package client import ( "bytes" "encoding/json" "fmt" "strings" "github.com/docker/docker-credential-helpers/credentials" ) // isValidCredsMessage checks if 'msg' contains invalid credentials error message. // It returns whether the logs are free of invalid credentials errors and the error if it isn't. // error values can be errCredentialsMissingServerURL or errCredentialsMissingUsername. func isValidCredsMessage(msg string) error { if credentials.IsCredentialsMissingServerURLMessage(msg) { return credentials.NewErrCredentialsMissingServerURL() } if credentials.IsCredentialsMissingUsernameMessage(msg) { return credentials.NewErrCredentialsMissingUsername() } return nil } // Store uses an external program to save credentials. func Store(program ProgramFunc, creds *credentials.Credentials) error { cmd := program(credentials.ActionStore) buffer := new(bytes.Buffer) if err := json.NewEncoder(buffer).Encode(creds); err != nil { return err } cmd.Input(buffer) out, err := cmd.Output() if err != nil { if isValidErr := isValidCredsMessage(string(out)); isValidErr != nil { err = isValidErr } return fmt.Errorf("error storing credentials - err: %v, out: `%s`", err, strings.TrimSpace(string(out))) } return nil } // Get executes an external program to get the credentials from a native store. func Get(program ProgramFunc, serverURL string) (*credentials.Credentials, error) { cmd := program(credentials.ActionGet) cmd.Input(strings.NewReader(serverURL)) out, err := cmd.Output() if err != nil { if credentials.IsErrCredentialsNotFoundMessage(string(out)) { return nil, credentials.NewErrCredentialsNotFound() } if isValidErr := isValidCredsMessage(string(out)); isValidErr != nil { err = isValidErr } return nil, fmt.Errorf("error getting credentials - err: %v, out: `%s`", err, strings.TrimSpace(string(out))) } resp := &credentials.Credentials{ ServerURL: serverURL, } if err := json.NewDecoder(bytes.NewReader(out)).Decode(resp); err != nil { return nil, err } return resp, nil } // Erase executes a program to remove the server credentials from the native store. func Erase(program ProgramFunc, serverURL string) error { cmd := program(credentials.ActionErase) cmd.Input(strings.NewReader(serverURL)) out, err := cmd.Output() if err != nil { t := strings.TrimSpace(string(out)) if isValidErr := isValidCredsMessage(t); isValidErr != nil { err = isValidErr } return fmt.Errorf("error erasing credentials - err: %v, out: `%s`", err, t) } return nil } // List executes a program to list server credentials in the native store. func List(program ProgramFunc) (map[string]string, error) { cmd := program(credentials.ActionList) cmd.Input(strings.NewReader("unused")) out, err := cmd.Output() if err != nil { t := strings.TrimSpace(string(out)) if isValidErr := isValidCredsMessage(t); isValidErr != nil { err = isValidErr } return nil, fmt.Errorf("error listing credentials - err: %v, out: `%s`", err, t) } var resp map[string]string if err = json.NewDecoder(bytes.NewReader(out)).Decode(&resp); err != nil { return nil, err } return resp, nil }