mod: add configuration for key.dir and key.name

internal/serve/serve.go

@@ -34,10 +34,10 @@ func setupLogging() {
 // all if no user is given) the application `name` with the provided arguments
 // `args` as the ssh session. The ssh session will always allocate an pty
 // (necessary for tui applications).
-func setupSshServer(host string, port string, users map[string]string, name string, args []string) (*ssh.Server, error) {
+func setupSshServer(host string, port string, host_key_path string, users map[string]string, name string, args []string) (*ssh.Server, error) {
 	return wish.NewServer(
 		wish.WithAddress(net.JoinHostPort(host, port)),
-		wish.WithHostKeyPath(".ssh/ssh_host_ed25519_key"),
+		wish.WithHostKeyPath(host_key_path),
 		wish.WithPublicKeyAuth(func(_ ssh.Context, key ssh.PublicKey) bool {
 			if len(users) == 0 {
 				// no users provided, meaning there is no user authentication, everyone is allowed to connect
@@ -69,9 +69,9 @@ func setupSshServer(host string, port string, users map[string]string, name stri
 }
 
 // Serve an ssh application using the provided arguments.
-func Serve(host string, port string, users map[string]string, name string, args []string) {
+func Serve(host string, port string, host_key_path string, users map[string]string, name string, args []string) {
 	setupLogging()
-	srv, err := setupSshServer(host, port, users, name, args)
+	srv, err := setupSshServer(host, port, host_key_path, users, name, args)
 	if err != nil {
 		log.Error("Could not start server", "error", err)
 	}

main.go

@@ -12,6 +12,8 @@ func createDefaultConfig() {
 	viper.SetDefault("host", "127.0.0.1")
 	viper.SetDefault("port", "8022")
 	viper.SetDefault("users", map[string]string{})
+	viper.SetDefault("key.dir", ".ssh")
+	viper.SetDefault("key.name", "ssh_ed25519_key")
 	viper.SetDefault("app.name", "echo")
 	viper.SetDefault("app.args", []string{"Hello World"})
 }
@@ -58,6 +60,7 @@ func main() {
 	serve.Serve(
 		viper.GetString("host"),
 		viper.GetString("port"),
+		fmt.Sprintf("%s/%s", viper.GetString("key.dir"), viper.GetString("key.name")),
 		viper.GetStringMapString("users"),
 		viper.GetString("app.name"),
 		viper.GetStringSlice("app.args"),