MeshCentral/public/scripts/agent-redir-ws-0.1.0.js

121 lines
4.7 KiB
JavaScript

/**
* @description Mesh Agent Transport Module - using websocket relay
* @author Ylian Saint-Hilaire
* @version v0.0.1f
*/
// Construct a MeshServer agent direction object
var CreateAgentRedirect = function (meshserver, module, serverPublicNamePort) {
var obj = {};
obj.m = module; // This is the inner module (Terminal or Desktop)
module.parent = obj;
obj.meshserver = meshserver;
obj.nodeid = null;
obj.State = 0;
obj.socket = null;
obj.connectstate = -1;
obj.tunnelid = Math.random().toString(36).substring(2); // Generate a random client tunnel id
obj.protocol = module.protocol; // 1 = SOL, 2 = KVM, 3 = IDER, 4 = Files, 5 = FileTransfer
obj.onStateChanged = null;
// Private method
//obj.debug = function (msg) { console.log(msg); }
obj.Start = function (nodeid) {
var url2, url = window.location.protocol.replace("http", "ws") + "//" + window.location.host + window.location.pathname.substring(0, window.location.pathname.lastIndexOf('/')) + "/meshrelay.ashx?id=" + obj.tunnelid;
if (serverPublicNamePort) { url2 = window.location.protocol.replace("http", "ws") + "//" + serverPublicNamePort + "/meshrelay.ashx?id=" + obj.tunnelid; } else { url2 = url; }
obj.nodeid = nodeid;
obj.connectstate = 0;
obj.socket = new WebSocket(url);
obj.socket.onopen = obj.xxOnSocketConnected;
obj.socket.onmessage = obj.xxOnMessage;
obj.socket.onclose = obj.xxOnSocketClosed;
obj.xxStateChange(1);
obj.meshserver.Send({ action: 'msg', type: 'tunnel', nodeid: obj.nodeid, value: url2 });
//obj.debug("Agent Redir Start: " + url);
}
obj.xxOnSocketConnected = function () {
//obj.debug("Agent Redir Socket Connected");
obj.xxStateChange(2);
}
obj.xxOnMessage = function (e) {
if (obj.State < 3) { if (e.data == 'c') { obj.socket.send(obj.protocol); obj.xxStateChange(3); return; } }
if (typeof e.data == 'object') {
var f = new FileReader();
if (f.readAsBinaryString) {
// Chrome & Firefox (Draft)
f.onload = function (e) { obj.xxOnSocketData(e.target.result); }
f.readAsBinaryString(new Blob([e.data]));
} else if (f.readAsArrayBuffer) {
// Chrome & Firefox (Spec)
f.onloadend = function (e) { obj.xxOnSocketData(e.target.result); }
f.readAsArrayBuffer(e.data);
} else {
// IE10, readAsBinaryString does not exist, use an alternative.
var binary = "";
var bytes = new Uint8Array(e.data);
var length = bytes.byteLength;
for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); }
obj.xxOnSocketData(binary);
}
} else {
// If we get a string object, it maybe the WebRTC confirm. Ignore it.
//obj.debug("Agent Redir Relay - OnData - " + typeof e.data + " - " + e.data.length);
obj.xxOnSocketData(e.data);
}
};
obj.xxOnSocketData = function (data) {
if (!data || obj.connectstate == -1) return;
if (typeof data === 'object') {
// This is an ArrayBuffer, convert it to a string array (used in IE)
var binary = "", bytes = new Uint8Array(data), length = bytes.byteLength;
for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); }
data = binary;
}
else if (typeof data !== 'string') return;
//console.log("xxOnSocketData", rstr2hex(data));
return obj.m.ProcessData(data);
}
obj.Send = function (x) {
//obj.debug("Agent Redir Send(" + x.length + "): " + rstr2hex(x));
if (obj.socket != null && obj.socket.readyState == WebSocket.OPEN) {
if (typeof x == 'string') {
var b = new Uint8Array(x.length);
for (var i = 0; i < x.length; ++i) { b[i] = x.charCodeAt(i); }
obj.socket.send(b.buffer);
} else {
obj.socket.send(x);
}
}
}
obj.xxOnSocketClosed = function () {
//obj.debug("Agent Redir Socket Closed");
obj.Stop();
}
obj.xxStateChange = function(newstate) {
if (obj.State == newstate) return;
obj.State = newstate;
obj.m.xxStateChange(obj.State);
if (obj.onStateChanged != null) obj.onStateChanged(obj, obj.State);
}
obj.Stop = function () {
//obj.debug("Agent Redir Socket Stopped");
obj.xxStateChange(0);
obj.connectstate = -1;
if (obj.socket != null) { obj.socket.close(); obj.socket = null; }
}
return obj;
}