diff --git a/action.yml b/action.yml new file mode 100644 index 0000000..bdd5673 --- /dev/null +++ b/action.yml @@ -0,0 +1,28 @@ +name: 'Vault Credential Action' +description: 'A Gitea Action that allows you to consume HashiCorp Vault™ secrets as secure environment variables' +inputs: + url: + description: 'The Vault Server Prefix, e.g. https://vault.example.com:8200' + required: true + method: + description: 'Login Method' + default: 'approle' + required: false + roleId: + description: 'Role ID' + required: false + secretId: + description: 'Role Secret' + required: false + secrets: + description: 'A semicolon-separated list of secrets to retrieve. These will automatically be converted to environmental variable keys. See README for more details' + required: false + token: + description: 'The Vault Token to be used to authenticate with Vault' + required: false +outputs: + time: + description: 'The time when the action was called' +runs: + using: 'go' + main: 'main.go' diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..1f8c21e --- /dev/null +++ b/go.mod @@ -0,0 +1,31 @@ +module git.mthie.com/mthie/vault-action + +go 1.21.1 + +require ( + github.com/hashicorp/vault/api v1.10.0 + github.com/pkg/errors v0.9.1 + github.com/sirupsen/logrus v1.9.3 +) + +require ( + github.com/cenkalti/backoff/v3 v3.0.0 // indirect + github.com/go-jose/go-jose/v3 v3.0.0 // indirect + github.com/hashicorp/errwrap v1.1.0 // indirect + github.com/hashicorp/go-cleanhttp v0.5.2 // indirect + github.com/hashicorp/go-multierror v1.1.1 // indirect + github.com/hashicorp/go-retryablehttp v0.6.6 // indirect + github.com/hashicorp/go-rootcerts v1.0.2 // indirect + github.com/hashicorp/go-secure-stdlib/parseutil v0.1.6 // indirect + github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 // indirect + github.com/hashicorp/go-sockaddr v1.0.2 // indirect + github.com/hashicorp/hcl v1.0.0 // indirect + github.com/mitchellh/go-homedir v1.1.0 // indirect + github.com/mitchellh/mapstructure v1.5.0 // indirect + github.com/ryanuber/go-glob v1.0.0 // indirect + golang.org/x/crypto v0.6.0 // indirect + golang.org/x/net v0.7.0 // indirect + golang.org/x/sys v0.5.0 // indirect + golang.org/x/text v0.7.0 // indirect + golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..32fec7a --- /dev/null +++ b/go.sum @@ -0,0 +1,93 @@ +github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8= +github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= +github.com/cenkalti/backoff/v3 v3.0.0 h1:ske+9nBpD9qZsTBoF41nW5L+AIuFBKMeze18XQ3eG1c= 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h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o= +github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE= +github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= +github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I= +github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= +github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80= +github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9neXJWAZQ= +github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48= +github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ= +github.com/hashicorp/go-hclog v0.16.2 h1:K4ev2ib4LdQETX5cSZBG0DVLk1jwGqSPXBjdah3veNs= +github.com/hashicorp/go-hclog v0.16.2/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ= +github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk= +github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo= +github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM= +github.com/hashicorp/go-retryablehttp v0.6.6 h1:HJunrbHTDDbBb/ay4kxa1n+dLmttUlnP3V9oNE4hmsM= +github.com/hashicorp/go-retryablehttp v0.6.6/go.mod h1:vAew36LZh98gCBJNLH42IQ1ER/9wtLZZ8meHqQvEYWY= +github.com/hashicorp/go-rootcerts v1.0.2 h1:jzhAVGtqPKbwpyCPELlgNWhE1znq+qwJtW5Oi2viEzc= +github.com/hashicorp/go-rootcerts v1.0.2/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8= +github.com/hashicorp/go-secure-stdlib/parseutil v0.1.6 h1:om4Al8Oy7kCm/B86rLCLah4Dt5Aa0Fr5rYBG60OzwHQ= +github.com/hashicorp/go-secure-stdlib/parseutil v0.1.6/go.mod h1:QmrqtbKuxxSWTN3ETMPuB+VtEiBJ/A9XhoYGv8E1uD8= +github.com/hashicorp/go-secure-stdlib/strutil v0.1.1/go.mod h1:gKOamz3EwoIoJq7mlMIRBpVTAUn8qPCrEclOKKWhD3U= 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h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= +golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +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= diff --git a/main.go b/main.go new file mode 100644 index 0000000..1ed00f3 --- /dev/null +++ b/main.go @@ -0,0 +1,157 @@ +package main + +import ( + "fmt" + "os" + "strings" + + vault "github.com/hashicorp/vault/api" + "github.com/pkg/errors" + "github.com/sirupsen/logrus" +) + +const ( + eol = "\n" + multiLineFileDelim = "_GitHubActionsFileCommandDelimeter_" + multilineFileCmd = "%s<<" + multiLineFileDelim + eol + "%s" + eol + multiLineFileDelim // ${name}<<${delimiter}${os.EOL}${convertedVal}${os.EOL}${delimiter} +) + +var vaultClient *vault.Client + +func main() { + var err error + + vaultClient, err = vault.NewClient(&vault.Config{ + Address: getInput("url"), + }) + + if err != nil { + logrus.WithError(err).Fatal("error creating vault client") + } + + switch getInput("method") { + case "approle": + if err := setVaultTokenFromRoleID(); err != nil { + logrus.WithError(err).Fatal("error setting vault token from role id") + } + case "token": + vaultClient.SetToken(getInput("token")) + default: + logrus.Fatal("no credentials found") + } + + exprs := strings.Split(getInput("secrets"), ";") + for _, expr := range exprs { + p, k, o := parseExpression(strings.TrimSpace(expr)) + logrus.Infof("%q => %q => %q", p, k, o) + + s, err := getVaultSecretKey(p, k) + if err != nil { + logrus.WithError(err).Fatal("error reading credential") + } + + setOutput(o, s) + } +} + +func parseExpression(i string) (path, key, outputName string) { + input := strings.TrimSpace(strings.Trim(i, "\"")) + + if strings.Contains(input, "|") { + oSplit := strings.Split(strings.TrimSpace(input), "|") + if len(oSplit) > 1 { + outputName = strings.TrimSpace(oSplit[1]) + input = strings.TrimSpace(oSplit[0]) + } + } + + if strings.Contains(input, " ") { + iSplit := strings.Split(strings.TrimSpace(input), " ") + if len(iSplit) > 1 { + path = strings.TrimSpace(iSplit[0]) + key = strings.TrimSpace(iSplit[1]) + + if outputName == "" { + outputName = strings.TrimSpace(iSplit[1]) + } + } + } + + outputName = strings.TrimSpace(outputName) + outputName = strings.ReplaceAll(outputName, " ", "_") + outputName = strings.ToUpper(outputName) + + return path, key, outputName +} + +func getVaultSecretKey(p, k string) (string, error) { + s, err := getVaultSecret(p) + if err != nil { + return "", errors.Wrap(err, "error getting path") + } + + if s == nil || s.Data == nil || s.Data["data"] == nil { + return "", errors.New("nil secret or secret data") + } + + v, ok := s.Data["data"].(map[string]any)[k].(string) + if !ok { + logrus.Infof("Data: %#v", s.Data["data"]) + return "", errors.New("key in secret not found") + } + + return v, nil +} + +func getVaultSecret(p string) (*vault.Secret, error) { + return vaultClient.Logical().Read(p) +} + +func setVaultTokenFromRoleID() error { + data := map[string]any{ + "role_id": getInput("role-id"), + } + + if getInput("secret-id") != "" { + data["secret_id"] = getInput("secret-id") + } + + loginSecret, err := vaultClient.Logical().Write("auth/approle/login", data) + if err != nil || loginSecret.Auth == nil { + return errors.Wrap(err, "fetching authentication token") + } + + vaultClient.SetToken(loginSecret.Auth.ClientToken) + + return nil +} + +func getInput(i string) string { + e := strings.ReplaceAll(i, " ", "_") + e = strings.ToUpper(e) + e = "INPUT_" + e + + return strings.ReplaceAll(strings.TrimSpace(os.Getenv(e)), "\\n", "\n") +} + +func setOutput(k, v string) (err error) { + msg := fmt.Sprintf(multilineFileCmd, k, v) + outputFilepath := os.Getenv("GITHUB_OUTPUT") + + f, err := os.OpenFile(outputFilepath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644) + if err != nil { + return errors.Wrap(err, "open output file") + } + + defer func() { + if cErr := f.Close(); cErr != nil && err == nil { + err = cErr + } + }() + + if _, err := f.Write([]byte(msg)); err != nil { + return errors.Wrap(err, "write to output") + } + + return nil +}