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1 | /* | |
2 | * noVNC: HTML5 VNC client | |
3 | * Copyright (C) 2012 Joel Martin | |
4 | * Copyright (C) 2016 Samuel Mannehed for Cendio AB | |
5 | * Licensed under MPL 2.0 (see LICENSE.txt) | |
6 | * | |
7 | * See README.md for usage and integration instructions. | |
8 | * | |
9 | * TIGHT decoder portion: | |
10 | * (c) 2012 Michael Tinglof, Joe Balaz, Les Piech (Mercuri.ca) | |
11 | */ | |
12 | ||
13 | import * as Log from './util/logging.js'; | |
14 | import _ from './util/localization.js'; | |
15 | import { decodeUTF8 } from './util/strings.js'; | |
16 | import { set_defaults, make_properties } from './util/properties.js'; | |
17 | import Display from "./display.js"; | |
18 | import Keyboard from "./input/keyboard.js"; | |
19 | import Mouse from "./input/mouse.js"; | |
20 | import Websock from "./websock.js"; | |
21 | import Base64 from "./base64.js"; | |
22 | import DES from "./des.js"; | |
23 | import KeyTable from "./input/keysym.js"; | |
24 | import XtScancode from "./input/xtscancodes.js"; | |
25 | import Inflator from "./inflator.js"; | |
26 | import { encodings, encodingName } from "./encodings.js"; | |
27 | ||
28 | /*jslint white: false, browser: true */ | |
29 | /*global window, Util, Display, Keyboard, Mouse, Websock, Websock_native, Base64, DES, KeyTable, Inflator, XtScancode */ | |
30 | ||
31 | export default function RFB(defaults) { | |
32 | "use strict"; | |
33 | if (!defaults) { | |
34 | defaults = {}; | |
35 | } | |
36 | ||
37 | // Connection details | |
38 | this._url = ''; | |
39 | this._rfb_credentials = {}; | |
40 | ||
41 | // Internal state | |
42 | this._rfb_connection_state = ''; | |
43 | this._rfb_init_state = ''; | |
44 | this._rfb_auth_scheme = ''; | |
45 | this._rfb_disconnect_reason = ""; | |
46 | ||
47 | // Server capabilities | |
48 | this._rfb_version = 0; | |
49 | this._rfb_max_version = 3.8; | |
50 | this._rfb_tightvnc = false; | |
51 | this._rfb_xvp_ver = 0; | |
52 | ||
53 | this._fb_width = 0; | |
54 | this._fb_height = 0; | |
55 | ||
56 | this._fb_name = ""; | |
57 | ||
58 | this._capabilities = { power: false, resize: false }; | |
59 | ||
60 | this._supportsFence = false; | |
61 | ||
62 | this._supportsContinuousUpdates = false; | |
63 | this._enabledContinuousUpdates = false; | |
64 | ||
65 | this._supportsSetDesktopSize = false; | |
66 | this._screen_id = 0; | |
67 | this._screen_flags = 0; | |
68 | ||
69 | this._qemuExtKeyEventSupported = false; | |
70 | ||
71 | // Internal objects | |
72 | this._sock = null; // Websock object | |
73 | this._display = null; // Display object | |
74 | this._flushing = false; // Display flushing state | |
75 | this._keyboard = null; // Keyboard input handler object | |
76 | this._mouse = null; // Mouse input handler object | |
77 | ||
78 | // Timers | |
79 | this._disconnTimer = null; // disconnection timer | |
80 | ||
81 | // Decoder states and stats | |
82 | this._encHandlers = {}; | |
83 | this._encStats = {}; | |
84 | ||
85 | this._FBU = { | |
86 | rects: 0, | |
87 | subrects: 0, // RRE and HEXTILE | |
88 | lines: 0, // RAW | |
89 | tiles: 0, // HEXTILE | |
90 | bytes: 0, | |
91 | x: 0, | |
92 | y: 0, | |
93 | width: 0, | |
94 | height: 0, | |
95 | encoding: 0, | |
96 | subencoding: -1, | |
97 | background: null, | |
98 | zlibs: [] // TIGHT zlib streams | |
99 | }; | |
100 | for (var i = 0; i < 4; i++) { | |
101 | this._FBU.zlibs[i] = new Inflator(); | |
102 | } | |
103 | ||
104 | this._destBuff = null; | |
105 | this._paletteBuff = new Uint8Array(1024); // 256 * 4 (max palette size * max bytes-per-pixel) | |
106 | ||
107 | this._rre_chunk_sz = 100; | |
108 | ||
109 | this._timing = { | |
110 | last_fbu: 0, | |
111 | fbu_total: 0, | |
112 | fbu_total_cnt: 0, | |
113 | full_fbu_total: 0, | |
114 | full_fbu_cnt: 0, | |
115 | ||
116 | fbu_rt_start: 0, | |
117 | fbu_rt_total: 0, | |
118 | fbu_rt_cnt: 0, | |
119 | pixels: 0 | |
120 | }; | |
121 | ||
122 | // Mouse state | |
123 | this._mouse_buttonMask = 0; | |
124 | this._mouse_arr = []; | |
125 | this._viewportDragging = false; | |
126 | this._viewportDragPos = {}; | |
127 | this._viewportHasMoved = false; | |
128 | ||
129 | // set the default value on user-facing properties | |
130 | set_defaults(this, defaults, { | |
131 | 'target': 'null', // VNC display rendering Canvas object | |
132 | 'local_cursor': false, // Request locally rendered cursor | |
133 | 'shared': true, // Request shared mode | |
134 | 'view_only': false, // Disable client mouse/keyboard | |
135 | 'disconnectTimeout': 3, // Time (s) to wait for disconnection | |
136 | 'wsProtocols': ['binary'], // Protocols to use in the WebSocket connection | |
137 | 'repeaterID': '', // [UltraVNC] RepeaterID to connect to | |
138 | 'viewportDrag': false, // Move the viewport on mouse drags | |
139 | ||
140 | // Callback functions | |
141 | 'onUpdateState': function () { }, // onUpdateState(rfb, state, oldstate): connection state change | |
142 | 'onNotification': function () { }, // onNotification(rfb, msg, level, options): notification for UI | |
143 | 'onDisconnected': function () { }, // onDisconnected(rfb, reason): disconnection finished | |
144 | 'onCredentialsRequired': function () { }, // onCredentialsRequired(rfb, types): VNC credentials are required | |
145 | 'onClipboard': function () { }, // onClipboard(rfb, text): RFB clipboard contents received | |
146 | 'onBell': function () { }, // onBell(rfb): RFB Bell message received | |
147 | 'onFBResize': function () { }, // onFBResize(rfb, width, height): frame buffer resized | |
148 | 'onDesktopName': function () { }, // onDesktopName(rfb, name): desktop name received | |
149 | 'onCapabilities': function () { } // onCapabilities(rfb, caps): the supported capabilities has changed | |
150 | }); | |
151 | ||
152 | // main setup | |
153 | Log.Debug(">> RFB.constructor"); | |
154 | ||
155 | // Target canvas must be able to have focus | |
156 | if (!this._target.hasAttribute('tabindex')) { | |
157 | this._target.tabIndex = -1; | |
158 | } | |
159 | ||
160 | // populate encHandlers with bound versions | |
161 | this._encHandlers[encodings.encodingRaw] = RFB.encodingHandlers.RAW.bind(this); | |
162 | this._encHandlers[encodings.encodingCopyRect] = RFB.encodingHandlers.COPYRECT.bind(this); | |
163 | this._encHandlers[encodings.encodingRRE] = RFB.encodingHandlers.RRE.bind(this); | |
164 | this._encHandlers[encodings.encodingHextile] = RFB.encodingHandlers.HEXTILE.bind(this); | |
165 | this._encHandlers[encodings.encodingTight] = RFB.encodingHandlers.TIGHT.bind(this); | |
166 | ||
167 | this._encHandlers[encodings.pseudoEncodingDesktopSize] = RFB.encodingHandlers.DesktopSize.bind(this); | |
168 | this._encHandlers[encodings.pseudoEncodingLastRect] = RFB.encodingHandlers.last_rect.bind(this); | |
169 | this._encHandlers[encodings.pseudoEncodingCursor] = RFB.encodingHandlers.Cursor.bind(this); | |
170 | this._encHandlers[encodings.pseudoEncodingQEMUExtendedKeyEvent] = RFB.encodingHandlers.QEMUExtendedKeyEvent.bind(this); | |
171 | this._encHandlers[encodings.pseudoEncodingExtendedDesktopSize] = RFB.encodingHandlers.ExtendedDesktopSize.bind(this); | |
172 | ||
173 | // NB: nothing that needs explicit teardown should be done | |
174 | // before this point, since this can throw an exception | |
175 | try { | |
176 | this._display = new Display({target: this._target, | |
177 | onFlush: this._onFlush.bind(this)}); | |
178 | } catch (exc) { | |
179 | Log.Error("Display exception: " + exc); | |
180 | throw exc; | |
181 | } | |
182 | this._display.clear(); | |
183 | ||
184 | this._keyboard = new Keyboard({target: this._target, | |
185 | onKeyEvent: this._handleKeyEvent.bind(this)}); | |
186 | ||
187 | this._mouse = new Mouse({target: this._target, | |
188 | onMouseButton: this._handleMouseButton.bind(this), | |
189 | onMouseMove: this._handleMouseMove.bind(this)}); | |
190 | ||
191 | this._sock = new Websock(); | |
192 | this._sock.on('message', this._handle_message.bind(this)); | |
193 | this._sock.on('open', function () { | |
194 | if ((this._rfb_connection_state === 'connecting') && | |
195 | (this._rfb_init_state === '')) { | |
196 | this._rfb_init_state = 'ProtocolVersion'; | |
197 | Log.Debug("Starting VNC handshake"); | |
198 | } else { | |
199 | this._fail("Unexpected server connection"); | |
200 | } | |
201 | }.bind(this)); | |
202 | this._sock.on('close', function (e) { | |
203 | Log.Warn("WebSocket on-close event"); | |
204 | var msg = ""; | |
205 | if (e.code) { | |
206 | msg = " (code: " + e.code; | |
207 | if (e.reason) { | |
208 | msg += ", reason: " + e.reason; | |
209 | } | |
210 | msg += ")"; | |
211 | } | |
212 | switch (this._rfb_connection_state) { | |
213 | case 'disconnecting': | |
214 | this._updateConnectionState('disconnected'); | |
215 | break; | |
216 | case 'connecting': | |
217 | this._fail('Failed to connect to server', msg); | |
218 | break; | |
219 | case 'connected': | |
220 | // Handle disconnects that were initiated server-side | |
221 | this._updateConnectionState('disconnecting'); | |
222 | this._updateConnectionState('disconnected'); | |
223 | break; | |
224 | case 'disconnected': | |
225 | this._fail("Unexpected server disconnect", | |
226 | "Already disconnected: " + msg); | |
227 | break; | |
228 | default: | |
229 | this._fail("Unexpected server disconnect", | |
230 | "Not in any state yet: " + msg); | |
231 | break; | |
232 | } | |
233 | this._sock.off('close'); | |
234 | }.bind(this)); | |
235 | this._sock.on('error', function (e) { | |
236 | Log.Warn("WebSocket on-error event"); | |
237 | }); | |
238 | ||
239 | var rmode = this._display.get_render_mode(); | |
240 | Log.Info("Using native WebSockets, render mode: " + rmode); | |
241 | ||
242 | Log.Debug("<< RFB.constructor"); | |
243 | }; | |
244 | ||
245 | RFB.prototype = { | |
246 | // Public methods | |
247 | connect: function (url, creds) { | |
248 | this._url = url; | |
249 | this._rfb_credentials = (creds !== undefined) ? creds : {}; | |
250 | ||
251 | if (!url) { | |
252 | this._fail(_("Must specify URL")); | |
253 | return; | |
254 | } | |
255 | ||
256 | this._rfb_init_state = ''; | |
257 | this._updateConnectionState('connecting'); | |
258 | return true; | |
259 | }, | |
260 | ||
261 | disconnect: function () { | |
262 | this._updateConnectionState('disconnecting'); | |
263 | this._sock.off('error'); | |
264 | this._sock.off('message'); | |
265 | this._sock.off('open'); | |
266 | }, | |
267 | ||
268 | sendCredentials: function (creds) { | |
269 | this._rfb_credentials = creds; | |
270 | setTimeout(this._init_msg.bind(this), 0); | |
271 | }, | |
272 | ||
273 | sendCtrlAltDel: function () { | |
274 | if (this._rfb_connection_state !== 'connected' || this._view_only) { return false; } | |
275 | Log.Info("Sending Ctrl-Alt-Del"); | |
276 | ||
277 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true); | |
278 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true); | |
279 | this.sendKey(KeyTable.XK_Delete, "Delete", true); | |
280 | this.sendKey(KeyTable.XK_Delete, "Delete", false); | |
281 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false); | |
282 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false); | |
283 | ||
284 | return true; | |
285 | }, | |
286 | ||
287 | machineShutdown: function () { | |
288 | this._xvpOp(1, 2); | |
289 | }, | |
290 | ||
291 | machineReboot: function () { | |
292 | this._xvpOp(1, 3); | |
293 | }, | |
294 | ||
295 | machineReset: function () { | |
296 | this._xvpOp(1, 4); | |
297 | }, | |
298 | ||
299 | // Send a key press. If 'down' is not specified then send a down key | |
300 | // followed by an up key. | |
301 | sendKey: function (keysym, code, down) { | |
302 | if (this._rfb_connection_state !== 'connected' || this._view_only) { return false; } | |
303 | ||
304 | if (down === undefined) { | |
305 | this.sendKey(keysym, code, true); | |
306 | this.sendKey(keysym, code, false); | |
307 | return true; | |
308 | } | |
309 | ||
310 | var scancode = XtScancode[code]; | |
311 | ||
312 | if (this._qemuExtKeyEventSupported && scancode) { | |
313 | // 0 is NoSymbol | |
314 | keysym = keysym || 0; | |
315 | ||
316 | Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode); | |
317 | ||
318 | RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode); | |
319 | } else { | |
320 | if (!keysym) { | |
321 | return false; | |
322 | } | |
323 | Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym); | |
324 | RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0); | |
325 | } | |
326 | ||
327 | return true; | |
328 | }, | |
329 | ||
330 | clipboardPasteFrom: function (text) { | |
331 | if (this._rfb_connection_state !== 'connected' || this._view_only) { return; } | |
332 | RFB.messages.clientCutText(this._sock, text); | |
333 | }, | |
334 | ||
335 | autoscale: function (width, height, downscaleOnly) { | |
336 | if (this._rfb_connection_state !== 'connected') { return; } | |
337 | this._display.autoscale(width, height, downscaleOnly); | |
338 | }, | |
339 | ||
340 | viewportChangeSize: function(width, height) { | |
341 | if (this._rfb_connection_state !== 'connected') { return; } | |
342 | this._display.viewportChangeSize(width, height); | |
343 | }, | |
344 | ||
345 | clippingDisplay: function () { | |
346 | if (this._rfb_connection_state !== 'connected') { return false; } | |
347 | return this._display.clippingDisplay(); | |
348 | }, | |
349 | ||
350 | // Requests a change of remote desktop size. This message is an extension | |
351 | // and may only be sent if we have received an ExtendedDesktopSize message | |
352 | requestDesktopSize: function (width, height) { | |
353 | if (this._rfb_connection_state !== 'connected' || | |
354 | this._view_only) { | |
355 | return false; | |
356 | } | |
357 | ||
358 | if (this._supportsSetDesktopSize) { | |
359 | RFB.messages.setDesktopSize(this._sock, width, height, | |
360 | this._screen_id, this._screen_flags); | |
361 | this._sock.flush(); | |
362 | return true; | |
363 | } else { | |
364 | return false; | |
365 | } | |
366 | }, | |
367 | ||
368 | ||
369 | // Private methods | |
370 | ||
371 | _connect: function () { | |
372 | Log.Debug(">> RFB.connect"); | |
373 | ||
374 | Log.Info("connecting to " + this._url); | |
375 | ||
376 | try { | |
377 | // WebSocket.onopen transitions to the RFB init states | |
378 | this._sock.open(this._url, this._wsProtocols); | |
379 | } catch (e) { | |
380 | if (e.name === 'SyntaxError') { | |
381 | this._fail("Invalid host or port value given", e); | |
382 | } else { | |
383 | this._fail("Error while connecting", e); | |
384 | } | |
385 | } | |
386 | ||
387 | // Always grab focus on some kind of click event | |
388 | this._target.addEventListener("mousedown", this._focusCanvas); | |
389 | this._target.addEventListener("touchstart", this._focusCanvas); | |
390 | ||
391 | Log.Debug("<< RFB.connect"); | |
392 | }, | |
393 | ||
394 | _disconnect: function () { | |
395 | Log.Debug(">> RFB.disconnect"); | |
396 | this._target.removeEventListener("mousedown", this._focusCanvas); | |
397 | this._target.removeEventListener("touchstart", this._focusCanvas); | |
398 | this._cleanup(); | |
399 | this._sock.close(); | |
400 | this._print_stats(); | |
401 | Log.Debug("<< RFB.disconnect"); | |
402 | }, | |
403 | ||
404 | _print_stats: function () { | |
405 | var stats = this._encStats; | |
406 | ||
407 | Log.Info("Encoding stats for this connection:"); | |
408 | Object.keys(stats).forEach(function (key) { | |
409 | var s = stats[key]; | |
410 | if (s[0] + s[1] > 0) { | |
411 | Log.Info(" " + encodingName(key) + ": " + s[0] + " rects"); | |
412 | } | |
413 | }); | |
414 | ||
415 | Log.Info("Encoding stats since page load:"); | |
416 | Object.keys(stats).forEach(function (key) { | |
417 | var s = stats[key]; | |
418 | Log.Info(" " + encodingName(key) + ": " + s[1] + " rects"); | |
419 | }); | |
420 | }, | |
421 | ||
422 | _cleanup: function () { | |
423 | if (!this._view_only) { this._keyboard.ungrab(); } | |
424 | if (!this._view_only) { this._mouse.ungrab(); } | |
425 | this._display.defaultCursor(); | |
426 | if (Log.get_logging() !== 'debug') { | |
427 | // Show noVNC logo when disconnected, unless in | |
428 | // debug mode | |
429 | this._display.clear(); | |
430 | } | |
431 | }, | |
432 | ||
433 | // Event handler for canvas so this points to the canvas element | |
434 | _focusCanvas: function(event) { | |
435 | // Respect earlier handlers' request to not do side-effects | |
436 | if (!event.defaultPrevented) | |
437 | this.focus(); | |
438 | }, | |
439 | ||
440 | /* | |
441 | * Connection states: | |
442 | * connecting | |
443 | * connected | |
444 | * disconnecting | |
445 | * disconnected - permanent state | |
446 | */ | |
447 | _updateConnectionState: function (state) { | |
448 | var oldstate = this._rfb_connection_state; | |
449 | ||
450 | if (state === oldstate) { | |
451 | Log.Debug("Already in state '" + state + "', ignoring"); | |
452 | return; | |
453 | } | |
454 | ||
455 | // The 'disconnected' state is permanent for each RFB object | |
456 | if (oldstate === 'disconnected') { | |
457 | Log.Error("Tried changing state of a disconnected RFB object"); | |
458 | return; | |
459 | } | |
460 | ||
461 | // Ensure proper transitions before doing anything | |
462 | switch (state) { | |
463 | case 'connected': | |
464 | if (oldstate !== 'connecting') { | |
465 | Log.Error("Bad transition to connected state, " + | |
466 | "previous connection state: " + oldstate); | |
467 | return; | |
468 | } | |
469 | break; | |
470 | ||
471 | case 'disconnected': | |
472 | if (oldstate !== 'disconnecting') { | |
473 | Log.Error("Bad transition to disconnected state, " + | |
474 | "previous connection state: " + oldstate); | |
475 | return; | |
476 | } | |
477 | break; | |
478 | ||
479 | case 'connecting': | |
480 | if (oldstate !== '') { | |
481 | Log.Error("Bad transition to connecting state, " + | |
482 | "previous connection state: " + oldstate); | |
483 | return; | |
484 | } | |
485 | break; | |
486 | ||
487 | case 'disconnecting': | |
488 | if (oldstate !== 'connected' && oldstate !== 'connecting') { | |
489 | Log.Error("Bad transition to disconnecting state, " + | |
490 | "previous connection state: " + oldstate); | |
491 | return; | |
492 | } | |
493 | break; | |
494 | ||
495 | default: | |
496 | Log.Error("Unknown connection state: " + state); | |
497 | return; | |
498 | } | |
499 | ||
500 | // State change actions | |
501 | ||
502 | this._rfb_connection_state = state; | |
503 | this._onUpdateState(this, state, oldstate); | |
504 | ||
505 | var smsg = "New state '" + state + "', was '" + oldstate + "'."; | |
506 | Log.Debug(smsg); | |
507 | ||
508 | if (this._disconnTimer && state !== 'disconnecting') { | |
509 | Log.Debug("Clearing disconnect timer"); | |
510 | clearTimeout(this._disconnTimer); | |
511 | this._disconnTimer = null; | |
512 | ||
513 | // make sure we don't get a double event | |
514 | this._sock.off('close'); | |
515 | } | |
516 | ||
517 | switch (state) { | |
518 | case 'disconnected': | |
519 | // Call onDisconnected callback after onUpdateState since | |
520 | // we don't know if the UI only displays the latest message | |
521 | if (this._rfb_disconnect_reason !== "") { | |
522 | this._onDisconnected(this, this._rfb_disconnect_reason); | |
523 | } else { | |
524 | // No reason means clean disconnect | |
525 | this._onDisconnected(this); | |
526 | } | |
527 | break; | |
528 | ||
529 | case 'connecting': | |
530 | this._connect(); | |
531 | break; | |
532 | ||
533 | case 'disconnecting': | |
534 | this._disconnect(); | |
535 | ||
536 | this._disconnTimer = setTimeout(function () { | |
537 | this._rfb_disconnect_reason = _("Disconnect timeout"); | |
538 | this._updateConnectionState('disconnected'); | |
539 | }.bind(this), this._disconnectTimeout * 1000); | |
540 | break; | |
541 | } | |
542 | }, | |
543 | ||
544 | /* Print errors and disconnect | |
545 | * | |
546 | * The optional parameter 'details' is used for information that | |
547 | * should be logged but not sent to the user interface. | |
548 | */ | |
549 | _fail: function (msg, details) { | |
550 | var fullmsg = msg; | |
551 | if (typeof details !== 'undefined') { | |
552 | fullmsg = msg + " (" + details + ")"; | |
553 | } | |
554 | switch (this._rfb_connection_state) { | |
555 | case 'disconnecting': | |
556 | Log.Error("Failed when disconnecting: " + fullmsg); | |
557 | break; | |
558 | case 'connected': | |
559 | Log.Error("Failed while connected: " + fullmsg); | |
560 | break; | |
561 | case 'connecting': | |
562 | Log.Error("Failed when connecting: " + fullmsg); | |
563 | break; | |
564 | default: | |
565 | Log.Error("RFB failure: " + fullmsg); | |
566 | break; | |
567 | } | |
568 | this._rfb_disconnect_reason = msg; //This is sent to the UI | |
569 | ||
570 | // Transition to disconnected without waiting for socket to close | |
571 | this._updateConnectionState('disconnecting'); | |
572 | this._updateConnectionState('disconnected'); | |
573 | ||
574 | return false; | |
575 | }, | |
576 | ||
577 | /* | |
578 | * Send a notification to the UI. Valid levels are: | |
579 | * 'normal'|'warn'|'error' | |
580 | * | |
581 | * NOTE: Options could be added in the future. | |
582 | * NOTE: If this function is called multiple times, remember that the | |
583 | * interface could be only showing the latest notification. | |
584 | */ | |
585 | _notification: function(msg, level, options) { | |
586 | switch (level) { | |
587 | case 'normal': | |
588 | case 'warn': | |
589 | case 'error': | |
590 | Log.Debug("Notification[" + level + "]:" + msg); | |
591 | break; | |
592 | default: | |
593 | Log.Error("Invalid notification level: " + level); | |
594 | return; | |
595 | } | |
596 | ||
597 | if (options) { | |
598 | this._onNotification(this, msg, level, options); | |
599 | } else { | |
600 | this._onNotification(this, msg, level); | |
601 | } | |
602 | }, | |
603 | ||
604 | _setCapability: function (cap, val) { | |
605 | this._capabilities[cap] = val; | |
606 | this._onCapabilities(this, this._capabilities); | |
607 | }, | |
608 | ||
609 | _handle_message: function () { | |
610 | if (this._sock.rQlen() === 0) { | |
611 | Log.Warn("handle_message called on an empty receive queue"); | |
612 | return; | |
613 | } | |
614 | ||
615 | switch (this._rfb_connection_state) { | |
616 | case 'disconnected': | |
617 | Log.Error("Got data while disconnected"); | |
618 | break; | |
619 | case 'connected': | |
620 | while (true) { | |
621 | if (this._flushing) { | |
622 | break; | |
623 | } | |
624 | if (!this._normal_msg()) { | |
625 | break; | |
626 | } | |
627 | if (this._sock.rQlen() === 0) { | |
628 | break; | |
629 | } | |
630 | } | |
631 | break; | |
632 | default: | |
633 | this._init_msg(); | |
634 | break; | |
635 | } | |
636 | }, | |
637 | ||
638 | _handleKeyEvent: function (keysym, code, down) { | |
639 | this.sendKey(keysym, code, down); | |
640 | }, | |
641 | ||
642 | _handleMouseButton: function (x, y, down, bmask) { | |
643 | if (down) { | |
644 | this._mouse_buttonMask |= bmask; | |
645 | } else { | |
646 | this._mouse_buttonMask &= ~bmask; | |
647 | } | |
648 | ||
649 | if (this._viewportDrag) { | |
650 | if (down && !this._viewportDragging) { | |
651 | this._viewportDragging = true; | |
652 | this._viewportDragPos = {'x': x, 'y': y}; | |
653 | ||
654 | // Skip sending mouse events | |
655 | return; | |
656 | } else { | |
657 | this._viewportDragging = false; | |
658 | ||
659 | // If the viewport didn't actually move, then treat as a mouse click event | |
660 | // Send the button down event here, as the button up event is sent at the end of this function | |
661 | if (!this._viewportHasMoved && !this._view_only) { | |
662 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), bmask); | |
663 | } | |
664 | this._viewportHasMoved = false; | |
665 | } | |
666 | } | |
667 | ||
668 | if (this._view_only) { return; } // View only, skip mouse events | |
669 | ||
670 | if (this._rfb_connection_state !== 'connected') { return; } | |
671 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); | |
672 | }, | |
673 | ||
674 | _handleMouseMove: function (x, y) { | |
675 | if (this._viewportDragging) { | |
676 | var deltaX = this._viewportDragPos.x - x; | |
677 | var deltaY = this._viewportDragPos.y - y; | |
678 | ||
679 | // The goal is to trigger on a certain physical width, the | |
680 | // devicePixelRatio brings us a bit closer but is not optimal. | |
681 | var dragThreshold = 10 * (window.devicePixelRatio || 1); | |
682 | ||
683 | if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold || | |
684 | Math.abs(deltaY) > dragThreshold)) { | |
685 | this._viewportHasMoved = true; | |
686 | ||
687 | this._viewportDragPos = {'x': x, 'y': y}; | |
688 | this._display.viewportChangePos(deltaX, deltaY); | |
689 | } | |
690 | ||
691 | // Skip sending mouse events | |
692 | return; | |
693 | } | |
694 | ||
695 | if (this._view_only) { return; } // View only, skip mouse events | |
696 | ||
697 | if (this._rfb_connection_state !== 'connected') { return; } | |
698 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); | |
699 | }, | |
700 | ||
701 | // Message Handlers | |
702 | ||
703 | _negotiate_protocol_version: function () { | |
704 | if (this._sock.rQlen() < 12) { | |
705 | return this._fail("Error while negotiating with server", | |
706 | "Incomplete protocol version"); | |
707 | } | |
708 | ||
709 | var sversion = this._sock.rQshiftStr(12).substr(4, 7); | |
710 | Log.Info("Server ProtocolVersion: " + sversion); | |
711 | var is_repeater = 0; | |
712 | switch (sversion) { | |
713 | case "000.000": // UltraVNC repeater | |
714 | is_repeater = 1; | |
715 | break; | |
716 | case "003.003": | |
717 | case "003.006": // UltraVNC | |
718 | case "003.889": // Apple Remote Desktop | |
719 | this._rfb_version = 3.3; | |
720 | break; | |
721 | case "003.007": | |
722 | this._rfb_version = 3.7; | |
723 | break; | |
724 | case "003.008": | |
725 | case "004.000": // Intel AMT KVM | |
726 | case "004.001": // RealVNC 4.6 | |
727 | case "005.000": // RealVNC 5.3 | |
728 | this._rfb_version = 3.8; | |
729 | break; | |
730 | default: | |
731 | return this._fail("Unsupported server", | |
732 | "Invalid server version: " + sversion); | |
733 | } | |
734 | ||
735 | if (is_repeater) { | |
736 | var repeaterID = this._repeaterID; | |
737 | while (repeaterID.length < 250) { | |
738 | repeaterID += "\0"; | |
739 | } | |
740 | this._sock.send_string(repeaterID); | |
741 | return true; | |
742 | } | |
743 | ||
744 | if (this._rfb_version > this._rfb_max_version) { | |
745 | this._rfb_version = this._rfb_max_version; | |
746 | } | |
747 | ||
748 | var cversion = "00" + parseInt(this._rfb_version, 10) + | |
749 | ".00" + ((this._rfb_version * 10) % 10); | |
750 | this._sock.send_string("RFB " + cversion + "\n"); | |
751 | Log.Debug('Sent ProtocolVersion: ' + cversion); | |
752 | ||
753 | this._rfb_init_state = 'Security'; | |
754 | }, | |
755 | ||
756 | _negotiate_security: function () { | |
757 | // Polyfill since IE and PhantomJS doesn't have | |
758 | // TypedArray.includes() | |
759 | function includes(item, array) { | |
760 | for (var i = 0; i < array.length; i++) { | |
761 | if (array[i] === item) { | |
762 | return true; | |
763 | } | |
764 | } | |
765 | return false; | |
766 | } | |
767 | ||
768 | if (this._rfb_version >= 3.7) { | |
769 | // Server sends supported list, client decides | |
770 | var num_types = this._sock.rQshift8(); | |
771 | if (this._sock.rQwait("security type", num_types, 1)) { return false; } | |
772 | ||
773 | if (num_types === 0) { | |
774 | var strlen = this._sock.rQshift32(); | |
775 | var reason = this._sock.rQshiftStr(strlen); | |
776 | return this._fail("Error while negotiating with server", | |
777 | "Security failure: " + reason); | |
778 | } | |
779 | ||
780 | var types = this._sock.rQshiftBytes(num_types); | |
781 | Log.Debug("Server security types: " + types); | |
782 | ||
783 | // Look for each auth in preferred order | |
784 | this._rfb_auth_scheme = 0; | |
785 | if (includes(1, types)) { | |
786 | this._rfb_auth_scheme = 1; // None | |
787 | } else if (includes(22, types)) { | |
788 | this._rfb_auth_scheme = 22; // XVP | |
789 | } else if (includes(16, types)) { | |
790 | this._rfb_auth_scheme = 16; // Tight | |
791 | } else if (includes(2, types)) { | |
792 | this._rfb_auth_scheme = 2; // VNC Auth | |
793 | } else { | |
794 | return this._fail("Unsupported server", | |
795 | "Unsupported security types: " + types); | |
796 | } | |
797 | ||
798 | this._sock.send([this._rfb_auth_scheme]); | |
799 | } else { | |
800 | // Server decides | |
801 | if (this._sock.rQwait("security scheme", 4)) { return false; } | |
802 | this._rfb_auth_scheme = this._sock.rQshift32(); | |
803 | } | |
804 | ||
805 | this._rfb_init_state = 'Authentication'; | |
806 | Log.Debug('Authenticating using scheme: ' + this._rfb_auth_scheme); | |
807 | ||
808 | return this._init_msg(); // jump to authentication | |
809 | }, | |
810 | ||
811 | // authentication | |
812 | _negotiate_xvp_auth: function () { | |
813 | if (!this._rfb_credentials.username || | |
814 | !this._rfb_credentials.password || | |
815 | !this._rfb_credentials.target) { | |
816 | this._onCredentialsRequired(this, ["username", "password", "target"]); | |
817 | return false; | |
818 | } | |
819 | ||
820 | var xvp_auth_str = String.fromCharCode(this._rfb_credentials.username.length) + | |
821 | String.fromCharCode(this._rfb_credentials.target.length) + | |
822 | this._rfb_credentials.username + | |
823 | this._rfb_credentials.target; | |
824 | this._sock.send_string(xvp_auth_str); | |
825 | this._rfb_auth_scheme = 2; | |
826 | return this._negotiate_authentication(); | |
827 | }, | |
828 | ||
829 | _negotiate_std_vnc_auth: function () { | |
830 | if (this._sock.rQwait("auth challenge", 16)) { return false; } | |
831 | ||
832 | if (!this._rfb_credentials.password) { | |
833 | this._onCredentialsRequired(this, ["password"]); | |
834 | return false; | |
835 | } | |
836 | ||
837 | // TODO(directxman12): make genDES not require an Array | |
838 | var challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16)); | |
839 | var response = RFB.genDES(this._rfb_credentials.password, challenge); | |
840 | this._sock.send(response); | |
841 | this._rfb_init_state = "SecurityResult"; | |
842 | return true; | |
843 | }, | |
844 | ||
845 | _negotiate_tight_tunnels: function (numTunnels) { | |
846 | var clientSupportedTunnelTypes = { | |
847 | 0: { vendor: 'TGHT', signature: 'NOTUNNEL' } | |
848 | }; | |
849 | var serverSupportedTunnelTypes = {}; | |
850 | // receive tunnel capabilities | |
851 | for (var i = 0; i < numTunnels; i++) { | |
852 | var cap_code = this._sock.rQshift32(); | |
853 | var cap_vendor = this._sock.rQshiftStr(4); | |
854 | var cap_signature = this._sock.rQshiftStr(8); | |
855 | serverSupportedTunnelTypes[cap_code] = { vendor: cap_vendor, signature: cap_signature }; | |
856 | } | |
857 | ||
858 | // choose the notunnel type | |
859 | if (serverSupportedTunnelTypes[0]) { | |
860 | if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor || | |
861 | serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) { | |
862 | return this._fail("Unsupported server", | |
863 | "Client's tunnel type had the incorrect " + | |
864 | "vendor or signature"); | |
865 | } | |
866 | this._sock.send([0, 0, 0, 0]); // use NOTUNNEL | |
867 | return false; // wait until we receive the sub auth count to continue | |
868 | } else { | |
869 | return this._fail("Unsupported server", | |
870 | "Server wanted tunnels, but doesn't support " + | |
871 | "the notunnel type"); | |
872 | } | |
873 | }, | |
874 | ||
875 | _negotiate_tight_auth: function () { | |
876 | if (!this._rfb_tightvnc) { // first pass, do the tunnel negotiation | |
877 | if (this._sock.rQwait("num tunnels", 4)) { return false; } | |
878 | var numTunnels = this._sock.rQshift32(); | |
879 | if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; } | |
880 | ||
881 | this._rfb_tightvnc = true; | |
882 | ||
883 | if (numTunnels > 0) { | |
884 | this._negotiate_tight_tunnels(numTunnels); | |
885 | return false; // wait until we receive the sub auth to continue | |
886 | } | |
887 | } | |
888 | ||
889 | // second pass, do the sub-auth negotiation | |
890 | if (this._sock.rQwait("sub auth count", 4)) { return false; } | |
891 | var subAuthCount = this._sock.rQshift32(); | |
892 | if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected | |
893 | this._rfb_init_state = 'SecurityResult'; | |
894 | return true; | |
895 | } | |
896 | ||
897 | if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; } | |
898 | ||
899 | var clientSupportedTypes = { | |
900 | 'STDVNOAUTH__': 1, | |
901 | 'STDVVNCAUTH_': 2 | |
902 | }; | |
903 | ||
904 | var serverSupportedTypes = []; | |
905 | ||
906 | for (var i = 0; i < subAuthCount; i++) { | |
907 | var capNum = this._sock.rQshift32(); | |
908 | var capabilities = this._sock.rQshiftStr(12); | |
909 | serverSupportedTypes.push(capabilities); | |
910 | } | |
911 | ||
912 | for (var authType in clientSupportedTypes) { | |
913 | if (serverSupportedTypes.indexOf(authType) != -1) { | |
914 | this._sock.send([0, 0, 0, clientSupportedTypes[authType]]); | |
915 | ||
916 | switch (authType) { | |
917 | case 'STDVNOAUTH__': // no auth | |
918 | this._rfb_init_state = 'SecurityResult'; | |
919 | return true; | |
920 | case 'STDVVNCAUTH_': // VNC auth | |
921 | this._rfb_auth_scheme = 2; | |
922 | return this._init_msg(); | |
923 | default: | |
924 | return this._fail("Unsupported server", | |
925 | "Unsupported tiny auth scheme: " + | |
926 | authType); | |
927 | } | |
928 | } | |
929 | } | |
930 | ||
931 | return this._fail("Unsupported server", | |
932 | "No supported sub-auth types!"); | |
933 | }, | |
934 | ||
935 | _negotiate_authentication: function () { | |
936 | switch (this._rfb_auth_scheme) { | |
937 | case 0: // connection failed | |
938 | if (this._sock.rQwait("auth reason", 4)) { return false; } | |
939 | var strlen = this._sock.rQshift32(); | |
940 | var reason = this._sock.rQshiftStr(strlen); | |
941 | return this._fail("Authentication failure", reason); | |
942 | ||
943 | case 1: // no auth | |
944 | if (this._rfb_version >= 3.8) { | |
945 | this._rfb_init_state = 'SecurityResult'; | |
946 | return true; | |
947 | } | |
948 | this._rfb_init_state = 'ClientInitialisation'; | |
949 | return this._init_msg(); | |
950 | ||
951 | case 22: // XVP auth | |
952 | return this._negotiate_xvp_auth(); | |
953 | ||
954 | case 2: // VNC authentication | |
955 | return this._negotiate_std_vnc_auth(); | |
956 | ||
957 | case 16: // TightVNC Security Type | |
958 | return this._negotiate_tight_auth(); | |
959 | ||
960 | default: | |
961 | return this._fail("Unsupported server", | |
962 | "Unsupported auth scheme: " + | |
963 | this._rfb_auth_scheme); | |
964 | } | |
965 | }, | |
966 | ||
967 | _handle_security_result: function () { | |
968 | if (this._sock.rQwait('VNC auth response ', 4)) { return false; } | |
969 | switch (this._sock.rQshift32()) { | |
970 | case 0: // OK | |
971 | this._rfb_init_state = 'ClientInitialisation'; | |
972 | Log.Debug('Authentication OK'); | |
973 | return this._init_msg(); | |
974 | case 1: // failed | |
975 | if (this._rfb_version >= 3.8) { | |
976 | var length = this._sock.rQshift32(); | |
977 | if (this._sock.rQwait("SecurityResult reason", length, 8)) { return false; } | |
978 | var reason = this._sock.rQshiftStr(length); | |
979 | return this._fail("Authentication failure", reason); | |
980 | } else { | |
981 | return this._fail("Authentication failure"); | |
982 | } | |
983 | case 2: | |
984 | return this._fail("Too many authentication attempts"); | |
985 | default: | |
986 | return this._fail("Unsupported server", | |
987 | "Unknown SecurityResult"); | |
988 | } | |
989 | }, | |
990 | ||
991 | _negotiate_server_init: function () { | |
992 | if (this._sock.rQwait("server initialization", 24)) { return false; } | |
993 | ||
994 | /* Screen size */ | |
995 | var width = this._sock.rQshift16(); | |
996 | var height = this._sock.rQshift16(); | |
997 | ||
998 | /* PIXEL_FORMAT */ | |
999 | var bpp = this._sock.rQshift8(); | |
1000 | var depth = this._sock.rQshift8(); | |
1001 | var big_endian = this._sock.rQshift8(); | |
1002 | var true_color = this._sock.rQshift8(); | |
1003 | ||
1004 | var red_max = this._sock.rQshift16(); | |
1005 | var green_max = this._sock.rQshift16(); | |
1006 | var blue_max = this._sock.rQshift16(); | |
1007 | var red_shift = this._sock.rQshift8(); | |
1008 | var green_shift = this._sock.rQshift8(); | |
1009 | var blue_shift = this._sock.rQshift8(); | |
1010 | this._sock.rQskipBytes(3); // padding | |
1011 | ||
1012 | // NB(directxman12): we don't want to call any callbacks or print messages until | |
1013 | // *after* we're past the point where we could backtrack | |
1014 | ||
1015 | /* Connection name/title */ | |
1016 | var name_length = this._sock.rQshift32(); | |
1017 | if (this._sock.rQwait('server init name', name_length, 24)) { return false; } | |
1018 | this._fb_name = decodeUTF8(this._sock.rQshiftStr(name_length)); | |
1019 | ||
1020 | if (this._rfb_tightvnc) { | |
1021 | if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; } | |
1022 | // In TightVNC mode, ServerInit message is extended | |
1023 | var numServerMessages = this._sock.rQshift16(); | |
1024 | var numClientMessages = this._sock.rQshift16(); | |
1025 | var numEncodings = this._sock.rQshift16(); | |
1026 | this._sock.rQskipBytes(2); // padding | |
1027 | ||
1028 | var totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16; | |
1029 | if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + name_length)) { return false; } | |
1030 | ||
1031 | // we don't actually do anything with the capability information that TIGHT sends, | |
1032 | // so we just skip the all of this. | |
1033 | ||
1034 | // TIGHT server message capabilities | |
1035 | this._sock.rQskipBytes(16 * numServerMessages); | |
1036 | ||
1037 | // TIGHT client message capabilities | |
1038 | this._sock.rQskipBytes(16 * numClientMessages); | |
1039 | ||
1040 | // TIGHT encoding capabilities | |
1041 | this._sock.rQskipBytes(16 * numEncodings); | |
1042 | } | |
1043 | ||
1044 | // NB(directxman12): these are down here so that we don't run them multiple times | |
1045 | // if we backtrack | |
1046 | Log.Info("Screen: " + width + "x" + height + | |
1047 | ", bpp: " + bpp + ", depth: " + depth + | |
1048 | ", big_endian: " + big_endian + | |
1049 | ", true_color: " + true_color + | |
1050 | ", red_max: " + red_max + | |
1051 | ", green_max: " + green_max + | |
1052 | ", blue_max: " + blue_max + | |
1053 | ", red_shift: " + red_shift + | |
1054 | ", green_shift: " + green_shift + | |
1055 | ", blue_shift: " + blue_shift); | |
1056 | ||
1057 | if (big_endian !== 0) { | |
1058 | Log.Warn("Server native endian is not little endian"); | |
1059 | } | |
1060 | ||
1061 | if (red_shift !== 16) { | |
1062 | Log.Warn("Server native red-shift is not 16"); | |
1063 | } | |
1064 | ||
1065 | if (blue_shift !== 0) { | |
1066 | Log.Warn("Server native blue-shift is not 0"); | |
1067 | } | |
1068 | ||
1069 | // we're past the point where we could backtrack, so it's safe to call this | |
1070 | this._onDesktopName(this, this._fb_name); | |
1071 | ||
1072 | this._resize(width, height); | |
1073 | ||
1074 | if (!this._view_only) { this._keyboard.grab(); } | |
1075 | if (!this._view_only) { this._mouse.grab(); } | |
1076 | ||
1077 | this._fb_depth = 24; | |
1078 | ||
1079 | if (this._fb_name === "Intel(r) AMT KVM") { | |
1080 | Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode."); | |
1081 | this._fb_depth = 8; | |
1082 | } | |
1083 | ||
1084 | RFB.messages.pixelFormat(this._sock, this._fb_depth, true); | |
1085 | this._sendEncodings(); | |
1086 | RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fb_width, this._fb_height); | |
1087 | ||
1088 | this._timing.fbu_rt_start = (new Date()).getTime(); | |
1089 | this._timing.pixels = 0; | |
1090 | ||
1091 | // Cursor will be server side until the server decides to honor | |
1092 | // our request and send over the cursor image | |
1093 | this._display.disableLocalCursor(); | |
1094 | ||
1095 | this._updateConnectionState('connected'); | |
1096 | return true; | |
1097 | }, | |
1098 | ||
1099 | _sendEncodings: function () { | |
1100 | var encs = []; | |
1101 | ||
1102 | // In preference order | |
1103 | encs.push(encodings.encodingCopyRect); | |
1104 | // Only supported with full depth support | |
1105 | if (this._fb_depth == 24) { | |
1106 | encs.push(encodings.encodingTight); | |
1107 | encs.push(encodings.encodingHextile); | |
1108 | encs.push(encodings.encodingRRE); | |
1109 | } | |
1110 | encs.push(encodings.encodingRaw); | |
1111 | ||
1112 | // Psuedo-encoding settings | |
1113 | encs.push(encodings.pseudoEncodingTightPNG); | |
1114 | encs.push(encodings.pseudoEncodingQualityLevel0 + 6); | |
1115 | encs.push(encodings.pseudoEncodingCompressLevel0 + 2); | |
1116 | ||
1117 | encs.push(encodings.pseudoEncodingDesktopSize); | |
1118 | encs.push(encodings.pseudoEncodingLastRect); | |
1119 | encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent); | |
1120 | encs.push(encodings.pseudoEncodingExtendedDesktopSize); | |
1121 | encs.push(encodings.pseudoEncodingXvp); | |
1122 | encs.push(encodings.pseudoEncodingFence); | |
1123 | encs.push(encodings.pseudoEncodingContinuousUpdates); | |
1124 | ||
1125 | if (this._local_cursor && this._fb_depth == 24) { | |
1126 | encs.push(encodings.pseudoEncodingCursor); | |
1127 | } | |
1128 | ||
1129 | RFB.messages.clientEncodings(this._sock, encs); | |
1130 | }, | |
1131 | ||
1132 | /* RFB protocol initialization states: | |
1133 | * ProtocolVersion | |
1134 | * Security | |
1135 | * Authentication | |
1136 | * SecurityResult | |
1137 | * ClientInitialization - not triggered by server message | |
1138 | * ServerInitialization | |
1139 | */ | |
1140 | _init_msg: function () { | |
1141 | switch (this._rfb_init_state) { | |
1142 | case 'ProtocolVersion': | |
1143 | return this._negotiate_protocol_version(); | |
1144 | ||
1145 | case 'Security': | |
1146 | return this._negotiate_security(); | |
1147 | ||
1148 | case 'Authentication': | |
1149 | return this._negotiate_authentication(); | |
1150 | ||
1151 | case 'SecurityResult': | |
1152 | return this._handle_security_result(); | |
1153 | ||
1154 | case 'ClientInitialisation': | |
1155 | this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation | |
1156 | this._rfb_init_state = 'ServerInitialisation'; | |
1157 | return true; | |
1158 | ||
1159 | case 'ServerInitialisation': | |
1160 | return this._negotiate_server_init(); | |
1161 | ||
1162 | default: | |
1163 | return this._fail("Internal error", "Unknown init state: " + | |
1164 | this._rfb_init_state); | |
1165 | } | |
1166 | }, | |
1167 | ||
1168 | _handle_set_colour_map_msg: function () { | |
1169 | Log.Debug("SetColorMapEntries"); | |
1170 | ||
1171 | return this._fail("Protocol error", "Unexpected SetColorMapEntries message"); | |
1172 | }, | |
1173 | ||
1174 | _handle_server_cut_text: function () { | |
1175 | Log.Debug("ServerCutText"); | |
1176 | ||
1177 | if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; } | |
1178 | this._sock.rQskipBytes(3); // Padding | |
1179 | var length = this._sock.rQshift32(); | |
1180 | if (this._sock.rQwait("ServerCutText", length, 8)) { return false; } | |
1181 | ||
1182 | var text = this._sock.rQshiftStr(length); | |
1183 | ||
1184 | if (this._view_only) { return true; } | |
1185 | ||
1186 | this._onClipboard(this, text); | |
1187 | ||
1188 | return true; | |
1189 | }, | |
1190 | ||
1191 | _handle_server_fence_msg: function() { | |
1192 | if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; } | |
1193 | this._sock.rQskipBytes(3); // Padding | |
1194 | var flags = this._sock.rQshift32(); | |
1195 | var length = this._sock.rQshift8(); | |
1196 | ||
1197 | if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; } | |
1198 | ||
1199 | if (length > 64) { | |
1200 | Log.Warn("Bad payload length (" + length + ") in fence response"); | |
1201 | length = 64; | |
1202 | } | |
1203 | ||
1204 | var payload = this._sock.rQshiftStr(length); | |
1205 | ||
1206 | this._supportsFence = true; | |
1207 | ||
1208 | /* | |
1209 | * Fence flags | |
1210 | * | |
1211 | * (1<<0) - BlockBefore | |
1212 | * (1<<1) - BlockAfter | |
1213 | * (1<<2) - SyncNext | |
1214 | * (1<<31) - Request | |
1215 | */ | |
1216 | ||
1217 | if (!(flags & (1<<31))) { | |
1218 | return this._fail("Internal error", | |
1219 | "Unexpected fence response"); | |
1220 | } | |
1221 | ||
1222 | // Filter out unsupported flags | |
1223 | // FIXME: support syncNext | |
1224 | flags &= (1<<0) | (1<<1); | |
1225 | ||
1226 | // BlockBefore and BlockAfter are automatically handled by | |
1227 | // the fact that we process each incoming message | |
1228 | // synchronuosly. | |
1229 | RFB.messages.clientFence(this._sock, flags, payload); | |
1230 | ||
1231 | return true; | |
1232 | }, | |
1233 | ||
1234 | _handle_xvp_msg: function () { | |
1235 | if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; } | |
1236 | this._sock.rQskip8(); // Padding | |
1237 | var xvp_ver = this._sock.rQshift8(); | |
1238 | var xvp_msg = this._sock.rQshift8(); | |
1239 | ||
1240 | switch (xvp_msg) { | |
1241 | case 0: // XVP_FAIL | |
1242 | Log.Error("Operation Failed"); | |
1243 | this._notification("XVP Operation Failed", 'error'); | |
1244 | break; | |
1245 | case 1: // XVP_INIT | |
1246 | this._rfb_xvp_ver = xvp_ver; | |
1247 | Log.Info("XVP extensions enabled (version " + this._rfb_xvp_ver + ")"); | |
1248 | this._setCapability("power", true); | |
1249 | break; | |
1250 | default: | |
1251 | this._fail("Unexpected server message", | |
1252 | "Illegal server XVP message " + xvp_msg); | |
1253 | break; | |
1254 | } | |
1255 | ||
1256 | return true; | |
1257 | }, | |
1258 | ||
1259 | _normal_msg: function () { | |
1260 | var msg_type; | |
1261 | ||
1262 | if (this._FBU.rects > 0) { | |
1263 | msg_type = 0; | |
1264 | } else { | |
1265 | msg_type = this._sock.rQshift8(); | |
1266 | } | |
1267 | ||
1268 | switch (msg_type) { | |
1269 | case 0: // FramebufferUpdate | |
1270 | var ret = this._framebufferUpdate(); | |
1271 | if (ret && !this._enabledContinuousUpdates) { | |
1272 | RFB.messages.fbUpdateRequest(this._sock, true, 0, 0, | |
1273 | this._fb_width, this._fb_height); | |
1274 | } | |
1275 | return ret; | |
1276 | ||
1277 | case 1: // SetColorMapEntries | |
1278 | return this._handle_set_colour_map_msg(); | |
1279 | ||
1280 | case 2: // Bell | |
1281 | Log.Debug("Bell"); | |
1282 | this._onBell(this); | |
1283 | return true; | |
1284 | ||
1285 | case 3: // ServerCutText | |
1286 | return this._handle_server_cut_text(); | |
1287 | ||
1288 | case 150: // EndOfContinuousUpdates | |
1289 | var first = !(this._supportsContinuousUpdates); | |
1290 | this._supportsContinuousUpdates = true; | |
1291 | this._enabledContinuousUpdates = false; | |
1292 | if (first) { | |
1293 | this._enabledContinuousUpdates = true; | |
1294 | this._updateContinuousUpdates(); | |
1295 | Log.Info("Enabling continuous updates."); | |
1296 | } else { | |
1297 | // FIXME: We need to send a framebufferupdaterequest here | |
1298 | // if we add support for turning off continuous updates | |
1299 | } | |
1300 | return true; | |
1301 | ||
1302 | case 248: // ServerFence | |
1303 | return this._handle_server_fence_msg(); | |
1304 | ||
1305 | case 250: // XVP | |
1306 | return this._handle_xvp_msg(); | |
1307 | ||
1308 | default: | |
1309 | this._fail("Unexpected server message", "Type:" + msg_type); | |
1310 | Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30)); | |
1311 | return true; | |
1312 | } | |
1313 | }, | |
1314 | ||
1315 | _onFlush: function() { | |
1316 | this._flushing = false; | |
1317 | // Resume processing | |
1318 | if (this._sock.rQlen() > 0) { | |
1319 | this._handle_message(); | |
1320 | } | |
1321 | }, | |
1322 | ||
1323 | _framebufferUpdate: function () { | |
1324 | var ret = true; | |
1325 | var now; | |
1326 | ||
1327 | if (this._FBU.rects === 0) { | |
1328 | if (this._sock.rQwait("FBU header", 3, 1)) { return false; } | |
1329 | this._sock.rQskip8(); // Padding | |
1330 | this._FBU.rects = this._sock.rQshift16(); | |
1331 | this._FBU.bytes = 0; | |
1332 | this._timing.cur_fbu = 0; | |
1333 | if (this._timing.fbu_rt_start > 0) { | |
1334 | now = (new Date()).getTime(); | |
1335 | Log.Info("First FBU latency: " + (now - this._timing.fbu_rt_start)); | |
1336 | } | |
1337 | ||
1338 | // Make sure the previous frame is fully rendered first | |
1339 | // to avoid building up an excessive queue | |
1340 | if (this._display.pending()) { | |
1341 | this._flushing = true; | |
1342 | this._display.flush(); | |
1343 | return false; | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | while (this._FBU.rects > 0) { | |
1348 | if (this._rfb_connection_state !== 'connected') { return false; } | |
1349 | ||
1350 | if (this._sock.rQwait("FBU", this._FBU.bytes)) { return false; } | |
1351 | if (this._FBU.bytes === 0) { | |
1352 | if (this._sock.rQwait("rect header", 12)) { return false; } | |
1353 | /* New FramebufferUpdate */ | |
1354 | ||
1355 | var hdr = this._sock.rQshiftBytes(12); | |
1356 | this._FBU.x = (hdr[0] << 8) + hdr[1]; | |
1357 | this._FBU.y = (hdr[2] << 8) + hdr[3]; | |
1358 | this._FBU.width = (hdr[4] << 8) + hdr[5]; | |
1359 | this._FBU.height = (hdr[6] << 8) + hdr[7]; | |
1360 | this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) + | |
1361 | (hdr[10] << 8) + hdr[11], 10); | |
1362 | ||
1363 | if (!this._encHandlers[this._FBU.encoding]) { | |
1364 | this._fail("Unexpected server message", | |
1365 | "Unsupported encoding " + | |
1366 | this._FBU.encoding); | |
1367 | return false; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | this._timing.last_fbu = (new Date()).getTime(); | |
1372 | ||
1373 | ret = this._encHandlers[this._FBU.encoding](); | |
1374 | ||
1375 | now = (new Date()).getTime(); | |
1376 | this._timing.cur_fbu += (now - this._timing.last_fbu); | |
1377 | ||
1378 | if (ret) { | |
1379 | if (!(this._FBU.encoding in this._encStats)) { | |
1380 | this._encStats[this._FBU.encoding] = [0, 0]; | |
1381 | } | |
1382 | this._encStats[this._FBU.encoding][0]++; | |
1383 | this._encStats[this._FBU.encoding][1]++; | |
1384 | this._timing.pixels += this._FBU.width * this._FBU.height; | |
1385 | } | |
1386 | ||
1387 | if (this._timing.pixels >= (this._fb_width * this._fb_height)) { | |
1388 | if ((this._FBU.width === this._fb_width && this._FBU.height === this._fb_height) || | |
1389 | this._timing.fbu_rt_start > 0) { | |
1390 | this._timing.full_fbu_total += this._timing.cur_fbu; | |
1391 | this._timing.full_fbu_cnt++; | |
1392 | Log.Info("Timing of full FBU, curr: " + | |
1393 | this._timing.cur_fbu + ", total: " + | |
1394 | this._timing.full_fbu_total + ", cnt: " + | |
1395 | this._timing.full_fbu_cnt + ", avg: " + | |
1396 | (this._timing.full_fbu_total / this._timing.full_fbu_cnt)); | |
1397 | } | |
1398 | ||
1399 | if (this._timing.fbu_rt_start > 0) { | |
1400 | var fbu_rt_diff = now - this._timing.fbu_rt_start; | |
1401 | this._timing.fbu_rt_total += fbu_rt_diff; | |
1402 | this._timing.fbu_rt_cnt++; | |
1403 | Log.Info("full FBU round-trip, cur: " + | |
1404 | fbu_rt_diff + ", total: " + | |
1405 | this._timing.fbu_rt_total + ", cnt: " + | |
1406 | this._timing.fbu_rt_cnt + ", avg: " + | |
1407 | (this._timing.fbu_rt_total / this._timing.fbu_rt_cnt)); | |
1408 | this._timing.fbu_rt_start = 0; | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | if (!ret) { return ret; } // need more data | |
1413 | } | |
1414 | ||
1415 | this._display.flip(); | |
1416 | ||
1417 | return true; // We finished this FBU | |
1418 | }, | |
1419 | ||
1420 | _updateContinuousUpdates: function() { | |
1421 | if (!this._enabledContinuousUpdates) { return; } | |
1422 | ||
1423 | RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0, | |
1424 | this._fb_width, this._fb_height); | |
1425 | }, | |
1426 | ||
1427 | _resize: function(width, height) { | |
1428 | this._fb_width = width; | |
1429 | this._fb_height = height; | |
1430 | ||
1431 | this._destBuff = new Uint8Array(this._fb_width * this._fb_height * 4); | |
1432 | ||
1433 | this._display.resize(this._fb_width, this._fb_height); | |
1434 | this._onFBResize(this, this._fb_width, this._fb_height); | |
1435 | ||
1436 | this._timing.fbu_rt_start = (new Date()).getTime(); | |
1437 | this._updateContinuousUpdates(); | |
1438 | }, | |
1439 | ||
1440 | _xvpOp: function (ver, op) { | |
1441 | if (this._rfb_xvp_ver < ver) { return; } | |
1442 | Log.Info("Sending XVP operation " + op + " (version " + ver + ")"); | |
1443 | RFB.messages.xvpOp(this._sock, ver, op); | |
1444 | }, | |
1445 | }; | |
1446 | ||
1447 | make_properties(RFB, [ | |
1448 | ['target', 'wo', 'dom'], // VNC display rendering Canvas object | |
1449 | ['local_cursor', 'rw', 'bool'], // Request locally rendered cursor | |
1450 | ['shared', 'rw', 'bool'], // Request shared mode | |
1451 | ['view_only', 'rw', 'bool'], // Disable client mouse/keyboard | |
1452 | ['touchButton', 'rw', 'int'], // Button mask (1, 2, 4) for touch devices (0 means ignore clicks) | |
1453 | ['scale', 'rw', 'float'], // Display area scale factor | |
1454 | ['viewport', 'rw', 'bool'], // Use viewport clipping | |
1455 | ['disconnectTimeout', 'rw', 'int'], // Time (s) to wait for disconnection | |
1456 | ['wsProtocols', 'rw', 'arr'], // Protocols to use in the WebSocket connection | |
1457 | ['repeaterID', 'rw', 'str'], // [UltraVNC] RepeaterID to connect to | |
1458 | ['viewportDrag', 'rw', 'bool'], // Move the viewport on mouse drags | |
1459 | ['capabilities', 'ro', 'arr'], // Supported capabilities | |
1460 | ||
1461 | // Callback functions | |
1462 | ['onUpdateState', 'rw', 'func'], // onUpdateState(rfb, state, oldstate): connection state change | |
1463 | ['onNotification', 'rw', 'func'], // onNotification(rfb, msg, level, options): notification for the UI | |
1464 | ['onDisconnected', 'rw', 'func'], // onDisconnected(rfb, reason): disconnection finished | |
1465 | ['onCredentialsRequired', 'rw', 'func'], // onCredentialsRequired(rfb, types): VNC credentials are required | |
1466 | ['onClipboard', 'rw', 'func'], // onClipboard(rfb, text): RFB clipboard contents received | |
1467 | ['onBell', 'rw', 'func'], // onBell(rfb): RFB Bell message received | |
1468 | ['onFBResize', 'rw', 'func'], // onFBResize(rfb, width, height): frame buffer resized | |
1469 | ['onDesktopName', 'rw', 'func'], // onDesktopName(rfb, name): desktop name received | |
1470 | ['onCapabilities', 'rw', 'func'] // onCapabilities(rfb, caps): the supported capabilities has changed | |
1471 | ]); | |
1472 | ||
1473 | RFB.prototype.set_local_cursor = function (cursor) { | |
1474 | if (!cursor || (cursor in {'0': 1, 'no': 1, 'false': 1})) { | |
1475 | this._local_cursor = false; | |
1476 | this._display.disableLocalCursor(); //Only show server-side cursor | |
1477 | } else { | |
1478 | if (this._display.get_cursor_uri()) { | |
1479 | this._local_cursor = true; | |
1480 | } else { | |
1481 | Log.Warn("Browser does not support local cursor"); | |
1482 | this._display.disableLocalCursor(); | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | // Need to send an updated list of encodings if we are connected | |
1487 | if (this._rfb_connection_state === "connected") { | |
1488 | this._sendEncodings(); | |
1489 | } | |
1490 | }; | |
1491 | ||
1492 | RFB.prototype.set_view_only = function (view_only) { | |
1493 | this._view_only = view_only; | |
1494 | ||
1495 | if (this._rfb_connection_state === "connecting" || | |
1496 | this._rfb_connection_state === "connected") { | |
1497 | if (view_only) { | |
1498 | this._keyboard.ungrab(); | |
1499 | this._mouse.ungrab(); | |
1500 | } else { | |
1501 | this._keyboard.grab(); | |
1502 | this._mouse.grab(); | |
1503 | } | |
1504 | } | |
1505 | }; | |
1506 | ||
1507 | RFB.prototype.set_touchButton = function (button) { | |
1508 | this._mouse.set_touchButton(button); | |
1509 | }; | |
1510 | ||
1511 | RFB.prototype.get_touchButton = function () { | |
1512 | return this._mouse.get_touchButton(); | |
1513 | }; | |
1514 | ||
1515 | RFB.prototype.set_scale = function (scale) { | |
1516 | this._display.set_scale(scale); | |
1517 | }; | |
1518 | ||
1519 | RFB.prototype.get_scale = function () { | |
1520 | return this._display.get_scale(); | |
1521 | }; | |
1522 | ||
1523 | RFB.prototype.set_viewport = function (viewport) { | |
1524 | this._display.set_viewport(viewport); | |
1525 | }; | |
1526 | ||
1527 | RFB.prototype.get_viewport = function () { | |
1528 | return this._display.get_viewport(); | |
1529 | }; | |
1530 | ||
1531 | // Class Methods | |
1532 | RFB.messages = { | |
1533 | keyEvent: function (sock, keysym, down) { | |
1534 | var buff = sock._sQ; | |
1535 | var offset = sock._sQlen; | |
1536 | ||
1537 | buff[offset] = 4; // msg-type | |
1538 | buff[offset + 1] = down; | |
1539 | ||
1540 | buff[offset + 2] = 0; | |
1541 | buff[offset + 3] = 0; | |
1542 | ||
1543 | buff[offset + 4] = (keysym >> 24); | |
1544 | buff[offset + 5] = (keysym >> 16); | |
1545 | buff[offset + 6] = (keysym >> 8); | |
1546 | buff[offset + 7] = keysym; | |
1547 | ||
1548 | sock._sQlen += 8; | |
1549 | sock.flush(); | |
1550 | }, | |
1551 | ||
1552 | QEMUExtendedKeyEvent: function (sock, keysym, down, keycode) { | |
1553 | function getRFBkeycode(xt_scancode) { | |
1554 | var upperByte = (keycode >> 8); | |
1555 | var lowerByte = (keycode & 0x00ff); | |
1556 | if (upperByte === 0xe0 && lowerByte < 0x7f) { | |
1557 | lowerByte = lowerByte | 0x80; | |
1558 | return lowerByte; | |
1559 | } | |
1560 | return xt_scancode; | |
1561 | } | |
1562 | ||
1563 | var buff = sock._sQ; | |
1564 | var offset = sock._sQlen; | |
1565 | ||
1566 | buff[offset] = 255; // msg-type | |
1567 | buff[offset + 1] = 0; // sub msg-type | |
1568 | ||
1569 | buff[offset + 2] = (down >> 8); | |
1570 | buff[offset + 3] = down; | |
1571 | ||
1572 | buff[offset + 4] = (keysym >> 24); | |
1573 | buff[offset + 5] = (keysym >> 16); | |
1574 | buff[offset + 6] = (keysym >> 8); | |
1575 | buff[offset + 7] = keysym; | |
1576 | ||
1577 | var RFBkeycode = getRFBkeycode(keycode); | |
1578 | ||
1579 | buff[offset + 8] = (RFBkeycode >> 24); | |
1580 | buff[offset + 9] = (RFBkeycode >> 16); | |
1581 | buff[offset + 10] = (RFBkeycode >> 8); | |
1582 | buff[offset + 11] = RFBkeycode; | |
1583 | ||
1584 | sock._sQlen += 12; | |
1585 | sock.flush(); | |
1586 | }, | |
1587 | ||
1588 | pointerEvent: function (sock, x, y, mask) { | |
1589 | var buff = sock._sQ; | |
1590 | var offset = sock._sQlen; | |
1591 | ||
1592 | buff[offset] = 5; // msg-type | |
1593 | ||
1594 | buff[offset + 1] = mask; | |
1595 | ||
1596 | buff[offset + 2] = x >> 8; | |
1597 | buff[offset + 3] = x; | |
1598 | ||
1599 | buff[offset + 4] = y >> 8; | |
1600 | buff[offset + 5] = y; | |
1601 | ||
1602 | sock._sQlen += 6; | |
1603 | sock.flush(); | |
1604 | }, | |
1605 | ||
1606 | // TODO(directxman12): make this unicode compatible? | |
1607 | clientCutText: function (sock, text) { | |
1608 | var buff = sock._sQ; | |
1609 | var offset = sock._sQlen; | |
1610 | ||
1611 | buff[offset] = 6; // msg-type | |
1612 | ||
1613 | buff[offset + 1] = 0; // padding | |
1614 | buff[offset + 2] = 0; // padding | |
1615 | buff[offset + 3] = 0; // padding | |
1616 | ||
1617 | var n = text.length; | |
1618 | ||
1619 | buff[offset + 4] = n >> 24; | |
1620 | buff[offset + 5] = n >> 16; | |
1621 | buff[offset + 6] = n >> 8; | |
1622 | buff[offset + 7] = n; | |
1623 | ||
1624 | for (var i = 0; i < n; i++) { | |
1625 | buff[offset + 8 + i] = text.charCodeAt(i); | |
1626 | } | |
1627 | ||
1628 | sock._sQlen += 8 + n; | |
1629 | sock.flush(); | |
1630 | }, | |
1631 | ||
1632 | setDesktopSize: function (sock, width, height, id, flags) { | |
1633 | var buff = sock._sQ; | |
1634 | var offset = sock._sQlen; | |
1635 | ||
1636 | buff[offset] = 251; // msg-type | |
1637 | buff[offset + 1] = 0; // padding | |
1638 | buff[offset + 2] = width >> 8; // width | |
1639 | buff[offset + 3] = width; | |
1640 | buff[offset + 4] = height >> 8; // height | |
1641 | buff[offset + 5] = height; | |
1642 | ||
1643 | buff[offset + 6] = 1; // number-of-screens | |
1644 | buff[offset + 7] = 0; // padding | |
1645 | ||
1646 | // screen array | |
1647 | buff[offset + 8] = id >> 24; // id | |
1648 | buff[offset + 9] = id >> 16; | |
1649 | buff[offset + 10] = id >> 8; | |
1650 | buff[offset + 11] = id; | |
1651 | buff[offset + 12] = 0; // x-position | |
1652 | buff[offset + 13] = 0; | |
1653 | buff[offset + 14] = 0; // y-position | |
1654 | buff[offset + 15] = 0; | |
1655 | buff[offset + 16] = width >> 8; // width | |
1656 | buff[offset + 17] = width; | |
1657 | buff[offset + 18] = height >> 8; // height | |
1658 | buff[offset + 19] = height; | |
1659 | buff[offset + 20] = flags >> 24; // flags | |
1660 | buff[offset + 21] = flags >> 16; | |
1661 | buff[offset + 22] = flags >> 8; | |
1662 | buff[offset + 23] = flags; | |
1663 | ||
1664 | sock._sQlen += 24; | |
1665 | sock.flush(); | |
1666 | }, | |
1667 | ||
1668 | clientFence: function (sock, flags, payload) { | |
1669 | var buff = sock._sQ; | |
1670 | var offset = sock._sQlen; | |
1671 | ||
1672 | buff[offset] = 248; // msg-type | |
1673 | ||
1674 | buff[offset + 1] = 0; // padding | |
1675 | buff[offset + 2] = 0; // padding | |
1676 | buff[offset + 3] = 0; // padding | |
1677 | ||
1678 | buff[offset + 4] = flags >> 24; // flags | |
1679 | buff[offset + 5] = flags >> 16; | |
1680 | buff[offset + 6] = flags >> 8; | |
1681 | buff[offset + 7] = flags; | |
1682 | ||
1683 | var n = payload.length; | |
1684 | ||
1685 | buff[offset + 8] = n; // length | |
1686 | ||
1687 | for (var i = 0; i < n; i++) { | |
1688 | buff[offset + 9 + i] = payload.charCodeAt(i); | |
1689 | } | |
1690 | ||
1691 | sock._sQlen += 9 + n; | |
1692 | sock.flush(); | |
1693 | }, | |
1694 | ||
1695 | enableContinuousUpdates: function (sock, enable, x, y, width, height) { | |
1696 | var buff = sock._sQ; | |
1697 | var offset = sock._sQlen; | |
1698 | ||
1699 | buff[offset] = 150; // msg-type | |
1700 | buff[offset + 1] = enable; // enable-flag | |
1701 | ||
1702 | buff[offset + 2] = x >> 8; // x | |
1703 | buff[offset + 3] = x; | |
1704 | buff[offset + 4] = y >> 8; // y | |
1705 | buff[offset + 5] = y; | |
1706 | buff[offset + 6] = width >> 8; // width | |
1707 | buff[offset + 7] = width; | |
1708 | buff[offset + 8] = height >> 8; // height | |
1709 | buff[offset + 9] = height; | |
1710 | ||
1711 | sock._sQlen += 10; | |
1712 | sock.flush(); | |
1713 | }, | |
1714 | ||
1715 | pixelFormat: function (sock, depth, true_color) { | |
1716 | var buff = sock._sQ; | |
1717 | var offset = sock._sQlen; | |
1718 | ||
1719 | var bpp, bits; | |
1720 | ||
1721 | if (depth > 16) { | |
1722 | bpp = 32; | |
1723 | } else if (depth > 8) { | |
1724 | bpp = 16; | |
1725 | } else { | |
1726 | bpp = 8; | |
1727 | } | |
1728 | ||
1729 | bits = Math.floor(depth/3); | |
1730 | ||
1731 | buff[offset] = 0; // msg-type | |
1732 | ||
1733 | buff[offset + 1] = 0; // padding | |
1734 | buff[offset + 2] = 0; // padding | |
1735 | buff[offset + 3] = 0; // padding | |
1736 | ||
1737 | buff[offset + 4] = bpp; // bits-per-pixel | |
1738 | buff[offset + 5] = depth; // depth | |
1739 | buff[offset + 6] = 0; // little-endian | |
1740 | buff[offset + 7] = true_color ? 1 : 0; // true-color | |
1741 | ||
1742 | buff[offset + 8] = 0; // red-max | |
1743 | buff[offset + 9] = (1 << bits) - 1; // red-max | |
1744 | ||
1745 | buff[offset + 10] = 0; // green-max | |
1746 | buff[offset + 11] = (1 << bits) - 1; // green-max | |
1747 | ||
1748 | buff[offset + 12] = 0; // blue-max | |
1749 | buff[offset + 13] = (1 << bits) - 1; // blue-max | |
1750 | ||
1751 | buff[offset + 14] = bits * 2; // red-shift | |
1752 | buff[offset + 15] = bits * 1; // green-shift | |
1753 | buff[offset + 16] = bits * 0; // blue-shift | |
1754 | ||
1755 | buff[offset + 17] = 0; // padding | |
1756 | buff[offset + 18] = 0; // padding | |
1757 | buff[offset + 19] = 0; // padding | |
1758 | ||
1759 | sock._sQlen += 20; | |
1760 | sock.flush(); | |
1761 | }, | |
1762 | ||
1763 | clientEncodings: function (sock, encodings) { | |
1764 | var buff = sock._sQ; | |
1765 | var offset = sock._sQlen; | |
1766 | ||
1767 | buff[offset] = 2; // msg-type | |
1768 | buff[offset + 1] = 0; // padding | |
1769 | ||
1770 | buff[offset + 2] = encodings.length >> 8; | |
1771 | buff[offset + 3] = encodings.length; | |
1772 | ||
1773 | var i, j = offset + 4; | |
1774 | for (i = 0; i < encodings.length; i++) { | |
1775 | var enc = encodings[i]; | |
1776 | buff[j] = enc >> 24; | |
1777 | buff[j + 1] = enc >> 16; | |
1778 | buff[j + 2] = enc >> 8; | |
1779 | buff[j + 3] = enc; | |
1780 | ||
1781 | j += 4; | |
1782 | } | |
1783 | ||
1784 | sock._sQlen += j - offset; | |
1785 | sock.flush(); | |
1786 | }, | |
1787 | ||
1788 | fbUpdateRequest: function (sock, incremental, x, y, w, h) { | |
1789 | var buff = sock._sQ; | |
1790 | var offset = sock._sQlen; | |
1791 | ||
1792 | if (typeof(x) === "undefined") { x = 0; } | |
1793 | if (typeof(y) === "undefined") { y = 0; } | |
1794 | ||
1795 | buff[offset] = 3; // msg-type | |
1796 | buff[offset + 1] = incremental ? 1 : 0; | |
1797 | ||
1798 | buff[offset + 2] = (x >> 8) & 0xFF; | |
1799 | buff[offset + 3] = x & 0xFF; | |
1800 | ||
1801 | buff[offset + 4] = (y >> 8) & 0xFF; | |
1802 | buff[offset + 5] = y & 0xFF; | |
1803 | ||
1804 | buff[offset + 6] = (w >> 8) & 0xFF; | |
1805 | buff[offset + 7] = w & 0xFF; | |
1806 | ||
1807 | buff[offset + 8] = (h >> 8) & 0xFF; | |
1808 | buff[offset + 9] = h & 0xFF; | |
1809 | ||
1810 | sock._sQlen += 10; | |
1811 | sock.flush(); | |
1812 | }, | |
1813 | ||
1814 | xvpOp: function (sock, ver, op) { | |
1815 | var buff = sock._sQ; | |
1816 | var offset = sock._sQlen; | |
1817 | ||
1818 | buff[offset] = 250; // msg-type | |
1819 | buff[offset + 1] = 0; // padding | |
1820 | ||
1821 | buff[offset + 2] = ver; | |
1822 | buff[offset + 3] = op; | |
1823 | ||
1824 | sock._sQlen += 4; | |
1825 | sock.flush(); | |
1826 | }, | |
1827 | }; | |
1828 | ||
1829 | RFB.genDES = function (password, challenge) { | |
1830 | var passwd = []; | |
1831 | for (var i = 0; i < password.length; i++) { | |
1832 | passwd.push(password.charCodeAt(i)); | |
1833 | } | |
1834 | return (new DES(passwd)).encrypt(challenge); | |
1835 | }; | |
1836 | ||
1837 | RFB.encodingHandlers = { | |
1838 | RAW: function () { | |
1839 | if (this._FBU.lines === 0) { | |
1840 | this._FBU.lines = this._FBU.height; | |
1841 | } | |
1842 | ||
1843 | var pixelSize = this._fb_depth == 8 ? 1 : 4; | |
1844 | this._FBU.bytes = this._FBU.width * pixelSize; // at least a line | |
1845 | if (this._sock.rQwait("RAW", this._FBU.bytes)) { return false; } | |
1846 | var cur_y = this._FBU.y + (this._FBU.height - this._FBU.lines); | |
1847 | var curr_height = Math.min(this._FBU.lines, | |
1848 | Math.floor(this._sock.rQlen() / (this._FBU.width * pixelSize))); | |
1849 | var data = this._sock.get_rQ(); | |
1850 | var index = this._sock.get_rQi(); | |
1851 | if (this._fb_depth == 8) { | |
1852 | var pixels = this._FBU.width * curr_height | |
1853 | var newdata = new Uint8Array(pixels * 4); | |
1854 | var i; | |
1855 | for (i = 0;i < pixels;i++) { | |
1856 | newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3; | |
1857 | newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x3) * 255 / 3; | |
1858 | newdata[i * 4 + 2] = ((data[index + i] >> 4) & 0x3) * 255 / 3; | |
1859 | newdata[i * 4 + 4] = 0; | |
1860 | } | |
1861 | data = newdata; | |
1862 | index = 0; | |
1863 | } | |
1864 | this._display.blitImage(this._FBU.x, cur_y, this._FBU.width, | |
1865 | curr_height, data, index); | |
1866 | this._sock.rQskipBytes(this._FBU.width * curr_height * pixelSize); | |
1867 | this._FBU.lines -= curr_height; | |
1868 | ||
1869 | if (this._FBU.lines > 0) { | |
1870 | this._FBU.bytes = this._FBU.width * pixelSize; // At least another line | |
1871 | } else { | |
1872 | this._FBU.rects--; | |
1873 | this._FBU.bytes = 0; | |
1874 | } | |
1875 | ||
1876 | return true; | |
1877 | }, | |
1878 | ||
1879 | COPYRECT: function () { | |
1880 | this._FBU.bytes = 4; | |
1881 | if (this._sock.rQwait("COPYRECT", 4)) { return false; } | |
1882 | this._display.copyImage(this._sock.rQshift16(), this._sock.rQshift16(), | |
1883 | this._FBU.x, this._FBU.y, this._FBU.width, | |
1884 | this._FBU.height); | |
1885 | ||
1886 | this._FBU.rects--; | |
1887 | this._FBU.bytes = 0; | |
1888 | return true; | |
1889 | }, | |
1890 | ||
1891 | RRE: function () { | |
1892 | var color; | |
1893 | if (this._FBU.subrects === 0) { | |
1894 | this._FBU.bytes = 4 + 4; | |
1895 | if (this._sock.rQwait("RRE", 4 + 4)) { return false; } | |
1896 | this._FBU.subrects = this._sock.rQshift32(); | |
1897 | color = this._sock.rQshiftBytes(4); // Background | |
1898 | this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, color); | |
1899 | } | |
1900 | ||
1901 | while (this._FBU.subrects > 0 && this._sock.rQlen() >= (4 + 8)) { | |
1902 | color = this._sock.rQshiftBytes(4); | |
1903 | var x = this._sock.rQshift16(); | |
1904 | var y = this._sock.rQshift16(); | |
1905 | var width = this._sock.rQshift16(); | |
1906 | var height = this._sock.rQshift16(); | |
1907 | this._display.fillRect(this._FBU.x + x, this._FBU.y + y, width, height, color); | |
1908 | this._FBU.subrects--; | |
1909 | } | |
1910 | ||
1911 | if (this._FBU.subrects > 0) { | |
1912 | var chunk = Math.min(this._rre_chunk_sz, this._FBU.subrects); | |
1913 | this._FBU.bytes = (4 + 8) * chunk; | |
1914 | } else { | |
1915 | this._FBU.rects--; | |
1916 | this._FBU.bytes = 0; | |
1917 | } | |
1918 | ||
1919 | return true; | |
1920 | }, | |
1921 | ||
1922 | HEXTILE: function () { | |
1923 | var rQ = this._sock.get_rQ(); | |
1924 | var rQi = this._sock.get_rQi(); | |
1925 | ||
1926 | if (this._FBU.tiles === 0) { | |
1927 | this._FBU.tiles_x = Math.ceil(this._FBU.width / 16); | |
1928 | this._FBU.tiles_y = Math.ceil(this._FBU.height / 16); | |
1929 | this._FBU.total_tiles = this._FBU.tiles_x * this._FBU.tiles_y; | |
1930 | this._FBU.tiles = this._FBU.total_tiles; | |
1931 | } | |
1932 | ||
1933 | while (this._FBU.tiles > 0) { | |
1934 | this._FBU.bytes = 1; | |
1935 | if (this._sock.rQwait("HEXTILE subencoding", this._FBU.bytes)) { return false; } | |
1936 | var subencoding = rQ[rQi]; // Peek | |
1937 | if (subencoding > 30) { // Raw | |
1938 | this._fail("Unexpected server message", | |
1939 | "Illegal hextile subencoding: " + subencoding); | |
1940 | return false; | |
1941 | } | |
1942 | ||
1943 | var subrects = 0; | |
1944 | var curr_tile = this._FBU.total_tiles - this._FBU.tiles; | |
1945 | var tile_x = curr_tile % this._FBU.tiles_x; | |
1946 | var tile_y = Math.floor(curr_tile / this._FBU.tiles_x); | |
1947 | var x = this._FBU.x + tile_x * 16; | |
1948 | var y = this._FBU.y + tile_y * 16; | |
1949 | var w = Math.min(16, (this._FBU.x + this._FBU.width) - x); | |
1950 | var h = Math.min(16, (this._FBU.y + this._FBU.height) - y); | |
1951 | ||
1952 | // Figure out how much we are expecting | |
1953 | if (subencoding & 0x01) { // Raw | |
1954 | this._FBU.bytes += w * h * 4; | |
1955 | } else { | |
1956 | if (subencoding & 0x02) { // Background | |
1957 | this._FBU.bytes += 4; | |
1958 | } | |
1959 | if (subencoding & 0x04) { // Foreground | |
1960 | this._FBU.bytes += 4; | |
1961 | } | |
1962 | if (subencoding & 0x08) { // AnySubrects | |
1963 | this._FBU.bytes++; // Since we aren't shifting it off | |
1964 | if (this._sock.rQwait("hextile subrects header", this._FBU.bytes)) { return false; } | |
1965 | subrects = rQ[rQi + this._FBU.bytes - 1]; // Peek | |
1966 | if (subencoding & 0x10) { // SubrectsColoured | |
1967 | this._FBU.bytes += subrects * (4 + 2); | |
1968 | } else { | |
1969 | this._FBU.bytes += subrects * 2; | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | if (this._sock.rQwait("hextile", this._FBU.bytes)) { return false; } | |
1975 | ||
1976 | // We know the encoding and have a whole tile | |
1977 | this._FBU.subencoding = rQ[rQi]; | |
1978 | rQi++; | |
1979 | if (this._FBU.subencoding === 0) { | |
1980 | if (this._FBU.lastsubencoding & 0x01) { | |
1981 | // Weird: ignore blanks are RAW | |
1982 | Log.Debug(" Ignoring blank after RAW"); | |
1983 | } else { | |
1984 | this._display.fillRect(x, y, w, h, this._FBU.background); | |
1985 | } | |
1986 | } else if (this._FBU.subencoding & 0x01) { // Raw | |
1987 | this._display.blitImage(x, y, w, h, rQ, rQi); | |
1988 | rQi += this._FBU.bytes - 1; | |
1989 | } else { | |
1990 | if (this._FBU.subencoding & 0x02) { // Background | |
1991 | this._FBU.background = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; | |
1992 | rQi += 4; | |
1993 | } | |
1994 | if (this._FBU.subencoding & 0x04) { // Foreground | |
1995 | this._FBU.foreground = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; | |
1996 | rQi += 4; | |
1997 | } | |
1998 | ||
1999 | this._display.startTile(x, y, w, h, this._FBU.background); | |
2000 | if (this._FBU.subencoding & 0x08) { // AnySubrects | |
2001 | subrects = rQ[rQi]; | |
2002 | rQi++; | |
2003 | ||
2004 | for (var s = 0; s < subrects; s++) { | |
2005 | var color; | |
2006 | if (this._FBU.subencoding & 0x10) { // SubrectsColoured | |
2007 | color = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; | |
2008 | rQi += 4; | |
2009 | } else { | |
2010 | color = this._FBU.foreground; | |
2011 | } | |
2012 | var xy = rQ[rQi]; | |
2013 | rQi++; | |
2014 | var sx = (xy >> 4); | |
2015 | var sy = (xy & 0x0f); | |
2016 | ||
2017 | var wh = rQ[rQi]; | |
2018 | rQi++; | |
2019 | var sw = (wh >> 4) + 1; | |
2020 | var sh = (wh & 0x0f) + 1; | |
2021 | ||
2022 | this._display.subTile(sx, sy, sw, sh, color); | |
2023 | } | |
2024 | } | |
2025 | this._display.finishTile(); | |
2026 | } | |
2027 | this._sock.set_rQi(rQi); | |
2028 | this._FBU.lastsubencoding = this._FBU.subencoding; | |
2029 | this._FBU.bytes = 0; | |
2030 | this._FBU.tiles--; | |
2031 | } | |
2032 | ||
2033 | if (this._FBU.tiles === 0) { | |
2034 | this._FBU.rects--; | |
2035 | } | |
2036 | ||
2037 | return true; | |
2038 | }, | |
2039 | ||
2040 | TIGHT: function () { | |
2041 | this._FBU.bytes = 1; // compression-control byte | |
2042 | if (this._sock.rQwait("TIGHT compression-control", this._FBU.bytes)) { return false; } | |
2043 | ||
2044 | var checksum = function (data) { | |
2045 | var sum = 0; | |
2046 | for (var i = 0; i < data.length; i++) { | |
2047 | sum += data[i]; | |
2048 | if (sum > 65536) sum -= 65536; | |
2049 | } | |
2050 | return sum; | |
2051 | }; | |
2052 | ||
2053 | var resetStreams = 0; | |
2054 | var streamId = -1; | |
2055 | var decompress = function (data, expected) { | |
2056 | for (var i = 0; i < 4; i++) { | |
2057 | if ((resetStreams >> i) & 1) { | |
2058 | this._FBU.zlibs[i].reset(); | |
2059 | Log.Info("Reset zlib stream " + i); | |
2060 | } | |
2061 | } | |
2062 | ||
2063 | //var uncompressed = this._FBU.zlibs[streamId].uncompress(data, 0); | |
2064 | var uncompressed = this._FBU.zlibs[streamId].inflate(data, true, expected); | |
2065 | /*if (uncompressed.status !== 0) { | |
2066 | Log.Error("Invalid data in zlib stream"); | |
2067 | }*/ | |
2068 | ||
2069 | //return uncompressed.data; | |
2070 | return uncompressed; | |
2071 | }.bind(this); | |
2072 | ||
2073 | var indexedToRGBX2Color = function (data, palette, width, height) { | |
2074 | // Convert indexed (palette based) image data to RGB | |
2075 | // TODO: reduce number of calculations inside loop | |
2076 | var dest = this._destBuff; | |
2077 | var w = Math.floor((width + 7) / 8); | |
2078 | var w1 = Math.floor(width / 8); | |
2079 | ||
2080 | /*for (var y = 0; y < height; y++) { | |
2081 | var b, x, dp, sp; | |
2082 | var yoffset = y * width; | |
2083 | var ybitoffset = y * w; | |
2084 | var xoffset, targetbyte; | |
2085 | for (x = 0; x < w1; x++) { | |
2086 | xoffset = yoffset + x * 8; | |
2087 | targetbyte = data[ybitoffset + x]; | |
2088 | for (b = 7; b >= 0; b--) { | |
2089 | dp = (xoffset + 7 - b) * 3; | |
2090 | sp = (targetbyte >> b & 1) * 3; | |
2091 | dest[dp] = palette[sp]; | |
2092 | dest[dp + 1] = palette[sp + 1]; | |
2093 | dest[dp + 2] = palette[sp + 2]; | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | xoffset = yoffset + x * 8; | |
2098 | targetbyte = data[ybitoffset + x]; | |
2099 | for (b = 7; b >= 8 - width % 8; b--) { | |
2100 | dp = (xoffset + 7 - b) * 3; | |
2101 | sp = (targetbyte >> b & 1) * 3; | |
2102 | dest[dp] = palette[sp]; | |
2103 | dest[dp + 1] = palette[sp + 1]; | |
2104 | dest[dp + 2] = palette[sp + 2]; | |
2105 | } | |
2106 | }*/ | |
2107 | ||
2108 | for (var y = 0; y < height; y++) { | |
2109 | var b, x, dp, sp; | |
2110 | for (x = 0; x < w1; x++) { | |
2111 | for (b = 7; b >= 0; b--) { | |
2112 | dp = (y * width + x * 8 + 7 - b) * 4; | |
2113 | sp = (data[y * w + x] >> b & 1) * 3; | |
2114 | dest[dp] = palette[sp]; | |
2115 | dest[dp + 1] = palette[sp + 1]; | |
2116 | dest[dp + 2] = palette[sp + 2]; | |
2117 | dest[dp + 3] = 255; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | for (b = 7; b >= 8 - width % 8; b--) { | |
2122 | dp = (y * width + x * 8 + 7 - b) * 4; | |
2123 | sp = (data[y * w + x] >> b & 1) * 3; | |
2124 | dest[dp] = palette[sp]; | |
2125 | dest[dp + 1] = palette[sp + 1]; | |
2126 | dest[dp + 2] = palette[sp + 2]; | |
2127 | dest[dp + 3] = 255; | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | return dest; | |
2132 | }.bind(this); | |
2133 | ||
2134 | var indexedToRGBX = function (data, palette, width, height) { | |
2135 | // Convert indexed (palette based) image data to RGB | |
2136 | var dest = this._destBuff; | |
2137 | var total = width * height * 4; | |
2138 | for (var i = 0, j = 0; i < total; i += 4, j++) { | |
2139 | var sp = data[j] * 3; | |
2140 | dest[i] = palette[sp]; | |
2141 | dest[i + 1] = palette[sp + 1]; | |
2142 | dest[i + 2] = palette[sp + 2]; | |
2143 | dest[i + 3] = 255; | |
2144 | } | |
2145 | ||
2146 | return dest; | |
2147 | }.bind(this); | |
2148 | ||
2149 | var rQi = this._sock.get_rQi(); | |
2150 | var rQ = this._sock.rQwhole(); | |
2151 | var cmode, data; | |
2152 | var cl_header, cl_data; | |
2153 | ||
2154 | var handlePalette = function () { | |
2155 | var numColors = rQ[rQi + 2] + 1; | |
2156 | var paletteSize = numColors * 3; | |
2157 | this._FBU.bytes += paletteSize; | |
2158 | if (this._sock.rQwait("TIGHT palette " + cmode, this._FBU.bytes)) { return false; } | |
2159 | ||
2160 | var bpp = (numColors <= 2) ? 1 : 8; | |
2161 | var rowSize = Math.floor((this._FBU.width * bpp + 7) / 8); | |
2162 | var raw = false; | |
2163 | if (rowSize * this._FBU.height < 12) { | |
2164 | raw = true; | |
2165 | cl_header = 0; | |
2166 | cl_data = rowSize * this._FBU.height; | |
2167 | //clength = [0, rowSize * this._FBU.height]; | |
2168 | } else { | |
2169 | // begin inline getTightCLength (returning two-item arrays is bad for performance with GC) | |
2170 | var cl_offset = rQi + 3 + paletteSize; | |
2171 | cl_header = 1; | |
2172 | cl_data = 0; | |
2173 | cl_data += rQ[cl_offset] & 0x7f; | |
2174 | if (rQ[cl_offset] & 0x80) { | |
2175 | cl_header++; | |
2176 | cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; | |
2177 | if (rQ[cl_offset + 1] & 0x80) { | |
2178 | cl_header++; | |
2179 | cl_data += rQ[cl_offset + 2] << 14; | |
2180 | } | |
2181 | } | |
2182 | // end inline getTightCLength | |
2183 | } | |
2184 | ||
2185 | this._FBU.bytes += cl_header + cl_data; | |
2186 | if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } | |
2187 | ||
2188 | // Shift ctl, filter id, num colors, palette entries, and clength off | |
2189 | this._sock.rQskipBytes(3); | |
2190 | //var palette = this._sock.rQshiftBytes(paletteSize); | |
2191 | this._sock.rQshiftTo(this._paletteBuff, paletteSize); | |
2192 | this._sock.rQskipBytes(cl_header); | |
2193 | ||
2194 | if (raw) { | |
2195 | data = this._sock.rQshiftBytes(cl_data); | |
2196 | } else { | |
2197 | data = decompress(this._sock.rQshiftBytes(cl_data), rowSize * this._FBU.height); | |
2198 | } | |
2199 | ||
2200 | // Convert indexed (palette based) image data to RGB | |
2201 | var rgbx; | |
2202 | if (numColors == 2) { | |
2203 | rgbx = indexedToRGBX2Color(data, this._paletteBuff, this._FBU.width, this._FBU.height); | |
2204 | this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false); | |
2205 | } else { | |
2206 | rgbx = indexedToRGBX(data, this._paletteBuff, this._FBU.width, this._FBU.height); | |
2207 | this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false); | |
2208 | } | |
2209 | ||
2210 | ||
2211 | return true; | |
2212 | }.bind(this); | |
2213 | ||
2214 | var handleCopy = function () { | |
2215 | var raw = false; | |
2216 | var uncompressedSize = this._FBU.width * this._FBU.height * 3; | |
2217 | if (uncompressedSize < 12) { | |
2218 | raw = true; | |
2219 | cl_header = 0; | |
2220 | cl_data = uncompressedSize; | |
2221 | } else { | |
2222 | // begin inline getTightCLength (returning two-item arrays is for peformance with GC) | |
2223 | var cl_offset = rQi + 1; | |
2224 | cl_header = 1; | |
2225 | cl_data = 0; | |
2226 | cl_data += rQ[cl_offset] & 0x7f; | |
2227 | if (rQ[cl_offset] & 0x80) { | |
2228 | cl_header++; | |
2229 | cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; | |
2230 | if (rQ[cl_offset + 1] & 0x80) { | |
2231 | cl_header++; | |
2232 | cl_data += rQ[cl_offset + 2] << 14; | |
2233 | } | |
2234 | } | |
2235 | // end inline getTightCLength | |
2236 | } | |
2237 | this._FBU.bytes = 1 + cl_header + cl_data; | |
2238 | if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } | |
2239 | ||
2240 | // Shift ctl, clength off | |
2241 | this._sock.rQshiftBytes(1 + cl_header); | |
2242 | ||
2243 | if (raw) { | |
2244 | data = this._sock.rQshiftBytes(cl_data); | |
2245 | } else { | |
2246 | data = decompress(this._sock.rQshiftBytes(cl_data), uncompressedSize); | |
2247 | } | |
2248 | ||
2249 | this._display.blitRgbImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, data, 0, false); | |
2250 | ||
2251 | return true; | |
2252 | }.bind(this); | |
2253 | ||
2254 | var ctl = this._sock.rQpeek8(); | |
2255 | ||
2256 | // Keep tight reset bits | |
2257 | resetStreams = ctl & 0xF; | |
2258 | ||
2259 | // Figure out filter | |
2260 | ctl = ctl >> 4; | |
2261 | streamId = ctl & 0x3; | |
2262 | ||
2263 | if (ctl === 0x08) cmode = "fill"; | |
2264 | else if (ctl === 0x09) cmode = "jpeg"; | |
2265 | else if (ctl === 0x0A) cmode = "png"; | |
2266 | else if (ctl & 0x04) cmode = "filter"; | |
2267 | else if (ctl < 0x04) cmode = "copy"; | |
2268 | else return this._fail("Unexpected server message", | |
2269 | "Illegal tight compression received, " + | |
2270 | "ctl: " + ctl); | |
2271 | ||
2272 | switch (cmode) { | |
2273 | // fill use depth because TPIXELs drop the padding byte | |
2274 | case "fill": // TPIXEL | |
2275 | this._FBU.bytes += 3; | |
2276 | break; | |
2277 | case "jpeg": // max clength | |
2278 | this._FBU.bytes += 3; | |
2279 | break; | |
2280 | case "png": // max clength | |
2281 | this._FBU.bytes += 3; | |
2282 | break; | |
2283 | case "filter": // filter id + num colors if palette | |
2284 | this._FBU.bytes += 2; | |
2285 | break; | |
2286 | case "copy": | |
2287 | break; | |
2288 | } | |
2289 | ||
2290 | if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } | |
2291 | ||
2292 | // Determine FBU.bytes | |
2293 | switch (cmode) { | |
2294 | case "fill": | |
2295 | // skip ctl byte | |
2296 | 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); | |
2297 | this._sock.rQskipBytes(4); | |
2298 | break; | |
2299 | case "png": | |
2300 | case "jpeg": | |
2301 | // begin inline getTightCLength (returning two-item arrays is for peformance with GC) | |
2302 | var cl_offset = rQi + 1; | |
2303 | cl_header = 1; | |
2304 | cl_data = 0; | |
2305 | cl_data += rQ[cl_offset] & 0x7f; | |
2306 | if (rQ[cl_offset] & 0x80) { | |
2307 | cl_header++; | |
2308 | cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; | |
2309 | if (rQ[cl_offset + 1] & 0x80) { | |
2310 | cl_header++; | |
2311 | cl_data += rQ[cl_offset + 2] << 14; | |
2312 | } | |
2313 | } | |
2314 | // end inline getTightCLength | |
2315 | this._FBU.bytes = 1 + cl_header + cl_data; // ctl + clength size + jpeg-data | |
2316 | if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } | |
2317 | ||
2318 | // We have everything, render it | |
2319 | this._sock.rQskipBytes(1 + cl_header); // shift off clt + compact length | |
2320 | data = this._sock.rQshiftBytes(cl_data); | |
2321 | this._display.imageRect(this._FBU.x, this._FBU.y, "image/" + cmode, data); | |
2322 | break; | |
2323 | case "filter": | |
2324 | var filterId = rQ[rQi + 1]; | |
2325 | if (filterId === 1) { | |
2326 | if (!handlePalette()) { return false; } | |
2327 | } else { | |
2328 | // Filter 0, Copy could be valid here, but servers don't send it as an explicit filter | |
2329 | // Filter 2, Gradient is valid but not use if jpeg is enabled | |
2330 | this._fail("Unexpected server message", | |
2331 | "Unsupported tight subencoding received, " + | |
2332 | "filter: " + filterId); | |
2333 | } | |
2334 | break; | |
2335 | case "copy": | |
2336 | if (!handleCopy()) { return false; } | |
2337 | break; | |
2338 | } | |
2339 | ||
2340 | ||
2341 | this._FBU.bytes = 0; | |
2342 | this._FBU.rects--; | |
2343 | ||
2344 | return true; | |
2345 | }, | |
2346 | ||
2347 | last_rect: function () { | |
2348 | this._FBU.rects = 0; | |
2349 | return true; | |
2350 | }, | |
2351 | ||
2352 | ExtendedDesktopSize: function () { | |
2353 | this._FBU.bytes = 1; | |
2354 | if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; } | |
2355 | ||
2356 | this._supportsSetDesktopSize = true; | |
2357 | this._setCapability("resize", true); | |
2358 | ||
2359 | var number_of_screens = this._sock.rQpeek8(); | |
2360 | ||
2361 | this._FBU.bytes = 4 + (number_of_screens * 16); | |
2362 | if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; } | |
2363 | ||
2364 | this._sock.rQskipBytes(1); // number-of-screens | |
2365 | this._sock.rQskipBytes(3); // padding | |
2366 | ||
2367 | for (var i = 0; i < number_of_screens; i += 1) { | |
2368 | // Save the id and flags of the first screen | |
2369 | if (i === 0) { | |
2370 | this._screen_id = this._sock.rQshiftBytes(4); // id | |
2371 | this._sock.rQskipBytes(2); // x-position | |
2372 | this._sock.rQskipBytes(2); // y-position | |
2373 | this._sock.rQskipBytes(2); // width | |
2374 | this._sock.rQskipBytes(2); // height | |
2375 | this._screen_flags = this._sock.rQshiftBytes(4); // flags | |
2376 | } else { | |
2377 | this._sock.rQskipBytes(16); | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | /* | |
2382 | * The x-position indicates the reason for the change: | |
2383 | * | |
2384 | * 0 - server resized on its own | |
2385 | * 1 - this client requested the resize | |
2386 | * 2 - another client requested the resize | |
2387 | */ | |
2388 | ||
2389 | // We need to handle errors when we requested the resize. | |
2390 | if (this._FBU.x === 1 && this._FBU.y !== 0) { | |
2391 | var msg = ""; | |
2392 | // The y-position indicates the status code from the server | |
2393 | switch (this._FBU.y) { | |
2394 | case 1: | |
2395 | msg = "Resize is administratively prohibited"; | |
2396 | break; | |
2397 | case 2: | |
2398 | msg = "Out of resources"; | |
2399 | break; | |
2400 | case 3: | |
2401 | msg = "Invalid screen layout"; | |
2402 | break; | |
2403 | default: | |
2404 | msg = "Unknown reason"; | |
2405 | break; | |
2406 | } | |
2407 | this._notification("Server did not accept the resize request: " | |
2408 | + msg, 'normal'); | |
2409 | } else { | |
2410 | this._resize(this._FBU.width, this._FBU.height); | |
2411 | } | |
2412 | ||
2413 | this._FBU.bytes = 0; | |
2414 | this._FBU.rects -= 1; | |
2415 | return true; | |
2416 | }, | |
2417 | ||
2418 | DesktopSize: function () { | |
2419 | this._resize(this._FBU.width, this._FBU.height); | |
2420 | this._FBU.bytes = 0; | |
2421 | this._FBU.rects -= 1; | |
2422 | return true; | |
2423 | }, | |
2424 | ||
2425 | Cursor: function () { | |
2426 | Log.Debug(">> set_cursor"); | |
2427 | var x = this._FBU.x; // hotspot-x | |
2428 | var y = this._FBU.y; // hotspot-y | |
2429 | var w = this._FBU.width; | |
2430 | var h = this._FBU.height; | |
2431 | ||
2432 | var pixelslength = w * h * 4; | |
2433 | var masklength = Math.floor((w + 7) / 8) * h; | |
2434 | ||
2435 | this._FBU.bytes = pixelslength + masklength; | |
2436 | if (this._sock.rQwait("cursor encoding", this._FBU.bytes)) { return false; } | |
2437 | ||
2438 | this._display.changeCursor(this._sock.rQshiftBytes(pixelslength), | |
2439 | this._sock.rQshiftBytes(masklength), | |
2440 | x, y, w, h); | |
2441 | ||
2442 | this._FBU.bytes = 0; | |
2443 | this._FBU.rects--; | |
2444 | ||
2445 | Log.Debug("<< set_cursor"); | |
2446 | return true; | |
2447 | }, | |
2448 | ||
2449 | QEMUExtendedKeyEvent: function () { | |
2450 | this._FBU.rects--; | |
2451 | ||
2452 | // Old Safari doesn't support creating keyboard events | |
2453 | try { | |
2454 | var keyboardEvent = document.createEvent("keyboardEvent"); | |
2455 | if (keyboardEvent.code !== undefined) { | |
2456 | this._qemuExtKeyEventSupported = true; | |
2457 | } | |
2458 | } catch (err) { | |
2459 | } | |
2460 | }, | |
2461 | }; |