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143 lines
4.2 KiB
143 lines
4.2 KiB
// ex: set sw=4
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'use strict';
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const Gio = imports.gi.Gio;
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const Lang = imports.lang;
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const TorControlClient = new Lang.Class({
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Name: 'TorControlClient',
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_init: function() {
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this._connect();
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this._updateProtocolInfo();
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this._ensureProtocolCompatibility();
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this.authenticate();
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},
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close: function() {
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if (this._connection.is_connected()) {
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this._outputStream.close(null);
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this._inputStream.close(null);
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}
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},
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authenticate: function() {
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var cookie = this._readAuthCookie();
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var reply = this._runCommand('AUTHENTICATE ' + cookie);
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if (reply.statusCode != 250) {
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throw 'Could not authenticate, reason: ' + reply.replyLines.join('\n');
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}
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},
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switchIdentity: function() {
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var reply = this._runCommand('SIGNAL NEWNYM');
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if (reply.statusCode != 250) {
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throw 'Could not change Tor identity, reason: ' + reply.replyLines.join('\n');
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}
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},
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_connect: function() {
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var socketClient = new Gio.SocketClient();
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this._connection = socketClient.connect_to_host('127.0.0.1:9051', null, null);
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this._inputStream = new Gio.DataInputStream({base_stream: this._connection.get_input_stream()});
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this._outputStream = new Gio.DataOutputStream({base_stream: this._connection.get_output_stream()});
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},
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_updateProtocolInfo: function() {
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var reply = this._runCommand('PROTOCOLINFO');
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if (reply.statusCode != 250) {
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throw "Could not read protocol info";
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}
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var protocolInfoVersion;
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var authMethods = [];
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var authCookieFile;
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for (let i = 0; i < reply.replyLines.length; i++) {
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let tokens = reply.replyLines[i].split(' ');
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switch (tokens[0]) {
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case 'PROTOCOLINFO':
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protocolInfoVersion = tokens[1];
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break;
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case 'AUTH':
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let methodsArg = tokens[1].split('=');
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authMethods = methodsArg[1].split(',');
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if (authMethods.indexOf('COOKIE') != -1 || authMethods.indexOf('SAFECOOKIE') != -1) {
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let cookieArg = tokens[2].split('=');
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authCookieFile = cookieArg[1].substr(1, cookieArg[1].length - 2); // strip quotes
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}
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break;
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}
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}
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this._protocolInfo = {
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protocolInfoVersion: protocolInfoVersion,
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authMethods: authMethods,
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authCookieFile: authCookieFile
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}
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},
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_ensureProtocolCompatibility: function() {
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if (this._protocolInfo.protocolInfoVersion != 1) {
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throw 'Cannot handle tor protocol version ' + this._protocolInfo.protocolInfoVersion;
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}
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},
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_runCommand: function(cmd) {
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this._outputStream.put_string(cmd + '\n', null);
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this._outputStream.flush(null);
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var statusCode;
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var replyLines = [];
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do {
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let line = this._readLine();
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var reply = this._parseLine(line);
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statusCode = reply.statusCode;
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replyLines.push(reply.replyLine);
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} while (reply.isMidReplyLine);
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return {
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statusCode: statusCode,
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replyLines: replyLines
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}
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},
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_readLine: function() {
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return this._inputStream.read_line(null, null)[0].toString().trim();
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},
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_parseLine: function(line) {
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return {
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statusCode: parseInt(line.substr(0, 3)),
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isMidReplyLine: (line[3] == '-'),
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replyLine: line.substring(4)
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}
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},
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_readAuthCookie: function() {
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var file = Gio.File.new_for_path(this._protocolInfo.authCookieFile);
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var inputStream = file.read(null);
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var cookieData = inputStream.read_bytes(32, null, null).get_data();
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inputStream.close(null);
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var authCookie = '';
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for (var i = 0; i < cookieData.length; i++) {
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let hexByte = cookieData[i].toString(16);
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if (hexByte.length == 1) {
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hexByte = '0' + hexByte;
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}
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authCookie += hexByte;
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}
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return authCookie;
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}
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});
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