support for password protection

index.js

@@ -3,7 +3,11 @@
 const log = require("./log.js").log;
 const Queue = require("./queue").Queue;
 
-function initConnection(request) {
+function escape(str) {
+	return str.replace(/(['"\\])/g, "\\$1");
+}
+
+function initConnection(request, passwords = {}) {
 	let ws = request.accept();
 	log("ws connection accepted from origin", request.origin);
 
@@ -23,6 +27,9 @@ function initConnection(request) {
 		ws.send(JSON.stringify(data));
 	});
 
+	let password = passwords[`${host}:${port}`];
+	password && queue.add(`password "${escape(password)}"`);
+
 	// data going into the response parser
 	ws.on("message", message => {
 		log("ws -->", message.utf8Data);
@@ -52,7 +59,7 @@ exports.logging = function(enabled) {
 	log.enabled = enabled;
 }
 
-exports.ws2mpd = function(httpServer, requestValidator) {
+exports.ws2mpd = function(httpServer, requestValidator, passwords) {
 	function ready() { log("ws2mpd attached to a http server", httpServer.address()); }
 	(httpServer.listening ? ready() : httpServer.on("listening", ready));
 
@@ -66,6 +73,6 @@ exports.ws2mpd = function(httpServer, requestValidator) {
 			log("rejecting connection from origin", request.origin);
 			return request.reject();
 		}
-		initConnection(request);
+		initConnection(request, passwords);
 	});
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ws2mpd",
-  "version": "2.2.1",
+  "version": "2.3.0",
   "description": "",
   "main": "index.js",
   "scripts": {

queue.js

@@ -49,6 +49,7 @@ class Normal extends Response {
 	}
 }
 
+class Password extends Normal {}
 class Idle extends Normal {}
 
 class Welcome extends Response {
@@ -144,7 +145,7 @@ exports.Queue = class extends EventEmitter {
 		this._current = cmd;
 
 		cmd.on("done", data => {
-			this.emit("response", data);
+			if (ctor != Password) { this.emit("response", data); } // do not pass password check result back
 			this._current = null;
 			this._process();
 		});
@@ -153,6 +154,7 @@ exports.Queue = class extends EventEmitter {
 
 function getCtor(command) {
 	switch (true) {
+		case command.startsWith("password"): return Password;
 		case command.startsWith("idle"): return Idle;
 		case command.startsWith("albumart") || command.startsWith("readpicture"): return Binary;
 		default: return Normal;