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secrets.go
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secrets.go
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package secrets
import (
"errors"
"fmt"
"io/ioutil"
"log"
"os"
"os/user"
"path/filepath"
"regexp"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/commitdev/commit0/internal/config"
"github.com/manifoldco/promptui"
"gopkg.in/yaml.v2"
)
// Secrets - AWS prompted credentials
type Secrets struct {
AWS AWS
CircleCIKey string
GithubToken string
}
type AWS struct {
AccessKeyID string
SecretAccessKey string
}
func MakeAwsEnvars(cfg *config.Commit0Config, awsSecrets Secrets) []string {
env := os.Environ()
env = append(env, fmt.Sprintf("AWS_ACCESS_KEY_ID=%s", awsSecrets.AWS.AccessKeyID))
env = append(env, fmt.Sprintf("AWS_SECRET_ACCESS_KEY=%s", awsSecrets.AWS.SecretAccessKey))
env = append(env, fmt.Sprintf("AWS_DEFAULT_REGION=%s", cfg.Infrastructure.AWS.Region))
return env
}
func GetSecrets(baseDir string) Secrets {
secretsFile := filepath.Join(baseDir, "secrets.yaml")
if fileExists(secretsFile) {
log.Println("secrets.yaml exists ...")
return readSecrets(secretsFile)
} else {
// Get the user's home dir
usr, err := user.Current()
if err != nil {
log.Fatal(err)
}
credsFile := filepath.Join(usr.HomeDir, ".aws/credentials")
var secrets Secrets
// Load the credentials file to look for profiles
profiles, err := GetAWSProfiles()
if err == nil {
profilePrompt := promptui.Select{
Label: "Select AWS Profile",
Items: profiles,
}
_, profileResult, _ := profilePrompt.Run()
creds, err := credentials.NewSharedCredentials(credsFile, profileResult).Get()
if err == nil {
secrets = Secrets{
AWS: AWS{
AccessKeyID: creds.AccessKeyID,
SecretAccessKey: creds.SecretAccessKey,
},
}
}
}
// We couldn't load the credentials file, get the user to just paste them
if secrets.AWS == (AWS{}) {
promptAWSCredentials(&secrets)
}
if secrets.CircleCIKey == "" || secrets.GithubToken == "" {
ciPrompt := promptui.Select{
Label: "Which Continuous integration provider do you want to use?",
Items: []string{"CircleCI", "GitHub Actions"},
}
_, ciResult, _ := ciPrompt.Run()
if ciResult == "CircleCI" {
promptCircleCICredentials(&secrets)
} else if ciResult == "GitHub Actions" {
promptGitHubCredentials(&secrets)
}
}
writeSecrets(secretsFile, secrets)
return secrets
}
}
// GetAWSProfiles returns a list of AWS forprofiles set up on the user's sytem
func GetAWSProfiles() ([]string, error) {
usr, err := user.Current()
if err != nil {
return nil, err
}
// Load the credentials file to look for profiles
credsFile := filepath.Join(usr.HomeDir, ".aws/credentials")
creds, err := ioutil.ReadFile(credsFile)
if err != nil {
return nil, err
}
// Get all profiles
re := regexp.MustCompile(`\[(.*)\]`)
profileMatches := re.FindAllStringSubmatch(string(creds), -1)
profiles := make([]string, len(profileMatches))
for i, p := range profileMatches {
profiles[i] = p[1]
}
return profiles, nil
}
func readSecrets(secretsFile string) Secrets {
data, err := ioutil.ReadFile(secretsFile)
if err != nil {
log.Fatalln(err)
}
awsSecrets := Secrets{}
err = yaml.Unmarshal(data, &awsSecrets)
if err != nil {
log.Fatalln(err)
}
return awsSecrets
}
func writeSecrets(secretsFile string, s Secrets) {
secretsYaml, err := yaml.Marshal(&s)
if err != nil {
log.Fatalf("error: %v", err)
panic(err)
}
err = ioutil.WriteFile(secretsFile, []byte(secretsYaml), 0644)
if err != nil {
log.Fatalf("error: %v", err)
panic(err)
}
}
func promptAWSCredentials(secrets *Secrets) {
validateAKID := func(input string) error {
// 20 uppercase alphanumeric characters
var awsAccessKeyIDPat = regexp.MustCompile(`^[A-Z0-9]{20}$`)
if !awsAccessKeyIDPat.MatchString(input) {
return errors.New("Invalid aws_access_key_id")
}
return nil
}
validateSAK := func(input string) error {
// 40 base64 characters
var awsSecretAccessKeyPat = regexp.MustCompile(`^[A-Za-z0-9/+=]{40}$`)
if !awsSecretAccessKeyPat.MatchString(input) {
return errors.New("Invalid aws_secret_access_key")
}
return nil
}
accessKeyIDPrompt := promptui.Prompt{
Label: "Aws Access Key ID ",
Validate: validateAKID,
}
accessKeyIDResult, err := accessKeyIDPrompt.Run()
if err != nil {
log.Fatalf("Prompt failed %v\n", err)
panic(err)
}
secretAccessKeyPrompt := promptui.Prompt{
Label: "Aws Secret Access Key ",
Validate: validateSAK,
Mask: '*',
}
secretAccessKeyResult, err := secretAccessKeyPrompt.Run()
if err != nil {
log.Fatalf("Prompt failed %v\n", err)
panic(err)
}
secrets.AWS.AccessKeyID = accessKeyIDResult
secrets.AWS.SecretAccessKey = secretAccessKeyResult
}
func promptGitHubCredentials(secrets *Secrets) {
}
func promptCircleCICredentials(secrets *Secrets) {
validateKey := func(input string) error {
// 40 base64 characters
var awsSecretAccessKeyPat = regexp.MustCompile(`^[A-Za-z0-9]{40}$`)
if !awsSecretAccessKeyPat.MatchString(input) {
return errors.New("Invalid CircleCI API Key")
}
return nil
}
prompt := promptui.Prompt{
Label: "Please enter your CircleCI API key (you can create one at https://circleci.com/account/api) ",
Validate: validateKey,
}
key, err := prompt.Run()
if err != nil {
log.Fatalf("Prompt failed %v\n", err)
panic(err)
}
secrets.CircleCIKey = key
}
func fileExists(filename string) bool {
info, err := os.Stat(filename)
if os.IsNotExist(err) {
return false
}
return !info.IsDir()
}