From 1ec7bb3b740cfd0af96863ffda2849c9580031d5 Mon Sep 17 00:00:00 2001 From: David Pollack Date: Thu, 31 Aug 2023 15:42:06 +0200 Subject: [PATCH] Allow gcr authentication with workload identity (#383) * Allow gcr authentication with workload identity --- cmd/drone-ecr/main.go | 2 +- cmd/drone-gcr/main.go | 57 +++++++++++++++++++++++++++++++++++------- go.mod | 10 ++++++-- go.sum | 58 +++++++++++++++++++++++++++++++++++++++++-- 4 files changed, 113 insertions(+), 14 deletions(-) diff --git a/cmd/drone-ecr/main.go b/cmd/drone-ecr/main.go index ca08cfd..55aa95e 100644 --- a/cmd/drone-ecr/main.go +++ b/cmd/drone-ecr/main.go @@ -197,7 +197,7 @@ func parseBoolOrDefault(defaultValue bool, s string) (result bool) { var err error result, err = strconv.ParseBool(s) if err != nil { - result = false + result = defaultValue } return diff --git a/cmd/drone-gcr/main.go b/cmd/drone-gcr/main.go index 27e96c1..a77b0d7 100644 --- a/cmd/drone-gcr/main.go +++ b/cmd/drone-gcr/main.go @@ -1,20 +1,23 @@ package main import ( + "context" "encoding/base64" "os" "os/exec" "path" + "strconv" "strings" "github.com/joho/godotenv" "github.com/sirupsen/logrus" + "golang.org/x/oauth2/google" docker "github.com/drone-plugins/drone-docker" ) // gcr default username -const username = "_json_key" +var username = "_json_key" func main() { // Load env-file if it exists first @@ -31,14 +34,10 @@ func main() { "GOOGLE_CREDENTIALS", "TOKEN", ) + workloadIdentity = parseBoolOrDefault(false, getenv("PLUGIN_WORKLOAD_IDENTITY")) ) - - // decode the token if base64 encoded - decoded, err := base64.StdEncoding.DecodeString(password) - if err == nil { - password = string(decoded) - } - + // set username and password + username, password = setUsernameAndPassword(username, password, workloadIdentity) // default registry value if registry == "" { registry = "gcr.io" @@ -61,12 +60,52 @@ func main() { cmd := exec.Command(docker.GetDroneDockerExecCmd()) cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr - err = cmd.Run() + err := cmd.Run() if err != nil { logrus.Fatal(err) } } +func getOauthToken(data []byte) (s string) { + scopes := []string{ + "https://www.googleapis.com/auth/cloud-platform", + } + ctx := context.Background() + credentials, err := google.CredentialsFromJSON(ctx, data, scopes...) + if err == nil { + token, err := credentials.TokenSource.Token() + if err == nil { + return token.AccessToken + } + } + return +} + +func setUsernameAndPassword(user string, pass string, workloadIdentity bool) (u string, p string) { + // decode the token if base64 encoded + decoded, err := base64.StdEncoding.DecodeString(pass) + if err == nil { + pass = string(decoded) + } + // get oauth token and set username if using workload identity + if workloadIdentity { + data := []byte(pass) + pass = getOauthToken(data) + user = "oauth2accesstoken" + } + return user, pass +} + +func parseBoolOrDefault(defaultValue bool, s string) (result bool) { + var err error + result, err = strconv.ParseBool(s) + if err != nil { + result = defaultValue + } + + return +} + func getenv(key ...string) (s string) { for _, k := range key { s = os.Getenv(k) diff --git a/go.mod b/go.mod index 312568d..3a8ef58 100644 --- a/go.mod +++ b/go.mod @@ -3,20 +3,26 @@ module github.com/drone-plugins/drone-docker require ( github.com/aws/aws-sdk-go v1.26.7 github.com/coreos/go-semver v0.3.0 + github.com/dchest/uniuri v1.2.0 github.com/drone-plugins/drone-plugin-lib v0.4.1 github.com/drone/drone-go v1.7.1 github.com/inhies/go-bytesize v0.0.0-20210819104631-275770b98743 github.com/joho/godotenv v1.3.0 github.com/sirupsen/logrus v1.9.0 github.com/urfave/cli v1.22.2 + golang.org/x/oauth2 v0.8.0 ) require ( + cloud.google.com/go/compute/metadata v0.2.0 // indirect github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect - github.com/dchest/uniuri v1.2.0 // indirect + github.com/golang/protobuf v1.5.2 // indirect github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af // indirect github.com/russross/blackfriday/v2 v2.1.0 // indirect - golang.org/x/sys v0.0.0-20220731174439-a90be440212d // indirect + golang.org/x/net v0.10.0 // indirect + golang.org/x/sys v0.8.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/protobuf v1.28.0 // indirect gopkg.in/yaml.v2 v2.2.8 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect ) diff --git a/go.sum b/go.sum index fbd17b5..9940eaf 100644 --- a/go.sum +++ b/go.sum @@ -1,3 +1,5 @@ +cloud.google.com/go/compute/metadata v0.2.0 h1:nBbNSZyDpkNlo3DepaaLKVuO7ClyifSAmNloSCZrHnQ= +cloud.google.com/go/compute/metadata v0.2.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k= github.com/99designs/httpsignatures-go v0.0.0-20170731043157-88528bf4ca7e/go.mod h1:Xa6lInWHNQnuWoF0YPSsx+INFA9qk7/7pTjwb3PInkY= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= @@ -17,8 +19,14 @@ github.com/drone-plugins/drone-plugin-lib v0.4.1 h1:47rZlmcMpr1hSp+6Gl+1Z4t+efi/ github.com/drone-plugins/drone-plugin-lib v0.4.1/go.mod h1:KwCu92jFjHV3xv2hu5Qg/8zBNvGwbhoJDQw/EwnTvoM= github.com/drone/drone-go v1.7.1 h1:ZX+3Rs8YHUSUQ5mkuMLmm1zr1ttiiE2YGNxF3AnyDKw= github.com/drone/drone-go v1.7.1/go.mod h1:fxCf9jAnXDZV1yDr0ckTuWd1intvcQwfJmTRpTZ1mXg= -github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= +github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw= +github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg= +github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= github.com/inhies/go-bytesize v0.0.0-20210819104631-275770b98743 h1:X3Xxno5Ji8idrNiUoFc7QyXpqhSYlDRYQmc7mlpMBzU= github.com/inhies/go-bytesize v0.0.0-20210819104631-275770b98743/go.mod h1:KrtyD5PFj++GKkFS/7/RRrfnRhAMGQwy75GLCHWrCNs= github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af h1:pmfjZENx5imkbgOkpRUYLnmbU7UEFbjtDA2hxJ1ichM= @@ -40,9 +48,55 @@ github.com/urfave/cli v1.22.2 h1:gsqYFH8bb9ekPA12kRo0hfjngWQjkJPlN9R0N78BoUo= github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0= github.com/urfave/cli/v2 v2.23.6/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc= github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8= +github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= +golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= +golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs= +golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks= +golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= +golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= +golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs= +golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M= +golang.org/x/net 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