package registry import ( "encoding/base64" "encoding/json" "fmt" "os" "strings" "github.com/docker/cli/cli/config/configfile" "github.com/docker/cli/cli/config/types" "github.com/woodpecker-ci/woodpecker/server/model" ) type filesystem struct { path string } func Filesystem(path string) model.ReadOnlyRegistryService { return &filesystem{path} } func parseDockerConfig(path string) ([]*model.Registry, error) { if path == "" { return nil, nil } f, err := os.Open(path) if err != nil { return nil, err } defer f.Close() configFile := configfile.ConfigFile{ AuthConfigs: make(map[string]types.AuthConfig), } if err := json.NewDecoder(f).Decode(&configFile); err != nil { return nil, err } for registryHostname := range configFile.CredentialHelpers { newAuth, err := configFile.GetAuthConfig(registryHostname) if err == nil { configFile.AuthConfigs[registryHostname] = newAuth } } for addr, ac := range configFile.AuthConfigs { if ac.Auth != "" { ac.Username, ac.Password, err = decodeAuth(ac.Auth) if err != nil { return nil, err } ac.Auth = "" ac.ServerAddress = addr configFile.AuthConfigs[addr] = ac } } var auths []*model.Registry for key, auth := range configFile.AuthConfigs { auths = append(auths, &model.Registry{ Address: key, Username: auth.Username, Password: auth.Password, }) } return auths, nil } func (b *filesystem) RegistryFind(*model.Repo, string) (*model.Registry, error) { return nil, nil } func (b *filesystem) RegistryList(*model.Repo) ([]*model.Registry, error) { return parseDockerConfig(b.path) } // decodeAuth decodes a base64 encoded string and returns username and password func decodeAuth(authStr string) (string, string, error) { if authStr == "" { return "", "", nil } decLen := base64.StdEncoding.DecodedLen(len(authStr)) decoded := make([]byte, decLen) authByte := []byte(authStr) n, err := base64.StdEncoding.Decode(decoded, authByte) if err != nil { return "", "", err } if n > decLen { return "", "", fmt.Errorf("Something went wrong decoding auth config") } arr := strings.SplitN(string(decoded), ":", 2) if len(arr) != 2 { return "", "", fmt.Errorf("Invalid auth configuration file") } password := strings.Trim(arr[1], "\x00") return arr[0], password, nil }