diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..7772a53 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +aws-profile-parser +dist/* \ No newline at end of file diff --git a/.goreleaser.yml b/.goreleaser.yml new file mode 100644 index 0000000..c2c5b38 --- /dev/null +++ b/.goreleaser.yml @@ -0,0 +1,24 @@ +before: + hooks: + - go mod download + - go generate ./... +builds: +- env: + - CGO_ENABLED=0 +archives: +- replacements: + darwin: Darwin + linux: Linux + windows: Windows + 386: i386 + amd64: x86_64 +checksum: + name_template: 'checksums.txt' +snapshot: + name_template: "{{ .Tag }}-next" +changelog: + sort: asc + filters: + exclude: + - '^docs:' + - '^test:' diff --git a/README.md b/README.md index 1bac0ba..b722fde 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,52 @@ -# aws-profile-parser -AWS profile parser +# AWS Profile Parser + +AWS profile parser reads an [AWS Credentials File](https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/guide_credentials_profiles.html) and echos it in JSON format. + +### Usage + +**Good**: + +```json +./aws-profile-parser -c ../test/.aws/credentials -p test +{ + "AWS_ACCESS_KEY_ID": "ASIA2974r973492", + "AWS_SECRET_ACCESS_KEY": "FVHxnIS/Y24308oufofuf0", + "AWS_SESSION_TOKEN": "AOUEdlsjfewur0wrujo/Hv1Q==", + "AWS_REGION": "us-east-1" +} +``` + +```json +./aws-profile-parser -c ../test/.aws/credentials -p test2 +{ + "AWS_ROLE_ARN": "arn:aws:iam::00000000000:role/ReadOnly", + "AWS_SOURCE_PROFILE": "test" +} +``` + +**Bad**: + +```bash + ./aws-profile-parser -c ../endgame-sre-infrastructure/tools/okta-login/.aws/credentials -p test-bad +Error: invalid AWS profile [test-bad]: no `source_profile` found in profile +Usage: + aw-profile-parser [flags] + +Flags: + -c, --credentials string AWS credentials file + -h, --help help for aw-profile-parser + -p, --profile string AWS profile name (default "default") + -v, --version version for aw-profile-parser + +FATA[0000] Error executing command: invalid AWS profile [test-bad]: no `source_profile` found in profile +``` + +## Build & Release + +To build this project simply run: + +```bash +go build . +``` + +This project uses [GoReleaser](https://goreleaser.com) to publish releases. This is currently not integrated into CI and done manually. \ No newline at end of file diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..5c226af --- /dev/null +++ b/go.mod @@ -0,0 +1,12 @@ +module github.com/nayyara-samuel/aws-profile-parser + +go 1.12 + +require ( + github.com/mitchellh/mapstructure v1.2.2 + github.com/onsi/ginkgo v1.12.0 + github.com/onsi/gomega v1.9.0 + github.com/sirupsen/logrus v1.5.0 + github.com/spf13/cobra v0.0.7 + github.com/xgfone/gconf/v4 v4.2.0 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..5c477a7 --- /dev/null +++ b/go.sum @@ -0,0 +1,174 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/alecthomas/template 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"github.com/mitchellh/mapstructure" + log "github.com/sirupsen/logrus" + "github.com/spf13/cobra" + "github.com/xgfone/gconf/v4" + "io/ioutil" + "strings" +) + +var ( + credentialsFile string + profile string +) + +type AWSProfile struct { + AccessKeyID string `mapstructure:"aws_access_key_id" json:"AWS_ACCESS_KEY_ID,omitempty"` + SecretAccessKey string `mapstructure:"aws_secret_access_key" json:"AWS_SECRET_ACCESS_KEY,omitempty"` + SessionToken string `mapstructure:"aws_session_token" json:"AWS_SESSION_TOKEN,omitempty"` + Region string `mapstructure:"region" json:"AWS_REGION,omitempty"` + + RoleArn string `mapstructure:"role_arn" json:"AWS_ROLE_ARN,omitempty"` + RoleSessionName string `mapstructure:"role_session_name" json:"AWS_ROLE_SESSION_NAME,omitempty"` + SourceProfile string `mapstructure:"source_profile" json:"AWS_SOURCE_PROFILE,omitempty"` +} + +func (p AWSProfile) Validate() error { + noAccessKeyID := p.AccessKeyID == "" + noSecretAccessKey := p.SecretAccessKey == "" + noSourceProfile := p.SourceProfile == "" + noRoleArn := p.RoleArn == "" + + if noSourceProfile && noRoleArn { + // expect an access key ID and secret access key + if noAccessKeyID { + return errors.New("no `aws_access_key_id` found in profile") + } + if noSecretAccessKey { + return errors.New("no `aws_secret_access_key` found in profile") + } + } + + if noAccessKeyID && noSecretAccessKey { + // expect a source profile and role arn + if noSourceProfile { + return errors.New("no `source_profile` found in profile") + } + if noRoleArn { + return errors.New("no `role_arn` found in profile") + } + } + + return nil +} + +func ParseAWSProfile(credentialsData []byte, profile string) (AWSProfile, error) { + awsProfile := AWSProfile{} + + // check profile exists + if !strings.Contains(string(credentialsData), fmt.Sprintf("[%s]", profile)) { + return awsProfile, fmt.Errorf("no profile found with name: `%s`", profile) + } + + // INI -> generic map + rawData := make(map[string]interface{}) + err := gconf.NewIniDecoder(profile).Decode(credentialsData, rawData) + if err != nil { + return awsProfile, fmt.Errorf("failed to parse AWS profile from source: %s", err) + } + + // generic map -> awsProfile + err = mapstructure.Decode(rawData, &awsProfile) + if err != nil { + return awsProfile, fmt.Errorf("failed to parse AWS profile from loaded source: %s", err) + } + if err := awsProfile.Validate(); err != nil { + return awsProfile, fmt.Errorf("invalid AWS profile [%s]: %s", profile, err) + } + + return awsProfile, nil +} + +var awsProfileCmd = &cobra.Command{ + Use: "aw-profile-parser", + Short: "AWS profile parser", + Long: `AWS profile parser reads and validates a profile.`, + RunE: func(cmd *cobra.Command, args []string) error { + // read credentials file + data, err := ioutil.ReadFile(credentialsFile) + if err != nil { + return fmt.Errorf("error reading file: %s", err) + } + + awsProfile, err := ParseAWSProfile(data, profile) + if err != nil { + return err + } + + result, err := json.MarshalIndent(awsProfile, "", " ") + if err != nil { + return err + } + + fmt.Println(string(result)) + return nil + }, +} + +func main() { + err := awsProfileCmd.Execute() + if err != nil { + log.Fatalf("Error executing command: %s", err) + } +} + +func init() { + awsProfileCmd.PersistentFlags().StringVarP(&credentialsFile, "credentials", "c", "", "AWS credentials file") + awsProfileCmd.PersistentFlags().StringVarP(&profile, "profile", "p", "default", "AWS profile name") +} diff --git a/main_test.go b/main_test.go new file mode 100644 index 0000000..1daea16 --- /dev/null +++ b/main_test.go @@ -0,0 +1,112 @@ +package main + +import ( + . "github.com/onsi/ginkgo" + . "github.com/onsi/gomega" + "testing" +) + +var ( + credentials = []byte(` +[sts-session] +aws_access_key_id = testAccessKeyID +aws_secret_access_key = testSecretKey +region = us-east-1 +aws_session_token = testSessionToken + +[iam-user] +aws_access_key_id = testAccessKeyID +aws_secret_access_key = testSecretKey +region = us-east-1 + +[derived] +role_arn = testRoleArn +source_profile = iam-user +role_session_name = derived + +[bad-derived] +source_profile = iam-user + +[bad-no-key] +aws_secret_access_key = testSecretKey + +[bad-no-secret] +aws_access_key_id = testSecretKey +`) +) + +func TestOktaSetup(t *testing.T) { + RegisterFailHandler(Fail) + RunSpecs(t, "AWS Profile Parser") +} + +var _ = Describe("AWS Profile Parser", func() { + Context("Happy Path", func() { + It("should parser valid STS profile correctly", func() { + awsProfile, err := ParseAWSProfile(credentials, "sts-session") + Expect(err).To(Not(HaveOccurred())) + + Expect(awsProfile.AccessKeyID).To(Equal("testAccessKeyID")) + Expect(awsProfile.SecretAccessKey).To(Equal("testSecretKey")) + Expect(awsProfile.SessionToken).To(Equal("testSessionToken")) + Expect(awsProfile.Region).To(Equal("us-east-1")) + + Expect(awsProfile.RoleArn).To(BeEmpty()) + Expect(awsProfile.RoleSessionName).To(BeEmpty()) + Expect(awsProfile.SourceProfile).To(BeEmpty()) + }) + + It("should parser valid IAM user profile correctly", func() { + awsProfile, err := ParseAWSProfile(credentials, "iam-user") + Expect(err).To(Not(HaveOccurred())) + Expect(awsProfile.AccessKeyID).To(Equal("testAccessKeyID")) + Expect(awsProfile.SecretAccessKey).To(Equal("testSecretKey")) + Expect(awsProfile.SessionToken).To(BeEmpty()) + Expect(awsProfile.Region).To(Equal("us-east-1")) + + Expect(awsProfile.RoleArn).To(BeEmpty()) + Expect(awsProfile.RoleSessionName).To(BeEmpty()) + Expect(awsProfile.SourceProfile).To(BeEmpty()) + }) + + It("should parser valid derived profile correctly", func() { + awsProfile, err := ParseAWSProfile(credentials, "derived") + Expect(err).To(Not(HaveOccurred())) + + Expect(awsProfile.RoleSessionName).To(Equal("derived")) + Expect(awsProfile.RoleArn).To(Equal("testRoleArn")) + Expect(awsProfile.SourceProfile).To(Equal("iam-user")) + + Expect(awsProfile.AccessKeyID).To(BeEmpty()) + Expect(awsProfile.SecretAccessKey).To(BeEmpty()) + Expect(awsProfile.SessionToken).To(BeEmpty()) + Expect(awsProfile.Region).To(BeEmpty()) + }) + }) + + Context("Error Path", func() { + It("should return error for invalid profile name", func() { + _, err := ParseAWSProfile(credentials, "non-existent") + Expect(err).To(HaveOccurred()) + Expect(err.Error()).To(ContainSubstring("no profile found with name: `non-existent`")) + }) + + It("should return error for invalid derived profile", func() { + _, err := ParseAWSProfile(credentials, "bad-derived") + Expect(err).To(HaveOccurred()) + Expect(err.Error()).To(ContainSubstring("no `role_arn` found in profile")) + }) + + It("should return error for invalid profile with no access key", func() { + _, err := ParseAWSProfile(credentials, "bad-no-key") + Expect(err).To(HaveOccurred()) + Expect(err.Error()).To(ContainSubstring("no `aws_access_key_id` found in profile")) + }) + + It("should return error for invalid profile with no secret key", func() { + _, err := ParseAWSProfile(credentials, "bad-no-secret") + Expect(err).To(HaveOccurred()) + Expect(err.Error()).To(ContainSubstring("no `aws_secret_access_key` found in profile")) + }) + }) +})