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112 lines
3.7 KiB
112 lines
3.7 KiB
var sys = require("sys"),
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net = require("net"),
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XMLNS = require("./xmlns.js"),
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xmpp = require("node-xmpp"),
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colors = require("colors"),
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events = require("events");
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var BytestreamServer = function(parent) {
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var self = this;
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this.bytestreams = parent;
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this.client = this.bytestreams.client;
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this.port = (this.client.params.s5bPort == null) ? 8010 : this.client.params.s5bPort;
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this.host = (this.client.params.s5bHost == null) ? "proxy." + this.client.params.host : this.client.params.s5bHost;
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this._clients = {};
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this._handlers = {};
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this.tcpSocket = net.createServer(function(stream) {self.handleConnection(stream);});
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this.tcpSocket.on("error", function(error) {
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console.log("Error with S5B server!");
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console.log(error);
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});
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this.tcpSocket.listen(this.port, "0.0.0.0");
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};
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exports.BytestreamServer = BytestreamServer;
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BytestreamServer.prototype.close = function() {
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for (ii in this._clients) {
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this._clients[ii].end();
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}
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this.tcpSocket.close();
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};
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BytestreamServer.prototype.addHandler = function(iqId, sidHash, data, cbSuccess, cbFailure) {
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this._handlers[sidHash] = {id: iqId, data: data, cbSuccess:cbSuccess, cbFailure:cbFailure};
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};
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BytestreamServer.prototype.handleConnection = function(stream) {
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var self = this;
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this._clients[stream.remoteAddress] = new BytestreamHandler(stream, self);
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this._clients[stream.remoteAddress].established = false;
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this._clients[stream.remoteAddress].transfered = false;
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stream.on("error", function(error) {
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console.log("S5B stream error from "+ stream.remoteAddress);
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console.log(error);
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stream.end();
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delete self._clients[stream.remoteAddress];
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});
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stream.on("connect", this._clients[stream.remoteAddress].onConnect);
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stream.on("data", this._clients[stream.remoteAddress].onData);
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stream.on("end", this._clients[stream.remoteAddress].onEnd);
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};
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var BytestreamHandler = function(self, parent) {
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self.parent = parent;
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self.iqId = null;
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this.onConnect = function(data) {};
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this.onData = function(data) {
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// TODO: Disconnect client when BS data is entered
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// just a start
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if (data[0] !== 0x05 && data[1] > 0x0F) {
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console.log("Received erroneous data from " + self.remoteAddress);
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self.end();
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}
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if (self.parent._clients[self.remoteAddress].established === false
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&& data.length >= 1 && data[0] === 0x05) {
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if (data.length >= 3 && (data[1] === 0x01 || data[1] === 0x02) && data[2] === 0x00) {
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if (data[1] === 0x01 || (data.length >= 4 && data[3] === 0x02)) {
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self.parent._clients[self.remoteAddress].established = true;
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self.write(new Buffer([0x05,0x00])); // Ack
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}
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}
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} else if (self.parent._clients[self.remoteAddress].established === true && data.length == 47
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&& data[data.length - 1] === 0x00 && data[data.length - 2] === 0x00) {
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var reqHash = data.toString("ascii", 5, 45);
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if ((reqHash in self.parent._handlers) === true) {
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// Add iq handler for receiving the target's ack
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self.iqId = self.parent._handlers[reqHash].id;
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self.parent.client._iqCallback[self.iqId] = {};
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self.parent.client._iqCallback[self.iqId].success = function(data) {
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if (typeof self.parent._handlers[reqHash].data === "function") {
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self.parent._handlers[reqHash].data(self);
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} else {
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self.write(self.parent._handlers[reqHash].data);
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}
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self.parent._clients[self.remoteAddress].transfered = true;
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delete self.parent.client._iqCallback[self.iqId];
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};
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self.parent.client._iqCallback[self.iqId].error = function(error) {
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console.log(error);
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};
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self.write(self.bytestreams.buildHashResponse(reqHash, true));
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}
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}
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};
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this.onEnd = function(data) {
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delete self.parent._clients[self.remoteAddress];
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};
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};
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