func runLogin(dockerCli *client.DockerCli, opts loginOptions) error {
ctx := context.Background()
clnt := dockerCli.Client()
var serverAddress string
var isDefaultRegistry bool
if opts.serverAddress != "" {
serverAddress = opts.serverAddress
} else {
serverAddress = dockerCli.ElectAuthServer(ctx)
isDefaultRegistry = true
}
authConfig, err := dockerCli.ConfigureAuth(opts.user, opts.password, serverAddress, isDefaultRegistry)
if err != nil {
return err
}
response, err := clnt.RegistryLogin(ctx, authConfig)
if err != nil {
return err
}
if response.IdentityToken != "" {
authConfig.Password = ""
authConfig.IdentityToken = response.IdentityToken
}
if err := client.StoreCredentials(dockerCli.ConfigFile(), authConfig); err != nil {
return fmt.Errorf("Error saving credentials: %v", err)
}
if response.Status != "" {
fmt.Fprintln(dockerCli.Out(), response.Status)
}
return nil
}