improve authentification

cmd/sendxmpp/cmd.go

@@ -13,6 +13,8 @@ import (
 	"gosrc.io/xmpp"
 )
 
+var configFile = ""
+
 var jid = ""
 var password = ""
 
@@ -20,8 +22,9 @@ var receiverMUC = false
 var stdIn = false
 
 var cmd = &cobra.Command{
-	Use:  "sendxmpp",
-	Args: cobra.MinimumNArgs(1),
+	Use:     "sendxmpp <recieve,> [message]",
+	Example: `sendxmpp to@chat.sum7.eu "Hello World!"`,
+	Args:    cobra.RangeArgs(1, 2),
 	Run: func(cmd *cobra.Command, args []string) {
 		receiver := strings.Split(args[0], ",")
 		msgText := ""
@@ -35,19 +38,23 @@ var cmd = &cobra.Command{
 
 		var err error
 		client, err := xmpp.NewClient(xmpp.Config{
-			Jid:      jid,
-			Password: password,
+			Jid:      viper.GetString("jid"),
+			Password: viper.GetString("password"),
 		}, xmpp.NewRouter())
 
 		if err != nil {
-			log.Panicf("error on startup xmpp client: %s", err)
+			log.Errorf("error on startup xmpp client: %s", err)
+			return
 		}
 
 		wg := sync.WaitGroup{}
 		wg.Add(1)
 
 		cm := xmpp.NewStreamManager(client, func(c xmpp.Sender) {
+			defer wg.Done()
+
 			log.Info("client connected")
+
 			if receiverMUC {
 				for _, muc := range receiver {
 					joinMUC(c, muc, "sendxmpp")
@@ -56,7 +63,6 @@ var cmd = &cobra.Command{
 
 			if !stdIn {
 				send(c, receiver, msgText)
-				wg.Done()
 				return
 			}
 
@@ -68,11 +74,11 @@ var cmd = &cobra.Command{
 			if err := scanner.Err(); err != nil {
 				log.Errorf("error on reading stdin: %s", err)
 			}
-			wg.Done()
 		})
 		go func() {
 			err := cm.Run()
 			log.Panic("closed connection:", err)
+			wg.Done()
 		}()
 
 		wg.Wait()
@@ -82,14 +88,35 @@ var cmd = &cobra.Command{
 }
 
 func init() {
-	cmd.Flags().StringVarP(&jid, "jid", "", "", "using jid (required)")
-	viper.BindPFlag("jid", cmd.Flags().Lookup("jid"))
-	// cmd.MarkFlagRequired("jid")
+	cobra.OnInitialize(initConfig)
+	cmd.PersistentFlags().StringVar(&configFile, "config", "", "config file (default is ~/.config/fluxxmpp.yml)")
 
-	cmd.Flags().StringVarP(&password, "password", "", "", "using password for your jid (required)")
+	cmd.Flags().StringP("jid", "", "", "using jid (required)")
+	viper.BindPFlag("jid", cmd.Flags().Lookup("jid"))
+
+	cmd.Flags().StringP("password", "", "", "using password for your jid (required)")
 	viper.BindPFlag("password", cmd.Flags().Lookup("password"))
-	// cmd.MarkFlagRequired("password")
 
 	cmd.Flags().BoolVarP(&stdIn, "stdin", "i", false, "read from stdin instatt of 2. argument")
 	cmd.Flags().BoolVarP(&receiverMUC, "muc", "m", false, "reciever is a muc (join it before sending messages)")
 }
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if configFile != "" {
+		viper.SetConfigFile(configFile)
+	}
+
+	viper.SetConfigName("fluxxmpp")
+	viper.AddConfigPath("/etc/")
+	viper.AddConfigPath("$HOME/.config")
+	viper.AddConfigPath(".")
+
+	viper.SetEnvPrefix("FLUXXMPP")
+	viper.AutomaticEnv()
+
+	// If a config file is found, read it in.
+	if err := viper.ReadInConfig(); err != nil {
+		log.Warnf("no configuration found (somebody could read your password from progress argument list): %s", err)
+	}
+}