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a7a89626 JM |
1 | /* |
2 | * noVNC: HTML5 VNC client | |
412d9306 | 3 | * Copyright (C) 2019 The noVNC Authors |
1d728ace | 4 | * Licensed under MPL 2.0 (see LICENSE.txt) |
a7a89626 JM |
5 | * |
6 | * See README.md for usage and integration instructions. | |
d38db74a | 7 | * |
a7a89626 JM |
8 | */ |
9 | ||
6d6f0db0 | 10 | import * as Log from './util/logging.js'; |
6d6f0db0 | 11 | import { decodeUTF8 } from './util/strings.js'; |
3b7c4741 | 12 | import { dragThreshold } from './util/browser.js'; |
e89eef94 | 13 | import EventTargetMixin from './util/eventtarget.js'; |
3ae0bb09 | 14 | import Display from "./display.js"; |
c1e2785f SM |
15 | import Keyboard from "./input/keyboard.js"; |
16 | import Mouse from "./input/mouse.js"; | |
b475eed5 | 17 | import Cursor from "./util/cursor.js"; |
3ae0bb09 | 18 | import Websock from "./websock.js"; |
3ae0bb09 SR |
19 | import DES from "./des.js"; |
20 | import KeyTable from "./input/keysym.js"; | |
21 | import XtScancode from "./input/xtscancodes.js"; | |
e17cae8f | 22 | import { encodings } from "./encodings.js"; |
e89eef94 | 23 | import "./util/polyfill.js"; |
3ae0bb09 | 24 | |
923cd220 PO |
25 | import RawDecoder from "./decoders/raw.js"; |
26 | import CopyRectDecoder from "./decoders/copyrect.js"; | |
27 | import RREDecoder from "./decoders/rre.js"; | |
28 | import HextileDecoder from "./decoders/hextile.js"; | |
29 | import TightDecoder from "./decoders/tight.js"; | |
30 | import TightPNGDecoder from "./decoders/tightpng.js"; | |
31 | ||
68e09edc | 32 | // How many seconds to wait for a disconnect to finish |
2b5f94fa | 33 | const DISCONNECT_TIMEOUT = 3; |
d7791ebb | 34 | const DEFAULT_BACKGROUND = 'rgb(40, 40, 40)'; |
68e09edc | 35 | |
0e4808bf JD |
36 | export default class RFB extends EventTargetMixin { |
37 | constructor(target, url, options) { | |
38 | if (!target) { | |
d3ed883a | 39 | throw new Error("Must specify target"); |
0e4808bf JD |
40 | } |
41 | if (!url) { | |
d3ed883a | 42 | throw new Error("Must specify URL"); |
0e4808bf JD |
43 | } |
44 | ||
45 | super(); | |
46 | ||
47 | this._target = target; | |
48 | this._url = url; | |
49 | ||
50 | // Connection details | |
51 | options = options || {}; | |
52 | this._rfb_credentials = options.credentials || {}; | |
53 | this._shared = 'shared' in options ? !!options.shared : true; | |
54 | this._repeaterID = options.repeaterID || ''; | |
c9122303 | 55 | this._wsProtocols = options.wsProtocols || []; |
0e4808bf JD |
56 | |
57 | // Internal state | |
58 | this._rfb_connection_state = ''; | |
59 | this._rfb_init_state = ''; | |
c02b18f0 | 60 | this._rfb_auth_scheme = -1; |
0e4808bf JD |
61 | this._rfb_clean_disconnect = true; |
62 | ||
63 | // Server capabilities | |
64 | this._rfb_version = 0; | |
65 | this._rfb_max_version = 3.8; | |
66 | this._rfb_tightvnc = false; | |
67 | this._rfb_xvp_ver = 0; | |
68 | ||
69 | this._fb_width = 0; | |
70 | this._fb_height = 0; | |
71 | ||
72 | this._fb_name = ""; | |
73 | ||
74 | this._capabilities = { power: false }; | |
75 | ||
76 | this._supportsFence = false; | |
77 | ||
78 | this._supportsContinuousUpdates = false; | |
79 | this._enabledContinuousUpdates = false; | |
80 | ||
81 | this._supportsSetDesktopSize = false; | |
82 | this._screen_id = 0; | |
83 | this._screen_flags = 0; | |
84 | ||
85 | this._qemuExtKeyEventSupported = false; | |
86 | ||
87 | // Internal objects | |
88 | this._sock = null; // Websock object | |
89 | this._display = null; // Display object | |
90 | this._flushing = false; // Display flushing state | |
91 | this._keyboard = null; // Keyboard input handler object | |
92 | this._mouse = null; // Mouse input handler object | |
93 | ||
94 | // Timers | |
95 | this._disconnTimer = null; // disconnection timer | |
96 | this._resizeTimeout = null; // resize rate limiting | |
97 | ||
e17cae8f | 98 | // Decoder states |
923cd220 | 99 | this._decoders = {}; |
0e4808bf JD |
100 | |
101 | this._FBU = { | |
102 | rects: 0, | |
0e4808bf JD |
103 | x: 0, |
104 | y: 0, | |
105 | width: 0, | |
106 | height: 0, | |
923cd220 | 107 | encoding: null, |
0e4808bf JD |
108 | }; |
109 | ||
110 | // Mouse state | |
111 | this._mouse_buttonMask = 0; | |
112 | this._mouse_arr = []; | |
113 | this._viewportDragging = false; | |
114 | this._viewportDragPos = {}; | |
115 | this._viewportHasMoved = false; | |
116 | ||
117 | // Bound event handlers | |
118 | this._eventHandlers = { | |
119 | focusCanvas: this._focusCanvas.bind(this), | |
120 | windowResize: this._windowResize.bind(this), | |
121 | }; | |
122 | ||
123 | // main setup | |
124 | Log.Debug(">> RFB.constructor"); | |
125 | ||
126 | // Create DOM elements | |
127 | this._screen = document.createElement('div'); | |
128 | this._screen.style.display = 'flex'; | |
129 | this._screen.style.width = '100%'; | |
130 | this._screen.style.height = '100%'; | |
131 | this._screen.style.overflow = 'auto'; | |
d7791ebb | 132 | this._screen.style.background = DEFAULT_BACKGROUND; |
0e4808bf JD |
133 | this._canvas = document.createElement('canvas'); |
134 | this._canvas.style.margin = 'auto'; | |
135 | // Some browsers add an outline on focus | |
136 | this._canvas.style.outline = 'none'; | |
137 | // IE miscalculates width without this :( | |
138 | this._canvas.style.flexShrink = '0'; | |
139 | this._canvas.width = 0; | |
140 | this._canvas.height = 0; | |
141 | this._canvas.tabIndex = -1; | |
142 | this._screen.appendChild(this._canvas); | |
45808617 | 143 | |
d1314d4b AP |
144 | // Cursor |
145 | this._cursor = new Cursor(); | |
4c38179d AP |
146 | |
147 | // XXX: TightVNC 2.8.11 sends no cursor at all until Windows changes | |
148 | // it. Result: no cursor at all until a window border or an edit field | |
149 | // is hit blindly. But there are also VNC servers that draw the cursor | |
150 | // in the framebuffer and don't send the empty local cursor. There is | |
151 | // no way to satisfy both sides. | |
152 | // | |
153 | // The spec is unclear on this "initial cursor" issue. Many other | |
154 | // viewers (TigerVNC, RealVNC, Remmina) display an arrow as the | |
155 | // initial cursor instead. | |
156 | this._cursorImage = RFB.cursors.none; | |
b475eed5 | 157 | |
923cd220 PO |
158 | // populate decoder array with objects |
159 | this._decoders[encodings.encodingRaw] = new RawDecoder(); | |
160 | this._decoders[encodings.encodingCopyRect] = new CopyRectDecoder(); | |
161 | this._decoders[encodings.encodingRRE] = new RREDecoder(); | |
162 | this._decoders[encodings.encodingHextile] = new HextileDecoder(); | |
163 | this._decoders[encodings.encodingTight] = new TightDecoder(); | |
164 | this._decoders[encodings.encodingTightPNG] = new TightPNGDecoder(); | |
0e4808bf JD |
165 | |
166 | // NB: nothing that needs explicit teardown should be done | |
167 | // before this point, since this can throw an exception | |
168 | try { | |
169 | this._display = new Display(this._canvas); | |
170 | } catch (exc) { | |
171 | Log.Error("Display exception: " + exc); | |
172 | throw exc; | |
173 | } | |
174 | this._display.onflush = this._onFlush.bind(this); | |
0e4808bf JD |
175 | |
176 | this._keyboard = new Keyboard(this._canvas); | |
177 | this._keyboard.onkeyevent = this._handleKeyEvent.bind(this); | |
178 | ||
179 | this._mouse = new Mouse(this._canvas); | |
180 | this._mouse.onmousebutton = this._handleMouseButton.bind(this); | |
181 | this._mouse.onmousemove = this._handleMouseMove.bind(this); | |
182 | ||
183 | this._sock = new Websock(); | |
b8ff5d1b PO |
184 | this._sock.on('message', () => { |
185 | this._handle_message(); | |
186 | }); | |
651c23ec | 187 | this._sock.on('open', () => { |
0e4808bf JD |
188 | if ((this._rfb_connection_state === 'connecting') && |
189 | (this._rfb_init_state === '')) { | |
190 | this._rfb_init_state = 'ProtocolVersion'; | |
191 | Log.Debug("Starting VNC handshake"); | |
192 | } else { | |
193 | this._fail("Unexpected server connection while " + | |
651c23ec | 194 | this._rfb_connection_state); |
b1dee947 | 195 | } |
651c23ec JD |
196 | }); |
197 | this._sock.on('close', (e) => { | |
0e4808bf JD |
198 | Log.Debug("WebSocket on-close event"); |
199 | let msg = ""; | |
200 | if (e.code) { | |
201 | msg = "(code: " + e.code; | |
202 | if (e.reason) { | |
203 | msg += ", reason: " + e.reason; | |
204 | } | |
205 | msg += ")"; | |
206 | } | |
207 | switch (this._rfb_connection_state) { | |
208 | case 'connecting': | |
209 | this._fail("Connection closed " + msg); | |
210 | break; | |
211 | case 'connected': | |
212 | // Handle disconnects that were initiated server-side | |
213 | this._updateConnectionState('disconnecting'); | |
214 | this._updateConnectionState('disconnected'); | |
215 | break; | |
216 | case 'disconnecting': | |
217 | // Normal disconnection path | |
218 | this._updateConnectionState('disconnected'); | |
219 | break; | |
220 | case 'disconnected': | |
221 | this._fail("Unexpected server disconnect " + | |
651c23ec | 222 | "when already disconnected " + msg); |
0e4808bf JD |
223 | break; |
224 | default: | |
225 | this._fail("Unexpected server disconnect before connecting " + | |
651c23ec | 226 | msg); |
0e4808bf JD |
227 | break; |
228 | } | |
229 | this._sock.off('close'); | |
0e4808bf | 230 | }); |
651c23ec | 231 | this._sock.on('error', e => Log.Warn("WebSocket on-error event")); |
8db09746 | 232 | |
0e4808bf JD |
233 | // Slight delay of the actual connection so that the caller has |
234 | // time to set up callbacks | |
235 | setTimeout(this._updateConnectionState.bind(this, 'connecting')); | |
ae510306 | 236 | |
0e4808bf | 237 | Log.Debug("<< RFB.constructor"); |
a7a89626 | 238 | |
0e4808bf | 239 | // ===== PROPERTIES ===== |
6d6f0db0 | 240 | |
0e4808bf JD |
241 | this.dragViewport = false; |
242 | this.focusOnClick = true; | |
a7a89626 | 243 | |
0e4808bf JD |
244 | this._viewOnly = false; |
245 | this._clipViewport = false; | |
246 | this._scaleViewport = false; | |
247 | this._resizeSession = false; | |
6aed0b4d PO |
248 | |
249 | this._showDotCursor = false; | |
250 | if (options.showDotCursor !== undefined) { | |
251 | Log.Warn("Specifying showDotCursor as a RFB constructor argument is deprecated"); | |
252 | this._showDotCursor = options.showDotCursor; | |
253 | } | |
0e4808bf JD |
254 | } |
255 | ||
256 | // ===== PROPERTIES ===== | |
257 | ||
258 | get viewOnly() { return this._viewOnly; } | |
747b4623 PO |
259 | set viewOnly(viewOnly) { |
260 | this._viewOnly = viewOnly; | |
261 | ||
262 | if (this._rfb_connection_state === "connecting" || | |
263 | this._rfb_connection_state === "connected") { | |
264 | if (viewOnly) { | |
265 | this._keyboard.ungrab(); | |
266 | this._mouse.ungrab(); | |
267 | } else { | |
268 | this._keyboard.grab(); | |
269 | this._mouse.grab(); | |
270 | } | |
271 | } | |
0e4808bf | 272 | } |
6d6f0db0 | 273 | |
0e4808bf | 274 | get capabilities() { return this._capabilities; } |
747b4623 | 275 | |
0e4808bf JD |
276 | get touchButton() { return this._mouse.touchButton; } |
277 | set touchButton(button) { this._mouse.touchButton = button; } | |
747b4623 | 278 | |
0e4808bf | 279 | get clipViewport() { return this._clipViewport; } |
9b84f516 PO |
280 | set clipViewport(viewport) { |
281 | this._clipViewport = viewport; | |
282 | this._updateClip(); | |
0e4808bf | 283 | } |
747b4623 | 284 | |
0e4808bf | 285 | get scaleViewport() { return this._scaleViewport; } |
9b84f516 PO |
286 | set scaleViewport(scale) { |
287 | this._scaleViewport = scale; | |
288 | // Scaling trumps clipping, so we may need to adjust | |
289 | // clipping when enabling or disabling scaling | |
290 | if (scale && this._clipViewport) { | |
291 | this._updateClip(); | |
292 | } | |
293 | this._updateScale(); | |
294 | if (!scale && this._clipViewport) { | |
295 | this._updateClip(); | |
296 | } | |
0e4808bf | 297 | } |
747b4623 | 298 | |
0e4808bf | 299 | get resizeSession() { return this._resizeSession; } |
9b84f516 PO |
300 | set resizeSession(resize) { |
301 | this._resizeSession = resize; | |
302 | if (resize) { | |
303 | this._requestRemoteResize(); | |
304 | } | |
0e4808bf | 305 | } |
a80aa416 | 306 | |
4c38179d AP |
307 | get showDotCursor() { return this._showDotCursor; } |
308 | set showDotCursor(show) { | |
309 | this._showDotCursor = show; | |
310 | this._refreshCursor(); | |
311 | } | |
312 | ||
d7791ebb MM |
313 | get background() { return this._screen.style.background; } |
314 | set background(cssValue) { this._screen.style.background = cssValue; } | |
315 | ||
747b4623 PO |
316 | // ===== PUBLIC METHODS ===== |
317 | ||
0e4808bf | 318 | disconnect() { |
6d6f0db0 SR |
319 | this._updateConnectionState('disconnecting'); |
320 | this._sock.off('error'); | |
321 | this._sock.off('message'); | |
322 | this._sock.off('open'); | |
0e4808bf | 323 | } |
6d6f0db0 | 324 | |
0e4808bf | 325 | sendCredentials(creds) { |
430f00d6 | 326 | this._rfb_credentials = creds; |
6d6f0db0 | 327 | setTimeout(this._init_msg.bind(this), 0); |
0e4808bf | 328 | } |
6d6f0db0 | 329 | |
0e4808bf | 330 | sendCtrlAltDel() { |
15a62695 | 331 | if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
6d6f0db0 SR |
332 | Log.Info("Sending Ctrl-Alt-Del"); |
333 | ||
94f5cf05 PO |
334 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true); |
335 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true); | |
336 | this.sendKey(KeyTable.XK_Delete, "Delete", true); | |
337 | this.sendKey(KeyTable.XK_Delete, "Delete", false); | |
338 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false); | |
339 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false); | |
0e4808bf | 340 | } |
6d6f0db0 | 341 | |
0e4808bf | 342 | machineShutdown() { |
cd523e8f | 343 | this._xvpOp(1, 2); |
0e4808bf | 344 | } |
6d6f0db0 | 345 | |
0e4808bf | 346 | machineReboot() { |
cd523e8f | 347 | this._xvpOp(1, 3); |
0e4808bf | 348 | } |
6d6f0db0 | 349 | |
0e4808bf | 350 | machineReset() { |
cd523e8f | 351 | this._xvpOp(1, 4); |
0e4808bf | 352 | } |
6d6f0db0 SR |
353 | |
354 | // Send a key press. If 'down' is not specified then send a down key | |
355 | // followed by an up key. | |
0e4808bf | 356 | sendKey(keysym, code, down) { |
15a62695 | 357 | if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
94f5cf05 PO |
358 | |
359 | if (down === undefined) { | |
360 | this.sendKey(keysym, code, true); | |
361 | this.sendKey(keysym, code, false); | |
15a62695 | 362 | return; |
94f5cf05 PO |
363 | } |
364 | ||
2b5f94fa | 365 | const scancode = XtScancode[code]; |
94f5cf05 | 366 | |
be70fe0a | 367 | if (this._qemuExtKeyEventSupported && scancode) { |
459ed008 PO |
368 | // 0 is NoSymbol |
369 | keysym = keysym || 0; | |
370 | ||
94f5cf05 PO |
371 | Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode); |
372 | ||
373 | RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode); | |
374 | } else { | |
459ed008 | 375 | if (!keysym) { |
15a62695 | 376 | return; |
459ed008 | 377 | } |
6d6f0db0 SR |
378 | Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym); |
379 | RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0); | |
6d6f0db0 | 380 | } |
0e4808bf | 381 | } |
6d6f0db0 | 382 | |
0e4808bf | 383 | focus() { |
9b84f516 | 384 | this._canvas.focus(); |
0e4808bf | 385 | } |
b9854a5c | 386 | |
0e4808bf | 387 | blur() { |
9b84f516 | 388 | this._canvas.blur(); |
0e4808bf | 389 | } |
b9854a5c | 390 | |
0e4808bf | 391 | clipboardPasteFrom(text) { |
9b84f516 PO |
392 | if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
393 | RFB.messages.clientCutText(this._sock, text); | |
0e4808bf | 394 | } |
b1dee947 | 395 | |
747b4623 | 396 | // ===== PRIVATE METHODS ===== |
b0ec6509 | 397 | |
0e4808bf | 398 | _connect() { |
6d6f0db0 | 399 | Log.Debug(">> RFB.connect"); |
b0ec6509 | 400 | |
5b4e5d01 | 401 | Log.Info("connecting to " + this._url); |
b1dee947 | 402 | |
6d6f0db0 SR |
403 | try { |
404 | // WebSocket.onopen transitions to the RFB init states | |
25b3d49d | 405 | this._sock.open(this._url, this._wsProtocols); |
6d6f0db0 SR |
406 | } catch (e) { |
407 | if (e.name === 'SyntaxError') { | |
d472f3f1 | 408 | this._fail("Invalid host or port (" + e + ")"); |
b1dee947 | 409 | } else { |
d472f3f1 | 410 | this._fail("Error when opening socket (" + e + ")"); |
159ad55d | 411 | } |
6d6f0db0 | 412 | } |
e3efeb32 | 413 | |
9b84f516 PO |
414 | // Make our elements part of the page |
415 | this._target.appendChild(this._screen); | |
416 | ||
b475eed5 | 417 | this._cursor.attach(this._canvas); |
4c38179d | 418 | this._refreshCursor(); |
b475eed5 | 419 | |
9b84f516 PO |
420 | // Monitor size changes of the screen |
421 | // FIXME: Use ResizeObserver, or hidden overflow | |
422 | window.addEventListener('resize', this._eventHandlers.windowResize); | |
423 | ||
2afda544 | 424 | // Always grab focus on some kind of click event |
9b84f516 PO |
425 | this._canvas.addEventListener("mousedown", this._eventHandlers.focusCanvas); |
426 | this._canvas.addEventListener("touchstart", this._eventHandlers.focusCanvas); | |
2afda544 | 427 | |
6d6f0db0 | 428 | Log.Debug("<< RFB.connect"); |
0e4808bf | 429 | } |
6d6f0db0 | 430 | |
0e4808bf | 431 | _disconnect() { |
6d6f0db0 | 432 | Log.Debug(">> RFB.disconnect"); |
b475eed5 | 433 | this._cursor.detach(); |
9b84f516 PO |
434 | this._canvas.removeEventListener("mousedown", this._eventHandlers.focusCanvas); |
435 | this._canvas.removeEventListener("touchstart", this._eventHandlers.focusCanvas); | |
436 | window.removeEventListener('resize', this._eventHandlers.windowResize); | |
437 | this._keyboard.ungrab(); | |
438 | this._mouse.ungrab(); | |
6d6f0db0 | 439 | this._sock.close(); |
b245ec70 SM |
440 | try { |
441 | this._target.removeChild(this._screen); | |
442 | } catch (e) { | |
443 | if (e.name === 'NotFoundError') { | |
444 | // Some cases where the initial connection fails | |
445 | // can disconnect before the _screen is created | |
446 | } else { | |
447 | throw e; | |
448 | } | |
449 | } | |
9b84f516 | 450 | clearTimeout(this._resizeTimeout); |
6d6f0db0 | 451 | Log.Debug("<< RFB.disconnect"); |
0e4808bf | 452 | } |
6d6f0db0 | 453 | |
0e4808bf | 454 | _focusCanvas(event) { |
2afda544 | 455 | // Respect earlier handlers' request to not do side-effects |
1d6ff4a3 PO |
456 | if (event.defaultPrevented) { |
457 | return; | |
458 | } | |
459 | ||
b8dfb983 | 460 | if (!this.focusOnClick) { |
1d6ff4a3 PO |
461 | return; |
462 | } | |
463 | ||
9b84f516 | 464 | this.focus(); |
0e4808bf | 465 | } |
9b84f516 | 466 | |
ce66b469 NL |
467 | _setDesktopName(name) { |
468 | this._fb_name = name; | |
469 | this.dispatchEvent(new CustomEvent( | |
470 | "desktopname", | |
471 | { detail: { name: this._fb_name } })); | |
472 | } | |
473 | ||
0e4808bf | 474 | _windowResize(event) { |
9b84f516 PO |
475 | // If the window resized then our screen element might have |
476 | // as well. Update the viewport dimensions. | |
651c23ec | 477 | window.requestAnimationFrame(() => { |
9b84f516 PO |
478 | this._updateClip(); |
479 | this._updateScale(); | |
651c23ec | 480 | }); |
9b84f516 PO |
481 | |
482 | if (this._resizeSession) { | |
483 | // Request changing the resolution of the remote display to | |
484 | // the size of the local browser viewport. | |
485 | ||
486 | // In order to not send multiple requests before the browser-resize | |
487 | // is finished we wait 0.5 seconds before sending the request. | |
488 | clearTimeout(this._resizeTimeout); | |
489 | this._resizeTimeout = setTimeout(this._requestRemoteResize.bind(this), 500); | |
490 | } | |
0e4808bf | 491 | } |
9b84f516 PO |
492 | |
493 | // Update state of clipping in Display object, and make sure the | |
494 | // configured viewport matches the current screen size | |
0e4808bf | 495 | _updateClip() { |
2b5f94fa JD |
496 | const cur_clip = this._display.clipViewport; |
497 | let new_clip = this._clipViewport; | |
9b84f516 PO |
498 | |
499 | if (this._scaleViewport) { | |
500 | // Disable viewport clipping if we are scaling | |
501 | new_clip = false; | |
502 | } | |
503 | ||
504 | if (cur_clip !== new_clip) { | |
505 | this._display.clipViewport = new_clip; | |
506 | } | |
507 | ||
508 | if (new_clip) { | |
509 | // When clipping is enabled, the screen is limited to | |
510 | // the size of the container. | |
2b5f94fa | 511 | const size = this._screenSize(); |
9b84f516 PO |
512 | this._display.viewportChangeSize(size.w, size.h); |
513 | this._fixScrollbars(); | |
514 | } | |
0e4808bf | 515 | } |
9b84f516 | 516 | |
0e4808bf | 517 | _updateScale() { |
9b84f516 PO |
518 | if (!this._scaleViewport) { |
519 | this._display.scale = 1.0; | |
520 | } else { | |
2b5f94fa | 521 | const size = this._screenSize(); |
9b84f516 PO |
522 | this._display.autoscale(size.w, size.h); |
523 | } | |
524 | this._fixScrollbars(); | |
0e4808bf | 525 | } |
9b84f516 PO |
526 | |
527 | // Requests a change of remote desktop size. This message is an extension | |
528 | // and may only be sent if we have received an ExtendedDesktopSize message | |
0e4808bf | 529 | _requestRemoteResize() { |
9b84f516 PO |
530 | clearTimeout(this._resizeTimeout); |
531 | this._resizeTimeout = null; | |
532 | ||
533 | if (!this._resizeSession || this._viewOnly || | |
534 | !this._supportsSetDesktopSize) { | |
535 | return; | |
536 | } | |
537 | ||
2b5f94fa | 538 | const size = this._screenSize(); |
ab1ace38 PO |
539 | RFB.messages.setDesktopSize(this._sock, |
540 | Math.floor(size.w), Math.floor(size.h), | |
9b84f516 PO |
541 | this._screen_id, this._screen_flags); |
542 | ||
543 | Log.Debug('Requested new desktop size: ' + | |
544 | size.w + 'x' + size.h); | |
0e4808bf | 545 | } |
9b84f516 PO |
546 | |
547 | // Gets the the size of the available screen | |
0e4808bf | 548 | _screenSize() { |
ab1ace38 PO |
549 | let r = this._screen.getBoundingClientRect(); |
550 | return { w: r.width, h: r.height }; | |
0e4808bf | 551 | } |
9b84f516 | 552 | |
0e4808bf | 553 | _fixScrollbars() { |
9b84f516 PO |
554 | // This is a hack because Chrome screws up the calculation |
555 | // for when scrollbars are needed. So to fix it we temporarily | |
556 | // toggle them off and on. | |
2b5f94fa | 557 | const orig = this._screen.style.overflow; |
9b84f516 PO |
558 | this._screen.style.overflow = 'hidden'; |
559 | // Force Chrome to recalculate the layout by asking for | |
560 | // an element's dimensions | |
561 | this._screen.getBoundingClientRect(); | |
562 | this._screen.style.overflow = orig; | |
0e4808bf | 563 | } |
2afda544 | 564 | |
6d6f0db0 SR |
565 | /* |
566 | * Connection states: | |
567 | * connecting | |
568 | * connected | |
569 | * disconnecting | |
570 | * disconnected - permanent state | |
571 | */ | |
0e4808bf | 572 | _updateConnectionState(state) { |
2b5f94fa | 573 | const oldstate = this._rfb_connection_state; |
6d6f0db0 SR |
574 | |
575 | if (state === oldstate) { | |
576 | Log.Debug("Already in state '" + state + "', ignoring"); | |
577 | return; | |
578 | } | |
579 | ||
580 | // The 'disconnected' state is permanent for each RFB object | |
581 | if (oldstate === 'disconnected') { | |
582 | Log.Error("Tried changing state of a disconnected RFB object"); | |
583 | return; | |
584 | } | |
585 | ||
586 | // Ensure proper transitions before doing anything | |
587 | switch (state) { | |
588 | case 'connected': | |
589 | if (oldstate !== 'connecting') { | |
590 | Log.Error("Bad transition to connected state, " + | |
591 | "previous connection state: " + oldstate); | |
592 | return; | |
b1dee947 | 593 | } |
6d6f0db0 | 594 | break; |
a7a89626 | 595 | |
6d6f0db0 SR |
596 | case 'disconnected': |
597 | if (oldstate !== 'disconnecting') { | |
598 | Log.Error("Bad transition to disconnected state, " + | |
599 | "previous connection state: " + oldstate); | |
600 | return; | |
601 | } | |
602 | break; | |
a7a89626 | 603 | |
6d6f0db0 SR |
604 | case 'connecting': |
605 | if (oldstate !== '') { | |
606 | Log.Error("Bad transition to connecting state, " + | |
607 | "previous connection state: " + oldstate); | |
608 | return; | |
609 | } | |
610 | break; | |
b1dee947 | 611 | |
6d6f0db0 SR |
612 | case 'disconnecting': |
613 | if (oldstate !== 'connected' && oldstate !== 'connecting') { | |
614 | Log.Error("Bad transition to disconnecting state, " + | |
615 | "previous connection state: " + oldstate); | |
616 | return; | |
617 | } | |
618 | break; | |
a679a97d | 619 | |
6d6f0db0 SR |
620 | default: |
621 | Log.Error("Unknown connection state: " + state); | |
3bb12056 | 622 | return; |
6d6f0db0 | 623 | } |
b1dee947 | 624 | |
6d6f0db0 | 625 | // State change actions |
3bb12056 | 626 | |
6d6f0db0 | 627 | this._rfb_connection_state = state; |
b2e961d4 | 628 | |
651c23ec | 629 | Log.Debug("New state '" + state + "', was '" + oldstate + "'."); |
b2e961d4 | 630 | |
6d6f0db0 SR |
631 | if (this._disconnTimer && state !== 'disconnecting') { |
632 | Log.Debug("Clearing disconnect timer"); | |
633 | clearTimeout(this._disconnTimer); | |
634 | this._disconnTimer = null; | |
3bb12056 | 635 | |
6d6f0db0 SR |
636 | // make sure we don't get a double event |
637 | this._sock.off('close'); | |
638 | } | |
b2e961d4 | 639 | |
6d6f0db0 | 640 | switch (state) { |
6d6f0db0 SR |
641 | case 'connecting': |
642 | this._connect(); | |
643 | break; | |
b2e961d4 | 644 | |
ee5cae9f | 645 | case 'connected': |
2b5f94fa | 646 | this.dispatchEvent(new CustomEvent("connect", { detail: {} })); |
ee5cae9f SM |
647 | break; |
648 | ||
6d6f0db0 SR |
649 | case 'disconnecting': |
650 | this._disconnect(); | |
b2e961d4 | 651 | |
651c23ec | 652 | this._disconnTimer = setTimeout(() => { |
d472f3f1 | 653 | Log.Error("Disconnection timed out."); |
6d6f0db0 | 654 | this._updateConnectionState('disconnected'); |
651c23ec | 655 | }, DISCONNECT_TIMEOUT * 1000); |
6d6f0db0 | 656 | break; |
ee5cae9f SM |
657 | |
658 | case 'disconnected': | |
2b5f94fa | 659 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 660 | "disconnect", { detail: |
2b5f94fa | 661 | { clean: this._rfb_clean_disconnect } })); |
ee5cae9f | 662 | break; |
6d6f0db0 | 663 | } |
0e4808bf | 664 | } |
6d6f0db0 SR |
665 | |
666 | /* Print errors and disconnect | |
667 | * | |
d472f3f1 | 668 | * The parameter 'details' is used for information that |
6d6f0db0 SR |
669 | * should be logged but not sent to the user interface. |
670 | */ | |
0e4808bf | 671 | _fail(details) { |
6d6f0db0 SR |
672 | switch (this._rfb_connection_state) { |
673 | case 'disconnecting': | |
d472f3f1 | 674 | Log.Error("Failed when disconnecting: " + details); |
6d6f0db0 SR |
675 | break; |
676 | case 'connected': | |
d472f3f1 | 677 | Log.Error("Failed while connected: " + details); |
6d6f0db0 SR |
678 | break; |
679 | case 'connecting': | |
d472f3f1 | 680 | Log.Error("Failed when connecting: " + details); |
6d6f0db0 SR |
681 | break; |
682 | default: | |
d472f3f1 | 683 | Log.Error("RFB failure: " + details); |
6d6f0db0 SR |
684 | break; |
685 | } | |
d472f3f1 | 686 | this._rfb_clean_disconnect = false; //This is sent to the UI |
6d6f0db0 SR |
687 | |
688 | // Transition to disconnected without waiting for socket to close | |
689 | this._updateConnectionState('disconnecting'); | |
690 | this._updateConnectionState('disconnected'); | |
691 | ||
692 | return false; | |
0e4808bf | 693 | } |
6d6f0db0 | 694 | |
0e4808bf | 695 | _setCapability(cap, val) { |
832be262 | 696 | this._capabilities[cap] = val; |
2b5f94fa | 697 | this.dispatchEvent(new CustomEvent("capabilities", |
0e4808bf JD |
698 | { detail: { capabilities: this._capabilities } })); |
699 | } | |
b1dee947 | 700 | |
0e4808bf | 701 | _handle_message() { |
8a189a62 | 702 | if (this._sock.rQlen === 0) { |
6d6f0db0 SR |
703 | Log.Warn("handle_message called on an empty receive queue"); |
704 | return; | |
705 | } | |
b1dee947 | 706 | |
6d6f0db0 SR |
707 | switch (this._rfb_connection_state) { |
708 | case 'disconnected': | |
709 | Log.Error("Got data while disconnected"); | |
710 | break; | |
711 | case 'connected': | |
712 | while (true) { | |
713 | if (this._flushing) { | |
714 | break; | |
715 | } | |
716 | if (!this._normal_msg()) { | |
717 | break; | |
718 | } | |
8a189a62 | 719 | if (this._sock.rQlen === 0) { |
6d6f0db0 SR |
720 | break; |
721 | } | |
722 | } | |
723 | break; | |
724 | default: | |
725 | this._init_msg(); | |
726 | break; | |
727 | } | |
0e4808bf | 728 | } |
3bb12056 | 729 | |
0e4808bf | 730 | _handleKeyEvent(keysym, code, down) { |
d0703d1b | 731 | this.sendKey(keysym, code, down); |
0e4808bf | 732 | } |
06a9ef0c | 733 | |
0e4808bf | 734 | _handleMouseButton(x, y, down, bmask) { |
6d6f0db0 SR |
735 | if (down) { |
736 | this._mouse_buttonMask |= bmask; | |
737 | } else { | |
270bdbd7 | 738 | this._mouse_buttonMask &= ~bmask; |
6d6f0db0 | 739 | } |
a7127fee | 740 | |
0460e5fd | 741 | if (this.dragViewport) { |
6d6f0db0 SR |
742 | if (down && !this._viewportDragging) { |
743 | this._viewportDragging = true; | |
744 | this._viewportDragPos = {'x': x, 'y': y}; | |
898cd32c | 745 | this._viewportHasMoved = false; |
a7127fee | 746 | |
6d6f0db0 | 747 | // Skip sending mouse events |
b1dee947 | 748 | return; |
6d6f0db0 SR |
749 | } else { |
750 | this._viewportDragging = false; | |
8db09746 | 751 | |
898cd32c PO |
752 | // If we actually performed a drag then we are done |
753 | // here and should not send any mouse events | |
754 | if (this._viewportHasMoved) { | |
755 | return; | |
6d6f0db0 | 756 | } |
898cd32c PO |
757 | |
758 | // Otherwise we treat this as a mouse click event. | |
759 | // Send the button down event here, as the button up | |
760 | // event is sent at the end of this function. | |
761 | RFB.messages.pointerEvent(this._sock, | |
762 | this._display.absX(x), | |
763 | this._display.absY(y), | |
764 | bmask); | |
b1dee947 | 765 | } |
6d6f0db0 | 766 | } |
8db09746 | 767 | |
747b4623 | 768 | if (this._viewOnly) { return; } // View only, skip mouse events |
8f06673a | 769 | |
6d6f0db0 SR |
770 | if (this._rfb_connection_state !== 'connected') { return; } |
771 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); | |
0e4808bf | 772 | } |
8db09746 | 773 | |
0e4808bf | 774 | _handleMouseMove(x, y) { |
6d6f0db0 | 775 | if (this._viewportDragging) { |
2b5f94fa JD |
776 | const deltaX = this._viewportDragPos.x - x; |
777 | const deltaY = this._viewportDragPos.y - y; | |
8db09746 | 778 | |
6d6f0db0 SR |
779 | if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold || |
780 | Math.abs(deltaY) > dragThreshold)) { | |
781 | this._viewportHasMoved = true; | |
27e77d46 | 782 | |
6d6f0db0 SR |
783 | this._viewportDragPos = {'x': x, 'y': y}; |
784 | this._display.viewportChangePos(deltaX, deltaY); | |
b50f3406 | 785 | } |
8db09746 | 786 | |
6d6f0db0 SR |
787 | // Skip sending mouse events |
788 | return; | |
789 | } | |
b1dee947 | 790 | |
747b4623 | 791 | if (this._viewOnly) { return; } // View only, skip mouse events |
b1dee947 | 792 | |
6d6f0db0 SR |
793 | if (this._rfb_connection_state !== 'connected') { return; } |
794 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); | |
0e4808bf | 795 | } |
b1dee947 | 796 | |
6d6f0db0 | 797 | // Message Handlers |
27e77d46 | 798 | |
0e4808bf | 799 | _negotiate_protocol_version() { |
c13df5ae PO |
800 | if (this._sock.rQwait("version", 12)) { |
801 | return false; | |
6d6f0db0 | 802 | } |
32df3fdb | 803 | |
2b5f94fa | 804 | const sversion = this._sock.rQshiftStr(12).substr(4, 7); |
6d6f0db0 | 805 | Log.Info("Server ProtocolVersion: " + sversion); |
2b5f94fa | 806 | let is_repeater = 0; |
6d6f0db0 SR |
807 | switch (sversion) { |
808 | case "000.000": // UltraVNC repeater | |
809 | is_repeater = 1; | |
810 | break; | |
811 | case "003.003": | |
812 | case "003.006": // UltraVNC | |
813 | case "003.889": // Apple Remote Desktop | |
814 | this._rfb_version = 3.3; | |
815 | break; | |
816 | case "003.007": | |
817 | this._rfb_version = 3.7; | |
818 | break; | |
819 | case "003.008": | |
820 | case "004.000": // Intel AMT KVM | |
821 | case "004.001": // RealVNC 4.6 | |
822 | case "005.000": // RealVNC 5.3 | |
823 | this._rfb_version = 3.8; | |
824 | break; | |
825 | default: | |
d472f3f1 | 826 | return this._fail("Invalid server version " + sversion); |
6d6f0db0 | 827 | } |
8db09746 | 828 | |
6d6f0db0 | 829 | if (is_repeater) { |
2b5f94fa | 830 | let repeaterID = "ID:" + this._repeaterID; |
6d6f0db0 SR |
831 | while (repeaterID.length < 250) { |
832 | repeaterID += "\0"; | |
b1dee947 | 833 | } |
6d6f0db0 SR |
834 | this._sock.send_string(repeaterID); |
835 | return true; | |
836 | } | |
b1dee947 | 837 | |
6d6f0db0 SR |
838 | if (this._rfb_version > this._rfb_max_version) { |
839 | this._rfb_version = this._rfb_max_version; | |
840 | } | |
b1dee947 | 841 | |
2b5f94fa | 842 | const cversion = "00" + parseInt(this._rfb_version, 10) + |
6d6f0db0 SR |
843 | ".00" + ((this._rfb_version * 10) % 10); |
844 | this._sock.send_string("RFB " + cversion + "\n"); | |
845 | Log.Debug('Sent ProtocolVersion: ' + cversion); | |
b1dee947 | 846 | |
6d6f0db0 | 847 | this._rfb_init_state = 'Security'; |
0e4808bf | 848 | } |
b1dee947 | 849 | |
0e4808bf | 850 | _negotiate_security() { |
6d6f0db0 SR |
851 | // Polyfill since IE and PhantomJS doesn't have |
852 | // TypedArray.includes() | |
853 | function includes(item, array) { | |
2b5f94fa | 854 | for (let i = 0; i < array.length; i++) { |
6d6f0db0 SR |
855 | if (array[i] === item) { |
856 | return true; | |
857 | } | |
b1dee947 | 858 | } |
6d6f0db0 SR |
859 | return false; |
860 | } | |
b1dee947 | 861 | |
6d6f0db0 SR |
862 | if (this._rfb_version >= 3.7) { |
863 | // Server sends supported list, client decides | |
2b5f94fa | 864 | const num_types = this._sock.rQshift8(); |
6d6f0db0 | 865 | if (this._sock.rQwait("security type", num_types, 1)) { return false; } |
b1dee947 | 866 | |
6d6f0db0 | 867 | if (num_types === 0) { |
3bb15d4a PO |
868 | this._rfb_init_state = "SecurityReason"; |
869 | this._security_context = "no security types"; | |
870 | this._security_status = 1; | |
871 | return this._init_msg(); | |
6d6f0db0 SR |
872 | } |
873 | ||
2b5f94fa | 874 | const types = this._sock.rQshiftBytes(num_types); |
6d6f0db0 SR |
875 | Log.Debug("Server security types: " + types); |
876 | ||
877 | // Look for each auth in preferred order | |
6d6f0db0 SR |
878 | if (includes(1, types)) { |
879 | this._rfb_auth_scheme = 1; // None | |
880 | } else if (includes(22, types)) { | |
881 | this._rfb_auth_scheme = 22; // XVP | |
882 | } else if (includes(16, types)) { | |
883 | this._rfb_auth_scheme = 16; // Tight | |
884 | } else if (includes(2, types)) { | |
885 | this._rfb_auth_scheme = 2; // VNC Auth | |
886 | } else { | |
d472f3f1 | 887 | return this._fail("Unsupported security types (types: " + types + ")"); |
8db09746 | 888 | } |
b1dee947 | 889 | |
6d6f0db0 SR |
890 | this._sock.send([this._rfb_auth_scheme]); |
891 | } else { | |
892 | // Server decides | |
893 | if (this._sock.rQwait("security scheme", 4)) { return false; } | |
894 | this._rfb_auth_scheme = this._sock.rQshift32(); | |
3bb15d4a PO |
895 | |
896 | if (this._rfb_auth_scheme == 0) { | |
897 | this._rfb_init_state = "SecurityReason"; | |
898 | this._security_context = "authentication scheme"; | |
899 | this._security_status = 1; | |
900 | return this._init_msg(); | |
901 | } | |
6d6f0db0 | 902 | } |
b1dee947 | 903 | |
6d6f0db0 SR |
904 | this._rfb_init_state = 'Authentication'; |
905 | Log.Debug('Authenticating using scheme: ' + this._rfb_auth_scheme); | |
b1dee947 | 906 | |
6d6f0db0 | 907 | return this._init_msg(); // jump to authentication |
0e4808bf | 908 | } |
b1dee947 | 909 | |
3bb15d4a | 910 | _handle_security_reason() { |
d472f3f1 SM |
911 | if (this._sock.rQwait("reason length", 4)) { |
912 | return false; | |
913 | } | |
2b5f94fa | 914 | const strlen = this._sock.rQshift32(); |
d472f3f1 SM |
915 | let reason = ""; |
916 | ||
917 | if (strlen > 0) { | |
3bb15d4a | 918 | if (this._sock.rQwait("reason", strlen, 4)) { return false; } |
d472f3f1 SM |
919 | reason = this._sock.rQshiftStr(strlen); |
920 | } | |
921 | ||
922 | if (reason !== "") { | |
2b5f94fa | 923 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 924 | "securityfailure", |
3bb15d4a PO |
925 | { detail: { status: this._security_status, |
926 | reason: reason } })); | |
d472f3f1 | 927 | |
3bb15d4a PO |
928 | return this._fail("Security negotiation failed on " + |
929 | this._security_context + | |
d472f3f1 SM |
930 | " (reason: " + reason + ")"); |
931 | } else { | |
2b5f94fa | 932 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 933 | "securityfailure", |
3bb15d4a | 934 | { detail: { status: this._security_status } })); |
d472f3f1 | 935 | |
3bb15d4a PO |
936 | return this._fail("Security negotiation failed on " + |
937 | this._security_context); | |
d472f3f1 | 938 | } |
0e4808bf | 939 | } |
d472f3f1 | 940 | |
6d6f0db0 | 941 | // authentication |
0e4808bf | 942 | _negotiate_xvp_auth() { |
430f00d6 PO |
943 | if (!this._rfb_credentials.username || |
944 | !this._rfb_credentials.password || | |
945 | !this._rfb_credentials.target) { | |
2b5f94fa JD |
946 | this.dispatchEvent(new CustomEvent( |
947 | "credentialsrequired", | |
948 | { detail: { types: ["username", "password", "target"] } })); | |
7b536961 | 949 | return false; |
6d6f0db0 | 950 | } |
0ee5ca6e | 951 | |
2b5f94fa | 952 | const xvp_auth_str = String.fromCharCode(this._rfb_credentials.username.length) + |
430f00d6 PO |
953 | String.fromCharCode(this._rfb_credentials.target.length) + |
954 | this._rfb_credentials.username + | |
955 | this._rfb_credentials.target; | |
6d6f0db0 | 956 | this._sock.send_string(xvp_auth_str); |
6d6f0db0 SR |
957 | this._rfb_auth_scheme = 2; |
958 | return this._negotiate_authentication(); | |
0e4808bf | 959 | } |
6d6f0db0 | 960 | |
0e4808bf | 961 | _negotiate_std_vnc_auth() { |
abfe5b7a SM |
962 | if (this._sock.rQwait("auth challenge", 16)) { return false; } |
963 | ||
430f00d6 | 964 | if (!this._rfb_credentials.password) { |
2b5f94fa JD |
965 | this.dispatchEvent(new CustomEvent( |
966 | "credentialsrequired", | |
967 | { detail: { types: ["password"] } })); | |
6d6f0db0 SR |
968 | return false; |
969 | } | |
b1dee947 | 970 | |
6d6f0db0 | 971 | // TODO(directxman12): make genDES not require an Array |
2b5f94fa JD |
972 | const challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16)); |
973 | const response = RFB.genDES(this._rfb_credentials.password, challenge); | |
6d6f0db0 SR |
974 | this._sock.send(response); |
975 | this._rfb_init_state = "SecurityResult"; | |
976 | return true; | |
0e4808bf | 977 | } |
6d6f0db0 | 978 | |
0e4808bf | 979 | _negotiate_tight_tunnels(numTunnels) { |
2b5f94fa | 980 | const clientSupportedTunnelTypes = { |
6d6f0db0 SR |
981 | 0: { vendor: 'TGHT', signature: 'NOTUNNEL' } |
982 | }; | |
2b5f94fa | 983 | const serverSupportedTunnelTypes = {}; |
6d6f0db0 | 984 | // receive tunnel capabilities |
2b5f94fa JD |
985 | for (let i = 0; i < numTunnels; i++) { |
986 | const cap_code = this._sock.rQshift32(); | |
987 | const cap_vendor = this._sock.rQshiftStr(4); | |
988 | const cap_signature = this._sock.rQshiftStr(8); | |
6d6f0db0 SR |
989 | serverSupportedTunnelTypes[cap_code] = { vendor: cap_vendor, signature: cap_signature }; |
990 | } | |
991 | ||
e6bad200 PO |
992 | Log.Debug("Server Tight tunnel types: " + serverSupportedTunnelTypes); |
993 | ||
8f47bd29 PO |
994 | // Siemens touch panels have a VNC server that supports NOTUNNEL, |
995 | // but forgets to advertise it. Try to detect such servers by | |
996 | // looking for their custom tunnel type. | |
997 | if (serverSupportedTunnelTypes[1] && | |
998 | (serverSupportedTunnelTypes[1].vendor === "SICR") && | |
999 | (serverSupportedTunnelTypes[1].signature === "SCHANNEL")) { | |
1000 | Log.Debug("Detected Siemens server. Assuming NOTUNNEL support."); | |
1001 | serverSupportedTunnelTypes[0] = { vendor: 'TGHT', signature: 'NOTUNNEL' }; | |
1002 | } | |
1003 | ||
6d6f0db0 SR |
1004 | // choose the notunnel type |
1005 | if (serverSupportedTunnelTypes[0]) { | |
1006 | if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor || | |
1007 | serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) { | |
d472f3f1 | 1008 | return this._fail("Client's tunnel type had the incorrect " + |
6d6f0db0 | 1009 | "vendor or signature"); |
b1dee947 | 1010 | } |
e6bad200 | 1011 | Log.Debug("Selected tunnel type: " + clientSupportedTunnelTypes[0]); |
6d6f0db0 SR |
1012 | this._sock.send([0, 0, 0, 0]); // use NOTUNNEL |
1013 | return false; // wait until we receive the sub auth count to continue | |
1014 | } else { | |
d472f3f1 | 1015 | return this._fail("Server wanted tunnels, but doesn't support " + |
6d6f0db0 SR |
1016 | "the notunnel type"); |
1017 | } | |
0e4808bf | 1018 | } |
b1dee947 | 1019 | |
0e4808bf | 1020 | _negotiate_tight_auth() { |
6d6f0db0 SR |
1021 | if (!this._rfb_tightvnc) { // first pass, do the tunnel negotiation |
1022 | if (this._sock.rQwait("num tunnels", 4)) { return false; } | |
2b5f94fa | 1023 | const numTunnels = this._sock.rQshift32(); |
6d6f0db0 | 1024 | if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; } |
c00ee156 | 1025 | |
6d6f0db0 | 1026 | this._rfb_tightvnc = true; |
b1dee947 | 1027 | |
6d6f0db0 SR |
1028 | if (numTunnels > 0) { |
1029 | this._negotiate_tight_tunnels(numTunnels); | |
1030 | return false; // wait until we receive the sub auth to continue | |
b1dee947 | 1031 | } |
6d6f0db0 | 1032 | } |
b1dee947 | 1033 | |
6d6f0db0 SR |
1034 | // second pass, do the sub-auth negotiation |
1035 | if (this._sock.rQwait("sub auth count", 4)) { return false; } | |
2b5f94fa | 1036 | const subAuthCount = this._sock.rQshift32(); |
6d6f0db0 SR |
1037 | if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected |
1038 | this._rfb_init_state = 'SecurityResult'; | |
1039 | return true; | |
1040 | } | |
b1dee947 | 1041 | |
6d6f0db0 | 1042 | if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; } |
b1dee947 | 1043 | |
2b5f94fa | 1044 | const clientSupportedTypes = { |
6d6f0db0 SR |
1045 | 'STDVNOAUTH__': 1, |
1046 | 'STDVVNCAUTH_': 2 | |
1047 | }; | |
b1dee947 | 1048 | |
2b5f94fa | 1049 | const serverSupportedTypes = []; |
95eb681b | 1050 | |
2b5f94fa | 1051 | for (let i = 0; i < subAuthCount; i++) { |
8727f598 | 1052 | this._sock.rQshift32(); // capNum |
2b5f94fa | 1053 | const capabilities = this._sock.rQshiftStr(12); |
6d6f0db0 SR |
1054 | serverSupportedTypes.push(capabilities); |
1055 | } | |
d86cc2d9 | 1056 | |
e6bad200 PO |
1057 | Log.Debug("Server Tight authentication types: " + serverSupportedTypes); |
1058 | ||
2b5f94fa | 1059 | for (let authType in clientSupportedTypes) { |
6d6f0db0 SR |
1060 | if (serverSupportedTypes.indexOf(authType) != -1) { |
1061 | this._sock.send([0, 0, 0, clientSupportedTypes[authType]]); | |
e6bad200 | 1062 | Log.Debug("Selected authentication type: " + authType); |
d86cc2d9 | 1063 | |
6d6f0db0 SR |
1064 | switch (authType) { |
1065 | case 'STDVNOAUTH__': // no auth | |
1066 | this._rfb_init_state = 'SecurityResult'; | |
1067 | return true; | |
1068 | case 'STDVVNCAUTH_': // VNC auth | |
1069 | this._rfb_auth_scheme = 2; | |
1070 | return this._init_msg(); | |
1071 | default: | |
d472f3f1 SM |
1072 | return this._fail("Unsupported tiny auth scheme " + |
1073 | "(scheme: " + authType + ")"); | |
b1dee947 SR |
1074 | } |
1075 | } | |
6d6f0db0 | 1076 | } |
b1dee947 | 1077 | |
d472f3f1 | 1078 | return this._fail("No supported sub-auth types!"); |
0e4808bf | 1079 | } |
6d6f0db0 | 1080 | |
0e4808bf | 1081 | _negotiate_authentication() { |
6d6f0db0 | 1082 | switch (this._rfb_auth_scheme) { |
6d6f0db0 SR |
1083 | case 1: // no auth |
1084 | if (this._rfb_version >= 3.8) { | |
1085 | this._rfb_init_state = 'SecurityResult'; | |
1086 | return true; | |
1087 | } | |
1088 | this._rfb_init_state = 'ClientInitialisation'; | |
1089 | return this._init_msg(); | |
95eb681b | 1090 | |
6d6f0db0 SR |
1091 | case 22: // XVP auth |
1092 | return this._negotiate_xvp_auth(); | |
d86cc2d9 | 1093 | |
6d6f0db0 SR |
1094 | case 2: // VNC authentication |
1095 | return this._negotiate_std_vnc_auth(); | |
d86cc2d9 | 1096 | |
6d6f0db0 SR |
1097 | case 16: // TightVNC Security Type |
1098 | return this._negotiate_tight_auth(); | |
d86cc2d9 | 1099 | |
6d6f0db0 | 1100 | default: |
d472f3f1 SM |
1101 | return this._fail("Unsupported auth scheme (scheme: " + |
1102 | this._rfb_auth_scheme + ")"); | |
6d6f0db0 | 1103 | } |
0e4808bf | 1104 | } |
6d6f0db0 | 1105 | |
0e4808bf | 1106 | _handle_security_result() { |
6d6f0db0 | 1107 | if (this._sock.rQwait('VNC auth response ', 4)) { return false; } |
d472f3f1 | 1108 | |
2b5f94fa | 1109 | const status = this._sock.rQshift32(); |
d472f3f1 SM |
1110 | |
1111 | if (status === 0) { // OK | |
1112 | this._rfb_init_state = 'ClientInitialisation'; | |
1113 | Log.Debug('Authentication OK'); | |
1114 | return this._init_msg(); | |
1115 | } else { | |
1116 | if (this._rfb_version >= 3.8) { | |
3bb15d4a PO |
1117 | this._rfb_init_state = "SecurityReason"; |
1118 | this._security_context = "security result"; | |
1119 | this._security_status = status; | |
1120 | return this._init_msg(); | |
d472f3f1 | 1121 | } else { |
2b5f94fa JD |
1122 | this.dispatchEvent(new CustomEvent( |
1123 | "securityfailure", | |
1124 | { detail: { status: status } })); | |
d472f3f1 SM |
1125 | |
1126 | return this._fail("Security handshake failed"); | |
1127 | } | |
6d6f0db0 | 1128 | } |
0e4808bf | 1129 | } |
6d6f0db0 | 1130 | |
0e4808bf | 1131 | _negotiate_server_init() { |
6d6f0db0 SR |
1132 | if (this._sock.rQwait("server initialization", 24)) { return false; } |
1133 | ||
1134 | /* Screen size */ | |
2b5f94fa JD |
1135 | const width = this._sock.rQshift16(); |
1136 | const height = this._sock.rQshift16(); | |
6d6f0db0 SR |
1137 | |
1138 | /* PIXEL_FORMAT */ | |
2b5f94fa JD |
1139 | const bpp = this._sock.rQshift8(); |
1140 | const depth = this._sock.rQshift8(); | |
1141 | const big_endian = this._sock.rQshift8(); | |
1142 | const true_color = this._sock.rQshift8(); | |
1143 | ||
1144 | const red_max = this._sock.rQshift16(); | |
1145 | const green_max = this._sock.rQshift16(); | |
1146 | const blue_max = this._sock.rQshift16(); | |
1147 | const red_shift = this._sock.rQshift8(); | |
1148 | const green_shift = this._sock.rQshift8(); | |
1149 | const blue_shift = this._sock.rQshift8(); | |
6d6f0db0 SR |
1150 | this._sock.rQskipBytes(3); // padding |
1151 | ||
1152 | // NB(directxman12): we don't want to call any callbacks or print messages until | |
1153 | // *after* we're past the point where we could backtrack | |
1154 | ||
1155 | /* Connection name/title */ | |
2b5f94fa | 1156 | const name_length = this._sock.rQshift32(); |
6d6f0db0 | 1157 | if (this._sock.rQwait('server init name', name_length, 24)) { return false; } |
ce66b469 | 1158 | let name = decodeUTF8(this._sock.rQshiftStr(name_length)); |
6d6f0db0 SR |
1159 | |
1160 | if (this._rfb_tightvnc) { | |
1161 | if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; } | |
1162 | // In TightVNC mode, ServerInit message is extended | |
2b5f94fa JD |
1163 | const numServerMessages = this._sock.rQshift16(); |
1164 | const numClientMessages = this._sock.rQshift16(); | |
1165 | const numEncodings = this._sock.rQshift16(); | |
6d6f0db0 SR |
1166 | this._sock.rQskipBytes(2); // padding |
1167 | ||
2b5f94fa | 1168 | const totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16; |
6d6f0db0 SR |
1169 | if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + name_length)) { return false; } |
1170 | ||
1171 | // we don't actually do anything with the capability information that TIGHT sends, | |
1172 | // so we just skip the all of this. | |
1173 | ||
1174 | // TIGHT server message capabilities | |
1175 | this._sock.rQskipBytes(16 * numServerMessages); | |
1176 | ||
1177 | // TIGHT client message capabilities | |
1178 | this._sock.rQskipBytes(16 * numClientMessages); | |
1179 | ||
1180 | // TIGHT encoding capabilities | |
1181 | this._sock.rQskipBytes(16 * numEncodings); | |
1182 | } | |
d86cc2d9 | 1183 | |
6d6f0db0 SR |
1184 | // NB(directxman12): these are down here so that we don't run them multiple times |
1185 | // if we backtrack | |
91d5c625 | 1186 | Log.Info("Screen: " + width + "x" + height + |
6d6f0db0 SR |
1187 | ", bpp: " + bpp + ", depth: " + depth + |
1188 | ", big_endian: " + big_endian + | |
1189 | ", true_color: " + true_color + | |
1190 | ", red_max: " + red_max + | |
1191 | ", green_max: " + green_max + | |
1192 | ", blue_max: " + blue_max + | |
1193 | ", red_shift: " + red_shift + | |
1194 | ", green_shift: " + green_shift + | |
1195 | ", blue_shift: " + blue_shift); | |
1196 | ||
6d6f0db0 | 1197 | // we're past the point where we could backtrack, so it's safe to call this |
ce66b469 | 1198 | this._setDesktopName(name); |
91d5c625 | 1199 | this._resize(width, height); |
b1dee947 | 1200 | |
747b4623 PO |
1201 | if (!this._viewOnly) { this._keyboard.grab(); } |
1202 | if (!this._viewOnly) { this._mouse.grab(); } | |
b1dee947 | 1203 | |
5a5f5ada PO |
1204 | this._fb_depth = 24; |
1205 | ||
1206 | if (this._fb_name === "Intel(r) AMT KVM") { | |
1207 | Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode."); | |
1208 | this._fb_depth = 8; | |
1209 | } | |
1210 | ||
1211 | RFB.messages.pixelFormat(this._sock, this._fb_depth, true); | |
49a81837 | 1212 | this._sendEncodings(); |
6d6f0db0 SR |
1213 | RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fb_width, this._fb_height); |
1214 | ||
6d6f0db0 SR |
1215 | this._updateConnectionState('connected'); |
1216 | return true; | |
0e4808bf | 1217 | } |
6d6f0db0 | 1218 | |
0e4808bf | 1219 | _sendEncodings() { |
2b5f94fa | 1220 | const encs = []; |
49a81837 PO |
1221 | |
1222 | // In preference order | |
1223 | encs.push(encodings.encodingCopyRect); | |
5a5f5ada PO |
1224 | // Only supported with full depth support |
1225 | if (this._fb_depth == 24) { | |
1226 | encs.push(encodings.encodingTight); | |
2c813a33 | 1227 | encs.push(encodings.encodingTightPNG); |
5a5f5ada PO |
1228 | encs.push(encodings.encodingHextile); |
1229 | encs.push(encodings.encodingRRE); | |
1230 | } | |
49a81837 PO |
1231 | encs.push(encodings.encodingRaw); |
1232 | ||
1233 | // Psuedo-encoding settings | |
49a81837 PO |
1234 | encs.push(encodings.pseudoEncodingQualityLevel0 + 6); |
1235 | encs.push(encodings.pseudoEncodingCompressLevel0 + 2); | |
1236 | ||
1237 | encs.push(encodings.pseudoEncodingDesktopSize); | |
1238 | encs.push(encodings.pseudoEncodingLastRect); | |
1239 | encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent); | |
1240 | encs.push(encodings.pseudoEncodingExtendedDesktopSize); | |
1241 | encs.push(encodings.pseudoEncodingXvp); | |
1242 | encs.push(encodings.pseudoEncodingFence); | |
1243 | encs.push(encodings.pseudoEncodingContinuousUpdates); | |
ce66b469 | 1244 | encs.push(encodings.pseudoEncodingDesktopName); |
49a81837 | 1245 | |
baa4f23e | 1246 | if (this._fb_depth == 24) { |
296ba51f | 1247 | encs.push(encodings.pseudoEncodingVMwareCursor); |
49a81837 PO |
1248 | encs.push(encodings.pseudoEncodingCursor); |
1249 | } | |
1250 | ||
1251 | RFB.messages.clientEncodings(this._sock, encs); | |
0e4808bf | 1252 | } |
49a81837 | 1253 | |
6d6f0db0 SR |
1254 | /* RFB protocol initialization states: |
1255 | * ProtocolVersion | |
1256 | * Security | |
1257 | * Authentication | |
1258 | * SecurityResult | |
1259 | * ClientInitialization - not triggered by server message | |
1260 | * ServerInitialization | |
1261 | */ | |
0e4808bf | 1262 | _init_msg() { |
6d6f0db0 SR |
1263 | switch (this._rfb_init_state) { |
1264 | case 'ProtocolVersion': | |
1265 | return this._negotiate_protocol_version(); | |
1266 | ||
1267 | case 'Security': | |
1268 | return this._negotiate_security(); | |
1269 | ||
1270 | case 'Authentication': | |
1271 | return this._negotiate_authentication(); | |
1272 | ||
1273 | case 'SecurityResult': | |
1274 | return this._handle_security_result(); | |
1275 | ||
3bb15d4a PO |
1276 | case 'SecurityReason': |
1277 | return this._handle_security_reason(); | |
1278 | ||
6d6f0db0 SR |
1279 | case 'ClientInitialisation': |
1280 | this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation | |
1281 | this._rfb_init_state = 'ServerInitialisation'; | |
1282 | return true; | |
b1dee947 | 1283 | |
6d6f0db0 SR |
1284 | case 'ServerInitialisation': |
1285 | return this._negotiate_server_init(); | |
b1dee947 | 1286 | |
6d6f0db0 | 1287 | default: |
d472f3f1 SM |
1288 | return this._fail("Unknown init state (state: " + |
1289 | this._rfb_init_state + ")"); | |
6d6f0db0 | 1290 | } |
0e4808bf | 1291 | } |
b1dee947 | 1292 | |
0e4808bf | 1293 | _handle_set_colour_map_msg() { |
6d6f0db0 | 1294 | Log.Debug("SetColorMapEntries"); |
b1dee947 | 1295 | |
d472f3f1 | 1296 | return this._fail("Unexpected SetColorMapEntries message"); |
0e4808bf | 1297 | } |
b1dee947 | 1298 | |
0e4808bf | 1299 | _handle_server_cut_text() { |
6d6f0db0 | 1300 | Log.Debug("ServerCutText"); |
b1dee947 | 1301 | |
6d6f0db0 SR |
1302 | if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; } |
1303 | this._sock.rQskipBytes(3); // Padding | |
2b5f94fa | 1304 | const length = this._sock.rQshift32(); |
6d6f0db0 | 1305 | if (this._sock.rQwait("ServerCutText", length, 8)) { return false; } |
b1dee947 | 1306 | |
2b5f94fa | 1307 | const text = this._sock.rQshiftStr(length); |
b4ff032e | 1308 | |
747b4623 | 1309 | if (this._viewOnly) { return true; } |
b4ff032e | 1310 | |
2b5f94fa JD |
1311 | this.dispatchEvent(new CustomEvent( |
1312 | "clipboard", | |
1313 | { detail: { text: text } })); | |
b1dee947 | 1314 | |
6d6f0db0 | 1315 | return true; |
0e4808bf | 1316 | } |
b1dee947 | 1317 | |
0e4808bf | 1318 | _handle_server_fence_msg() { |
6d6f0db0 SR |
1319 | if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; } |
1320 | this._sock.rQskipBytes(3); // Padding | |
2b5f94fa JD |
1321 | let flags = this._sock.rQshift32(); |
1322 | let length = this._sock.rQshift8(); | |
b1dee947 | 1323 | |
6d6f0db0 | 1324 | if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; } |
b1dee947 | 1325 | |
6d6f0db0 SR |
1326 | if (length > 64) { |
1327 | Log.Warn("Bad payload length (" + length + ") in fence response"); | |
1328 | length = 64; | |
1329 | } | |
4e0c36dd | 1330 | |
2b5f94fa | 1331 | const payload = this._sock.rQshiftStr(length); |
b1dee947 | 1332 | |
6d6f0db0 | 1333 | this._supportsFence = true; |
b1dee947 | 1334 | |
6d6f0db0 SR |
1335 | /* |
1336 | * Fence flags | |
1337 | * | |
1338 | * (1<<0) - BlockBefore | |
1339 | * (1<<1) - BlockAfter | |
1340 | * (1<<2) - SyncNext | |
1341 | * (1<<31) - Request | |
1342 | */ | |
b1dee947 | 1343 | |
6d6f0db0 | 1344 | if (!(flags & (1<<31))) { |
d472f3f1 | 1345 | return this._fail("Unexpected fence response"); |
6d6f0db0 | 1346 | } |
b1dee947 | 1347 | |
6d6f0db0 SR |
1348 | // Filter out unsupported flags |
1349 | // FIXME: support syncNext | |
1350 | flags &= (1<<0) | (1<<1); | |
b1dee947 | 1351 | |
6d6f0db0 SR |
1352 | // BlockBefore and BlockAfter are automatically handled by |
1353 | // the fact that we process each incoming message | |
1354 | // synchronuosly. | |
1355 | RFB.messages.clientFence(this._sock, flags, payload); | |
f78a652e | 1356 | |
6d6f0db0 | 1357 | return true; |
0e4808bf | 1358 | } |
b1dee947 | 1359 | |
0e4808bf | 1360 | _handle_xvp_msg() { |
6d6f0db0 | 1361 | if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; } |
8a189a62 | 1362 | this._sock.rQskipBytes(1); // Padding |
2b5f94fa JD |
1363 | const xvp_ver = this._sock.rQshift8(); |
1364 | const xvp_msg = this._sock.rQshift8(); | |
b1dee947 | 1365 | |
6d6f0db0 SR |
1366 | switch (xvp_msg) { |
1367 | case 0: // XVP_FAIL | |
5b20d338 | 1368 | Log.Error("XVP Operation Failed"); |
6d6f0db0 SR |
1369 | break; |
1370 | case 1: // XVP_INIT | |
1371 | this._rfb_xvp_ver = xvp_ver; | |
1372 | Log.Info("XVP extensions enabled (version " + this._rfb_xvp_ver + ")"); | |
832be262 | 1373 | this._setCapability("power", true); |
6d6f0db0 SR |
1374 | break; |
1375 | default: | |
d472f3f1 | 1376 | this._fail("Illegal server XVP message (msg: " + xvp_msg + ")"); |
6d6f0db0 SR |
1377 | break; |
1378 | } | |
b1dee947 | 1379 | |
6d6f0db0 | 1380 | return true; |
0e4808bf | 1381 | } |
3df13262 | 1382 | |
0e4808bf | 1383 | _normal_msg() { |
2b5f94fa | 1384 | let msg_type; |
6d6f0db0 SR |
1385 | if (this._FBU.rects > 0) { |
1386 | msg_type = 0; | |
1387 | } else { | |
1388 | msg_type = this._sock.rQshift8(); | |
1389 | } | |
76a86ff5 | 1390 | |
2b5f94fa | 1391 | let first, ret; |
6d6f0db0 SR |
1392 | switch (msg_type) { |
1393 | case 0: // FramebufferUpdate | |
2b5f94fa | 1394 | ret = this._framebufferUpdate(); |
6d6f0db0 SR |
1395 | if (ret && !this._enabledContinuousUpdates) { |
1396 | RFB.messages.fbUpdateRequest(this._sock, true, 0, 0, | |
1397 | this._fb_width, this._fb_height); | |
1398 | } | |
1399 | return ret; | |
3df13262 | 1400 | |
6d6f0db0 SR |
1401 | case 1: // SetColorMapEntries |
1402 | return this._handle_set_colour_map_msg(); | |
1403 | ||
1404 | case 2: // Bell | |
1405 | Log.Debug("Bell"); | |
2b5f94fa | 1406 | this.dispatchEvent(new CustomEvent( |
4a16dc51 | 1407 | "bell", |
2b5f94fa | 1408 | { detail: {} })); |
6d6f0db0 SR |
1409 | return true; |
1410 | ||
1411 | case 3: // ServerCutText | |
1412 | return this._handle_server_cut_text(); | |
1413 | ||
1414 | case 150: // EndOfContinuousUpdates | |
2b5f94fa | 1415 | first = !this._supportsContinuousUpdates; |
6d6f0db0 SR |
1416 | this._supportsContinuousUpdates = true; |
1417 | this._enabledContinuousUpdates = false; | |
1418 | if (first) { | |
1419 | this._enabledContinuousUpdates = true; | |
1420 | this._updateContinuousUpdates(); | |
1421 | Log.Info("Enabling continuous updates."); | |
1422 | } else { | |
1423 | // FIXME: We need to send a framebufferupdaterequest here | |
1424 | // if we add support for turning off continuous updates | |
1425 | } | |
1426 | return true; | |
3df13262 | 1427 | |
6d6f0db0 SR |
1428 | case 248: // ServerFence |
1429 | return this._handle_server_fence_msg(); | |
3df13262 | 1430 | |
6d6f0db0 SR |
1431 | case 250: // XVP |
1432 | return this._handle_xvp_msg(); | |
3df13262 | 1433 | |
6d6f0db0 | 1434 | default: |
d472f3f1 | 1435 | this._fail("Unexpected server message (type " + msg_type + ")"); |
6d6f0db0 SR |
1436 | Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30)); |
1437 | return true; | |
1438 | } | |
0e4808bf | 1439 | } |
3df13262 | 1440 | |
0e4808bf | 1441 | _onFlush() { |
6d6f0db0 SR |
1442 | this._flushing = false; |
1443 | // Resume processing | |
8a189a62 | 1444 | if (this._sock.rQlen > 0) { |
6d6f0db0 SR |
1445 | this._handle_message(); |
1446 | } | |
0e4808bf | 1447 | } |
3df13262 | 1448 | |
0e4808bf | 1449 | _framebufferUpdate() { |
6d6f0db0 SR |
1450 | if (this._FBU.rects === 0) { |
1451 | if (this._sock.rQwait("FBU header", 3, 1)) { return false; } | |
8a189a62 | 1452 | this._sock.rQskipBytes(1); // Padding |
6d6f0db0 | 1453 | this._FBU.rects = this._sock.rQshift16(); |
b1dee947 | 1454 | |
6d6f0db0 SR |
1455 | // Make sure the previous frame is fully rendered first |
1456 | // to avoid building up an excessive queue | |
1457 | if (this._display.pending()) { | |
1458 | this._flushing = true; | |
1459 | this._display.flush(); | |
1460 | return false; | |
1461 | } | |
1462 | } | |
b1dee947 | 1463 | |
6d6f0db0 | 1464 | while (this._FBU.rects > 0) { |
923cd220 | 1465 | if (this._FBU.encoding === null) { |
6d6f0db0 SR |
1466 | if (this._sock.rQwait("rect header", 12)) { return false; } |
1467 | /* New FramebufferUpdate */ | |
b1dee947 | 1468 | |
2b5f94fa | 1469 | const hdr = this._sock.rQshiftBytes(12); |
6d6f0db0 SR |
1470 | this._FBU.x = (hdr[0] << 8) + hdr[1]; |
1471 | this._FBU.y = (hdr[2] << 8) + hdr[3]; | |
1472 | this._FBU.width = (hdr[4] << 8) + hdr[5]; | |
1473 | this._FBU.height = (hdr[6] << 8) + hdr[7]; | |
1474 | this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) + | |
1475 | (hdr[10] << 8) + hdr[11], 10); | |
6d6f0db0 | 1476 | } |
b1dee947 | 1477 | |
11309f32 PO |
1478 | if (!this._handleRect()) { |
1479 | return false; | |
6d6f0db0 | 1480 | } |
b1dee947 | 1481 | |
11309f32 | 1482 | this._FBU.rects--; |
923cd220 | 1483 | this._FBU.encoding = null; |
6d6f0db0 | 1484 | } |
76a86ff5 | 1485 | |
6d6f0db0 | 1486 | this._display.flip(); |
3df13262 | 1487 | |
6d6f0db0 | 1488 | return true; // We finished this FBU |
0e4808bf | 1489 | } |
b1dee947 | 1490 | |
11309f32 PO |
1491 | _handleRect() { |
1492 | switch (this._FBU.encoding) { | |
1493 | case encodings.pseudoEncodingLastRect: | |
1494 | this._FBU.rects = 1; // Will be decreased when we return | |
1495 | return true; | |
b1dee947 | 1496 | |
296ba51f NL |
1497 | case encodings.pseudoEncodingVMwareCursor: |
1498 | return this._handleVMwareCursor(); | |
1499 | ||
11309f32 PO |
1500 | case encodings.pseudoEncodingCursor: |
1501 | return this._handleCursor(); | |
d9ca5e5b | 1502 | |
11309f32 PO |
1503 | case encodings.pseudoEncodingQEMUExtendedKeyEvent: |
1504 | // Old Safari doesn't support creating keyboard events | |
1505 | try { | |
1506 | const keyboardEvent = document.createEvent("keyboardEvent"); | |
1507 | if (keyboardEvent.code !== undefined) { | |
1508 | this._qemuExtKeyEventSupported = true; | |
1509 | } | |
1510 | } catch (err) { | |
1511 | // Do nothing | |
d9ca5e5b | 1512 | } |
11309f32 PO |
1513 | return true; |
1514 | ||
ce66b469 NL |
1515 | case encodings.pseudoEncodingDesktopName: |
1516 | return this._handleDesktopName(); | |
1517 | ||
11309f32 PO |
1518 | case encodings.pseudoEncodingDesktopSize: |
1519 | this._resize(this._FBU.width, this._FBU.height); | |
1520 | return true; | |
1521 | ||
1522 | case encodings.pseudoEncodingExtendedDesktopSize: | |
1523 | return this._handleExtendedDesktopSize(); | |
1524 | ||
1525 | default: | |
1526 | return this._handleDataRect(); | |
1527 | } | |
1528 | } | |
1529 | ||
296ba51f NL |
1530 | _handleVMwareCursor() { |
1531 | const hotx = this._FBU.x; // hotspot-x | |
1532 | const hoty = this._FBU.y; // hotspot-y | |
1533 | const w = this._FBU.width; | |
1534 | const h = this._FBU.height; | |
1535 | if (this._sock.rQwait("VMware cursor encoding", 1)) { | |
1536 | return false; | |
1537 | } | |
1538 | ||
1539 | const cursor_type = this._sock.rQshift8(); | |
1540 | ||
1541 | this._sock.rQshift8(); //Padding | |
1542 | ||
1543 | let rgba; | |
1544 | const bytesPerPixel = 4; | |
1545 | ||
1546 | //Classic cursor | |
1547 | if (cursor_type == 0) { | |
1548 | //Used to filter away unimportant bits. | |
1549 | //OR is used for correct conversion in js. | |
1550 | const PIXEL_MASK = 0xffffff00 | 0; | |
1551 | rgba = new Array(w * h * bytesPerPixel); | |
1552 | ||
1553 | if (this._sock.rQwait("VMware cursor classic encoding", | |
1554 | (w * h * bytesPerPixel) * 2, 2)) { | |
1555 | return false; | |
1556 | } | |
1557 | ||
1558 | let and_mask = new Array(w * h); | |
1559 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
1560 | and_mask[pixel] = this._sock.rQshift32(); | |
1561 | } | |
1562 | ||
1563 | let xor_mask = new Array(w * h); | |
1564 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
1565 | xor_mask[pixel] = this._sock.rQshift32(); | |
1566 | } | |
1567 | ||
1568 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
1569 | if (and_mask[pixel] == 0) { | |
1570 | //Fully opaque pixel | |
1571 | let bgr = xor_mask[pixel]; | |
1572 | let r = bgr >> 8 & 0xff; | |
1573 | let g = bgr >> 16 & 0xff; | |
1574 | let b = bgr >> 24 & 0xff; | |
1575 | ||
1576 | rgba[(pixel * bytesPerPixel) ] = r; //r | |
1577 | rgba[(pixel * bytesPerPixel) + 1 ] = g; //g | |
1578 | rgba[(pixel * bytesPerPixel) + 2 ] = b; //b | |
1579 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; //a | |
1580 | ||
1581 | } else if ((and_mask[pixel] & PIXEL_MASK) == | |
1582 | PIXEL_MASK) { | |
1583 | //Only screen value matters, no mouse colouring | |
1584 | if (xor_mask[pixel] == 0) { | |
1585 | //Transparent pixel | |
1586 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
1587 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
1588 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
1589 | rgba[(pixel * bytesPerPixel) + 3 ] = 0x00; | |
1590 | ||
1591 | } else if ((xor_mask[pixel] & PIXEL_MASK) == | |
1592 | PIXEL_MASK) { | |
1593 | //Inverted pixel, not supported in browsers. | |
1594 | //Fully opaque instead. | |
1595 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
1596 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
1597 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
1598 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
1599 | ||
1600 | } else { | |
1601 | //Unhandled xor_mask | |
1602 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
1603 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
1604 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
1605 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
1606 | } | |
1607 | ||
1608 | } else { | |
1609 | //Unhandled and_mask | |
1610 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
1611 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
1612 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
1613 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | //Alpha cursor. | |
1618 | } else if (cursor_type == 1) { | |
1619 | if (this._sock.rQwait("VMware cursor alpha encoding", | |
1620 | (w * h * 4), 2)) { | |
1621 | return false; | |
1622 | } | |
1623 | ||
1624 | rgba = new Array(w * h * bytesPerPixel); | |
1625 | ||
1626 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
1627 | let data = this._sock.rQshift32(); | |
1628 | ||
1629 | rgba[(pixel * 4) ] = data >> 8 & 0xff; //r | |
1630 | rgba[(pixel * 4) + 1 ] = data >> 16 & 0xff; //g | |
1631 | rgba[(pixel * 4) + 2 ] = data >> 24 & 0xff; //b | |
1632 | rgba[(pixel * 4) + 3 ] = data & 0xff; //a | |
1633 | } | |
1634 | ||
1635 | } else { | |
1636 | Log.Warn("The given cursor type is not supported: " | |
1637 | + cursor_type + " given."); | |
1638 | return false; | |
1639 | } | |
1640 | ||
1641 | this._updateCursor(rgba, hotx, hoty, w, h); | |
1642 | ||
1643 | return true; | |
1644 | } | |
1645 | ||
11309f32 | 1646 | _handleCursor() { |
679535ec PO |
1647 | const hotx = this._FBU.x; // hotspot-x |
1648 | const hoty = this._FBU.y; // hotspot-y | |
11309f32 PO |
1649 | const w = this._FBU.width; |
1650 | const h = this._FBU.height; | |
1651 | ||
1652 | const pixelslength = w * h * 4; | |
679535ec | 1653 | const masklength = Math.ceil(w / 8) * h; |
11309f32 | 1654 | |
923cd220 PO |
1655 | let bytes = pixelslength + masklength; |
1656 | if (this._sock.rQwait("cursor encoding", bytes)) { | |
11309f32 PO |
1657 | return false; |
1658 | } | |
1659 | ||
679535ec PO |
1660 | // Decode from BGRX pixels + bit mask to RGBA |
1661 | const pixels = this._sock.rQshiftBytes(pixelslength); | |
1662 | const mask = this._sock.rQshiftBytes(masklength); | |
1663 | let rgba = new Uint8Array(w * h * 4); | |
1664 | ||
1665 | let pix_idx = 0; | |
1666 | for (let y = 0; y < h; y++) { | |
1667 | for (let x = 0; x < w; x++) { | |
1668 | let mask_idx = y * Math.ceil(w / 8) + Math.floor(x / 8); | |
1669 | let alpha = (mask[mask_idx] << (x % 8)) & 0x80 ? 255 : 0; | |
1670 | rgba[pix_idx ] = pixels[pix_idx + 2]; | |
1671 | rgba[pix_idx + 1] = pixels[pix_idx + 1]; | |
1672 | rgba[pix_idx + 2] = pixels[pix_idx]; | |
1673 | rgba[pix_idx + 3] = alpha; | |
1674 | pix_idx += 4; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | this._updateCursor(rgba, hotx, hoty, w, h); | |
11309f32 | 1679 | |
11309f32 PO |
1680 | return true; |
1681 | } | |
1682 | ||
ce66b469 NL |
1683 | _handleDesktopName() { |
1684 | if (this._sock.rQwait("DesktopName", 4)) { | |
1685 | return false; | |
1686 | } | |
1687 | ||
1688 | let length = this._sock.rQshift32(); | |
1689 | ||
1690 | if (this._sock.rQwait("DesktopName", length, 4)) { | |
1691 | return false; | |
1692 | } | |
1693 | ||
1694 | let name = this._sock.rQshiftStr(length); | |
1695 | name = decodeUTF8(name); | |
1696 | ||
1697 | this._setDesktopName(name); | |
1698 | ||
1699 | return true; | |
1700 | } | |
1701 | ||
11309f32 | 1702 | _handleExtendedDesktopSize() { |
923cd220 | 1703 | if (this._sock.rQwait("ExtendedDesktopSize", 4)) { |
11309f32 PO |
1704 | return false; |
1705 | } | |
1706 | ||
1707 | const number_of_screens = this._sock.rQpeek8(); | |
1708 | ||
923cd220 PO |
1709 | let bytes = 4 + (number_of_screens * 16); |
1710 | if (this._sock.rQwait("ExtendedDesktopSize", bytes)) { | |
11309f32 PO |
1711 | return false; |
1712 | } | |
1713 | ||
1714 | const firstUpdate = !this._supportsSetDesktopSize; | |
1715 | this._supportsSetDesktopSize = true; | |
1716 | ||
1717 | // Normally we only apply the current resize mode after a | |
1718 | // window resize event. However there is no such trigger on the | |
1719 | // initial connect. And we don't know if the server supports | |
1720 | // resizing until we've gotten here. | |
1721 | if (firstUpdate) { | |
1722 | this._requestRemoteResize(); | |
1723 | } | |
1724 | ||
1725 | this._sock.rQskipBytes(1); // number-of-screens | |
1726 | this._sock.rQskipBytes(3); // padding | |
1727 | ||
1728 | for (let i = 0; i < number_of_screens; i += 1) { | |
1729 | // Save the id and flags of the first screen | |
1730 | if (i === 0) { | |
1731 | this._screen_id = this._sock.rQshiftBytes(4); // id | |
1732 | this._sock.rQskipBytes(2); // x-position | |
1733 | this._sock.rQskipBytes(2); // y-position | |
1734 | this._sock.rQskipBytes(2); // width | |
1735 | this._sock.rQskipBytes(2); // height | |
1736 | this._screen_flags = this._sock.rQshiftBytes(4); // flags | |
1737 | } else { | |
1738 | this._sock.rQskipBytes(16); | |
b1dee947 | 1739 | } |
11309f32 | 1740 | } |
b1dee947 | 1741 | |
11309f32 PO |
1742 | /* |
1743 | * The x-position indicates the reason for the change: | |
1744 | * | |
1745 | * 0 - server resized on its own | |
1746 | * 1 - this client requested the resize | |
1747 | * 2 - another client requested the resize | |
1748 | */ | |
1749 | ||
1750 | // We need to handle errors when we requested the resize. | |
1751 | if (this._FBU.x === 1 && this._FBU.y !== 0) { | |
1752 | let msg = ""; | |
1753 | // The y-position indicates the status code from the server | |
1754 | switch (this._FBU.y) { | |
9881899e PO |
1755 | case 1: |
1756 | msg = "Resize is administratively prohibited"; | |
1757 | break; | |
1758 | case 2: | |
1759 | msg = "Out of resources"; | |
1760 | break; | |
1761 | case 3: | |
1762 | msg = "Invalid screen layout"; | |
1763 | break; | |
1764 | default: | |
1765 | msg = "Unknown reason"; | |
1766 | break; | |
11309f32 PO |
1767 | } |
1768 | Log.Warn("Server did not accept the resize request: " | |
1769 | + msg); | |
1770 | } else { | |
1771 | this._resize(this._FBU.width, this._FBU.height); | |
6d6f0db0 | 1772 | } |
b1dee947 | 1773 | |
11309f32 PO |
1774 | return true; |
1775 | } | |
b1dee947 | 1776 | |
11309f32 | 1777 | _handleDataRect() { |
923cd220 PO |
1778 | let decoder = this._decoders[this._FBU.encoding]; |
1779 | if (!decoder) { | |
11309f32 PO |
1780 | this._fail("Unsupported encoding (encoding: " + |
1781 | this._FBU.encoding + ")"); | |
1782 | return false; | |
1783 | } | |
1784 | ||
923cd220 PO |
1785 | try { |
1786 | return decoder.decodeRect(this._FBU.x, this._FBU.y, | |
1787 | this._FBU.width, this._FBU.height, | |
1788 | this._sock, this._display, | |
1789 | this._fb_depth); | |
1790 | } catch (err) { | |
1791 | this._fail("Error decoding rect: " + err); | |
1792 | return false; | |
1793 | } | |
0e4808bf | 1794 | } |
b1dee947 | 1795 | |
0e4808bf | 1796 | _updateContinuousUpdates() { |
6d6f0db0 | 1797 | if (!this._enabledContinuousUpdates) { return; } |
b1dee947 | 1798 | |
6d6f0db0 SR |
1799 | RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0, |
1800 | this._fb_width, this._fb_height); | |
0e4808bf | 1801 | } |
91d5c625 | 1802 | |
0e4808bf | 1803 | _resize(width, height) { |
91d5c625 PO |
1804 | this._fb_width = width; |
1805 | this._fb_height = height; | |
1806 | ||
91d5c625 | 1807 | this._display.resize(this._fb_width, this._fb_height); |
e89eef94 | 1808 | |
9b84f516 PO |
1809 | // Adjust the visible viewport based on the new dimensions |
1810 | this._updateClip(); | |
1811 | this._updateScale(); | |
91d5c625 | 1812 | |
91d5c625 | 1813 | this._updateContinuousUpdates(); |
0e4808bf | 1814 | } |
8db09746 | 1815 | |
0e4808bf | 1816 | _xvpOp(ver, op) { |
cd523e8f PO |
1817 | if (this._rfb_xvp_ver < ver) { return; } |
1818 | Log.Info("Sending XVP operation " + op + " (version " + ver + ")"); | |
1819 | RFB.messages.xvpOp(this._sock, ver, op); | |
0e4808bf | 1820 | } |
76a86ff5 | 1821 | |
d1314d4b AP |
1822 | _updateCursor(rgba, hotx, hoty, w, h) { |
1823 | this._cursorImage = { | |
1824 | rgbaPixels: rgba, | |
1825 | hotx: hotx, hoty: hoty, w: w, h: h, | |
1826 | }; | |
1827 | this._refreshCursor(); | |
1828 | } | |
1829 | ||
4c38179d AP |
1830 | _shouldShowDotCursor() { |
1831 | // Called when this._cursorImage is updated | |
1832 | if (!this._showDotCursor) { | |
1833 | // User does not want to see the dot, so... | |
1834 | return false; | |
1835 | } | |
1836 | ||
1837 | // The dot should not be shown if the cursor is already visible, | |
1838 | // i.e. contains at least one not-fully-transparent pixel. | |
1839 | // So iterate through all alpha bytes in rgba and stop at the | |
1840 | // first non-zero. | |
1841 | for (let i = 3; i < this._cursorImage.rgbaPixels.length; i += 4) { | |
1842 | if (this._cursorImage.rgbaPixels[i]) { | |
1843 | return false; | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | // At this point, we know that the cursor is fully transparent, and | |
1848 | // the user wants to see the dot instead of this. | |
1849 | return true; | |
1850 | } | |
1851 | ||
d1314d4b | 1852 | _refreshCursor() { |
1f2bb528 | 1853 | if (this._rfb_connection_state !== 'connected') { return; } |
4c38179d AP |
1854 | const image = this._shouldShowDotCursor() ? RFB.cursors.dot : this._cursorImage; |
1855 | this._cursor.change(image.rgbaPixels, | |
1856 | image.hotx, image.hoty, | |
1857 | image.w, image.h | |
d1314d4b AP |
1858 | ); |
1859 | } | |
1860 | ||
0e4808bf | 1861 | static genDES(password, challenge) { |
0505214c JD |
1862 | const passwordChars = password.split('').map(c => c.charCodeAt(0)); |
1863 | return (new DES(passwordChars)).encrypt(challenge); | |
0e4808bf JD |
1864 | } |
1865 | } | |
76a86ff5 | 1866 | |
6d6f0db0 SR |
1867 | // Class Methods |
1868 | RFB.messages = { | |
0e4808bf | 1869 | keyEvent(sock, keysym, down) { |
2b5f94fa JD |
1870 | const buff = sock._sQ; |
1871 | const offset = sock._sQlen; | |
8db09746 | 1872 | |
6d6f0db0 SR |
1873 | buff[offset] = 4; // msg-type |
1874 | buff[offset + 1] = down; | |
b1dee947 | 1875 | |
6d6f0db0 SR |
1876 | buff[offset + 2] = 0; |
1877 | buff[offset + 3] = 0; | |
fb49f91b | 1878 | |
6d6f0db0 SR |
1879 | buff[offset + 4] = (keysym >> 24); |
1880 | buff[offset + 5] = (keysym >> 16); | |
1881 | buff[offset + 6] = (keysym >> 8); | |
1882 | buff[offset + 7] = keysym; | |
b1dee947 | 1883 | |
6d6f0db0 SR |
1884 | sock._sQlen += 8; |
1885 | sock.flush(); | |
1886 | }, | |
ef1e8bab | 1887 | |
0e4808bf | 1888 | QEMUExtendedKeyEvent(sock, keysym, down, keycode) { |
6d6f0db0 | 1889 | function getRFBkeycode(xt_scancode) { |
2b5f94fa JD |
1890 | const upperByte = (keycode >> 8); |
1891 | const lowerByte = (keycode & 0x00ff); | |
6d6f0db0 | 1892 | if (upperByte === 0xe0 && lowerByte < 0x7f) { |
2b5f94fa | 1893 | return lowerByte | 0x80; |
ef1e8bab | 1894 | } |
6d6f0db0 | 1895 | return xt_scancode; |
ef1e8bab | 1896 | } |
b1dee947 | 1897 | |
2b5f94fa JD |
1898 | const buff = sock._sQ; |
1899 | const offset = sock._sQlen; | |
8f06673a | 1900 | |
6d6f0db0 SR |
1901 | buff[offset] = 255; // msg-type |
1902 | buff[offset + 1] = 0; // sub msg-type | |
8f06673a | 1903 | |
6d6f0db0 SR |
1904 | buff[offset + 2] = (down >> 8); |
1905 | buff[offset + 3] = down; | |
8f06673a | 1906 | |
6d6f0db0 SR |
1907 | buff[offset + 4] = (keysym >> 24); |
1908 | buff[offset + 5] = (keysym >> 16); | |
1909 | buff[offset + 6] = (keysym >> 8); | |
1910 | buff[offset + 7] = keysym; | |
8f06673a | 1911 | |
2b5f94fa | 1912 | const RFBkeycode = getRFBkeycode(keycode); |
8f06673a | 1913 | |
6d6f0db0 SR |
1914 | buff[offset + 8] = (RFBkeycode >> 24); |
1915 | buff[offset + 9] = (RFBkeycode >> 16); | |
1916 | buff[offset + 10] = (RFBkeycode >> 8); | |
1917 | buff[offset + 11] = RFBkeycode; | |
8f06673a | 1918 | |
6d6f0db0 SR |
1919 | sock._sQlen += 12; |
1920 | sock.flush(); | |
1921 | }, | |
8f06673a | 1922 | |
0e4808bf | 1923 | pointerEvent(sock, x, y, mask) { |
2b5f94fa JD |
1924 | const buff = sock._sQ; |
1925 | const offset = sock._sQlen; | |
8f06673a | 1926 | |
6d6f0db0 | 1927 | buff[offset] = 5; // msg-type |
9ff86fb7 | 1928 | |
6d6f0db0 | 1929 | buff[offset + 1] = mask; |
9ff86fb7 | 1930 | |
6d6f0db0 SR |
1931 | buff[offset + 2] = x >> 8; |
1932 | buff[offset + 3] = x; | |
9ff86fb7 | 1933 | |
6d6f0db0 SR |
1934 | buff[offset + 4] = y >> 8; |
1935 | buff[offset + 5] = y; | |
9ff86fb7 | 1936 | |
6d6f0db0 SR |
1937 | sock._sQlen += 6; |
1938 | sock.flush(); | |
1939 | }, | |
9ff86fb7 | 1940 | |
6d6f0db0 | 1941 | // TODO(directxman12): make this unicode compatible? |
0e4808bf | 1942 | clientCutText(sock, text) { |
2b5f94fa JD |
1943 | const buff = sock._sQ; |
1944 | const offset = sock._sQlen; | |
b1dee947 | 1945 | |
6d6f0db0 | 1946 | buff[offset] = 6; // msg-type |
9ff86fb7 | 1947 | |
6d6f0db0 SR |
1948 | buff[offset + 1] = 0; // padding |
1949 | buff[offset + 2] = 0; // padding | |
1950 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 1951 | |
0e4808bf | 1952 | let length = text.length; |
9ff86fb7 | 1953 | |
2bb8b28d SM |
1954 | buff[offset + 4] = length >> 24; |
1955 | buff[offset + 5] = length >> 16; | |
1956 | buff[offset + 6] = length >> 8; | |
1957 | buff[offset + 7] = length; | |
9ff86fb7 | 1958 | |
2bb8b28d | 1959 | sock._sQlen += 8; |
9ff86fb7 | 1960 | |
2bb8b28d SM |
1961 | // We have to keep track of from where in the text we begin creating the |
1962 | // buffer for the flush in the next iteration. | |
1963 | let textOffset = 0; | |
1964 | ||
1965 | let remaining = length; | |
1966 | while (remaining > 0) { | |
1967 | ||
0e4808bf | 1968 | let flushSize = Math.min(remaining, (sock._sQbufferSize - sock._sQlen)); |
2bb8b28d | 1969 | for (let i = 0; i < flushSize; i++) { |
2b5f94fa | 1970 | buff[sock._sQlen + i] = text.charCodeAt(textOffset + i); |
2bb8b28d SM |
1971 | } |
1972 | ||
1973 | sock._sQlen += flushSize; | |
1974 | sock.flush(); | |
1975 | ||
1976 | remaining -= flushSize; | |
1977 | textOffset += flushSize; | |
1978 | } | |
6d6f0db0 SR |
1979 | }, |
1980 | ||
0e4808bf | 1981 | setDesktopSize(sock, width, height, id, flags) { |
2b5f94fa JD |
1982 | const buff = sock._sQ; |
1983 | const offset = sock._sQlen; | |
6d6f0db0 SR |
1984 | |
1985 | buff[offset] = 251; // msg-type | |
1986 | buff[offset + 1] = 0; // padding | |
1987 | buff[offset + 2] = width >> 8; // width | |
1988 | buff[offset + 3] = width; | |
1989 | buff[offset + 4] = height >> 8; // height | |
1990 | buff[offset + 5] = height; | |
1991 | ||
1992 | buff[offset + 6] = 1; // number-of-screens | |
1993 | buff[offset + 7] = 0; // padding | |
1994 | ||
1995 | // screen array | |
1996 | buff[offset + 8] = id >> 24; // id | |
1997 | buff[offset + 9] = id >> 16; | |
1998 | buff[offset + 10] = id >> 8; | |
1999 | buff[offset + 11] = id; | |
2000 | buff[offset + 12] = 0; // x-position | |
2001 | buff[offset + 13] = 0; | |
2002 | buff[offset + 14] = 0; // y-position | |
2003 | buff[offset + 15] = 0; | |
2004 | buff[offset + 16] = width >> 8; // width | |
2005 | buff[offset + 17] = width; | |
2006 | buff[offset + 18] = height >> 8; // height | |
2007 | buff[offset + 19] = height; | |
2008 | buff[offset + 20] = flags >> 24; // flags | |
2009 | buff[offset + 21] = flags >> 16; | |
2010 | buff[offset + 22] = flags >> 8; | |
2011 | buff[offset + 23] = flags; | |
2012 | ||
2013 | sock._sQlen += 24; | |
2014 | sock.flush(); | |
2015 | }, | |
2016 | ||
0e4808bf | 2017 | clientFence(sock, flags, payload) { |
2b5f94fa JD |
2018 | const buff = sock._sQ; |
2019 | const offset = sock._sQlen; | |
6d6f0db0 SR |
2020 | |
2021 | buff[offset] = 248; // msg-type | |
2022 | ||
2023 | buff[offset + 1] = 0; // padding | |
2024 | buff[offset + 2] = 0; // padding | |
2025 | buff[offset + 3] = 0; // padding | |
2026 | ||
2027 | buff[offset + 4] = flags >> 24; // flags | |
2028 | buff[offset + 5] = flags >> 16; | |
2029 | buff[offset + 6] = flags >> 8; | |
2030 | buff[offset + 7] = flags; | |
2031 | ||
2b5f94fa | 2032 | const n = payload.length; |
6d6f0db0 SR |
2033 | |
2034 | buff[offset + 8] = n; // length | |
2035 | ||
2b5f94fa | 2036 | for (let i = 0; i < n; i++) { |
6d6f0db0 SR |
2037 | buff[offset + 9 + i] = payload.charCodeAt(i); |
2038 | } | |
a7a89626 | 2039 | |
6d6f0db0 SR |
2040 | sock._sQlen += 9 + n; |
2041 | sock.flush(); | |
2042 | }, | |
3df13262 | 2043 | |
0e4808bf | 2044 | enableContinuousUpdates(sock, enable, x, y, width, height) { |
2b5f94fa JD |
2045 | const buff = sock._sQ; |
2046 | const offset = sock._sQlen; | |
3df13262 | 2047 | |
6d6f0db0 SR |
2048 | buff[offset] = 150; // msg-type |
2049 | buff[offset + 1] = enable; // enable-flag | |
76a86ff5 | 2050 | |
6d6f0db0 SR |
2051 | buff[offset + 2] = x >> 8; // x |
2052 | buff[offset + 3] = x; | |
2053 | buff[offset + 4] = y >> 8; // y | |
2054 | buff[offset + 5] = y; | |
2055 | buff[offset + 6] = width >> 8; // width | |
2056 | buff[offset + 7] = width; | |
2057 | buff[offset + 8] = height >> 8; // height | |
2058 | buff[offset + 9] = height; | |
76a86ff5 | 2059 | |
6d6f0db0 SR |
2060 | sock._sQlen += 10; |
2061 | sock.flush(); | |
2062 | }, | |
76a86ff5 | 2063 | |
0e4808bf | 2064 | pixelFormat(sock, depth, true_color) { |
2b5f94fa JD |
2065 | const buff = sock._sQ; |
2066 | const offset = sock._sQlen; | |
ae116051 | 2067 | |
2b5f94fa | 2068 | let bpp; |
5a5f5ada PO |
2069 | |
2070 | if (depth > 16) { | |
2071 | bpp = 32; | |
2072 | } else if (depth > 8) { | |
2073 | bpp = 16; | |
2074 | } else { | |
2075 | bpp = 8; | |
2076 | } | |
2077 | ||
2b5f94fa | 2078 | const bits = Math.floor(depth/3); |
5a5f5ada | 2079 | |
6d6f0db0 | 2080 | buff[offset] = 0; // msg-type |
9ff86fb7 | 2081 | |
6d6f0db0 SR |
2082 | buff[offset + 1] = 0; // padding |
2083 | buff[offset + 2] = 0; // padding | |
2084 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 2085 | |
5a5f5ada PO |
2086 | buff[offset + 4] = bpp; // bits-per-pixel |
2087 | buff[offset + 5] = depth; // depth | |
6d6f0db0 SR |
2088 | buff[offset + 6] = 0; // little-endian |
2089 | buff[offset + 7] = true_color ? 1 : 0; // true-color | |
9ff86fb7 | 2090 | |
6d6f0db0 | 2091 | buff[offset + 8] = 0; // red-max |
5a5f5ada | 2092 | buff[offset + 9] = (1 << bits) - 1; // red-max |
9ff86fb7 | 2093 | |
6d6f0db0 | 2094 | buff[offset + 10] = 0; // green-max |
5a5f5ada | 2095 | buff[offset + 11] = (1 << bits) - 1; // green-max |
9ff86fb7 | 2096 | |
6d6f0db0 | 2097 | buff[offset + 12] = 0; // blue-max |
5a5f5ada | 2098 | buff[offset + 13] = (1 << bits) - 1; // blue-max |
9ff86fb7 | 2099 | |
5a5f5ada PO |
2100 | buff[offset + 14] = bits * 2; // red-shift |
2101 | buff[offset + 15] = bits * 1; // green-shift | |
2102 | buff[offset + 16] = bits * 0; // blue-shift | |
9ff86fb7 | 2103 | |
6d6f0db0 SR |
2104 | buff[offset + 17] = 0; // padding |
2105 | buff[offset + 18] = 0; // padding | |
2106 | buff[offset + 19] = 0; // padding | |
9ff86fb7 | 2107 | |
6d6f0db0 SR |
2108 | sock._sQlen += 20; |
2109 | sock.flush(); | |
2110 | }, | |
9ff86fb7 | 2111 | |
0e4808bf | 2112 | clientEncodings(sock, encodings) { |
2b5f94fa JD |
2113 | const buff = sock._sQ; |
2114 | const offset = sock._sQlen; | |
b1dee947 | 2115 | |
6d6f0db0 SR |
2116 | buff[offset] = 2; // msg-type |
2117 | buff[offset + 1] = 0; // padding | |
b1dee947 | 2118 | |
49a81837 PO |
2119 | buff[offset + 2] = encodings.length >> 8; |
2120 | buff[offset + 3] = encodings.length; | |
9ff86fb7 | 2121 | |
2b5f94fa JD |
2122 | let j = offset + 4; |
2123 | for (let i = 0; i < encodings.length; i++) { | |
2124 | const enc = encodings[i]; | |
49a81837 PO |
2125 | buff[j] = enc >> 24; |
2126 | buff[j + 1] = enc >> 16; | |
2127 | buff[j + 2] = enc >> 8; | |
2128 | buff[j + 3] = enc; | |
a7a89626 | 2129 | |
49a81837 PO |
2130 | j += 4; |
2131 | } | |
a7a89626 | 2132 | |
6d6f0db0 SR |
2133 | sock._sQlen += j - offset; |
2134 | sock.flush(); | |
2135 | }, | |
a679a97d | 2136 | |
0e4808bf | 2137 | fbUpdateRequest(sock, incremental, x, y, w, h) { |
2b5f94fa JD |
2138 | const buff = sock._sQ; |
2139 | const offset = sock._sQlen; | |
9ff86fb7 | 2140 | |
6d6f0db0 SR |
2141 | if (typeof(x) === "undefined") { x = 0; } |
2142 | if (typeof(y) === "undefined") { y = 0; } | |
b1dee947 | 2143 | |
6d6f0db0 SR |
2144 | buff[offset] = 3; // msg-type |
2145 | buff[offset + 1] = incremental ? 1 : 0; | |
9ff86fb7 | 2146 | |
6d6f0db0 SR |
2147 | buff[offset + 2] = (x >> 8) & 0xFF; |
2148 | buff[offset + 3] = x & 0xFF; | |
9ff86fb7 | 2149 | |
6d6f0db0 SR |
2150 | buff[offset + 4] = (y >> 8) & 0xFF; |
2151 | buff[offset + 5] = y & 0xFF; | |
9ff86fb7 | 2152 | |
6d6f0db0 SR |
2153 | buff[offset + 6] = (w >> 8) & 0xFF; |
2154 | buff[offset + 7] = w & 0xFF; | |
9ff86fb7 | 2155 | |
6d6f0db0 SR |
2156 | buff[offset + 8] = (h >> 8) & 0xFF; |
2157 | buff[offset + 9] = h & 0xFF; | |
b1dee947 | 2158 | |
6d6f0db0 SR |
2159 | sock._sQlen += 10; |
2160 | sock.flush(); | |
85b35fc0 PO |
2161 | }, |
2162 | ||
0e4808bf | 2163 | xvpOp(sock, ver, op) { |
2b5f94fa JD |
2164 | const buff = sock._sQ; |
2165 | const offset = sock._sQlen; | |
85b35fc0 PO |
2166 | |
2167 | buff[offset] = 250; // msg-type | |
2168 | buff[offset + 1] = 0; // padding | |
2169 | ||
2170 | buff[offset + 2] = ver; | |
2171 | buff[offset + 3] = op; | |
2172 | ||
2173 | sock._sQlen += 4; | |
2174 | sock.flush(); | |
6d6f0db0 | 2175 | } |
6d6f0db0 | 2176 | }; |
b1dee947 | 2177 | |
4c38179d AP |
2178 | RFB.cursors = { |
2179 | none: { | |
2180 | rgbaPixels: new Uint8Array(), | |
2181 | w: 0, h: 0, | |
2182 | hotx: 0, hoty: 0, | |
2183 | }, | |
2184 | ||
2185 | dot: { | |
9881899e | 2186 | /* eslint-disable indent */ |
4c38179d AP |
2187 | rgbaPixels: new Uint8Array([ |
2188 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2189 | 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 255, | |
2190 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2191 | ]), | |
9881899e | 2192 | /* eslint-enable indent */ |
4c38179d AP |
2193 | w: 3, h: 3, |
2194 | hotx: 1, hoty: 1, | |
2195 | } | |
2196 | }; |