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Remove redeclaration of a variable
[mirror_novnc.git] / core / rfb.js
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a7a89626
JM		 1/*
2 * noVNC: HTML5 VNC client
d58f8b51 3 * Copyright (C) 2012 Joel Martin
7a16304e 4 * Copyright (C) 2016 Samuel Mannehed for Cendio AB
1d728ace 5 * Licensed under MPL 2.0 (see LICENSE.txt)
a7a89626
JM		 6 *
7 * See README.md for usage and integration instructions.
d38db74a
MT		 8 *
9 * TIGHT decoder portion:
10 * (c) 2012 Michael Tinglof, Joe Balaz, Les Piech (Mercuri.ca)
a7a89626
JM		 11 */
12
ae510306
SR		 13/* [module]
14 * import Util from "./util";
15 * import Display from "./display";
bd5340c7 16 * import { Keyboard, Mouse } from "./input/devices"
ae510306
SR		 17 * import Websock from "./websock"
18 * import Base64 from "./base64";
19 * import DES from "./des";
bd5340c7
SR		 20 * import KeyTable from "./input/keysym";
21 * import XtScancode from "./input/xtscancodes";
ae510306
SR		 22 * import Inflator from "./inflator.mod";
23 */
b1dee947 24/*jslint white: false, browser: true */
ae510306 25/*global window, Util, Display, Keyboard, Mouse, Websock, Websock_native, Base64, DES, KeyTable, Inflator, XtScancode */
a7a89626 26
ae510306 27/* [module] export default */ function RFB(defaults) {
b1dee947 28 "use strict";
ae510306
SR		 29 if (!defaults) {
30 defaults = {};
31 }
32
33 this._rfb_host = '';
34 this._rfb_port = 5900;
35 this._rfb_password = '';
36 this._rfb_path = '';
37
3bb12056 38 this._rfb_connection_state = '';
c00ee156 39 this._rfb_init_state = '';
ae510306
SR		 40 this._rfb_version = 0;
41 this._rfb_max_version = 3.8;
42 this._rfb_auth_scheme = '';
3bb12056 43 this._rfb_disconnect_reason = "";
ae510306
SR		 44
45 this._rfb_tightvnc = false;
46 this._rfb_xvp_ver = 0;
47
48 // In preference order
49 this._encodings = [
50 ['COPYRECT', 0x01 ],
51 ['TIGHT', 0x07 ],
52 ['TIGHT_PNG', -260 ],
53 ['HEXTILE', 0x05 ],
54 ['RRE', 0x02 ],
55 ['RAW', 0x00 ],
56
57 // Psuedo-encoding settings
58
59 //['JPEG_quality_lo', -32 ],
60 ['JPEG_quality_med', -26 ],
61 //['JPEG_quality_hi', -23 ],
62 //['compress_lo', -255 ],
63 ['compress_hi', -247 ],
64
65 ['DesktopSize', -223 ],
66 ['last_rect', -224 ],
67 ['Cursor', -239 ],
68 ['QEMUExtendedKeyEvent', -258 ],
69 ['ExtendedDesktopSize', -308 ],
70 ['xvp', -309 ],
71 ['Fence', -312 ],
72 ['ContinuousUpdates', -313 ]
73 ];
74
75 this._encHandlers = {};
76 this._encNames = {};
77 this._encStats = {};
78
79 this._sock = null; // Websock object
80 this._display = null; // Display object
81 this._keyboard = null; // Keyboard input handler object
82 this._mouse = null; // Mouse input handler object
83 this._disconnTimer = null; // disconnection timer
84 this._msgTimer = null; // queued handle_msg timer
85
86 this._supportsFence = false;
87
88 this._supportsContinuousUpdates = false;
89 this._enabledContinuousUpdates = false;
90
91 // Frame buffer update state
92 this._FBU = {
93 rects: 0,
94 subrects: 0, // RRE
95 lines: 0, // RAW
96 tiles: 0, // HEXTILE
97 bytes: 0,
98 x: 0,
99 y: 0,
100 width: 0,
101 height: 0,
102 encoding: 0,
103 subencoding: -1,
104 background: null,
105 zlib: [] // TIGHT zlib streams
106 };
5210330a 107
ae510306
SR		 108 this._fb_Bpp = 4;
109 this._fb_depth = 3;
110 this._fb_width = 0;
111 this._fb_height = 0;
112 this._fb_name = "";
b1dee947 113
ae510306
SR		 114 this._destBuff = null;
115 this._paletteBuff = new Uint8Array(1024); // 256 * 4 (max palette size * max bytes-per-pixel)
b1dee947 116
ae510306 117 this._rre_chunk_sz = 100;
b1dee947 118
ae510306
SR		 119 this._timing = {
120 last_fbu: 0,
121 fbu_total: 0,
122 fbu_total_cnt: 0,
123 full_fbu_total: 0,
124 full_fbu_cnt: 0,
b1dee947 125
ae510306
SR		 126 fbu_rt_start: 0,
127 fbu_rt_total: 0,
128 fbu_rt_cnt: 0,
129 pixels: 0
130 };
131
132 this._supportsSetDesktopSize = false;
133 this._screen_id = 0;
134 this._screen_flags = 0;
135
136 // Mouse state
137 this._mouse_buttonMask = 0;
138 this._mouse_arr = [];
139 this._viewportDragging = false;
140 this._viewportDragPos = {};
141 this._viewportHasMoved = false;
142
143 // QEMU Extended Key Event support - default to false
144 this._qemuExtKeyEventSupported = false;
145
146 // set the default value on user-facing properties
147 Util.set_defaults(this, defaults, {
148 'target': 'null', // VNC display rendering Canvas object
149 'focusContainer': document, // DOM element that captures keyboard input
150 'encrypt': false, // Use TLS/SSL/wss encryption
151 'true_color': true, // Request true color pixel data
152 'local_cursor': false, // Request locally rendered cursor
153 'shared': true, // Request shared mode
154 'view_only': false, // Disable client mouse/keyboard
155 'xvp_password_sep': '@', // Separator for XVP password fields
156 'disconnectTimeout': 3, // Time (s) to wait for disconnection
157 'wsProtocols': ['binary'], // Protocols to use in the WebSocket connection
158 'repeaterID': '', // [UltraVNC] RepeaterID to connect to
159 'viewportDrag': false, // Move the viewport on mouse drags
160
161 // Callback functions
3bb12056 162 'onUpdateState': function () { }, // onUpdateState(rfb, state, oldstate): connection state change
a7127fee 163 'onNotification': function () { }, // onNotification(rfb, msg, level, options): notification for UI
3bb12056 164 'onDisconnected': function () { }, // onDisconnected(rfb, reason): disconnection finished
7d714b15 165 'onPasswordRequired': function () { }, // onPasswordRequired(rfb, msg): VNC password is required
ae510306
SR		 166 'onClipboard': function () { }, // onClipboard(rfb, text): RFB clipboard contents received
167 'onBell': function () { }, // onBell(rfb): RFB Bell message received
168 'onFBUReceive': function () { }, // onFBUReceive(rfb, fbu): RFB FBU received but not yet processed
169 'onFBUComplete': function () { }, // onFBUComplete(rfb, fbu): RFB FBU received and processed
170 'onFBResize': function () { }, // onFBResize(rfb, width, height): frame buffer resized
171 'onDesktopName': function () { }, // onDesktopName(rfb, name): desktop name received
172 'onXvpInit': function () { } // onXvpInit(version): XVP extensions active for this connection
173 });
174
175 // main setup
176 Util.Debug(">> RFB.constructor");
177
178 // populate encHandlers with bound versions
179 Object.keys(RFB.encodingHandlers).forEach(function (encName) {
180 this._encHandlers[encName] = RFB.encodingHandlers[encName].bind(this);
181 }.bind(this));
182
183 // Create lookup tables based on encoding number
184 for (var i = 0; i < this._encodings.length; i++) {
185 this._encHandlers[this._encodings[i][1]] = this._encHandlers[this._encodings[i][0]];
186 this._encNames[this._encodings[i][1]] = this._encodings[i][0];
187 this._encStats[this._encodings[i][1]] = [0, 0];
188 }
189
190 // NB: nothing that needs explicit teardown should be done
191 // before this point, since this can throw an exception
192 try {
193 this._display = new Display({target: this._target});
194 } catch (exc) {
195 Util.Error("Display exception: " + exc);
196 throw exc;
197 }
198
199 this._keyboard = new Keyboard({target: this._focusContainer,
200 onKeyPress: this._handleKeyPress.bind(this)});
201
202 this._mouse = new Mouse({target: this._target,
203 onMouseButton: this._handleMouseButton.bind(this),
204 onMouseMove: this._handleMouseMove.bind(this),
205 notify: this._keyboard.sync.bind(this._keyboard)});
206
207 this._sock = new Websock();
208 this._sock.on('message', this._handle_message.bind(this));
209 this._sock.on('open', function () {
c2a4d3ef 210 if ((this._rfb_connection_state === 'connecting') &&
c00ee156
SM		 211 (this._rfb_init_state === '')) {
212 this._rfb_init_state = 'ProtocolVersion';
213 Util.Debug("Starting VNC handshake");
ae510306
SR		 214 } else {
215 this._fail("Got unexpected WebSocket connection");
216 }
217 }.bind(this));
218 this._sock.on('close', function (e) {
219 Util.Warn("WebSocket on-close event");
220 var msg = "";
221 if (e.code) {
222 msg = " (code: " + e.code;
223 if (e.reason) {
224 msg += ", reason: " + e.reason;
b1dee947 225 }
ae510306
SR		 226 msg += ")";
227 }
c00ee156 228 switch (this._rfb_connection_state) {
c2a4d3ef 229 case 'disconnecting':
3bb12056 230 this._updateConnectionState('disconnected');
c00ee156 231 break;
c2a4d3ef 232 case 'connecting':
c00ee156
SM		 233 this._fail('Failed to connect to server' + msg);
234 break;
c00ee156
SM		 235 case 'disconnected':
236 Util.Error("Received onclose while disconnected" + msg);
237 break;
238 default:
239 this._fail("Server disconnected" + msg);
240 break;
a679a97d 241 }
ae510306
SR		 242 this._sock.off('close');
243 }.bind(this));
244 this._sock.on('error', function (e) {
245 Util.Warn("WebSocket on-error event");
246 });
8db09746 247
ae510306 248 this._init_vars();
6c145147 249 this._cleanup();
ae510306
SR		 250
251 var rmode = this._display.get_render_mode();
3bb12056 252 Util.Info("Using native WebSockets, render mode: " + rmode);
ae510306
SR		 253
254 Util.Debug("<< RFB.constructor");
255};
a7a89626 256
ae510306 257(function() {
b1dee947
SR		 258 RFB.prototype = {
259 // Public methods
260 connect: function (host, port, password, path) {
261 this._rfb_host = host;
262 this._rfb_port = port;
263 this._rfb_password = (password !== undefined) ? password : "";
264 this._rfb_path = (path !== undefined) ? path : "";
a7a89626 265
b1dee947
SR		 266 if (!this._rfb_host || !this._rfb_port) {
267 return this._fail("Must set host and port");
268 }
e3efeb32 269
c00ee156 270 this._rfb_init_state = '';
c2a4d3ef 271 this._updateConnectionState('connecting');
4e0c36dd 272 return true;
b1dee947
SR		 273 },
274
275 disconnect: function () {
3bb12056 276 this._updateConnectionState('disconnecting');
155d78b3
JS		 277 this._sock.off('error');
278 this._sock.off('message');
279 this._sock.off('open');
b1dee947
SR		 280 },
281
282 sendPassword: function (passwd) {
283 this._rfb_password = passwd;
3af1a3a0 284 setTimeout(this._init_msg.bind(this), 0);
b1dee947
SR		 285 },
286
287 sendCtrlAltDel: function () {
c2a4d3ef 288 if (this._rfb_connection_state !== 'connected' || this._view_only) { return false; }
b1dee947
SR		 289 Util.Info("Sending Ctrl-Alt-Del");
290
ae510306
SR		 291 RFB.messages.keyEvent(this._sock, KeyTable.XK_Control_L, 1);
292 RFB.messages.keyEvent(this._sock, KeyTable.XK_Alt_L, 1);
293 RFB.messages.keyEvent(this._sock, KeyTable.XK_Delete, 1);
294 RFB.messages.keyEvent(this._sock, KeyTable.XK_Delete, 0);
295 RFB.messages.keyEvent(this._sock, KeyTable.XK_Alt_L, 0);
296 RFB.messages.keyEvent(this._sock, KeyTable.XK_Control_L, 0);
4e0c36dd 297 return true;
b1dee947
SR		 298 },
299
300 xvpOp: function (ver, op) {
301 if (this._rfb_xvp_ver < ver) { return false; }
302 Util.Info("Sending XVP operation " + op + " (version " + ver + ")");
303 this._sock.send_string("\xFA\x00" + String.fromCharCode(ver) + String.fromCharCode(op));
304 return true;
305 },
306
307 xvpShutdown: function () {
308 return this.xvpOp(1, 2);
309 },
310
311 xvpReboot: function () {
312 return this.xvpOp(1, 3);
313 },
314
315 xvpReset: function () {
316 return this.xvpOp(1, 4);
317 },
318
319 // Send a key press. If 'down' is not specified then send a down key
320 // followed by an up key.
321 sendKey: function (code, down) {
c2a4d3ef 322 if (this._rfb_connection_state !== 'connected' || this._view_only) { return false; }
b1dee947
SR		 323 if (typeof down !== 'undefined') {
324 Util.Info("Sending key code (" + (down ? "down" : "up") + "): " + code);
9ff86fb7 325 RFB.messages.keyEvent(this._sock, code, down ? 1 : 0);
b1dee947
SR		 326 } else {
327 Util.Info("Sending key code (down + up): " + code);
9ff86fb7
SR		 328 RFB.messages.keyEvent(this._sock, code, 1);
329 RFB.messages.keyEvent(this._sock, code, 0);
b1dee947 330 }
4e0c36dd 331 return true;
b1dee947
SR		 332 },
333
334 clipboardPasteFrom: function (text) {
c2a4d3ef 335 if (this._rfb_connection_state !== 'connected') { return; }
9ff86fb7 336 RFB.messages.clientCutText(this._sock, text);
b1dee947 337 },
e3efeb32 338
777cb7a0 339 // Requests a change of remote desktop size. This message is an extension
340 // and may only be sent if we have received an ExtendedDesktopSize message
ae116051 341 requestDesktopSize: function (width, height) {
c2a4d3ef 342 if (this._rfb_connection_state !== 'connected') { return; }
b0ec6509 343
344 if (this._supportsSetDesktopSize) {
ae116051
S		 345 RFB.messages.setDesktopSize(this._sock, width, height,
346 this._screen_id, this._screen_flags);
347 this._sock.flush();
b0ec6509 348 }
349 },
350
351
b1dee947
SR		 352 // Private methods
353
354 _connect: function () {
355 Util.Debug(">> RFB.connect");
356
357 var uri;
358 if (typeof UsingSocketIO !== 'undefined') {
359 uri = 'http';
360 } else {
361 uri = this._encrypt ? 'wss' : 'ws';
159ad55d 362 }
e3efeb32 363
b1dee947
SR		 364 uri += '://' + this._rfb_host + ':' + this._rfb_port + '/' + this._rfb_path;
365 Util.Info("connecting to " + uri);
a7a89626 366
58ca1978 367 this._sock.open(uri, this._wsProtocols);
a7a89626 368
b1dee947
SR		 369 Util.Debug("<< RFB.connect");
370 },
a7a89626 371
b1dee947
SR		 372 _init_vars: function () {
373 // reset state
b1dee947
SR		 374 this._FBU.rects = 0;
375 this._FBU.subrects = 0; // RRE and HEXTILE
376 this._FBU.lines = 0; // RAW
377 this._FBU.tiles = 0; // HEXTILE
378 this._FBU.zlibs = []; // TIGHT zlib encoders
379 this._mouse_buttonMask = 0;
380 this._mouse_arr = [];
381 this._rfb_tightvnc = false;
8db09746 382
b1dee947
SR		 383 // Clear the per connection encoding stats
384 var i;
385 for (i = 0; i < this._encodings.length; i++) {
386 this._encStats[this._encodings[i][1]][0] = 0;
387 }
a7a89626 388
b1dee947 389 for (i = 0; i < 4; i++) {
ae510306 390 this._FBU.zlibs[i] = new Inflator.Inflate();
b1dee947
SR		 391 }
392 },
393
394 _print_stats: function () {
395 Util.Info("Encoding stats for this connection:");
396 var i, s;
397 for (i = 0; i < this._encodings.length; i++) {
398 s = this._encStats[this._encodings[i][1]];
399 if (s[0] + s[1] > 0) {
400 Util.Info(" " + this._encodings[i][0] + ": " + s[0] + " rects");
401 }
402 }
a7a89626 403
b1dee947
SR		 404 Util.Info("Encoding stats since page load:");
405 for (i = 0; i < this._encodings.length; i++) {
406 s = this._encStats[this._encodings[i][1]];
407 Util.Info(" " + this._encodings[i][0] + ": " + s[1] + " rects");
408 }
409 },
a7a89626 410
6c145147 411 _cleanup: function () {
d9fc1c7b
SR		 412 if (this._msgTimer) {
413 clearInterval(this._msgTimer);
414 this._msgTimer = null;
415 }
416
417 if (this._display && this._display.get_context()) {
418 this._keyboard.ungrab();
419 this._mouse.ungrab();
3bb12056
SM		 420 this._display.defaultCursor();
421 if (Util.get_logging() !== 'debug') {
d9fc1c7b
SR		 422 // Show noVNC logo on load and when disconnected, unless in
423 // debug mode
424 this._display.clear();
425 }
426 }
d9fc1c7b 427 },
a7a89626 428
b1dee947 429 /*
c00ee156 430 * Connection states:
c2a4d3ef
SM		 431 * connecting
432 * connected
433 * disconnecting
3bb12056 434 * disconnected - permanent state
b1dee947 435 */
3bb12056 436 _updateConnectionState: function (state) {
c00ee156 437 var oldstate = this._rfb_connection_state;
b1dee947
SR		 438
439 if (state === oldstate) {
b1dee947 440 Util.Debug("Already in state '" + state + "', ignoring");
4cfd49c8 441 return;
b1dee947 442 }
a679a97d 443
3bb12056
SM		 444 // The 'disconnected' state is permanent for each RFB object
445 if (oldstate === 'disconnected') {
446 Util.Error("Tried changing state of a disconnected RFB object");
447 return;
b1dee947
SR		 448 }
449
3bb12056 450 this._rfb_connection_state = state;
a5df24b4 451
52e9cc48
SM		 452 var smsg = "New state '" + state + "', was '" + oldstate + "'.";
453 Util.Debug(smsg);
454
c2a4d3ef 455 if (this._disconnTimer && state !== 'disconnecting') {
b1dee947
SR		 456 Util.Debug("Clearing disconnect timer");
457 clearTimeout(this._disconnTimer);
458 this._disconnTimer = null;
e543525f 459 this._sock.off('close'); // make sure we don't get a double event
b1dee947 460 }
06a9ef0c 461
3bb12056 462 this._onUpdateState(this, state, oldstate);
b1dee947 463 switch (state) {
c2a4d3ef 464 case 'connected':
3bb12056
SM		 465 if (oldstate !== 'connecting') {
466 Util.Error("Bad transition to connected state, " +
467 "previous connection state: " + oldstate);
468 return;
469 }
470 break;
471
472 case 'disconnected':
473 if (oldstate !== 'disconnecting') {
474 Util.Error("Bad transition to disconnected state, " +
475 "previous connection state: " + oldstate);
476 return;
477 }
478
479 if (this._rfb_disconnect_reason !== "") {
480 this._onDisconnected(this, this._rfb_disconnect_reason);
481 } else {
482 // No reason means clean disconnect
483 this._onDisconnected(this);
b1dee947
SR		 484 }
485 break;
486
c2a4d3ef 487 case 'connecting':
b1dee947 488 this._init_vars();
3bb12056
SM		 489
490 // WebSocket.onopen transitions to the RFB init states
b1dee947 491 this._connect();
b1dee947
SR		 492 break;
493
c2a4d3ef 494 case 'disconnecting':
6c145147
SM		 495 this._cleanup();
496 this._sock.close(); // transitions to 'disconnected'
3bb12056 497
b1dee947 498 this._disconnTimer = setTimeout(function () {
3bb12056
SM		 499 this._rfb_disconnect_reason = "Disconnect timeout";
500 this._updateConnectionState('disconnected');
b1dee947
SR		 501 }.bind(this), this._disconnectTimeout * 1000);
502
503 this._print_stats();
b1dee947 504 break;
a5df24b4 505
b1dee947 506 default:
3bb12056
SM		 507 Util.Error("Unknown connection state: " + state);
508 return;
159c50c0 509 }
b1dee947 510 },
a5df24b4 511
b1dee947 512 _fail: function (msg) {
3bb12056
SM		 513 switch (this._rfb_connection_state) {
514 case 'disconnecting':
515 Util.Error("Error while disconnecting: " + msg);
516 break;
517 case 'connected':
518 Util.Error("Error while connected: " + msg);
519 break;
520 case 'connecting':
521 Util.Error("Error while connecting: " + msg);
522 break;
523 default:
524 Util.Error("RFB error: " + msg);
525 break;
526 }
527 this._rfb_disconnect_reason = msg;
528 this._updateConnectionState('disconnecting');
b1dee947
SR		 529 return false;
530 },
06a9ef0c 531
a7127fee
SM		 532 /*
533 * Send a notification to the UI. Valid levels are:
534 * 'normal'|'warn'|'error'
535 *
536 * NOTE: Options could be added in the future.
537 * NOTE: If this function is called multiple times, remember that the
538 * interface could be only showing the latest notification.
539 */
540 _notification: function(msg, level, options) {
541 switch (level) {
542 case 'normal':
543 case 'warn':
544 case 'error':
545 Util.Debug("Notification[" + level + "]:" + msg);
546 break;
547 default:
548 Util.Error("Invalid notification level: " + level);
549 return;
550 }
551
552 if (options) {
553 this._onNotification(this, msg, level, options);
554 } else {
555 this._onNotification(this, msg, level);
556 }
557 },
558
b1dee947
SR		 559 _handle_message: function () {
560 if (this._sock.rQlen() === 0) {
561 Util.Warn("handle_message called on an empty receive queue");
562 return;
563 }
8db09746 564
c00ee156 565 switch (this._rfb_connection_state) {
b1dee947 566 case 'disconnected':
b1dee947
SR		 567 Util.Error("Got data while disconnected");
568 break;
c2a4d3ef 569 case 'connected':
b1dee947
SR		 570 if (this._normal_msg() && this._sock.rQlen() > 0) {
571 // true means we can continue processing
572 // Give other events a chance to run
573 if (this._msgTimer === null) {
574 Util.Debug("More data to process, creating timer");
575 this._msgTimer = setTimeout(function () {
576 this._msgTimer = null;
577 this._handle_message();
3af1a3a0 578 }.bind(this), 0);
b1dee947
SR		 579 } else {
580 Util.Debug("More data to process, existing timer");
581 }
582 }
583 break;
584 default:
585 this._init_msg();
586 break;
587 }
588 },
8db09746 589
8f06673a 590 _handleKeyPress: function (keyevent) {
b1dee947 591 if (this._view_only) { return; } // View only, skip keyboard, events
8f06673a
DHB		 592
593 var down = (keyevent.type == 'keydown');
594 if (this._qemuExtKeyEventSupported) {
595 var scancode = XtScancode[keyevent.code];
596 if (scancode) {
597 var keysym = keyevent.keysym;
598 RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode);
599 } else {
600 Util.Error('Unable to find a xt scancode for code = ' + keyevent.code);
601 }
602 } else {
603 keysym = keyevent.keysym.keysym;
604 RFB.messages.keyEvent(this._sock, keysym, down);
605 }
b1dee947 606 },
8db09746 607
b1dee947
SR		 608 _handleMouseButton: function (x, y, down, bmask) {
609 if (down) {
610 this._mouse_buttonMask |= bmask;
611 } else {
d02a99f0 612 this._mouse_buttonMask ^= bmask;
b1dee947 613 }
8db09746 614
b1dee947
SR		 615 if (this._viewportDrag) {
616 if (down && !this._viewportDragging) {
617 this._viewportDragging = true;
618 this._viewportDragPos = {'x': x, 'y': y};
8db09746 619
b1dee947
SR		 620 // Skip sending mouse events
621 return;
622 } else {
623 this._viewportDragging = false;
27e77d46
JB		 624
625 // If the viewport didn't actually move, then treat as a mouse click event
626 // Send the button down event here, as the button up event is sent at the end of this function
627 if (!this._viewportHasMoved && !this._view_only) {
628 RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), bmask);
629 }
630 this._viewportHasMoved = false;
b1dee947 631 }
b50f3406 632 }
8db09746 633
b1dee947
SR		 634 if (this._view_only) { return; } // View only, skip mouse events
635
c2a4d3ef 636 if (this._rfb_connection_state !== 'connected') { return; }
9ff86fb7 637 RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask);
b1dee947
SR		 638 },
639
640 _handleMouseMove: function (x, y) {
641 if (this._viewportDragging) {
642 var deltaX = this._viewportDragPos.x - x;
643 var deltaY = this._viewportDragPos.y - y;
b1dee947 644
32df3fdb 645 // The goal is to trigger on a certain physical width, the
646 // devicePixelRatio brings us a bit closer but is not optimal.
f52105bc 647 var dragThreshold = 10 * (window.devicePixelRatio || 1);
27e77d46 648
32df3fdb 649 if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold ||
650 Math.abs(deltaY) > dragThreshold)) {
651 this._viewportHasMoved = true;
652
653 this._viewportDragPos = {'x': x, 'y': y};
654 this._display.viewportChangePos(deltaX, deltaY);
655 }
8db09746 656
b1dee947
SR		 657 // Skip sending mouse events
658 return;
659 }
660
661 if (this._view_only) { return; } // View only, skip mouse events
662
c2a4d3ef 663 if (this._rfb_connection_state !== 'connected') { return; }
9ff86fb7 664 RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask);
b1dee947
SR		 665 },
666
667 // Message Handlers
668
669 _negotiate_protocol_version: function () {
670 if (this._sock.rQlen() < 12) {
671 return this._fail("Incomplete protocol version");
672 }
673
674 var sversion = this._sock.rQshiftStr(12).substr(4, 7);
675 Util.Info("Server ProtocolVersion: " + sversion);
676 var is_repeater = 0;
677 switch (sversion) {
678 case "000.000": // UltraVNC repeater
679 is_repeater = 1;
680 break;
681 case "003.003":
682 case "003.006": // UltraVNC
683 case "003.889": // Apple Remote Desktop
684 this._rfb_version = 3.3;
685 break;
686 case "003.007":
687 this._rfb_version = 3.7;
688 break;
689 case "003.008":
690 case "004.000": // Intel AMT KVM
691 case "004.001": // RealVNC 4.6
49aa5b81 692 case "005.000": // RealVNC 5.3
b1dee947
SR		 693 this._rfb_version = 3.8;
694 break;
695 default:
696 return this._fail("Invalid server version " + sversion);
697 }
698
699 if (is_repeater) {
700 var repeaterID = this._repeaterID;
701 while (repeaterID.length < 250) {
702 repeaterID += "\0";
8db09746 703 }
b1dee947
SR		 704 this._sock.send_string(repeaterID);
705 return true;
8db09746 706 }
b1dee947
SR		 707
708 if (this._rfb_version > this._rfb_max_version) {
709 this._rfb_version = this._rfb_max_version;
8db09746 710 }
b1dee947 711
b1dee947
SR		 712 var cversion = "00" + parseInt(this._rfb_version, 10) +
713 ".00" + ((this._rfb_version * 10) % 10);
714 this._sock.send_string("RFB " + cversion + "\n");
c00ee156
SM		 715 Util.Debug('Sent ProtocolVersion: ' + cversion);
716
717 this._rfb_init_state = 'Security';
b1dee947
SR		 718 },
719
720 _negotiate_security: function () {
721 if (this._rfb_version >= 3.7) {
722 // Server sends supported list, client decides
723 var num_types = this._sock.rQshift8();
724 if (this._sock.rQwait("security type", num_types, 1)) { return false; }
725
726 if (num_types === 0) {
727 var strlen = this._sock.rQshift32();
728 var reason = this._sock.rQshiftStr(strlen);
729 return this._fail("Security failure: " + reason);
1f758e87 730 }
b1dee947
SR		 731
732 this._rfb_auth_scheme = 0;
733 var types = this._sock.rQshiftBytes(num_types);
734 Util.Debug("Server security types: " + types);
735 for (var i = 0; i < types.length; i++) {
d5bbe50e
SM		 736 switch (types[i]) {
737 case 1: // None
738 case 2: // VNC Authentication
739 case 16: // Tight
740 case 22: // XVP
741 if (types[i] > this._rfb_auth_scheme) {
742 this._rfb_auth_scheme = types[i];
743 }
744 break;
745 default:
746 break;
b1dee947
SR		 747 }
748 }
749
750 if (this._rfb_auth_scheme === 0) {
751 return this._fail("Unsupported security types: " + types);
03ab2515 752 }
b1dee947
SR		 753
754 this._sock.send([this._rfb_auth_scheme]);
755 } else {
756 // Server decides
757 if (this._sock.rQwait("security scheme", 4)) { return false; }
758 this._rfb_auth_scheme = this._sock.rQshift32();
759 }
760
c00ee156
SM		 761 this._rfb_init_state = 'Authentication';
762 Util.Debug('Authenticating using scheme: ' + this._rfb_auth_scheme);
763
b1dee947
SR		 764 return this._init_msg(); // jump to authentication
765 },
766
767 // authentication
768 _negotiate_xvp_auth: function () {
769 var xvp_sep = this._xvp_password_sep;
770 var xvp_auth = this._rfb_password.split(xvp_sep);
771 if (xvp_auth.length < 3) {
7d714b15
SM		 772 var msg = 'XVP credentials required (user' + xvp_sep +
773 'target' + xvp_sep + 'password) -- got only ' + this._rfb_password;
774 this._onPasswordRequired(this, msg);
b1dee947
SR		 775 return false;
776 }
777
778 var xvp_auth_str = String.fromCharCode(xvp_auth[0].length) +
03ab2515
MS		 779 String.fromCharCode(xvp_auth[1].length) +
780 xvp_auth[0] +
781 xvp_auth[1];
b1dee947
SR		 782 this._sock.send_string(xvp_auth_str);
783 this._rfb_password = xvp_auth.slice(2).join(xvp_sep);
784 this._rfb_auth_scheme = 2;
785 return this._negotiate_authentication();
786 },
787
788 _negotiate_std_vnc_auth: function () {
789 if (this._rfb_password.length === 0) {
b1dee947 790 this._onPasswordRequired(this);
3e3df4db 791 return false;
b1dee947
SR		 792 }
793
794 if (this._sock.rQwait("auth challenge", 16)) { return false; }
795
38781d93
SR		 796 // TODO(directxman12): make genDES not require an Array
797 var challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16));
b1dee947
SR		 798 var response = RFB.genDES(this._rfb_password, challenge);
799 this._sock.send(response);
c00ee156 800 this._rfb_init_state = "SecurityResult";
b1dee947
SR		 801 return true;
802 },
803
804 _negotiate_tight_tunnels: function (numTunnels) {
805 var clientSupportedTunnelTypes = {
806 0: { vendor: 'TGHT', signature: 'NOTUNNEL' }
807 };
808 var serverSupportedTunnelTypes = {};
809 // receive tunnel capabilities
810 for (var i = 0; i < numTunnels; i++) {
811 var cap_code = this._sock.rQshift32();
812 var cap_vendor = this._sock.rQshiftStr(4);
813 var cap_signature = this._sock.rQshiftStr(8);
814 serverSupportedTunnelTypes[cap_code] = { vendor: cap_vendor, signature: cap_signature };
815 }
816
817 // choose the notunnel type
818 if (serverSupportedTunnelTypes[0]) {
819 if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor ||
820 serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) {
821 return this._fail("Client's tunnel type had the incorrect vendor or signature");
8db09746 822 }
b1dee947
SR		 823 this._sock.send([0, 0, 0, 0]); // use NOTUNNEL
824 return false; // wait until we receive the sub auth count to continue
825 } else {
826 return this._fail("Server wanted tunnels, but doesn't support the notunnel type");
827 }
828 },
95eb681b 829
b1dee947
SR		 830 _negotiate_tight_auth: function () {
831 if (!this._rfb_tightvnc) { // first pass, do the tunnel negotiation
832 if (this._sock.rQwait("num tunnels", 4)) { return false; }
833 var numTunnels = this._sock.rQshift32();
834 if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; }
d86cc2d9 835
b1dee947 836 this._rfb_tightvnc = true;
d86cc2d9 837
b1dee947
SR		 838 if (numTunnels > 0) {
839 this._negotiate_tight_tunnels(numTunnels);
840 return false; // wait until we receive the sub auth to continue
841 }
842 }
843
844 // second pass, do the sub-auth negotiation
845 if (this._sock.rQwait("sub auth count", 4)) { return false; }
846 var subAuthCount = this._sock.rQshift32();
33e14629
DS		 847 if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected
848 this._updateState('SecurityResult');
849 return true;
850 }
851
b1dee947 852 if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; }
95eb681b 853
b1dee947
SR		 854 var clientSupportedTypes = {
855 'STDVNOAUTH__': 1,
856 'STDVVNCAUTH_': 2
857 };
d86cc2d9 858
b1dee947 859 var serverSupportedTypes = [];
d86cc2d9 860
b1dee947
SR		 861 for (var i = 0; i < subAuthCount; i++) {
862 var capNum = this._sock.rQshift32();
863 var capabilities = this._sock.rQshiftStr(12);
864 serverSupportedTypes.push(capabilities);
865 }
d86cc2d9 866
b1dee947
SR		 867 for (var authType in clientSupportedTypes) {
868 if (serverSupportedTypes.indexOf(authType) != -1) {
869 this._sock.send([0, 0, 0, clientSupportedTypes[authType]]);
870
871 switch (authType) {
872 case 'STDVNOAUTH__': // no auth
c00ee156 873 this._rfb_init_state = 'SecurityResult';
b1dee947
SR		 874 return true;
875 case 'STDVVNCAUTH_': // VNC auth
876 this._rfb_auth_scheme = 2;
877 return this._init_msg();
878 default:
879 return this._fail("Unsupported tiny auth scheme: " + authType);
880 }
d86cc2d9 881 }
b1dee947 882 }
d86cc2d9 883
4e0c36dd 884 return this._fail("No supported sub-auth types!");
b1dee947
SR		 885 },
886
887 _negotiate_authentication: function () {
888 switch (this._rfb_auth_scheme) {
889 case 0: // connection failed
890 if (this._sock.rQwait("auth reason", 4)) { return false; }
891 var strlen = this._sock.rQshift32();
892 var reason = this._sock.rQshiftStr(strlen);
893 return this._fail("Auth failure: " + reason);
894
895 case 1: // no auth
896 if (this._rfb_version >= 3.8) {
c00ee156 897 this._rfb_init_state = 'SecurityResult';
b1dee947
SR		 898 return true;
899 }
c00ee156 900 this._rfb_init_state = 'ClientInitialisation';
b1dee947
SR		 901 return this._init_msg();
902
903 case 22: // XVP auth
904 return this._negotiate_xvp_auth();
905
906 case 2: // VNC authentication
907 return this._negotiate_std_vnc_auth();
908
909 case 16: // TightVNC Security Type
910 return this._negotiate_tight_auth();
911
912 default:
913 return this._fail("Unsupported auth scheme: " + this._rfb_auth_scheme);
914 }
915 },
916
917 _handle_security_result: function () {
918 if (this._sock.rQwait('VNC auth response ', 4)) { return false; }
919 switch (this._sock.rQshift32()) {
920 case 0: // OK
c00ee156
SM		 921 this._rfb_init_state = 'ClientInitialisation';
922 Util.Debug('Authentication OK');
b1dee947
SR		 923 return this._init_msg();
924 case 1: // failed
925 if (this._rfb_version >= 3.8) {
926 var length = this._sock.rQshift32();
927 if (this._sock.rQwait("SecurityResult reason", length, 8)) { return false; }
928 var reason = this._sock.rQshiftStr(length);
929 return this._fail(reason);
930 } else {
931 return this._fail("Authentication failure");
d86cc2d9 932 }
b1dee947
SR		 933 return false;
934 case 2:
935 return this._fail("Too many auth attempts");
4e0c36dd 936 default:
937 return this._fail("Unknown SecurityResult");
b1dee947
SR		 938 }
939 },
940
941 _negotiate_server_init: function () {
942 if (this._sock.rQwait("server initialization", 24)) { return false; }
943
944 /* Screen size */
945 this._fb_width = this._sock.rQshift16();
946 this._fb_height = this._sock.rQshift16();
9ff86fb7 947 this._destBuff = new Uint8Array(this._fb_width * this._fb_height * 4);
b1dee947
SR		 948
949 /* PIXEL_FORMAT */
950 var bpp = this._sock.rQshift8();
951 var depth = this._sock.rQshift8();
952 var big_endian = this._sock.rQshift8();
953 var true_color = this._sock.rQshift8();
954
955 var red_max = this._sock.rQshift16();
956 var green_max = this._sock.rQshift16();
957 var blue_max = this._sock.rQshift16();
958 var red_shift = this._sock.rQshift8();
959 var green_shift = this._sock.rQshift8();
960 var blue_shift = this._sock.rQshift8();
961 this._sock.rQskipBytes(3); // padding
962
963 // NB(directxman12): we don't want to call any callbacks or print messages until
964 // *after* we're past the point where we could backtrack
965
966 /* Connection name/title */
967 var name_length = this._sock.rQshift32();
968 if (this._sock.rQwait('server init name', name_length, 24)) { return false; }
969 this._fb_name = Util.decodeUTF8(this._sock.rQshiftStr(name_length));
970
971 if (this._rfb_tightvnc) {
972 if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; }
973 // In TightVNC mode, ServerInit message is extended
974 var numServerMessages = this._sock.rQshift16();
975 var numClientMessages = this._sock.rQshift16();
976 var numEncodings = this._sock.rQshift16();
977 this._sock.rQskipBytes(2); // padding
978
979 var totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16;
980 if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + name_length)) { return false; }
981
46494484
SR		 982 // we don't actually do anything with the capability information that TIGHT sends,
983 // so we just skip the all of this.
d86cc2d9 984
46494484
SR		 985 // TIGHT server message capabilities
986 this._sock.rQskipBytes(16 * numServerMessages);
d86cc2d9 987
46494484
SR		 988 // TIGHT client message capabilities
989 this._sock.rQskipBytes(16 * numClientMessages);
990
991 // TIGHT encoding capabilities
992 this._sock.rQskipBytes(16 * numEncodings);
b1dee947
SR		 993 }
994
995 // NB(directxman12): these are down here so that we don't run them multiple times
996 // if we backtrack
997 Util.Info("Screen: " + this._fb_width + "x" + this._fb_height +
998 ", bpp: " + bpp + ", depth: " + depth +
999 ", big_endian: " + big_endian +
1000 ", true_color: " + true_color +
1001 ", red_max: " + red_max +
1002 ", green_max: " + green_max +
1003 ", blue_max: " + blue_max +
1004 ", red_shift: " + red_shift +
1005 ", green_shift: " + green_shift +
1006 ", blue_shift: " + blue_shift);
1007
1008 if (big_endian !== 0) {
1009 Util.Warn("Server native endian is not little endian");
1010 }
1011
1012 if (red_shift !== 16) {
1013 Util.Warn("Server native red-shift is not 16");
1014 }
1015
1016 if (blue_shift !== 0) {
1017 Util.Warn("Server native blue-shift is not 0");
1018 }
1019
1020 // we're past the point where we could backtrack, so it's safe to call this
1021 this._onDesktopName(this, this._fb_name);
1022
1023 if (this._true_color && this._fb_name === "Intel(r) AMT KVM") {
1024 Util.Warn("Intel AMT KVM only supports 8/16 bit depths. Disabling true color");
1025 this._true_color = false;
1026 }
1027
1028 this._display.set_true_color(this._true_color);
b1dee947 1029 this._display.resize(this._fb_width, this._fb_height);
b0ec6509 1030 this._onFBResize(this, this._fb_width, this._fb_height);
b1dee947
SR		 1031 this._keyboard.grab();
1032 this._mouse.grab();
1033
1034 if (this._true_color) {
1035 this._fb_Bpp = 4;
1036 this._fb_depth = 3;
1037 } else {
1038 this._fb_Bpp = 1;
1039 this._fb_depth = 1;
1040 }
1041
9ff86fb7
SR		 1042 RFB.messages.pixelFormat(this._sock, this._fb_Bpp, this._fb_depth, this._true_color);
1043 RFB.messages.clientEncodings(this._sock, this._encodings, this._local_cursor, this._true_color);
76a86ff5 1044 RFB.messages.fbUpdateRequests(this._sock, false, this._display.getCleanDirtyReset(), this._fb_width, this._fb_height);
b1dee947
SR		 1045
1046 this._timing.fbu_rt_start = (new Date()).getTime();
1047 this._timing.pixels = 0;
b1dee947 1048
3bb12056 1049 this._updateConnectionState('connected');
4e0c36dd 1050 return true;
b1dee947
SR		 1051 },
1052
c00ee156
SM		 1053 /* RFB protocol initialization states:
1054 * ProtocolVersion
1055 * Security
1056 * Authentication
1057 * SecurityResult
1058 * ClientInitialization - not triggered by server message
1059 * ServerInitialization
1060 */
b1dee947 1061 _init_msg: function () {
c00ee156 1062 switch (this._rfb_init_state) {
b1dee947
SR		 1063 case 'ProtocolVersion':
1064 return this._negotiate_protocol_version();
1065
1066 case 'Security':
1067 return this._negotiate_security();
1068
1069 case 'Authentication':
1070 return this._negotiate_authentication();
1071
1072 case 'SecurityResult':
1073 return this._handle_security_result();
1074
1075 case 'ClientInitialisation':
1076 this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation
c00ee156 1077 this._rfb_init_state = 'ServerInitialisation';
b1dee947
SR		 1078 return true;
1079
1080 case 'ServerInitialisation':
1081 return this._negotiate_server_init();
4e0c36dd 1082
1083 default:
c00ee156
SM		 1084 return this._fail("Unknown init state: " +
1085 this._rfb_init_state);
b1dee947
SR		 1086 }
1087 },
1088
1089 _handle_set_colour_map_msg: function () {
1090 Util.Debug("SetColorMapEntries");
1091 this._sock.rQskip8(); // Padding
1092
1093 var first_colour = this._sock.rQshift16();
1094 var num_colours = this._sock.rQshift16();
1095 if (this._sock.rQwait('SetColorMapEntries', num_colours * 6, 6)) { return false; }
1096
1097 for (var c = 0; c < num_colours; c++) {
1098 var red = parseInt(this._sock.rQshift16() / 256, 10);
1099 var green = parseInt(this._sock.rQshift16() / 256, 10);
1100 var blue = parseInt(this._sock.rQshift16() / 256, 10);
1101 this._display.set_colourMap([blue, green, red], first_colour + c);
1102 }
1103 Util.Debug("colourMap: " + this._display.get_colourMap());
1104 Util.Info("Registered " + num_colours + " colourMap entries");
1105
1106 return true;
1107 },
1108
1109 _handle_server_cut_text: function () {
1110 Util.Debug("ServerCutText");
1111 if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; }
1112 this._sock.rQskipBytes(3); // Padding
1113 var length = this._sock.rQshift32();
1114 if (this._sock.rQwait("ServerCutText", length, 8)) { return false; }
1115
1116 var text = this._sock.rQshiftStr(length);
1117 this._onClipboard(this, text);
1118
1119 return true;
1120 },
1121
3df13262 1122 _handle_server_fence_msg: function() {
1123 if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; }
1124 this._sock.rQskipBytes(3); // Padding
1125 var flags = this._sock.rQshift32();
1126 var length = this._sock.rQshift8();
1127
1128 if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; }
76a86ff5 1129
1130 if (length > 64) {
1131 Util.Warn("Bad payload length (" + length + ") in fence response");
1132 length = 64;
1133 }
1134
1135 var payload = this._sock.rQshiftStr(length);
3df13262 1136
1137 this._supportsFence = true;
1138
1139 /*
1140 * Fence flags
1141 *
1142 * (1<<0) - BlockBefore
1143 * (1<<1) - BlockAfter
1144 * (1<<2) - SyncNext
1145 * (1<<31) - Request
1146 */
1147
1148 if (!(flags & (1<<31))) {
1149 return this._fail("Unexpected fence response");
1150 }
1151
1152 // Filter out unsupported flags
1153 // FIXME: support syncNext
1154 flags &= (1<<0) | (1<<1);
1155
1156 // BlockBefore and BlockAfter are automatically handled by
1157 // the fact that we process each incoming message
1158 // synchronuosly.
1159 RFB.messages.clientFence(this._sock, flags, payload);
1160
1161 return true;
1162 },
1163
b1dee947
SR		 1164 _handle_xvp_msg: function () {
1165 if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; }
1166 this._sock.rQskip8(); // Padding
1167 var xvp_ver = this._sock.rQshift8();
1168 var xvp_msg = this._sock.rQshift8();
1169
1170 switch (xvp_msg) {
1171 case 0: // XVP_FAIL
a7127fee
SM		 1172 Util.Error("Operation Failed");
1173 this._notification("XVP Operation Failed", 'error');
b1dee947
SR		 1174 break;
1175 case 1: // XVP_INIT
1176 this._rfb_xvp_ver = xvp_ver;
1177 Util.Info("XVP extensions enabled (version " + this._rfb_xvp_ver + ")");
1178 this._onXvpInit(this._rfb_xvp_ver);
1179 break;
1180 default:
1181 this._fail("Disconnected: illegal server XVP message " + xvp_msg);
1182 break;
1183 }
1184
1185 return true;
1186 },
1187
1188 _normal_msg: function () {
1189 var msg_type;
1190
1191 if (this._FBU.rects > 0) {
1192 msg_type = 0;
1193 } else {
1194 msg_type = this._sock.rQshift8();
1195 }
1196
1197 switch (msg_type) {
1198 case 0: // FramebufferUpdate
1199 var ret = this._framebufferUpdate();
1200 if (ret) {
76a86ff5 1201 RFB.messages.fbUpdateRequests(this._sock,
1202 this._enabledContinuousUpdates,
1203 this._display.getCleanDirtyReset(),
1204 this._fb_width, this._fb_height);
b1dee947
SR		 1205 }
1206 return ret;
1207
1208 case 1: // SetColorMapEntries
1209 return this._handle_set_colour_map_msg();
1210
1211 case 2: // Bell
1212 Util.Debug("Bell");
1213 this._onBell(this);
1214 return true;
1215
1216 case 3: // ServerCutText
1217 return this._handle_server_cut_text();
1218
76a86ff5 1219 case 150: // EndOfContinuousUpdates
1220 var first = !(this._supportsContinuousUpdates);
1221 this._supportsContinuousUpdates = true;
1222 this._enabledContinuousUpdates = false;
1223 if (first) {
1224 this._enabledContinuousUpdates = true;
1225 this._updateContinuousUpdates();
1226 Util.Info("Enabling continuous updates.");
1227 } else {
1228 // FIXME: We need to send a framebufferupdaterequest here
1229 // if we add support for turning off continuous updates
1230 }
1231 return true;
1232
3df13262 1233 case 248: // ServerFence
1234 return this._handle_server_fence_msg();
1235
b1dee947
SR		 1236 case 250: // XVP
1237 return this._handle_xvp_msg();
1238
1239 default:
1240 this._fail("Disconnected: illegal server message type " + msg_type);
1241 Util.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30));
1242 return true;
1243 }
1244 },
1245
1246 _framebufferUpdate: function () {
1247 var ret = true;
1248 var now;
1249
1250 if (this._FBU.rects === 0) {
1251 if (this._sock.rQwait("FBU header", 3, 1)) { return false; }
1252 this._sock.rQskip8(); // Padding
1253 this._FBU.rects = this._sock.rQshift16();
1254 this._FBU.bytes = 0;
1255 this._timing.cur_fbu = 0;
1256 if (this._timing.fbu_rt_start > 0) {
1257 now = (new Date()).getTime();
1258 Util.Info("First FBU latency: " + (now - this._timing.fbu_rt_start));
1259 }
1260 }
1261
1262 while (this._FBU.rects > 0) {
c2a4d3ef 1263 if (this._rfb_connection_state !== 'connected') { return false; }
b1dee947
SR		 1264
1265 if (this._sock.rQwait("FBU", this._FBU.bytes)) { return false; }
1266 if (this._FBU.bytes === 0) {
1267 if (this._sock.rQwait("rect header", 12)) { return false; }
1268 /* New FramebufferUpdate */
1269
1270 var hdr = this._sock.rQshiftBytes(12);
1271 this._FBU.x = (hdr[0] << 8) + hdr[1];
1272 this._FBU.y = (hdr[2] << 8) + hdr[3];
1273 this._FBU.width = (hdr[4] << 8) + hdr[5];
1274 this._FBU.height = (hdr[6] << 8) + hdr[7];
1275 this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) +
1276 (hdr[10] << 8) + hdr[11], 10);
1277
1278 this._onFBUReceive(this,
1279 {'x': this._FBU.x, 'y': this._FBU.y,
1280 'width': this._FBU.width, 'height': this._FBU.height,
1281 'encoding': this._FBU.encoding,
1282 'encodingName': this._encNames[this._FBU.encoding]});
1283
1284 if (!this._encNames[this._FBU.encoding]) {
1285 this._fail("Disconnected: unsupported encoding " +
1286 this._FBU.encoding);
60440cee 1287 return false;
aa787069 1288 }
8db09746 1289 }
ac99a1f7 1290
b1dee947
SR		 1291 this._timing.last_fbu = (new Date()).getTime();
1292
c7925074 1293 ret = this._encHandlers[this._FBU.encoding]();
b1dee947
SR		 1294
1295 now = (new Date()).getTime();
1296 this._timing.cur_fbu += (now - this._timing.last_fbu);
1297
1298 if (ret) {
1299 this._encStats[this._FBU.encoding][0]++;
1300 this._encStats[this._FBU.encoding][1]++;
1301 this._timing.pixels += this._FBU.width * this._FBU.height;
1302 }
1303
1304 if (this._timing.pixels >= (this._fb_width * this._fb_height)) {
1305 if ((this._FBU.width === this._fb_width && this._FBU.height === this._fb_height) ||
1306 this._timing.fbu_rt_start > 0) {
1307 this._timing.full_fbu_total += this._timing.cur_fbu;
1308 this._timing.full_fbu_cnt++;
1309 Util.Info("Timing of full FBU, curr: " +
1310 this._timing.cur_fbu + ", total: " +
1311 this._timing.full_fbu_total + ", cnt: " +
1312 this._timing.full_fbu_cnt + ", avg: " +
1313 (this._timing.full_fbu_total / this._timing.full_fbu_cnt));
1314 }
1315
1316 if (this._timing.fbu_rt_start > 0) {
1317 var fbu_rt_diff = now - this._timing.fbu_rt_start;
1318 this._timing.fbu_rt_total += fbu_rt_diff;
1319 this._timing.fbu_rt_cnt++;
1320 Util.Info("full FBU round-trip, cur: " +
1321 fbu_rt_diff + ", total: " +
1322 this._timing.fbu_rt_total + ", cnt: " +
1323 this._timing.fbu_rt_cnt + ", avg: " +
1324 (this._timing.fbu_rt_total / this._timing.fbu_rt_cnt));
1325 this._timing.fbu_rt_start = 0;
1326 }
1327 }
8db09746 1328
b1dee947 1329 if (!ret) { return ret; } // need more data
d86cc2d9 1330 }
d86cc2d9 1331
b1dee947
SR		 1332 this._onFBUComplete(this,
1333 {'x': this._FBU.x, 'y': this._FBU.y,
1334 'width': this._FBU.width, 'height': this._FBU.height,
1335 'encoding': this._FBU.encoding,
1336 'encodingName': this._encNames[this._FBU.encoding]});
8db09746 1337
b1dee947
SR		 1338 return true; // We finished this FBU
1339 },
76a86ff5 1340
1341 _updateContinuousUpdates: function() {
1342 if (!this._enabledContinuousUpdates) { return; }
1343
1344 RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0,
1345 this._fb_width, this._fb_height);
1346 }
b1dee947 1347 };
8db09746 1348
b1dee947
SR		 1349 Util.make_properties(RFB, [
1350 ['target', 'wo', 'dom'], // VNC display rendering Canvas object
1351 ['focusContainer', 'wo', 'dom'], // DOM element that captures keyboard input
1352 ['encrypt', 'rw', 'bool'], // Use TLS/SSL/wss encryption
1353 ['true_color', 'rw', 'bool'], // Request true color pixel data
1354 ['local_cursor', 'rw', 'bool'], // Request locally rendered cursor
1355 ['shared', 'rw', 'bool'], // Request shared mode
1356 ['view_only', 'rw', 'bool'], // Disable client mouse/keyboard
1357 ['xvp_password_sep', 'rw', 'str'], // Separator for XVP password fields
1358 ['disconnectTimeout', 'rw', 'int'], // Time (s) to wait for disconnection
1359 ['wsProtocols', 'rw', 'arr'], // Protocols to use in the WebSocket connection
1360 ['repeaterID', 'rw', 'str'], // [UltraVNC] RepeaterID to connect to
1361 ['viewportDrag', 'rw', 'bool'], // Move the viewport on mouse drags
1362
1363 // Callback functions
3bb12056 1364 ['onUpdateState', 'rw', 'func'], // onUpdateState(rfb, state, oldstate): connection state change
a7127fee 1365 ['onNotification', 'rw', 'func'], // onNotification(rfb, msg, level, options): notification for the UI
3bb12056 1366 ['onDisconnected', 'rw', 'func'], // onDisconnected(rfb, reason): disconnection finished
7d714b15 1367 ['onPasswordRequired', 'rw', 'func'], // onPasswordRequired(rfb, msg): VNC password is required
b1dee947
SR		 1368 ['onClipboard', 'rw', 'func'], // onClipboard(rfb, text): RFB clipboard contents received
1369 ['onBell', 'rw', 'func'], // onBell(rfb): RFB Bell message received
1370 ['onFBUReceive', 'rw', 'func'], // onFBUReceive(rfb, fbu): RFB FBU received but not yet processed
1371 ['onFBUComplete', 'rw', 'func'], // onFBUComplete(rfb, fbu): RFB FBU received and processed
1372 ['onFBResize', 'rw', 'func'], // onFBResize(rfb, width, height): frame buffer resized
1373 ['onDesktopName', 'rw', 'func'], // onDesktopName(rfb, name): desktop name received
c4df8ca9 1374 ['onXvpInit', 'rw', 'func'] // onXvpInit(version): XVP extensions active for this connection
b1dee947 1375 ]);
a7a89626 1376
b1dee947
SR		 1377 RFB.prototype.set_local_cursor = function (cursor) {
1378 if (!cursor || (cursor in {'0': 1, 'no': 1, 'false': 1})) {
1379 this._local_cursor = false;
b804b3e4 1380 this._display.disableLocalCursor(); //Only show server-side cursor
b1dee947
SR		 1381 } else {
1382 if (this._display.get_cursor_uri()) {
1383 this._local_cursor = true;
a7a89626 1384 } else {
b1dee947 1385 Util.Warn("Browser does not support local cursor");
8ce27ddb 1386 this._display.disableLocalCursor();
a7a89626
JM		 1387 }
1388 }
b1dee947
SR		 1389 };
1390
1391 RFB.prototype.get_display = function () { return this._display; };
1392 RFB.prototype.get_keyboard = function () { return this._keyboard; };
1393 RFB.prototype.get_mouse = function () { return this._mouse; };
1394
1395 // Class Methods
1396 RFB.messages = {
9ff86fb7
SR		 1397 keyEvent: function (sock, keysym, down) {
1398 var buff = sock._sQ;
1399 var offset = sock._sQlen;
1400
1401 buff[offset] = 4; // msg-type
1402 buff[offset + 1] = down;
1403
1404 buff[offset + 2] = 0;
1405 buff[offset + 3] = 0;
1406
1407 buff[offset + 4] = (keysym >> 24);
1408 buff[offset + 5] = (keysym >> 16);
1409 buff[offset + 6] = (keysym >> 8);
1410 buff[offset + 7] = keysym;
1411
1412 sock._sQlen += 8;
89d2837f 1413 sock.flush();
b1dee947
SR		 1414 },
1415
8f06673a
DHB		 1416 QEMUExtendedKeyEvent: function (sock, keysym, down, keycode) {
1417 function getRFBkeycode(xt_scancode) {
1418 var upperByte = (keycode >> 8);
1419 var lowerByte = (keycode & 0x00ff);
1420 if (upperByte === 0xe0 && lowerByte < 0x7f) {
1421 lowerByte = lowerByte | 0x80;
1422 return lowerByte;
1423 }
058be785 1424 return xt_scancode;
8f06673a
DHB		 1425 }
1426
1427 var buff = sock._sQ;
1428 var offset = sock._sQlen;
1429
1430 buff[offset] = 255; // msg-type
1431 buff[offset + 1] = 0; // sub msg-type
1432
1433 buff[offset + 2] = (down >> 8);
1434 buff[offset + 3] = down;
1435
1436 buff[offset + 4] = (keysym >> 24);
1437 buff[offset + 5] = (keysym >> 16);
1438 buff[offset + 6] = (keysym >> 8);
1439 buff[offset + 7] = keysym;
1440
058be785 1441 var RFBkeycode = getRFBkeycode(keycode);
8f06673a
DHB		 1442
1443 buff[offset + 8] = (RFBkeycode >> 24);
1444 buff[offset + 9] = (RFBkeycode >> 16);
1445 buff[offset + 10] = (RFBkeycode >> 8);
1446 buff[offset + 11] = RFBkeycode;
1447
1448 sock._sQlen += 12;
1449 sock.flush();
1450 },
1451
9ff86fb7
SR		 1452 pointerEvent: function (sock, x, y, mask) {
1453 var buff = sock._sQ;
1454 var offset = sock._sQlen;
1455
1456 buff[offset] = 5; // msg-type
1457
1458 buff[offset + 1] = mask;
1459
1460 buff[offset + 2] = x >> 8;
1461 buff[offset + 3] = x;
1462
1463 buff[offset + 4] = y >> 8;
1464 buff[offset + 5] = y;
1465
1466 sock._sQlen += 6;
89d2837f 1467 sock.flush();
b1dee947
SR		 1468 },
1469
1470 // TODO(directxman12): make this unicode compatible?
9ff86fb7
SR		 1471 clientCutText: function (sock, text) {
1472 var buff = sock._sQ;
1473 var offset = sock._sQlen;
1474
1475 buff[offset] = 6; // msg-type
1476
1477 buff[offset + 1] = 0; // padding
1478 buff[offset + 2] = 0; // padding
1479 buff[offset + 3] = 0; // padding
1480
b1dee947 1481 var n = text.length;
9ff86fb7
SR		 1482
1483 buff[offset + 4] = n >> 24;
1484 buff[offset + 5] = n >> 16;
1485 buff[offset + 6] = n >> 8;
1486 buff[offset + 7] = n;
1487
b1dee947 1488 for (var i = 0; i < n; i++) {
9ff86fb7 1489 buff[offset + 8 + i] = text.charCodeAt(i);
b1dee947 1490 }
a7a89626 1491
9ff86fb7 1492 sock._sQlen += 8 + n;
89d2837f 1493 sock.flush();
b1dee947
SR		 1494 },
1495
ae116051
S		 1496 setDesktopSize: function (sock, width, height, id, flags) {
1497 var buff = sock._sQ;
1498 var offset = sock._sQlen;
1499
1500 buff[offset] = 251; // msg-type
1501 buff[offset + 1] = 0; // padding
1502 buff[offset + 2] = width >> 8; // width
1503 buff[offset + 3] = width;
1504 buff[offset + 4] = height >> 8; // height
1505 buff[offset + 5] = height;
1506
1507 buff[offset + 6] = 1; // number-of-screens
1508 buff[offset + 7] = 0; // padding
1509
1510 // screen array
1511 buff[offset + 8] = id >> 24; // id
1512 buff[offset + 9] = id >> 16;
1513 buff[offset + 10] = id >> 8;
1514 buff[offset + 11] = id;
1515 buff[offset + 12] = 0; // x-position
1516 buff[offset + 13] = 0;
1517 buff[offset + 14] = 0; // y-position
1518 buff[offset + 15] = 0;
1519 buff[offset + 16] = width >> 8; // width
1520 buff[offset + 17] = width;
1521 buff[offset + 18] = height >> 8; // height
1522 buff[offset + 19] = height;
1523 buff[offset + 20] = flags >> 24; // flags
1524 buff[offset + 21] = flags >> 16;
1525 buff[offset + 22] = flags >> 8;
1526 buff[offset + 23] = flags;
1527
1528 sock._sQlen += 24;
89d2837f 1529 sock.flush();
ae116051
S		 1530 },
1531
3df13262 1532 clientFence: function (sock, flags, payload) {
1533 var buff = sock._sQ;
1534 var offset = sock._sQlen;
1535
1536 buff[offset] = 248; // msg-type
1537
1538 buff[offset + 1] = 0; // padding
1539 buff[offset + 2] = 0; // padding
1540 buff[offset + 3] = 0; // padding
1541
1542 buff[offset + 4] = flags >> 24; // flags
1543 buff[offset + 5] = flags >> 16;
1544 buff[offset + 6] = flags >> 8;
1545 buff[offset + 7] = flags;
1546
1547 var n = payload.length;
1548
1549 buff[offset + 8] = n; // length
1550
1551 for (var i = 0; i < n; i++) {
1552 buff[offset + 9 + i] = payload.charCodeAt(i);
1553 }
1554
1555 sock._sQlen += 9 + n;
1556 sock.flush();
1557 },
1558
76a86ff5 1559 enableContinuousUpdates: function (sock, enable, x, y, width, height) {
1560 var buff = sock._sQ;
1561 var offset = sock._sQlen;
1562
1563 buff[offset] = 150; // msg-type
1564 buff[offset + 1] = enable; // enable-flag
1565
1566 buff[offset + 2] = x >> 8; // x
1567 buff[offset + 3] = x;
1568 buff[offset + 4] = y >> 8; // y
1569 buff[offset + 5] = y;
1570 buff[offset + 6] = width >> 8; // width
1571 buff[offset + 7] = width;
1572 buff[offset + 8] = height >> 8; // height
1573 buff[offset + 9] = height;
1574
1575 sock._sQlen += 10;
1576 sock.flush();
ae116051
S		 1577 },
1578
9ff86fb7
SR		 1579 pixelFormat: function (sock, bpp, depth, true_color) {
1580 var buff = sock._sQ;
1581 var offset = sock._sQlen;
1582
1583 buff[offset] = 0; // msg-type
1584
1585 buff[offset + 1] = 0; // padding
1586 buff[offset + 2] = 0; // padding
1587 buff[offset + 3] = 0; // padding
1588
1589 buff[offset + 4] = bpp * 8; // bits-per-pixel
1590 buff[offset + 5] = depth * 8; // depth
1591 buff[offset + 6] = 0; // little-endian
1592 buff[offset + 7] = true_color ? 1 : 0; // true-color
1593
1594 buff[offset + 8] = 0; // red-max
1595 buff[offset + 9] = 255; // red-max
1596
1597 buff[offset + 10] = 0; // green-max
1598 buff[offset + 11] = 255; // green-max
1599
1600 buff[offset + 12] = 0; // blue-max
1601 buff[offset + 13] = 255; // blue-max
1602
1603 buff[offset + 14] = 16; // red-shift
1604 buff[offset + 15] = 8; // green-shift
1605 buff[offset + 16] = 0; // blue-shift
1606
1607 buff[offset + 17] = 0; // padding
1608 buff[offset + 18] = 0; // padding
1609 buff[offset + 19] = 0; // padding
1610
1611 sock._sQlen += 20;
89d2837f 1612 sock.flush();
b1dee947
SR		 1613 },
1614
9ff86fb7
SR		 1615 clientEncodings: function (sock, encodings, local_cursor, true_color) {
1616 var buff = sock._sQ;
1617 var offset = sock._sQlen;
b1dee947 1618
9ff86fb7
SR		 1619 buff[offset] = 2; // msg-type
1620 buff[offset + 1] = 0; // padding
1621
1622 // offset + 2 and offset + 3 are encoding count
1623
1624 var i, j = offset + 4, cnt = 0;
b1dee947
SR		 1625 for (i = 0; i < encodings.length; i++) {
1626 if (encodings[i][0] === "Cursor" && !local_cursor) {
1627 Util.Debug("Skipping Cursor pseudo-encoding");
1628 } else if (encodings[i][0] === "TIGHT" && !true_color) {
1629 // TODO: remove this when we have tight+non-true-color
1630 Util.Warn("Skipping tight as it is only supported with true color");
1631 } else {
9ff86fb7
SR		 1632 var enc = encodings[i][1];
1633 buff[j] = enc >> 24;
1634 buff[j + 1] = enc >> 16;
1635 buff[j + 2] = enc >> 8;
1636 buff[j + 3] = enc;
1637
1638 j += 4;
1639 cnt++;
b1dee947
SR		 1640 }
1641 }
a7a89626 1642
9ff86fb7
SR		 1643 buff[offset + 2] = cnt >> 8;
1644 buff[offset + 3] = cnt;
a7a89626 1645
9ff86fb7 1646 sock._sQlen += j - offset;
89d2837f 1647 sock.flush();
b1dee947 1648 },
a679a97d 1649
76a86ff5 1650 fbUpdateRequests: function (sock, onlyNonInc, cleanDirty, fb_width, fb_height) {
9ff86fb7 1651 var offsetIncrement = 0;
b1dee947
SR		 1652
1653 var cb = cleanDirty.cleanBox;
1654 var w, h;
76a86ff5 1655 if (!onlyNonInc && (cb.w > 0 && cb.h > 0)) {
b1dee947
SR		 1656 w = typeof cb.w === "undefined" ? fb_width : cb.w;
1657 h = typeof cb.h === "undefined" ? fb_height : cb.h;
1658 // Request incremental for clean box
9ff86fb7 1659 RFB.messages.fbUpdateRequest(sock, 1, cb.x, cb.y, w, h);
a7a89626 1660 }
b1dee947
SR		 1661
1662 for (var i = 0; i < cleanDirty.dirtyBoxes.length; i++) {
1663 var db = cleanDirty.dirtyBoxes[i];
1664 // Force all (non-incremental) for dirty box
1665 w = typeof db.w === "undefined" ? fb_width : db.w;
1666 h = typeof db.h === "undefined" ? fb_height : db.h;
9ff86fb7 1667 RFB.messages.fbUpdateRequest(sock, 0, db.x, db.y, w, h);
b1dee947 1668 }
b1dee947
SR		 1669 },
1670
9ff86fb7
SR		 1671 fbUpdateRequest: function (sock, incremental, x, y, w, h) {
1672 var buff = sock._sQ;
1673 var offset = sock._sQlen;
1674
b1dee947
SR		 1675 if (typeof(x) === "undefined") { x = 0; }
1676 if (typeof(y) === "undefined") { y = 0; }
1677
9ff86fb7
SR		 1678 buff[offset] = 3; // msg-type
1679 buff[offset + 1] = incremental;
1680
1681 buff[offset + 2] = (x >> 8) & 0xFF;
1682 buff[offset + 3] = x & 0xFF;
1683
1684 buff[offset + 4] = (y >> 8) & 0xFF;
1685 buff[offset + 5] = y & 0xFF;
1686
1687 buff[offset + 6] = (w >> 8) & 0xFF;
1688 buff[offset + 7] = w & 0xFF;
1689
1690 buff[offset + 8] = (h >> 8) & 0xFF;
1691 buff[offset + 9] = h & 0xFF;
b1dee947 1692
9ff86fb7 1693 sock._sQlen += 10;
89d2837f 1694 sock.flush();
a7a89626 1695 }
b1dee947
SR		 1696 };
1697
1698 RFB.genDES = function (password, challenge) {
1699 var passwd = [];
1700 for (var i = 0; i < password.length; i++) {
1701 passwd.push(password.charCodeAt(i));
a7a89626 1702 }
b1dee947
SR		 1703 return (new DES(passwd)).encrypt(challenge);
1704 };
1705
1706 RFB.extract_data_uri = function (arr) {
1707 return ";base64," + Base64.encode(arr);
1708 };
1709
1710 RFB.encodingHandlers = {
1711 RAW: function () {
1712 if (this._FBU.lines === 0) {
1713 this._FBU.lines = this._FBU.height;
a7a89626 1714 }
a7a89626 1715
b1dee947
SR		 1716 this._FBU.bytes = this._FBU.width * this._fb_Bpp; // at least a line
1717 if (this._sock.rQwait("RAW", this._FBU.bytes)) { return false; }
1718 var cur_y = this._FBU.y + (this._FBU.height - this._FBU.lines);
1719 var curr_height = Math.min(this._FBU.lines,
1720 Math.floor(this._sock.rQlen() / (this._FBU.width * this._fb_Bpp)));
1721 this._display.blitImage(this._FBU.x, cur_y, this._FBU.width,
1722 curr_height, this._sock.get_rQ(),
1723 this._sock.get_rQi());
1724 this._sock.rQskipBytes(this._FBU.width * curr_height * this._fb_Bpp);
1725 this._FBU.lines -= curr_height;
1726
1727 if (this._FBU.lines > 0) {
1728 this._FBU.bytes = this._FBU.width * this._fb_Bpp; // At least another line
a7a89626 1729 } else {
b1dee947
SR		 1730 this._FBU.rects--;
1731 this._FBU.bytes = 0;
a7a89626 1732 }
b1dee947
SR		 1733
1734 return true;
1735 },
1736
1737 COPYRECT: function () {
1738 this._FBU.bytes = 4;
1739 if (this._sock.rQwait("COPYRECT", 4)) { return false; }
f00193e0
SR		 1740 this._display.copyImage(this._sock.rQshift16(), this._sock.rQshift16(),
1741 this._FBU.x, this._FBU.y, this._FBU.width,
1742 this._FBU.height);
1743
b1dee947
SR		 1744 this._FBU.rects--;
1745 this._FBU.bytes = 0;
1746 return true;
1747 },
1748
1749 RRE: function () {
1750 var color;
1751 if (this._FBU.subrects === 0) {
1752 this._FBU.bytes = 4 + this._fb_Bpp;
1753 if (this._sock.rQwait("RRE", 4 + this._fb_Bpp)) { return false; }
1754 this._FBU.subrects = this._sock.rQshift32();
1755 color = this._sock.rQshiftBytes(this._fb_Bpp); // Background
1756 this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, color);
1757 }
1758
1759 while (this._FBU.subrects > 0 && this._sock.rQlen() >= (this._fb_Bpp + 8)) {
1760 color = this._sock.rQshiftBytes(this._fb_Bpp);
1761 var x = this._sock.rQshift16();
1762 var y = this._sock.rQshift16();
1763 var width = this._sock.rQshift16();
1764 var height = this._sock.rQshift16();
1765 this._display.fillRect(this._FBU.x + x, this._FBU.y + y, width, height, color);
1766 this._FBU.subrects--;
1767 }
1768
1769 if (this._FBU.subrects > 0) {
1770 var chunk = Math.min(this._rre_chunk_sz, this._FBU.subrects);
1771 this._FBU.bytes = (this._fb_Bpp + 8) * chunk;
1772 } else {
1773 this._FBU.rects--;
1774 this._FBU.bytes = 0;
1775 }
1776
1777 return true;
1778 },
1779
1780 HEXTILE: function () {
1781 var rQ = this._sock.get_rQ();
1782 var rQi = this._sock.get_rQi();
1783
1784 if (this._FBU.tiles === 0) {
1785 this._FBU.tiles_x = Math.ceil(this._FBU.width / 16);
1786 this._FBU.tiles_y = Math.ceil(this._FBU.height / 16);
1787 this._FBU.total_tiles = this._FBU.tiles_x * this._FBU.tiles_y;
1788 this._FBU.tiles = this._FBU.total_tiles;
1789 }
1790
1791 while (this._FBU.tiles > 0) {
1792 this._FBU.bytes = 1;
1793 if (this._sock.rQwait("HEXTILE subencoding", this._FBU.bytes)) { return false; }
1794 var subencoding = rQ[rQi]; // Peek
1795 if (subencoding > 30) { // Raw
1796 this._fail("Disconnected: illegal hextile subencoding " + subencoding);
1797 return false;
1798 }
1799
1800 var subrects = 0;
1801 var curr_tile = this._FBU.total_tiles - this._FBU.tiles;
1802 var tile_x = curr_tile % this._FBU.tiles_x;
1803 var tile_y = Math.floor(curr_tile / this._FBU.tiles_x);
1804 var x = this._FBU.x + tile_x * 16;
1805 var y = this._FBU.y + tile_y * 16;
1806 var w = Math.min(16, (this._FBU.x + this._FBU.width) - x);
1807 var h = Math.min(16, (this._FBU.y + this._FBU.height) - y);
1808
1809 // Figure out how much we are expecting
1810 if (subencoding & 0x01) { // Raw
1811 this._FBU.bytes += w * h * this._fb_Bpp;
1812 } else {
1813 if (subencoding & 0x02) { // Background
1814 this._FBU.bytes += this._fb_Bpp;
1815 }
1816 if (subencoding & 0x04) { // Foreground
1817 this._FBU.bytes += this._fb_Bpp;
1818 }
1819 if (subencoding & 0x08) { // AnySubrects
1820 this._FBU.bytes++; // Since we aren't shifting it off
1821 if (this._sock.rQwait("hextile subrects header", this._FBU.bytes)) { return false; }
1822 subrects = rQ[rQi + this._FBU.bytes - 1]; // Peek
1823 if (subencoding & 0x10) { // SubrectsColoured
1824 this._FBU.bytes += subrects * (this._fb_Bpp + 2);
1825 } else {
1826 this._FBU.bytes += subrects * 2;
1827 }
1828 }
1829 }
1830
1831 if (this._sock.rQwait("hextile", this._FBU.bytes)) { return false; }
1832
1833 // We know the encoding and have a whole tile
1834 this._FBU.subencoding = rQ[rQi];
1835 rQi++;
1836 if (this._FBU.subencoding === 0) {
1837 if (this._FBU.lastsubencoding & 0x01) {
1838 // Weird: ignore blanks are RAW
1839 Util.Debug(" Ignoring blank after RAW");
a7a89626 1840 } else {
df89129f 1841 this._display.fillRect(x, y, w, h, this._FBU.background);
b1dee947
SR		 1842 }
1843 } else if (this._FBU.subencoding & 0x01) { // Raw
1844 this._display.blitImage(x, y, w, h, rQ, rQi);
1845 rQi += this._FBU.bytes - 1;
1846 } else {
1847 if (this._FBU.subencoding & 0x02) { // Background
38781d93
SR		 1848 if (this._fb_Bpp == 1) {
1849 this._FBU.background = rQ[rQi];
1850 } else {
1851 // fb_Bpp is 4
1852 this._FBU.background = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
1853 }
b1dee947 1854 rQi += this._fb_Bpp;
a7a89626 1855 }
b1dee947 1856 if (this._FBU.subencoding & 0x04) { // Foreground
38781d93
SR		 1857 if (this._fb_Bpp == 1) {
1858 this._FBU.foreground = rQ[rQi];
1859 } else {
1860 // this._fb_Bpp is 4
1861 this._FBU.foreground = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
1862 }
b1dee947
SR		 1863 rQi += this._fb_Bpp;
1864 }
1865
1866 this._display.startTile(x, y, w, h, this._FBU.background);
1867 if (this._FBU.subencoding & 0x08) { // AnySubrects
1868 subrects = rQ[rQi];
1869 rQi++;
1870
1871 for (var s = 0; s < subrects; s++) {
1872 var color;
1873 if (this._FBU.subencoding & 0x10) { // SubrectsColoured
38781d93
SR		 1874 if (this._fb_Bpp === 1) {
1875 color = rQ[rQi];
1876 } else {
1877 // _fb_Bpp is 4
1878 color = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
1879 }
b1dee947
SR		 1880 rQi += this._fb_Bpp;
1881 } else {
1882 color = this._FBU.foreground;
1883 }
1884 var xy = rQ[rQi];
1885 rQi++;
1886 var sx = (xy >> 4);
1887 var sy = (xy & 0x0f);
a7a89626 1888
b1dee947
SR		 1889 var wh = rQ[rQi];
1890 rQi++;
1891 var sw = (wh >> 4) + 1;
1892 var sh = (wh & 0x0f) + 1;
a7a89626 1893
b1dee947
SR		 1894 this._display.subTile(sx, sy, sw, sh, color);
1895 }
1896 }
1897 this._display.finishTile();
a7a89626 1898 }
b1dee947
SR		 1899 this._sock.set_rQi(rQi);
1900 this._FBU.lastsubencoding = this._FBU.subencoding;
1901 this._FBU.bytes = 0;
1902 this._FBU.tiles--;
a7a89626 1903 }
d065cad9 1904
b1dee947
SR		 1905 if (this._FBU.tiles === 0) {
1906 this._FBU.rects--;
1907 }
1908
1909 return true;
1910 },
1911
1912 getTightCLength: function (arr) {
1913 var header = 1, data = 0;
1914 data += arr[0] & 0x7f;
1915 if (arr[0] & 0x80) {
1916 header++;
1917 data += (arr[1] & 0x7f) << 7;
1918 if (arr[1] & 0x80) {
1919 header++;
1920 data += arr[2] << 14;
1921 }
1922 }
1923 return [header, data];
1924 },
1925
1926 display_tight: function (isTightPNG) {
1927 if (this._fb_depth === 1) {
1928 this._fail("Tight protocol handler only implements true color mode");
1929 }
9b75bcaa 1930
b1dee947
SR		 1931 this._FBU.bytes = 1; // compression-control byte
1932 if (this._sock.rQwait("TIGHT compression-control", this._FBU.bytes)) { return false; }
9b75bcaa 1933
b1dee947
SR		 1934 var checksum = function (data) {
1935 var sum = 0;
1936 for (var i = 0; i < data.length; i++) {
1937 sum += data[i];
1938 if (sum > 65536) sum -= 65536;
1939 }
1940 return sum;
1941 };
1942
1943 var resetStreams = 0;
1944 var streamId = -1;
c802d931 1945 var decompress = function (data, expected) {
b1dee947
SR		 1946 for (var i = 0; i < 4; i++) {
1947 if ((resetStreams >> i) & 1) {
1948 this._FBU.zlibs[i].reset();
1949 Util.Info("Reset zlib stream " + i);
1950 }
1951 }
de84e098 1952
6940936f 1953 //var uncompressed = this._FBU.zlibs[streamId].uncompress(data, 0);
c802d931 1954 var uncompressed = this._FBU.zlibs[streamId].inflate(data, true, expected);
6940936f 1955 /*if (uncompressed.status !== 0) {
b1dee947 1956 Util.Error("Invalid data in zlib stream");
6940936f 1957 }*/
de84e098 1958
6940936f
SR		 1959 //return uncompressed.data;
1960 return uncompressed;
b1dee947
SR		 1961 }.bind(this);
1962
d1800d09 1963 var indexedToRGBX2Color = function (data, palette, width, height) {
b1dee947
SR		 1964 // Convert indexed (palette based) image data to RGB
1965 // TODO: reduce number of calculations inside loop
d1800d09
SR		 1966 var dest = this._destBuff;
1967 var w = Math.floor((width + 7) / 8);
1968 var w1 = Math.floor(width / 8);
1969
1970 /*for (var y = 0; y < height; y++) {
1971 var b, x, dp, sp;
1972 var yoffset = y * width;
1973 var ybitoffset = y * w;
1974 var xoffset, targetbyte;
1975 for (x = 0; x < w1; x++) {
1976 xoffset = yoffset + x * 8;
1977 targetbyte = data[ybitoffset + x];
1978 for (b = 7; b >= 0; b--) {
1979 dp = (xoffset + 7 - b) * 3;
1980 sp = (targetbyte >> b & 1) * 3;
1981 dest[dp] = palette[sp];
1982 dest[dp + 1] = palette[sp + 1];
1983 dest[dp + 2] = palette[sp + 2];
b1dee947 1984 }
d1800d09 1985 }
d065cad9 1986
d1800d09
SR		 1987 xoffset = yoffset + x * 8;
1988 targetbyte = data[ybitoffset + x];
1989 for (b = 7; b >= 8 - width % 8; b--) {
1990 dp = (xoffset + 7 - b) * 3;
1991 sp = (targetbyte >> b & 1) * 3;
1992 dest[dp] = palette[sp];
1993 dest[dp + 1] = palette[sp + 1];
1994 dest[dp + 2] = palette[sp + 2];
1995 }
1996 }*/
1997
1998 for (var y = 0; y < height; y++) {
1999 var b, x, dp, sp;
2000 for (x = 0; x < w1; x++) {
2001 for (b = 7; b >= 0; b--) {
2002 dp = (y * width + x * 8 + 7 - b) * 4;
b1dee947
SR		 2003 sp = (data[y * w + x] >> b & 1) * 3;
2004 dest[dp] = palette[sp];
2005 dest[dp + 1] = palette[sp + 1];
2006 dest[dp + 2] = palette[sp + 2];
d1800d09 2007 dest[dp + 3] = 255;
b1dee947
SR		 2008 }
2009 }
d1800d09
SR		 2010
2011 for (b = 7; b >= 8 - width % 8; b--) {
2012 dp = (y * width + x * 8 + 7 - b) * 4;
2013 sp = (data[y * w + x] >> b & 1) * 3;
2014 dest[dp] = palette[sp];
2015 dest[dp + 1] = palette[sp + 1];
2016 dest[dp + 2] = palette[sp + 2];
2017 dest[dp + 3] = 255;
e16ad2fd
JM		 2018 }
2019 }
b1dee947
SR		 2020
2021 return dest;
2022 }.bind(this);
2023
d1800d09
SR		 2024 var indexedToRGBX = function (data, palette, width, height) {
2025 // Convert indexed (palette based) image data to RGB
2026 var dest = this._destBuff;
2027 var total = width * height * 4;
2028 for (var i = 0, j = 0; i < total; i += 4, j++) {
2029 var sp = data[j] * 3;
2030 dest[i] = palette[sp];
2031 dest[i + 1] = palette[sp + 1];
2032 dest[i + 2] = palette[sp + 2];
2033 dest[i + 3] = 255;
2034 }
2035
2036 return dest;
2037 }.bind(this);
2038
b1dee947 2039 var rQi = this._sock.get_rQi();
89bdc8ce 2040 var rQ = this._sock.rQwhole();
d1800d09
SR		 2041 var cmode, data;
2042 var cl_header, cl_data;
b1dee947
SR		 2043
2044 var handlePalette = function () {
2045 var numColors = rQ[rQi + 2] + 1;
2046 var paletteSize = numColors * this._fb_depth;
2047 this._FBU.bytes += paletteSize;
2048 if (this._sock.rQwait("TIGHT palette " + cmode, this._FBU.bytes)) { return false; }
2049
2050 var bpp = (numColors <= 2) ? 1 : 8;
2051 var rowSize = Math.floor((this._FBU.width * bpp + 7) / 8);
2052 var raw = false;
2053 if (rowSize * this._FBU.height < 12) {
2054 raw = true;
d1800d09
SR		 2055 cl_header = 0;
2056 cl_data = rowSize * this._FBU.height;
2057 //clength = [0, rowSize * this._FBU.height];
b1dee947 2058 } else {
d1800d09
SR		 2059 // begin inline getTightCLength (returning two-item arrays is bad for performance with GC)
2060 var cl_offset = rQi + 3 + paletteSize;
2061 cl_header = 1;
2062 cl_data = 0;
2063 cl_data += rQ[cl_offset] & 0x7f;
2064 if (rQ[cl_offset] & 0x80) {
2065 cl_header++;
2066 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
2067 if (rQ[cl_offset + 1] & 0x80) {
2068 cl_header++;
2069 cl_data += rQ[cl_offset + 2] << 14;
2070 }
2071 }
2072 // end inline getTightCLength
e16ad2fd 2073 }
b1dee947 2074
d1800d09 2075 this._FBU.bytes += cl_header + cl_data;
b1dee947
SR		 2076 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
2077
2078 // Shift ctl, filter id, num colors, palette entries, and clength off
2079 this._sock.rQskipBytes(3);
d1800d09
SR		 2080 //var palette = this._sock.rQshiftBytes(paletteSize);
2081 this._sock.rQshiftTo(this._paletteBuff, paletteSize);
2082 this._sock.rQskipBytes(cl_header);
b1dee947
SR		 2083
2084 if (raw) {
d1800d09 2085 data = this._sock.rQshiftBytes(cl_data);
b1dee947 2086 } else {
c802d931 2087 data = decompress(this._sock.rQshiftBytes(cl_data), rowSize * this._FBU.height);
b1dee947
SR		 2088 }
2089
2090 // Convert indexed (palette based) image data to RGB
d1800d09
SR		 2091 var rgbx;
2092 if (numColors == 2) {
2093 rgbx = indexedToRGBX2Color(data, this._paletteBuff, this._FBU.width, this._FBU.height);
f00193e0 2094 this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false);
d1800d09
SR		 2095 } else {
2096 rgbx = indexedToRGBX(data, this._paletteBuff, this._FBU.width, this._FBU.height);
f00193e0 2097 this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false);
d1800d09 2098 }
b1dee947 2099
b1dee947
SR		 2100
2101 return true;
2102 }.bind(this);
2103
2104 var handleCopy = function () {
2105 var raw = false;
2106 var uncompressedSize = this._FBU.width * this._FBU.height * this._fb_depth;
2107 if (uncompressedSize < 12) {
2108 raw = true;
d1800d09
SR		 2109 cl_header = 0;
2110 cl_data = uncompressedSize;
b1dee947 2111 } else {
d1800d09
SR		 2112 // begin inline getTightCLength (returning two-item arrays is for peformance with GC)
2113 var cl_offset = rQi + 1;
2114 cl_header = 1;
2115 cl_data = 0;
2116 cl_data += rQ[cl_offset] & 0x7f;
2117 if (rQ[cl_offset] & 0x80) {
2118 cl_header++;
2119 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
2120 if (rQ[cl_offset + 1] & 0x80) {
2121 cl_header++;
2122 cl_data += rQ[cl_offset + 2] << 14;
2123 }
2124 }
2125 // end inline getTightCLength
b1dee947 2126 }
d1800d09 2127 this._FBU.bytes = 1 + cl_header + cl_data;
b1dee947
SR		 2128 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
2129
2130 // Shift ctl, clength off
d1800d09 2131 this._sock.rQshiftBytes(1 + cl_header);
b1dee947
SR		 2132
2133 if (raw) {
d1800d09 2134 data = this._sock.rQshiftBytes(cl_data);
b1dee947 2135 } else {
c802d931 2136 data = decompress(this._sock.rQshiftBytes(cl_data), uncompressedSize);
e16ad2fd 2137 }
b1dee947 2138
f00193e0 2139 this._display.blitRgbImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, data, 0, false);
b1dee947
SR		 2140
2141 return true;
2142 }.bind(this);
2143
2144 var ctl = this._sock.rQpeek8();
2145
2146 // Keep tight reset bits
2147 resetStreams = ctl & 0xF;
2148
2149 // Figure out filter
2150 ctl = ctl >> 4;
2151 streamId = ctl & 0x3;
2152
2153 if (ctl === 0x08) cmode = "fill";
2154 else if (ctl === 0x09) cmode = "jpeg";
2155 else if (ctl === 0x0A) cmode = "png";
2156 else if (ctl & 0x04) cmode = "filter";
2157 else if (ctl < 0x04) cmode = "copy";
2158 else return this._fail("Illegal tight compression received, ctl: " + ctl);
2159
2160 if (isTightPNG && (cmode === "filter" || cmode === "copy")) {
2161 return this._fail("filter/copy received in tightPNG mode");
e16ad2fd 2162 }
de84e098 2163
b1dee947
SR		 2164 switch (cmode) {
2165 // fill use fb_depth because TPIXELs drop the padding byte
2166 case "fill": // TPIXEL
2167 this._FBU.bytes += this._fb_depth;
2168 break;
2169 case "jpeg": // max clength
2170 this._FBU.bytes += 3;
2171 break;
2172 case "png": // max clength
2173 this._FBU.bytes += 3;
2174 break;
2175 case "filter": // filter id + num colors if palette
2176 this._FBU.bytes += 2;
2177 break;
2178 case "copy":
2179 break;
2180 }
d065cad9 2181
b1dee947
SR		 2182 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
2183
2184 // Determine FBU.bytes
2185 switch (cmode) {
2186 case "fill":
f00193e0
SR		 2187 // skip ctl byte
2188 this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, [rQ[rQi + 3], rQ[rQi + 2], rQ[rQi + 1]], false);
2189 this._sock.rQskipBytes(4);
b1dee947
SR		 2190 break;
2191 case "png":
2192 case "jpeg":
d1800d09
SR		 2193 // begin inline getTightCLength (returning two-item arrays is for peformance with GC)
2194 var cl_offset = rQi + 1;
2195 cl_header = 1;
2196 cl_data = 0;
2197 cl_data += rQ[cl_offset] & 0x7f;
2198 if (rQ[cl_offset] & 0x80) {
2199 cl_header++;
2200 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
2201 if (rQ[cl_offset + 1] & 0x80) {
2202 cl_header++;
2203 cl_data += rQ[cl_offset + 2] << 14;
2204 }
2205 }
2206 // end inline getTightCLength
2207 this._FBU.bytes = 1 + cl_header + cl_data; // ctl + clength size + jpeg-data
b1dee947
SR		 2208 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
2209
2210 // We have everything, render it
d1800d09 2211 this._sock.rQskipBytes(1 + cl_header); // shift off clt + compact length
b1dee947
SR		 2212 var img = new Image();
2213 img.src = "data: image/" + cmode +
d1800d09 2214 RFB.extract_data_uri(this._sock.rQshiftBytes(cl_data));
b1dee947
SR		 2215 this._display.renderQ_push({
2216 'type': 'img',
2217 'img': img,
2218 'x': this._FBU.x,
2219 'y': this._FBU.y
2220 });
2221 img = null;
2222 break;
2223 case "filter":
2224 var filterId = rQ[rQi + 1];
2225 if (filterId === 1) {
2226 if (!handlePalette()) { return false; }
2227 } else {
2228 // Filter 0, Copy could be valid here, but servers don't send it as an explicit filter
2229 // Filter 2, Gradient is valid but not use if jpeg is enabled
b2cdd558 2230 this._fail("Unsupported tight subencoding received, filter: " + filterId);
b1dee947
SR		 2231 }
2232 break;
2233 case "copy":
2234 if (!handleCopy()) { return false; }
2235 break;
2236 }
5ca5e2d8 2237
de84e098 2238
b1dee947
SR		 2239 this._FBU.bytes = 0;
2240 this._FBU.rects--;
c514fd5e 2241
b1dee947
SR		 2242 return true;
2243 },
de84e098 2244
b1dee947
SR		 2245 TIGHT: function () { return this._encHandlers.display_tight(false); },
2246 TIGHT_PNG: function () { return this._encHandlers.display_tight(true); },
a7a89626 2247
b1dee947
SR		 2248 last_rect: function () {
2249 this._FBU.rects = 0;
2250 return true;
2251 },
a7a89626 2252
798340b9 2253 handle_FB_resize: function () {
2254 this._fb_width = this._FBU.width;
2255 this._fb_height = this._FBU.height;
d1800d09 2256 this._destBuff = new Uint8Array(this._fb_width * this._fb_height * 4);
798340b9 2257 this._display.resize(this._fb_width, this._fb_height);
2258 this._onFBResize(this, this._fb_width, this._fb_height);
2259 this._timing.fbu_rt_start = (new Date()).getTime();
76a86ff5 2260 this._updateContinuousUpdates();
798340b9 2261
2262 this._FBU.bytes = 0;
2263 this._FBU.rects -= 1;
2264 return true;
2265 },
2266
2267 ExtendedDesktopSize: function () {
b0ec6509 2268 this._FBU.bytes = 1;
798340b9 2269 if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; }
b0ec6509 2270
2271 this._supportsSetDesktopSize = true;
2272 var number_of_screens = this._sock.rQpeek8();
2273
2274 this._FBU.bytes = 4 + (number_of_screens * 16);
798340b9 2275 if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; }
b0ec6509 2276
2277 this._sock.rQskipBytes(1); // number-of-screens
2278 this._sock.rQskipBytes(3); // padding
2279
0442e153 2280 for (var i = 0; i < number_of_screens; i += 1) {
b0ec6509 2281 // Save the id and flags of the first screen
0442e153 2282 if (i === 0) {
b0ec6509 2283 this._screen_id = this._sock.rQshiftBytes(4); // id
2284 this._sock.rQskipBytes(2); // x-position
2285 this._sock.rQskipBytes(2); // y-position
2286 this._sock.rQskipBytes(2); // width
2287 this._sock.rQskipBytes(2); // height
2288 this._screen_flags = this._sock.rQshiftBytes(4); // flags
2289 } else {
2290 this._sock.rQskipBytes(16);
2291 }
2292 }
2293
798340b9 2294 /*
2295 * The x-position indicates the reason for the change:
2296 *
2297 * 0 - server resized on its own
2298 * 1 - this client requested the resize
2299 * 2 - another client requested the resize
2300 */
b0ec6509 2301
798340b9 2302 // We need to handle errors when we requested the resize.
0442e153 2303 if (this._FBU.x === 1 && this._FBU.y !== 0) {
798340b9 2304 var msg = "";
2305 // The y-position indicates the status code from the server
2306 switch (this._FBU.y) {
2307 case 1:
2308 msg = "Resize is administratively prohibited";
2309 break;
2310 case 2:
2311 msg = "Out of resources";
2312 break;
2313 case 3:
2314 msg = "Invalid screen layout";
2315 break;
2316 default:
2317 msg = "Unknown reason";
2318 break;
2319 }
a7127fee
SM		 2320 this._notification("Server did not accept the resize request: "
2321 + msg, 'normal');
798340b9 2322 return true;
2323 }
b0ec6509 2324
798340b9 2325 this._encHandlers.handle_FB_resize();
b0ec6509 2326 return true;
2327 },
2328
b1dee947 2329 DesktopSize: function () {
798340b9 2330 this._encHandlers.handle_FB_resize();
b1dee947
SR		 2331 return true;
2332 },
2333
2334 Cursor: function () {
2335 Util.Debug(">> set_cursor");
2336 var x = this._FBU.x; // hotspot-x
2337 var y = this._FBU.y; // hotspot-y
2338 var w = this._FBU.width;
2339 var h = this._FBU.height;
2340
2341 var pixelslength = w * h * this._fb_Bpp;
2342 var masklength = Math.floor((w + 7) / 8) * h;
8db09746 2343
b1dee947
SR		 2344 this._FBU.bytes = pixelslength + masklength;
2345 if (this._sock.rQwait("cursor encoding", this._FBU.bytes)) { return false; }
8db09746 2346
b1dee947
SR		 2347 this._display.changeCursor(this._sock.rQshiftBytes(pixelslength),
2348 this._sock.rQshiftBytes(masklength),
2349 x, y, w, h);
a7a89626 2350
b1dee947
SR		 2351 this._FBU.bytes = 0;
2352 this._FBU.rects--;
2353
2354 Util.Debug("<< set_cursor");
2355 return true;
2356 },
2357
8f06673a
DHB		 2358 QEMUExtendedKeyEvent: function () {
2359 this._FBU.rects--;
2360
2361 var keyboardEvent = document.createEvent("keyboardEvent");
2362 if (keyboardEvent.code !== undefined) {
2363 this._qemuExtKeyEventSupported = true;
2364 this._keyboard.setQEMUVNCKeyboardHandler();
2365 }
25e4928f
SM		 2366 },
2367
2368 JPEG_quality_lo: function () {
2369 Util.Error("Server sent jpeg_quality pseudo-encoding");
2370 },
2371
2372 compress_lo: function () {
2373 Util.Error("Server sent compress level pseudo-encoding");
058be785 2374 }
b1dee947
SR		 2375 };
2376})();
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