//TODO remove in v2 when errorableFlag is removed
-		if ef, ok := f.(errorableFlag); ok {
-			if err := ef.ApplyWithError(set); err != nil {
-				return nil, err
-			}
-		} else {
-			f.Apply(set)
-		}
-	}
-	return set, nil
-}
-
-func eachName(longName string, fn func(string)) {
-	parts := strings.Split(longName, ",")
-	for _, name := range parts {
-		name = strings.Trim(name, " ")
-		fn(name)
-	}
-}
-
-// Generic is a generic parseable type identified by a specific flag
-type Generic interface {
-	Set(value string) error
-	String() string
-}
-
-// Apply takes the flagset and calls Set on the generic flag with the value
-// provided by the user for parsing by the flag
-// Ignores parsing errors
-func (f GenericFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError takes the flagset and calls Set on the generic flag with the value
-// provided by the user for parsing by the flag
-func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := f.Value
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if err := val.Set(envVal); err != nil {
-					return fmt.Errorf("could not parse %s as value for flag %s: %s", envVal, f.Name, err)
-				}
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// StringSlice is an opaque type for []string to satisfy flag.Value and flag.Getter
-type StringSlice []string
-
-// Set appends the string value to the list of values
-func (f *StringSlice) Set(value string) error {
-	*f = append(*f, value)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *StringSlice) String() string {
-	return fmt.Sprintf("%s", *f)
-}
-
-// Value returns the slice of strings set by this flag
-func (f *StringSlice) Value() []string {
-	return *f
-}
-
-// Get returns the slice of strings set by this flag
-func (f *StringSlice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f StringSliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &StringSlice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as string value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &StringSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type IntSlice []int
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *IntSlice) Set(value string) error {
-	tmp, err := strconv.Atoi(value)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *IntSlice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *IntSlice) Value() []int {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *IntSlice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f IntSliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &IntSlice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as int slice value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &IntSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type Int64Slice []int64
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *Int64Slice) Set(value string) error {
-	tmp, err := strconv.ParseInt(value, 10, 64)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *Int64Slice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *Int64Slice) Value() []int64 {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *Int64Slice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &Int64Slice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &Int64Slice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := false
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if envVal == "" {
-					val = false
-					break
-				}
-
-				envValBool, err := strconv.ParseBool(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				val = envValBool
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolTFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := true
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if envVal == "" {
-					val = false
-					break
-				}
-
-				envValBool, err := strconv.ParseBool(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				val = envValBool
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f StringFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				f.Value = envVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.StringVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.String(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f IntFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseInt(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
-				}
-				f.Value = int(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.IntVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Int(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Int64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseInt(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = envValInt
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Int64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Int64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f UintFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f UintFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseUint(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as uint value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = uint(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.UintVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Uint(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Uint64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Uint64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseUint(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as uint64 value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = uint64(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Uint64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Uint64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f DurationFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValDuration, err := time.ParseDuration(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = envValDuration
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.DurationVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Duration(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Float64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Float64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValFloat, err := strconv.ParseFloat(envVal, 10)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as float64 value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = float64(envValFloat)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Float64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Float64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-func visibleFlags(fl []Flag) []Flag {
-	visible := []Flag{}
-	for _, flag := range fl {
-		if !flagValue(flag).FieldByName("Hidden").Bool() {
-			visible = append(visible, flag)
-		}
-	}
-	return visible
-}
-
-func prefixFor(name string) (prefix string) {
-	if len(name) == 1 {
-		prefix = "-"
-	} else {
-		prefix = "--"
-	}
-
-	return
-}
-
-// Returns the placeholder, if any, and the unquoted usage string.
-func unquoteUsage(usage string) (string, string) {
-	for i := 0; i < len(usage); i++ {
-		if usage[i] == '`' {
-			for j := i + 1; j < len(usage); j++ {
-				if usage[j] == '`' {
-					name := usage[i+1 : j]
-					usage = usage[:i] + name + usage[j+1:]
-					return name, usage
-				}
-			}
-			break
-		}
-	}
-	return "", usage
-}
-
-func prefixedNames(fullName, placeholder string) string {
-	var prefixed string
-	parts := strings.Split(fullName, ",")
-	for i, name := range parts {
-		name = strings.Trim(name, " ")
-		prefixed += prefixFor(name) + name
-		if placeholder != "" {
-			prefixed += " " + placeholder
-		}
-		if i < len(parts)-1 {
-			prefixed += ", "
-		}
-	}
-	return prefixed
-}
-
-func withEnvHint(envVar, str string) string {
-	envText := ""
-	if envVar != "" {
-		prefix := "$"
-		suffix := ""
-		sep := ", $"
-		if runtime.GOOS == "windows" {
-			prefix = "%"
-			suffix = "%"
-			sep = "%, %"
-		}
-		envText = fmt.Sprintf(" [%s%s%s]", prefix, strings.Join(strings.Split(envVar, ","), sep), suffix)
-	}
-	return str + envText
-}
-
-func flagValue(f Flag) reflect.Value {
-	fv := reflect.ValueOf(f)
-	for fv.Kind() == reflect.Ptr {
-		fv = reflect.Indirect(fv)
-	}
-	return fv
-}
-
-func stringifyFlag(f Flag) string {
-	fv := flagValue(f)
-
-	switch f.(type) {
-	case IntSliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyIntSliceFlag(f.(IntSliceFlag)))
-	case Int64SliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyInt64SliceFlag(f.(Int64SliceFlag)))
-	case StringSliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyStringSliceFlag(f.(StringSliceFlag)))
-	}
-
-	placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String())
-
-	needsPlaceholder := false
-	defaultValueString := ""
-	val := fv.FieldByName("Value")
-
-	if val.IsValid() {
-		needsPlaceholder = true
-		defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface())
-
-		if val.Kind() == reflect.String && val.String() != "" {
-			defaultValueString = fmt.Sprintf(" (default: %q)", val.String())
-		}
-	}
-
-	if defaultValueString == " (default: )" {
-		defaultValueString = ""
-	}
-
-	if needsPlaceholder && placeholder == "" {
-		placeholder = defaultPlaceholder
-	}
-
-	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultValueString))
-
-	return withEnvHint(fv.FieldByName("EnvVar").String(),
-		fmt.Sprintf("%s\t%s", prefixedNames(fv.FieldByName("Name").String(), placeholder), usageWithDefault))
-}
-
-func stringifyIntSliceFlag(f IntSliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, i := range f.Value.Value() {
-			defaultVals = append(defaultVals, fmt.Sprintf("%d", i))
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifyInt64SliceFlag(f Int64SliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, i := range f.Value.Value() {
-			defaultVals = append(defaultVals, fmt.Sprintf("%d", i))
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifyStringSliceFlag(f StringSliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, s := range f.Value.Value() {
-			if len(s) > 0 {
-				defaultVals = append(defaultVals, fmt.Sprintf("%q", s))
-			}
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifySliceFlag(usage, name string, defaultVals []string) string {
-	placeholder, usage := unquoteUsage(usage)
-	if placeholder == "" {
-		placeholder = defaultPlaceholder
-	}
-
-	defaultVal := ""
-	if len(defaultVals) > 0 {
-		defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", "))
-	}
-
-	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultVal))
-	return fmt.Sprintf("%s\t%s", prefixedNames(name, placeholder), usageWithDefault)
-}

vendor/github.com/urfave/cli/flag_generated.go

@@ -1,627 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"strconv"
-	"time"
-)
-
-// WARNING: This file is generated!
-
-// BoolFlag is a flag with type bool
-type BoolFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Destination *bool
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f BoolFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f BoolFlag) GetName() string {
-	return f.Name
-}
-
-// Bool looks up the value of a local BoolFlag, returns
-// false if not found
-func (c *Context) Bool(name string) bool {
-	return lookupBool(name, c.flagSet)
-}
-
-// GlobalBool looks up the value of a global BoolFlag, returns
-// false if not found
-func (c *Context) GlobalBool(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupBool(name, fs)
-	}
-	return false
-}
-
-func lookupBool(name string, set *flag.FlagSet) bool {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseBool(f.Value.String())
-		if err != nil {
-			return false
-		}
-		return parsed
-	}
-	return false
-}
-
-// BoolTFlag is a flag with type bool that is true by default
-type BoolTFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Destination *bool
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f BoolTFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f BoolTFlag) GetName() string {
-	return f.Name
-}
-
-// BoolT looks up the value of a local BoolTFlag, returns
-// false if not found
-func (c *Context) BoolT(name string) bool {
-	return lookupBoolT(name, c.flagSet)
-}
-
-// GlobalBoolT looks up the value of a global BoolTFlag, returns
-// false if not found
-func (c *Context) GlobalBoolT(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupBoolT(name, fs)
-	}
-	return false
-}
-
-func lookupBoolT(name string, set *flag.FlagSet) bool {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseBool(f.Value.String())
-		if err != nil {
-			return false
-		}
-		return parsed
-	}
-	return false
-}
-
-// DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration)
-type DurationFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       time.Duration
-	Destination *time.Duration
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f DurationFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f DurationFlag) GetName() string {
-	return f.Name
-}
-
-// Duration looks up the value of a local DurationFlag, returns
-// 0 if not found
-func (c *Context) Duration(name string) time.Duration {
-	return lookupDuration(name, c.flagSet)
-}
-
-// GlobalDuration looks up the value of a global DurationFlag, returns
-// 0 if not found
-func (c *Context) GlobalDuration(name string) time.Duration {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupDuration(name, fs)
-	}
-	return 0
-}
-
-func lookupDuration(name string, set *flag.FlagSet) time.Duration {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := time.ParseDuration(f.Value.String())
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// Float64Flag is a flag with type float64
-type Float64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       float64
-	Destination *float64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Float64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Float64Flag) GetName() string {
-	return f.Name
-}
-
-// Float64 looks up the value of a local Float64Flag, returns
-// 0 if not found
-func (c *Context) Float64(name string) float64 {
-	return lookupFloat64(name, c.flagSet)
-}
-
-// GlobalFloat64 looks up the value of a global Float64Flag, returns
-// 0 if not found
-func (c *Context) GlobalFloat64(name string) float64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupFloat64(name, fs)
-	}
-	return 0
-}
-
-func lookupFloat64(name string, set *flag.FlagSet) float64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseFloat(f.Value.String(), 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// GenericFlag is a flag with type Generic
-type GenericFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  Generic
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f GenericFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f GenericFlag) GetName() string {
-	return f.Name
-}
-
-// Generic looks up the value of a local GenericFlag, returns
-// nil if not found
-func (c *Context) Generic(name string) interface{} {
-	return lookupGeneric(name, c.flagSet)
-}
-
-// GlobalGeneric looks up the value of a global GenericFlag, returns
-// nil if not found
-func (c *Context) GlobalGeneric(name string) interface{} {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupGeneric(name, fs)
-	}
-	return nil
-}
-
-func lookupGeneric(name string, set *flag.FlagSet) interface{} {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := f.Value, error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Int64Flag is a flag with type int64
-type Int64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       int64
-	Destination *int64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Int64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Int64Flag) GetName() string {
-	return f.Name
-}
-
-// Int64 looks up the value of a local Int64Flag, returns
-// 0 if not found
-func (c *Context) Int64(name string) int64 {
-	return lookupInt64(name, c.flagSet)
-}
-
-// GlobalInt64 looks up the value of a global Int64Flag, returns
-// 0 if not found
-func (c *Context) GlobalInt64(name string) int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt64(name, fs)
-	}
-	return 0
-}
-
-func lookupInt64(name string, set *flag.FlagSet) int64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// IntFlag is a flag with type int
-type IntFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       int
-	Destination *int
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f IntFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f IntFlag) GetName() string {
-	return f.Name
-}
-
-// Int looks up the value of a local IntFlag, returns
-// 0 if not found
-func (c *Context) Int(name string) int {
-	return lookupInt(name, c.flagSet)
-}
-
-// GlobalInt looks up the value of a global IntFlag, returns
-// 0 if not found
-func (c *Context) GlobalInt(name string) int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt(name, fs)
-	}
-	return 0
-}
-
-func lookupInt(name string, set *flag.FlagSet) int {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return int(parsed)
-	}
-	return 0
-}
-
-// IntSliceFlag is a flag with type *IntSlice
-type IntSliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *IntSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f IntSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f IntSliceFlag) GetName() string {
-	return f.Name
-}
-
-// IntSlice looks up the value of a local IntSliceFlag, returns
-// nil if not found
-func (c *Context) IntSlice(name string) []int {
-	return lookupIntSlice(name, c.flagSet)
-}
-
-// GlobalIntSlice looks up the value of a global IntSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalIntSlice(name string) []int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupIntSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupIntSlice(name string, set *flag.FlagSet) []int {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Int64SliceFlag is a flag with type *Int64Slice
-type Int64SliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *Int64Slice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Int64SliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Int64SliceFlag) GetName() string {
-	return f.Name
-}
-
-// Int64Slice looks up the value of a local Int64SliceFlag, returns
-// nil if not found
-func (c *Context) Int64Slice(name string) []int64 {
-	return lookupInt64Slice(name, c.flagSet)
-}
-
-// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns
-// nil if not found
-func (c *Context) GlobalInt64Slice(name string) []int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt64Slice(name, fs)
-	}
-	return nil
-}
-
-func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// StringFlag is a flag with type string
-type StringFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       string
-	Destination *string
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f StringFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f StringFlag) GetName() string {
-	return f.Name
-}
-
-// String looks up the value of a local StringFlag, returns
-// "" if not found
-func (c *Context) String(name string) string {
-	return lookupString(name, c.flagSet)
-}
-
-// GlobalString looks up the value of a global StringFlag, returns
-// "" if not found
-func (c *Context) GlobalString(name string) string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupString(name, fs)
-	}
-	return ""
-}
-
-func lookupString(name string, set *flag.FlagSet) string {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := f.Value.String(), error(nil)
-		if err != nil {
-			return ""
-		}
-		return parsed
-	}
-	return ""
-}
-
-// StringSliceFlag is a flag with type *StringSlice
-type StringSliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *StringSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f StringSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f StringSliceFlag) GetName() string {
-	return f.Name
-}
-
-// StringSlice looks up the value of a local StringSliceFlag, returns
-// nil if not found
-func (c *Context) StringSlice(name string) []string {
-	return lookupStringSlice(name, c.flagSet)
-}
-
-// GlobalStringSlice looks up the value of a global StringSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalStringSlice(name string) []string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupStringSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupStringSlice(name string, set *flag.FlagSet) []string {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*StringSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Uint64Flag is a flag with type uint64
-type Uint64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       uint64
-	Destination *uint64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Uint64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Uint64Flag) GetName() string {
-	return f.Name
-}
-
-// Uint64 looks up the value of a local Uint64Flag, returns
-// 0 if not found
-func (c *Context) Uint64(name string) uint64 {
-	return lookupUint64(name, c.flagSet)
-}
-
-// GlobalUint64 looks up the value of a global Uint64Flag, returns
-// 0 if not found
-func (c *Context) GlobalUint64(name string) uint64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupUint64(name, fs)
-	}
-	return 0
-}
-
-func lookupUint64(name string, set *flag.FlagSet) uint64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// UintFlag is a flag with type uint
-type UintFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       uint
-	Destination *uint
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f UintFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f UintFlag) GetName() string {
-	return f.Name
-}
-
-// Uint looks up the value of a local UintFlag, returns
-// 0 if not found
-func (c *Context) Uint(name string) uint {
-	return lookupUint(name, c.flagSet)
-}
-
-// GlobalUint looks up the value of a global UintFlag, returns
-// 0 if not found
-func (c *Context) GlobalUint(name string) uint {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupUint(name, fs)
-	}
-	return 0
-}
-
-func lookupUint(name string, set *flag.FlagSet) uint {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return uint(parsed)
-	}
-	return 0
-}

vendor/github.com/urfave/cli/funcs.go

@@ -1,28 +0,0 @@
-package cli
-
-// BashCompleteFunc is an action to execute when the bash-completion flag is set
-type BashCompleteFunc func(*Context)
-
-// BeforeFunc is an action to execute before any subcommands are run, but after
-// the context is ready if a non-nil error is returned, no subcommands are run
-type BeforeFunc func(*Context) error
-
-// AfterFunc is an action to execute after any subcommands are run, but after the
-// subcommand has finished it is run even if Action() panics
-type AfterFunc func(*Context) error
-
-// ActionFunc is the action to execute when no subcommands are specified
-type ActionFunc func(*Context) error
-
-// CommandNotFoundFunc is executed if the proper command cannot be found
-type CommandNotFoundFunc func(*Context, string)
-
-// OnUsageErrorFunc is executed if an usage error occurs. This is useful for displaying
-// customized usage error messages.  This function is able to replace the
-// original error messages.  If this function is not set, the "Incorrect usage"
-// is displayed and the execution is interrupted.
-type OnUsageErrorFunc func(context *Context, err error, isSubcommand bool) error
-
-// FlagStringFunc is used by the help generation to display a flag, which is
-// expected to be a single line.
-type FlagStringFunc func(Flag) string

vendor/github.com/urfave/cli/generate-flag-types

@@ -1,255 +0,0 @@
-#!/usr/bin/env python
-"""
-The flag types that ship with the cli library have many things in common, and
-so we can take advantage of the `go generate` command to create much of the
-source code from a list of definitions.  These definitions attempt to cover
-the parts that vary between flag types, and should evolve as needed.
-
-An example of the minimum definition needed is:
-
-    {
-      "name": "SomeType",
-      "type": "sometype",
-      "context_default": "nil"
-    }
-
-In this example, the code generated for the `cli` package will include a type
-named `SomeTypeFlag` that is expected to wrap a value of type `sometype`.
-Fetching values by name via `*cli.Context` will default to a value of `nil`.
-
-A more complete, albeit somewhat redundant, example showing all available
-definition keys is:
-
-    {
-      "name": "VeryMuchType",
-      "type": "*VeryMuchType",
-      "value": true,
-      "dest": false,
-      "doctail": " which really only wraps a []float64, oh well!",
-      "context_type": "[]float64",
-      "context_default": "nil",
-      "parser": "parseVeryMuchType(f.Value.String())",
-      "parser_cast": "[]float64(parsed)"
-    }
-
-The meaning of each field is as follows:
-
-               name (string) - The type "name", which will be suffixed with
-                               `Flag` when generating the type definition
-                               for `cli` and the wrapper type for `altsrc`
-               type (string) - The type that the generated `Flag` type for `cli`
-                               is expected to "contain" as its `.Value` member
-                value (bool) - Should the generated `cli` type have a `Value`
-                               member?
-                 dest (bool) - Should the generated `cli` type support a
-                               destination pointer?
-            doctail (string) - Additional docs for the `cli` flag type comment
-       context_type (string) - The literal type used in the `*cli.Context`
-                               reader func signature
-    context_default (string) - The literal value used as the default by the
-                               `*cli.Context` reader funcs when no value is
-                               present
-             parser (string) - Literal code used to parse the flag `f`,
-                               expected to have a return signature of
-                               (value, error)
-        parser_cast (string) - Literal code used to cast the `parsed` value
-                               returned from the `parser` code
-"""
-
-from __future__ import print_function, unicode_literals
-
-import argparse
-import json
-import os
-import subprocess
-import sys
-import tempfile
-import textwrap
-
-
-class _FancyFormatter(argparse.ArgumentDefaultsHelpFormatter,
-                      argparse.RawDescriptionHelpFormatter):
-    pass
-
-
-def main(sysargs=sys.argv[:]):
-    parser = argparse.ArgumentParser(
-        description='Generate flag type code!',
-        formatter_class=_FancyFormatter)
-    parser.add_argument(
-        'package',
-        type=str, default='cli', choices=_WRITEFUNCS.keys(),
-        help='Package for which flag types will be generated'
-    )
-    parser.add_argument(
-        '-i', '--in-json',
-        type=argparse.FileType('r'),
-        default=sys.stdin,
-        help='Input JSON file which defines each type to be generated'
-    )
-    parser.add_argument(
-        '-o', '--out-go',
-        type=argparse.FileType('w'),
-        default=sys.stdout,
-        help='Output file/stream to which generated source will be written'
-    )
-    parser.epilog = __doc__
-
-    args = parser.parse_args(sysargs[1:])
-    _generate_flag_types(_WRITEFUNCS[args.package], args.out_go, args.in_json)
-    return 0
-
-
-def _generate_flag_types(writefunc, output_go, input_json):
-    types = json.load(input_json)
-
-    tmp = tempfile.NamedTemporaryFile(suffix='.go', delete=False)
-    writefunc(tmp, types)
-    tmp.close()
-
-    new_content = subprocess.check_output(
-        ['goimports', tmp.name]
-    ).decode('utf-8')
-
-    print(new_content, file=output_go, end='')
-    output_go.flush()
-    os.remove(tmp.name)
-
-
-def _set_typedef_defaults(typedef):
-    typedef.setdefault('doctail', '')
-    typedef.setdefault('context_type', typedef['type'])
-    typedef.setdefault('dest', True)
-    typedef.setdefault('value', True)
-    typedef.setdefault('parser', 'f.Value, error(nil)')
-    typedef.setdefault('parser_cast', 'parsed')
-
-
-def _write_cli_flag_types(outfile, types):
-    _fwrite(outfile, """\
-        package cli
-
-        // WARNING: This file is generated!
-
-        """)
-
-    for typedef in types:
-        _set_typedef_defaults(typedef)
-
-        _fwrite(outfile, """\
-        // {name}Flag is a flag with type {type}{doctail}
-        type {name}Flag struct {{
-            Name string
-            Usage string
-            EnvVar string
-            Hidden bool
-        """.format(**typedef))
-
-        if typedef['value']:
-            _fwrite(outfile, """\
-            Value {type}
-            """.format(**typedef))
-
-        if typedef['dest']:
-            _fwrite(outfile, """\
-            Destination *{type}
-            """.format(**typedef))
-
-        _fwrite(outfile, "\n}\n\n")
-
-        _fwrite(outfile, """\
-            // String returns a readable representation of this value
-            // (for usage defaults)
-            func (f {name}Flag) String() string {{
-                return FlagStringer(f)
-            }}
-
-            // GetName returns the name of the flag
-            func (f {name}Flag) GetName() string {{
-                return f.Name
-            }}
-
-            // {name} looks up the value of a local {name}Flag, returns
-            // {context_default} if not found
-            func (c *Context) {name}(name string) {context_type} {{
-                return lookup{name}(name, c.flagSet)
-            }}
-
-            // Global{name} looks up the value of a global {name}Flag, returns
-            // {context_default} if not found
-            func (c *Context) Global{name}(name string) {context_type} {{
-                if fs := lookupGlobalFlagSet(name, c); fs != nil {{
-                    return lookup{name}(name, fs)
-                }}
-                return {context_default}
-            }}
-
-            func lookup{name}(name string, set *flag.FlagSet) {context_type} {{
-                f := set.Lookup(name)
-                if f != nil {{
-                    parsed, err := {parser}
-                    if err != nil {{
-                        return {context_default}
-                    }}
-                    return {parser_cast}
-                }}
-                return {context_default}
-            }}
-            """.format(**typedef))
-
-
-def _write_altsrc_flag_types(outfile, types):
-    _fwrite(outfile, """\
-        package altsrc
-
-        import (
-            "gopkg.in/urfave/cli.v1"
-        )
-
-        // WARNING: This file is generated!
-
-        """)
-
-    for typedef in types:
-        _set_typedef_defaults(typedef)
-
-        _fwrite(outfile, """\
-        // {name}Flag is the flag type that wraps cli.{name}Flag to allow
-        // for other values to be specified
-        type {name}Flag struct {{
-            cli.{name}Flag
-            set *flag.FlagSet
-        }}
-
-        // New{name}Flag creates a new {name}Flag
-        func New{name}Flag(fl cli.{name}Flag) *{name}Flag {{
-            return &{name}Flag{{{name}Flag: fl, set: nil}}
-        }}
-
-        // Apply saves the flagSet for later usage calls, then calls the
-        // wrapped {name}Flag.Apply
-        func (f *{name}Flag) Apply(set *flag.FlagSet) {{
-            f.set = set
-            f.{name}Flag.Apply(set)
-        }}
-
-        // ApplyWithError saves the flagSet for later usage calls, then calls the
-        // wrapped {name}Flag.ApplyWithError
-        func (f *{name}Flag) ApplyWithError(set *flag.FlagSet) error {{
-            f.set = set
-            return f.{name}Flag.ApplyWithError(set)
-        }}
-        """.format(**typedef))
-
-
-def _fwrite(outfile, text):
-    print(textwrap.dedent(text), end='', file=outfile)
-
-
-_WRITEFUNCS = {
-    'cli': _write_cli_flag_types,
-    'altsrc': _write_altsrc_flag_types
-}
-
-if __name__ == '__main__':
-    sys.exit(main())

vendor/github.com/urfave/cli/help.go

@@ -1,294 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"strings"
-	"text/tabwriter"
-	"text/template"
-)
-
-// AppHelpTemplate is the text template for the Default help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var AppHelpTemplate = `NAME:
-   {{.Name}}{{if .Usage}} - {{.Usage}}{{end}}
-
-USAGE:
-   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}}
-
-VERSION:
-   {{.Version}}{{end}}{{end}}{{if .Description}}
-
-DESCRIPTION:
-   {{.Description}}{{end}}{{if len .Authors}}
-
-AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}:
-   {{range $index, $author := .Authors}}{{if $index}}
-   {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}}
-
-COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-   {{.Name}}:{{end}}{{range .VisibleCommands}}
-     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
-
-GLOBAL OPTIONS:
-   {{range $index, $option := .VisibleFlags}}{{if $index}}
-   {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}}
-
-COPYRIGHT:
-   {{.Copyright}}{{end}}
-`
-
-// CommandHelpTemplate is the text template for the command help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var CommandHelpTemplate = `NAME:
-   {{.HelpName}} - {{.Usage}}
-
-USAGE:
-   {{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{if .Category}}
-
-CATEGORY:
-   {{.Category}}{{end}}{{if .Description}}
-
-DESCRIPTION:
-   {{.Description}}{{end}}{{if .VisibleFlags}}
-
-OPTIONS:
-   {{range .VisibleFlags}}{{.}}
-   {{end}}{{end}}
-`
-
-// SubcommandHelpTemplate is the text template for the subcommand help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var SubcommandHelpTemplate = `NAME:
-   {{.HelpName}} - {{.Usage}}
-
-USAGE:
-   {{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}
-
-COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-   {{.Name}}:{{end}}{{range .VisibleCommands}}
-     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}
-{{end}}{{if .VisibleFlags}}
-OPTIONS:
-   {{range .VisibleFlags}}{{.}}
-   {{end}}{{end}}
-`
-
-var helpCommand = Command{
-	Name:      "help",
-	Aliases:   []string{"h"},
-	Usage:     "Shows a list of commands or help for one command",
-	ArgsUsage: "[command]",
-	Action: func(c *Context) error {
-		args := c.Args()
-		if args.Present() {
-			return ShowCommandHelp(c, args.First())
-		}
-
-		ShowAppHelp(c)
-		return nil
-	},
-}
-
-var helpSubcommand = Command{
-	Name:      "help",
-	Aliases:   []string{"h"},
-	Usage:     "Shows a list of commands or help for one command",
-	ArgsUsage: "[command]",
-	Action: func(c *Context) error {
-		args := c.Args()
-		if args.Present() {
-			return ShowCommandHelp(c, args.First())
-		}
-
-		return ShowSubcommandHelp(c)
-	},
-}
-
-// Prints help for the App or Command
-type helpPrinter func(w io.Writer, templ string, data interface{})
-
-// HelpPrinter is a function that writes the help output. If not set a default
-// is used. The function signature is:
-// func(w io.Writer, templ string, data interface{})
-var HelpPrinter helpPrinter = printHelp
-
-// VersionPrinter prints the version for the App
-var VersionPrinter = printVersion
-
-// ShowAppHelp is an action that displays the help.
-func ShowAppHelp(c *Context) error {
-	HelpPrinter(c.App.Writer, AppHelpTemplate, c.App)
-	return nil
-}
-
-// DefaultAppComplete prints the list of subcommands as the default app completion method
-func DefaultAppComplete(c *Context) {
-	for _, command := range c.App.Commands {
-		if command.Hidden {
-			continue
-		}
-		for _, name := range command.Names() {
-			fmt.Fprintln(c.App.Writer, name)
-		}
-	}
-}
-
-// ShowCommandHelp prints help for the given command
-func ShowCommandHelp(ctx *Context, command string) error {
-	// show the subcommand help for a command with subcommands
-	if command == "" {
-		HelpPrinter(ctx.App.Writer, SubcommandHelpTemplate, ctx.App)
-		return nil
-	}
-
-	for _, c := range ctx.App.Commands {
-		if c.HasName(command) {
-			HelpPrinter(ctx.App.Writer, CommandHelpTemplate, c)
-			return nil
-		}
-	}
-
-	if ctx.App.CommandNotFound == nil {
-		return NewExitError(fmt.Sprintf("No help topic for '%v'", command), 3)
-	}
-
-	ctx.App.CommandNotFound(ctx, command)
-	return nil
-}
-
-// ShowSubcommandHelp prints help for the given subcommand
-func ShowSubcommandHelp(c *Context) error {
-	return ShowCommandHelp(c, c.Command.Name)
-}
-
-// ShowVersion prints the version number of the App
-func ShowVersion(c *Context) {
-	VersionPrinter(c)
-}
-
-func printVersion(c *Context) {
-	fmt.Fprintf(c.App.Writer, "%v version %v\n", c.App.Name, c.App.Version)
-}
-
-// ShowCompletions prints the lists of commands within a given context
-func ShowCompletions(c *Context) {
-	a := c.App
-	if a != nil && a.BashComplete != nil {
-		a.BashComplete(c)
-	}
-}
-
-// ShowCommandCompletions prints the custom completions for a given command
-func ShowCommandCompletions(ctx *Context, command string) {
-	c := ctx.App.Command(command)
-	if c != nil && c.BashComplete != nil {
-		c.BashComplete(ctx)
-	}
-}
-
-func printHelp(out io.Writer, templ string, data interface{}) {
-	funcMap := template.FuncMap{
-		"join": strings.Join,
-	}
-
-	w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0)
-	t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
-	err := t.Execute(w, data)
-	if err != nil {
-		// If the writer is closed, t.Execute will fail, and there's nothing
-		// we can do to recover.
-		if os.Getenv("CLI_TEMPLATE_ERROR_DEBUG") != "" {
-			fmt.Fprintf(ErrWriter, "CLI TEMPLATE ERROR: %#v\n", err)
-		}
-		return
-	}
-	w.Flush()
-}
-
-func checkVersion(c *Context) bool {
-	found := false
-	if VersionFlag.Name != "" {
-		eachName(VersionFlag.Name, func(name string) {
-			if c.GlobalBool(name) || c.Bool(name) {
-				found = true
-			}
-		})
-	}
-	return found
-}
-
-func checkHelp(c *Context) bool {
-	found := false
-	if HelpFlag.Name != "" {
-		eachName(HelpFlag.Name, func(name string) {
-			if c.GlobalBool(name) || c.Bool(name) {
-				found = true
-			}
-		})
-	}
-	return found
-}
-
-func checkCommandHelp(c *Context, name string) bool {
-	if c.Bool("h") || c.Bool("help") {
-		ShowCommandHelp(c, name)
-		return true
-	}
-
-	return false
-}
-
-func checkSubcommandHelp(c *Context) bool {
-	if c.Bool("h") || c.Bool("help") {
-		ShowSubcommandHelp(c)
-		return true
-	}
-
-	return false
-}
-
-func checkShellCompleteFlag(a *App, arguments []string) (bool, []string) {
-	if !a.EnableBashCompletion {
-		return false, arguments
-	}
-
-	pos := len(arguments) - 1
-	lastArg := arguments[pos]
-
-	if lastArg != "--"+BashCompletionFlag.Name {
-		return false, arguments
-	}
-
-	return true, arguments[:pos]
-}
-
-func checkCompletions(c *Context) bool {
-	if !c.shellComplete {
-		return false
-	}
-
-	if args := c.Args(); args.Present() {
-		name := args.First()
-		if cmd := c.App.Command(name); cmd != nil {
-			// let the command handle the completion
-			return false
-		}
-	}
-
-	ShowCompletions(c)
-	return true
-}
-
-func checkCommandCompletions(c *Context, name string) bool {
-	if !c.shellComplete {
-		return false
-	}
-
-	ShowCommandCompletions(c, name)
-	return true
-}

vendor/github.com/urfave/cli/runtests

@@ -1,122 +0,0 @@
-#!/usr/bin/env python
-from __future__ import print_function
-
-import argparse
-import os
-import sys
-import tempfile
-
-from subprocess import check_call, check_output
-
-
-PACKAGE_NAME = os.environ.get(
-    'CLI_PACKAGE_NAME', 'github.com/urfave/cli'
-)
-
-
-def main(sysargs=sys.argv[:]):
-    targets = {
-        'vet': _vet,
-        'test': _test,
-        'gfmrun': _gfmrun,
-        'toc': _toc,
-        'gen': _gen,
-    }
-
-    parser = argparse.ArgumentParser()
-    parser.add_argument(
-        'target', nargs='?', choices=tuple(targets.keys()), default='test'
-    )
-    args = parser.parse_args(sysargs[1:])
-
-    targets[args.target]()
-    return 0
-
-
-def _test():
-    if check_output('go version'.split()).split()[2] < 'go1.2':
-        _run('go test -v .')
-        return
-
-    coverprofiles = []
-    for subpackage in ['', 'altsrc']:
-        coverprofile = 'cli.coverprofile'
-        if subpackage != '':
-            coverprofile = '{}.coverprofile'.format(subpackage)
-
-        coverprofiles.append(coverprofile)
-
-        _run('go test -v'.split() + [
-            '-coverprofile={}'.format(coverprofile),
-            ('{}/{}'.format(PACKAGE_NAME, subpackage)).rstrip('/')
-        ])
-
-    combined_name = _combine_coverprofiles(coverprofiles)
-    _run('go tool cover -func={}'.format(combined_name))
-    os.remove(combined_name)
-
-
-def _gfmrun():
-    go_version = check_output('go version'.split()).split()[2]
-    if go_version < 'go1.3':
-        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
-        return
-    _run(['gfmrun', '-c', str(_gfmrun_count()), '-s', 'README.md'])
-
-
-def _vet():
-    _run('go vet ./...')
-
-
-def _toc():
-    _run('node_modules/.bin/markdown-toc -i README.md')
-    _run('git diff --exit-code')
-
-
-def _gen():
-    go_version = check_output('go version'.split()).split()[2]
-    if go_version < 'go1.5':
-        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
-        return
-
-    _run('go generate ./...')
-    _run('git diff --exit-code')
-
-
-def _run(command):
-    if hasattr(command, 'split'):
-        command = command.split()
-    print('runtests: {}'.format(' '.join(command)), file=sys.stderr)
-    check_call(command)
-
-
-def _gfmrun_count():
-    with open('README.md') as infile:
-        lines = infile.read().splitlines()
-        return len(filter(_is_go_runnable, lines))
-
-
-def _is_go_runnable(line):
-    return line.startswith('package main')
-
-
-def _combine_coverprofiles(coverprofiles):
-    combined = tempfile.NamedTemporaryFile(
-        suffix='.coverprofile', delete=False
-    )
-    combined.write('mode: set\n')
-
-    for coverprofile in coverprofiles:
-        with open(coverprofile, 'r') as infile:
-            for line in infile.readlines():
-                if not line.startswith('mode: '):
-                    combined.write(line)
-
-    combined.flush()
-    name = combined.name
-    combined.close()
-    return name
-
-
-if __name__ == '__main__':
-    sys.exit(main())

vendor/golang.org/x/crypto/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/crypto/PATENTS

@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.

vendor/golang.org/x/crypto/curve25519/const_amd64.h

@@ -1,8 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-#define REDMASK51     0x0007FFFFFFFFFFFF

vendor/golang.org/x/crypto/curve25519/const_amd64.s

@@ -1,20 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-// +build amd64,!gccgo,!appengine
-
-// These constants cannot be encoded in non-MOVQ immediates.
-// We access them directly from memory instead.
-
-DATA ·_121666_213(SB)/8, $996687872
-GLOBL ·_121666_213(SB), 8, $8
-
-DATA ·_2P0(SB)/8, $0xFFFFFFFFFFFDA
-GLOBL ·_2P0(SB), 8, $8
-
-DATA ·_2P1234(SB)/8, $0xFFFFFFFFFFFFE
-GLOBL ·_2P1234(SB), 8, $8

vendor/golang.org/x/crypto/curve25519/cswap_amd64.s

@@ -1,88 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-// +build amd64,!gccgo,!appengine
-
-// func cswap(inout *[5]uint64, v uint64)
-TEXT ·cswap(SB),7,$0
-	MOVQ inout+0(FP),DI
-	MOVQ v+8(FP),SI
-
-	CMPQ SI,$1
-	MOVQ 0(DI),SI
-	MOVQ 80(DI),DX
-	MOVQ 8(DI),CX
-	MOVQ 88(DI),R8
-	MOVQ SI,R9
-	CMOVQEQ DX,SI
-	CMOVQEQ R9,DX
-	MOVQ CX,R9
-	CMOVQEQ R8,CX
-	CMOVQEQ R9,R8
-	MOVQ SI,0(DI)
-	MOVQ DX,80(DI)
-	MOVQ CX,8(DI)
-	MOVQ R8,88(DI)
-	MOVQ 16(DI),SI
-	MOVQ 96(DI),DX
-	MOVQ 24(DI),CX
-	MOVQ 104(DI),R8
-	MOVQ SI,R9
-	CMOVQEQ DX,SI
-	CMOVQEQ R9,DX
-	MOVQ CX,R9
-	CMOVQEQ R8,CX
-	CMOVQEQ R9,R8
-	MOVQ SI,16(DI)
-	MOVQ DX,96(DI)
-	MOVQ CX,24(DI)
-	MOVQ R8,104(DI)
-	MOVQ 32(DI),SI
-	MOVQ 112(DI),DX
-	MOVQ 40(DI),CX
-	MOVQ 120(DI),R8
-	MOVQ SI,R9
-	CMOVQEQ DX,SI
-	CMOVQEQ R9,DX
-	MOVQ CX,R9
-	CMOVQEQ R8,CX
-	CMOVQEQ R9,R8
-	MOVQ SI,32(DI)
-	MOVQ DX,112(DI)
-	MOVQ CX,40(DI)
-	MOVQ R8,120(DI)
-	MOVQ 48(DI),SI
-	MOVQ 128(DI),DX
-	MOVQ 56(DI),CX
-	MOVQ 136(DI),R8
-	MOVQ SI,R9
-	CMOVQEQ DX,SI
-	CMOVQEQ R9,DX
-	MOVQ CX,R9
-	CMOVQEQ R8,CX
-	CMOVQEQ R9,R8
-	MOVQ SI,48(DI)
-	MOVQ DX,128(DI)
-	MOVQ CX,56(DI)
-	MOVQ R8,136(DI)
-	MOVQ 64(DI),SI
-	MOVQ 144(DI),DX
-	MOVQ 72(DI),CX
-	MOVQ 152(DI),R8
-	MOVQ SI,R9
-	CMOVQEQ DX,SI
-	CMOVQEQ R9,DX
-	MOVQ CX,R9
-	CMOVQEQ R8,CX
-	CMOVQEQ R9,R8
-	MOVQ SI,64(DI)
-	MOVQ DX,144(DI)
-	MOVQ CX,72(DI)
-	MOVQ R8,152(DI)
-	MOVQ DI,AX
-	MOVQ SI,DX
-	RET

vendor/golang.org/x/crypto/curve25519/curve25519.go

@@ -1,841 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// We have a implementation in amd64 assembly so this code is only run on
-// non-amd64 platforms. The amd64 assembly does not support gccgo.
-// +build !amd64 gccgo appengine
-
-package curve25519
-
-// This code is a port of the public domain, "ref10" implementation of
-// curve25519 from SUPERCOP 20130419 by D. J. Bernstein.
-
-// fieldElement represents an element of the field GF(2^255 - 19). An element
-// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
-// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
-// context.
-type fieldElement [10]int32
-
-func feZero(fe *fieldElement) {
-	for i := range fe {
-		fe[i] = 0
-	}
-}
-
-func feOne(fe *fieldElement) {
-	feZero(fe)
-	fe[0] = 1
-}
-
-func feAdd(dst, a, b *fieldElement) {
-	for i := range dst {
-		dst[i] = a[i] + b[i]
-	}
-}
-
-func feSub(dst, a, b *fieldElement) {
-	for i := range dst {
-		dst[i] = a[i] - b[i]
-	}
-}
-
-func feCopy(dst, src *fieldElement) {
-	for i := range dst {
-		dst[i] = src[i]
-	}
-}
-
-// feCSwap replaces (f,g) with (g,f) if b == 1; replaces (f,g) with (f,g) if b == 0.
-//
-// Preconditions: b in {0,1}.
-func feCSwap(f, g *fieldElement, b int32) {
-	var x fieldElement
-	b = -b
-	for i := range x {
-		x[i] = b & (f[i] ^ g[i])
-	}
-
-	for i := range f {
-		f[i] ^= x[i]
-	}
-	for i := range g {
-		g[i] ^= x[i]
-	}
-}
-
-// load3 reads a 24-bit, little-endian value from in.
-func load3(in []byte) int64 {
-	var r int64
-	r = int64(in[0])
-	r |= int64(in[1]) << 8
-	r |= int64(in[2]) << 16
-	return r
-}
-
-// load4 reads a 32-bit, little-endian value from in.
-func load4(in []byte) int64 {
-	var r int64
-	r = int64(in[0])
-	r |= int64(in[1]) << 8
-	r |= int64(in[2]) << 16
-	r |= int64(in[3]) << 24
-	return r
-}
-
-func feFromBytes(dst *fieldElement, src *[32]byte) {
-	h0 := load4(src[:])
-	h1 := load3(src[4:]) << 6
-	h2 := load3(src[7:]) << 5
-	h3 := load3(src[10:]) << 3
-	h4 := load3(src[13:]) << 2
-	h5 := load4(src[16:])
-	h6 := load3(src[20:]) << 7
-	h7 := load3(src[23:]) << 5
-	h8 := load3(src[26:]) << 4
-	h9 := load3(src[29:]) << 2
-
-	var carry [10]int64
-	carry[9] = (h9 + 1<<24) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	carry[1] = (h1 + 1<<24) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[3] = (h3 + 1<<24) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[5] = (h5 + 1<<24) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	carry[7] = (h7 + 1<<24) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[0] = (h0 + 1<<25) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[2] = (h2 + 1<<25) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[4] = (h4 + 1<<25) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[6] = (h6 + 1<<25) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	carry[8] = (h8 + 1<<25) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	dst[0] = int32(h0)
-	dst[1] = int32(h1)
-	dst[2] = int32(h2)
-	dst[3] = int32(h3)
-	dst[4] = int32(h4)
-	dst[5] = int32(h5)
-	dst[6] = int32(h6)
-	dst[7] = int32(h7)
-	dst[8] = int32(h8)
-	dst[9] = int32(h9)
-}
-
-// feToBytes marshals h to s.
-// Preconditions:
-//   |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Write p=2^255-19; q=floor(h/p).
-// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
-//
-// Proof:
-//   Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
-//   Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
-//
-//   Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
-//   Then 0<y<1.
-//
-//   Write r=h-pq.
-//   Have 0<=r<=p-1=2^255-20.
-//   Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
-//
-//   Write x=r+19(2^-255)r+y.
-//   Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
-//
-//   Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
-//   so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
-func feToBytes(s *[32]byte, h *fieldElement) {
-	var carry [10]int32
-
-	q := (19*h[9] + (1 << 24)) >> 25
-	q = (h[0] + q) >> 26
-	q = (h[1] + q) >> 25
-	q = (h[2] + q) >> 26
-	q = (h[3] + q) >> 25
-	q = (h[4] + q) >> 26
-	q = (h[5] + q) >> 25
-	q = (h[6] + q) >> 26
-	q = (h[7] + q) >> 25
-	q = (h[8] + q) >> 26
-	q = (h[9] + q) >> 25
-
-	// Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
-	h[0] += 19 * q
-	// Goal: Output h-2^255 q, which is between 0 and 2^255-20.
-
-	carry[0] = h[0] >> 26
-	h[1] += carry[0]
-	h[0] -= carry[0] << 26
-	carry[1] = h[1] >> 25
-	h[2] += carry[1]
-	h[1] -= carry[1] << 25
-	carry[2] = h[2] >> 26
-	h[3] += carry[2]
-	h[2] -= carry[2] << 26
-	carry[3] = h[3] >> 25
-	h[4] += carry[3]
-	h[3] -= carry[3] << 25
-	carry[4] = h[4] >> 26
-	h[5] += carry[4]
-	h[4] -= carry[4] << 26
-	carry[5] = h[5] >> 25
-	h[6] += carry[5]
-	h[5] -= carry[5] << 25
-	carry[6] = h[6] >> 26
-	h[7] += carry[6]
-	h[6] -= carry[6] << 26
-	carry[7] = h[7] >> 25
-	h[8] += carry[7]
-	h[7] -= carry[7] << 25
-	carry[8] = h[8] >> 26
-	h[9] += carry[8]
-	h[8] -= carry[8] << 26
-	carry[9] = h[9] >> 25
-	h[9] -= carry[9] << 25
-	// h10 = carry9
-
-	// Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
-	// Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
-	// evidently 2^255 h10-2^255 q = 0.
-	// Goal: Output h[0]+...+2^230 h[9].
-
-	s[0] = byte(h[0] >> 0)
-	s[1] = byte(h[0] >> 8)
-	s[2] = byte(h[0] >> 16)
-	s[3] = byte((h[0] >> 24) | (h[1] << 2))
-	s[4] = byte(h[1] >> 6)
-	s[5] = byte(h[1] >> 14)
-	s[6] = byte((h[1] >> 22) | (h[2] << 3))
-	s[7] = byte(h[2] >> 5)
-	s[8] = byte(h[2] >> 13)
-	s[9] = byte((h[2] >> 21) | (h[3] << 5))
-	s[10] = byte(h[3] >> 3)
-	s[11] = byte(h[3] >> 11)
-	s[12] = byte((h[3] >> 19) | (h[4] << 6))
-	s[13] = byte(h[4] >> 2)
-	s[14] = byte(h[4] >> 10)
-	s[15] = byte(h[4] >> 18)
-	s[16] = byte(h[5] >> 0)
-	s[17] = byte(h[5] >> 8)
-	s[18] = byte(h[5] >> 16)
-	s[19] = byte((h[5] >> 24) | (h[6] << 1))
-	s[20] = byte(h[6] >> 7)
-	s[21] = byte(h[6] >> 15)
-	s[22] = byte((h[6] >> 23) | (h[7] << 3))
-	s[23] = byte(h[7] >> 5)
-	s[24] = byte(h[7] >> 13)
-	s[25] = byte((h[7] >> 21) | (h[8] << 4))
-	s[26] = byte(h[8] >> 4)
-	s[27] = byte(h[8] >> 12)
-	s[28] = byte((h[8] >> 20) | (h[9] << 6))
-	s[29] = byte(h[9] >> 2)
-	s[30] = byte(h[9] >> 10)
-	s[31] = byte(h[9] >> 18)
-}
-
-// feMul calculates h = f * g
-// Can overlap h with f or g.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//    |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Notes on implementation strategy:
-//
-// Using schoolbook multiplication.
-// Karatsuba would save a little in some cost models.
-//
-// Most multiplications by 2 and 19 are 32-bit precomputations;
-// cheaper than 64-bit postcomputations.
-//
-// There is one remaining multiplication by 19 in the carry chain;
-// one *19 precomputation can be merged into this,
-// but the resulting data flow is considerably less clean.
-//
-// There are 12 carries below.
-// 10 of them are 2-way parallelizable and vectorizable.
-// Can get away with 11 carries, but then data flow is much deeper.
-//
-// With tighter constraints on inputs can squeeze carries into int32.
-func feMul(h, f, g *fieldElement) {
-	f0 := f[0]
-	f1 := f[1]
-	f2 := f[2]
-	f3 := f[3]
-	f4 := f[4]
-	f5 := f[5]
-	f6 := f[6]
-	f7 := f[7]
-	f8 := f[8]
-	f9 := f[9]
-	g0 := g[0]
-	g1 := g[1]
-	g2 := g[2]
-	g3 := g[3]
-	g4 := g[4]
-	g5 := g[5]
-	g6 := g[6]
-	g7 := g[7]
-	g8 := g[8]
-	g9 := g[9]
-	g1_19 := 19 * g1 // 1.4*2^29
-	g2_19 := 19 * g2 // 1.4*2^30; still ok
-	g3_19 := 19 * g3
-	g4_19 := 19 * g4
-	g5_19 := 19 * g5
-	g6_19 := 19 * g6
-	g7_19 := 19 * g7
-	g8_19 := 19 * g8
-	g9_19 := 19 * g9
-	f1_2 := 2 * f1
-	f3_2 := 2 * f3
-	f5_2 := 2 * f5
-	f7_2 := 2 * f7
-	f9_2 := 2 * f9
-	f0g0 := int64(f0) * int64(g0)
-	f0g1 := int64(f0) * int64(g1)
-	f0g2 := int64(f0) * int64(g2)
-	f0g3 := int64(f0) * int64(g3)
-	f0g4 := int64(f0) * int64(g4)
-	f0g5 := int64(f0) * int64(g5)
-	f0g6 := int64(f0) * int64(g6)
-	f0g7 := int64(f0) * int64(g7)
-	f0g8 := int64(f0) * int64(g8)
-	f0g9 := int64(f0) * int64(g9)
-	f1g0 := int64(f1) * int64(g0)
-	f1g1_2 := int64(f1_2) * int64(g1)
-	f1g2 := int64(f1) * int64(g2)
-	f1g3_2 := int64(f1_2) * int64(g3)
-	f1g4 := int64(f1) * int64(g4)
-	f1g5_2 := int64(f1_2) * int64(g5)
-	f1g6 := int64(f1) * int64(g6)
-	f1g7_2 := int64(f1_2) * int64(g7)
-	f1g8 := int64(f1) * int64(g8)
-	f1g9_38 := int64(f1_2) * int64(g9_19)
-	f2g0 := int64(f2) * int64(g0)
-	f2g1 := int64(f2) * int64(g1)
-	f2g2 := int64(f2) * int64(g2)
-	f2g3 := int64(f2) * int64(g3)
-	f2g4 := int64(f2) * int64(g4)
-	f2g5 := int64(f2) * int64(g5)
-	f2g6 := int64(f2) * int64(g6)
-	f2g7 := int64(f2) * int64(g7)
-	f2g8_19 := int64(f2) * int64(g8_19)
-	f2g9_19 := int64(f2) * int64(g9_19)
-	f3g0 := int64(f3) * int64(g0)
-	f3g1_2 := int64(f3_2) * int64(g1)
-	f3g2 := int64(f3) * int64(g2)
-	f3g3_2 := int64(f3_2) * int64(g3)
-	f3g4 := int64(f3) * int64(g4)
-	f3g5_2 := int64(f3_2) * int64(g5)
-	f3g6 := int64(f3) * int64(g6)
-	f3g7_38 := int64(f3_2) * int64(g7_19)
-	f3g8_19 := int64(f3) * int64(g8_19)
-	f3g9_38 := int64(f3_2) * int64(g9_19)
-	f4g0 := int64(f4) * int64(g0)
-	f4g1 := int64(f4) * int64(g1)
-	f4g2 := int64(f4) * int64(g2)
-	f4g3 := int64(f4) * int64(g3)
-	f4g4 := int64(f4) * int64(g4)
-	f4g5 := int64(f4) * int64(g5)
-	f4g6_19 := int64(f4) * int64(g6_19)
-	f4g7_19 := int64(f4) * int64(g7_19)
-	f4g8_19 := int64(f4) * int64(g8_19)
-	f4g9_19 := int64(f4) * int64(g9_19)
-	f5g0 := int64(f5) * int64(g0)
-	f5g1_2 := int64(f5_2) * int64(g1)
-	f5g2 := int64(f5) * int64(g2)
-	f5g3_2 := int64(f5_2) * int64(g3)
-	f5g4 := int64(f5) * int64(g4)
-	f5g5_38 := int64(f5_2) * int64(g5_19)
-	f5g6_19 := int64(f5) * int64(g6_19)
-	f5g7_38 := int64(f5_2) * int64(g7_19)
-	f5g8_19 := int64(f5) * int64(g8_19)
-	f5g9_38 := int64(f5_2) * int64(g9_19)
-	f6g0 := int64(f6) * int64(g0)
-	f6g1 := int64(f6) * int64(g1)
-	f6g2 := int64(f6) * int64(g2)
-	f6g3 := int64(f6) * int64(g3)
-	f6g4_19 := int64(f6) * int64(g4_19)
-	f6g5_19 := int64(f6) * int64(g5_19)
-	f6g6_19 := int64(f6) * int64(g6_19)
-	f6g7_19 := int64(f6) * int64(g7_19)
-	f6g8_19 := int64(f6) * int64(g8_19)
-	f6g9_19 := int64(f6) * int64(g9_19)
-	f7g0 := int64(f7) * int64(g0)
-	f7g1_2 := int64(f7_2) * int64(g1)
-	f7g2 := int64(f7) * int64(g2)
-	f7g3_38 := int64(f7_2) * int64(g3_19)
-	f7g4_19 := int64(f7) * int64(g4_19)
-	f7g5_38 := int64(f7_2) * int64(g5_19)
-	f7g6_19 := int64(f7) * int64(g6_19)
-	f7g7_38 := int64(f7_2) * int64(g7_19)
-	f7g8_19 := int64(f7) * int64(g8_19)
-	f7g9_38 := int64(f7_2) * int64(g9_19)
-	f8g0 := int64(f8) * int64(g0)
-	f8g1 := int64(f8) * int64(g1)
-	f8g2_19 := int64(f8) * int64(g2_19)
-	f8g3_19 := int64(f8) * int64(g3_19)
-	f8g4_19 := int64(f8) * int64(g4_19)
-	f8g5_19 := int64(f8) * int64(g5_19)
-	f8g6_19 := int64(f8) * int64(g6_19)
-	f8g7_19 := int64(f8) * int64(g7_19)
-	f8g8_19 := int64(f8) * int64(g8_19)
-	f8g9_19 := int64(f8) * int64(g9_19)
-	f9g0 := int64(f9) * int64(g0)
-	f9g1_38 := int64(f9_2) * int64(g1_19)
-	f9g2_19 := int64(f9) * int64(g2_19)
-	f9g3_38 := int64(f9_2) * int64(g3_19)
-	f9g4_19 := int64(f9) * int64(g4_19)
-	f9g5_38 := int64(f9_2) * int64(g5_19)
-	f9g6_19 := int64(f9) * int64(g6_19)
-	f9g7_38 := int64(f9_2) * int64(g7_19)
-	f9g8_19 := int64(f9) * int64(g8_19)
-	f9g9_38 := int64(f9_2) * int64(g9_19)
-	h0 := f0g0 + f1g9_38 + f2g8_19 + f3g7_38 + f4g6_19 + f5g5_38 + f6g4_19 + f7g3_38 + f8g2_19 + f9g1_38
-	h1 := f0g1 + f1g0 + f2g9_19 + f3g8_19 + f4g7_19 + f5g6_19 + f6g5_19 + f7g4_19 + f8g3_19 + f9g2_19
-	h2 := f0g2 + f1g1_2 + f2g0 + f3g9_38 + f4g8_19 + f5g7_38 + f6g6_19 + f7g5_38 + f8g4_19 + f9g3_38
-	h3 := f0g3 + f1g2 + f2g1 + f3g0 + f4g9_19 + f5g8_19 + f6g7_19 + f7g6_19 + f8g5_19 + f9g4_19
-	h4 := f0g4 + f1g3_2 + f2g2 + f3g1_2 + f4g0 + f5g9_38 + f6g8_19 + f7g7_38 + f8g6_19 + f9g5_38
-	h5 := f0g5 + f1g4 + f2g3 + f3g2 + f4g1 + f5g0 + f6g9_19 + f7g8_19 + f8g7_19 + f9g6_19
-	h6 := f0g6 + f1g5_2 + f2g4 + f3g3_2 + f4g2 + f5g1_2 + f6g0 + f7g9_38 + f8g8_19 + f9g7_38
-	h7 := f0g7 + f1g6 + f2g5 + f3g4 + f4g3 + f5g2 + f6g1 + f7g0 + f8g9_19 + f9g8_19
-	h8 := f0g8 + f1g7_2 + f2g6 + f3g5_2 + f4g4 + f5g3_2 + f6g2 + f7g1_2 + f8g0 + f9g9_38
-	h9 := f0g9 + f1g8 + f2g7 + f3g6 + f4g5 + f5g4 + f6g3 + f7g2 + f8g1 + f9g0
-	var carry [10]int64
-
-	// |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
-	//   i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
-	// |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
-	//   i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	// |h0| <= 2^25
-	// |h4| <= 2^25
-	// |h1| <= 1.51*2^58
-	// |h5| <= 1.51*2^58
-
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	// |h1| <= 2^24; from now on fits into int32
-	// |h5| <= 2^24; from now on fits into int32
-	// |h2| <= 1.21*2^59
-	// |h6| <= 1.21*2^59
-
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	// |h2| <= 2^25; from now on fits into int32 unchanged
-	// |h6| <= 2^25; from now on fits into int32 unchanged
-	// |h3| <= 1.51*2^58
-	// |h7| <= 1.51*2^58
-
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-	// |h3| <= 2^24; from now on fits into int32 unchanged
-	// |h7| <= 2^24; from now on fits into int32 unchanged
-	// |h4| <= 1.52*2^33
-	// |h8| <= 1.52*2^33
-
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-	// |h4| <= 2^25; from now on fits into int32 unchanged
-	// |h8| <= 2^25; from now on fits into int32 unchanged
-	// |h5| <= 1.01*2^24
-	// |h9| <= 1.51*2^58
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	// |h9| <= 2^24; from now on fits into int32 unchanged
-	// |h0| <= 1.8*2^37
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	// |h0| <= 2^25; from now on fits into int32 unchanged
-	// |h1| <= 1.01*2^24
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feSquare calculates h = f*f. Can overlap h with f.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func feSquare(h, f *fieldElement) {
-	f0 := f[0]
-	f1 := f[1]
-	f2 := f[2]
-	f3 := f[3]
-	f4 := f[4]
-	f5 := f[5]
-	f6 := f[6]
-	f7 := f[7]
-	f8 := f[8]
-	f9 := f[9]
-	f0_2 := 2 * f0
-	f1_2 := 2 * f1
-	f2_2 := 2 * f2
-	f3_2 := 2 * f3
-	f4_2 := 2 * f4
-	f5_2 := 2 * f5
-	f6_2 := 2 * f6
-	f7_2 := 2 * f7
-	f5_38 := 38 * f5 // 1.31*2^30
-	f6_19 := 19 * f6 // 1.31*2^30
-	f7_38 := 38 * f7 // 1.31*2^30
-	f8_19 := 19 * f8 // 1.31*2^30
-	f9_38 := 38 * f9 // 1.31*2^30
-	f0f0 := int64(f0) * int64(f0)
-	f0f1_2 := int64(f0_2) * int64(f1)
-	f0f2_2 := int64(f0_2) * int64(f2)
-	f0f3_2 := int64(f0_2) * int64(f3)
-	f0f4_2 := int64(f0_2) * int64(f4)
-	f0f5_2 := int64(f0_2) * int64(f5)
-	f0f6_2 := int64(f0_2) * int64(f6)
-	f0f7_2 := int64(f0_2) * int64(f7)
-	f0f8_2 := int64(f0_2) * int64(f8)
-	f0f9_2 := int64(f0_2) * int64(f9)
-	f1f1_2 := int64(f1_2) * int64(f1)
-	f1f2_2 := int64(f1_2) * int64(f2)
-	f1f3_4 := int64(f1_2) * int64(f3_2)
-	f1f4_2 := int64(f1_2) * int64(f4)
-	f1f5_4 := int64(f1_2) * int64(f5_2)
-	f1f6_2 := int64(f1_2) * int64(f6)
-	f1f7_4 := int64(f1_2) * int64(f7_2)
-	f1f8_2 := int64(f1_2) * int64(f8)
-	f1f9_76 := int64(f1_2) * int64(f9_38)
-	f2f2 := int64(f2) * int64(f2)
-	f2f3_2 := int64(f2_2) * int64(f3)
-	f2f4_2 := int64(f2_2) * int64(f4)
-	f2f5_2 := int64(f2_2) * int64(f5)
-	f2f6_2 := int64(f2_2) * int64(f6)
-	f2f7_2 := int64(f2_2) * int64(f7)
-	f2f8_38 := int64(f2_2) * int64(f8_19)
-	f2f9_38 := int64(f2) * int64(f9_38)
-	f3f3_2 := int64(f3_2) * int64(f3)
-	f3f4_2 := int64(f3_2) * int64(f4)
-	f3f5_4 := int64(f3_2) * int64(f5_2)
-	f3f6_2 := int64(f3_2) * int64(f6)
-	f3f7_76 := int64(f3_2) * int64(f7_38)
-	f3f8_38 := int64(f3_2) * int64(f8_19)
-	f3f9_76 := int64(f3_2) * int64(f9_38)
-	f4f4 := int64(f4) * int64(f4)
-	f4f5_2 := int64(f4_2) * int64(f5)
-	f4f6_38 := int64(f4_2) * int64(f6_19)
-	f4f7_38 := int64(f4) * int64(f7_38)
-	f4f8_38 := int64(f4_2) * int64(f8_19)
-	f4f9_38 := int64(f4) * int64(f9_38)
-	f5f5_38 := int64(f5) * int64(f5_38)
-	f5f6_38 := int64(f5_2) * int64(f6_19)
-	f5f7_76 := int64(f5_2) * int64(f7_38)
-	f5f8_38 := int64(f5_2) * int64(f8_19)
-	f5f9_76 := int64(f5_2) * int64(f9_38)
-	f6f6_19 := int64(f6) * int64(f6_19)
-	f6f7_38 := int64(f6) * int64(f7_38)
-	f6f8_38 := int64(f6_2) * int64(f8_19)
-	f6f9_38 := int64(f6) * int64(f9_38)
-	f7f7_38 := int64(f7) * int64(f7_38)
-	f7f8_38 := int64(f7_2) * int64(f8_19)
-	f7f9_76 := int64(f7_2) * int64(f9_38)
-	f8f8_19 := int64(f8) * int64(f8_19)
-	f8f9_38 := int64(f8) * int64(f9_38)
-	f9f9_38 := int64(f9) * int64(f9_38)
-	h0 := f0f0 + f1f9_76 + f2f8_38 + f3f7_76 + f4f6_38 + f5f5_38
-	h1 := f0f1_2 + f2f9_38 + f3f8_38 + f4f7_38 + f5f6_38
-	h2 := f0f2_2 + f1f1_2 + f3f9_76 + f4f8_38 + f5f7_76 + f6f6_19
-	h3 := f0f3_2 + f1f2_2 + f4f9_38 + f5f8_38 + f6f7_38
-	h4 := f0f4_2 + f1f3_4 + f2f2 + f5f9_76 + f6f8_38 + f7f7_38
-	h5 := f0f5_2 + f1f4_2 + f2f3_2 + f6f9_38 + f7f8_38
-	h6 := f0f6_2 + f1f5_4 + f2f4_2 + f3f3_2 + f7f9_76 + f8f8_19
-	h7 := f0f7_2 + f1f6_2 + f2f5_2 + f3f4_2 + f8f9_38
-	h8 := f0f8_2 + f1f7_4 + f2f6_2 + f3f5_4 + f4f4 + f9f9_38
-	h9 := f0f9_2 + f1f8_2 + f2f7_2 + f3f6_2 + f4f5_2
-	var carry [10]int64
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feMul121666 calculates h = f * 121666. Can overlap h with f.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func feMul121666(h, f *fieldElement) {
-	h0 := int64(f[0]) * 121666
-	h1 := int64(f[1]) * 121666
-	h2 := int64(f[2]) * 121666
-	h3 := int64(f[3]) * 121666
-	h4 := int64(f[4]) * 121666
-	h5 := int64(f[5]) * 121666
-	h6 := int64(f[6]) * 121666
-	h7 := int64(f[7]) * 121666
-	h8 := int64(f[8]) * 121666
-	h9 := int64(f[9]) * 121666
-	var carry [10]int64
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feInvert sets out = z^-1.
-func feInvert(out, z *fieldElement) {
-	var t0, t1, t2, t3 fieldElement
-	var i int
-
-	feSquare(&t0, z)
-	for i = 1; i < 1; i++ {
-		feSquare(&t0, &t0)
-	}
-	feSquare(&t1, &t0)
-	for i = 1; i < 2; i++ {
-		feSquare(&t1, &t1)
-	}
-	feMul(&t1, z, &t1)
-	feMul(&t0, &t0, &t1)
-	feSquare(&t2, &t0)
-	for i = 1; i < 1; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t1, &t2)
-	feSquare(&t2, &t1)
-	for i = 1; i < 5; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t2, &t1)
-	for i = 1; i < 10; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t2, &t2, &t1)
-	feSquare(&t3, &t2)
-	for i = 1; i < 20; i++ {
-		feSquare(&t3, &t3)
-	}
-	feMul(&t2, &t3, &t2)
-	feSquare(&t2, &t2)
-	for i = 1; i < 10; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t2, &t1)
-	for i = 1; i < 50; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t2, &t2, &t1)
-	feSquare(&t3, &t2)
-	for i = 1; i < 100; i++ {
-		feSquare(&t3, &t3)
-	}
-	feMul(&t2, &t3, &t2)
-	feSquare(&t2, &t2)
-	for i = 1; i < 50; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t1, &t1)
-	for i = 1; i < 5; i++ {
-		feSquare(&t1, &t1)
-	}
-	feMul(out, &t1, &t0)
-}
-
-func scalarMult(out, in, base *[32]byte) {
-	var e [32]byte
-
-	copy(e[:], in[:])
-	e[0] &= 248
-	e[31] &= 127
-	e[31] |= 64
-
-	var x1, x2, z2, x3, z3, tmp0, tmp1 fieldElement
-	feFromBytes(&x1, base)
-	feOne(&x2)
-	feCopy(&x3, &x1)
-	feOne(&z3)
-
-	swap := int32(0)
-	for pos := 254; pos >= 0; pos-- {
-		b := e[pos/8] >> uint(pos&7)
-		b &= 1
-		swap ^= int32(b)
-		feCSwap(&x2, &x3, swap)
-		feCSwap(&z2, &z3, swap)
-		swap = int32(b)
-
-		feSub(&tmp0, &x3, &z3)
-		feSub(&tmp1, &x2, &z2)
-		feAdd(&x2, &x2, &z2)
-		feAdd(&z2, &x3, &z3)
-		feMul(&z3, &tmp0, &x2)
-		feMul(&z2, &z2, &tmp1)
-		feSquare(&tmp0, &tmp1)
-		feSquare(&tmp1, &x2)
-		feAdd(&x3, &z3, &z2)
-		feSub(&z2, &z3, &z2)
-		feMul(&x2, &tmp1, &tmp0)
-		feSub(&tmp1, &tmp1, &tmp0)
-		feSquare(&z2, &z2)
-		feMul121666(&z3, &tmp1)
-		feSquare(&x3, &x3)
-		feAdd(&tmp0, &tmp0, &z3)
-		feMul(&z3, &x1, &z2)
-		feMul(&z2, &tmp1, &tmp0)
-	}
-
-	feCSwap(&x2, &x3, swap)
-	feCSwap(&z2, &z3, swap)
-
-	feInvert(&z2, &z2)
-	feMul(&x2, &x2, &z2)
-	feToBytes(out, &x2)
-}

vendor/golang.org/x/crypto/curve25519/doc.go

@@ -1,23 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package curve25519 provides an implementation of scalar multiplication on
-// the elliptic curve known as curve25519. See http://cr.yp.to/ecdh.html
-package curve25519 // import "golang.org/x/crypto/curve25519"
-
-// basePoint is the x coordinate of the generator of the curve.
-var basePoint = [32]byte{9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
-
-// ScalarMult sets dst to the product in*base where dst and base are the x
-// coordinates of group points and all values are in little-endian form.
-func ScalarMult(dst, in, base *[32]byte) {
-	scalarMult(dst, in, base)
-}
-
-// ScalarBaseMult sets dst to the product in*base where dst and base are the x
-// coordinates of group points, base is the standard generator and all values
-// are in little-endian form.
-func ScalarBaseMult(dst, in *[32]byte) {
-	ScalarMult(dst, in, &basePoint)
-}

vendor/golang.org/x/crypto/curve25519/freeze_amd64.s

@@ -1,73 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-// +build amd64,!gccgo,!appengine
-
-#include "const_amd64.h"
-
-// func freeze(inout *[5]uint64)
-TEXT ·freeze(SB),7,$0-8
-	MOVQ inout+0(FP), DI
-
-	MOVQ 0(DI),SI
-	MOVQ 8(DI),DX
-	MOVQ 16(DI),CX
-	MOVQ 24(DI),R8
-	MOVQ 32(DI),R9
-	MOVQ $REDMASK51,AX
-	MOVQ AX,R10
-	SUBQ $18,R10
-	MOVQ $3,R11
-REDUCELOOP:
-	MOVQ SI,R12
-	SHRQ $51,R12
-	ANDQ AX,SI
-	ADDQ R12,DX
-	MOVQ DX,R12
-	SHRQ $51,R12
-	ANDQ AX,DX
-	ADDQ R12,CX
-	MOVQ CX,R12
-	SHRQ $51,R12
-	ANDQ AX,CX
-	ADDQ R12,R8
-	MOVQ R8,R12
-	SHRQ $51,R12
-	ANDQ AX,R8
-	ADDQ R12,R9
-	MOVQ R9,R12
-	SHRQ $51,R12
-	ANDQ AX,R9
-	IMUL3Q $19,R12,R12
-	ADDQ R12,SI
-	SUBQ $1,R11
-	JA REDUCELOOP
-	MOVQ $1,R12
-	CMPQ R10,SI
-	CMOVQLT R11,R12
-	CMPQ AX,DX
-	CMOVQNE R11,R12
-	CMPQ AX,CX
-	CMOVQNE R11,R12
-	CMPQ AX,R8
-	CMOVQNE R11,R12
-	CMPQ AX,R9
-	CMOVQNE R11,R12
-	NEGQ R12
-	ANDQ R12,AX
-	ANDQ R12,R10
-	SUBQ R10,SI
-	SUBQ AX,DX
-	SUBQ AX,CX
-	SUBQ AX,R8
-	SUBQ AX,R9
-	MOVQ SI,0(DI)
-	MOVQ DX,8(DI)
-	MOVQ CX,16(DI)
-	MOVQ R8,24(DI)
-	MOVQ R9,32(DI)
-	RET

vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go

@@ -1,240 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build amd64,!gccgo,!appengine
-
-package curve25519
-
-// These functions are implemented in the .s files. The names of the functions
-// in the rest of the file are also taken from the SUPERCOP sources to help
-// people following along.
-
-//go:noescape
-
-func cswap(inout *[5]uint64, v uint64)
-
-//go:noescape
-
-func ladderstep(inout *[5][5]uint64)
-
-//go:noescape
-
-func freeze(inout *[5]uint64)
-
-//go:noescape
-
-func mul(dest, a, b *[5]uint64)
-
-//go:noescape
-
-func square(out, in *[5]uint64)
-
-// mladder uses a Montgomery ladder to calculate (xr/zr) *= s.
-func mladder(xr, zr *[5]uint64, s *[32]byte) {
-	var work [5][5]uint64
-
-	work[0] = *xr
-	setint(&work[1], 1)
-	setint(&work[2], 0)
-	work[3] = *xr
-	setint(&work[4], 1)
-
-	j := uint(6)
-	var prevbit byte
-
-	for i := 31; i >= 0; i-- {
-		for j < 8 {
-			bit := ((*s)[i] >> j) & 1
-			swap := bit ^ prevbit
-			prevbit = bit
-			cswap(&work[1], uint64(swap))
-			ladderstep(&work)
-			j--
-		}
-		j = 7
-	}
-
-	*xr = work[1]
-	*zr = work[2]
-}
-
-func scalarMult(out, in, base *[32]byte) {
-	var e [32]byte
-	copy(e[:], (*in)[:])
-	e[0] &= 248
-	e[31] &= 127
-	e[31] |= 64
-
-	var t, z [5]uint64
-	unpack(&t, base)
-	mladder(&t, &z, &e)
-	invert(&z, &z)
-	mul(&t, &t, &z)
-	pack(out, &t)
-}
-
-func setint(r *[5]uint64, v uint64) {
-	r[0] = v
-	r[1] = 0
-	r[2] = 0
-	r[3] = 0
-	r[4] = 0
-}
-
-// unpack sets r = x where r consists of 5, 51-bit limbs in little-endian
-// order.
-func unpack(r *[5]uint64, x *[32]byte) {
-	r[0] = uint64(x[0]) |
-		uint64(x[1])<<8 |
-		uint64(x[2])<<16 |
-		uint64(x[3])<<24 |
-		uint64(x[4])<<32 |
-		uint64(x[5])<<40 |
-		uint64(x[6]&7)<<48
-
-	r[1] = uint64(x[6])>>3 |
-		uint64(x[7])<<5 |
-		uint64(x[8])<<13 |
-		uint64(x[9])<<21 |
-		uint64(x[10])<<29 |
-		uint64(x[11])<<37 |
-		uint64(x[12]&63)<<45
-
-	r[2] = uint64(x[12])>>6 |
-		uint64(x[13])<<2 |
-		uint64(x[14])<<10 |
-		uint64(x[15])<<18 |
-		uint64(x[16])<<26 |
-		uint64(x[17])<<34 |
-		uint64(x[18])<<42 |
-		uint64(x[19]&1)<<50
-
-	r[3] = uint64(x[19])>>1 |
-		uint64(x[20])<<7 |
-		uint64(x[21])<<15 |
-		uint64(x[22])<<23 |
-		uint64(x[23])<<31 |
-		uint64(x[24])<<39 |
-		uint64(x[25]&15)<<47
-
-	r[4] = uint64(x[25])>>4 |
-		uint64(x[26])<<4 |
-		uint64(x[27])<<12 |
-		uint64(x[28])<<20 |
-		uint64(x[29])<<28 |
-		uint64(x[30])<<36 |
-		uint64(x[31]&127)<<44
-}
-
-// pack sets out = x where out is the usual, little-endian form of the 5,
-// 51-bit limbs in x.
-func pack(out *[32]byte, x *[5]uint64) {
-	t := *x
-	freeze(&t)
-
-	out[0] = byte(t[0])
-	out[1] = byte(t[0] >> 8)
-	out[2] = byte(t[0] >> 16)
-	out[3] = byte(t[0] >> 24)
-	out[4] = byte(t[0] >> 32)
-	out[5] = byte(t[0] >> 40)
-	out[6] = byte(t[0] >> 48)
-
-	out[6] ^= byte(t[1]<<3) & 0xf8
-	out[7] = byte(t[1] >> 5)
-	out[8] = byte(t[1] >> 13)
-	out[9] = byte(t[1] >> 21)
-	out[10] = byte(t[1] >> 29)
-	out[11] = byte(t[1] >> 37)
-	out[12] = byte(t[1] >> 45)
-
-	out[12] ^= byte(t[2]<<6) & 0xc0
-	out[13] = byte(t[2] >> 2)
-	out[14] = byte(t[2] >> 10)
-	out[15] = byte(t[2] >> 18)
-	out[16] = byte(t[2] >> 26)
-	out[17] = byte(t[2] >> 34)
-	out[18] = byte(t[2] >> 42)
-	out[19] = byte(t[2] >> 50)
-
-	out[19] ^= byte(t[3]<<1) & 0xfe
-	out[20] = byte(t[3] >> 7)
-	out[21] = byte(t[3] >> 15)
-	out[22] = byte(t[3] >> 23)
-	out[23] = byte(t[3] >> 31)
-	out[24] = byte(t[3] >> 39)
-	out[25] = byte(t[3] >> 47)
-
-	out[25] ^= byte(t[4]<<4) & 0xf0
-	out[26] = byte(t[4] >> 4)
-	out[27] = byte(t[4] >> 12)
-	out[28] = byte(t[4] >> 20)
-	out[29] = byte(t[4] >> 28)
-	out[30] = byte(t[4] >> 36)
-	out[31] = byte(t[4] >> 44)
-}
-
-// invert calculates r = x^-1 mod p using Fermat's little theorem.
-func invert(r *[5]uint64, x *[5]uint64) {
-	var z2, z9, z11, z2_5_0, z2_10_0, z2_20_0, z2_50_0, z2_100_0, t [5]uint64
-
-	square(&z2, x)        /* 2 */
-	square(&t, &z2)       /* 4 */
-	square(&t, &t)        /* 8 */
-	mul(&z9, &t, x)       /* 9 */
-	mul(&z11, &z9, &z2)   /* 11 */
-	square(&t, &z11)      /* 22 */
-	mul(&z2_5_0, &t, &z9) /* 2^5 - 2^0 = 31 */
-
-	square(&t, &z2_5_0)      /* 2^6 - 2^1 */
-	for i := 1; i < 5; i++ { /* 2^20 - 2^10 */
-		square(&t, &t)
-	}
-	mul(&z2_10_0, &t, &z2_5_0) /* 2^10 - 2^0 */
-
-	square(&t, &z2_10_0)      /* 2^11 - 2^1 */
-	for i := 1; i < 10; i++ { /* 2^20 - 2^10 */
-		square(&t, &t)
-	}
-	mul(&z2_20_0, &t, &z2_10_0) /* 2^20 - 2^0 */
-
-	square(&t, &z2_20_0)      /* 2^21 - 2^1 */
-	for i := 1; i < 20; i++ { /* 2^40 - 2^20 */
-		square(&t, &t)
-	}
-	mul(&t, &t, &z2_20_0) /* 2^40 - 2^0 */
-
-	square(&t, &t)            /* 2^41 - 2^1 */
-	for i := 1; i < 10; i++ { /* 2^50 - 2^10 */
-		square(&t, &t)
-	}
-	mul(&z2_50_0, &t, &z2_10_0) /* 2^50 - 2^0 */
-
-	square(&t, &z2_50_0)      /* 2^51 - 2^1 */
-	for i := 1; i < 50; i++ { /* 2^100 - 2^50 */
-		square(&t, &t)
-	}
-	mul(&z2_100_0, &t, &z2_50_0) /* 2^100 - 2^0 */
-
-	square(&t, &z2_100_0)      /* 2^101 - 2^1 */
-	for i := 1; i < 100; i++ { /* 2^200 - 2^100 */
-		square(&t, &t)
-	}
-	mul(&t, &t, &z2_100_0) /* 2^200 - 2^0 */
-
-	square(&t, &t)            /* 2^201 - 2^1 */
-	for i := 1; i < 50; i++ { /* 2^250 - 2^50 */
-		square(&t, &t)
-	}
-	mul(&t, &t, &z2_50_0) /* 2^250 - 2^0 */
-
-	square(&t, &t) /* 2^251 - 2^1 */
-	square(&t, &t) /* 2^252 - 2^2 */
-	square(&t, &t) /* 2^253 - 2^3 */
-
-	square(&t, &t) /* 2^254 - 2^4 */
-
-	square(&t, &t)   /* 2^255 - 2^5 */
-	mul(r, &t, &z11) /* 2^255 - 21 */
-}

vendor/golang.org/x/crypto/curve25519/mul_amd64.s

@@ -1,169 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-// +build amd64,!gccgo,!appengine
-
-#include "const_amd64.h"
-
-// func mul(dest, a, b *[5]uint64)
-TEXT ·mul(SB),0,$16-24
-	MOVQ dest+0(FP), DI
-	MOVQ a+8(FP), SI
-	MOVQ b+16(FP), DX
-
-	MOVQ DX,CX
-	MOVQ 24(SI),DX
-	IMUL3Q $19,DX,AX
-	MOVQ AX,0(SP)
-	MULQ 16(CX)
-	MOVQ AX,R8
-	MOVQ DX,R9
-	MOVQ 32(SI),DX
-	IMUL3Q $19,DX,AX
-	MOVQ AX,8(SP)
-	MULQ 8(CX)
-	ADDQ AX,R8
-	ADCQ DX,R9
-	MOVQ 0(SI),AX
-	MULQ 0(CX)
-	ADDQ AX,R8
-	ADCQ DX,R9
-	MOVQ 0(SI),AX
-	MULQ 8(CX)
-	MOVQ AX,R10
-	MOVQ DX,R11
-	MOVQ 0(SI),AX
-	MULQ 16(CX)
-	MOVQ AX,R12
-	MOVQ DX,R13
-	MOVQ 0(SI),AX
-	MULQ 24(CX)
-	MOVQ AX,R14
-	MOVQ DX,R15
-	MOVQ 0(SI),AX
-	MULQ 32(CX)
-	MOVQ AX,BX
-	MOVQ DX,BP
-	MOVQ 8(SI),AX
-	MULQ 0(CX)
-	ADDQ AX,R10
-	ADCQ DX,R11
-	MOVQ 8(SI),AX
-	MULQ 8(CX)
-	ADDQ AX,R12
-	ADCQ DX,R13
-	MOVQ 8(SI),AX
-	MULQ 16(CX)
-	ADDQ AX,R14
-	ADCQ DX,R15
-	MOVQ 8(SI),AX
-	MULQ 24(CX)
-	ADDQ AX,BX
-	ADCQ DX,BP
-	MOVQ 8(SI),DX
-	IMUL3Q $19,DX,AX
-	MULQ 32(CX)
-	ADDQ AX,R8
-	ADCQ DX,R9
-	MOVQ 16(SI),AX
-	MULQ 0(CX)
-	ADDQ AX,R12
-	ADCQ DX,R13
-	MOVQ 16(SI),AX
-	MULQ 8(CX)
-	ADDQ AX,R14
-	ADCQ DX,R15
-	MOVQ 16(SI),AX
-	MULQ 16(CX)
-	ADDQ AX,BX
-	ADCQ DX,BP
-	MOVQ 16(SI),DX
-	IMUL3Q $19,DX,AX
-	MULQ 24(CX)
-	ADDQ AX,R8
-	ADCQ DX,R9
-	MOVQ 16(SI),DX
-	IMUL3Q $19,DX,AX
-	MULQ 32(CX)
-	ADDQ AX,R10
-	ADCQ DX,R11
-	MOVQ 24(SI),AX
-	MULQ 0(CX)
-	ADDQ AX,R14
-	ADCQ DX,R15
-	MOVQ 24(SI),AX
-	MULQ 8(CX)
-	ADDQ AX,BX
-	ADCQ DX,BP
-	MOVQ 0(SP),AX
-	MULQ 24(CX)
-	ADDQ AX,R10
-	ADCQ DX,R11
-	MOVQ 0(SP),AX
-	MULQ 32(CX)
-	ADDQ AX,R12
-	ADCQ DX,R13
-	MOVQ 32(SI),AX
-	MULQ 0(CX)
-	ADDQ AX,BX
-	ADCQ DX,BP
-	MOVQ 8(SP),AX
-	MULQ 16(CX)
-	ADDQ AX,R10
-	ADCQ DX,R11
-	MOVQ 8(SP),AX
-	MULQ 24(CX)
-	ADDQ AX,R12
-	ADCQ DX,R13
-	MOVQ 8(SP),AX
-	MULQ 32(CX)
-	ADDQ AX,R14
-	ADCQ DX,R15
-	MOVQ $REDMASK51,SI
-	SHLQ $13,R9:R8
-	ANDQ SI,R8
-	SHLQ $13,R11:R10
-	ANDQ SI,R10
-	ADDQ R9,R10
-	SHLQ $13,R13:R12
-	ANDQ SI,R12
-	ADDQ R11,R12
-	SHLQ $13,R15:R14
-	ANDQ SI,R14
-	ADDQ R13,R14
-	SHLQ $13,BP:BX
-	ANDQ SI,BX
-	ADDQ R15,BX
-	IMUL3Q $19,BP,DX
-	ADDQ DX,R8
-	MOVQ R8,DX
-	SHRQ $51,DX
-	ADDQ R10,DX
-	MOVQ DX,CX
-	SHRQ $51,DX
-	ANDQ SI,R8
-	ADDQ R12,DX
-	MOVQ DX,R9
-	SHRQ $51,DX
-	ANDQ SI,CX
-	ADDQ R14,DX
-	MOVQ DX,AX
-	SHRQ $51,DX
-	ANDQ SI,R9
-	ADDQ BX,DX
-	MOVQ DX,R10
-	SHRQ $51,DX
-	ANDQ SI,AX
-	IMUL3Q $19,DX,DX
-	ADDQ DX,R8
-	ANDQ SI,R10
-	MOVQ R8,0(DI)
-	MOVQ CX,8(DI)
-	MOVQ R9,16(DI)
-	MOVQ AX,24(DI)
-	MOVQ R10,32(DI)
-	RET

vendor/golang.org/x/crypto/curve25519/square_amd64.s

@@ -1,132 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
-
-// +build amd64,!gccgo,!appengine
-
-#include "const_amd64.h"
-
-// func square(out, in *[5]uint64)
-TEXT ·square(SB),7,$0-16
-	MOVQ out+0(FP), DI
-	MOVQ in+8(FP), SI
-
-	MOVQ 0(SI),AX
-	MULQ 0(SI)
-	MOVQ AX,CX
-	MOVQ DX,R8
-	MOVQ 0(SI),AX
-	SHLQ $1,AX
-	MULQ 8(SI)
-	MOVQ AX,R9
-	MOVQ DX,R10
-	MOVQ 0(SI),AX
-	SHLQ $1,AX
-	MULQ 16(SI)
-	MOVQ AX,R11
-	MOVQ DX,R12
-	MOVQ 0(SI),AX
-	SHLQ $1,AX
-	MULQ 24(SI)
-	MOVQ AX,R13
-	MOVQ DX,R14
-	MOVQ 0(SI),AX
-	SHLQ $1,AX
-	MULQ 32(SI)
-	MOVQ AX,R15
-	MOVQ DX,BX
-	MOVQ 8(SI),AX
-	MULQ 8(SI)
-	ADDQ AX,R11
-	ADCQ DX,R12
-	MOVQ 8(SI),AX
-	SHLQ $1,AX
-	MULQ 16(SI)
-	ADDQ AX,R13
-	ADCQ DX,R14
-	MOVQ 8(SI),AX
-	SHLQ $1,AX
-	MULQ 24(SI)
-	ADDQ AX,R15
-	ADCQ DX,BX
-	MOVQ 8(SI),DX
-	IMUL3Q $38,DX,AX
-	MULQ 32(SI)
-	ADDQ AX,CX
-	ADCQ DX,R8
-	MOVQ 16(SI),AX
-	MULQ 16(SI)
-	ADDQ AX,R15
-	ADCQ DX,BX
-	MOVQ 16(SI),DX
-	IMUL3Q $38,DX,AX
-	MULQ 24(SI)
-	ADDQ AX,CX
-	ADCQ DX,R8
-	MOVQ 16(SI),DX
-	IMUL3Q $38,DX,AX
-	MULQ 32(SI)
-	ADDQ AX,R9
-	ADCQ DX,R10
-	MOVQ 24(SI),DX
-	IMUL3Q $19,DX,AX
-	MULQ 24(SI)
-	ADDQ AX,R9
-	ADCQ DX,R10
-	MOVQ 24(SI),DX
-	IMUL3Q $38,DX,AX
-	MULQ 32(SI)
-	ADDQ AX,R11
-	ADCQ DX,R12
-	MOVQ 32(SI),DX
-	IMUL3Q $19,DX,AX
-	MULQ 32(SI)
-	ADDQ AX,R13
-	ADCQ DX,R14
-	MOVQ $REDMASK51,SI
-	SHLQ $13,R8:CX
-	ANDQ SI,CX
-	SHLQ $13,R10:R9
-	ANDQ SI,R9
-	ADDQ R8,R9
-	SHLQ $13,R12:R11
-	ANDQ SI,R11
-	ADDQ R10,R11
-	SHLQ $13,R14:R13
-	ANDQ SI,R13
-	ADDQ R12,R13
-	SHLQ $13,BX:R15
-	ANDQ SI,R15
-	ADDQ R14,R15
-	IMUL3Q $19,BX,DX
-	ADDQ DX,CX
-	MOVQ CX,DX
-	SHRQ $51,DX
-	ADDQ R9,DX
-	ANDQ SI,CX
-	MOVQ DX,R8
-	SHRQ $51,DX
-	ADDQ R11,DX
-	ANDQ SI,R8
-	MOVQ DX,R9
-	SHRQ $51,DX
-	ADDQ R13,DX
-	ANDQ SI,R9
-	MOVQ DX,AX
-	SHRQ $51,DX
-	ADDQ R15,DX
-	ANDQ SI,AX
-	MOVQ DX,R10
-	SHRQ $51,DX
-	IMUL3Q $19,DX,DX
-	ADDQ DX,CX
-	ANDQ SI,R10
-	MOVQ CX,0(DI)
-	MOVQ R8,8(DI)
-	MOVQ R9,16(DI)
-	MOVQ AX,24(DI)
-	MOVQ R10,32(DI)
-	RET

vendor/golang.org/x/crypto/ed25519/ed25519.go

@@ -1,181 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package ed25519 implements the Ed25519 signature algorithm. See
-// http://ed25519.cr.yp.to/.
-//
-// These functions are also compatible with the “Ed25519” function defined in
-// https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05.
-package ed25519
-
-// This code is a port of the public domain, “ref10” implementation of ed25519
-// from SUPERCOP.
-
-import (
-	"crypto"
-	cryptorand "crypto/rand"
-	"crypto/sha512"
-	"crypto/subtle"
-	"errors"
-	"io"
-	"strconv"
-
-	"golang.org/x/crypto/ed25519/internal/edwards25519"
-)
-
-const (
-	// PublicKeySize is the size, in bytes, of public keys as used in this package.
-	PublicKeySize = 32
-	// PrivateKeySize is the size, in bytes, of private keys as used in this package.
-	PrivateKeySize = 64
-	// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
-	SignatureSize = 64
-)
-
-// PublicKey is the type of Ed25519 public keys.
-type PublicKey []byte
-
-// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
-type PrivateKey []byte
-
-// Public returns the PublicKey corresponding to priv.
-func (priv PrivateKey) Public() crypto.PublicKey {
-	publicKey := make([]byte, PublicKeySize)
-	copy(publicKey, priv[32:])
-	return PublicKey(publicKey)
-}
-
-// Sign signs the given message with priv.
-// Ed25519 performs two passes over messages to be signed and therefore cannot
-// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
-// indicate the message hasn't been hashed. This can be achieved by passing
-// crypto.Hash(0) as the value for opts.
-func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
-	if opts.HashFunc() != crypto.Hash(0) {
-		return nil, errors.New("ed25519: cannot sign hashed message")
-	}
-
-	return Sign(priv, message), nil
-}
-
-// GenerateKey generates a public/private key pair using entropy from rand.
-// If rand is nil, crypto/rand.Reader will be used.
-func GenerateKey(rand io.Reader) (publicKey PublicKey, privateKey PrivateKey, err error) {
-	if rand == nil {
-		rand = cryptorand.Reader
-	}
-
-	privateKey = make([]byte, PrivateKeySize)
-	publicKey = make([]byte, PublicKeySize)
-	_, err = io.ReadFull(rand, privateKey[:32])
-	if err != nil {
-		return nil, nil, err
-	}
-
-	digest := sha512.Sum512(privateKey[:32])
-	digest[0] &= 248
-	digest[31] &= 127
-	digest[31] |= 64
-
-	var A edwards25519.ExtendedGroupElement
-	var hBytes [32]byte
-	copy(hBytes[:], digest[:])
-	edwards25519.GeScalarMultBase(&A, &hBytes)
-	var publicKeyBytes [32]byte
-	A.ToBytes(&publicKeyBytes)
-
-	copy(privateKey[32:], publicKeyBytes[:])
-	copy(publicKey, publicKeyBytes[:])
-
-	return publicKey, privateKey, nil
-}
-
-// Sign signs the message with privateKey and returns a signature. It will
-// panic if len(privateKey) is not PrivateKeySize.
-func Sign(privateKey PrivateKey, message []byte) []byte {
-	if l := len(privateKey); l != PrivateKeySize {
-		panic("ed25519: bad private key length: " + strconv.Itoa(l))
-	}
-
-	h := sha512.New()
-	h.Write(privateKey[:32])
-
-	var digest1, messageDigest, hramDigest [64]byte
-	var expandedSecretKey [32]byte
-	h.Sum(digest1[:0])
-	copy(expandedSecretKey[:], digest1[:])
-	expandedSecretKey[0] &= 248
-	expandedSecretKey[31] &= 63
-	expandedSecretKey[31] |= 64
-
-	h.Reset()
-	h.Write(digest1[32:])
-	h.Write(message)
-	h.Sum(messageDigest[:0])
-
-	var messageDigestReduced [32]byte
-	edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
-	var R edwards25519.ExtendedGroupElement
-	edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
-
-	var encodedR [32]byte
-	R.ToBytes(&encodedR)
-
-	h.Reset()
-	h.Write(encodedR[:])
-	h.Write(privateKey[32:])
-	h.Write(message)
-	h.Sum(hramDigest[:0])
-	var hramDigestReduced [32]byte
-	edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
-
-	var s [32]byte
-	edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
-
-	signature := make([]byte, SignatureSize)
-	copy(signature[:], encodedR[:])
-	copy(signature[32:], s[:])
-
-	return signature
-}
-
-// Verify reports whether sig is a valid signature of message by publicKey. It
-// will panic if len(publicKey) is not PublicKeySize.
-func Verify(publicKey PublicKey, message, sig []byte) bool {
-	if l := len(publicKey); l != PublicKeySize {
-		panic("ed25519: bad public key length: " + strconv.Itoa(l))
-	}
-
-	if len(sig) != SignatureSize || sig[63]&224 != 0 {
-		return false
-	}
-
-	var A edwards25519.ExtendedGroupElement
-	var publicKeyBytes [32]byte
-	copy(publicKeyBytes[:], publicKey)
-	if !A.FromBytes(&publicKeyBytes) {
-		return false
-	}
-	edwards25519.FeNeg(&A.X, &A.X)
-	edwards25519.FeNeg(&A.T, &A.T)
-
-	h := sha512.New()
-	h.Write(sig[:32])
-	h.Write(publicKey[:])
-	h.Write(message)
-	var digest [64]byte
-	h.Sum(digest[:0])
-
-	var hReduced [32]byte
-	edwards25519.ScReduce(&hReduced, &digest)
-
-	var R edwards25519.ProjectiveGroupElement
-	var b [32]byte
-	copy(b[:], sig[32:])
-	edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
-
-	var checkR [32]byte
-	R.ToBytes(&checkR)
-	return subtle.ConstantTimeCompare(sig[:32], checkR[:]) == 1
-}

vendor/golang.org/x/crypto/ssh/agent/client.go

@@ -1,659 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package agent implements the ssh-agent protocol, and provides both
-// a client and a server. The client can talk to a standard ssh-agent
-// that uses UNIX sockets, and one could implement an alternative
-// ssh-agent process using the sample server.
-//
-// References:
-//  [PROTOCOL.agent]:    http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.agent?rev=HEAD
-package agent // import "golang.org/x/crypto/ssh/agent"
-
-import (
-	"bytes"
-	"crypto/dsa"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"encoding/base64"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"math/big"
-	"sync"
-
-	"golang.org/x/crypto/ed25519"
-	"golang.org/x/crypto/ssh"
-)
-
-// Agent represents the capabilities of an ssh-agent.
-type Agent interface {
-	// List returns the identities known to the agent.
-	List() ([]*Key, error)
-
-	// Sign has the agent sign the data using a protocol 2 key as defined
-	// in [PROTOCOL.agent] section 2.6.2.
-	Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error)
-
-	// Add adds a private key to the agent.
-	Add(key AddedKey) error
-
-	// Remove removes all identities with the given public key.
-	Remove(key ssh.PublicKey) error
-
-	// RemoveAll removes all identities.
-	RemoveAll() error
-
-	// Lock locks the agent. Sign and Remove will fail, and List will empty an empty list.
-	Lock(passphrase []byte) error
-
-	// Unlock undoes the effect of Lock
-	Unlock(passphrase []byte) error
-
-	// Signers returns signers for all the known keys.
-	Signers() ([]ssh.Signer, error)
-}
-
-// AddedKey describes an SSH key to be added to an Agent.
-type AddedKey struct {
-	// PrivateKey must be a *rsa.PrivateKey, *dsa.PrivateKey or
-	// *ecdsa.PrivateKey, which will be inserted into the agent.
-	PrivateKey interface{}
-	// Certificate, if not nil, is communicated to the agent and will be
-	// stored with the key.
-	Certificate *ssh.Certificate
-	// Comment is an optional, free-form string.
-	Comment string
-	// LifetimeSecs, if not zero, is the number of seconds that the
-	// agent will store the key for.
-	LifetimeSecs uint32
-	// ConfirmBeforeUse, if true, requests that the agent confirm with the
-	// user before each use of this key.
-	ConfirmBeforeUse bool
-}
-
-// See [PROTOCOL.agent], section 3.
-const (
-	agentRequestV1Identities   = 1
-	agentRemoveAllV1Identities = 9
-
-	// 3.2 Requests from client to agent for protocol 2 key operations
-	agentAddIdentity         = 17
-	agentRemoveIdentity      = 18
-	agentRemoveAllIdentities = 19
-	agentAddIdConstrained    = 25
-
-	// 3.3 Key-type independent requests from client to agent
-	agentAddSmartcardKey            = 20
-	agentRemoveSmartcardKey         = 21
-	agentLock                       = 22
-	agentUnlock                     = 23
-	agentAddSmartcardKeyConstrained = 26
-
-	// 3.7 Key constraint identifiers
-	agentConstrainLifetime = 1
-	agentConstrainConfirm  = 2
-)
-
-// maxAgentResponseBytes is the maximum agent reply size that is accepted. This
-// is a sanity check, not a limit in the spec.
-const maxAgentResponseBytes = 16 << 20
-
-// Agent messages:
-// These structures mirror the wire format of the corresponding ssh agent
-// messages found in [PROTOCOL.agent].
-
-// 3.4 Generic replies from agent to client
-const agentFailure = 5
-
-type failureAgentMsg struct{}
-
-const agentSuccess = 6
-
-type successAgentMsg struct{}
-
-// See [PROTOCOL.agent], section 2.5.2.
-const agentRequestIdentities = 11
-
-type requestIdentitiesAgentMsg struct{}
-
-// See [PROTOCOL.agent], section 2.5.2.
-const agentIdentitiesAnswer = 12
-
-type identitiesAnswerAgentMsg struct {
-	NumKeys uint32 `sshtype:"12"`
-	Keys    []byte `ssh:"rest"`
-}
-
-// See [PROTOCOL.agent], section 2.6.2.
-const agentSignRequest = 13
-
-type signRequestAgentMsg struct {
-	KeyBlob []byte `sshtype:"13"`
-	Data    []byte
-	Flags   uint32
-}
-
-// See [PROTOCOL.agent], section 2.6.2.
-
-// 3.6 Replies from agent to client for protocol 2 key operations
-const agentSignResponse = 14
-
-type signResponseAgentMsg struct {
-	SigBlob []byte `sshtype:"14"`
-}
-
-type publicKey struct {
-	Format string
-	Rest   []byte `ssh:"rest"`
-}
-
-// Key represents a protocol 2 public key as defined in
-// [PROTOCOL.agent], section 2.5.2.
-type Key struct {
-	Format  string
-	Blob    []byte
-	Comment string
-}
-
-func clientErr(err error) error {
-	return fmt.Errorf("agent: client error: %v", err)
-}
-
-// String returns the storage form of an agent key with the format, base64
-// encoded serialized key, and the comment if it is not empty.
-func (k *Key) String() string {
-	s := string(k.Format) + " " + base64.StdEncoding.EncodeToString(k.Blob)
-
-	if k.Comment != "" {
-		s += " " + k.Comment
-	}
-
-	return s
-}
-
-// Type returns the public key type.
-func (k *Key) Type() string {
-	return k.Format
-}
-
-// Marshal returns key blob to satisfy the ssh.PublicKey interface.
-func (k *Key) Marshal() []byte {
-	return k.Blob
-}
-
-// Verify satisfies the ssh.PublicKey interface.
-func (k *Key) Verify(data []byte, sig *ssh.Signature) error {
-	pubKey, err := ssh.ParsePublicKey(k.Blob)
-	if err != nil {
-		return fmt.Errorf("agent: bad public key: %v", err)
-	}
-	return pubKey.Verify(data, sig)
-}
-
-type wireKey struct {
-	Format string
-	Rest   []byte `ssh:"rest"`
-}
-
-func parseKey(in []byte) (out *Key, rest []byte, err error) {
-	var record struct {
-		Blob    []byte
-		Comment string
-		Rest    []byte `ssh:"rest"`
-	}
-
-	if err := ssh.Unmarshal(in, &record); err != nil {
-		return nil, nil, err
-	}
-
-	var wk wireKey
-	if err := ssh.Unmarshal(record.Blob, &wk); err != nil {
-		return nil, nil, err
-	}
-
-	return &Key{
-		Format:  wk.Format,
-		Blob:    record.Blob,
-		Comment: record.Comment,
-	}, record.Rest, nil
-}
-
-// client is a client for an ssh-agent process.
-type client struct {
-	// conn is typically a *net.UnixConn
-	conn io.ReadWriter
-	// mu is used to prevent concurrent access to the agent
-	mu sync.Mutex
-}
-
-// NewClient returns an Agent that talks to an ssh-agent process over
-// the given connection.
-func NewClient(rw io.ReadWriter) Agent {
-	return &client{conn: rw}
-}
-
-// call sends an RPC to the agent. On success, the reply is
-// unmarshaled into reply and replyType is set to the first byte of
-// the reply, which contains the type of the message.
-func (c *client) call(req []byte) (reply interface{}, err error) {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	msg := make([]byte, 4+len(req))
-	binary.BigEndian.PutUint32(msg, uint32(len(req)))
-	copy(msg[4:], req)
-	if _, err = c.conn.Write(msg); err != nil {
-		return nil, clientErr(err)
-	}
-
-	var respSizeBuf [4]byte
-	if _, err = io.ReadFull(c.conn, respSizeBuf[:]); err != nil {
-		return nil, clientErr(err)
-	}
-	respSize := binary.BigEndian.Uint32(respSizeBuf[:])
-	if respSize > maxAgentResponseBytes {
-		return nil, clientErr(err)
-	}
-
-	buf := make([]byte, respSize)
-	if _, err = io.ReadFull(c.conn, buf); err != nil {
-		return nil, clientErr(err)
-	}
-	reply, err = unmarshal(buf)
-	if err != nil {
-		return nil, clientErr(err)
-	}
-	return reply, err
-}
-
-func (c *client) simpleCall(req []byte) error {
-	resp, err := c.call(req)
-	if err != nil {
-		return err
-	}
-	if _, ok := resp.(*successAgentMsg); ok {
-		return nil
-	}
-	return errors.New("agent: failure")
-}
-
-func (c *client) RemoveAll() error {
-	return c.simpleCall([]byte{agentRemoveAllIdentities})
-}
-
-func (c *client) Remove(key ssh.PublicKey) error {
-	req := ssh.Marshal(&agentRemoveIdentityMsg{
-		KeyBlob: key.Marshal(),
-	})
-	return c.simpleCall(req)
-}
-
-func (c *client) Lock(passphrase []byte) error {
-	req := ssh.Marshal(&agentLockMsg{
-		Passphrase: passphrase,
-	})
-	return c.simpleCall(req)
-}
-
-func (c *client) Unlock(passphrase []byte) error {
-	req := ssh.Marshal(&agentUnlockMsg{
-		Passphrase: passphrase,
-	})
-	return c.simpleCall(req)
-}
-
-// List returns the identities known to the agent.
-func (c *client) List() ([]*Key, error) {
-	// see [PROTOCOL.agent] section 2.5.2.
-	req := []byte{agentRequestIdentities}
-
-	msg, err := c.call(req)
-	if err != nil {
-		return nil, err
-	}
-
-	switch msg := msg.(type) {
-	case *identitiesAnswerAgentMsg:
-		if msg.NumKeys > maxAgentResponseBytes/8 {
-			return nil, errors.New("agent: too many keys in agent reply")
-		}
-		keys := make([]*Key, msg.NumKeys)
-		data := msg.Keys
-		for i := uint32(0); i < msg.NumKeys; i++ {
-			var key *Key
-			var err error
-			if key, data, err = parseKey(data); err != nil {
-				return nil, err
-			}
-			keys[i] = key
-		}
-		return keys, nil
-	case *failureAgentMsg:
-		return nil, errors.New("agent: failed to list keys")
-	}
-	panic("unreachable")
-}
-
-// Sign has the agent sign the data using a protocol 2 key as defined
-// in [PROTOCOL.agent] section 2.6.2.
-func (c *client) Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error) {
-	req := ssh.Marshal(signRequestAgentMsg{
-		KeyBlob: key.Marshal(),
-		Data:    data,
-	})
-
-	msg, err := c.call(req)
-	if err != nil {
-		return nil, err
-	}
-
-	switch msg := msg.(type) {
-	case *signResponseAgentMsg:
-		var sig ssh.Signature
-		if err := ssh.Unmarshal(msg.SigBlob, &sig); err != nil {
-			return nil, err
-		}
-
-		return &sig, nil
-	case *failureAgentMsg:
-		return nil, errors.New("agent: failed to sign challenge")
-	}
-	panic("unreachable")
-}
-
-// unmarshal parses an agent message in packet, returning the parsed
-// form and the message type of packet.
-func unmarshal(packet []byte) (interface{}, error) {
-	if len(packet) < 1 {
-		return nil, errors.New("agent: empty packet")
-	}
-	var msg interface{}
-	switch packet[0] {
-	case agentFailure:
-		return new(failureAgentMsg), nil
-	case agentSuccess:
-		return new(successAgentMsg), nil
-	case agentIdentitiesAnswer:
-		msg = new(identitiesAnswerAgentMsg)
-	case agentSignResponse:
-		msg = new(signResponseAgentMsg)
-	case agentV1IdentitiesAnswer:
-		msg = new(agentV1IdentityMsg)
-	default:
-		return nil, fmt.Errorf("agent: unknown type tag %d", packet[0])
-	}
-	if err := ssh.Unmarshal(packet, msg); err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-type rsaKeyMsg struct {
-	Type        string `sshtype:"17|25"`
-	N           *big.Int
-	E           *big.Int
-	D           *big.Int
-	Iqmp        *big.Int // IQMP = Inverse Q Mod P
-	P           *big.Int
-	Q           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type dsaKeyMsg struct {
-	Type        string `sshtype:"17|25"`
-	P           *big.Int
-	Q           *big.Int
-	G           *big.Int
-	Y           *big.Int
-	X           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type ecdsaKeyMsg struct {
-	Type        string `sshtype:"17|25"`
-	Curve       string
-	KeyBytes    []byte
-	D           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type ed25519KeyMsg struct {
-	Type        string `sshtype:"17|25"`
-	Pub         []byte
-	Priv        []byte
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-// Insert adds a private key to the agent.
-func (c *client) insertKey(s interface{}, comment string, constraints []byte) error {
-	var req []byte
-	switch k := s.(type) {
-	case *rsa.PrivateKey:
-		if len(k.Primes) != 2 {
-			return fmt.Errorf("agent: unsupported RSA key with %d primes", len(k.Primes))
-		}
-		k.Precompute()
-		req = ssh.Marshal(rsaKeyMsg{
-			Type:        ssh.KeyAlgoRSA,
-			N:           k.N,
-			E:           big.NewInt(int64(k.E)),
-			D:           k.D,
-			Iqmp:        k.Precomputed.Qinv,
-			P:           k.Primes[0],
-			Q:           k.Primes[1],
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *dsa.PrivateKey:
-		req = ssh.Marshal(dsaKeyMsg{
-			Type:        ssh.KeyAlgoDSA,
-			P:           k.P,
-			Q:           k.Q,
-			G:           k.G,
-			Y:           k.Y,
-			X:           k.X,
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *ecdsa.PrivateKey:
-		nistID := fmt.Sprintf("nistp%d", k.Params().BitSize)
-		req = ssh.Marshal(ecdsaKeyMsg{
-			Type:        "ecdsa-sha2-" + nistID,
-			Curve:       nistID,
-			KeyBytes:    elliptic.Marshal(k.Curve, k.X, k.Y),
-			D:           k.D,
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *ed25519.PrivateKey:
-		req = ssh.Marshal(ed25519KeyMsg{
-			Type:        ssh.KeyAlgoED25519,
-			Pub:         []byte(*k)[32:],
-			Priv:        []byte(*k),
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	default:
-		return fmt.Errorf("agent: unsupported key type %T", s)
-	}
-
-	// if constraints are present then the message type needs to be changed.
-	if len(constraints) != 0 {
-		req[0] = agentAddIdConstrained
-	}
-
-	resp, err := c.call(req)
-	if err != nil {
-		return err
-	}
-	if _, ok := resp.(*successAgentMsg); ok {
-		return nil
-	}
-	return errors.New("agent: failure")
-}
-
-type rsaCertMsg struct {
-	Type        string `sshtype:"17|25"`
-	CertBytes   []byte
-	D           *big.Int
-	Iqmp        *big.Int // IQMP = Inverse Q Mod P
-	P           *big.Int
-	Q           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type dsaCertMsg struct {
-	Type        string `sshtype:"17|25"`
-	CertBytes   []byte
-	X           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type ecdsaCertMsg struct {
-	Type        string `sshtype:"17|25"`
-	CertBytes   []byte
-	D           *big.Int
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-type ed25519CertMsg struct {
-	Type        string `sshtype:"17|25"`
-	CertBytes   []byte
-	Pub         []byte
-	Priv        []byte
-	Comments    string
-	Constraints []byte `ssh:"rest"`
-}
-
-// Add adds a private key to the agent. If a certificate is given,
-// that certificate is added instead as public key.
-func (c *client) Add(key AddedKey) error {
-	var constraints []byte
-
-	if secs := key.LifetimeSecs; secs != 0 {
-		constraints = append(constraints, agentConstrainLifetime)
-
-		var secsBytes [4]byte
-		binary.BigEndian.PutUint32(secsBytes[:], secs)
-		constraints = append(constraints, secsBytes[:]...)
-	}
-
-	if key.ConfirmBeforeUse {
-		constraints = append(constraints, agentConstrainConfirm)
-	}
-
-	if cert := key.Certificate; cert == nil {
-		return c.insertKey(key.PrivateKey, key.Comment, constraints)
-	} else {
-		return c.insertCert(key.PrivateKey, cert, key.Comment, constraints)
-	}
-}
-
-func (c *client) insertCert(s interface{}, cert *ssh.Certificate, comment string, constraints []byte) error {
-	var req []byte
-	switch k := s.(type) {
-	case *rsa.PrivateKey:
-		if len(k.Primes) != 2 {
-			return fmt.Errorf("agent: unsupported RSA key with %d primes", len(k.Primes))
-		}
-		k.Precompute()
-		req = ssh.Marshal(rsaCertMsg{
-			Type:        cert.Type(),
-			CertBytes:   cert.Marshal(),
-			D:           k.D,
-			Iqmp:        k.Precomputed.Qinv,
-			P:           k.Primes[0],
-			Q:           k.Primes[1],
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *dsa.PrivateKey:
-		req = ssh.Marshal(dsaCertMsg{
-			Type:        cert.Type(),
-			CertBytes:   cert.Marshal(),
-			X:           k.X,
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *ecdsa.PrivateKey:
-		req = ssh.Marshal(ecdsaCertMsg{
-			Type:        cert.Type(),
-			CertBytes:   cert.Marshal(),
-			D:           k.D,
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	case *ed25519.PrivateKey:
-		req = ssh.Marshal(ed25519CertMsg{
-			Type:        cert.Type(),
-			CertBytes:   cert.Marshal(),
-			Pub:         []byte(*k)[32:],
-			Priv:        []byte(*k),
-			Comments:    comment,
-			Constraints: constraints,
-		})
-	default:
-		return fmt.Errorf("agent: unsupported key type %T", s)
-	}
-
-	// if constraints are present then the message type needs to be changed.
-	if len(constraints) != 0 {
-		req[0] = agentAddIdConstrained
-	}
-
-	signer, err := ssh.NewSignerFromKey(s)
-	if err != nil {
-		return err
-	}
-	if bytes.Compare(cert.Key.Marshal(), signer.PublicKey().Marshal()) != 0 {
-		return errors.New("agent: signer and cert have different public key")
-	}
-
-	resp, err := c.call(req)
-	if err != nil {
-		return err
-	}
-	if _, ok := resp.(*successAgentMsg); ok {
-		return nil
-	}
-	return errors.New("agent: failure")
-}
-
-// Signers provides a callback for client authentication.
-func (c *client) Signers() ([]ssh.Signer, error) {
-	keys, err := c.List()
-	if err != nil {
-		return nil, err
-	}
-
-	var result []ssh.Signer
-	for _, k := range keys {
-		result = append(result, &agentKeyringSigner{c, k})
-	}
-	return result, nil
-}
-
-type agentKeyringSigner struct {
-	agent *client
-	pub   ssh.PublicKey
-}
-
-func (s *agentKeyringSigner) PublicKey() ssh.PublicKey {
-	return s.pub
-}
-
-func (s *agentKeyringSigner) Sign(rand io.Reader, data []byte) (*ssh.Signature, error) {
-	// The agent has its own entropy source, so the rand argument is ignored.
-	return s.agent.Sign(s.pub, data)
-}

vendor/golang.org/x/crypto/ssh/agent/forward.go

@@ -1,103 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package agent
-
-import (
-	"errors"
-	"io"
-	"net"
-	"sync"
-
-	"golang.org/x/crypto/ssh"
-)
-
-// RequestAgentForwarding sets up agent forwarding for the session.
-// ForwardToAgent or ForwardToRemote should be called to route
-// the authentication requests.
-func RequestAgentForwarding(session *ssh.Session) error {
-	ok, err := session.SendRequest("auth-agent-req@openssh.com", true, nil)
-	if err != nil {
-		return err
-	}
-	if !ok {
-		return errors.New("forwarding request denied")
-	}
-	return nil
-}
-
-// ForwardToAgent routes authentication requests to the given keyring.
-func ForwardToAgent(client *ssh.Client, keyring Agent) error {
-	channels := client.HandleChannelOpen(channelType)
-	if channels == nil {
-		return errors.New("agent: already have handler for " + channelType)
-	}
-
-	go func() {
-		for ch := range channels {
-			channel, reqs, err := ch.Accept()
-			if err != nil {
-				continue
-			}
-			go ssh.DiscardRequests(reqs)
-			go func() {
-				ServeAgent(keyring, channel)
-				channel.Close()
-			}()
-		}
-	}()
-	return nil
-}
-
-const channelType = "auth-agent@openssh.com"
-
-// ForwardToRemote routes authentication requests to the ssh-agent
-// process serving on the given unix socket.
-func ForwardToRemote(client *ssh.Client, addr string) error {
-	channels := client.HandleChannelOpen(channelType)
-	if channels == nil {
-		return errors.New("agent: already have handler for " + channelType)
-	}
-	conn, err := net.Dial("unix", addr)
-	if err != nil {
-		return err
-	}
-	conn.Close()
-
-	go func() {
-		for ch := range channels {
-			channel, reqs, err := ch.Accept()
-			if err != nil {
-				continue
-			}
-			go ssh.DiscardRequests(reqs)
-			go forwardUnixSocket(channel, addr)
-		}
-	}()
-	return nil
-}
-
-func forwardUnixSocket(channel ssh.Channel, addr string) {
-	conn, err := net.Dial("unix", addr)
-	if err != nil {
-		return
-	}
-
-	var wg sync.WaitGroup
-	wg.Add(2)
-	go func() {
-		io.Copy(conn, channel)
-		conn.(*net.UnixConn).CloseWrite()
-		wg.Done()
-	}()
-	go func() {
-		io.Copy(channel, conn)
-		channel.CloseWrite()
-		wg.Done()
-	}()
-
-	wg.Wait()
-	conn.Close()
-	channel.Close()
-}

vendor/golang.org/x/crypto/ssh/agent/keyring.go

@@ -1,215 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package agent
-
-import (
-	"bytes"
-	"crypto/rand"
-	"crypto/subtle"
-	"errors"
-	"fmt"
-	"sync"
-	"time"
-
-	"golang.org/x/crypto/ssh"
-)
-
-type privKey struct {
-	signer  ssh.Signer
-	comment string
-	expire  *time.Time
-}
-
-type keyring struct {
-	mu   sync.Mutex
-	keys []privKey
-
-	locked     bool
-	passphrase []byte
-}
-
-var errLocked = errors.New("agent: locked")
-
-// NewKeyring returns an Agent that holds keys in memory.  It is safe
-// for concurrent use by multiple goroutines.
-func NewKeyring() Agent {
-	return &keyring{}
-}
-
-// RemoveAll removes all identities.
-func (r *keyring) RemoveAll() error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return errLocked
-	}
-
-	r.keys = nil
-	return nil
-}
-
-// removeLocked does the actual key removal. The caller must already be holding the
-// keyring mutex.
-func (r *keyring) removeLocked(want []byte) error {
-	found := false
-	for i := 0; i < len(r.keys); {
-		if bytes.Equal(r.keys[i].signer.PublicKey().Marshal(), want) {
-			found = true
-			r.keys[i] = r.keys[len(r.keys)-1]
-			r.keys = r.keys[:len(r.keys)-1]
-			continue
-		} else {
-			i++
-		}
-	}
-
-	if !found {
-		return errors.New("agent: key not found")
-	}
-	return nil
-}
-
-// Remove removes all identities with the given public key.
-func (r *keyring) Remove(key ssh.PublicKey) error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return errLocked
-	}
-
-	return r.removeLocked(key.Marshal())
-}
-
-// Lock locks the agent. Sign and Remove will fail, and List will return an empty list.
-func (r *keyring) Lock(passphrase []byte) error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return errLocked
-	}
-
-	r.locked = true
-	r.passphrase = passphrase
-	return nil
-}
-
-// Unlock undoes the effect of Lock
-func (r *keyring) Unlock(passphrase []byte) error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if !r.locked {
-		return errors.New("agent: not locked")
-	}
-	if len(passphrase) != len(r.passphrase) || 1 != subtle.ConstantTimeCompare(passphrase, r.passphrase) {
-		return fmt.Errorf("agent: incorrect passphrase")
-	}
-
-	r.locked = false
-	r.passphrase = nil
-	return nil
-}
-
-// expireKeysLocked removes expired keys from the keyring. If a key was added
-// with a lifetimesecs contraint and seconds >= lifetimesecs seconds have
-// ellapsed, it is removed. The caller *must* be holding the keyring mutex.
-func (r *keyring) expireKeysLocked() {
-	for _, k := range r.keys {
-		if k.expire != nil && time.Now().After(*k.expire) {
-			r.removeLocked(k.signer.PublicKey().Marshal())
-		}
-	}
-}
-
-// List returns the identities known to the agent.
-func (r *keyring) List() ([]*Key, error) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		// section 2.7: locked agents return empty.
-		return nil, nil
-	}
-
-	r.expireKeysLocked()
-	var ids []*Key
-	for _, k := range r.keys {
-		pub := k.signer.PublicKey()
-		ids = append(ids, &Key{
-			Format:  pub.Type(),
-			Blob:    pub.Marshal(),
-			Comment: k.comment})
-	}
-	return ids, nil
-}
-
-// Insert adds a private key to the keyring. If a certificate
-// is given, that certificate is added as public key. Note that
-// any constraints given are ignored.
-func (r *keyring) Add(key AddedKey) error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return errLocked
-	}
-	signer, err := ssh.NewSignerFromKey(key.PrivateKey)
-
-	if err != nil {
-		return err
-	}
-
-	if cert := key.Certificate; cert != nil {
-		signer, err = ssh.NewCertSigner(cert, signer)
-		if err != nil {
-			return err
-		}
-	}
-
-	p := privKey{
-		signer:  signer,
-		comment: key.Comment,
-	}
-
-	if key.LifetimeSecs > 0 {
-		t := time.Now().Add(time.Duration(key.LifetimeSecs) * time.Second)
-		p.expire = &t
-	}
-
-	r.keys = append(r.keys, p)
-
-	return nil
-}
-
-// Sign returns a signature for the data.
-func (r *keyring) Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return nil, errLocked
-	}
-
-	r.expireKeysLocked()
-	wanted := key.Marshal()
-	for _, k := range r.keys {
-		if bytes.Equal(k.signer.PublicKey().Marshal(), wanted) {
-			return k.signer.Sign(rand.Reader, data)
-		}
-	}
-	return nil, errors.New("not found")
-}
-
-// Signers returns signers for all the known keys.
-func (r *keyring) Signers() ([]ssh.Signer, error) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.locked {
-		return nil, errLocked
-	}
-
-	r.expireKeysLocked()
-	s := make([]ssh.Signer, 0, len(r.keys))
-	for _, k := range r.keys {
-		s = append(s, k.signer)
-	}
-	return s, nil
-}

vendor/golang.org/x/crypto/ssh/agent/server.go

@@ -1,451 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package agent
-
-import (
-	"crypto/dsa"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"math/big"
-
-	"golang.org/x/crypto/ed25519"
-	"golang.org/x/crypto/ssh"
-)
-
-// Server wraps an Agent and uses it to implement the agent side of
-// the SSH-agent, wire protocol.
-type server struct {
-	agent Agent
-}
-
-func (s *server) processRequestBytes(reqData []byte) []byte {
-	rep, err := s.processRequest(reqData)
-	if err != nil {
-		if err != errLocked {
-			// TODO(hanwen): provide better logging interface?
-			log.Printf("agent %d: %v", reqData[0], err)
-		}
-		return []byte{agentFailure}
-	}
-
-	if err == nil && rep == nil {
-		return []byte{agentSuccess}
-	}
-
-	return ssh.Marshal(rep)
-}
-
-func marshalKey(k *Key) []byte {
-	var record struct {
-		Blob    []byte
-		Comment string
-	}
-	record.Blob = k.Marshal()
-	record.Comment = k.Comment
-
-	return ssh.Marshal(&record)
-}
-
-// See [PROTOCOL.agent], section 2.5.1.
-const agentV1IdentitiesAnswer = 2
-
-type agentV1IdentityMsg struct {
-	Numkeys uint32 `sshtype:"2"`
-}
-
-type agentRemoveIdentityMsg struct {
-	KeyBlob []byte `sshtype:"18"`
-}
-
-type agentLockMsg struct {
-	Passphrase []byte `sshtype:"22"`
-}
-
-type agentUnlockMsg struct {
-	Passphrase []byte `sshtype:"23"`
-}
-
-func (s *server) processRequest(data []byte) (interface{}, error) {
-	switch data[0] {
-	case agentRequestV1Identities:
-		return &agentV1IdentityMsg{0}, nil
-
-	case agentRemoveAllV1Identities:
-		return nil, nil
-
-	case agentRemoveIdentity:
-		var req agentRemoveIdentityMsg
-		if err := ssh.Unmarshal(data, &req); err != nil {
-			return nil, err
-		}
-
-		var wk wireKey
-		if err := ssh.Unmarshal(req.KeyBlob, &wk); err != nil {
-			return nil, err
-		}
-
-		return nil, s.agent.Remove(&Key{Format: wk.Format, Blob: req.KeyBlob})
-
-	case agentRemoveAllIdentities:
-		return nil, s.agent.RemoveAll()
-
-	case agentLock:
-		var req agentLockMsg
-		if err := ssh.Unmarshal(data, &req); err != nil {
-			return nil, err
-		}
-
-		return nil, s.agent.Lock(req.Passphrase)
-
-	case agentUnlock:
-		var req agentLockMsg
-		if err := ssh.Unmarshal(data, &req); err != nil {
-			return nil, err
-		}
-		return nil, s.agent.Unlock(req.Passphrase)
-
-	case agentSignRequest:
-		var req signRequestAgentMsg
-		if err := ssh.Unmarshal(data, &req); err != nil {
-			return nil, err
-		}
-
-		var wk wireKey
-		if err := ssh.Unmarshal(req.KeyBlob, &wk); err != nil {
-			return nil, err
-		}
-
-		k := &Key{
-			Format: wk.Format,
-			Blob:   req.KeyBlob,
-		}
-
-		sig, err := s.agent.Sign(k, req.Data) //  TODO(hanwen): flags.
-		if err != nil {
-			return nil, err
-		}
-		return &signResponseAgentMsg{SigBlob: ssh.Marshal(sig)}, nil
-
-	case agentRequestIdentities:
-		keys, err := s.agent.List()
-		if err != nil {
-			return nil, err
-		}
-
-		rep := identitiesAnswerAgentMsg{
-			NumKeys: uint32(len(keys)),
-		}
-		for _, k := range keys {
-			rep.Keys = append(rep.Keys, marshalKey(k)...)
-		}
-		return rep, nil
-
-	case agentAddIdConstrained, agentAddIdentity:
-		return nil, s.insertIdentity(data)
-	}
-
-	return nil, fmt.Errorf("unknown opcode %d", data[0])
-}
-
-func parseRSAKey(req []byte) (*AddedKey, error) {
-	var k rsaKeyMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-	if k.E.BitLen() > 30 {
-		return nil, errors.New("agent: RSA public exponent too large")
-	}
-	priv := &rsa.PrivateKey{
-		PublicKey: rsa.PublicKey{
-			E: int(k.E.Int64()),
-			N: k.N,
-		},
-		D:      k.D,
-		Primes: []*big.Int{k.P, k.Q},
-	}
-	priv.Precompute()
-
-	return &AddedKey{PrivateKey: priv, Comment: k.Comments}, nil
-}
-
-func parseEd25519Key(req []byte) (*AddedKey, error) {
-	var k ed25519KeyMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-	priv := ed25519.PrivateKey(k.Priv)
-	return &AddedKey{PrivateKey: &priv, Comment: k.Comments}, nil
-}
-
-func parseDSAKey(req []byte) (*AddedKey, error) {
-	var k dsaKeyMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-	priv := &dsa.PrivateKey{
-		PublicKey: dsa.PublicKey{
-			Parameters: dsa.Parameters{
-				P: k.P,
-				Q: k.Q,
-				G: k.G,
-			},
-			Y: k.Y,
-		},
-		X: k.X,
-	}
-
-	return &AddedKey{PrivateKey: priv, Comment: k.Comments}, nil
-}
-
-func unmarshalECDSA(curveName string, keyBytes []byte, privScalar *big.Int) (priv *ecdsa.PrivateKey, err error) {
-	priv = &ecdsa.PrivateKey{
-		D: privScalar,
-	}
-
-	switch curveName {
-	case "nistp256":
-		priv.Curve = elliptic.P256()
-	case "nistp384":
-		priv.Curve = elliptic.P384()
-	case "nistp521":
-		priv.Curve = elliptic.P521()
-	default:
-		return nil, fmt.Errorf("agent: unknown curve %q", curveName)
-	}
-
-	priv.X, priv.Y = elliptic.Unmarshal(priv.Curve, keyBytes)
-	if priv.X == nil || priv.Y == nil {
-		return nil, errors.New("agent: point not on curve")
-	}
-
-	return priv, nil
-}
-
-func parseEd25519Cert(req []byte) (*AddedKey, error) {
-	var k ed25519CertMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-	pubKey, err := ssh.ParsePublicKey(k.CertBytes)
-	if err != nil {
-		return nil, err
-	}
-	priv := ed25519.PrivateKey(k.Priv)
-	cert, ok := pubKey.(*ssh.Certificate)
-	if !ok {
-		return nil, errors.New("agent: bad ED25519 certificate")
-	}
-	return &AddedKey{PrivateKey: &priv, Certificate: cert, Comment: k.Comments}, nil
-}
-
-func parseECDSAKey(req []byte) (*AddedKey, error) {
-	var k ecdsaKeyMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-
-	priv, err := unmarshalECDSA(k.Curve, k.KeyBytes, k.D)
-	if err != nil {
-		return nil, err
-	}
-
-	return &AddedKey{PrivateKey: priv, Comment: k.Comments}, nil
-}
-
-func parseRSACert(req []byte) (*AddedKey, error) {
-	var k rsaCertMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-
-	pubKey, err := ssh.ParsePublicKey(k.CertBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	cert, ok := pubKey.(*ssh.Certificate)
-	if !ok {
-		return nil, errors.New("agent: bad RSA certificate")
-	}
-
-	// An RSA publickey as marshaled by rsaPublicKey.Marshal() in keys.go
-	var rsaPub struct {
-		Name string
-		E    *big.Int
-		N    *big.Int
-	}
-	if err := ssh.Unmarshal(cert.Key.Marshal(), &rsaPub); err != nil {
-		return nil, fmt.Errorf("agent: Unmarshal failed to parse public key: %v", err)
-	}
-
-	if rsaPub.E.BitLen() > 30 {
-		return nil, errors.New("agent: RSA public exponent too large")
-	}
-
-	priv := rsa.PrivateKey{
-		PublicKey: rsa.PublicKey{
-			E: int(rsaPub.E.Int64()),
-			N: rsaPub.N,
-		},
-		D:      k.D,
-		Primes: []*big.Int{k.Q, k.P},
-	}
-	priv.Precompute()
-
-	return &AddedKey{PrivateKey: &priv, Certificate: cert, Comment: k.Comments}, nil
-}
-
-func parseDSACert(req []byte) (*AddedKey, error) {
-	var k dsaCertMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-	pubKey, err := ssh.ParsePublicKey(k.CertBytes)
-	if err != nil {
-		return nil, err
-	}
-	cert, ok := pubKey.(*ssh.Certificate)
-	if !ok {
-		return nil, errors.New("agent: bad DSA certificate")
-	}
-
-	// A DSA publickey as marshaled by dsaPublicKey.Marshal() in keys.go
-	var w struct {
-		Name       string
-		P, Q, G, Y *big.Int
-	}
-	if err := ssh.Unmarshal(cert.Key.Marshal(), &w); err != nil {
-		return nil, fmt.Errorf("agent: Unmarshal failed to parse public key: %v", err)
-	}
-
-	priv := &dsa.PrivateKey{
-		PublicKey: dsa.PublicKey{
-			Parameters: dsa.Parameters{
-				P: w.P,
-				Q: w.Q,
-				G: w.G,
-			},
-			Y: w.Y,
-		},
-		X: k.X,
-	}
-
-	return &AddedKey{PrivateKey: priv, Certificate: cert, Comment: k.Comments}, nil
-}
-
-func parseECDSACert(req []byte) (*AddedKey, error) {
-	var k ecdsaCertMsg
-	if err := ssh.Unmarshal(req, &k); err != nil {
-		return nil, err
-	}
-
-	pubKey, err := ssh.ParsePublicKey(k.CertBytes)
-	if err != nil {
-		return nil, err
-	}
-	cert, ok := pubKey.(*ssh.Certificate)
-	if !ok {
-		return nil, errors.New("agent: bad ECDSA certificate")
-	}
-
-	// An ECDSA publickey as marshaled by ecdsaPublicKey.Marshal() in keys.go
-	var ecdsaPub struct {
-		Name string
-		ID   string
-		Key  []byte
-	}
-	if err := ssh.Unmarshal(cert.Key.Marshal(), &ecdsaPub); err != nil {
-		return nil, err
-	}
-
-	priv, err := unmarshalECDSA(ecdsaPub.ID, ecdsaPub.Key, k.D)
-	if err != nil {
-		return nil, err
-	}
-
-	return &AddedKey{PrivateKey: priv, Certificate: cert, Comment: k.Comments}, nil
-}
-
-func (s *server) insertIdentity(req []byte) error {
-	var record struct {
-		Type string `sshtype:"17|25"`
-		Rest []byte `ssh:"rest"`
-	}
-
-	if err := ssh.Unmarshal(req, &record); err != nil {
-		return err
-	}
-
-	var addedKey *AddedKey
-	var err error
-
-	switch record.Type {
-	case ssh.KeyAlgoRSA:
-		addedKey, err = parseRSAKey(req)
-	case ssh.KeyAlgoDSA:
-		addedKey, err = parseDSAKey(req)
-	case ssh.KeyAlgoECDSA256, ssh.KeyAlgoECDSA384, ssh.KeyAlgoECDSA521:
-		addedKey, err = parseECDSAKey(req)
-	case ssh.KeyAlgoED25519:
-		addedKey, err = parseEd25519Key(req)
-	case ssh.CertAlgoRSAv01:
-		addedKey, err = parseRSACert(req)
-	case ssh.CertAlgoDSAv01:
-		addedKey, err = parseDSACert(req)
-	case ssh.CertAlgoECDSA256v01, ssh.CertAlgoECDSA384v01, ssh.CertAlgoECDSA521v01:
-		addedKey, err = parseECDSACert(req)
-	case ssh.CertAlgoED25519v01:
-		addedKey, err = parseEd25519Cert(req)
-	default:
-		return fmt.Errorf("agent: not implemented: %q", record.Type)
-	}
-
-	if err != nil {
-		return err
-	}
-	return s.agent.Add(*addedKey)
-}
-
-// ServeAgent serves the agent protocol on the given connection. It
-// returns when an I/O error occurs.
-func ServeAgent(agent Agent, c io.ReadWriter) error {
-	s := &server{agent}
-
-	var length [4]byte
-	for {
-		if _, err := io.ReadFull(c, length[:]); err != nil {
-			return err
-		}
-		l := binary.BigEndian.Uint32(length[:])
-		if l > maxAgentResponseBytes {
-			// We also cap requests.
-			return fmt.Errorf("agent: request too large: %d", l)
-		}
-
-		req := make([]byte, l)
-		if _, err := io.ReadFull(c, req); err != nil {
-			return err
-		}
-
-		repData := s.processRequestBytes(req)
-		if len(repData) > maxAgentResponseBytes {
-			return fmt.Errorf("agent: reply too large: %d bytes", len(repData))
-		}
-
-		binary.BigEndian.PutUint32(length[:], uint32(len(repData)))
-		if _, err := c.Write(length[:]); err != nil {
-			return err
-		}
-		if _, err := c.Write(repData); err != nil {
-			return err
-		}
-	}
-}

vendor/golang.org/x/crypto/ssh/buffer.go

@@ -1,98 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"io"
-	"sync"
-)
-
-// buffer provides a linked list buffer for data exchange
-// between producer and consumer. Theoretically the buffer is
-// of unlimited capacity as it does no allocation of its own.
-type buffer struct {
-	// protects concurrent access to head, tail and closed
-	*sync.Cond
-
-	head *element // the buffer that will be read first
-	tail *element // the buffer that will be read last
-
-	closed bool
-}
-
-// An element represents a single link in a linked list.
-type element struct {
-	buf  []byte
-	next *element
-}
-
-// newBuffer returns an empty buffer that is not closed.
-func newBuffer() *buffer {
-	e := new(element)
-	b := &buffer{
-		Cond: newCond(),
-		head: e,
-		tail: e,
-	}
-	return b
-}
-
-// write makes buf available for Read to receive.
-// buf must not be modified after the call to write.
-func (b *buffer) write(buf []byte) {
-	b.Cond.L.Lock()
-	e := &element{buf: buf}
-	b.tail.next = e
-	b.tail = e
-	b.Cond.Signal()
-	b.Cond.L.Unlock()
-}
-
-// eof closes the buffer. Reads from the buffer once all
-// the data has been consumed will receive os.EOF.
-func (b *buffer) eof() error {
-	b.Cond.L.Lock()
-	b.closed = true
-	b.Cond.Signal()
-	b.Cond.L.Unlock()
-	return nil
-}
-
-// Read reads data from the internal buffer in buf.  Reads will block
-// if no data is available, or until the buffer is closed.
-func (b *buffer) Read(buf []byte) (n int, err error) {
-	b.Cond.L.Lock()
-	defer b.Cond.L.Unlock()
-
-	for len(buf) > 0 {
-		// if there is data in b.head, copy it
-		if len(b.head.buf) > 0 {
-			r := copy(buf, b.head.buf)
-			buf, b.head.buf = buf[r:], b.head.buf[r:]
-			n += r
-			continue
-		}
-		// if there is a next buffer, make it the head
-		if len(b.head.buf) == 0 && b.head != b.tail {
-			b.head = b.head.next
-			continue
-		}
-
-		// if at least one byte has been copied, return
-		if n > 0 {
-			break
-		}
-
-		// if nothing was read, and there is nothing outstanding
-		// check to see if the buffer is closed.
-		if b.closed {
-			err = io.EOF
-			break
-		}
-		// out of buffers, wait for producer
-		b.Cond.Wait()
-	}
-	return
-}

vendor/golang.org/x/crypto/ssh/certs.go

@@ -1,503 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"sort"
-	"time"
-)
-
-// These constants from [PROTOCOL.certkeys] represent the algorithm names
-// for certificate types supported by this package.
-const (
-	CertAlgoRSAv01      = "ssh-rsa-cert-v01@openssh.com"
-	CertAlgoDSAv01      = "ssh-dss-cert-v01@openssh.com"
-	CertAlgoECDSA256v01 = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
-	CertAlgoECDSA384v01 = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
-	CertAlgoECDSA521v01 = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
-	CertAlgoED25519v01  = "ssh-ed25519-cert-v01@openssh.com"
-)
-
-// Certificate types distinguish between host and user
-// certificates. The values can be set in the CertType field of
-// Certificate.
-const (
-	UserCert = 1
-	HostCert = 2
-)
-
-// Signature represents a cryptographic signature.
-type Signature struct {
-	Format string
-	Blob   []byte
-}
-
-// CertTimeInfinity can be used for OpenSSHCertV01.ValidBefore to indicate that
-// a certificate does not expire.
-const CertTimeInfinity = 1<<64 - 1
-
-// An Certificate represents an OpenSSH certificate as defined in
-// [PROTOCOL.certkeys]?rev=1.8.
-type Certificate struct {
-	Nonce           []byte
-	Key             PublicKey
-	Serial          uint64
-	CertType        uint32
-	KeyId           string
-	ValidPrincipals []string
-	ValidAfter      uint64
-	ValidBefore     uint64
-	Permissions
-	Reserved     []byte
-	SignatureKey PublicKey
-	Signature    *Signature
-}
-
-// genericCertData holds the key-independent part of the certificate data.
-// Overall, certificates contain an nonce, public key fields and
-// key-independent fields.
-type genericCertData struct {
-	Serial          uint64
-	CertType        uint32
-	KeyId           string
-	ValidPrincipals []byte
-	ValidAfter      uint64
-	ValidBefore     uint64
-	CriticalOptions []byte
-	Extensions      []byte
-	Reserved        []byte
-	SignatureKey    []byte
-	Signature       []byte
-}
-
-func marshalStringList(namelist []string) []byte {
-	var to []byte
-	for _, name := range namelist {
-		s := struct{ N string }{name}
-		to = append(to, Marshal(&s)...)
-	}
-	return to
-}
-
-type optionsTuple struct {
-	Key   string
-	Value []byte
-}
-
-type optionsTupleValue struct {
-	Value string
-}
-
-// serialize a map of critical options or extensions
-// issue #10569 - per [PROTOCOL.certkeys] and SSH implementation,
-// we need two length prefixes for a non-empty string value
-func marshalTuples(tups map[string]string) []byte {
-	keys := make([]string, 0, len(tups))
-	for key := range tups {
-		keys = append(keys, key)
-	}
-	sort.Strings(keys)
-
-	var ret []byte
-	for _, key := range keys {
-		s := optionsTuple{Key: key}
-		if value := tups[key]; len(value) > 0 {
-			s.Value = Marshal(&optionsTupleValue{value})
-		}
-		ret = append(ret, Marshal(&s)...)
-	}
-	return ret
-}
-
-// issue #10569 - per [PROTOCOL.certkeys] and SSH implementation,
-// we need two length prefixes for a non-empty option value
-func parseTuples(in []byte) (map[string]string, error) {
-	tups := map[string]string{}
-	var lastKey string
-	var haveLastKey bool
-
-	for len(in) > 0 {
-		var key, val, extra []byte
-		var ok bool
-
-		if key, in, ok = parseString(in); !ok {
-			return nil, errShortRead
-		}
-		keyStr := string(key)
-		// according to [PROTOCOL.certkeys], the names must be in
-		// lexical order.
-		if haveLastKey && keyStr <= lastKey {
-			return nil, fmt.Errorf("ssh: certificate options are not in lexical order")
-		}
-		lastKey, haveLastKey = keyStr, true
-		// the next field is a data field, which if non-empty has a string embedded
-		if val, in, ok = parseString(in); !ok {
-			return nil, errShortRead
-		}
-		if len(val) > 0 {
-			val, extra, ok = parseString(val)
-			if !ok {
-				return nil, errShortRead
-			}
-			if len(extra) > 0 {
-				return nil, fmt.Errorf("ssh: unexpected trailing data after certificate option value")
-			}
-			tups[keyStr] = string(val)
-		} else {
-			tups[keyStr] = ""
-		}
-	}
-	return tups, nil
-}
-
-func parseCert(in []byte, privAlgo string) (*Certificate, error) {
-	nonce, rest, ok := parseString(in)
-	if !ok {
-		return nil, errShortRead
-	}
-
-	key, rest, err := parsePubKey(rest, privAlgo)
-	if err != nil {
-		return nil, err
-	}
-
-	var g genericCertData
-	if err := Unmarshal(rest, &g); err != nil {
-		return nil, err
-	}
-
-	c := &Certificate{
-		Nonce:       nonce,
-		Key:         key,
-		Serial:      g.Serial,
-		CertType:    g.CertType,
-		KeyId:       g.KeyId,
-		ValidAfter:  g.ValidAfter,
-		ValidBefore: g.ValidBefore,
-	}
-
-	for principals := g.ValidPrincipals; len(principals) > 0; {
-		principal, rest, ok := parseString(principals)
-		if !ok {
-			return nil, errShortRead
-		}
-		c.ValidPrincipals = append(c.ValidPrincipals, string(principal))
-		principals = rest
-	}
-
-	c.CriticalOptions, err = parseTuples(g.CriticalOptions)
-	if err != nil {
-		return nil, err
-	}
-	c.Extensions, err = parseTuples(g.Extensions)
-	if err != nil {
-		return nil, err
-	}
-	c.Reserved = g.Reserved
-	k, err := ParsePublicKey(g.SignatureKey)
-	if err != nil {
-		return nil, err
-	}
-
-	c.SignatureKey = k
-	c.Signature, rest, ok = parseSignatureBody(g.Signature)
-	if !ok || len(rest) > 0 {
-		return nil, errors.New("ssh: signature parse error")
-	}
-
-	return c, nil
-}
-
-type openSSHCertSigner struct {
-	pub    *Certificate
-	signer Signer
-}
-
-// NewCertSigner returns a Signer that signs with the given Certificate, whose
-// private key is held by signer. It returns an error if the public key in cert
-// doesn't match the key used by signer.
-func NewCertSigner(cert *Certificate, signer Signer) (Signer, error) {
-	if bytes.Compare(cert.Key.Marshal(), signer.PublicKey().Marshal()) != 0 {
-		return nil, errors.New("ssh: signer and cert have different public key")
-	}
-
-	return &openSSHCertSigner{cert, signer}, nil
-}
-
-func (s *openSSHCertSigner) Sign(rand io.Reader, data []byte) (*Signature, error) {
-	return s.signer.Sign(rand, data)
-}
-
-func (s *openSSHCertSigner) PublicKey() PublicKey {
-	return s.pub
-}
-
-const sourceAddressCriticalOption = "source-address"
-
-// CertChecker does the work of verifying a certificate. Its methods
-// can be plugged into ClientConfig.HostKeyCallback and
-// ServerConfig.PublicKeyCallback. For the CertChecker to work,
-// minimally, the IsAuthority callback should be set.
-type CertChecker struct {
-	// SupportedCriticalOptions lists the CriticalOptions that the
-	// server application layer understands. These are only used
-	// for user certificates.
-	SupportedCriticalOptions []string
-
-	// IsAuthority should return true if the key is recognized as
-	// an authority. This allows for certificates to be signed by other
-	// certificates.
-	IsAuthority func(auth PublicKey) bool
-
-	// Clock is used for verifying time stamps. If nil, time.Now
-	// is used.
-	Clock func() time.Time
-
-	// UserKeyFallback is called when CertChecker.Authenticate encounters a
-	// public key that is not a certificate. It must implement validation
-	// of user keys or else, if nil, all such keys are rejected.
-	UserKeyFallback func(conn ConnMetadata, key PublicKey) (*Permissions, error)
-
-	// HostKeyFallback is called when CertChecker.CheckHostKey encounters a
-	// public key that is not a certificate. It must implement host key
-	// validation or else, if nil, all such keys are rejected.
-	HostKeyFallback func(addr string, remote net.Addr, key PublicKey) error
-
-	// IsRevoked is called for each certificate so that revocation checking
-	// can be implemented. It should return true if the given certificate
-	// is revoked and false otherwise. If nil, no certificates are
-	// considered to have been revoked.
-	IsRevoked func(cert *Certificate) bool
-}
-
-// CheckHostKey checks a host key certificate. This method can be
-// plugged into ClientConfig.HostKeyCallback.
-func (c *CertChecker) CheckHostKey(addr string, remote net.Addr, key PublicKey) error {
-	cert, ok := key.(*Certificate)
-	if !ok {
-		if c.HostKeyFallback != nil {
-			return c.HostKeyFallback(addr, remote, key)
-		}
-		return errors.New("ssh: non-certificate host key")
-	}
-	if cert.CertType != HostCert {
-		return fmt.Errorf("ssh: certificate presented as a host key has type %d", cert.CertType)
-	}
-
-	return c.CheckCert(addr, cert)
-}
-
-// Authenticate checks a user certificate. Authenticate can be used as
-// a value for ServerConfig.PublicKeyCallback.
-func (c *CertChecker) Authenticate(conn ConnMetadata, pubKey PublicKey) (*Permissions, error) {
-	cert, ok := pubKey.(*Certificate)
-	if !ok {
-		if c.UserKeyFallback != nil {
-			return c.UserKeyFallback(conn, pubKey)
-		}
-		return nil, errors.New("ssh: normal key pairs not accepted")
-	}
-
-	if cert.CertType != UserCert {
-		return nil, fmt.Errorf("ssh: cert has type %d", cert.CertType)
-	}
-
-	if err := c.CheckCert(conn.User(), cert); err != nil {
-		return nil, err
-	}
-
-	return &cert.Permissions, nil
-}
-
-// CheckCert checks CriticalOptions, ValidPrincipals, revocation, timestamp and
-// the signature of the certificate.
-func (c *CertChecker) CheckCert(principal string, cert *Certificate) error {
-	if c.IsRevoked != nil && c.IsRevoked(cert) {
-		return fmt.Errorf("ssh: certicate serial %d revoked", cert.Serial)
-	}
-
-	for opt, _ := range cert.CriticalOptions {
-		// sourceAddressCriticalOption will be enforced by
-		// serverAuthenticate
-		if opt == sourceAddressCriticalOption {
-			continue
-		}
-
-		found := false
-		for _, supp := range c.SupportedCriticalOptions {
-			if supp == opt {
-				found = true
-				break
-			}
-		}
-		if !found {
-			return fmt.Errorf("ssh: unsupported critical option %q in certificate", opt)
-		}
-	}
-
-	if len(cert.ValidPrincipals) > 0 {
-		// By default, certs are valid for all users/hosts.
-		found := false
-		for _, p := range cert.ValidPrincipals {
-			if p == principal {
-				found = true
-				break
-			}
-		}
-		if !found {
-			return fmt.Errorf("ssh: principal %q not in the set of valid principals for given certificate: %q", principal, cert.ValidPrincipals)
-		}
-	}
-
-	if !c.IsAuthority(cert.SignatureKey) {
-		return fmt.Errorf("ssh: certificate signed by unrecognized authority")
-	}
-
-	clock := c.Clock
-	if clock == nil {
-		clock = time.Now
-	}
-
-	unixNow := clock().Unix()
-	if after := int64(cert.ValidAfter); after < 0 || unixNow < int64(cert.ValidAfter) {
-		return fmt.Errorf("ssh: cert is not yet valid")
-	}
-	if before := int64(cert.ValidBefore); cert.ValidBefore != uint64(CertTimeInfinity) && (unixNow >= before || before < 0) {
-		return fmt.Errorf("ssh: cert has expired")
-	}
-	if err := cert.SignatureKey.Verify(cert.bytesForSigning(), cert.Signature); err != nil {
-		return fmt.Errorf("ssh: certificate signature does not verify")
-	}
-
-	return nil
-}
-
-// SignCert sets c.SignatureKey to the authority's public key and stores a
-// Signature, by authority, in the certificate.
-func (c *Certificate) SignCert(rand io.Reader, authority Signer) error {
-	c.Nonce = make([]byte, 32)
-	if _, err := io.ReadFull(rand, c.Nonce); err != nil {
-		return err
-	}
-	c.SignatureKey = authority.PublicKey()
-
-	sig, err := authority.Sign(rand, c.bytesForSigning())
-	if err != nil {
-		return err
-	}
-	c.Signature = sig
-	return nil
-}
-
-var certAlgoNames = map[string]string{
-	KeyAlgoRSA:      CertAlgoRSAv01,
-	KeyAlgoDSA:      CertAlgoDSAv01,
-	KeyAlgoECDSA256: CertAlgoECDSA256v01,
-	KeyAlgoECDSA384: CertAlgoECDSA384v01,
-	KeyAlgoECDSA521: CertAlgoECDSA521v01,
-	KeyAlgoED25519:  CertAlgoED25519v01,
-}
-
-// certToPrivAlgo returns the underlying algorithm for a certificate algorithm.
-// Panics if a non-certificate algorithm is passed.
-func certToPrivAlgo(algo string) string {
-	for privAlgo, pubAlgo := range certAlgoNames {
-		if pubAlgo == algo {
-			return privAlgo
-		}
-	}
-	panic("unknown cert algorithm")
-}
-
-func (cert *Certificate) bytesForSigning() []byte {
-	c2 := *cert
-	c2.Signature = nil
-	out := c2.Marshal()
-	// Drop trailing signature length.
-	return out[:len(out)-4]
-}
-
-// Marshal serializes c into OpenSSH's wire format. It is part of the
-// PublicKey interface.
-func (c *Certificate) Marshal() []byte {
-	generic := genericCertData{
-		Serial:          c.Serial,
-		CertType:        c.CertType,
-		KeyId:           c.KeyId,
-		ValidPrincipals: marshalStringList(c.ValidPrincipals),
-		ValidAfter:      uint64(c.ValidAfter),
-		ValidBefore:     uint64(c.ValidBefore),
-		CriticalOptions: marshalTuples(c.CriticalOptions),
-		Extensions:      marshalTuples(c.Extensions),
-		Reserved:        c.Reserved,
-		SignatureKey:    c.SignatureKey.Marshal(),
-	}
-	if c.Signature != nil {
-		generic.Signature = Marshal(c.Signature)
-	}
-	genericBytes := Marshal(&generic)
-	keyBytes := c.Key.Marshal()
-	_, keyBytes, _ = parseString(keyBytes)
-	prefix := Marshal(&struct {
-		Name  string
-		Nonce []byte
-		Key   []byte `ssh:"rest"`
-	}{c.Type(), c.Nonce, keyBytes})
-
-	result := make([]byte, 0, len(prefix)+len(genericBytes))
-	result = append(result, prefix...)
-	result = append(result, genericBytes...)
-	return result
-}
-
-// Type returns the key name. It is part of the PublicKey interface.
-func (c *Certificate) Type() string {
-	algo, ok := certAlgoNames[c.Key.Type()]
-	if !ok {
-		panic("unknown cert key type " + c.Key.Type())
-	}
-	return algo
-}
-
-// Verify verifies a signature against the certificate's public
-// key. It is part of the PublicKey interface.
-func (c *Certificate) Verify(data []byte, sig *Signature) error {
-	return c.Key.Verify(data, sig)
-}
-
-func parseSignatureBody(in []byte) (out *Signature, rest []byte, ok bool) {
-	format, in, ok := parseString(in)
-	if !ok {
-		return
-	}
-
-	out = &Signature{
-		Format: string(format),
-	}
-
-	if out.Blob, in, ok = parseString(in); !ok {
-		return
-	}
-
-	return out, in, ok
-}
-
-func parseSignature(in []byte) (out *Signature, rest []byte, ok bool) {
-	sigBytes, rest, ok := parseString(in)
-	if !ok {
-		return
-	}
-
-	out, trailing, ok := parseSignatureBody(sigBytes)
-	if !ok || len(trailing) > 0 {
-		return nil, nil, false
-	}
-	return
-}

vendor/golang.org/x/crypto/ssh/channel.go

@@ -1,633 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"sync"
-)
-
-const (
-	minPacketLength = 9
-	// channelMaxPacket contains the maximum number of bytes that will be
-	// sent in a single packet. As per RFC 4253, section 6.1, 32k is also
-	// the minimum.
-	channelMaxPacket = 1 << 15
-	// We follow OpenSSH here.
-	channelWindowSize = 64 * channelMaxPacket
-)
-
-// NewChannel represents an incoming request to a channel. It must either be
-// accepted for use by calling Accept, or rejected by calling Reject.
-type NewChannel interface {
-	// Accept accepts the channel creation request. It returns the Channel
-	// and a Go channel containing SSH requests. The Go channel must be
-	// serviced otherwise the Channel will hang.
-	Accept() (Channel, <-chan *Request, error)
-
-	// Reject rejects the channel creation request. After calling
-	// this, no other methods on the Channel may be called.
-	Reject(reason RejectionReason, message string) error
-
-	// ChannelType returns the type of the channel, as supplied by the
-	// client.
-	ChannelType() string
-
-	// ExtraData returns the arbitrary payload for this channel, as supplied
-	// by the client. This data is specific to the channel type.
-	ExtraData() []byte
-}
-
-// A Channel is an ordered, reliable, flow-controlled, duplex stream
-// that is multiplexed over an SSH connection.
-type Channel interface {
-	// Read reads up to len(data) bytes from the channel.
-	Read(data []byte) (int, error)
-
-	// Write writes len(data) bytes to the channel.
-	Write(data []byte) (int, error)
-
-	// Close signals end of channel use. No data may be sent after this
-	// call.
-	Close() error
-
-	// CloseWrite signals the end of sending in-band
-	// data. Requests may still be sent, and the other side may
-	// still send data
-	CloseWrite() error
-
-	// SendRequest sends a channel request.  If wantReply is true,
-	// it will wait for a reply and return the result as a
-	// boolean, otherwise the return value will be false. Channel
-	// requests are out-of-band messages so they may be sent even
-	// if the data stream is closed or blocked by flow control.
-	// If the channel is closed before a reply is returned, io.EOF
-	// is returned.
-	SendRequest(name string, wantReply bool, payload []byte) (bool, error)
-
-	// Stderr returns an io.ReadWriter that writes to this channel
-	// with the extended data type set to stderr. Stderr may
-	// safely be read and written from a different goroutine than
-	// Read and Write respectively.
-	Stderr() io.ReadWriter
-}
-
-// Request is a request sent outside of the normal stream of
-// data. Requests can either be specific to an SSH channel, or they
-// can be global.
-type Request struct {
-	Type      string
-	WantReply bool
-	Payload   []byte
-
-	ch  *channel
-	mux *mux
-}
-
-// Reply sends a response to a request. It must be called for all requests
-// where WantReply is true and is a no-op otherwise. The payload argument is
-// ignored for replies to channel-specific requests.
-func (r *Request) Reply(ok bool, payload []byte) error {
-	if !r.WantReply {
-		return nil
-	}
-
-	if r.ch == nil {
-		return r.mux.ackRequest(ok, payload)
-	}
-
-	return r.ch.ackRequest(ok)
-}
-
-// RejectionReason is an enumeration used when rejecting channel creation
-// requests. See RFC 4254, section 5.1.
-type RejectionReason uint32
-
-const (
-	Prohibited RejectionReason = iota + 1
-	ConnectionFailed
-	UnknownChannelType
-	ResourceShortage
-)
-
-// String converts the rejection reason to human readable form.
-func (r RejectionReason) String() string {
-	switch r {
-	case Prohibited:
-		return "administratively prohibited"
-	case ConnectionFailed:
-		return "connect failed"
-	case UnknownChannelType:
-		return "unknown channel type"
-	case ResourceShortage:
-		return "resource shortage"
-	}
-	return fmt.Sprintf("unknown reason %d", int(r))
-}
-
-func min(a uint32, b int) uint32 {
-	if a < uint32(b) {
-		return a
-	}
-	return uint32(b)
-}
-
-type channelDirection uint8
-
-const (
-	channelInbound channelDirection = iota
-	channelOutbound
-)
-
-// channel is an implementation of the Channel interface that works
-// with the mux class.
-type channel struct {
-	// R/O after creation
-	chanType          string
-	extraData         []byte
-	localId, remoteId uint32
-
-	// maxIncomingPayload and maxRemotePayload are the maximum
-	// payload sizes of normal and extended data packets for
-	// receiving and sending, respectively. The wire packet will
-	// be 9 or 13 bytes larger (excluding encryption overhead).
-	maxIncomingPayload uint32
-	maxRemotePayload   uint32
-
-	mux *mux
-
-	// decided is set to true if an accept or reject message has been sent
-	// (for outbound channels) or received (for inbound channels).
-	decided bool
-
-	// direction contains either channelOutbound, for channels created
-	// locally, or channelInbound, for channels created by the peer.
-	direction channelDirection
-
-	// Pending internal channel messages.
-	msg chan interface{}
-
-	// Since requests have no ID, there can be only one request
-	// with WantReply=true outstanding.  This lock is held by a
-	// goroutine that has such an outgoing request pending.
-	sentRequestMu sync.Mutex
-
-	incomingRequests chan *Request
-
-	sentEOF bool
-
-	// thread-safe data
-	remoteWin  window
-	pending    *buffer
-	extPending *buffer
-
-	// windowMu protects myWindow, the flow-control window.
-	windowMu sync.Mutex
-	myWindow uint32
-
-	// writeMu serializes calls to mux.conn.writePacket() and
-	// protects sentClose and packetPool. This mutex must be
-	// different from windowMu, as writePacket can block if there
-	// is a key exchange pending.
-	writeMu   sync.Mutex
-	sentClose bool
-
-	// packetPool has a buffer for each extended channel ID to
-	// save allocations during writes.
-	packetPool map[uint32][]byte
-}
-
-// writePacket sends a packet. If the packet is a channel close, it updates
-// sentClose. This method takes the lock c.writeMu.
-func (c *channel) writePacket(packet []byte) error {
-	c.writeMu.Lock()
-	if c.sentClose {
-		c.writeMu.Unlock()
-		return io.EOF
-	}
-	c.sentClose = (packet[0] == msgChannelClose)
-	err := c.mux.conn.writePacket(packet)
-	c.writeMu.Unlock()
-	return err
-}
-
-func (c *channel) sendMessage(msg interface{}) error {
-	if debugMux {
-		log.Printf("send(%d): %#v", c.mux.chanList.offset, msg)
-	}
-
-	p := Marshal(msg)
-	binary.BigEndian.PutUint32(p[1:], c.remoteId)
-	return c.writePacket(p)
-}
-
-// WriteExtended writes data to a specific extended stream. These streams are
-// used, for example, for stderr.
-func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err error) {
-	if c.sentEOF {
-		return 0, io.EOF
-	}
-	// 1 byte message type, 4 bytes remoteId, 4 bytes data length
-	opCode := byte(msgChannelData)
-	headerLength := uint32(9)
-	if extendedCode > 0 {
-		headerLength += 4
-		opCode = msgChannelExtendedData
-	}
-
-	c.writeMu.Lock()
-	packet := c.packetPool[extendedCode]
-	// We don't remove the buffer from packetPool, so
-	// WriteExtended calls from different goroutines will be
-	// flagged as errors by the race detector.
-	c.writeMu.Unlock()
-
-	for len(data) > 0 {
-		space := min(c.maxRemotePayload, len(data))
-		if space, err = c.remoteWin.reserve(space); err != nil {
-			return n, err
-		}
-		if want := headerLength + space; uint32(cap(packet)) < want {
-			packet = make([]byte, want)
-		} else {
-			packet = packet[:want]
-		}
-
-		todo := data[:space]
-
-		packet[0] = opCode
-		binary.BigEndian.PutUint32(packet[1:], c.remoteId)
-		if extendedCode > 0 {
-			binary.BigEndian.PutUint32(packet[5:], uint32(extendedCode))
-		}
-		binary.BigEndian.PutUint32(packet[headerLength-4:], uint32(len(todo)))
-		copy(packet[headerLength:], todo)
-		if err = c.writePacket(packet); err != nil {
-			return n, err
-		}
-
-		n += len(todo)
-		data = data[len(todo):]
-	}
-
-	c.writeMu.Lock()
-	c.packetPool[extendedCode] = packet
-	c.writeMu.Unlock()
-
-	return n, err
-}
-
-func (c *channel) handleData(packet []byte) error {
-	headerLen := 9
-	isExtendedData := packet[0] == msgChannelExtendedData
-	if isExtendedData {
-		headerLen = 13
-	}
-	if len(packet) < headerLen {
-		// malformed data packet
-		return parseError(packet[0])
-	}
-
-	var extended uint32
-	if isExtendedData {
-		extended = binary.BigEndian.Uint32(packet[5:])
-	}
-
-	length := binary.BigEndian.Uint32(packet[headerLen-4 : headerLen])
-	if length == 0 {
-		return nil
-	}
-	if length > c.maxIncomingPayload {
-		// TODO(hanwen): should send Disconnect?
-		return errors.New("ssh: incoming packet exceeds maximum payload size")
-	}
-
-	data := packet[headerLen:]
-	if length != uint32(len(data)) {
-		return errors.New("ssh: wrong packet length")
-	}
-
-	c.windowMu.Lock()
-	if c.myWindow < length {
-		c.windowMu.Unlock()
-		// TODO(hanwen): should send Disconnect with reason?
-		return errors.New("ssh: remote side wrote too much")
-	}
-	c.myWindow -= length
-	c.windowMu.Unlock()
-
-	if extended == 1 {
-		c.extPending.write(data)
-	} else if extended > 0 {
-		// discard other extended data.
-	} else {
-		c.pending.write(data)
-	}
-	return nil
-}
-
-func (c *channel) adjustWindow(n uint32) error {
-	c.windowMu.Lock()
-	// Since myWindow is managed on our side, and can never exceed
-	// the initial window setting, we don't worry about overflow.
-	c.myWindow += uint32(n)
-	c.windowMu.Unlock()
-	return c.sendMessage(windowAdjustMsg{
-		AdditionalBytes: uint32(n),
-	})
-}
-
-func (c *channel) ReadExtended(data []byte, extended uint32) (n int, err error) {
-	switch extended {
-	case 1:
-		n, err = c.extPending.Read(data)
-	case 0:
-		n, err = c.pending.Read(data)
-	default:
-		return 0, fmt.Errorf("ssh: extended code %d unimplemented", extended)
-	}
-
-	if n > 0 {
-		err = c.adjustWindow(uint32(n))
-		// sendWindowAdjust can return io.EOF if the remote
-		// peer has closed the connection, however we want to
-		// defer forwarding io.EOF to the caller of Read until
-		// the buffer has been drained.
-		if n > 0 && err == io.EOF {
-			err = nil
-		}
-	}
-
-	return n, err
-}
-
-func (c *channel) close() {
-	c.pending.eof()
-	c.extPending.eof()
-	close(c.msg)
-	close(c.incomingRequests)
-	c.writeMu.Lock()
-	// This is not necessary for a normal channel teardown, but if
-	// there was another error, it is.
-	c.sentClose = true
-	c.writeMu.Unlock()
-	// Unblock writers.
-	c.remoteWin.close()
-}
-
-// responseMessageReceived is called when a success or failure message is
-// received on a channel to check that such a message is reasonable for the
-// given channel.
-func (c *channel) responseMessageReceived() error {
-	if c.direction == channelInbound {
-		return errors.New("ssh: channel response message received on inbound channel")
-	}
-	if c.decided {
-		return errors.New("ssh: duplicate response received for channel")
-	}
-	c.decided = true
-	return nil
-}
-
-func (c *channel) handlePacket(packet []byte) error {
-	switch packet[0] {
-	case msgChannelData, msgChannelExtendedData:
-		return c.handleData(packet)
-	case msgChannelClose:
-		c.sendMessage(channelCloseMsg{PeersId: c.remoteId})
-		c.mux.chanList.remove(c.localId)
-		c.close()
-		return nil
-	case msgChannelEOF:
-		// RFC 4254 is mute on how EOF affects dataExt messages but
-		// it is logical to signal EOF at the same time.
-		c.extPending.eof()
-		c.pending.eof()
-		return nil
-	}
-
-	decoded, err := decode(packet)
-	if err != nil {
-		return err
-	}
-
-	switch msg := decoded.(type) {
-	case *channelOpenFailureMsg:
-		if err := c.responseMessageReceived(); err != nil {
-			return err
-		}
-		c.mux.chanList.remove(msg.PeersId)
-		c.msg <- msg
-	case *channelOpenConfirmMsg:
-		if err := c.responseMessageReceived(); err != nil {
-			return err
-		}
-		if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 {
-			return fmt.Errorf("ssh: invalid MaxPacketSize %d from peer", msg.MaxPacketSize)
-		}
-		c.remoteId = msg.MyId
-		c.maxRemotePayload = msg.MaxPacketSize
-		c.remoteWin.add(msg.MyWindow)
-		c.msg <- msg
-	case *windowAdjustMsg:
-		if !c.remoteWin.add(msg.AdditionalBytes) {
-			return fmt.Errorf("ssh: invalid window update for %d bytes", msg.AdditionalBytes)
-		}
-	case *channelRequestMsg:
-		req := Request{
-			Type:      msg.Request,
-			WantReply: msg.WantReply,
-			Payload:   msg.RequestSpecificData,
-			ch:        c,
-		}
-
-		c.incomingRequests <- &req
-	default:
-		c.msg <- msg
-	}
-	return nil
-}
-
-func (m *mux) newChannel(chanType string, direction channelDirection, extraData []byte) *channel {
-	ch := &channel{
-		remoteWin:        window{Cond: newCond()},
-		myWindow:         channelWindowSize,
-		pending:          newBuffer(),
-		extPending:       newBuffer(),
-		direction:        direction,
-		incomingRequests: make(chan *Request, chanSize),
-		msg:              make(chan interface{}, chanSize),
-		chanType:         chanType,
-		extraData:        extraData,
-		mux:              m,
-		packetPool:       make(map[uint32][]byte),
-	}
-	ch.localId = m.chanList.add(ch)
-	return ch
-}
-
-var errUndecided = errors.New("ssh: must Accept or Reject channel")
-var errDecidedAlready = errors.New("ssh: can call Accept or Reject only once")
-
-type extChannel struct {
-	code uint32
-	ch   *channel
-}
-
-func (e *extChannel) Write(data []byte) (n int, err error) {
-	return e.ch.WriteExtended(data, e.code)
-}
-
-func (e *extChannel) Read(data []byte) (n int, err error) {
-	return e.ch.ReadExtended(data, e.code)
-}
-
-func (c *channel) Accept() (Channel, <-chan *Request, error) {
-	if c.decided {
-		return nil, nil, errDecidedAlready
-	}
-	c.maxIncomingPayload = channelMaxPacket
-	confirm := channelOpenConfirmMsg{
-		PeersId:       c.remoteId,
-		MyId:          c.localId,
-		MyWindow:      c.myWindow,
-		MaxPacketSize: c.maxIncomingPayload,
-	}
-	c.decided = true
-	if err := c.sendMessage(confirm); err != nil {
-		return nil, nil, err
-	}
-
-	return c, c.incomingRequests, nil
-}
-
-func (ch *channel) Reject(reason RejectionReason, message string) error {
-	if ch.decided {
-		return errDecidedAlready
-	}
-	reject := channelOpenFailureMsg{
-		PeersId:  ch.remoteId,
-		Reason:   reason,
-		Message:  message,
-		Language: "en",
-	}
-	ch.decided = true
-	return ch.sendMessage(reject)
-}
-
-func (ch *channel) Read(data []byte) (int, error) {
-	if !ch.decided {
-		return 0, errUndecided
-	}
-	return ch.ReadExtended(data, 0)
-}
-
-func (ch *channel) Write(data []byte) (int, error) {
-	if !ch.decided {
-		return 0, errUndecided
-	}
-	return ch.WriteExtended(data, 0)
-}
-
-func (ch *channel) CloseWrite() error {
-	if !ch.decided {
-		return errUndecided
-	}
-	ch.sentEOF = true
-	return ch.sendMessage(channelEOFMsg{
-		PeersId: ch.remoteId})
-}
-
-func (ch *channel) Close() error {
-	if !ch.decided {
-		return errUndecided
-	}
-
-	return ch.sendMessage(channelCloseMsg{
-		PeersId: ch.remoteId})
-}
-
-// Extended returns an io.ReadWriter that sends and receives data on the given,
-// SSH extended stream. Such streams are used, for example, for stderr.
-func (ch *channel) Extended(code uint32) io.ReadWriter {
-	if !ch.decided {
-		return nil
-	}
-	return &extChannel{code, ch}
-}
-
-func (ch *channel) Stderr() io.ReadWriter {
-	return ch.Extended(1)
-}
-
-func (ch *channel) SendRequest(name string, wantReply bool, payload []byte) (bool, error) {
-	if !ch.decided {
-		return false, errUndecided
-	}
-
-	if wantReply {
-		ch.sentRequestMu.Lock()
-		defer ch.sentRequestMu.Unlock()
-	}
-
-	msg := channelRequestMsg{
-		PeersId:             ch.remoteId,
-		Request:             name,
-		WantReply:           wantReply,
-		RequestSpecificData: payload,
-	}
-
-	if err := ch.sendMessage(msg); err != nil {
-		return false, err
-	}
-
-	if wantReply {
-		m, ok := (<-ch.msg)
-		if !ok {
-			return false, io.EOF
-		}
-		switch m.(type) {
-		case *channelRequestFailureMsg:
-			return false, nil
-		case *channelRequestSuccessMsg:
-			return true, nil
-		default:
-			return false, fmt.Errorf("ssh: unexpected response to channel request: %#v", m)
-		}
-	}
-
-	return false, nil
-}
-
-// ackRequest either sends an ack or nack to the channel request.
-func (ch *channel) ackRequest(ok bool) error {
-	if !ch.decided {
-		return errUndecided
-	}
-
-	var msg interface{}
-	if !ok {
-		msg = channelRequestFailureMsg{
-			PeersId: ch.remoteId,
-		}
-	} else {
-		msg = channelRequestSuccessMsg{
-			PeersId: ch.remoteId,
-		}
-	}
-	return ch.sendMessage(msg)
-}
-
-func (ch *channel) ChannelType() string {
-	return ch.chanType
-}
-
-func (ch *channel) ExtraData() []byte {
-	return ch.extraData
-}

vendor/golang.org/x/crypto/ssh/cipher.go

@@ -1,627 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/des"
-	"crypto/rc4"
-	"crypto/subtle"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-	"io/ioutil"
-)
-
-const (
-	packetSizeMultiple = 16 // TODO(huin) this should be determined by the cipher.
-
-	// RFC 4253 section 6.1 defines a minimum packet size of 32768 that implementations
-	// MUST be able to process (plus a few more kilobytes for padding and mac). The RFC
-	// indicates implementations SHOULD be able to handle larger packet sizes, but then
-	// waffles on about reasonable limits.
-	//
-	// OpenSSH caps their maxPacket at 256kB so we choose to do
-	// the same. maxPacket is also used to ensure that uint32
-	// length fields do not overflow, so it should remain well
-	// below 4G.
-	maxPacket = 256 * 1024
-)
-
-// noneCipher implements cipher.Stream and provides no encryption. It is used
-// by the transport before the first key-exchange.
-type noneCipher struct{}
-
-func (c noneCipher) XORKeyStream(dst, src []byte) {
-	copy(dst, src)
-}
-
-func newAESCTR(key, iv []byte) (cipher.Stream, error) {
-	c, err := aes.NewCipher(key)
-	if err != nil {
-		return nil, err
-	}
-	return cipher.NewCTR(c, iv), nil
-}
-
-func newRC4(key, iv []byte) (cipher.Stream, error) {
-	return rc4.NewCipher(key)
-}
-
-type streamCipherMode struct {
-	keySize    int
-	ivSize     int
-	skip       int
-	createFunc func(key, iv []byte) (cipher.Stream, error)
-}
-
-func (c *streamCipherMode) createStream(key, iv []byte) (cipher.Stream, error) {
-	if len(key) < c.keySize {
-		panic("ssh: key length too small for cipher")
-	}
-	if len(iv) < c.ivSize {
-		panic("ssh: iv too small for cipher")
-	}
-
-	stream, err := c.createFunc(key[:c.keySize], iv[:c.ivSize])
-	if err != nil {
-		return nil, err
-	}
-
-	var streamDump []byte
-	if c.skip > 0 {
-		streamDump = make([]byte, 512)
-	}
-
-	for remainingToDump := c.skip; remainingToDump > 0; {
-		dumpThisTime := remainingToDump
-		if dumpThisTime > len(streamDump) {
-			dumpThisTime = len(streamDump)
-		}
-		stream.XORKeyStream(streamDump[:dumpThisTime], streamDump[:dumpThisTime])
-		remainingToDump -= dumpThisTime
-	}
-
-	return stream, nil
-}
-
-// cipherModes documents properties of supported ciphers. Ciphers not included
-// are not supported and will not be negotiated, even if explicitly requested in
-// ClientConfig.Crypto.Ciphers.
-var cipherModes = map[string]*streamCipherMode{
-	// Ciphers from RFC4344, which introduced many CTR-based ciphers. Algorithms
-	// are defined in the order specified in the RFC.
-	"aes128-ctr": {16, aes.BlockSize, 0, newAESCTR},
-	"aes192-ctr": {24, aes.BlockSize, 0, newAESCTR},
-	"aes256-ctr": {32, aes.BlockSize, 0, newAESCTR},
-
-	// Ciphers from RFC4345, which introduces security-improved arcfour ciphers.
-	// They are defined in the order specified in the RFC.
-	"arcfour128": {16, 0, 1536, newRC4},
-	"arcfour256": {32, 0, 1536, newRC4},
-
-	// Cipher defined in RFC 4253, which describes SSH Transport Layer Protocol.
-	// Note that this cipher is not safe, as stated in RFC 4253: "Arcfour (and
-	// RC4) has problems with weak keys, and should be used with caution."
-	// RFC4345 introduces improved versions of Arcfour.
-	"arcfour": {16, 0, 0, newRC4},
-
-	// AES-GCM is not a stream cipher, so it is constructed with a
-	// special case. If we add any more non-stream ciphers, we
-	// should invest a cleaner way to do this.
-	gcmCipherID: {16, 12, 0, nil},
-
-	// CBC mode is insecure and so is not included in the default config.
-	// (See http://www.isg.rhul.ac.uk/~kp/SandPfinal.pdf). If absolutely
-	// needed, it's possible to specify a custom Config to enable it.
-	// You should expect that an active attacker can recover plaintext if
-	// you do.
-	aes128cbcID: {16, aes.BlockSize, 0, nil},
-
-	// 3des-cbc is insecure and is disabled by default.
-	tripledescbcID: {24, des.BlockSize, 0, nil},
-}
-
-// prefixLen is the length of the packet prefix that contains the packet length
-// and number of padding bytes.
-const prefixLen = 5
-
-// streamPacketCipher is a packetCipher using a stream cipher.
-type streamPacketCipher struct {
-	mac    hash.Hash
-	cipher cipher.Stream
-	etm    bool
-
-	// The following members are to avoid per-packet allocations.
-	prefix      [prefixLen]byte
-	seqNumBytes [4]byte
-	padding     [2 * packetSizeMultiple]byte
-	packetData  []byte
-	macResult   []byte
-}
-
-// readPacket reads and decrypt a single packet from the reader argument.
-func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
-	if _, err := io.ReadFull(r, s.prefix[:]); err != nil {
-		return nil, err
-	}
-
-	var encryptedPaddingLength [1]byte
-	if s.mac != nil && s.etm {
-		copy(encryptedPaddingLength[:], s.prefix[4:5])
-		s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5])
-	} else {
-		s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
-	}
-
-	length := binary.BigEndian.Uint32(s.prefix[0:4])
-	paddingLength := uint32(s.prefix[4])
-
-	var macSize uint32
-	if s.mac != nil {
-		s.mac.Reset()
-		binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum)
-		s.mac.Write(s.seqNumBytes[:])
-		if s.etm {
-			s.mac.Write(s.prefix[:4])
-			s.mac.Write(encryptedPaddingLength[:])
-		} else {
-			s.mac.Write(s.prefix[:])
-		}
-		macSize = uint32(s.mac.Size())
-	}
-
-	if length <= paddingLength+1 {
-		return nil, errors.New("ssh: invalid packet length, packet too small")
-	}
-
-	if length > maxPacket {
-		return nil, errors.New("ssh: invalid packet length, packet too large")
-	}
-
-	// the maxPacket check above ensures that length-1+macSize
-	// does not overflow.
-	if uint32(cap(s.packetData)) < length-1+macSize {
-		s.packetData = make([]byte, length-1+macSize)
-	} else {
-		s.packetData = s.packetData[:length-1+macSize]
-	}
-
-	if _, err := io.ReadFull(r, s.packetData); err != nil {
-		return nil, err
-	}
-	mac := s.packetData[length-1:]
-	data := s.packetData[:length-1]
-
-	if s.mac != nil && s.etm {
-		s.mac.Write(data)
-	}
-
-	s.cipher.XORKeyStream(data, data)
-
-	if s.mac != nil {
-		if !s.etm {
-			s.mac.Write(data)
-		}
-		s.macResult = s.mac.Sum(s.macResult[:0])
-		if subtle.ConstantTimeCompare(s.macResult, mac) != 1 {
-			return nil, errors.New("ssh: MAC failure")
-		}
-	}
-
-	return s.packetData[:length-paddingLength-1], nil
-}
-
-// writePacket encrypts and sends a packet of data to the writer argument
-func (s *streamPacketCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
-	if len(packet) > maxPacket {
-		return errors.New("ssh: packet too large")
-	}
-
-	aadlen := 0
-	if s.mac != nil && s.etm {
-		// packet length is not encrypted for EtM modes
-		aadlen = 4
-	}
-
-	paddingLength := packetSizeMultiple - (prefixLen+len(packet)-aadlen)%packetSizeMultiple
-	if paddingLength < 4 {
-		paddingLength += packetSizeMultiple
-	}
-
-	length := len(packet) + 1 + paddingLength
-	binary.BigEndian.PutUint32(s.prefix[:], uint32(length))
-	s.prefix[4] = byte(paddingLength)
-	padding := s.padding[:paddingLength]
-	if _, err := io.ReadFull(rand, padding); err != nil {
-		return err
-	}
-
-	if s.mac != nil {
-		s.mac.Reset()
-		binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum)
-		s.mac.Write(s.seqNumBytes[:])
-
-		if s.etm {
-			// For EtM algorithms, the packet length must stay unencrypted,
-			// but the following data (padding length) must be encrypted
-			s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5])
-		}
-
-		s.mac.Write(s.prefix[:])
-
-		if !s.etm {
-			// For non-EtM algorithms, the algorithm is applied on unencrypted data
-			s.mac.Write(packet)
-			s.mac.Write(padding)
-		}
-	}
-
-	if !(s.mac != nil && s.etm) {
-		// For EtM algorithms, the padding length has already been encrypted
-		// and the packet length must remain unencrypted
-		s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
-	}
-
-	s.cipher.XORKeyStream(packet, packet)
-	s.cipher.XORKeyStream(padding, padding)
-
-	if s.mac != nil && s.etm {
-		// For EtM algorithms, packet and padding must be encrypted
-		s.mac.Write(packet)
-		s.mac.Write(padding)
-	}
-
-	if _, err := w.Write(s.prefix[:]); err != nil {
-		return err
-	}
-	if _, err := w.Write(packet); err != nil {
-		return err
-	}
-	if _, err := w.Write(padding); err != nil {
-		return err
-	}
-
-	if s.mac != nil {
-		s.macResult = s.mac.Sum(s.macResult[:0])
-		if _, err := w.Write(s.macResult); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type gcmCipher struct {
-	aead   cipher.AEAD
-	prefix [4]byte
-	iv     []byte
-	buf    []byte
-}
-
-func newGCMCipher(iv, key, macKey []byte) (packetCipher, error) {
-	c, err := aes.NewCipher(key)
-	if err != nil {
-		return nil, err
-	}
-
-	aead, err := cipher.NewGCM(c)
-	if err != nil {
-		return nil, err
-	}
-
-	return &gcmCipher{
-		aead: aead,
-		iv:   iv,
-	}, nil
-}
-
-const gcmTagSize = 16
-
-func (c *gcmCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
-	// Pad out to multiple of 16 bytes. This is different from the
-	// stream cipher because that encrypts the length too.
-	padding := byte(packetSizeMultiple - (1+len(packet))%packetSizeMultiple)
-	if padding < 4 {
-		padding += packetSizeMultiple
-	}
-
-	length := uint32(len(packet) + int(padding) + 1)
-	binary.BigEndian.PutUint32(c.prefix[:], length)
-	if _, err := w.Write(c.prefix[:]); err != nil {
-		return err
-	}
-
-	if cap(c.buf) < int(length) {
-		c.buf = make([]byte, length)
-	} else {
-		c.buf = c.buf[:length]
-	}
-
-	c.buf[0] = padding
-	copy(c.buf[1:], packet)
-	if _, err := io.ReadFull(rand, c.buf[1+len(packet):]); err != nil {
-		return err
-	}
-	c.buf = c.aead.Seal(c.buf[:0], c.iv, c.buf, c.prefix[:])
-	if _, err := w.Write(c.buf); err != nil {
-		return err
-	}
-	c.incIV()
-
-	return nil
-}
-
-func (c *gcmCipher) incIV() {
-	for i := 4 + 7; i >= 4; i-- {
-		c.iv[i]++
-		if c.iv[i] != 0 {
-			break
-		}
-	}
-}
-
-func (c *gcmCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
-	if _, err := io.ReadFull(r, c.prefix[:]); err != nil {
-		return nil, err
-	}
-	length := binary.BigEndian.Uint32(c.prefix[:])
-	if length > maxPacket {
-		return nil, errors.New("ssh: max packet length exceeded.")
-	}
-
-	if cap(c.buf) < int(length+gcmTagSize) {
-		c.buf = make([]byte, length+gcmTagSize)
-	} else {
-		c.buf = c.buf[:length+gcmTagSize]
-	}
-
-	if _, err := io.ReadFull(r, c.buf); err != nil {
-		return nil, err
-	}
-
-	plain, err := c.aead.Open(c.buf[:0], c.iv, c.buf, c.prefix[:])
-	if err != nil {
-		return nil, err
-	}
-	c.incIV()
-
-	padding := plain[0]
-	if padding < 4 || padding >= 20 {
-		return nil, fmt.Errorf("ssh: illegal padding %d", padding)
-	}
-
-	if int(padding+1) >= len(plain) {
-		return nil, fmt.Errorf("ssh: padding %d too large", padding)
-	}
-	plain = plain[1 : length-uint32(padding)]
-	return plain, nil
-}
-
-// cbcCipher implements aes128-cbc cipher defined in RFC 4253 section 6.1
-type cbcCipher struct {
-	mac       hash.Hash
-	macSize   uint32
-	decrypter cipher.BlockMode
-	encrypter cipher.BlockMode
-
-	// The following members are to avoid per-packet allocations.
-	seqNumBytes [4]byte
-	packetData  []byte
-	macResult   []byte
-
-	// Amount of data we should still read to hide which
-	// verification error triggered.
-	oracleCamouflage uint32
-}
-
-func newCBCCipher(c cipher.Block, iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
-	cbc := &cbcCipher{
-		mac:        macModes[algs.MAC].new(macKey),
-		decrypter:  cipher.NewCBCDecrypter(c, iv),
-		encrypter:  cipher.NewCBCEncrypter(c, iv),
-		packetData: make([]byte, 1024),
-	}
-	if cbc.mac != nil {
-		cbc.macSize = uint32(cbc.mac.Size())
-	}
-
-	return cbc, nil
-}
-
-func newAESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
-	c, err := aes.NewCipher(key)
-	if err != nil {
-		return nil, err
-	}
-
-	cbc, err := newCBCCipher(c, iv, key, macKey, algs)
-	if err != nil {
-		return nil, err
-	}
-
-	return cbc, nil
-}
-
-func newTripleDESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
-	c, err := des.NewTripleDESCipher(key)
-	if err != nil {
-		return nil, err
-	}
-
-	cbc, err := newCBCCipher(c, iv, key, macKey, algs)
-	if err != nil {
-		return nil, err
-	}
-
-	return cbc, nil
-}
-
-func maxUInt32(a, b int) uint32 {
-	if a > b {
-		return uint32(a)
-	}
-	return uint32(b)
-}
-
-const (
-	cbcMinPacketSizeMultiple = 8
-	cbcMinPacketSize         = 16
-	cbcMinPaddingSize        = 4
-)
-
-// cbcError represents a verification error that may leak information.
-type cbcError string
-
-func (e cbcError) Error() string { return string(e) }
-
-func (c *cbcCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
-	p, err := c.readPacketLeaky(seqNum, r)
-	if err != nil {
-		if _, ok := err.(cbcError); ok {
-			// Verification error: read a fixed amount of
-			// data, to make distinguishing between
-			// failing MAC and failing length check more
-			// difficult.
-			io.CopyN(ioutil.Discard, r, int64(c.oracleCamouflage))
-		}
-	}
-	return p, err
-}
-
-func (c *cbcCipher) readPacketLeaky(seqNum uint32, r io.Reader) ([]byte, error) {
-	blockSize := c.decrypter.BlockSize()
-
-	// Read the header, which will include some of the subsequent data in the
-	// case of block ciphers - this is copied back to the payload later.
-	// How many bytes of payload/padding will be read with this first read.
-	firstBlockLength := uint32((prefixLen + blockSize - 1) / blockSize * blockSize)
-	firstBlock := c.packetData[:firstBlockLength]
-	if _, err := io.ReadFull(r, firstBlock); err != nil {
-		return nil, err
-	}
-
-	c.oracleCamouflage = maxPacket + 4 + c.macSize - firstBlockLength
-
-	c.decrypter.CryptBlocks(firstBlock, firstBlock)
-	length := binary.BigEndian.Uint32(firstBlock[:4])
-	if length > maxPacket {
-		return nil, cbcError("ssh: packet too large")
-	}
-	if length+4 < maxUInt32(cbcMinPacketSize, blockSize) {
-		// The minimum size of a packet is 16 (or the cipher block size, whichever
-		// is larger) bytes.
-		return nil, cbcError("ssh: packet too small")
-	}
-	// The length of the packet (including the length field but not the MAC) must
-	// be a multiple of the block size or 8, whichever is larger.
-	if (length+4)%maxUInt32(cbcMinPacketSizeMultiple, blockSize) != 0 {
-		return nil, cbcError("ssh: invalid packet length multiple")
-	}
-
-	paddingLength := uint32(firstBlock[4])
-	if paddingLength < cbcMinPaddingSize || length <= paddingLength+1 {
-		return nil, cbcError("ssh: invalid packet length")
-	}
-
-	// Positions within the c.packetData buffer:
-	macStart := 4 + length
-	paddingStart := macStart - paddingLength
-
-	// Entire packet size, starting before length, ending at end of mac.
-	entirePacketSize := macStart + c.macSize
-
-	// Ensure c.packetData is large enough for the entire packet data.
-	if uint32(cap(c.packetData)) < entirePacketSize {
-		// Still need to upsize and copy, but this should be rare at runtime, only
-		// on upsizing the packetData buffer.
-		c.packetData = make([]byte, entirePacketSize)
-		copy(c.packetData, firstBlock)
-	} else {
-		c.packetData = c.packetData[:entirePacketSize]
-	}
-
-	if n, err := io.ReadFull(r, c.packetData[firstBlockLength:]); err != nil {
-		return nil, err
-	} else {
-		c.oracleCamouflage -= uint32(n)
-	}
-
-	remainingCrypted := c.packetData[firstBlockLength:macStart]
-	c.decrypter.CryptBlocks(remainingCrypted, remainingCrypted)
-
-	mac := c.packetData[macStart:]
-	if c.mac != nil {
-		c.mac.Reset()
-		binary.BigEndian.PutUint32(c.seqNumBytes[:], seqNum)
-		c.mac.Write(c.seqNumBytes[:])
-		c.mac.Write(c.packetData[:macStart])
-		c.macResult = c.mac.Sum(c.macResult[:0])
-		if subtle.ConstantTimeCompare(c.macResult, mac) != 1 {
-			return nil, cbcError("ssh: MAC failure")
-		}
-	}
-
-	return c.packetData[prefixLen:paddingStart], nil
-}
-
-func (c *cbcCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
-	effectiveBlockSize := maxUInt32(cbcMinPacketSizeMultiple, c.encrypter.BlockSize())
-
-	// Length of encrypted portion of the packet (header, payload, padding).
-	// Enforce minimum padding and packet size.
-	encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPaddingSize)
-	// Enforce block size.
-	encLength = (encLength + effectiveBlockSize - 1) / effectiveBlockSize * effectiveBlockSize
-
-	length := encLength - 4
-	paddingLength := int(length) - (1 + len(packet))
-
-	// Overall buffer contains: header, payload, padding, mac.
-	// Space for the MAC is reserved in the capacity but not the slice length.
-	bufferSize := encLength + c.macSize
-	if uint32(cap(c.packetData)) < bufferSize {
-		c.packetData = make([]byte, encLength, bufferSize)
-	} else {
-		c.packetData = c.packetData[:encLength]
-	}
-
-	p := c.packetData
-
-	// Packet header.
-	binary.BigEndian.PutUint32(p, length)
-	p = p[4:]
-	p[0] = byte(paddingLength)
-
-	// Payload.
-	p = p[1:]
-	copy(p, packet)
-
-	// Padding.
-	p = p[len(packet):]
-	if _, err := io.ReadFull(rand, p); err != nil {
-		return err
-	}
-
-	if c.mac != nil {
-		c.mac.Reset()
-		binary.BigEndian.PutUint32(c.seqNumBytes[:], seqNum)
-		c.mac.Write(c.seqNumBytes[:])
-		c.mac.Write(c.packetData)
-		// The MAC is now appended into the capacity reserved for it earlier.
-		c.packetData = c.mac.Sum(c.packetData)
-	}
-
-	c.encrypter.CryptBlocks(c.packetData[:encLength], c.packetData[:encLength])
-
-	if _, err := w.Write(c.packetData); err != nil {
-		return err
-	}
-
-	return nil
-}

vendor/golang.org/x/crypto/ssh/client.go

@@ -1,211 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"errors"
-	"fmt"
-	"net"
-	"sync"
-	"time"
-)
-
-// Client implements a traditional SSH client that supports shells,
-// subprocesses, port forwarding and tunneled dialing.
-type Client struct {
-	Conn
-
-	forwards        forwardList // forwarded tcpip connections from the remote side
-	mu              sync.Mutex
-	channelHandlers map[string]chan NewChannel
-}
-
-// HandleChannelOpen returns a channel on which NewChannel requests
-// for the given type are sent. If the type already is being handled,
-// nil is returned. The channel is closed when the connection is closed.
-func (c *Client) HandleChannelOpen(channelType string) <-chan NewChannel {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	if c.channelHandlers == nil {
-		// The SSH channel has been closed.
-		c := make(chan NewChannel)
-		close(c)
-		return c
-	}
-
-	ch := c.channelHandlers[channelType]
-	if ch != nil {
-		return nil
-	}
-
-	ch = make(chan NewChannel, chanSize)
-	c.channelHandlers[channelType] = ch
-	return ch
-}
-
-// NewClient creates a Client on top of the given connection.
-func NewClient(c Conn, chans <-chan NewChannel, reqs <-chan *Request) *Client {
-	conn := &Client{
-		Conn:            c,
-		channelHandlers: make(map[string]chan NewChannel, 1),
-	}
-
-	go conn.handleGlobalRequests(reqs)
-	go conn.handleChannelOpens(chans)
-	go func() {
-		conn.Wait()
-		conn.forwards.closeAll()
-	}()
-	go conn.forwards.handleChannels(conn.HandleChannelOpen("forwarded-tcpip"))
-	return conn
-}
-
-// NewClientConn establishes an authenticated SSH connection using c
-// as the underlying transport.  The Request and NewChannel channels
-// must be serviced or the connection will hang.
-func NewClientConn(c net.Conn, addr string, config *ClientConfig) (Conn, <-chan NewChannel, <-chan *Request, error) {
-	fullConf := *config
-	fullConf.SetDefaults()
-	conn := &connection{
-		sshConn: sshConn{conn: c},
-	}
-
-	if err := conn.clientHandshake(addr, &fullConf); err != nil {
-		c.Close()
-		return nil, nil, nil, fmt.Errorf("ssh: handshake failed: %v", err)
-	}
-	conn.mux = newMux(conn.transport)
-	return conn, conn.mux.incomingChannels, conn.mux.incomingRequests, nil
-}
-
-// clientHandshake performs the client side key exchange. See RFC 4253 Section
-// 7.
-func (c *connection) clientHandshake(dialAddress string, config *ClientConfig) error {
-	if config.ClientVersion != "" {
-		c.clientVersion = []byte(config.ClientVersion)
-	} else {
-		c.clientVersion = []byte(packageVersion)
-	}
-	var err error
-	c.serverVersion, err = exchangeVersions(c.sshConn.conn, c.clientVersion)
-	if err != nil {
-		return err
-	}
-
-	c.transport = newClientTransport(
-		newTransport(c.sshConn.conn, config.Rand, true /* is client */),
-		c.clientVersion, c.serverVersion, config, dialAddress, c.sshConn.RemoteAddr())
-	if err := c.transport.waitSession(); err != nil {
-		return err
-	}
-
-	c.sessionID = c.transport.getSessionID()
-	return c.clientAuthenticate(config)
-}
-
-// verifyHostKeySignature verifies the host key obtained in the key
-// exchange.
-func verifyHostKeySignature(hostKey PublicKey, result *kexResult) error {
-	sig, rest, ok := parseSignatureBody(result.Signature)
-	if len(rest) > 0 || !ok {
-		return errors.New("ssh: signature parse error")
-	}
-
-	return hostKey.Verify(result.H, sig)
-}
-
-// NewSession opens a new Session for this client. (A session is a remote
-// execution of a program.)
-func (c *Client) NewSession() (*Session, error) {
-	ch, in, err := c.OpenChannel("session", nil)
-	if err != nil {
-		return nil, err
-	}
-	return newSession(ch, in)
-}
-
-func (c *Client) handleGlobalRequests(incoming <-chan *Request) {
-	for r := range incoming {
-		// This handles keepalive messages and matches
-		// the behaviour of OpenSSH.
-		r.Reply(false, nil)
-	}
-}
-
-// handleChannelOpens channel open messages from the remote side.
-func (c *Client) handleChannelOpens(in <-chan NewChannel) {
-	for ch := range in {
-		c.mu.Lock()
-		handler := c.channelHandlers[ch.ChannelType()]
-		c.mu.Unlock()
-
-		if handler != nil {
-			handler <- ch
-		} else {
-			ch.Reject(UnknownChannelType, fmt.Sprintf("unknown channel type: %v", ch.ChannelType()))
-		}
-	}
-
-	c.mu.Lock()
-	for _, ch := range c.channelHandlers {
-		close(ch)
-	}
-	c.channelHandlers = nil
-	c.mu.Unlock()
-}
-
-// Dial starts a client connection to the given SSH server. It is a
-// convenience function that connects to the given network address,
-// initiates the SSH handshake, and then sets up a Client.  For access
-// to incoming channels and requests, use net.Dial with NewClientConn
-// instead.
-func Dial(network, addr string, config *ClientConfig) (*Client, error) {
-	conn, err := net.DialTimeout(network, addr, config.Timeout)
-	if err != nil {
-		return nil, err
-	}
-	c, chans, reqs, err := NewClientConn(conn, addr, config)
-	if err != nil {
-		return nil, err
-	}
-	return NewClient(c, chans, reqs), nil
-}
-
-// A ClientConfig structure is used to configure a Client. It must not be
-// modified after having been passed to an SSH function.
-type ClientConfig struct {
-	// Config contains configuration that is shared between clients and
-	// servers.
-	Config
-
-	// User contains the username to authenticate as.
-	User string
-
-	// Auth contains possible authentication methods to use with the
-	// server. Only the first instance of a particular RFC 4252 method will
-	// be used during authentication.
-	Auth []AuthMethod
-
-	// HostKeyCallback, if not nil, is called during the cryptographic
-	// handshake to validate the server's host key. A nil HostKeyCallback
-	// implies that all host keys are accepted.
-	HostKeyCallback func(hostname string, remote net.Addr, key PublicKey) error
-
-	// ClientVersion contains the version identification string that will
-	// be used for the connection. If empty, a reasonable default is used.
-	ClientVersion string
-
-	// HostKeyAlgorithms lists the key types that the client will
-	// accept from the server as host key, in order of
-	// preference. If empty, a reasonable default is used. Any
-	// string returned from PublicKey.Type method may be used, or
-	// any of the CertAlgoXxxx and KeyAlgoXxxx constants.
-	HostKeyAlgorithms []string
-
-	// Timeout is the maximum amount of time for the TCP connection to establish.
-	//
-	// A Timeout of zero means no timeout.
-	Timeout time.Duration
-}