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a7a89626 JM |
1 | /* |
2 | * noVNC: HTML5 VNC client | |
f73fdc3e | 3 | * Copyright (C) 2020 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 | ||
f73fdc3e | 10 | import { toUnsigned32bit, toSigned32bit } from './util/int.js'; |
6d6f0db0 | 11 | import * as Log from './util/logging.js'; |
f73fdc3e | 12 | import { encodeUTF8, decodeUTF8 } from './util/strings.js'; |
3b7c4741 | 13 | import { dragThreshold } from './util/browser.js'; |
8be924c9 | 14 | import { clientToElement } from './util/element.js'; |
50cde2fa | 15 | import { setCapture } from './util/events.js'; |
e89eef94 | 16 | import EventTargetMixin from './util/eventtarget.js'; |
3ae0bb09 | 17 | import Display from "./display.js"; |
f73fdc3e NL |
18 | import Inflator from "./inflator.js"; |
19 | import Deflator from "./deflator.js"; | |
c1e2785f | 20 | import Keyboard from "./input/keyboard.js"; |
8be924c9 | 21 | import GestureHandler from "./input/gesturehandler.js"; |
b475eed5 | 22 | import Cursor from "./util/cursor.js"; |
3ae0bb09 | 23 | import Websock from "./websock.js"; |
3ae0bb09 SR |
24 | import DES from "./des.js"; |
25 | import KeyTable from "./input/keysym.js"; | |
26 | import XtScancode from "./input/xtscancodes.js"; | |
e17cae8f | 27 | import { encodings } from "./encodings.js"; |
3ae0bb09 | 28 | |
923cd220 PO |
29 | import RawDecoder from "./decoders/raw.js"; |
30 | import CopyRectDecoder from "./decoders/copyrect.js"; | |
31 | import RREDecoder from "./decoders/rre.js"; | |
32 | import HextileDecoder from "./decoders/hextile.js"; | |
33 | import TightDecoder from "./decoders/tight.js"; | |
34 | import TightPNGDecoder from "./decoders/tightpng.js"; | |
35 | ||
68e09edc | 36 | // How many seconds to wait for a disconnect to finish |
2b5f94fa | 37 | const DISCONNECT_TIMEOUT = 3; |
d7791ebb | 38 | const DEFAULT_BACKGROUND = 'rgb(40, 40, 40)'; |
68e09edc | 39 | |
150596be SM |
40 | // Minimum wait (ms) between two mouse moves |
41 | const MOUSE_MOVE_DELAY = 17; | |
42 | ||
f84bc57b | 43 | // Wheel thresholds |
88589a44 | 44 | const WHEEL_STEP = 50; // Pixels needed for one step |
f84bc57b PO |
45 | const WHEEL_LINE_HEIGHT = 19; // Assumed pixels for one line step |
46 | ||
8be924c9 PO |
47 | // Gesture thresholds |
48 | const GESTURE_ZOOMSENS = 75; | |
49 | const GESTURE_SCRLSENS = 50; | |
50 | const DOUBLE_TAP_TIMEOUT = 1000; | |
51 | const DOUBLE_TAP_THRESHOLD = 50; | |
52 | ||
f73fdc3e NL |
53 | // Extended clipboard pseudo-encoding formats |
54 | const extendedClipboardFormatText = 1; | |
55 | /*eslint-disable no-unused-vars */ | |
56 | const extendedClipboardFormatRtf = 1 << 1; | |
57 | const extendedClipboardFormatHtml = 1 << 2; | |
58 | const extendedClipboardFormatDib = 1 << 3; | |
59 | const extendedClipboardFormatFiles = 1 << 4; | |
60 | /*eslint-enable */ | |
61 | ||
62 | // Extended clipboard pseudo-encoding actions | |
63 | const extendedClipboardActionCaps = 1 << 24; | |
64 | const extendedClipboardActionRequest = 1 << 25; | |
65 | const extendedClipboardActionPeek = 1 << 26; | |
66 | const extendedClipboardActionNotify = 1 << 27; | |
67 | const extendedClipboardActionProvide = 1 << 28; | |
68 | ||
69 | ||
0e4808bf JD |
70 | export default class RFB extends EventTargetMixin { |
71 | constructor(target, url, options) { | |
72 | if (!target) { | |
d3ed883a | 73 | throw new Error("Must specify target"); |
0e4808bf JD |
74 | } |
75 | if (!url) { | |
d3ed883a | 76 | throw new Error("Must specify URL"); |
0e4808bf JD |
77 | } |
78 | ||
79 | super(); | |
80 | ||
81 | this._target = target; | |
82 | this._url = url; | |
83 | ||
84 | // Connection details | |
85 | options = options || {}; | |
e7dec527 | 86 | this._rfbCredentials = options.credentials || {}; |
0e4808bf JD |
87 | this._shared = 'shared' in options ? !!options.shared : true; |
88 | this._repeaterID = options.repeaterID || ''; | |
c9122303 | 89 | this._wsProtocols = options.wsProtocols || []; |
0e4808bf JD |
90 | |
91 | // Internal state | |
e7dec527 SM |
92 | this._rfbConnectionState = ''; |
93 | this._rfbInitState = ''; | |
94 | this._rfbAuthScheme = -1; | |
95 | this._rfbCleanDisconnect = true; | |
0e4808bf JD |
96 | |
97 | // Server capabilities | |
e7dec527 SM |
98 | this._rfbVersion = 0; |
99 | this._rfbMaxVersion = 3.8; | |
100 | this._rfbTightVNC = false; | |
101 | this._rfbVeNCryptState = 0; | |
102 | this._rfbXvpVer = 0; | |
0e4808bf | 103 | |
e7dec527 SM |
104 | this._fbWidth = 0; |
105 | this._fbHeight = 0; | |
0e4808bf | 106 | |
e7dec527 | 107 | this._fbName = ""; |
0e4808bf JD |
108 | |
109 | this._capabilities = { power: false }; | |
110 | ||
111 | this._supportsFence = false; | |
112 | ||
113 | this._supportsContinuousUpdates = false; | |
114 | this._enabledContinuousUpdates = false; | |
115 | ||
116 | this._supportsSetDesktopSize = false; | |
e7dec527 SM |
117 | this._screenID = 0; |
118 | this._screenFlags = 0; | |
0e4808bf JD |
119 | |
120 | this._qemuExtKeyEventSupported = false; | |
121 | ||
f73fdc3e NL |
122 | this._clipboardText = null; |
123 | this._clipboardServerCapabilitiesActions = {}; | |
124 | this._clipboardServerCapabilitiesFormats = {}; | |
125 | ||
0e4808bf JD |
126 | // Internal objects |
127 | this._sock = null; // Websock object | |
128 | this._display = null; // Display object | |
129 | this._flushing = false; // Display flushing state | |
130 | this._keyboard = null; // Keyboard input handler object | |
8be924c9 | 131 | this._gestures = null; // Gesture input handler object |
0e4808bf JD |
132 | |
133 | // Timers | |
134 | this._disconnTimer = null; // disconnection timer | |
135 | this._resizeTimeout = null; // resize rate limiting | |
150596be | 136 | this._mouseMoveTimer = null; |
0e4808bf | 137 | |
e17cae8f | 138 | // Decoder states |
923cd220 | 139 | this._decoders = {}; |
0e4808bf JD |
140 | |
141 | this._FBU = { | |
142 | rects: 0, | |
0e4808bf JD |
143 | x: 0, |
144 | y: 0, | |
145 | width: 0, | |
146 | height: 0, | |
923cd220 | 147 | encoding: null, |
0e4808bf JD |
148 | }; |
149 | ||
150 | // Mouse state | |
150596be | 151 | this._mousePos = {}; |
e7dec527 | 152 | this._mouseButtonMask = 0; |
150596be | 153 | this._mouseLastMoveTime = 0; |
0e4808bf JD |
154 | this._viewportDragging = false; |
155 | this._viewportDragPos = {}; | |
156 | this._viewportHasMoved = false; | |
f84bc57b PO |
157 | this._accumulatedWheelDeltaX = 0; |
158 | this._accumulatedWheelDeltaY = 0; | |
0e4808bf | 159 | |
8be924c9 PO |
160 | // Gesture state |
161 | this._gestureLastTapTime = null; | |
162 | this._gestureFirstDoubleTapEv = null; | |
163 | this._gestureLastMagnitudeX = 0; | |
164 | this._gestureLastMagnitudeY = 0; | |
165 | ||
0e4808bf JD |
166 | // Bound event handlers |
167 | this._eventHandlers = { | |
168 | focusCanvas: this._focusCanvas.bind(this), | |
169 | windowResize: this._windowResize.bind(this), | |
50cde2fa | 170 | handleMouse: this._handleMouse.bind(this), |
f84bc57b | 171 | handleWheel: this._handleWheel.bind(this), |
8be924c9 | 172 | handleGesture: this._handleGesture.bind(this), |
0e4808bf JD |
173 | }; |
174 | ||
175 | // main setup | |
176 | Log.Debug(">> RFB.constructor"); | |
177 | ||
178 | // Create DOM elements | |
179 | this._screen = document.createElement('div'); | |
180 | this._screen.style.display = 'flex'; | |
181 | this._screen.style.width = '100%'; | |
182 | this._screen.style.height = '100%'; | |
183 | this._screen.style.overflow = 'auto'; | |
d7791ebb | 184 | this._screen.style.background = DEFAULT_BACKGROUND; |
0e4808bf JD |
185 | this._canvas = document.createElement('canvas'); |
186 | this._canvas.style.margin = 'auto'; | |
187 | // Some browsers add an outline on focus | |
188 | this._canvas.style.outline = 'none'; | |
0e4808bf JD |
189 | this._canvas.width = 0; |
190 | this._canvas.height = 0; | |
191 | this._canvas.tabIndex = -1; | |
192 | this._screen.appendChild(this._canvas); | |
45808617 | 193 | |
d1314d4b AP |
194 | // Cursor |
195 | this._cursor = new Cursor(); | |
4c38179d AP |
196 | |
197 | // XXX: TightVNC 2.8.11 sends no cursor at all until Windows changes | |
198 | // it. Result: no cursor at all until a window border or an edit field | |
199 | // is hit blindly. But there are also VNC servers that draw the cursor | |
200 | // in the framebuffer and don't send the empty local cursor. There is | |
201 | // no way to satisfy both sides. | |
202 | // | |
203 | // The spec is unclear on this "initial cursor" issue. Many other | |
204 | // viewers (TigerVNC, RealVNC, Remmina) display an arrow as the | |
205 | // initial cursor instead. | |
206 | this._cursorImage = RFB.cursors.none; | |
b475eed5 | 207 | |
923cd220 PO |
208 | // populate decoder array with objects |
209 | this._decoders[encodings.encodingRaw] = new RawDecoder(); | |
210 | this._decoders[encodings.encodingCopyRect] = new CopyRectDecoder(); | |
211 | this._decoders[encodings.encodingRRE] = new RREDecoder(); | |
212 | this._decoders[encodings.encodingHextile] = new HextileDecoder(); | |
213 | this._decoders[encodings.encodingTight] = new TightDecoder(); | |
214 | this._decoders[encodings.encodingTightPNG] = new TightPNGDecoder(); | |
0e4808bf JD |
215 | |
216 | // NB: nothing that needs explicit teardown should be done | |
217 | // before this point, since this can throw an exception | |
218 | try { | |
219 | this._display = new Display(this._canvas); | |
220 | } catch (exc) { | |
221 | Log.Error("Display exception: " + exc); | |
222 | throw exc; | |
223 | } | |
224 | this._display.onflush = this._onFlush.bind(this); | |
0e4808bf JD |
225 | |
226 | this._keyboard = new Keyboard(this._canvas); | |
227 | this._keyboard.onkeyevent = this._handleKeyEvent.bind(this); | |
228 | ||
8be924c9 PO |
229 | this._gestures = new GestureHandler(); |
230 | ||
0e4808bf | 231 | this._sock = new Websock(); |
b8ff5d1b | 232 | this._sock.on('message', () => { |
00674385 | 233 | this._handleMessage(); |
b8ff5d1b | 234 | }); |
651c23ec | 235 | this._sock.on('open', () => { |
e7dec527 SM |
236 | if ((this._rfbConnectionState === 'connecting') && |
237 | (this._rfbInitState === '')) { | |
238 | this._rfbInitState = 'ProtocolVersion'; | |
0e4808bf JD |
239 | Log.Debug("Starting VNC handshake"); |
240 | } else { | |
241 | this._fail("Unexpected server connection while " + | |
e7dec527 | 242 | this._rfbConnectionState); |
b1dee947 | 243 | } |
651c23ec JD |
244 | }); |
245 | this._sock.on('close', (e) => { | |
0e4808bf JD |
246 | Log.Debug("WebSocket on-close event"); |
247 | let msg = ""; | |
248 | if (e.code) { | |
249 | msg = "(code: " + e.code; | |
250 | if (e.reason) { | |
251 | msg += ", reason: " + e.reason; | |
252 | } | |
253 | msg += ")"; | |
254 | } | |
e7dec527 | 255 | switch (this._rfbConnectionState) { |
0e4808bf JD |
256 | case 'connecting': |
257 | this._fail("Connection closed " + msg); | |
258 | break; | |
259 | case 'connected': | |
260 | // Handle disconnects that were initiated server-side | |
261 | this._updateConnectionState('disconnecting'); | |
262 | this._updateConnectionState('disconnected'); | |
263 | break; | |
264 | case 'disconnecting': | |
265 | // Normal disconnection path | |
266 | this._updateConnectionState('disconnected'); | |
267 | break; | |
268 | case 'disconnected': | |
269 | this._fail("Unexpected server disconnect " + | |
651c23ec | 270 | "when already disconnected " + msg); |
0e4808bf JD |
271 | break; |
272 | default: | |
273 | this._fail("Unexpected server disconnect before connecting " + | |
651c23ec | 274 | msg); |
0e4808bf JD |
275 | break; |
276 | } | |
277 | this._sock.off('close'); | |
0e4808bf | 278 | }); |
651c23ec | 279 | this._sock.on('error', e => Log.Warn("WebSocket on-error event")); |
8db09746 | 280 | |
0e4808bf JD |
281 | // Slight delay of the actual connection so that the caller has |
282 | // time to set up callbacks | |
283 | setTimeout(this._updateConnectionState.bind(this, 'connecting')); | |
ae510306 | 284 | |
0e4808bf | 285 | Log.Debug("<< RFB.constructor"); |
a7a89626 | 286 | |
0e4808bf | 287 | // ===== PROPERTIES ===== |
6d6f0db0 | 288 | |
0e4808bf JD |
289 | this.dragViewport = false; |
290 | this.focusOnClick = true; | |
a7a89626 | 291 | |
0e4808bf JD |
292 | this._viewOnly = false; |
293 | this._clipViewport = false; | |
294 | this._scaleViewport = false; | |
295 | this._resizeSession = false; | |
6aed0b4d PO |
296 | |
297 | this._showDotCursor = false; | |
298 | if (options.showDotCursor !== undefined) { | |
299 | Log.Warn("Specifying showDotCursor as a RFB constructor argument is deprecated"); | |
300 | this._showDotCursor = options.showDotCursor; | |
301 | } | |
efd1f8a4 AT |
302 | |
303 | this._qualityLevel = 6; | |
479d8cef | 304 | this._compressionLevel = 2; |
0e4808bf JD |
305 | } |
306 | ||
307 | // ===== PROPERTIES ===== | |
308 | ||
309 | get viewOnly() { return this._viewOnly; } | |
747b4623 PO |
310 | set viewOnly(viewOnly) { |
311 | this._viewOnly = viewOnly; | |
312 | ||
e7dec527 SM |
313 | if (this._rfbConnectionState === "connecting" || |
314 | this._rfbConnectionState === "connected") { | |
747b4623 PO |
315 | if (viewOnly) { |
316 | this._keyboard.ungrab(); | |
747b4623 PO |
317 | } else { |
318 | this._keyboard.grab(); | |
747b4623 PO |
319 | } |
320 | } | |
0e4808bf | 321 | } |
6d6f0db0 | 322 | |
0e4808bf | 323 | get capabilities() { return this._capabilities; } |
747b4623 | 324 | |
8be924c9 PO |
325 | get touchButton() { return 0; } |
326 | set touchButton(button) { Log.Warn("Using old API!"); } | |
747b4623 | 327 | |
0e4808bf | 328 | get clipViewport() { return this._clipViewport; } |
9b84f516 PO |
329 | set clipViewport(viewport) { |
330 | this._clipViewport = viewport; | |
331 | this._updateClip(); | |
0e4808bf | 332 | } |
747b4623 | 333 | |
0e4808bf | 334 | get scaleViewport() { return this._scaleViewport; } |
9b84f516 PO |
335 | set scaleViewport(scale) { |
336 | this._scaleViewport = scale; | |
337 | // Scaling trumps clipping, so we may need to adjust | |
338 | // clipping when enabling or disabling scaling | |
339 | if (scale && this._clipViewport) { | |
340 | this._updateClip(); | |
341 | } | |
342 | this._updateScale(); | |
343 | if (!scale && this._clipViewport) { | |
344 | this._updateClip(); | |
345 | } | |
0e4808bf | 346 | } |
747b4623 | 347 | |
0e4808bf | 348 | get resizeSession() { return this._resizeSession; } |
9b84f516 PO |
349 | set resizeSession(resize) { |
350 | this._resizeSession = resize; | |
351 | if (resize) { | |
352 | this._requestRemoteResize(); | |
353 | } | |
0e4808bf | 354 | } |
a80aa416 | 355 | |
4c38179d AP |
356 | get showDotCursor() { return this._showDotCursor; } |
357 | set showDotCursor(show) { | |
358 | this._showDotCursor = show; | |
359 | this._refreshCursor(); | |
360 | } | |
361 | ||
d7791ebb MM |
362 | get background() { return this._screen.style.background; } |
363 | set background(cssValue) { this._screen.style.background = cssValue; } | |
364 | ||
efd1f8a4 AT |
365 | get qualityLevel() { |
366 | return this._qualityLevel; | |
367 | } | |
368 | set qualityLevel(qualityLevel) { | |
369 | if (!Number.isInteger(qualityLevel) || qualityLevel < 0 || qualityLevel > 9) { | |
370 | Log.Error("qualityLevel must be an integer between 0 and 9"); | |
371 | return; | |
372 | } | |
373 | ||
374 | if (this._qualityLevel === qualityLevel) { | |
375 | return; | |
376 | } | |
377 | ||
378 | this._qualityLevel = qualityLevel; | |
379 | ||
e7dec527 | 380 | if (this._rfbConnectionState === 'connected') { |
efd1f8a4 AT |
381 | this._sendEncodings(); |
382 | } | |
383 | } | |
384 | ||
479d8cef SM |
385 | get compressionLevel() { |
386 | return this._compressionLevel; | |
387 | } | |
388 | set compressionLevel(compressionLevel) { | |
389 | if (!Number.isInteger(compressionLevel) || compressionLevel < 0 || compressionLevel > 9) { | |
390 | Log.Error("compressionLevel must be an integer between 0 and 9"); | |
391 | return; | |
392 | } | |
393 | ||
394 | if (this._compressionLevel === compressionLevel) { | |
395 | return; | |
396 | } | |
397 | ||
398 | this._compressionLevel = compressionLevel; | |
399 | ||
e7dec527 | 400 | if (this._rfbConnectionState === 'connected') { |
479d8cef SM |
401 | this._sendEncodings(); |
402 | } | |
403 | } | |
404 | ||
747b4623 PO |
405 | // ===== PUBLIC METHODS ===== |
406 | ||
0e4808bf | 407 | disconnect() { |
6d6f0db0 SR |
408 | this._updateConnectionState('disconnecting'); |
409 | this._sock.off('error'); | |
410 | this._sock.off('message'); | |
411 | this._sock.off('open'); | |
0e4808bf | 412 | } |
6d6f0db0 | 413 | |
0e4808bf | 414 | sendCredentials(creds) { |
e7dec527 | 415 | this._rfbCredentials = creds; |
00674385 | 416 | setTimeout(this._initMsg.bind(this), 0); |
0e4808bf | 417 | } |
6d6f0db0 | 418 | |
0e4808bf | 419 | sendCtrlAltDel() { |
e7dec527 | 420 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
6d6f0db0 SR |
421 | Log.Info("Sending Ctrl-Alt-Del"); |
422 | ||
94f5cf05 PO |
423 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true); |
424 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true); | |
425 | this.sendKey(KeyTable.XK_Delete, "Delete", true); | |
426 | this.sendKey(KeyTable.XK_Delete, "Delete", false); | |
427 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false); | |
428 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false); | |
0e4808bf | 429 | } |
6d6f0db0 | 430 | |
0e4808bf | 431 | machineShutdown() { |
cd523e8f | 432 | this._xvpOp(1, 2); |
0e4808bf | 433 | } |
6d6f0db0 | 434 | |
0e4808bf | 435 | machineReboot() { |
cd523e8f | 436 | this._xvpOp(1, 3); |
0e4808bf | 437 | } |
6d6f0db0 | 438 | |
0e4808bf | 439 | machineReset() { |
cd523e8f | 440 | this._xvpOp(1, 4); |
0e4808bf | 441 | } |
6d6f0db0 SR |
442 | |
443 | // Send a key press. If 'down' is not specified then send a down key | |
444 | // followed by an up key. | |
0e4808bf | 445 | sendKey(keysym, code, down) { |
e7dec527 | 446 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
94f5cf05 PO |
447 | |
448 | if (down === undefined) { | |
449 | this.sendKey(keysym, code, true); | |
450 | this.sendKey(keysym, code, false); | |
15a62695 | 451 | return; |
94f5cf05 PO |
452 | } |
453 | ||
2b5f94fa | 454 | const scancode = XtScancode[code]; |
94f5cf05 | 455 | |
be70fe0a | 456 | if (this._qemuExtKeyEventSupported && scancode) { |
459ed008 PO |
457 | // 0 is NoSymbol |
458 | keysym = keysym || 0; | |
459 | ||
94f5cf05 PO |
460 | Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode); |
461 | ||
462 | RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode); | |
463 | } else { | |
459ed008 | 464 | if (!keysym) { |
15a62695 | 465 | return; |
459ed008 | 466 | } |
6d6f0db0 SR |
467 | Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym); |
468 | RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0); | |
6d6f0db0 | 469 | } |
0e4808bf | 470 | } |
6d6f0db0 | 471 | |
0e4808bf | 472 | focus() { |
9b84f516 | 473 | this._canvas.focus(); |
0e4808bf | 474 | } |
b9854a5c | 475 | |
0e4808bf | 476 | blur() { |
9b84f516 | 477 | this._canvas.blur(); |
0e4808bf | 478 | } |
b9854a5c | 479 | |
0e4808bf | 480 | clipboardPasteFrom(text) { |
e7dec527 | 481 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
f73fdc3e NL |
482 | |
483 | if (this._clipboardServerCapabilitiesFormats[extendedClipboardFormatText] && | |
484 | this._clipboardServerCapabilitiesActions[extendedClipboardActionNotify]) { | |
485 | ||
486 | this._clipboardText = text; | |
487 | RFB.messages.extendedClipboardNotify(this._sock, [extendedClipboardFormatText]); | |
488 | } else { | |
489 | let data = new Uint8Array(text.length); | |
490 | for (let i = 0; i < text.length; i++) { | |
491 | // FIXME: text can have values outside of Latin1/Uint8 | |
492 | data[i] = text.charCodeAt(i); | |
493 | } | |
494 | ||
495 | RFB.messages.clientCutText(this._sock, data); | |
496 | } | |
0e4808bf | 497 | } |
b1dee947 | 498 | |
747b4623 | 499 | // ===== PRIVATE METHODS ===== |
b0ec6509 | 500 | |
0e4808bf | 501 | _connect() { |
6d6f0db0 | 502 | Log.Debug(">> RFB.connect"); |
b0ec6509 | 503 | |
5b4e5d01 | 504 | Log.Info("connecting to " + this._url); |
b1dee947 | 505 | |
6d6f0db0 SR |
506 | try { |
507 | // WebSocket.onopen transitions to the RFB init states | |
25b3d49d | 508 | this._sock.open(this._url, this._wsProtocols); |
6d6f0db0 SR |
509 | } catch (e) { |
510 | if (e.name === 'SyntaxError') { | |
d472f3f1 | 511 | this._fail("Invalid host or port (" + e + ")"); |
b1dee947 | 512 | } else { |
d472f3f1 | 513 | this._fail("Error when opening socket (" + e + ")"); |
159ad55d | 514 | } |
6d6f0db0 | 515 | } |
e3efeb32 | 516 | |
9b84f516 PO |
517 | // Make our elements part of the page |
518 | this._target.appendChild(this._screen); | |
519 | ||
8be924c9 PO |
520 | this._gestures.attach(this._canvas); |
521 | ||
b475eed5 | 522 | this._cursor.attach(this._canvas); |
4c38179d | 523 | this._refreshCursor(); |
b475eed5 | 524 | |
9b84f516 PO |
525 | // Monitor size changes of the screen |
526 | // FIXME: Use ResizeObserver, or hidden overflow | |
527 | window.addEventListener('resize', this._eventHandlers.windowResize); | |
528 | ||
2afda544 | 529 | // Always grab focus on some kind of click event |
9b84f516 PO |
530 | this._canvas.addEventListener("mousedown", this._eventHandlers.focusCanvas); |
531 | this._canvas.addEventListener("touchstart", this._eventHandlers.focusCanvas); | |
2afda544 | 532 | |
50cde2fa PO |
533 | // Mouse events |
534 | this._canvas.addEventListener('mousedown', this._eventHandlers.handleMouse); | |
535 | this._canvas.addEventListener('mouseup', this._eventHandlers.handleMouse); | |
536 | this._canvas.addEventListener('mousemove', this._eventHandlers.handleMouse); | |
537 | // Prevent middle-click pasting (see handler for why we bind to document) | |
538 | this._canvas.addEventListener('click', this._eventHandlers.handleMouse); | |
539 | // preventDefault() on mousedown doesn't stop this event for some | |
540 | // reason so we have to explicitly block it | |
541 | this._canvas.addEventListener('contextmenu', this._eventHandlers.handleMouse); | |
542 | ||
f84bc57b PO |
543 | // Wheel events |
544 | this._canvas.addEventListener("wheel", this._eventHandlers.handleWheel); | |
545 | ||
8be924c9 PO |
546 | // Gesture events |
547 | this._canvas.addEventListener("gesturestart", this._eventHandlers.handleGesture); | |
548 | this._canvas.addEventListener("gesturemove", this._eventHandlers.handleGesture); | |
549 | this._canvas.addEventListener("gestureend", this._eventHandlers.handleGesture); | |
550 | ||
6d6f0db0 | 551 | Log.Debug("<< RFB.connect"); |
0e4808bf | 552 | } |
6d6f0db0 | 553 | |
0e4808bf | 554 | _disconnect() { |
6d6f0db0 | 555 | Log.Debug(">> RFB.disconnect"); |
b475eed5 | 556 | this._cursor.detach(); |
8be924c9 PO |
557 | this._canvas.removeEventListener("gesturestart", this._eventHandlers.handleGesture); |
558 | this._canvas.removeEventListener("gesturemove", this._eventHandlers.handleGesture); | |
559 | this._canvas.removeEventListener("gestureend", this._eventHandlers.handleGesture); | |
f84bc57b | 560 | this._canvas.removeEventListener("wheel", this._eventHandlers.handleWheel); |
50cde2fa PO |
561 | this._canvas.removeEventListener('mousedown', this._eventHandlers.handleMouse); |
562 | this._canvas.removeEventListener('mouseup', this._eventHandlers.handleMouse); | |
563 | this._canvas.removeEventListener('mousemove', this._eventHandlers.handleMouse); | |
564 | this._canvas.removeEventListener('click', this._eventHandlers.handleMouse); | |
565 | this._canvas.removeEventListener('contextmenu', this._eventHandlers.handleMouse); | |
9b84f516 PO |
566 | this._canvas.removeEventListener("mousedown", this._eventHandlers.focusCanvas); |
567 | this._canvas.removeEventListener("touchstart", this._eventHandlers.focusCanvas); | |
568 | window.removeEventListener('resize', this._eventHandlers.windowResize); | |
569 | this._keyboard.ungrab(); | |
8be924c9 | 570 | this._gestures.detach(); |
6d6f0db0 | 571 | this._sock.close(); |
b245ec70 SM |
572 | try { |
573 | this._target.removeChild(this._screen); | |
574 | } catch (e) { | |
575 | if (e.name === 'NotFoundError') { | |
576 | // Some cases where the initial connection fails | |
577 | // can disconnect before the _screen is created | |
578 | } else { | |
579 | throw e; | |
580 | } | |
581 | } | |
9b84f516 | 582 | clearTimeout(this._resizeTimeout); |
150596be | 583 | clearTimeout(this._mouseMoveTimer); |
6d6f0db0 | 584 | Log.Debug("<< RFB.disconnect"); |
0e4808bf | 585 | } |
6d6f0db0 | 586 | |
0e4808bf | 587 | _focusCanvas(event) { |
b8dfb983 | 588 | if (!this.focusOnClick) { |
1d6ff4a3 PO |
589 | return; |
590 | } | |
591 | ||
9b84f516 | 592 | this.focus(); |
0e4808bf | 593 | } |
9b84f516 | 594 | |
ce66b469 | 595 | _setDesktopName(name) { |
e7dec527 | 596 | this._fbName = name; |
ce66b469 NL |
597 | this.dispatchEvent(new CustomEvent( |
598 | "desktopname", | |
e7dec527 | 599 | { detail: { name: this._fbName } })); |
ce66b469 NL |
600 | } |
601 | ||
0e4808bf | 602 | _windowResize(event) { |
9b84f516 PO |
603 | // If the window resized then our screen element might have |
604 | // as well. Update the viewport dimensions. | |
651c23ec | 605 | window.requestAnimationFrame(() => { |
9b84f516 PO |
606 | this._updateClip(); |
607 | this._updateScale(); | |
651c23ec | 608 | }); |
9b84f516 PO |
609 | |
610 | if (this._resizeSession) { | |
611 | // Request changing the resolution of the remote display to | |
612 | // the size of the local browser viewport. | |
613 | ||
614 | // In order to not send multiple requests before the browser-resize | |
615 | // is finished we wait 0.5 seconds before sending the request. | |
616 | clearTimeout(this._resizeTimeout); | |
617 | this._resizeTimeout = setTimeout(this._requestRemoteResize.bind(this), 500); | |
618 | } | |
0e4808bf | 619 | } |
9b84f516 PO |
620 | |
621 | // Update state of clipping in Display object, and make sure the | |
622 | // configured viewport matches the current screen size | |
0e4808bf | 623 | _updateClip() { |
e7dec527 SM |
624 | const curClip = this._display.clipViewport; |
625 | let newClip = this._clipViewport; | |
9b84f516 PO |
626 | |
627 | if (this._scaleViewport) { | |
628 | // Disable viewport clipping if we are scaling | |
e7dec527 | 629 | newClip = false; |
9b84f516 PO |
630 | } |
631 | ||
e7dec527 SM |
632 | if (curClip !== newClip) { |
633 | this._display.clipViewport = newClip; | |
9b84f516 PO |
634 | } |
635 | ||
e7dec527 | 636 | if (newClip) { |
9b84f516 PO |
637 | // When clipping is enabled, the screen is limited to |
638 | // the size of the container. | |
2b5f94fa | 639 | const size = this._screenSize(); |
9b84f516 PO |
640 | this._display.viewportChangeSize(size.w, size.h); |
641 | this._fixScrollbars(); | |
642 | } | |
0e4808bf | 643 | } |
9b84f516 | 644 | |
0e4808bf | 645 | _updateScale() { |
9b84f516 PO |
646 | if (!this._scaleViewport) { |
647 | this._display.scale = 1.0; | |
648 | } else { | |
2b5f94fa | 649 | const size = this._screenSize(); |
9b84f516 PO |
650 | this._display.autoscale(size.w, size.h); |
651 | } | |
652 | this._fixScrollbars(); | |
0e4808bf | 653 | } |
9b84f516 PO |
654 | |
655 | // Requests a change of remote desktop size. This message is an extension | |
656 | // and may only be sent if we have received an ExtendedDesktopSize message | |
0e4808bf | 657 | _requestRemoteResize() { |
9b84f516 PO |
658 | clearTimeout(this._resizeTimeout); |
659 | this._resizeTimeout = null; | |
660 | ||
661 | if (!this._resizeSession || this._viewOnly || | |
662 | !this._supportsSetDesktopSize) { | |
663 | return; | |
664 | } | |
665 | ||
2b5f94fa | 666 | const size = this._screenSize(); |
ab1ace38 PO |
667 | RFB.messages.setDesktopSize(this._sock, |
668 | Math.floor(size.w), Math.floor(size.h), | |
e7dec527 | 669 | this._screenID, this._screenFlags); |
9b84f516 PO |
670 | |
671 | Log.Debug('Requested new desktop size: ' + | |
672 | size.w + 'x' + size.h); | |
0e4808bf | 673 | } |
9b84f516 PO |
674 | |
675 | // Gets the the size of the available screen | |
0e4808bf | 676 | _screenSize() { |
ab1ace38 PO |
677 | let r = this._screen.getBoundingClientRect(); |
678 | return { w: r.width, h: r.height }; | |
0e4808bf | 679 | } |
9b84f516 | 680 | |
0e4808bf | 681 | _fixScrollbars() { |
9b84f516 PO |
682 | // This is a hack because Chrome screws up the calculation |
683 | // for when scrollbars are needed. So to fix it we temporarily | |
684 | // toggle them off and on. | |
2b5f94fa | 685 | const orig = this._screen.style.overflow; |
9b84f516 PO |
686 | this._screen.style.overflow = 'hidden'; |
687 | // Force Chrome to recalculate the layout by asking for | |
688 | // an element's dimensions | |
689 | this._screen.getBoundingClientRect(); | |
690 | this._screen.style.overflow = orig; | |
0e4808bf | 691 | } |
2afda544 | 692 | |
6d6f0db0 SR |
693 | /* |
694 | * Connection states: | |
695 | * connecting | |
696 | * connected | |
697 | * disconnecting | |
698 | * disconnected - permanent state | |
699 | */ | |
0e4808bf | 700 | _updateConnectionState(state) { |
e7dec527 | 701 | const oldstate = this._rfbConnectionState; |
6d6f0db0 SR |
702 | |
703 | if (state === oldstate) { | |
704 | Log.Debug("Already in state '" + state + "', ignoring"); | |
705 | return; | |
706 | } | |
707 | ||
708 | // The 'disconnected' state is permanent for each RFB object | |
709 | if (oldstate === 'disconnected') { | |
710 | Log.Error("Tried changing state of a disconnected RFB object"); | |
711 | return; | |
712 | } | |
713 | ||
714 | // Ensure proper transitions before doing anything | |
715 | switch (state) { | |
716 | case 'connected': | |
717 | if (oldstate !== 'connecting') { | |
718 | Log.Error("Bad transition to connected state, " + | |
719 | "previous connection state: " + oldstate); | |
720 | return; | |
b1dee947 | 721 | } |
6d6f0db0 | 722 | break; |
a7a89626 | 723 | |
6d6f0db0 SR |
724 | case 'disconnected': |
725 | if (oldstate !== 'disconnecting') { | |
726 | Log.Error("Bad transition to disconnected state, " + | |
727 | "previous connection state: " + oldstate); | |
728 | return; | |
729 | } | |
730 | break; | |
a7a89626 | 731 | |
6d6f0db0 SR |
732 | case 'connecting': |
733 | if (oldstate !== '') { | |
734 | Log.Error("Bad transition to connecting state, " + | |
735 | "previous connection state: " + oldstate); | |
736 | return; | |
737 | } | |
738 | break; | |
b1dee947 | 739 | |
6d6f0db0 SR |
740 | case 'disconnecting': |
741 | if (oldstate !== 'connected' && oldstate !== 'connecting') { | |
742 | Log.Error("Bad transition to disconnecting state, " + | |
743 | "previous connection state: " + oldstate); | |
744 | return; | |
745 | } | |
746 | break; | |
a679a97d | 747 | |
6d6f0db0 SR |
748 | default: |
749 | Log.Error("Unknown connection state: " + state); | |
3bb12056 | 750 | return; |
6d6f0db0 | 751 | } |
b1dee947 | 752 | |
6d6f0db0 | 753 | // State change actions |
3bb12056 | 754 | |
e7dec527 | 755 | this._rfbConnectionState = state; |
b2e961d4 | 756 | |
651c23ec | 757 | Log.Debug("New state '" + state + "', was '" + oldstate + "'."); |
b2e961d4 | 758 | |
6d6f0db0 SR |
759 | if (this._disconnTimer && state !== 'disconnecting') { |
760 | Log.Debug("Clearing disconnect timer"); | |
761 | clearTimeout(this._disconnTimer); | |
762 | this._disconnTimer = null; | |
3bb12056 | 763 | |
6d6f0db0 SR |
764 | // make sure we don't get a double event |
765 | this._sock.off('close'); | |
766 | } | |
b2e961d4 | 767 | |
6d6f0db0 | 768 | switch (state) { |
6d6f0db0 SR |
769 | case 'connecting': |
770 | this._connect(); | |
771 | break; | |
b2e961d4 | 772 | |
ee5cae9f | 773 | case 'connected': |
2b5f94fa | 774 | this.dispatchEvent(new CustomEvent("connect", { detail: {} })); |
ee5cae9f SM |
775 | break; |
776 | ||
6d6f0db0 SR |
777 | case 'disconnecting': |
778 | this._disconnect(); | |
b2e961d4 | 779 | |
651c23ec | 780 | this._disconnTimer = setTimeout(() => { |
d472f3f1 | 781 | Log.Error("Disconnection timed out."); |
6d6f0db0 | 782 | this._updateConnectionState('disconnected'); |
651c23ec | 783 | }, DISCONNECT_TIMEOUT * 1000); |
6d6f0db0 | 784 | break; |
ee5cae9f SM |
785 | |
786 | case 'disconnected': | |
2b5f94fa | 787 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 788 | "disconnect", { detail: |
e7dec527 | 789 | { clean: this._rfbCleanDisconnect } })); |
ee5cae9f | 790 | break; |
6d6f0db0 | 791 | } |
0e4808bf | 792 | } |
6d6f0db0 SR |
793 | |
794 | /* Print errors and disconnect | |
795 | * | |
d472f3f1 | 796 | * The parameter 'details' is used for information that |
6d6f0db0 SR |
797 | * should be logged but not sent to the user interface. |
798 | */ | |
0e4808bf | 799 | _fail(details) { |
e7dec527 | 800 | switch (this._rfbConnectionState) { |
6d6f0db0 | 801 | case 'disconnecting': |
d472f3f1 | 802 | Log.Error("Failed when disconnecting: " + details); |
6d6f0db0 SR |
803 | break; |
804 | case 'connected': | |
d472f3f1 | 805 | Log.Error("Failed while connected: " + details); |
6d6f0db0 SR |
806 | break; |
807 | case 'connecting': | |
d472f3f1 | 808 | Log.Error("Failed when connecting: " + details); |
6d6f0db0 SR |
809 | break; |
810 | default: | |
d472f3f1 | 811 | Log.Error("RFB failure: " + details); |
6d6f0db0 SR |
812 | break; |
813 | } | |
e7dec527 | 814 | this._rfbCleanDisconnect = false; //This is sent to the UI |
6d6f0db0 SR |
815 | |
816 | // Transition to disconnected without waiting for socket to close | |
817 | this._updateConnectionState('disconnecting'); | |
818 | this._updateConnectionState('disconnected'); | |
819 | ||
820 | return false; | |
0e4808bf | 821 | } |
6d6f0db0 | 822 | |
0e4808bf | 823 | _setCapability(cap, val) { |
832be262 | 824 | this._capabilities[cap] = val; |
2b5f94fa | 825 | this.dispatchEvent(new CustomEvent("capabilities", |
0e4808bf JD |
826 | { detail: { capabilities: this._capabilities } })); |
827 | } | |
b1dee947 | 828 | |
00674385 | 829 | _handleMessage() { |
8a189a62 | 830 | if (this._sock.rQlen === 0) { |
00674385 | 831 | Log.Warn("handleMessage called on an empty receive queue"); |
6d6f0db0 SR |
832 | return; |
833 | } | |
b1dee947 | 834 | |
e7dec527 | 835 | switch (this._rfbConnectionState) { |
6d6f0db0 SR |
836 | case 'disconnected': |
837 | Log.Error("Got data while disconnected"); | |
838 | break; | |
839 | case 'connected': | |
840 | while (true) { | |
841 | if (this._flushing) { | |
842 | break; | |
843 | } | |
00674385 | 844 | if (!this._normalMsg()) { |
6d6f0db0 SR |
845 | break; |
846 | } | |
8a189a62 | 847 | if (this._sock.rQlen === 0) { |
6d6f0db0 SR |
848 | break; |
849 | } | |
850 | } | |
851 | break; | |
852 | default: | |
00674385 | 853 | this._initMsg(); |
6d6f0db0 SR |
854 | break; |
855 | } | |
0e4808bf | 856 | } |
3bb12056 | 857 | |
0e4808bf | 858 | _handleKeyEvent(keysym, code, down) { |
d0703d1b | 859 | this.sendKey(keysym, code, down); |
0e4808bf | 860 | } |
06a9ef0c | 861 | |
50cde2fa PO |
862 | _handleMouse(ev) { |
863 | /* | |
864 | * We don't check connection status or viewOnly here as the | |
865 | * mouse events might be used to control the viewport | |
866 | */ | |
867 | ||
868 | if (ev.type === 'click') { | |
869 | /* | |
870 | * Note: This is only needed for the 'click' event as it fails | |
871 | * to fire properly for the target element so we have | |
872 | * to listen on the document element instead. | |
873 | */ | |
874 | if (ev.target !== this._canvas) { | |
875 | return; | |
876 | } | |
877 | } | |
878 | ||
879 | // FIXME: if we're in view-only and not dragging, | |
880 | // should we stop events? | |
881 | ev.stopPropagation(); | |
882 | ev.preventDefault(); | |
883 | ||
884 | if ((ev.type === 'click') || (ev.type === 'contextmenu')) { | |
885 | return; | |
886 | } | |
887 | ||
888 | let pos = clientToElement(ev.clientX, ev.clientY, | |
889 | this._canvas); | |
890 | ||
891 | switch (ev.type) { | |
892 | case 'mousedown': | |
893 | setCapture(this._canvas); | |
894 | this._handleMouseButton(pos.x, pos.y, | |
895 | true, 1 << ev.button); | |
896 | break; | |
897 | case 'mouseup': | |
898 | this._handleMouseButton(pos.x, pos.y, | |
899 | false, 1 << ev.button); | |
900 | break; | |
901 | case 'mousemove': | |
902 | this._handleMouseMove(pos.x, pos.y); | |
903 | break; | |
904 | } | |
905 | } | |
906 | ||
0e4808bf | 907 | _handleMouseButton(x, y, down, bmask) { |
0460e5fd | 908 | if (this.dragViewport) { |
6d6f0db0 SR |
909 | if (down && !this._viewportDragging) { |
910 | this._viewportDragging = true; | |
911 | this._viewportDragPos = {'x': x, 'y': y}; | |
898cd32c | 912 | this._viewportHasMoved = false; |
a7127fee | 913 | |
6d6f0db0 | 914 | // Skip sending mouse events |
b1dee947 | 915 | return; |
6d6f0db0 SR |
916 | } else { |
917 | this._viewportDragging = false; | |
8db09746 | 918 | |
898cd32c PO |
919 | // If we actually performed a drag then we are done |
920 | // here and should not send any mouse events | |
921 | if (this._viewportHasMoved) { | |
922 | return; | |
6d6f0db0 | 923 | } |
898cd32c PO |
924 | |
925 | // Otherwise we treat this as a mouse click event. | |
926 | // Send the button down event here, as the button up | |
927 | // event is sent at the end of this function. | |
150596be | 928 | this._sendMouse(x, y, bmask); |
b1dee947 | 929 | } |
6d6f0db0 | 930 | } |
8db09746 | 931 | |
150596be SM |
932 | // Flush waiting move event first |
933 | if (this._mouseMoveTimer !== null) { | |
934 | clearTimeout(this._mouseMoveTimer); | |
935 | this._mouseMoveTimer = null; | |
936 | this._sendMouse(x, y, this._mouseButtonMask); | |
937 | } | |
8f06673a | 938 | |
150596be SM |
939 | if (down) { |
940 | this._mouseButtonMask |= bmask; | |
941 | } else { | |
942 | this._mouseButtonMask &= ~bmask; | |
943 | } | |
944 | ||
945 | this._sendMouse(x, y, this._mouseButtonMask); | |
0e4808bf | 946 | } |
8db09746 | 947 | |
0e4808bf | 948 | _handleMouseMove(x, y) { |
6d6f0db0 | 949 | if (this._viewportDragging) { |
2b5f94fa JD |
950 | const deltaX = this._viewportDragPos.x - x; |
951 | const deltaY = this._viewportDragPos.y - y; | |
8db09746 | 952 | |
6d6f0db0 SR |
953 | if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold || |
954 | Math.abs(deltaY) > dragThreshold)) { | |
955 | this._viewportHasMoved = true; | |
27e77d46 | 956 | |
6d6f0db0 SR |
957 | this._viewportDragPos = {'x': x, 'y': y}; |
958 | this._display.viewportChangePos(deltaX, deltaY); | |
b50f3406 | 959 | } |
8db09746 | 960 | |
6d6f0db0 SR |
961 | // Skip sending mouse events |
962 | return; | |
963 | } | |
b1dee947 | 964 | |
150596be SM |
965 | this._mousePos = { 'x': x, 'y': y }; |
966 | ||
967 | // Limit many mouse move events to one every MOUSE_MOVE_DELAY ms | |
968 | if (this._mouseMoveTimer == null) { | |
969 | ||
970 | const timeSinceLastMove = Date.now() - this._mouseLastMoveTime; | |
971 | if (timeSinceLastMove > MOUSE_MOVE_DELAY) { | |
972 | this._sendMouse(x, y, this._mouseButtonMask); | |
973 | this._mouseLastMoveTime = Date.now(); | |
974 | } else { | |
975 | // Too soon since the latest move, wait the remaining time | |
976 | this._mouseMoveTimer = setTimeout(() => { | |
977 | this._handleDelayedMouseMove(); | |
978 | }, MOUSE_MOVE_DELAY - timeSinceLastMove); | |
979 | } | |
980 | } | |
981 | } | |
b1dee947 | 982 | |
150596be SM |
983 | _handleDelayedMouseMove() { |
984 | this._mouseMoveTimer = null; | |
985 | this._sendMouse(this._mousePos.x, this._mousePos.y, | |
986 | this._mouseButtonMask); | |
987 | this._mouseLastMoveTime = Date.now(); | |
988 | } | |
989 | ||
990 | _sendMouse(x, y, mask) { | |
e7dec527 | 991 | if (this._rfbConnectionState !== 'connected') { return; } |
150596be SM |
992 | if (this._viewOnly) { return; } // View only, skip mouse events |
993 | ||
994 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), | |
995 | this._display.absY(y), mask); | |
0e4808bf | 996 | } |
b1dee947 | 997 | |
f84bc57b PO |
998 | _handleWheel(ev) { |
999 | if (this._rfbConnectionState !== 'connected') { return; } | |
1000 | if (this._viewOnly) { return; } // View only, skip mouse events | |
1001 | ||
1002 | ev.stopPropagation(); | |
1003 | ev.preventDefault(); | |
1004 | ||
1005 | let pos = clientToElement(ev.clientX, ev.clientY, | |
1006 | this._canvas); | |
1007 | ||
1008 | let dX = ev.deltaX; | |
1009 | let dY = ev.deltaY; | |
1010 | ||
1011 | // Pixel units unless it's non-zero. | |
1012 | // Note that if deltamode is line or page won't matter since we aren't | |
1013 | // sending the mouse wheel delta to the server anyway. | |
1014 | // The difference between pixel and line can be important however since | |
1015 | // we have a threshold that can be smaller than the line height. | |
1016 | if (ev.deltaMode !== 0) { | |
1017 | dX *= WHEEL_LINE_HEIGHT; | |
1018 | dY *= WHEEL_LINE_HEIGHT; | |
1019 | } | |
1020 | ||
1021 | // Mouse wheel events are sent in steps over VNC. This means that the VNC | |
1022 | // protocol can't handle a wheel event with specific distance or speed. | |
1023 | // Therefor, if we get a lot of small mouse wheel events we combine them. | |
1024 | this._accumulatedWheelDeltaX += dX; | |
1025 | this._accumulatedWheelDeltaY += dY; | |
1026 | ||
1027 | // Generate a mouse wheel step event when the accumulated delta | |
1028 | // for one of the axes is large enough. | |
88589a44 | 1029 | if (Math.abs(this._accumulatedWheelDeltaX) >= WHEEL_STEP) { |
f84bc57b PO |
1030 | if (this._accumulatedWheelDeltaX < 0) { |
1031 | this._handleMouseButton(pos.x, pos.y, true, 1 << 5); | |
1032 | this._handleMouseButton(pos.x, pos.y, false, 1 << 5); | |
1033 | } else if (this._accumulatedWheelDeltaX > 0) { | |
1034 | this._handleMouseButton(pos.x, pos.y, true, 1 << 6); | |
1035 | this._handleMouseButton(pos.x, pos.y, false, 1 << 6); | |
1036 | } | |
1037 | ||
1038 | this._accumulatedWheelDeltaX = 0; | |
1039 | } | |
88589a44 | 1040 | if (Math.abs(this._accumulatedWheelDeltaY) >= WHEEL_STEP) { |
f84bc57b PO |
1041 | if (this._accumulatedWheelDeltaY < 0) { |
1042 | this._handleMouseButton(pos.x, pos.y, true, 1 << 3); | |
1043 | this._handleMouseButton(pos.x, pos.y, false, 1 << 3); | |
1044 | } else if (this._accumulatedWheelDeltaY > 0) { | |
1045 | this._handleMouseButton(pos.x, pos.y, true, 1 << 4); | |
1046 | this._handleMouseButton(pos.x, pos.y, false, 1 << 4); | |
1047 | } | |
1048 | ||
1049 | this._accumulatedWheelDeltaY = 0; | |
1050 | } | |
1051 | } | |
1052 | ||
32ed7c67 SM |
1053 | _fakeMouseMove(ev, elementX, elementY) { |
1054 | this._handleMouseMove(elementX, elementY); | |
1055 | this._cursor.move(ev.detail.clientX, ev.detail.clientY); | |
1056 | } | |
1057 | ||
8be924c9 PO |
1058 | _handleTapEvent(ev, bmask) { |
1059 | let pos = clientToElement(ev.detail.clientX, ev.detail.clientY, | |
1060 | this._canvas); | |
1061 | ||
1062 | // If the user quickly taps multiple times we assume they meant to | |
1063 | // hit the same spot, so slightly adjust coordinates | |
1064 | ||
1065 | if ((this._gestureLastTapTime !== null) && | |
1066 | ((Date.now() - this._gestureLastTapTime) < DOUBLE_TAP_TIMEOUT) && | |
1067 | (this._gestureFirstDoubleTapEv.detail.type === ev.detail.type)) { | |
1068 | let dx = this._gestureFirstDoubleTapEv.detail.clientX - ev.detail.clientX; | |
1069 | let dy = this._gestureFirstDoubleTapEv.detail.clientY - ev.detail.clientY; | |
1070 | let distance = Math.hypot(dx, dy); | |
1071 | ||
1072 | if (distance < DOUBLE_TAP_THRESHOLD) { | |
1073 | pos = clientToElement(this._gestureFirstDoubleTapEv.detail.clientX, | |
1074 | this._gestureFirstDoubleTapEv.detail.clientY, | |
1075 | this._canvas); | |
1076 | } else { | |
1077 | this._gestureFirstDoubleTapEv = ev; | |
1078 | } | |
1079 | } else { | |
1080 | this._gestureFirstDoubleTapEv = ev; | |
1081 | } | |
1082 | this._gestureLastTapTime = Date.now(); | |
1083 | ||
32ed7c67 | 1084 | this._fakeMouseMove(this._gestureFirstDoubleTapEv, pos.x, pos.y); |
8be924c9 PO |
1085 | this._handleMouseButton(pos.x, pos.y, true, bmask); |
1086 | this._handleMouseButton(pos.x, pos.y, false, bmask); | |
1087 | } | |
1088 | ||
1089 | _handleGesture(ev) { | |
1090 | let magnitude; | |
1091 | ||
1092 | let pos = clientToElement(ev.detail.clientX, ev.detail.clientY, | |
1093 | this._canvas); | |
1094 | switch (ev.type) { | |
1095 | case 'gesturestart': | |
1096 | switch (ev.detail.type) { | |
1097 | case 'onetap': | |
1098 | this._handleTapEvent(ev, 0x1); | |
1099 | break; | |
1100 | case 'twotap': | |
1101 | this._handleTapEvent(ev, 0x4); | |
1102 | break; | |
1103 | case 'threetap': | |
1104 | this._handleTapEvent(ev, 0x2); | |
1105 | break; | |
1106 | case 'drag': | |
32ed7c67 | 1107 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1108 | this._handleMouseButton(pos.x, pos.y, true, 0x1); |
1109 | break; | |
1110 | case 'longpress': | |
32ed7c67 | 1111 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1112 | this._handleMouseButton(pos.x, pos.y, true, 0x4); |
1113 | break; | |
1114 | ||
1115 | case 'twodrag': | |
1116 | this._gestureLastMagnitudeX = ev.detail.magnitudeX; | |
1117 | this._gestureLastMagnitudeY = ev.detail.magnitudeY; | |
32ed7c67 | 1118 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1119 | break; |
1120 | case 'pinch': | |
1121 | this._gestureLastMagnitudeX = Math.hypot(ev.detail.magnitudeX, | |
1122 | ev.detail.magnitudeY); | |
32ed7c67 | 1123 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1124 | break; |
1125 | } | |
1126 | break; | |
1127 | ||
1128 | case 'gesturemove': | |
1129 | switch (ev.detail.type) { | |
1130 | case 'onetap': | |
1131 | case 'twotap': | |
1132 | case 'threetap': | |
1133 | break; | |
1134 | case 'drag': | |
1135 | case 'longpress': | |
32ed7c67 | 1136 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1137 | break; |
1138 | case 'twodrag': | |
1139 | // Always scroll in the same position. | |
1140 | // We don't know if the mouse was moved so we need to move it | |
1141 | // every update. | |
32ed7c67 | 1142 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1143 | while ((ev.detail.magnitudeY - this._gestureLastMagnitudeY) > GESTURE_SCRLSENS) { |
1144 | this._handleMouseButton(pos.x, pos.y, true, 0x8); | |
1145 | this._handleMouseButton(pos.x, pos.y, false, 0x8); | |
1146 | this._gestureLastMagnitudeY += GESTURE_SCRLSENS; | |
1147 | } | |
1148 | while ((ev.detail.magnitudeY - this._gestureLastMagnitudeY) < -GESTURE_SCRLSENS) { | |
1149 | this._handleMouseButton(pos.x, pos.y, true, 0x10); | |
1150 | this._handleMouseButton(pos.x, pos.y, false, 0x10); | |
1151 | this._gestureLastMagnitudeY -= GESTURE_SCRLSENS; | |
1152 | } | |
1153 | while ((ev.detail.magnitudeX - this._gestureLastMagnitudeX) > GESTURE_SCRLSENS) { | |
1154 | this._handleMouseButton(pos.x, pos.y, true, 0x20); | |
1155 | this._handleMouseButton(pos.x, pos.y, false, 0x20); | |
1156 | this._gestureLastMagnitudeX += GESTURE_SCRLSENS; | |
1157 | } | |
1158 | while ((ev.detail.magnitudeX - this._gestureLastMagnitudeX) < -GESTURE_SCRLSENS) { | |
1159 | this._handleMouseButton(pos.x, pos.y, true, 0x40); | |
1160 | this._handleMouseButton(pos.x, pos.y, false, 0x40); | |
1161 | this._gestureLastMagnitudeX -= GESTURE_SCRLSENS; | |
1162 | } | |
1163 | break; | |
1164 | case 'pinch': | |
1165 | // Always scroll in the same position. | |
1166 | // We don't know if the mouse was moved so we need to move it | |
1167 | // every update. | |
32ed7c67 | 1168 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1169 | magnitude = Math.hypot(ev.detail.magnitudeX, ev.detail.magnitudeY); |
1170 | if (Math.abs(magnitude - this._gestureLastMagnitudeX) > GESTURE_ZOOMSENS) { | |
1171 | this._handleKeyEvent(KeyTable.XK_Control_L, "ControlLeft", true); | |
1172 | while ((magnitude - this._gestureLastMagnitudeX) > GESTURE_ZOOMSENS) { | |
1173 | this._handleMouseButton(pos.x, pos.y, true, 0x8); | |
1174 | this._handleMouseButton(pos.x, pos.y, false, 0x8); | |
1175 | this._gestureLastMagnitudeX += GESTURE_ZOOMSENS; | |
1176 | } | |
1177 | while ((magnitude - this._gestureLastMagnitudeX) < -GESTURE_ZOOMSENS) { | |
1178 | this._handleMouseButton(pos.x, pos.y, true, 0x10); | |
1179 | this._handleMouseButton(pos.x, pos.y, false, 0x10); | |
1180 | this._gestureLastMagnitudeX -= GESTURE_ZOOMSENS; | |
1181 | } | |
1182 | } | |
1183 | this._handleKeyEvent(KeyTable.XK_Control_L, "ControlLeft", false); | |
32ed7c67 | 1184 | break; |
8be924c9 PO |
1185 | } |
1186 | break; | |
1187 | ||
1188 | case 'gestureend': | |
1189 | switch (ev.detail.type) { | |
1190 | case 'onetap': | |
1191 | case 'twotap': | |
1192 | case 'threetap': | |
1193 | case 'pinch': | |
1194 | case 'twodrag': | |
1195 | break; | |
1196 | case 'drag': | |
32ed7c67 | 1197 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1198 | this._handleMouseButton(pos.x, pos.y, false, 0x1); |
1199 | break; | |
1200 | case 'longpress': | |
32ed7c67 | 1201 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1202 | this._handleMouseButton(pos.x, pos.y, false, 0x4); |
1203 | break; | |
1204 | } | |
1205 | break; | |
1206 | } | |
1207 | } | |
1208 | ||
6d6f0db0 | 1209 | // Message Handlers |
27e77d46 | 1210 | |
00674385 | 1211 | _negotiateProtocolVersion() { |
c13df5ae PO |
1212 | if (this._sock.rQwait("version", 12)) { |
1213 | return false; | |
6d6f0db0 | 1214 | } |
32df3fdb | 1215 | |
2b5f94fa | 1216 | const sversion = this._sock.rQshiftStr(12).substr(4, 7); |
6d6f0db0 | 1217 | Log.Info("Server ProtocolVersion: " + sversion); |
e7dec527 | 1218 | let isRepeater = 0; |
6d6f0db0 SR |
1219 | switch (sversion) { |
1220 | case "000.000": // UltraVNC repeater | |
e7dec527 | 1221 | isRepeater = 1; |
6d6f0db0 SR |
1222 | break; |
1223 | case "003.003": | |
1224 | case "003.006": // UltraVNC | |
1225 | case "003.889": // Apple Remote Desktop | |
e7dec527 | 1226 | this._rfbVersion = 3.3; |
6d6f0db0 SR |
1227 | break; |
1228 | case "003.007": | |
e7dec527 | 1229 | this._rfbVersion = 3.7; |
6d6f0db0 SR |
1230 | break; |
1231 | case "003.008": | |
1232 | case "004.000": // Intel AMT KVM | |
1233 | case "004.001": // RealVNC 4.6 | |
1234 | case "005.000": // RealVNC 5.3 | |
e7dec527 | 1235 | this._rfbVersion = 3.8; |
6d6f0db0 SR |
1236 | break; |
1237 | default: | |
d472f3f1 | 1238 | return this._fail("Invalid server version " + sversion); |
6d6f0db0 | 1239 | } |
8db09746 | 1240 | |
e7dec527 | 1241 | if (isRepeater) { |
2b5f94fa | 1242 | let repeaterID = "ID:" + this._repeaterID; |
6d6f0db0 SR |
1243 | while (repeaterID.length < 250) { |
1244 | repeaterID += "\0"; | |
b1dee947 | 1245 | } |
ea858bfa | 1246 | this._sock.sendString(repeaterID); |
6d6f0db0 SR |
1247 | return true; |
1248 | } | |
b1dee947 | 1249 | |
e7dec527 SM |
1250 | if (this._rfbVersion > this._rfbMaxVersion) { |
1251 | this._rfbVersion = this._rfbMaxVersion; | |
6d6f0db0 | 1252 | } |
b1dee947 | 1253 | |
e7dec527 SM |
1254 | const cversion = "00" + parseInt(this._rfbVersion, 10) + |
1255 | ".00" + ((this._rfbVersion * 10) % 10); | |
ea858bfa | 1256 | this._sock.sendString("RFB " + cversion + "\n"); |
6d6f0db0 | 1257 | Log.Debug('Sent ProtocolVersion: ' + cversion); |
b1dee947 | 1258 | |
e7dec527 | 1259 | this._rfbInitState = 'Security'; |
0e4808bf | 1260 | } |
b1dee947 | 1261 | |
00674385 | 1262 | _negotiateSecurity() { |
e7dec527 | 1263 | if (this._rfbVersion >= 3.7) { |
6d6f0db0 | 1264 | // Server sends supported list, client decides |
e7dec527 SM |
1265 | const numTypes = this._sock.rQshift8(); |
1266 | if (this._sock.rQwait("security type", numTypes, 1)) { return false; } | |
b1dee947 | 1267 | |
e7dec527 SM |
1268 | if (numTypes === 0) { |
1269 | this._rfbInitState = "SecurityReason"; | |
1270 | this._securityContext = "no security types"; | |
1271 | this._securityStatus = 1; | |
00674385 | 1272 | return this._initMsg(); |
6d6f0db0 SR |
1273 | } |
1274 | ||
e7dec527 | 1275 | const types = this._sock.rQshiftBytes(numTypes); |
6d6f0db0 SR |
1276 | Log.Debug("Server security types: " + types); |
1277 | ||
1278 | // Look for each auth in preferred order | |
5b5b7474 | 1279 | if (types.includes(1)) { |
e7dec527 | 1280 | this._rfbAuthScheme = 1; // None |
5b5b7474 | 1281 | } else if (types.includes(22)) { |
e7dec527 | 1282 | this._rfbAuthScheme = 22; // XVP |
5b5b7474 | 1283 | } else if (types.includes(16)) { |
e7dec527 | 1284 | this._rfbAuthScheme = 16; // Tight |
5b5b7474 | 1285 | } else if (types.includes(2)) { |
e7dec527 | 1286 | this._rfbAuthScheme = 2; // VNC Auth |
5b5b7474 | 1287 | } else if (types.includes(19)) { |
e7dec527 | 1288 | this._rfbAuthScheme = 19; // VeNCrypt Auth |
6d6f0db0 | 1289 | } else { |
d472f3f1 | 1290 | return this._fail("Unsupported security types (types: " + types + ")"); |
8db09746 | 1291 | } |
b1dee947 | 1292 | |
e7dec527 | 1293 | this._sock.send([this._rfbAuthScheme]); |
6d6f0db0 SR |
1294 | } else { |
1295 | // Server decides | |
1296 | if (this._sock.rQwait("security scheme", 4)) { return false; } | |
e7dec527 | 1297 | this._rfbAuthScheme = this._sock.rQshift32(); |
3bb15d4a | 1298 | |
e7dec527 SM |
1299 | if (this._rfbAuthScheme == 0) { |
1300 | this._rfbInitState = "SecurityReason"; | |
1301 | this._securityContext = "authentication scheme"; | |
1302 | this._securityStatus = 1; | |
00674385 | 1303 | return this._initMsg(); |
3bb15d4a | 1304 | } |
6d6f0db0 | 1305 | } |
b1dee947 | 1306 | |
e7dec527 SM |
1307 | this._rfbInitState = 'Authentication'; |
1308 | Log.Debug('Authenticating using scheme: ' + this._rfbAuthScheme); | |
b1dee947 | 1309 | |
00674385 | 1310 | return this._initMsg(); // jump to authentication |
0e4808bf | 1311 | } |
b1dee947 | 1312 | |
00674385 | 1313 | _handleSecurityReason() { |
d472f3f1 SM |
1314 | if (this._sock.rQwait("reason length", 4)) { |
1315 | return false; | |
1316 | } | |
2b5f94fa | 1317 | const strlen = this._sock.rQshift32(); |
d472f3f1 SM |
1318 | let reason = ""; |
1319 | ||
1320 | if (strlen > 0) { | |
3bb15d4a | 1321 | if (this._sock.rQwait("reason", strlen, 4)) { return false; } |
d472f3f1 SM |
1322 | reason = this._sock.rQshiftStr(strlen); |
1323 | } | |
1324 | ||
1325 | if (reason !== "") { | |
2b5f94fa | 1326 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 1327 | "securityfailure", |
e7dec527 | 1328 | { detail: { status: this._securityStatus, |
3bb15d4a | 1329 | reason: reason } })); |
d472f3f1 | 1330 | |
3bb15d4a | 1331 | return this._fail("Security negotiation failed on " + |
e7dec527 | 1332 | this._securityContext + |
d472f3f1 SM |
1333 | " (reason: " + reason + ")"); |
1334 | } else { | |
2b5f94fa | 1335 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 1336 | "securityfailure", |
e7dec527 | 1337 | { detail: { status: this._securityStatus } })); |
d472f3f1 | 1338 | |
3bb15d4a | 1339 | return this._fail("Security negotiation failed on " + |
e7dec527 | 1340 | this._securityContext); |
d472f3f1 | 1341 | } |
0e4808bf | 1342 | } |
d472f3f1 | 1343 | |
6d6f0db0 | 1344 | // authentication |
00674385 | 1345 | _negotiateXvpAuth() { |
e7dec527 SM |
1346 | if (this._rfbCredentials.username === undefined || |
1347 | this._rfbCredentials.password === undefined || | |
1348 | this._rfbCredentials.target === undefined) { | |
2b5f94fa JD |
1349 | this.dispatchEvent(new CustomEvent( |
1350 | "credentialsrequired", | |
1351 | { detail: { types: ["username", "password", "target"] } })); | |
7b536961 | 1352 | return false; |
6d6f0db0 | 1353 | } |
0ee5ca6e | 1354 | |
e7dec527 SM |
1355 | const xvpAuthStr = String.fromCharCode(this._rfbCredentials.username.length) + |
1356 | String.fromCharCode(this._rfbCredentials.target.length) + | |
1357 | this._rfbCredentials.username + | |
1358 | this._rfbCredentials.target; | |
ea858bfa | 1359 | this._sock.sendString(xvpAuthStr); |
e7dec527 | 1360 | this._rfbAuthScheme = 2; |
00674385 | 1361 | return this._negotiateAuthentication(); |
0e4808bf | 1362 | } |
6d6f0db0 | 1363 | |
a1015d8d | 1364 | // VeNCrypt authentication, currently only supports version 0.2 and only Plain subtype |
00674385 | 1365 | _negotiateVeNCryptAuth() { |
a1015d8d FS |
1366 | |
1367 | // waiting for VeNCrypt version | |
e7dec527 | 1368 | if (this._rfbVeNCryptState == 0) { |
a1015d8d FS |
1369 | if (this._sock.rQwait("vencrypt version", 2)) { return false; } |
1370 | ||
1371 | const major = this._sock.rQshift8(); | |
1372 | const minor = this._sock.rQshift8(); | |
1373 | ||
1374 | if (!(major == 0 && minor == 2)) { | |
1375 | return this._fail("Unsupported VeNCrypt version " + major + "." + minor); | |
1376 | } | |
1377 | ||
1378 | this._sock.send([0, 2]); | |
e7dec527 | 1379 | this._rfbVeNCryptState = 1; |
a1015d8d FS |
1380 | } |
1381 | ||
1382 | // waiting for ACK | |
e7dec527 | 1383 | if (this._rfbVeNCryptState == 1) { |
a1015d8d FS |
1384 | if (this._sock.rQwait("vencrypt ack", 1)) { return false; } |
1385 | ||
1386 | const res = this._sock.rQshift8(); | |
1387 | ||
1388 | if (res != 0) { | |
1389 | return this._fail("VeNCrypt failure " + res); | |
1390 | } | |
1391 | ||
e7dec527 | 1392 | this._rfbVeNCryptState = 2; |
a1015d8d FS |
1393 | } |
1394 | // must fall through here (i.e. no "else if"), beacause we may have already received | |
1395 | // the subtypes length and won't be called again | |
1396 | ||
e7dec527 | 1397 | if (this._rfbVeNCryptState == 2) { // waiting for subtypes length |
a1015d8d FS |
1398 | if (this._sock.rQwait("vencrypt subtypes length", 1)) { return false; } |
1399 | ||
e7dec527 SM |
1400 | const subtypesLength = this._sock.rQshift8(); |
1401 | if (subtypesLength < 1) { | |
a1015d8d FS |
1402 | return this._fail("VeNCrypt subtypes empty"); |
1403 | } | |
1404 | ||
e7dec527 SM |
1405 | this._rfbVeNCryptSubtypesLength = subtypesLength; |
1406 | this._rfbVeNCryptState = 3; | |
a1015d8d FS |
1407 | } |
1408 | ||
1409 | // waiting for subtypes list | |
e7dec527 SM |
1410 | if (this._rfbVeNCryptState == 3) { |
1411 | if (this._sock.rQwait("vencrypt subtypes", 4 * this._rfbVeNCryptSubtypesLength)) { return false; } | |
a1015d8d FS |
1412 | |
1413 | const subtypes = []; | |
e7dec527 | 1414 | for (let i = 0; i < this._rfbVeNCryptSubtypesLength; i++) { |
a1015d8d FS |
1415 | subtypes.push(this._sock.rQshift32()); |
1416 | } | |
1417 | ||
1418 | // 256 = Plain subtype | |
1419 | if (subtypes.indexOf(256) != -1) { | |
1420 | // 0x100 = 256 | |
1421 | this._sock.send([0, 0, 1, 0]); | |
e7dec527 | 1422 | this._rfbVeNCryptState = 4; |
a1015d8d FS |
1423 | } else { |
1424 | return this._fail("VeNCrypt Plain subtype not offered by server"); | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | // negotiated Plain subtype, server waits for password | |
e7dec527 SM |
1429 | if (this._rfbVeNCryptState == 4) { |
1430 | if (!this._rfbCredentials.username || | |
1431 | !this._rfbCredentials.password) { | |
a1015d8d FS |
1432 | this.dispatchEvent(new CustomEvent( |
1433 | "credentialsrequired", | |
1434 | { detail: { types: ["username", "password"] } })); | |
1435 | return false; | |
1436 | } | |
1437 | ||
e7dec527 SM |
1438 | const user = encodeUTF8(this._rfbCredentials.username); |
1439 | const pass = encodeUTF8(this._rfbCredentials.password); | |
a1015d8d | 1440 | |
18593154 | 1441 | this._sock.send([ |
1442 | (user.length >> 24) & 0xFF, | |
1443 | (user.length >> 16) & 0xFF, | |
1444 | (user.legnth >> 8) & 0xFF, | |
1445 | user.length & 0xFF | |
1446 | ]); | |
1447 | this._sock.send([ | |
1448 | (pass.length >> 24) & 0xFF, | |
1449 | (pass.length >> 16) & 0xFF, | |
1450 | (pass.legnth >> 8) & 0xFF, | |
1451 | pass.length & 0xFF | |
1452 | ]); | |
ea858bfa SM |
1453 | this._sock.sendString(user); |
1454 | this._sock.sendString(pass); | |
a1015d8d | 1455 | |
e7dec527 | 1456 | this._rfbInitState = "SecurityResult"; |
a1015d8d FS |
1457 | return true; |
1458 | } | |
1459 | } | |
1460 | ||
00674385 | 1461 | _negotiateStdVNCAuth() { |
abfe5b7a SM |
1462 | if (this._sock.rQwait("auth challenge", 16)) { return false; } |
1463 | ||
e7dec527 | 1464 | if (this._rfbCredentials.password === undefined) { |
2b5f94fa JD |
1465 | this.dispatchEvent(new CustomEvent( |
1466 | "credentialsrequired", | |
1467 | { detail: { types: ["password"] } })); | |
6d6f0db0 SR |
1468 | return false; |
1469 | } | |
b1dee947 | 1470 | |
6d6f0db0 | 1471 | // TODO(directxman12): make genDES not require an Array |
2b5f94fa | 1472 | const challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16)); |
e7dec527 | 1473 | const response = RFB.genDES(this._rfbCredentials.password, challenge); |
6d6f0db0 | 1474 | this._sock.send(response); |
e7dec527 | 1475 | this._rfbInitState = "SecurityResult"; |
6d6f0db0 | 1476 | return true; |
0e4808bf | 1477 | } |
6d6f0db0 | 1478 | |
00674385 | 1479 | _negotiateTightUnixAuth() { |
e7dec527 SM |
1480 | if (this._rfbCredentials.username === undefined || |
1481 | this._rfbCredentials.password === undefined) { | |
1c982614 CKB |
1482 | this.dispatchEvent(new CustomEvent( |
1483 | "credentialsrequired", | |
1484 | { detail: { types: ["username", "password"] } })); | |
1485 | return false; | |
1486 | } | |
1487 | ||
e7dec527 SM |
1488 | this._sock.send([0, 0, 0, this._rfbCredentials.username.length]); |
1489 | this._sock.send([0, 0, 0, this._rfbCredentials.password.length]); | |
ea858bfa SM |
1490 | this._sock.sendString(this._rfbCredentials.username); |
1491 | this._sock.sendString(this._rfbCredentials.password); | |
e7dec527 | 1492 | this._rfbInitState = "SecurityResult"; |
1c982614 CKB |
1493 | return true; |
1494 | } | |
1495 | ||
00674385 | 1496 | _negotiateTightTunnels(numTunnels) { |
2b5f94fa | 1497 | const clientSupportedTunnelTypes = { |
6d6f0db0 SR |
1498 | 0: { vendor: 'TGHT', signature: 'NOTUNNEL' } |
1499 | }; | |
2b5f94fa | 1500 | const serverSupportedTunnelTypes = {}; |
6d6f0db0 | 1501 | // receive tunnel capabilities |
2b5f94fa | 1502 | for (let i = 0; i < numTunnels; i++) { |
e7dec527 SM |
1503 | const capCode = this._sock.rQshift32(); |
1504 | const capVendor = this._sock.rQshiftStr(4); | |
1505 | const capSignature = this._sock.rQshiftStr(8); | |
1506 | serverSupportedTunnelTypes[capCode] = { vendor: capVendor, signature: capSignature }; | |
6d6f0db0 SR |
1507 | } |
1508 | ||
e6bad200 PO |
1509 | Log.Debug("Server Tight tunnel types: " + serverSupportedTunnelTypes); |
1510 | ||
8f47bd29 PO |
1511 | // Siemens touch panels have a VNC server that supports NOTUNNEL, |
1512 | // but forgets to advertise it. Try to detect such servers by | |
1513 | // looking for their custom tunnel type. | |
1514 | if (serverSupportedTunnelTypes[1] && | |
1515 | (serverSupportedTunnelTypes[1].vendor === "SICR") && | |
1516 | (serverSupportedTunnelTypes[1].signature === "SCHANNEL")) { | |
1517 | Log.Debug("Detected Siemens server. Assuming NOTUNNEL support."); | |
1518 | serverSupportedTunnelTypes[0] = { vendor: 'TGHT', signature: 'NOTUNNEL' }; | |
1519 | } | |
1520 | ||
6d6f0db0 SR |
1521 | // choose the notunnel type |
1522 | if (serverSupportedTunnelTypes[0]) { | |
1523 | if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor || | |
1524 | serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) { | |
d472f3f1 | 1525 | return this._fail("Client's tunnel type had the incorrect " + |
6d6f0db0 | 1526 | "vendor or signature"); |
b1dee947 | 1527 | } |
e6bad200 | 1528 | Log.Debug("Selected tunnel type: " + clientSupportedTunnelTypes[0]); |
6d6f0db0 SR |
1529 | this._sock.send([0, 0, 0, 0]); // use NOTUNNEL |
1530 | return false; // wait until we receive the sub auth count to continue | |
1531 | } else { | |
d472f3f1 | 1532 | return this._fail("Server wanted tunnels, but doesn't support " + |
6d6f0db0 SR |
1533 | "the notunnel type"); |
1534 | } | |
0e4808bf | 1535 | } |
b1dee947 | 1536 | |
00674385 | 1537 | _negotiateTightAuth() { |
e7dec527 | 1538 | if (!this._rfbTightVNC) { // first pass, do the tunnel negotiation |
6d6f0db0 | 1539 | if (this._sock.rQwait("num tunnels", 4)) { return false; } |
2b5f94fa | 1540 | const numTunnels = this._sock.rQshift32(); |
6d6f0db0 | 1541 | if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; } |
c00ee156 | 1542 | |
e7dec527 | 1543 | this._rfbTightVNC = true; |
b1dee947 | 1544 | |
6d6f0db0 | 1545 | if (numTunnels > 0) { |
00674385 | 1546 | this._negotiateTightTunnels(numTunnels); |
6d6f0db0 | 1547 | return false; // wait until we receive the sub auth to continue |
b1dee947 | 1548 | } |
6d6f0db0 | 1549 | } |
b1dee947 | 1550 | |
6d6f0db0 SR |
1551 | // second pass, do the sub-auth negotiation |
1552 | if (this._sock.rQwait("sub auth count", 4)) { return false; } | |
2b5f94fa | 1553 | const subAuthCount = this._sock.rQshift32(); |
6d6f0db0 | 1554 | if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected |
e7dec527 | 1555 | this._rfbInitState = 'SecurityResult'; |
6d6f0db0 SR |
1556 | return true; |
1557 | } | |
b1dee947 | 1558 | |
6d6f0db0 | 1559 | if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; } |
b1dee947 | 1560 | |
2b5f94fa | 1561 | const clientSupportedTypes = { |
6d6f0db0 | 1562 | 'STDVNOAUTH__': 1, |
1c982614 CKB |
1563 | 'STDVVNCAUTH_': 2, |
1564 | 'TGHTULGNAUTH': 129 | |
6d6f0db0 | 1565 | }; |
b1dee947 | 1566 | |
2b5f94fa | 1567 | const serverSupportedTypes = []; |
95eb681b | 1568 | |
2b5f94fa | 1569 | for (let i = 0; i < subAuthCount; i++) { |
8727f598 | 1570 | this._sock.rQshift32(); // capNum |
2b5f94fa | 1571 | const capabilities = this._sock.rQshiftStr(12); |
6d6f0db0 SR |
1572 | serverSupportedTypes.push(capabilities); |
1573 | } | |
d86cc2d9 | 1574 | |
e6bad200 PO |
1575 | Log.Debug("Server Tight authentication types: " + serverSupportedTypes); |
1576 | ||
2b5f94fa | 1577 | for (let authType in clientSupportedTypes) { |
6d6f0db0 SR |
1578 | if (serverSupportedTypes.indexOf(authType) != -1) { |
1579 | this._sock.send([0, 0, 0, clientSupportedTypes[authType]]); | |
e6bad200 | 1580 | Log.Debug("Selected authentication type: " + authType); |
d86cc2d9 | 1581 | |
6d6f0db0 SR |
1582 | switch (authType) { |
1583 | case 'STDVNOAUTH__': // no auth | |
e7dec527 | 1584 | this._rfbInitState = 'SecurityResult'; |
6d6f0db0 SR |
1585 | return true; |
1586 | case 'STDVVNCAUTH_': // VNC auth | |
e7dec527 | 1587 | this._rfbAuthScheme = 2; |
00674385 | 1588 | return this._initMsg(); |
1c982614 | 1589 | case 'TGHTULGNAUTH': // UNIX auth |
e7dec527 | 1590 | this._rfbAuthScheme = 129; |
00674385 | 1591 | return this._initMsg(); |
6d6f0db0 | 1592 | default: |
d472f3f1 SM |
1593 | return this._fail("Unsupported tiny auth scheme " + |
1594 | "(scheme: " + authType + ")"); | |
b1dee947 SR |
1595 | } |
1596 | } | |
6d6f0db0 | 1597 | } |
b1dee947 | 1598 | |
d472f3f1 | 1599 | return this._fail("No supported sub-auth types!"); |
0e4808bf | 1600 | } |
6d6f0db0 | 1601 | |
00674385 | 1602 | _negotiateAuthentication() { |
e7dec527 | 1603 | switch (this._rfbAuthScheme) { |
6d6f0db0 | 1604 | case 1: // no auth |
e7dec527 SM |
1605 | if (this._rfbVersion >= 3.8) { |
1606 | this._rfbInitState = 'SecurityResult'; | |
6d6f0db0 SR |
1607 | return true; |
1608 | } | |
e7dec527 | 1609 | this._rfbInitState = 'ClientInitialisation'; |
00674385 | 1610 | return this._initMsg(); |
95eb681b | 1611 | |
6d6f0db0 | 1612 | case 22: // XVP auth |
00674385 | 1613 | return this._negotiateXvpAuth(); |
d86cc2d9 | 1614 | |
6d6f0db0 | 1615 | case 2: // VNC authentication |
00674385 | 1616 | return this._negotiateStdVNCAuth(); |
d86cc2d9 | 1617 | |
6d6f0db0 | 1618 | case 16: // TightVNC Security Type |
00674385 | 1619 | return this._negotiateTightAuth(); |
d86cc2d9 | 1620 | |
a1015d8d | 1621 | case 19: // VeNCrypt Security Type |
00674385 | 1622 | return this._negotiateVeNCryptAuth(); |
a1015d8d | 1623 | |
1c982614 | 1624 | case 129: // TightVNC UNIX Security Type |
00674385 | 1625 | return this._negotiateTightUnixAuth(); |
1c982614 | 1626 | |
6d6f0db0 | 1627 | default: |
d472f3f1 | 1628 | return this._fail("Unsupported auth scheme (scheme: " + |
e7dec527 | 1629 | this._rfbAuthScheme + ")"); |
6d6f0db0 | 1630 | } |
0e4808bf | 1631 | } |
6d6f0db0 | 1632 | |
00674385 | 1633 | _handleSecurityResult() { |
6d6f0db0 | 1634 | if (this._sock.rQwait('VNC auth response ', 4)) { return false; } |
d472f3f1 | 1635 | |
2b5f94fa | 1636 | const status = this._sock.rQshift32(); |
d472f3f1 SM |
1637 | |
1638 | if (status === 0) { // OK | |
e7dec527 | 1639 | this._rfbInitState = 'ClientInitialisation'; |
d472f3f1 | 1640 | Log.Debug('Authentication OK'); |
00674385 | 1641 | return this._initMsg(); |
d472f3f1 | 1642 | } else { |
e7dec527 SM |
1643 | if (this._rfbVersion >= 3.8) { |
1644 | this._rfbInitState = "SecurityReason"; | |
1645 | this._securityContext = "security result"; | |
1646 | this._securityStatus = status; | |
00674385 | 1647 | return this._initMsg(); |
d472f3f1 | 1648 | } else { |
2b5f94fa JD |
1649 | this.dispatchEvent(new CustomEvent( |
1650 | "securityfailure", | |
1651 | { detail: { status: status } })); | |
d472f3f1 SM |
1652 | |
1653 | return this._fail("Security handshake failed"); | |
1654 | } | |
6d6f0db0 | 1655 | } |
0e4808bf | 1656 | } |
6d6f0db0 | 1657 | |
00674385 | 1658 | _negotiateServerInit() { |
6d6f0db0 SR |
1659 | if (this._sock.rQwait("server initialization", 24)) { return false; } |
1660 | ||
1661 | /* Screen size */ | |
2b5f94fa JD |
1662 | const width = this._sock.rQshift16(); |
1663 | const height = this._sock.rQshift16(); | |
6d6f0db0 SR |
1664 | |
1665 | /* PIXEL_FORMAT */ | |
2b5f94fa JD |
1666 | const bpp = this._sock.rQshift8(); |
1667 | const depth = this._sock.rQshift8(); | |
e7dec527 SM |
1668 | const bigEndian = this._sock.rQshift8(); |
1669 | const trueColor = this._sock.rQshift8(); | |
1670 | ||
1671 | const redMax = this._sock.rQshift16(); | |
1672 | const greenMax = this._sock.rQshift16(); | |
1673 | const blueMax = this._sock.rQshift16(); | |
1674 | const redShift = this._sock.rQshift8(); | |
1675 | const greenShift = this._sock.rQshift8(); | |
1676 | const blueShift = this._sock.rQshift8(); | |
6d6f0db0 SR |
1677 | this._sock.rQskipBytes(3); // padding |
1678 | ||
1679 | // NB(directxman12): we don't want to call any callbacks or print messages until | |
1680 | // *after* we're past the point where we could backtrack | |
1681 | ||
1682 | /* Connection name/title */ | |
e7dec527 SM |
1683 | const nameLength = this._sock.rQshift32(); |
1684 | if (this._sock.rQwait('server init name', nameLength, 24)) { return false; } | |
1685 | let name = this._sock.rQshiftStr(nameLength); | |
2cf82a5c | 1686 | name = decodeUTF8(name, true); |
6d6f0db0 | 1687 | |
e7dec527 SM |
1688 | if (this._rfbTightVNC) { |
1689 | if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + nameLength)) { return false; } | |
6d6f0db0 | 1690 | // In TightVNC mode, ServerInit message is extended |
2b5f94fa JD |
1691 | const numServerMessages = this._sock.rQshift16(); |
1692 | const numClientMessages = this._sock.rQshift16(); | |
1693 | const numEncodings = this._sock.rQshift16(); | |
6d6f0db0 SR |
1694 | this._sock.rQskipBytes(2); // padding |
1695 | ||
2b5f94fa | 1696 | const totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16; |
e7dec527 | 1697 | if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + nameLength)) { return false; } |
6d6f0db0 SR |
1698 | |
1699 | // we don't actually do anything with the capability information that TIGHT sends, | |
1700 | // so we just skip the all of this. | |
1701 | ||
1702 | // TIGHT server message capabilities | |
1703 | this._sock.rQskipBytes(16 * numServerMessages); | |
1704 | ||
1705 | // TIGHT client message capabilities | |
1706 | this._sock.rQskipBytes(16 * numClientMessages); | |
1707 | ||
1708 | // TIGHT encoding capabilities | |
1709 | this._sock.rQskipBytes(16 * numEncodings); | |
1710 | } | |
d86cc2d9 | 1711 | |
6d6f0db0 SR |
1712 | // NB(directxman12): these are down here so that we don't run them multiple times |
1713 | // if we backtrack | |
91d5c625 | 1714 | Log.Info("Screen: " + width + "x" + height + |
6d6f0db0 | 1715 | ", bpp: " + bpp + ", depth: " + depth + |
e7dec527 SM |
1716 | ", bigEndian: " + bigEndian + |
1717 | ", trueColor: " + trueColor + | |
1718 | ", redMax: " + redMax + | |
1719 | ", greenMax: " + greenMax + | |
1720 | ", blueMax: " + blueMax + | |
1721 | ", redShift: " + redShift + | |
1722 | ", greenShift: " + greenShift + | |
1723 | ", blueShift: " + blueShift); | |
6d6f0db0 | 1724 | |
6d6f0db0 | 1725 | // we're past the point where we could backtrack, so it's safe to call this |
ce66b469 | 1726 | this._setDesktopName(name); |
91d5c625 | 1727 | this._resize(width, height); |
b1dee947 | 1728 | |
747b4623 | 1729 | if (!this._viewOnly) { this._keyboard.grab(); } |
b1dee947 | 1730 | |
e7dec527 | 1731 | this._fbDepth = 24; |
5a5f5ada | 1732 | |
e7dec527 | 1733 | if (this._fbName === "Intel(r) AMT KVM") { |
5a5f5ada | 1734 | Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode."); |
e7dec527 | 1735 | this._fbDepth = 8; |
5a5f5ada PO |
1736 | } |
1737 | ||
e7dec527 | 1738 | RFB.messages.pixelFormat(this._sock, this._fbDepth, true); |
49a81837 | 1739 | this._sendEncodings(); |
e7dec527 | 1740 | RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fbWidth, this._fbHeight); |
6d6f0db0 | 1741 | |
6d6f0db0 SR |
1742 | this._updateConnectionState('connected'); |
1743 | return true; | |
0e4808bf | 1744 | } |
6d6f0db0 | 1745 | |
0e4808bf | 1746 | _sendEncodings() { |
2b5f94fa | 1747 | const encs = []; |
49a81837 PO |
1748 | |
1749 | // In preference order | |
1750 | encs.push(encodings.encodingCopyRect); | |
5a5f5ada | 1751 | // Only supported with full depth support |
e7dec527 | 1752 | if (this._fbDepth == 24) { |
5a5f5ada | 1753 | encs.push(encodings.encodingTight); |
2c813a33 | 1754 | encs.push(encodings.encodingTightPNG); |
5a5f5ada PO |
1755 | encs.push(encodings.encodingHextile); |
1756 | encs.push(encodings.encodingRRE); | |
1757 | } | |
49a81837 PO |
1758 | encs.push(encodings.encodingRaw); |
1759 | ||
1760 | // Psuedo-encoding settings | |
efd1f8a4 | 1761 | encs.push(encodings.pseudoEncodingQualityLevel0 + this._qualityLevel); |
479d8cef | 1762 | encs.push(encodings.pseudoEncodingCompressLevel0 + this._compressionLevel); |
49a81837 PO |
1763 | |
1764 | encs.push(encodings.pseudoEncodingDesktopSize); | |
1765 | encs.push(encodings.pseudoEncodingLastRect); | |
1766 | encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent); | |
1767 | encs.push(encodings.pseudoEncodingExtendedDesktopSize); | |
1768 | encs.push(encodings.pseudoEncodingXvp); | |
1769 | encs.push(encodings.pseudoEncodingFence); | |
1770 | encs.push(encodings.pseudoEncodingContinuousUpdates); | |
ce66b469 | 1771 | encs.push(encodings.pseudoEncodingDesktopName); |
f73fdc3e | 1772 | encs.push(encodings.pseudoEncodingExtendedClipboard); |
49a81837 | 1773 | |
e7dec527 | 1774 | if (this._fbDepth == 24) { |
296ba51f | 1775 | encs.push(encodings.pseudoEncodingVMwareCursor); |
49a81837 PO |
1776 | encs.push(encodings.pseudoEncodingCursor); |
1777 | } | |
1778 | ||
1779 | RFB.messages.clientEncodings(this._sock, encs); | |
0e4808bf | 1780 | } |
49a81837 | 1781 | |
6d6f0db0 SR |
1782 | /* RFB protocol initialization states: |
1783 | * ProtocolVersion | |
1784 | * Security | |
1785 | * Authentication | |
1786 | * SecurityResult | |
1787 | * ClientInitialization - not triggered by server message | |
1788 | * ServerInitialization | |
1789 | */ | |
00674385 | 1790 | _initMsg() { |
e7dec527 | 1791 | switch (this._rfbInitState) { |
6d6f0db0 | 1792 | case 'ProtocolVersion': |
00674385 | 1793 | return this._negotiateProtocolVersion(); |
6d6f0db0 SR |
1794 | |
1795 | case 'Security': | |
00674385 | 1796 | return this._negotiateSecurity(); |
6d6f0db0 SR |
1797 | |
1798 | case 'Authentication': | |
00674385 | 1799 | return this._negotiateAuthentication(); |
6d6f0db0 SR |
1800 | |
1801 | case 'SecurityResult': | |
00674385 | 1802 | return this._handleSecurityResult(); |
6d6f0db0 | 1803 | |
3bb15d4a | 1804 | case 'SecurityReason': |
00674385 | 1805 | return this._handleSecurityReason(); |
3bb15d4a | 1806 | |
6d6f0db0 SR |
1807 | case 'ClientInitialisation': |
1808 | this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation | |
e7dec527 | 1809 | this._rfbInitState = 'ServerInitialisation'; |
6d6f0db0 | 1810 | return true; |
b1dee947 | 1811 | |
6d6f0db0 | 1812 | case 'ServerInitialisation': |
00674385 | 1813 | return this._negotiateServerInit(); |
b1dee947 | 1814 | |
6d6f0db0 | 1815 | default: |
d472f3f1 | 1816 | return this._fail("Unknown init state (state: " + |
e7dec527 | 1817 | this._rfbInitState + ")"); |
6d6f0db0 | 1818 | } |
0e4808bf | 1819 | } |
b1dee947 | 1820 | |
00674385 | 1821 | _handleSetColourMapMsg() { |
6d6f0db0 | 1822 | Log.Debug("SetColorMapEntries"); |
b1dee947 | 1823 | |
d472f3f1 | 1824 | return this._fail("Unexpected SetColorMapEntries message"); |
0e4808bf | 1825 | } |
b1dee947 | 1826 | |
00674385 | 1827 | _handleServerCutText() { |
6d6f0db0 | 1828 | Log.Debug("ServerCutText"); |
b1dee947 | 1829 | |
6d6f0db0 | 1830 | if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; } |
f73fdc3e | 1831 | |
6d6f0db0 | 1832 | this._sock.rQskipBytes(3); // Padding |
b1dee947 | 1833 | |
f73fdc3e NL |
1834 | let length = this._sock.rQshift32(); |
1835 | length = toSigned32bit(length); | |
b4ff032e | 1836 | |
f73fdc3e | 1837 | if (this._sock.rQwait("ServerCutText content", Math.abs(length), 8)) { return false; } |
b4ff032e | 1838 | |
f73fdc3e NL |
1839 | if (length >= 0) { |
1840 | //Standard msg | |
1841 | const text = this._sock.rQshiftStr(length); | |
1842 | if (this._viewOnly) { | |
1843 | return true; | |
1844 | } | |
1845 | ||
1846 | this.dispatchEvent(new CustomEvent( | |
1847 | "clipboard", | |
1848 | { detail: { text: text } })); | |
1849 | ||
1850 | } else { | |
1851 | //Extended msg. | |
1852 | length = Math.abs(length); | |
1853 | const flags = this._sock.rQshift32(); | |
1854 | let formats = flags & 0x0000FFFF; | |
1855 | let actions = flags & 0xFF000000; | |
1856 | ||
1857 | let isCaps = (!!(actions & extendedClipboardActionCaps)); | |
1858 | if (isCaps) { | |
1859 | this._clipboardServerCapabilitiesFormats = {}; | |
1860 | this._clipboardServerCapabilitiesActions = {}; | |
1861 | ||
1862 | // Update our server capabilities for Formats | |
1863 | for (let i = 0; i <= 15; i++) { | |
1864 | let index = 1 << i; | |
1865 | ||
1866 | // Check if format flag is set. | |
1867 | if ((formats & index)) { | |
1868 | this._clipboardServerCapabilitiesFormats[index] = true; | |
1869 | // We don't send unsolicited clipboard, so we | |
1870 | // ignore the size | |
1871 | this._sock.rQshift32(); | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | // Update our server capabilities for Actions | |
1876 | for (let i = 24; i <= 31; i++) { | |
1877 | let index = 1 << i; | |
1878 | this._clipboardServerCapabilitiesActions[index] = !!(actions & index); | |
1879 | } | |
1880 | ||
1881 | /* Caps handling done, send caps with the clients | |
1882 | capabilities set as a response */ | |
1883 | let clientActions = [ | |
1884 | extendedClipboardActionCaps, | |
1885 | extendedClipboardActionRequest, | |
1886 | extendedClipboardActionPeek, | |
1887 | extendedClipboardActionNotify, | |
1888 | extendedClipboardActionProvide | |
1889 | ]; | |
1890 | RFB.messages.extendedClipboardCaps(this._sock, clientActions, {extendedClipboardFormatText: 0}); | |
1891 | ||
1892 | } else if (actions === extendedClipboardActionRequest) { | |
1893 | if (this._viewOnly) { | |
1894 | return true; | |
1895 | } | |
1896 | ||
1897 | // Check if server has told us it can handle Provide and there is clipboard data to send. | |
1898 | if (this._clipboardText != null && | |
1899 | this._clipboardServerCapabilitiesActions[extendedClipboardActionProvide]) { | |
1900 | ||
1901 | if (formats & extendedClipboardFormatText) { | |
1902 | RFB.messages.extendedClipboardProvide(this._sock, [extendedClipboardFormatText], [this._clipboardText]); | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | } else if (actions === extendedClipboardActionPeek) { | |
1907 | if (this._viewOnly) { | |
1908 | return true; | |
1909 | } | |
1910 | ||
1911 | if (this._clipboardServerCapabilitiesActions[extendedClipboardActionNotify]) { | |
1912 | ||
1913 | if (this._clipboardText != null) { | |
1914 | RFB.messages.extendedClipboardNotify(this._sock, [extendedClipboardFormatText]); | |
1915 | } else { | |
1916 | RFB.messages.extendedClipboardNotify(this._sock, []); | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | } else if (actions === extendedClipboardActionNotify) { | |
1921 | if (this._viewOnly) { | |
1922 | return true; | |
1923 | } | |
1924 | ||
1925 | if (this._clipboardServerCapabilitiesActions[extendedClipboardActionRequest]) { | |
1926 | ||
1927 | if (formats & extendedClipboardFormatText) { | |
1928 | RFB.messages.extendedClipboardRequest(this._sock, [extendedClipboardFormatText]); | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | } else if (actions === extendedClipboardActionProvide) { | |
1933 | if (this._viewOnly) { | |
1934 | return true; | |
1935 | } | |
1936 | ||
1937 | if (!(formats & extendedClipboardFormatText)) { | |
1938 | return true; | |
1939 | } | |
1940 | // Ignore what we had in our clipboard client side. | |
1941 | this._clipboardText = null; | |
1942 | ||
1943 | // FIXME: Should probably verify that this data was actually requested | |
1944 | let zlibStream = this._sock.rQshiftBytes(length - 4); | |
1945 | let streamInflator = new Inflator(); | |
1946 | let textData = null; | |
b1dee947 | 1947 | |
f73fdc3e NL |
1948 | streamInflator.setInput(zlibStream); |
1949 | for (let i = 0; i <= 15; i++) { | |
1950 | let format = 1 << i; | |
1951 | ||
1952 | if (formats & format) { | |
1953 | ||
1954 | let size = 0x00; | |
1955 | let sizeArray = streamInflator.inflate(4); | |
1956 | ||
1957 | size |= (sizeArray[0] << 24); | |
1958 | size |= (sizeArray[1] << 16); | |
1959 | size |= (sizeArray[2] << 8); | |
1960 | size |= (sizeArray[3]); | |
1961 | let chunk = streamInflator.inflate(size); | |
1962 | ||
1963 | if (format === extendedClipboardFormatText) { | |
1964 | textData = chunk; | |
1965 | } | |
1966 | } | |
1967 | } | |
1968 | streamInflator.setInput(null); | |
1969 | ||
1970 | if (textData !== null) { | |
ceb8ef4e AT |
1971 | let tmpText = ""; |
1972 | for (let i = 0; i < textData.length; i++) { | |
1973 | tmpText += String.fromCharCode(textData[i]); | |
1974 | } | |
1975 | textData = tmpText; | |
f73fdc3e NL |
1976 | |
1977 | textData = decodeUTF8(textData); | |
1978 | if ((textData.length > 0) && "\0" === textData.charAt(textData.length - 1)) { | |
1979 | textData = textData.slice(0, -1); | |
1980 | } | |
1981 | ||
1982 | textData = textData.replace("\r\n", "\n"); | |
1983 | ||
1984 | this.dispatchEvent(new CustomEvent( | |
1985 | "clipboard", | |
1986 | { detail: { text: textData } })); | |
1987 | } | |
1988 | } else { | |
1989 | return this._fail("Unexpected action in extended clipboard message: " + actions); | |
1990 | } | |
1991 | } | |
6d6f0db0 | 1992 | return true; |
0e4808bf | 1993 | } |
b1dee947 | 1994 | |
00674385 | 1995 | _handleServerFenceMsg() { |
6d6f0db0 SR |
1996 | if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; } |
1997 | this._sock.rQskipBytes(3); // Padding | |
2b5f94fa JD |
1998 | let flags = this._sock.rQshift32(); |
1999 | let length = this._sock.rQshift8(); | |
b1dee947 | 2000 | |
6d6f0db0 | 2001 | if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; } |
b1dee947 | 2002 | |
6d6f0db0 SR |
2003 | if (length > 64) { |
2004 | Log.Warn("Bad payload length (" + length + ") in fence response"); | |
2005 | length = 64; | |
2006 | } | |
4e0c36dd | 2007 | |
2b5f94fa | 2008 | const payload = this._sock.rQshiftStr(length); |
b1dee947 | 2009 | |
6d6f0db0 | 2010 | this._supportsFence = true; |
b1dee947 | 2011 | |
6d6f0db0 SR |
2012 | /* |
2013 | * Fence flags | |
2014 | * | |
2015 | * (1<<0) - BlockBefore | |
2016 | * (1<<1) - BlockAfter | |
2017 | * (1<<2) - SyncNext | |
2018 | * (1<<31) - Request | |
2019 | */ | |
b1dee947 | 2020 | |
6d6f0db0 | 2021 | if (!(flags & (1<<31))) { |
d472f3f1 | 2022 | return this._fail("Unexpected fence response"); |
6d6f0db0 | 2023 | } |
b1dee947 | 2024 | |
6d6f0db0 SR |
2025 | // Filter out unsupported flags |
2026 | // FIXME: support syncNext | |
2027 | flags &= (1<<0) | (1<<1); | |
b1dee947 | 2028 | |
6d6f0db0 SR |
2029 | // BlockBefore and BlockAfter are automatically handled by |
2030 | // the fact that we process each incoming message | |
2031 | // synchronuosly. | |
2032 | RFB.messages.clientFence(this._sock, flags, payload); | |
f78a652e | 2033 | |
6d6f0db0 | 2034 | return true; |
0e4808bf | 2035 | } |
b1dee947 | 2036 | |
00674385 | 2037 | _handleXvpMsg() { |
6d6f0db0 | 2038 | if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; } |
8a189a62 | 2039 | this._sock.rQskipBytes(1); // Padding |
e7dec527 SM |
2040 | const xvpVer = this._sock.rQshift8(); |
2041 | const xvpMsg = this._sock.rQshift8(); | |
b1dee947 | 2042 | |
e7dec527 | 2043 | switch (xvpMsg) { |
6d6f0db0 | 2044 | case 0: // XVP_FAIL |
5b20d338 | 2045 | Log.Error("XVP Operation Failed"); |
6d6f0db0 SR |
2046 | break; |
2047 | case 1: // XVP_INIT | |
e7dec527 SM |
2048 | this._rfbXvpVer = xvpVer; |
2049 | Log.Info("XVP extensions enabled (version " + this._rfbXvpVer + ")"); | |
832be262 | 2050 | this._setCapability("power", true); |
6d6f0db0 SR |
2051 | break; |
2052 | default: | |
e7dec527 | 2053 | this._fail("Illegal server XVP message (msg: " + xvpMsg + ")"); |
6d6f0db0 SR |
2054 | break; |
2055 | } | |
b1dee947 | 2056 | |
6d6f0db0 | 2057 | return true; |
0e4808bf | 2058 | } |
3df13262 | 2059 | |
00674385 | 2060 | _normalMsg() { |
e7dec527 | 2061 | let msgType; |
6d6f0db0 | 2062 | if (this._FBU.rects > 0) { |
e7dec527 | 2063 | msgType = 0; |
6d6f0db0 | 2064 | } else { |
e7dec527 | 2065 | msgType = this._sock.rQshift8(); |
6d6f0db0 | 2066 | } |
76a86ff5 | 2067 | |
2b5f94fa | 2068 | let first, ret; |
e7dec527 | 2069 | switch (msgType) { |
6d6f0db0 | 2070 | case 0: // FramebufferUpdate |
2b5f94fa | 2071 | ret = this._framebufferUpdate(); |
6d6f0db0 SR |
2072 | if (ret && !this._enabledContinuousUpdates) { |
2073 | RFB.messages.fbUpdateRequest(this._sock, true, 0, 0, | |
e7dec527 | 2074 | this._fbWidth, this._fbHeight); |
6d6f0db0 SR |
2075 | } |
2076 | return ret; | |
3df13262 | 2077 | |
6d6f0db0 | 2078 | case 1: // SetColorMapEntries |
00674385 | 2079 | return this._handleSetColourMapMsg(); |
6d6f0db0 SR |
2080 | |
2081 | case 2: // Bell | |
2082 | Log.Debug("Bell"); | |
2b5f94fa | 2083 | this.dispatchEvent(new CustomEvent( |
4a16dc51 | 2084 | "bell", |
2b5f94fa | 2085 | { detail: {} })); |
6d6f0db0 SR |
2086 | return true; |
2087 | ||
2088 | case 3: // ServerCutText | |
00674385 | 2089 | return this._handleServerCutText(); |
6d6f0db0 SR |
2090 | |
2091 | case 150: // EndOfContinuousUpdates | |
2b5f94fa | 2092 | first = !this._supportsContinuousUpdates; |
6d6f0db0 SR |
2093 | this._supportsContinuousUpdates = true; |
2094 | this._enabledContinuousUpdates = false; | |
2095 | if (first) { | |
2096 | this._enabledContinuousUpdates = true; | |
2097 | this._updateContinuousUpdates(); | |
2098 | Log.Info("Enabling continuous updates."); | |
2099 | } else { | |
2100 | // FIXME: We need to send a framebufferupdaterequest here | |
2101 | // if we add support for turning off continuous updates | |
2102 | } | |
2103 | return true; | |
3df13262 | 2104 | |
6d6f0db0 | 2105 | case 248: // ServerFence |
00674385 | 2106 | return this._handleServerFenceMsg(); |
3df13262 | 2107 | |
6d6f0db0 | 2108 | case 250: // XVP |
00674385 | 2109 | return this._handleXvpMsg(); |
3df13262 | 2110 | |
6d6f0db0 | 2111 | default: |
e7dec527 | 2112 | this._fail("Unexpected server message (type " + msgType + ")"); |
6d6f0db0 SR |
2113 | Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30)); |
2114 | return true; | |
2115 | } | |
0e4808bf | 2116 | } |
3df13262 | 2117 | |
0e4808bf | 2118 | _onFlush() { |
6d6f0db0 SR |
2119 | this._flushing = false; |
2120 | // Resume processing | |
8a189a62 | 2121 | if (this._sock.rQlen > 0) { |
00674385 | 2122 | this._handleMessage(); |
6d6f0db0 | 2123 | } |
0e4808bf | 2124 | } |
3df13262 | 2125 | |
0e4808bf | 2126 | _framebufferUpdate() { |
6d6f0db0 SR |
2127 | if (this._FBU.rects === 0) { |
2128 | if (this._sock.rQwait("FBU header", 3, 1)) { return false; } | |
8a189a62 | 2129 | this._sock.rQskipBytes(1); // Padding |
6d6f0db0 | 2130 | this._FBU.rects = this._sock.rQshift16(); |
b1dee947 | 2131 | |
6d6f0db0 SR |
2132 | // Make sure the previous frame is fully rendered first |
2133 | // to avoid building up an excessive queue | |
2134 | if (this._display.pending()) { | |
2135 | this._flushing = true; | |
2136 | this._display.flush(); | |
2137 | return false; | |
2138 | } | |
2139 | } | |
b1dee947 | 2140 | |
6d6f0db0 | 2141 | while (this._FBU.rects > 0) { |
923cd220 | 2142 | if (this._FBU.encoding === null) { |
6d6f0db0 SR |
2143 | if (this._sock.rQwait("rect header", 12)) { return false; } |
2144 | /* New FramebufferUpdate */ | |
b1dee947 | 2145 | |
2b5f94fa | 2146 | const hdr = this._sock.rQshiftBytes(12); |
6d6f0db0 SR |
2147 | this._FBU.x = (hdr[0] << 8) + hdr[1]; |
2148 | this._FBU.y = (hdr[2] << 8) + hdr[3]; | |
2149 | this._FBU.width = (hdr[4] << 8) + hdr[5]; | |
2150 | this._FBU.height = (hdr[6] << 8) + hdr[7]; | |
2151 | this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) + | |
2152 | (hdr[10] << 8) + hdr[11], 10); | |
6d6f0db0 | 2153 | } |
b1dee947 | 2154 | |
11309f32 PO |
2155 | if (!this._handleRect()) { |
2156 | return false; | |
6d6f0db0 | 2157 | } |
b1dee947 | 2158 | |
11309f32 | 2159 | this._FBU.rects--; |
923cd220 | 2160 | this._FBU.encoding = null; |
6d6f0db0 | 2161 | } |
76a86ff5 | 2162 | |
6d6f0db0 | 2163 | this._display.flip(); |
3df13262 | 2164 | |
6d6f0db0 | 2165 | return true; // We finished this FBU |
0e4808bf | 2166 | } |
b1dee947 | 2167 | |
11309f32 PO |
2168 | _handleRect() { |
2169 | switch (this._FBU.encoding) { | |
2170 | case encodings.pseudoEncodingLastRect: | |
2171 | this._FBU.rects = 1; // Will be decreased when we return | |
2172 | return true; | |
b1dee947 | 2173 | |
296ba51f NL |
2174 | case encodings.pseudoEncodingVMwareCursor: |
2175 | return this._handleVMwareCursor(); | |
2176 | ||
11309f32 PO |
2177 | case encodings.pseudoEncodingCursor: |
2178 | return this._handleCursor(); | |
d9ca5e5b | 2179 | |
11309f32 | 2180 | case encodings.pseudoEncodingQEMUExtendedKeyEvent: |
5b5b7474 | 2181 | this._qemuExtKeyEventSupported = true; |
11309f32 PO |
2182 | return true; |
2183 | ||
ce66b469 NL |
2184 | case encodings.pseudoEncodingDesktopName: |
2185 | return this._handleDesktopName(); | |
2186 | ||
11309f32 PO |
2187 | case encodings.pseudoEncodingDesktopSize: |
2188 | this._resize(this._FBU.width, this._FBU.height); | |
2189 | return true; | |
2190 | ||
2191 | case encodings.pseudoEncodingExtendedDesktopSize: | |
2192 | return this._handleExtendedDesktopSize(); | |
2193 | ||
2194 | default: | |
2195 | return this._handleDataRect(); | |
2196 | } | |
2197 | } | |
2198 | ||
296ba51f NL |
2199 | _handleVMwareCursor() { |
2200 | const hotx = this._FBU.x; // hotspot-x | |
2201 | const hoty = this._FBU.y; // hotspot-y | |
2202 | const w = this._FBU.width; | |
2203 | const h = this._FBU.height; | |
2204 | if (this._sock.rQwait("VMware cursor encoding", 1)) { | |
2205 | return false; | |
2206 | } | |
2207 | ||
e7dec527 | 2208 | const cursorType = this._sock.rQshift8(); |
296ba51f NL |
2209 | |
2210 | this._sock.rQshift8(); //Padding | |
2211 | ||
2212 | let rgba; | |
2213 | const bytesPerPixel = 4; | |
2214 | ||
2215 | //Classic cursor | |
e7dec527 | 2216 | if (cursorType == 0) { |
296ba51f NL |
2217 | //Used to filter away unimportant bits. |
2218 | //OR is used for correct conversion in js. | |
2219 | const PIXEL_MASK = 0xffffff00 | 0; | |
2220 | rgba = new Array(w * h * bytesPerPixel); | |
2221 | ||
2222 | if (this._sock.rQwait("VMware cursor classic encoding", | |
2223 | (w * h * bytesPerPixel) * 2, 2)) { | |
2224 | return false; | |
2225 | } | |
2226 | ||
e7dec527 | 2227 | let andMask = new Array(w * h); |
296ba51f | 2228 | for (let pixel = 0; pixel < (w * h); pixel++) { |
e7dec527 | 2229 | andMask[pixel] = this._sock.rQshift32(); |
296ba51f NL |
2230 | } |
2231 | ||
e7dec527 | 2232 | let xorMask = new Array(w * h); |
296ba51f | 2233 | for (let pixel = 0; pixel < (w * h); pixel++) { |
e7dec527 | 2234 | xorMask[pixel] = this._sock.rQshift32(); |
296ba51f NL |
2235 | } |
2236 | ||
2237 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
e7dec527 | 2238 | if (andMask[pixel] == 0) { |
296ba51f | 2239 | //Fully opaque pixel |
e7dec527 | 2240 | let bgr = xorMask[pixel]; |
296ba51f NL |
2241 | let r = bgr >> 8 & 0xff; |
2242 | let g = bgr >> 16 & 0xff; | |
2243 | let b = bgr >> 24 & 0xff; | |
2244 | ||
2245 | rgba[(pixel * bytesPerPixel) ] = r; //r | |
2246 | rgba[(pixel * bytesPerPixel) + 1 ] = g; //g | |
2247 | rgba[(pixel * bytesPerPixel) + 2 ] = b; //b | |
2248 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; //a | |
2249 | ||
e7dec527 | 2250 | } else if ((andMask[pixel] & PIXEL_MASK) == |
296ba51f NL |
2251 | PIXEL_MASK) { |
2252 | //Only screen value matters, no mouse colouring | |
e7dec527 | 2253 | if (xorMask[pixel] == 0) { |
296ba51f NL |
2254 | //Transparent pixel |
2255 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
2256 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2257 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2258 | rgba[(pixel * bytesPerPixel) + 3 ] = 0x00; | |
2259 | ||
e7dec527 | 2260 | } else if ((xorMask[pixel] & PIXEL_MASK) == |
296ba51f NL |
2261 | PIXEL_MASK) { |
2262 | //Inverted pixel, not supported in browsers. | |
2263 | //Fully opaque instead. | |
2264 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
2265 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2266 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2267 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2268 | ||
2269 | } else { | |
e7dec527 | 2270 | //Unhandled xorMask |
296ba51f NL |
2271 | rgba[(pixel * bytesPerPixel) ] = 0x00; |
2272 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2273 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2274 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2275 | } | |
2276 | ||
2277 | } else { | |
e7dec527 | 2278 | //Unhandled andMask |
296ba51f NL |
2279 | rgba[(pixel * bytesPerPixel) ] = 0x00; |
2280 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2281 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2282 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | //Alpha cursor. | |
e7dec527 | 2287 | } else if (cursorType == 1) { |
296ba51f NL |
2288 | if (this._sock.rQwait("VMware cursor alpha encoding", |
2289 | (w * h * 4), 2)) { | |
2290 | return false; | |
2291 | } | |
2292 | ||
2293 | rgba = new Array(w * h * bytesPerPixel); | |
2294 | ||
2295 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
2296 | let data = this._sock.rQshift32(); | |
2297 | ||
71bb3fdf | 2298 | rgba[(pixel * 4) ] = data >> 24 & 0xff; //r |
296ba51f | 2299 | rgba[(pixel * 4) + 1 ] = data >> 16 & 0xff; //g |
71bb3fdf | 2300 | rgba[(pixel * 4) + 2 ] = data >> 8 & 0xff; //b |
296ba51f NL |
2301 | rgba[(pixel * 4) + 3 ] = data & 0xff; //a |
2302 | } | |
2303 | ||
2304 | } else { | |
2305 | Log.Warn("The given cursor type is not supported: " | |
e7dec527 | 2306 | + cursorType + " given."); |
296ba51f NL |
2307 | return false; |
2308 | } | |
2309 | ||
2310 | this._updateCursor(rgba, hotx, hoty, w, h); | |
2311 | ||
2312 | return true; | |
2313 | } | |
2314 | ||
11309f32 | 2315 | _handleCursor() { |
679535ec PO |
2316 | const hotx = this._FBU.x; // hotspot-x |
2317 | const hoty = this._FBU.y; // hotspot-y | |
11309f32 PO |
2318 | const w = this._FBU.width; |
2319 | const h = this._FBU.height; | |
2320 | ||
2321 | const pixelslength = w * h * 4; | |
679535ec | 2322 | const masklength = Math.ceil(w / 8) * h; |
11309f32 | 2323 | |
923cd220 PO |
2324 | let bytes = pixelslength + masklength; |
2325 | if (this._sock.rQwait("cursor encoding", bytes)) { | |
11309f32 PO |
2326 | return false; |
2327 | } | |
2328 | ||
679535ec PO |
2329 | // Decode from BGRX pixels + bit mask to RGBA |
2330 | const pixels = this._sock.rQshiftBytes(pixelslength); | |
2331 | const mask = this._sock.rQshiftBytes(masklength); | |
2332 | let rgba = new Uint8Array(w * h * 4); | |
2333 | ||
e7dec527 | 2334 | let pixIdx = 0; |
679535ec PO |
2335 | for (let y = 0; y < h; y++) { |
2336 | for (let x = 0; x < w; x++) { | |
e7dec527 SM |
2337 | let maskIdx = y * Math.ceil(w / 8) + Math.floor(x / 8); |
2338 | let alpha = (mask[maskIdx] << (x % 8)) & 0x80 ? 255 : 0; | |
2339 | rgba[pixIdx ] = pixels[pixIdx + 2]; | |
2340 | rgba[pixIdx + 1] = pixels[pixIdx + 1]; | |
2341 | rgba[pixIdx + 2] = pixels[pixIdx]; | |
2342 | rgba[pixIdx + 3] = alpha; | |
2343 | pixIdx += 4; | |
679535ec PO |
2344 | } |
2345 | } | |
2346 | ||
2347 | this._updateCursor(rgba, hotx, hoty, w, h); | |
11309f32 | 2348 | |
11309f32 PO |
2349 | return true; |
2350 | } | |
2351 | ||
ce66b469 NL |
2352 | _handleDesktopName() { |
2353 | if (this._sock.rQwait("DesktopName", 4)) { | |
2354 | return false; | |
2355 | } | |
2356 | ||
2357 | let length = this._sock.rQshift32(); | |
2358 | ||
2359 | if (this._sock.rQwait("DesktopName", length, 4)) { | |
2360 | return false; | |
2361 | } | |
2362 | ||
2363 | let name = this._sock.rQshiftStr(length); | |
2cf82a5c | 2364 | name = decodeUTF8(name, true); |
ce66b469 NL |
2365 | |
2366 | this._setDesktopName(name); | |
2367 | ||
2368 | return true; | |
2369 | } | |
2370 | ||
11309f32 | 2371 | _handleExtendedDesktopSize() { |
923cd220 | 2372 | if (this._sock.rQwait("ExtendedDesktopSize", 4)) { |
11309f32 PO |
2373 | return false; |
2374 | } | |
2375 | ||
e7dec527 | 2376 | const numberOfScreens = this._sock.rQpeek8(); |
11309f32 | 2377 | |
e7dec527 | 2378 | let bytes = 4 + (numberOfScreens * 16); |
923cd220 | 2379 | if (this._sock.rQwait("ExtendedDesktopSize", bytes)) { |
11309f32 PO |
2380 | return false; |
2381 | } | |
2382 | ||
2383 | const firstUpdate = !this._supportsSetDesktopSize; | |
2384 | this._supportsSetDesktopSize = true; | |
2385 | ||
2386 | // Normally we only apply the current resize mode after a | |
2387 | // window resize event. However there is no such trigger on the | |
2388 | // initial connect. And we don't know if the server supports | |
2389 | // resizing until we've gotten here. | |
2390 | if (firstUpdate) { | |
2391 | this._requestRemoteResize(); | |
2392 | } | |
2393 | ||
2394 | this._sock.rQskipBytes(1); // number-of-screens | |
2395 | this._sock.rQskipBytes(3); // padding | |
2396 | ||
e7dec527 | 2397 | for (let i = 0; i < numberOfScreens; i += 1) { |
11309f32 PO |
2398 | // Save the id and flags of the first screen |
2399 | if (i === 0) { | |
e7dec527 | 2400 | this._screenID = this._sock.rQshiftBytes(4); // id |
11309f32 PO |
2401 | this._sock.rQskipBytes(2); // x-position |
2402 | this._sock.rQskipBytes(2); // y-position | |
2403 | this._sock.rQskipBytes(2); // width | |
2404 | this._sock.rQskipBytes(2); // height | |
e7dec527 | 2405 | this._screenFlags = this._sock.rQshiftBytes(4); // flags |
11309f32 PO |
2406 | } else { |
2407 | this._sock.rQskipBytes(16); | |
b1dee947 | 2408 | } |
11309f32 | 2409 | } |
b1dee947 | 2410 | |
11309f32 PO |
2411 | /* |
2412 | * The x-position indicates the reason for the change: | |
2413 | * | |
2414 | * 0 - server resized on its own | |
2415 | * 1 - this client requested the resize | |
2416 | * 2 - another client requested the resize | |
2417 | */ | |
2418 | ||
2419 | // We need to handle errors when we requested the resize. | |
2420 | if (this._FBU.x === 1 && this._FBU.y !== 0) { | |
2421 | let msg = ""; | |
2422 | // The y-position indicates the status code from the server | |
2423 | switch (this._FBU.y) { | |
9881899e PO |
2424 | case 1: |
2425 | msg = "Resize is administratively prohibited"; | |
2426 | break; | |
2427 | case 2: | |
2428 | msg = "Out of resources"; | |
2429 | break; | |
2430 | case 3: | |
2431 | msg = "Invalid screen layout"; | |
2432 | break; | |
2433 | default: | |
2434 | msg = "Unknown reason"; | |
2435 | break; | |
11309f32 PO |
2436 | } |
2437 | Log.Warn("Server did not accept the resize request: " | |
2438 | + msg); | |
2439 | } else { | |
2440 | this._resize(this._FBU.width, this._FBU.height); | |
6d6f0db0 | 2441 | } |
b1dee947 | 2442 | |
11309f32 PO |
2443 | return true; |
2444 | } | |
b1dee947 | 2445 | |
11309f32 | 2446 | _handleDataRect() { |
923cd220 PO |
2447 | let decoder = this._decoders[this._FBU.encoding]; |
2448 | if (!decoder) { | |
11309f32 PO |
2449 | this._fail("Unsupported encoding (encoding: " + |
2450 | this._FBU.encoding + ")"); | |
2451 | return false; | |
2452 | } | |
2453 | ||
923cd220 PO |
2454 | try { |
2455 | return decoder.decodeRect(this._FBU.x, this._FBU.y, | |
2456 | this._FBU.width, this._FBU.height, | |
2457 | this._sock, this._display, | |
e7dec527 | 2458 | this._fbDepth); |
923cd220 PO |
2459 | } catch (err) { |
2460 | this._fail("Error decoding rect: " + err); | |
2461 | return false; | |
2462 | } | |
0e4808bf | 2463 | } |
b1dee947 | 2464 | |
0e4808bf | 2465 | _updateContinuousUpdates() { |
6d6f0db0 | 2466 | if (!this._enabledContinuousUpdates) { return; } |
b1dee947 | 2467 | |
6d6f0db0 | 2468 | RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0, |
e7dec527 | 2469 | this._fbWidth, this._fbHeight); |
0e4808bf | 2470 | } |
91d5c625 | 2471 | |
0e4808bf | 2472 | _resize(width, height) { |
e7dec527 SM |
2473 | this._fbWidth = width; |
2474 | this._fbHeight = height; | |
91d5c625 | 2475 | |
e7dec527 | 2476 | this._display.resize(this._fbWidth, this._fbHeight); |
e89eef94 | 2477 | |
9b84f516 PO |
2478 | // Adjust the visible viewport based on the new dimensions |
2479 | this._updateClip(); | |
2480 | this._updateScale(); | |
91d5c625 | 2481 | |
91d5c625 | 2482 | this._updateContinuousUpdates(); |
0e4808bf | 2483 | } |
8db09746 | 2484 | |
0e4808bf | 2485 | _xvpOp(ver, op) { |
e7dec527 | 2486 | if (this._rfbXvpVer < ver) { return; } |
cd523e8f PO |
2487 | Log.Info("Sending XVP operation " + op + " (version " + ver + ")"); |
2488 | RFB.messages.xvpOp(this._sock, ver, op); | |
0e4808bf | 2489 | } |
76a86ff5 | 2490 | |
d1314d4b AP |
2491 | _updateCursor(rgba, hotx, hoty, w, h) { |
2492 | this._cursorImage = { | |
2493 | rgbaPixels: rgba, | |
2494 | hotx: hotx, hoty: hoty, w: w, h: h, | |
2495 | }; | |
2496 | this._refreshCursor(); | |
2497 | } | |
2498 | ||
4c38179d AP |
2499 | _shouldShowDotCursor() { |
2500 | // Called when this._cursorImage is updated | |
2501 | if (!this._showDotCursor) { | |
2502 | // User does not want to see the dot, so... | |
2503 | return false; | |
2504 | } | |
2505 | ||
2506 | // The dot should not be shown if the cursor is already visible, | |
2507 | // i.e. contains at least one not-fully-transparent pixel. | |
2508 | // So iterate through all alpha bytes in rgba and stop at the | |
2509 | // first non-zero. | |
2510 | for (let i = 3; i < this._cursorImage.rgbaPixels.length; i += 4) { | |
2511 | if (this._cursorImage.rgbaPixels[i]) { | |
2512 | return false; | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | // At this point, we know that the cursor is fully transparent, and | |
2517 | // the user wants to see the dot instead of this. | |
2518 | return true; | |
2519 | } | |
2520 | ||
d1314d4b | 2521 | _refreshCursor() { |
e7dec527 SM |
2522 | if (this._rfbConnectionState !== "connecting" && |
2523 | this._rfbConnectionState !== "connected") { | |
49db41ea PO |
2524 | return; |
2525 | } | |
4c38179d AP |
2526 | const image = this._shouldShowDotCursor() ? RFB.cursors.dot : this._cursorImage; |
2527 | this._cursor.change(image.rgbaPixels, | |
2528 | image.hotx, image.hoty, | |
2529 | image.w, image.h | |
d1314d4b AP |
2530 | ); |
2531 | } | |
2532 | ||
0e4808bf | 2533 | static genDES(password, challenge) { |
0505214c JD |
2534 | const passwordChars = password.split('').map(c => c.charCodeAt(0)); |
2535 | return (new DES(passwordChars)).encrypt(challenge); | |
0e4808bf JD |
2536 | } |
2537 | } | |
76a86ff5 | 2538 | |
6d6f0db0 SR |
2539 | // Class Methods |
2540 | RFB.messages = { | |
0e4808bf | 2541 | keyEvent(sock, keysym, down) { |
2b5f94fa JD |
2542 | const buff = sock._sQ; |
2543 | const offset = sock._sQlen; | |
8db09746 | 2544 | |
6d6f0db0 SR |
2545 | buff[offset] = 4; // msg-type |
2546 | buff[offset + 1] = down; | |
b1dee947 | 2547 | |
6d6f0db0 SR |
2548 | buff[offset + 2] = 0; |
2549 | buff[offset + 3] = 0; | |
fb49f91b | 2550 | |
6d6f0db0 SR |
2551 | buff[offset + 4] = (keysym >> 24); |
2552 | buff[offset + 5] = (keysym >> 16); | |
2553 | buff[offset + 6] = (keysym >> 8); | |
2554 | buff[offset + 7] = keysym; | |
b1dee947 | 2555 | |
6d6f0db0 SR |
2556 | sock._sQlen += 8; |
2557 | sock.flush(); | |
2558 | }, | |
ef1e8bab | 2559 | |
0e4808bf | 2560 | QEMUExtendedKeyEvent(sock, keysym, down, keycode) { |
e7dec527 | 2561 | function getRFBkeycode(xtScanCode) { |
2b5f94fa JD |
2562 | const upperByte = (keycode >> 8); |
2563 | const lowerByte = (keycode & 0x00ff); | |
6d6f0db0 | 2564 | if (upperByte === 0xe0 && lowerByte < 0x7f) { |
2b5f94fa | 2565 | return lowerByte | 0x80; |
ef1e8bab | 2566 | } |
e7dec527 | 2567 | return xtScanCode; |
ef1e8bab | 2568 | } |
b1dee947 | 2569 | |
2b5f94fa JD |
2570 | const buff = sock._sQ; |
2571 | const offset = sock._sQlen; | |
8f06673a | 2572 | |
6d6f0db0 SR |
2573 | buff[offset] = 255; // msg-type |
2574 | buff[offset + 1] = 0; // sub msg-type | |
8f06673a | 2575 | |
6d6f0db0 SR |
2576 | buff[offset + 2] = (down >> 8); |
2577 | buff[offset + 3] = down; | |
8f06673a | 2578 | |
6d6f0db0 SR |
2579 | buff[offset + 4] = (keysym >> 24); |
2580 | buff[offset + 5] = (keysym >> 16); | |
2581 | buff[offset + 6] = (keysym >> 8); | |
2582 | buff[offset + 7] = keysym; | |
8f06673a | 2583 | |
2b5f94fa | 2584 | const RFBkeycode = getRFBkeycode(keycode); |
8f06673a | 2585 | |
6d6f0db0 SR |
2586 | buff[offset + 8] = (RFBkeycode >> 24); |
2587 | buff[offset + 9] = (RFBkeycode >> 16); | |
2588 | buff[offset + 10] = (RFBkeycode >> 8); | |
2589 | buff[offset + 11] = RFBkeycode; | |
8f06673a | 2590 | |
6d6f0db0 SR |
2591 | sock._sQlen += 12; |
2592 | sock.flush(); | |
2593 | }, | |
8f06673a | 2594 | |
0e4808bf | 2595 | pointerEvent(sock, x, y, mask) { |
2b5f94fa JD |
2596 | const buff = sock._sQ; |
2597 | const offset = sock._sQlen; | |
8f06673a | 2598 | |
6d6f0db0 | 2599 | buff[offset] = 5; // msg-type |
9ff86fb7 | 2600 | |
6d6f0db0 | 2601 | buff[offset + 1] = mask; |
9ff86fb7 | 2602 | |
6d6f0db0 SR |
2603 | buff[offset + 2] = x >> 8; |
2604 | buff[offset + 3] = x; | |
9ff86fb7 | 2605 | |
6d6f0db0 SR |
2606 | buff[offset + 4] = y >> 8; |
2607 | buff[offset + 5] = y; | |
9ff86fb7 | 2608 | |
6d6f0db0 SR |
2609 | sock._sQlen += 6; |
2610 | sock.flush(); | |
2611 | }, | |
9ff86fb7 | 2612 | |
f73fdc3e NL |
2613 | // Used to build Notify and Request data. |
2614 | _buildExtendedClipboardFlags(actions, formats) { | |
2615 | let data = new Uint8Array(4); | |
2616 | let formatFlag = 0x00000000; | |
2617 | let actionFlag = 0x00000000; | |
2618 | ||
2619 | for (let i = 0; i < actions.length; i++) { | |
2620 | actionFlag |= actions[i]; | |
2621 | } | |
2622 | ||
2623 | for (let i = 0; i < formats.length; i++) { | |
2624 | formatFlag |= formats[i]; | |
2625 | } | |
2626 | ||
2627 | data[0] = actionFlag >> 24; // Actions | |
2628 | data[1] = 0x00; // Reserved | |
2629 | data[2] = 0x00; // Reserved | |
2630 | data[3] = formatFlag; // Formats | |
2631 | ||
2632 | return data; | |
2633 | }, | |
2634 | ||
2635 | extendedClipboardProvide(sock, formats, inData) { | |
2636 | // Deflate incomming data and their sizes | |
2637 | let deflator = new Deflator(); | |
2638 | let dataToDeflate = []; | |
2639 | ||
2640 | for (let i = 0; i < formats.length; i++) { | |
2641 | // We only support the format Text at this time | |
2642 | if (formats[i] != extendedClipboardFormatText) { | |
2643 | throw new Error("Unsupported extended clipboard format for Provide message."); | |
2644 | } | |
2645 | ||
2646 | // Change lone \r or \n into \r\n as defined in rfbproto | |
2647 | inData[i] = inData[i].replace(/\r\n|\r|\n/gm, "\r\n"); | |
2648 | ||
2649 | // Check if it already has \0 | |
2650 | let text = encodeUTF8(inData[i] + "\0"); | |
2651 | ||
2652 | dataToDeflate.push( (text.length >> 24) & 0xFF, | |
2653 | (text.length >> 16) & 0xFF, | |
2654 | (text.length >> 8) & 0xFF, | |
2655 | (text.length & 0xFF)); | |
2656 | ||
2657 | for (let j = 0; j < text.length; j++) { | |
2658 | dataToDeflate.push(text.charCodeAt(j)); | |
2659 | } | |
2660 | } | |
2661 | ||
2662 | let deflatedData = deflator.deflate(new Uint8Array(dataToDeflate)); | |
2663 | ||
2664 | // Build data to send | |
2665 | let data = new Uint8Array(4 + deflatedData.length); | |
2666 | data.set(RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionProvide], | |
2667 | formats)); | |
2668 | data.set(deflatedData, 4); | |
2669 | ||
2670 | RFB.messages.clientCutText(sock, data, true); | |
2671 | }, | |
2672 | ||
2673 | extendedClipboardNotify(sock, formats) { | |
2674 | let flags = RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionNotify], | |
2675 | formats); | |
2676 | RFB.messages.clientCutText(sock, flags, true); | |
2677 | }, | |
2678 | ||
2679 | extendedClipboardRequest(sock, formats) { | |
2680 | let flags = RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionRequest], | |
2681 | formats); | |
2682 | RFB.messages.clientCutText(sock, flags, true); | |
2683 | }, | |
2684 | ||
2685 | extendedClipboardCaps(sock, actions, formats) { | |
2686 | let formatKeys = Object.keys(formats); | |
2687 | let data = new Uint8Array(4 + (4 * formatKeys.length)); | |
2688 | ||
2689 | formatKeys.map(x => parseInt(x)); | |
2690 | formatKeys.sort((a, b) => a - b); | |
2691 | ||
2692 | data.set(RFB.messages._buildExtendedClipboardFlags(actions, [])); | |
2693 | ||
2694 | let loopOffset = 4; | |
2695 | for (let i = 0; i < formatKeys.length; i++) { | |
2696 | data[loopOffset] = formats[formatKeys[i]] >> 24; | |
2697 | data[loopOffset + 1] = formats[formatKeys[i]] >> 16; | |
2698 | data[loopOffset + 2] = formats[formatKeys[i]] >> 8; | |
2699 | data[loopOffset + 3] = formats[formatKeys[i]] >> 0; | |
2700 | ||
2701 | loopOffset += 4; | |
2702 | data[3] |= (1 << formatKeys[i]); // Update our format flags | |
2703 | } | |
2704 | ||
2705 | RFB.messages.clientCutText(sock, data, true); | |
2706 | }, | |
2707 | ||
2708 | clientCutText(sock, data, extended = false) { | |
2b5f94fa JD |
2709 | const buff = sock._sQ; |
2710 | const offset = sock._sQlen; | |
b1dee947 | 2711 | |
6d6f0db0 | 2712 | buff[offset] = 6; // msg-type |
9ff86fb7 | 2713 | |
6d6f0db0 SR |
2714 | buff[offset + 1] = 0; // padding |
2715 | buff[offset + 2] = 0; // padding | |
2716 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 2717 | |
f73fdc3e NL |
2718 | let length; |
2719 | if (extended) { | |
2720 | length = toUnsigned32bit(-data.length); | |
2721 | } else { | |
2722 | length = data.length; | |
2723 | } | |
9ff86fb7 | 2724 | |
2bb8b28d SM |
2725 | buff[offset + 4] = length >> 24; |
2726 | buff[offset + 5] = length >> 16; | |
2727 | buff[offset + 6] = length >> 8; | |
2728 | buff[offset + 7] = length; | |
9ff86fb7 | 2729 | |
2bb8b28d | 2730 | sock._sQlen += 8; |
9ff86fb7 | 2731 | |
f73fdc3e | 2732 | // We have to keep track of from where in the data we begin creating the |
2bb8b28d | 2733 | // buffer for the flush in the next iteration. |
f73fdc3e | 2734 | let dataOffset = 0; |
2bb8b28d | 2735 | |
f73fdc3e | 2736 | let remaining = data.length; |
2bb8b28d SM |
2737 | while (remaining > 0) { |
2738 | ||
0e4808bf | 2739 | let flushSize = Math.min(remaining, (sock._sQbufferSize - sock._sQlen)); |
2bb8b28d | 2740 | for (let i = 0; i < flushSize; i++) { |
f73fdc3e | 2741 | buff[sock._sQlen + i] = data[dataOffset + i]; |
2bb8b28d SM |
2742 | } |
2743 | ||
2744 | sock._sQlen += flushSize; | |
2745 | sock.flush(); | |
2746 | ||
2747 | remaining -= flushSize; | |
f73fdc3e | 2748 | dataOffset += flushSize; |
2bb8b28d | 2749 | } |
f73fdc3e | 2750 | |
6d6f0db0 SR |
2751 | }, |
2752 | ||
0e4808bf | 2753 | setDesktopSize(sock, width, height, id, flags) { |
2b5f94fa JD |
2754 | const buff = sock._sQ; |
2755 | const offset = sock._sQlen; | |
6d6f0db0 SR |
2756 | |
2757 | buff[offset] = 251; // msg-type | |
2758 | buff[offset + 1] = 0; // padding | |
2759 | buff[offset + 2] = width >> 8; // width | |
2760 | buff[offset + 3] = width; | |
2761 | buff[offset + 4] = height >> 8; // height | |
2762 | buff[offset + 5] = height; | |
2763 | ||
2764 | buff[offset + 6] = 1; // number-of-screens | |
2765 | buff[offset + 7] = 0; // padding | |
2766 | ||
2767 | // screen array | |
2768 | buff[offset + 8] = id >> 24; // id | |
2769 | buff[offset + 9] = id >> 16; | |
2770 | buff[offset + 10] = id >> 8; | |
2771 | buff[offset + 11] = id; | |
2772 | buff[offset + 12] = 0; // x-position | |
2773 | buff[offset + 13] = 0; | |
2774 | buff[offset + 14] = 0; // y-position | |
2775 | buff[offset + 15] = 0; | |
2776 | buff[offset + 16] = width >> 8; // width | |
2777 | buff[offset + 17] = width; | |
2778 | buff[offset + 18] = height >> 8; // height | |
2779 | buff[offset + 19] = height; | |
2780 | buff[offset + 20] = flags >> 24; // flags | |
2781 | buff[offset + 21] = flags >> 16; | |
2782 | buff[offset + 22] = flags >> 8; | |
2783 | buff[offset + 23] = flags; | |
2784 | ||
2785 | sock._sQlen += 24; | |
2786 | sock.flush(); | |
2787 | }, | |
2788 | ||
0e4808bf | 2789 | clientFence(sock, flags, payload) { |
2b5f94fa JD |
2790 | const buff = sock._sQ; |
2791 | const offset = sock._sQlen; | |
6d6f0db0 SR |
2792 | |
2793 | buff[offset] = 248; // msg-type | |
2794 | ||
2795 | buff[offset + 1] = 0; // padding | |
2796 | buff[offset + 2] = 0; // padding | |
2797 | buff[offset + 3] = 0; // padding | |
2798 | ||
2799 | buff[offset + 4] = flags >> 24; // flags | |
2800 | buff[offset + 5] = flags >> 16; | |
2801 | buff[offset + 6] = flags >> 8; | |
2802 | buff[offset + 7] = flags; | |
2803 | ||
2b5f94fa | 2804 | const n = payload.length; |
6d6f0db0 SR |
2805 | |
2806 | buff[offset + 8] = n; // length | |
2807 | ||
2b5f94fa | 2808 | for (let i = 0; i < n; i++) { |
6d6f0db0 SR |
2809 | buff[offset + 9 + i] = payload.charCodeAt(i); |
2810 | } | |
a7a89626 | 2811 | |
6d6f0db0 SR |
2812 | sock._sQlen += 9 + n; |
2813 | sock.flush(); | |
2814 | }, | |
3df13262 | 2815 | |
0e4808bf | 2816 | enableContinuousUpdates(sock, enable, x, y, width, height) { |
2b5f94fa JD |
2817 | const buff = sock._sQ; |
2818 | const offset = sock._sQlen; | |
3df13262 | 2819 | |
6d6f0db0 SR |
2820 | buff[offset] = 150; // msg-type |
2821 | buff[offset + 1] = enable; // enable-flag | |
76a86ff5 | 2822 | |
6d6f0db0 SR |
2823 | buff[offset + 2] = x >> 8; // x |
2824 | buff[offset + 3] = x; | |
2825 | buff[offset + 4] = y >> 8; // y | |
2826 | buff[offset + 5] = y; | |
2827 | buff[offset + 6] = width >> 8; // width | |
2828 | buff[offset + 7] = width; | |
2829 | buff[offset + 8] = height >> 8; // height | |
2830 | buff[offset + 9] = height; | |
76a86ff5 | 2831 | |
6d6f0db0 SR |
2832 | sock._sQlen += 10; |
2833 | sock.flush(); | |
2834 | }, | |
76a86ff5 | 2835 | |
e7dec527 | 2836 | pixelFormat(sock, depth, trueColor) { |
2b5f94fa JD |
2837 | const buff = sock._sQ; |
2838 | const offset = sock._sQlen; | |
ae116051 | 2839 | |
2b5f94fa | 2840 | let bpp; |
5a5f5ada PO |
2841 | |
2842 | if (depth > 16) { | |
2843 | bpp = 32; | |
2844 | } else if (depth > 8) { | |
2845 | bpp = 16; | |
2846 | } else { | |
2847 | bpp = 8; | |
2848 | } | |
2849 | ||
2b5f94fa | 2850 | const bits = Math.floor(depth/3); |
5a5f5ada | 2851 | |
6d6f0db0 | 2852 | buff[offset] = 0; // msg-type |
9ff86fb7 | 2853 | |
6d6f0db0 SR |
2854 | buff[offset + 1] = 0; // padding |
2855 | buff[offset + 2] = 0; // padding | |
2856 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 2857 | |
5a5f5ada PO |
2858 | buff[offset + 4] = bpp; // bits-per-pixel |
2859 | buff[offset + 5] = depth; // depth | |
6d6f0db0 | 2860 | buff[offset + 6] = 0; // little-endian |
e7dec527 | 2861 | buff[offset + 7] = trueColor ? 1 : 0; // true-color |
9ff86fb7 | 2862 | |
6d6f0db0 | 2863 | buff[offset + 8] = 0; // red-max |
5a5f5ada | 2864 | buff[offset + 9] = (1 << bits) - 1; // red-max |
9ff86fb7 | 2865 | |
6d6f0db0 | 2866 | buff[offset + 10] = 0; // green-max |
5a5f5ada | 2867 | buff[offset + 11] = (1 << bits) - 1; // green-max |
9ff86fb7 | 2868 | |
6d6f0db0 | 2869 | buff[offset + 12] = 0; // blue-max |
5a5f5ada | 2870 | buff[offset + 13] = (1 << bits) - 1; // blue-max |
9ff86fb7 | 2871 | |
6a19390b | 2872 | buff[offset + 14] = bits * 0; // red-shift |
5a5f5ada | 2873 | buff[offset + 15] = bits * 1; // green-shift |
6a19390b | 2874 | buff[offset + 16] = bits * 2; // blue-shift |
9ff86fb7 | 2875 | |
6d6f0db0 SR |
2876 | buff[offset + 17] = 0; // padding |
2877 | buff[offset + 18] = 0; // padding | |
2878 | buff[offset + 19] = 0; // padding | |
9ff86fb7 | 2879 | |
6d6f0db0 SR |
2880 | sock._sQlen += 20; |
2881 | sock.flush(); | |
2882 | }, | |
9ff86fb7 | 2883 | |
0e4808bf | 2884 | clientEncodings(sock, encodings) { |
2b5f94fa JD |
2885 | const buff = sock._sQ; |
2886 | const offset = sock._sQlen; | |
b1dee947 | 2887 | |
6d6f0db0 SR |
2888 | buff[offset] = 2; // msg-type |
2889 | buff[offset + 1] = 0; // padding | |
b1dee947 | 2890 | |
49a81837 PO |
2891 | buff[offset + 2] = encodings.length >> 8; |
2892 | buff[offset + 3] = encodings.length; | |
9ff86fb7 | 2893 | |
2b5f94fa JD |
2894 | let j = offset + 4; |
2895 | for (let i = 0; i < encodings.length; i++) { | |
2896 | const enc = encodings[i]; | |
49a81837 PO |
2897 | buff[j] = enc >> 24; |
2898 | buff[j + 1] = enc >> 16; | |
2899 | buff[j + 2] = enc >> 8; | |
2900 | buff[j + 3] = enc; | |
a7a89626 | 2901 | |
49a81837 PO |
2902 | j += 4; |
2903 | } | |
a7a89626 | 2904 | |
6d6f0db0 SR |
2905 | sock._sQlen += j - offset; |
2906 | sock.flush(); | |
2907 | }, | |
a679a97d | 2908 | |
0e4808bf | 2909 | fbUpdateRequest(sock, incremental, x, y, w, h) { |
2b5f94fa JD |
2910 | const buff = sock._sQ; |
2911 | const offset = sock._sQlen; | |
9ff86fb7 | 2912 | |
6d6f0db0 SR |
2913 | if (typeof(x) === "undefined") { x = 0; } |
2914 | if (typeof(y) === "undefined") { y = 0; } | |
b1dee947 | 2915 | |
6d6f0db0 SR |
2916 | buff[offset] = 3; // msg-type |
2917 | buff[offset + 1] = incremental ? 1 : 0; | |
9ff86fb7 | 2918 | |
6d6f0db0 SR |
2919 | buff[offset + 2] = (x >> 8) & 0xFF; |
2920 | buff[offset + 3] = x & 0xFF; | |
9ff86fb7 | 2921 | |
6d6f0db0 SR |
2922 | buff[offset + 4] = (y >> 8) & 0xFF; |
2923 | buff[offset + 5] = y & 0xFF; | |
9ff86fb7 | 2924 | |
6d6f0db0 SR |
2925 | buff[offset + 6] = (w >> 8) & 0xFF; |
2926 | buff[offset + 7] = w & 0xFF; | |
9ff86fb7 | 2927 | |
6d6f0db0 SR |
2928 | buff[offset + 8] = (h >> 8) & 0xFF; |
2929 | buff[offset + 9] = h & 0xFF; | |
b1dee947 | 2930 | |
6d6f0db0 SR |
2931 | sock._sQlen += 10; |
2932 | sock.flush(); | |
85b35fc0 PO |
2933 | }, |
2934 | ||
0e4808bf | 2935 | xvpOp(sock, ver, op) { |
2b5f94fa JD |
2936 | const buff = sock._sQ; |
2937 | const offset = sock._sQlen; | |
85b35fc0 PO |
2938 | |
2939 | buff[offset] = 250; // msg-type | |
2940 | buff[offset + 1] = 0; // padding | |
2941 | ||
2942 | buff[offset + 2] = ver; | |
2943 | buff[offset + 3] = op; | |
2944 | ||
2945 | sock._sQlen += 4; | |
2946 | sock.flush(); | |
6d6f0db0 | 2947 | } |
6d6f0db0 | 2948 | }; |
b1dee947 | 2949 | |
4c38179d AP |
2950 | RFB.cursors = { |
2951 | none: { | |
2952 | rgbaPixels: new Uint8Array(), | |
2953 | w: 0, h: 0, | |
2954 | hotx: 0, hoty: 0, | |
2955 | }, | |
2956 | ||
2957 | dot: { | |
9881899e | 2958 | /* eslint-disable indent */ |
4c38179d AP |
2959 | rgbaPixels: new Uint8Array([ |
2960 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2961 | 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 255, | |
2962 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2963 | ]), | |
9881899e | 2964 | /* eslint-enable indent */ |
4c38179d AP |
2965 | w: 3, h: 3, |
2966 | hotx: 1, hoty: 1, | |
2967 | } | |
2968 | }; |