initial commit

.gitignore

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+.idea

.travis.yml

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+---
+sudo: required
+
+services:
+  - docker
+
+language: generic
+
+script:
+  - if [ "$TRAVIS_BRANCH" == "master" ]; then
+    docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD";
+    docker build . -t robertstettner/drone-npm-auth;
+    docker push robertstettner/drone-npm-auth;
+    fi

Dockerfile

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+FROM node:6.9.1-slim
+
+# Install packages
+RUN apt-get update && apt-get install -yq \
+    git \
+    expect-dev
+
+ADD bin/ /bin
+
+CMD npm-auth

LICENSE.txt

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+The MIT License (MIT)
+
+Copyright 2017 (c) Robert Stettner <robert.stettner@gmail.com> (https://github.com/robertstettner)
+
+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.

README.md

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+# drone-npm-auth
+[![Build Status](https://travis-ci.org/robertstettner/drone-npm-auth.svg?branch=master)](https://travis-ci.org/robertstettner/drone-npm-auth)
+
+Drone plugin for authenticating into NPM to install private dependencies.
+
+## Configuration
+
+The following parameters are used to configure the plugin:
+
+- `username`: The NPM username. Required.
+- `password`: The NPM password. Required.
+- `email`: The NPM email. Required.
+- `registry`: The NPM registry. Defaults to the default NPM registry.
+- `scope`: Scope of the NPM authentication. Optional.
+- `path`: Output path of the generated `.npmrc` file. Defaults to `./`.
+
+### Drone configuration example
+
+```yaml
+pipeline:
+  npm_auth:
+    image: robertstettner/drone-npm-auth
+    username: joebloggs
+    password: mypass
+    email: jb@me.com
+
+  build:
+    image: node:6
+    commands:
+      - npm install
+      - npm test
+    when:
+      event: [push, pull_request]
+```
+
+
+## License
+
+MIT

bin/expect-npm-auth

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+#!/usr/bin/expect
+
+set timeout 20
+
+set cmd [lindex $argv 0]
+set username [lindex $argv 1]
+set password [lindex $argv 2]
+set email [lindex $argv 3]
+
+eval spawn $cmd
+
+expect "Username: "
+send "$username\r";
+
+expect "Password: "
+send "$password\r";
+
+expect "Email: (this IS public) "
+send "$email\r";
+
+expect eof
+
+puts $expect_out(buffer)

bin/npm-auth

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+#!/usr/bin/env bash
+
+starttime=$(date +%s.%N)
+username="${NPM_USERNAME:-$PLUGIN_USERNAME}"
+password="${NPM_PASSWORD:-$PLUGIN_PASSWORD}"
+email="${NPM_EMAIL:-$PLUGIN_EMAIL}"
+registry="${NPM_REGISTRY:-$PLUGIN_REGISTRY}"
+scope="${NPM_SCOPE:-$PLUGIN_SCOPE}"
+path="${PLUGIN_PATH:-./}"
+
+echo "-- Generating authentication from NPM..."
+
+set -e
+
+if [ -z "$username" ]; then
+    echo "-- Username is not set!"
+    exit 1
+fi
+if [ -z "$password" ]; then
+    echo "-- Password is not set!"
+    exit 1
+fi
+if [ -z "$email" ]; then
+    echo "-- Email is not set!"
+    exit 1
+fi
+if [ -z "$registry" ]; then
+    registry="registry.npmjs.org"
+fi
+if [ -z "$scope" ]; then
+    scope_option=""
+else
+    scope_option="--scope=$scope"
+fi
+
+expect-npm-auth "npm login --registry $registry $scope_option" $username $password $email >/dev/null 2>&1
+
+endtime=$(date +%s.%N)
+echo "duration: $(echo "$endtime $starttime" | awk '{printf "%f", $1 - $2}')s"
+
+if [ ! -e ~/.npmrc ]; then
+    echo "-- Error logging into NPM"
+    exit 1
+else
+    echo $(cat ~/.npmrc) | sed 's/[[:blank:]]\+/\n/g' > $path.npmrc
+    echo "-- NPM authentication generation done!"
+fi