Function loginWithStoredCredentials

cli/command/registry/login.go:189–227

(ctx context.Context, dockerCLI command.Cli, authConfig registrytypes.AuthConfig)

}

func loginWithStoredCredentials(ctx context.Context, dockerCLI command.Cli, authConfig registrytypes.AuthConfig) (msg string, _ error) {
	_, _ = fmt.Fprintf(dockerCLI.Err(), "Authenticating with existing credentials...")
	if authConfig.Username != "" {
		_, _ = fmt.Fprintf(dockerCLI.Err(), " [Username: %s]", authConfig.Username)
	}
	_, _ = fmt.Fprint(dockerCLI.Err(), "\n")

	out := tui.NewOutput(dockerCLI.Err())
	out.PrintNote("To login with a different account, run 'docker logout' followed by 'docker login'")

	_, _ = fmt.Fprint(dockerCLI.Err(), "\n\n")

	resp, err := dockerCLI.Client().RegistryLogin(ctx, client.RegistryLoginOptions{
		Username:      authConfig.Username,
		Password:      authConfig.Password,
		ServerAddress: authConfig.ServerAddress,
		IdentityToken: authConfig.IdentityToken,
		RegistryToken: authConfig.RegistryToken,
	})
	if err != nil {
		if errdefs.IsUnauthorized(err) {
			_, _ = fmt.Fprintln(dockerCLI.Err(), "Stored credentials invalid or expired")
		} else {
			_, _ = fmt.Fprintln(dockerCLI.Err(), "Login did not succeed, error:", err)
		}
		// TODO(thaJeztah): should this return the error here, or is there a reason for continuing?
	}

	if resp.Auth.IdentityToken != "" {
		authConfig.Password = ""
		authConfig.IdentityToken = resp.Auth.IdentityToken
	}

	if err := storeCredentials(dockerCLI.ConfigFile(), authConfig); err != nil {
		return "", err
	}

	return resp.Auth.Status, err
}

func loginUser(ctx context.Context, dockerCLI command.Cli, opts loginOptions, defaultUsername, serverAddress string) (msg string, _ error) {
	// Some links documenting this: