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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 | ||
0e4808bf | 69 | export default class RFB extends EventTargetMixin { |
44d384b9 | 70 | constructor(target, urlOrChannel, options) { |
0e4808bf | 71 | if (!target) { |
d3ed883a | 72 | throw new Error("Must specify target"); |
0e4808bf | 73 | } |
44d384b9 TS |
74 | if (!urlOrChannel) { |
75 | throw new Error("Must specify URL, WebSocket or RTCDataChannel"); | |
0e4808bf JD |
76 | } |
77 | ||
78 | super(); | |
79 | ||
80 | this._target = target; | |
44d384b9 TS |
81 | |
82 | if (typeof urlOrChannel === "string") { | |
83 | this._url = urlOrChannel; | |
84 | } else { | |
85 | this._url = null; | |
86 | this._rawChannel = urlOrChannel; | |
87 | } | |
0e4808bf JD |
88 | |
89 | // Connection details | |
90 | options = options || {}; | |
e7dec527 | 91 | this._rfbCredentials = options.credentials || {}; |
0e4808bf JD |
92 | this._shared = 'shared' in options ? !!options.shared : true; |
93 | this._repeaterID = options.repeaterID || ''; | |
c9122303 | 94 | this._wsProtocols = options.wsProtocols || []; |
0e4808bf JD |
95 | |
96 | // Internal state | |
e7dec527 SM |
97 | this._rfbConnectionState = ''; |
98 | this._rfbInitState = ''; | |
99 | this._rfbAuthScheme = -1; | |
100 | this._rfbCleanDisconnect = true; | |
0e4808bf JD |
101 | |
102 | // Server capabilities | |
e7dec527 SM |
103 | this._rfbVersion = 0; |
104 | this._rfbMaxVersion = 3.8; | |
105 | this._rfbTightVNC = false; | |
106 | this._rfbVeNCryptState = 0; | |
107 | this._rfbXvpVer = 0; | |
0e4808bf | 108 | |
e7dec527 SM |
109 | this._fbWidth = 0; |
110 | this._fbHeight = 0; | |
0e4808bf | 111 | |
e7dec527 | 112 | this._fbName = ""; |
0e4808bf JD |
113 | |
114 | this._capabilities = { power: false }; | |
115 | ||
116 | this._supportsFence = false; | |
117 | ||
118 | this._supportsContinuousUpdates = false; | |
119 | this._enabledContinuousUpdates = false; | |
120 | ||
121 | this._supportsSetDesktopSize = false; | |
e7dec527 SM |
122 | this._screenID = 0; |
123 | this._screenFlags = 0; | |
0e4808bf JD |
124 | |
125 | this._qemuExtKeyEventSupported = false; | |
126 | ||
f73fdc3e NL |
127 | this._clipboardText = null; |
128 | this._clipboardServerCapabilitiesActions = {}; | |
129 | this._clipboardServerCapabilitiesFormats = {}; | |
130 | ||
0e4808bf JD |
131 | // Internal objects |
132 | this._sock = null; // Websock object | |
133 | this._display = null; // Display object | |
134 | this._flushing = false; // Display flushing state | |
135 | this._keyboard = null; // Keyboard input handler object | |
8be924c9 | 136 | this._gestures = null; // Gesture input handler object |
0e4808bf JD |
137 | |
138 | // Timers | |
139 | this._disconnTimer = null; // disconnection timer | |
140 | this._resizeTimeout = null; // resize rate limiting | |
150596be | 141 | this._mouseMoveTimer = null; |
0e4808bf | 142 | |
e17cae8f | 143 | // Decoder states |
923cd220 | 144 | this._decoders = {}; |
0e4808bf JD |
145 | |
146 | this._FBU = { | |
147 | rects: 0, | |
0e4808bf JD |
148 | x: 0, |
149 | y: 0, | |
150 | width: 0, | |
151 | height: 0, | |
923cd220 | 152 | encoding: null, |
0e4808bf JD |
153 | }; |
154 | ||
155 | // Mouse state | |
150596be | 156 | this._mousePos = {}; |
e7dec527 | 157 | this._mouseButtonMask = 0; |
150596be | 158 | this._mouseLastMoveTime = 0; |
0e4808bf JD |
159 | this._viewportDragging = false; |
160 | this._viewportDragPos = {}; | |
161 | this._viewportHasMoved = false; | |
f84bc57b PO |
162 | this._accumulatedWheelDeltaX = 0; |
163 | this._accumulatedWheelDeltaY = 0; | |
0e4808bf | 164 | |
8be924c9 PO |
165 | // Gesture state |
166 | this._gestureLastTapTime = null; | |
167 | this._gestureFirstDoubleTapEv = null; | |
168 | this._gestureLastMagnitudeX = 0; | |
169 | this._gestureLastMagnitudeY = 0; | |
170 | ||
0e4808bf JD |
171 | // Bound event handlers |
172 | this._eventHandlers = { | |
173 | focusCanvas: this._focusCanvas.bind(this), | |
174 | windowResize: this._windowResize.bind(this), | |
50cde2fa | 175 | handleMouse: this._handleMouse.bind(this), |
f84bc57b | 176 | handleWheel: this._handleWheel.bind(this), |
8be924c9 | 177 | handleGesture: this._handleGesture.bind(this), |
0e4808bf JD |
178 | }; |
179 | ||
180 | // main setup | |
181 | Log.Debug(">> RFB.constructor"); | |
182 | ||
183 | // Create DOM elements | |
184 | this._screen = document.createElement('div'); | |
185 | this._screen.style.display = 'flex'; | |
186 | this._screen.style.width = '100%'; | |
187 | this._screen.style.height = '100%'; | |
188 | this._screen.style.overflow = 'auto'; | |
d7791ebb | 189 | this._screen.style.background = DEFAULT_BACKGROUND; |
0e4808bf JD |
190 | this._canvas = document.createElement('canvas'); |
191 | this._canvas.style.margin = 'auto'; | |
192 | // Some browsers add an outline on focus | |
193 | this._canvas.style.outline = 'none'; | |
0e4808bf JD |
194 | this._canvas.width = 0; |
195 | this._canvas.height = 0; | |
196 | this._canvas.tabIndex = -1; | |
197 | this._screen.appendChild(this._canvas); | |
45808617 | 198 | |
d1314d4b AP |
199 | // Cursor |
200 | this._cursor = new Cursor(); | |
4c38179d AP |
201 | |
202 | // XXX: TightVNC 2.8.11 sends no cursor at all until Windows changes | |
203 | // it. Result: no cursor at all until a window border or an edit field | |
204 | // is hit blindly. But there are also VNC servers that draw the cursor | |
205 | // in the framebuffer and don't send the empty local cursor. There is | |
206 | // no way to satisfy both sides. | |
207 | // | |
208 | // The spec is unclear on this "initial cursor" issue. Many other | |
209 | // viewers (TigerVNC, RealVNC, Remmina) display an arrow as the | |
210 | // initial cursor instead. | |
211 | this._cursorImage = RFB.cursors.none; | |
b475eed5 | 212 | |
923cd220 PO |
213 | // populate decoder array with objects |
214 | this._decoders[encodings.encodingRaw] = new RawDecoder(); | |
215 | this._decoders[encodings.encodingCopyRect] = new CopyRectDecoder(); | |
216 | this._decoders[encodings.encodingRRE] = new RREDecoder(); | |
217 | this._decoders[encodings.encodingHextile] = new HextileDecoder(); | |
218 | this._decoders[encodings.encodingTight] = new TightDecoder(); | |
219 | this._decoders[encodings.encodingTightPNG] = new TightPNGDecoder(); | |
0e4808bf JD |
220 | |
221 | // NB: nothing that needs explicit teardown should be done | |
222 | // before this point, since this can throw an exception | |
223 | try { | |
224 | this._display = new Display(this._canvas); | |
225 | } catch (exc) { | |
226 | Log.Error("Display exception: " + exc); | |
227 | throw exc; | |
228 | } | |
229 | this._display.onflush = this._onFlush.bind(this); | |
0e4808bf JD |
230 | |
231 | this._keyboard = new Keyboard(this._canvas); | |
232 | this._keyboard.onkeyevent = this._handleKeyEvent.bind(this); | |
233 | ||
8be924c9 PO |
234 | this._gestures = new GestureHandler(); |
235 | ||
0e4808bf | 236 | this._sock = new Websock(); |
b8ff5d1b | 237 | this._sock.on('message', () => { |
00674385 | 238 | this._handleMessage(); |
b8ff5d1b | 239 | }); |
651c23ec | 240 | this._sock.on('open', () => { |
e7dec527 SM |
241 | if ((this._rfbConnectionState === 'connecting') && |
242 | (this._rfbInitState === '')) { | |
243 | this._rfbInitState = 'ProtocolVersion'; | |
0e4808bf JD |
244 | Log.Debug("Starting VNC handshake"); |
245 | } else { | |
246 | this._fail("Unexpected server connection while " + | |
e7dec527 | 247 | this._rfbConnectionState); |
b1dee947 | 248 | } |
651c23ec JD |
249 | }); |
250 | this._sock.on('close', (e) => { | |
0e4808bf JD |
251 | Log.Debug("WebSocket on-close event"); |
252 | let msg = ""; | |
253 | if (e.code) { | |
254 | msg = "(code: " + e.code; | |
255 | if (e.reason) { | |
256 | msg += ", reason: " + e.reason; | |
257 | } | |
258 | msg += ")"; | |
259 | } | |
e7dec527 | 260 | switch (this._rfbConnectionState) { |
0e4808bf JD |
261 | case 'connecting': |
262 | this._fail("Connection closed " + msg); | |
263 | break; | |
264 | case 'connected': | |
265 | // Handle disconnects that were initiated server-side | |
266 | this._updateConnectionState('disconnecting'); | |
267 | this._updateConnectionState('disconnected'); | |
268 | break; | |
269 | case 'disconnecting': | |
270 | // Normal disconnection path | |
271 | this._updateConnectionState('disconnected'); | |
272 | break; | |
273 | case 'disconnected': | |
274 | this._fail("Unexpected server disconnect " + | |
651c23ec | 275 | "when already disconnected " + msg); |
0e4808bf JD |
276 | break; |
277 | default: | |
278 | this._fail("Unexpected server disconnect before connecting " + | |
651c23ec | 279 | msg); |
0e4808bf JD |
280 | break; |
281 | } | |
282 | this._sock.off('close'); | |
44d384b9 TS |
283 | // Delete reference to raw channel to allow cleanup. |
284 | this._rawChannel = null; | |
0e4808bf | 285 | }); |
651c23ec | 286 | this._sock.on('error', e => Log.Warn("WebSocket on-error event")); |
8db09746 | 287 | |
0e4808bf JD |
288 | // Slight delay of the actual connection so that the caller has |
289 | // time to set up callbacks | |
290 | setTimeout(this._updateConnectionState.bind(this, 'connecting')); | |
ae510306 | 291 | |
0e4808bf | 292 | Log.Debug("<< RFB.constructor"); |
a7a89626 | 293 | |
0e4808bf | 294 | // ===== PROPERTIES ===== |
6d6f0db0 | 295 | |
0e4808bf JD |
296 | this.dragViewport = false; |
297 | this.focusOnClick = true; | |
a7a89626 | 298 | |
0e4808bf JD |
299 | this._viewOnly = false; |
300 | this._clipViewport = false; | |
301 | this._scaleViewport = false; | |
302 | this._resizeSession = false; | |
6aed0b4d PO |
303 | |
304 | this._showDotCursor = false; | |
305 | if (options.showDotCursor !== undefined) { | |
306 | Log.Warn("Specifying showDotCursor as a RFB constructor argument is deprecated"); | |
307 | this._showDotCursor = options.showDotCursor; | |
308 | } | |
efd1f8a4 AT |
309 | |
310 | this._qualityLevel = 6; | |
479d8cef | 311 | this._compressionLevel = 2; |
0e4808bf JD |
312 | } |
313 | ||
314 | // ===== PROPERTIES ===== | |
315 | ||
316 | get viewOnly() { return this._viewOnly; } | |
747b4623 PO |
317 | set viewOnly(viewOnly) { |
318 | this._viewOnly = viewOnly; | |
319 | ||
e7dec527 SM |
320 | if (this._rfbConnectionState === "connecting" || |
321 | this._rfbConnectionState === "connected") { | |
747b4623 PO |
322 | if (viewOnly) { |
323 | this._keyboard.ungrab(); | |
747b4623 PO |
324 | } else { |
325 | this._keyboard.grab(); | |
747b4623 PO |
326 | } |
327 | } | |
0e4808bf | 328 | } |
6d6f0db0 | 329 | |
0e4808bf | 330 | get capabilities() { return this._capabilities; } |
747b4623 | 331 | |
8be924c9 PO |
332 | get touchButton() { return 0; } |
333 | set touchButton(button) { Log.Warn("Using old API!"); } | |
747b4623 | 334 | |
0e4808bf | 335 | get clipViewport() { return this._clipViewport; } |
9b84f516 PO |
336 | set clipViewport(viewport) { |
337 | this._clipViewport = viewport; | |
338 | this._updateClip(); | |
0e4808bf | 339 | } |
747b4623 | 340 | |
0e4808bf | 341 | get scaleViewport() { return this._scaleViewport; } |
9b84f516 PO |
342 | set scaleViewport(scale) { |
343 | this._scaleViewport = scale; | |
344 | // Scaling trumps clipping, so we may need to adjust | |
345 | // clipping when enabling or disabling scaling | |
346 | if (scale && this._clipViewport) { | |
347 | this._updateClip(); | |
348 | } | |
349 | this._updateScale(); | |
350 | if (!scale && this._clipViewport) { | |
351 | this._updateClip(); | |
352 | } | |
0e4808bf | 353 | } |
747b4623 | 354 | |
0e4808bf | 355 | get resizeSession() { return this._resizeSession; } |
9b84f516 PO |
356 | set resizeSession(resize) { |
357 | this._resizeSession = resize; | |
358 | if (resize) { | |
359 | this._requestRemoteResize(); | |
360 | } | |
0e4808bf | 361 | } |
a80aa416 | 362 | |
4c38179d AP |
363 | get showDotCursor() { return this._showDotCursor; } |
364 | set showDotCursor(show) { | |
365 | this._showDotCursor = show; | |
366 | this._refreshCursor(); | |
367 | } | |
368 | ||
d7791ebb MM |
369 | get background() { return this._screen.style.background; } |
370 | set background(cssValue) { this._screen.style.background = cssValue; } | |
371 | ||
efd1f8a4 AT |
372 | get qualityLevel() { |
373 | return this._qualityLevel; | |
374 | } | |
375 | set qualityLevel(qualityLevel) { | |
376 | if (!Number.isInteger(qualityLevel) || qualityLevel < 0 || qualityLevel > 9) { | |
377 | Log.Error("qualityLevel must be an integer between 0 and 9"); | |
378 | return; | |
379 | } | |
380 | ||
381 | if (this._qualityLevel === qualityLevel) { | |
382 | return; | |
383 | } | |
384 | ||
385 | this._qualityLevel = qualityLevel; | |
386 | ||
e7dec527 | 387 | if (this._rfbConnectionState === 'connected') { |
efd1f8a4 AT |
388 | this._sendEncodings(); |
389 | } | |
390 | } | |
391 | ||
479d8cef SM |
392 | get compressionLevel() { |
393 | return this._compressionLevel; | |
394 | } | |
395 | set compressionLevel(compressionLevel) { | |
396 | if (!Number.isInteger(compressionLevel) || compressionLevel < 0 || compressionLevel > 9) { | |
397 | Log.Error("compressionLevel must be an integer between 0 and 9"); | |
398 | return; | |
399 | } | |
400 | ||
401 | if (this._compressionLevel === compressionLevel) { | |
402 | return; | |
403 | } | |
404 | ||
405 | this._compressionLevel = compressionLevel; | |
406 | ||
e7dec527 | 407 | if (this._rfbConnectionState === 'connected') { |
479d8cef SM |
408 | this._sendEncodings(); |
409 | } | |
410 | } | |
411 | ||
747b4623 PO |
412 | // ===== PUBLIC METHODS ===== |
413 | ||
0e4808bf | 414 | disconnect() { |
6d6f0db0 SR |
415 | this._updateConnectionState('disconnecting'); |
416 | this._sock.off('error'); | |
417 | this._sock.off('message'); | |
418 | this._sock.off('open'); | |
0e4808bf | 419 | } |
6d6f0db0 | 420 | |
0e4808bf | 421 | sendCredentials(creds) { |
e7dec527 | 422 | this._rfbCredentials = creds; |
00674385 | 423 | setTimeout(this._initMsg.bind(this), 0); |
0e4808bf | 424 | } |
6d6f0db0 | 425 | |
0e4808bf | 426 | sendCtrlAltDel() { |
e7dec527 | 427 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
6d6f0db0 SR |
428 | Log.Info("Sending Ctrl-Alt-Del"); |
429 | ||
94f5cf05 PO |
430 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true); |
431 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true); | |
432 | this.sendKey(KeyTable.XK_Delete, "Delete", true); | |
433 | this.sendKey(KeyTable.XK_Delete, "Delete", false); | |
434 | this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false); | |
435 | this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false); | |
0e4808bf | 436 | } |
6d6f0db0 | 437 | |
0e4808bf | 438 | machineShutdown() { |
cd523e8f | 439 | this._xvpOp(1, 2); |
0e4808bf | 440 | } |
6d6f0db0 | 441 | |
0e4808bf | 442 | machineReboot() { |
cd523e8f | 443 | this._xvpOp(1, 3); |
0e4808bf | 444 | } |
6d6f0db0 | 445 | |
0e4808bf | 446 | machineReset() { |
cd523e8f | 447 | this._xvpOp(1, 4); |
0e4808bf | 448 | } |
6d6f0db0 SR |
449 | |
450 | // Send a key press. If 'down' is not specified then send a down key | |
451 | // followed by an up key. | |
0e4808bf | 452 | sendKey(keysym, code, down) { |
e7dec527 | 453 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
94f5cf05 PO |
454 | |
455 | if (down === undefined) { | |
456 | this.sendKey(keysym, code, true); | |
457 | this.sendKey(keysym, code, false); | |
15a62695 | 458 | return; |
94f5cf05 PO |
459 | } |
460 | ||
2b5f94fa | 461 | const scancode = XtScancode[code]; |
94f5cf05 | 462 | |
be70fe0a | 463 | if (this._qemuExtKeyEventSupported && scancode) { |
459ed008 PO |
464 | // 0 is NoSymbol |
465 | keysym = keysym || 0; | |
466 | ||
94f5cf05 PO |
467 | Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode); |
468 | ||
469 | RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode); | |
470 | } else { | |
459ed008 | 471 | if (!keysym) { |
15a62695 | 472 | return; |
459ed008 | 473 | } |
6d6f0db0 SR |
474 | Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym); |
475 | RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0); | |
6d6f0db0 | 476 | } |
0e4808bf | 477 | } |
6d6f0db0 | 478 | |
0e4808bf | 479 | focus() { |
9b84f516 | 480 | this._canvas.focus(); |
0e4808bf | 481 | } |
b9854a5c | 482 | |
0e4808bf | 483 | blur() { |
9b84f516 | 484 | this._canvas.blur(); |
0e4808bf | 485 | } |
b9854a5c | 486 | |
0e4808bf | 487 | clipboardPasteFrom(text) { |
e7dec527 | 488 | if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; } |
f73fdc3e NL |
489 | |
490 | if (this._clipboardServerCapabilitiesFormats[extendedClipboardFormatText] && | |
491 | this._clipboardServerCapabilitiesActions[extendedClipboardActionNotify]) { | |
492 | ||
493 | this._clipboardText = text; | |
494 | RFB.messages.extendedClipboardNotify(this._sock, [extendedClipboardFormatText]); | |
495 | } else { | |
496 | let data = new Uint8Array(text.length); | |
497 | for (let i = 0; i < text.length; i++) { | |
498 | // FIXME: text can have values outside of Latin1/Uint8 | |
499 | data[i] = text.charCodeAt(i); | |
500 | } | |
501 | ||
502 | RFB.messages.clientCutText(this._sock, data); | |
503 | } | |
0e4808bf | 504 | } |
b1dee947 | 505 | |
747b4623 | 506 | // ===== PRIVATE METHODS ===== |
b0ec6509 | 507 | |
0e4808bf | 508 | _connect() { |
6d6f0db0 | 509 | Log.Debug(">> RFB.connect"); |
b0ec6509 | 510 | |
44d384b9 TS |
511 | if (this._url) { |
512 | try { | |
513 | Log.Info(`connecting to ${this._url}`); | |
514 | this._sock.open(this._url, this._wsProtocols); | |
515 | } catch (e) { | |
516 | if (e.name === 'SyntaxError') { | |
517 | this._fail("Invalid host or port (" + e + ")"); | |
518 | } else { | |
519 | this._fail("Error when opening socket (" + e + ")"); | |
520 | } | |
521 | } | |
522 | } else { | |
523 | try { | |
524 | Log.Info(`attaching ${this._rawChannel} to Websock`); | |
525 | this._sock.attach(this._rawChannel); | |
526 | } catch (e) { | |
527 | this._fail("Error attaching channel (" + e + ")"); | |
159ad55d | 528 | } |
6d6f0db0 | 529 | } |
e3efeb32 | 530 | |
9b84f516 PO |
531 | // Make our elements part of the page |
532 | this._target.appendChild(this._screen); | |
533 | ||
8be924c9 PO |
534 | this._gestures.attach(this._canvas); |
535 | ||
b475eed5 | 536 | this._cursor.attach(this._canvas); |
4c38179d | 537 | this._refreshCursor(); |
b475eed5 | 538 | |
9b84f516 PO |
539 | // Monitor size changes of the screen |
540 | // FIXME: Use ResizeObserver, or hidden overflow | |
541 | window.addEventListener('resize', this._eventHandlers.windowResize); | |
542 | ||
2afda544 | 543 | // Always grab focus on some kind of click event |
9b84f516 PO |
544 | this._canvas.addEventListener("mousedown", this._eventHandlers.focusCanvas); |
545 | this._canvas.addEventListener("touchstart", this._eventHandlers.focusCanvas); | |
2afda544 | 546 | |
50cde2fa PO |
547 | // Mouse events |
548 | this._canvas.addEventListener('mousedown', this._eventHandlers.handleMouse); | |
549 | this._canvas.addEventListener('mouseup', this._eventHandlers.handleMouse); | |
550 | this._canvas.addEventListener('mousemove', this._eventHandlers.handleMouse); | |
551 | // Prevent middle-click pasting (see handler for why we bind to document) | |
552 | this._canvas.addEventListener('click', this._eventHandlers.handleMouse); | |
553 | // preventDefault() on mousedown doesn't stop this event for some | |
554 | // reason so we have to explicitly block it | |
555 | this._canvas.addEventListener('contextmenu', this._eventHandlers.handleMouse); | |
556 | ||
f84bc57b PO |
557 | // Wheel events |
558 | this._canvas.addEventListener("wheel", this._eventHandlers.handleWheel); | |
559 | ||
8be924c9 PO |
560 | // Gesture events |
561 | this._canvas.addEventListener("gesturestart", this._eventHandlers.handleGesture); | |
562 | this._canvas.addEventListener("gesturemove", this._eventHandlers.handleGesture); | |
563 | this._canvas.addEventListener("gestureend", this._eventHandlers.handleGesture); | |
564 | ||
6d6f0db0 | 565 | Log.Debug("<< RFB.connect"); |
0e4808bf | 566 | } |
6d6f0db0 | 567 | |
0e4808bf | 568 | _disconnect() { |
6d6f0db0 | 569 | Log.Debug(">> RFB.disconnect"); |
b475eed5 | 570 | this._cursor.detach(); |
8be924c9 PO |
571 | this._canvas.removeEventListener("gesturestart", this._eventHandlers.handleGesture); |
572 | this._canvas.removeEventListener("gesturemove", this._eventHandlers.handleGesture); | |
573 | this._canvas.removeEventListener("gestureend", this._eventHandlers.handleGesture); | |
f84bc57b | 574 | this._canvas.removeEventListener("wheel", this._eventHandlers.handleWheel); |
50cde2fa PO |
575 | this._canvas.removeEventListener('mousedown', this._eventHandlers.handleMouse); |
576 | this._canvas.removeEventListener('mouseup', this._eventHandlers.handleMouse); | |
577 | this._canvas.removeEventListener('mousemove', this._eventHandlers.handleMouse); | |
578 | this._canvas.removeEventListener('click', this._eventHandlers.handleMouse); | |
579 | this._canvas.removeEventListener('contextmenu', this._eventHandlers.handleMouse); | |
9b84f516 PO |
580 | this._canvas.removeEventListener("mousedown", this._eventHandlers.focusCanvas); |
581 | this._canvas.removeEventListener("touchstart", this._eventHandlers.focusCanvas); | |
582 | window.removeEventListener('resize', this._eventHandlers.windowResize); | |
583 | this._keyboard.ungrab(); | |
8be924c9 | 584 | this._gestures.detach(); |
6d6f0db0 | 585 | this._sock.close(); |
b245ec70 SM |
586 | try { |
587 | this._target.removeChild(this._screen); | |
588 | } catch (e) { | |
589 | if (e.name === 'NotFoundError') { | |
590 | // Some cases where the initial connection fails | |
591 | // can disconnect before the _screen is created | |
592 | } else { | |
593 | throw e; | |
594 | } | |
595 | } | |
9b84f516 | 596 | clearTimeout(this._resizeTimeout); |
150596be | 597 | clearTimeout(this._mouseMoveTimer); |
6d6f0db0 | 598 | Log.Debug("<< RFB.disconnect"); |
0e4808bf | 599 | } |
6d6f0db0 | 600 | |
0e4808bf | 601 | _focusCanvas(event) { |
b8dfb983 | 602 | if (!this.focusOnClick) { |
1d6ff4a3 PO |
603 | return; |
604 | } | |
605 | ||
9b84f516 | 606 | this.focus(); |
0e4808bf | 607 | } |
9b84f516 | 608 | |
ce66b469 | 609 | _setDesktopName(name) { |
e7dec527 | 610 | this._fbName = name; |
ce66b469 NL |
611 | this.dispatchEvent(new CustomEvent( |
612 | "desktopname", | |
e7dec527 | 613 | { detail: { name: this._fbName } })); |
ce66b469 NL |
614 | } |
615 | ||
0e4808bf | 616 | _windowResize(event) { |
9b84f516 PO |
617 | // If the window resized then our screen element might have |
618 | // as well. Update the viewport dimensions. | |
651c23ec | 619 | window.requestAnimationFrame(() => { |
9b84f516 PO |
620 | this._updateClip(); |
621 | this._updateScale(); | |
651c23ec | 622 | }); |
9b84f516 PO |
623 | |
624 | if (this._resizeSession) { | |
625 | // Request changing the resolution of the remote display to | |
626 | // the size of the local browser viewport. | |
627 | ||
628 | // In order to not send multiple requests before the browser-resize | |
629 | // is finished we wait 0.5 seconds before sending the request. | |
630 | clearTimeout(this._resizeTimeout); | |
631 | this._resizeTimeout = setTimeout(this._requestRemoteResize.bind(this), 500); | |
632 | } | |
0e4808bf | 633 | } |
9b84f516 PO |
634 | |
635 | // Update state of clipping in Display object, and make sure the | |
636 | // configured viewport matches the current screen size | |
0e4808bf | 637 | _updateClip() { |
e7dec527 SM |
638 | const curClip = this._display.clipViewport; |
639 | let newClip = this._clipViewport; | |
9b84f516 PO |
640 | |
641 | if (this._scaleViewport) { | |
642 | // Disable viewport clipping if we are scaling | |
e7dec527 | 643 | newClip = false; |
9b84f516 PO |
644 | } |
645 | ||
e7dec527 SM |
646 | if (curClip !== newClip) { |
647 | this._display.clipViewport = newClip; | |
9b84f516 PO |
648 | } |
649 | ||
e7dec527 | 650 | if (newClip) { |
9b84f516 PO |
651 | // When clipping is enabled, the screen is limited to |
652 | // the size of the container. | |
2b5f94fa | 653 | const size = this._screenSize(); |
9b84f516 PO |
654 | this._display.viewportChangeSize(size.w, size.h); |
655 | this._fixScrollbars(); | |
656 | } | |
0e4808bf | 657 | } |
9b84f516 | 658 | |
0e4808bf | 659 | _updateScale() { |
9b84f516 PO |
660 | if (!this._scaleViewport) { |
661 | this._display.scale = 1.0; | |
662 | } else { | |
2b5f94fa | 663 | const size = this._screenSize(); |
9b84f516 PO |
664 | this._display.autoscale(size.w, size.h); |
665 | } | |
666 | this._fixScrollbars(); | |
0e4808bf | 667 | } |
9b84f516 PO |
668 | |
669 | // Requests a change of remote desktop size. This message is an extension | |
670 | // and may only be sent if we have received an ExtendedDesktopSize message | |
0e4808bf | 671 | _requestRemoteResize() { |
9b84f516 PO |
672 | clearTimeout(this._resizeTimeout); |
673 | this._resizeTimeout = null; | |
674 | ||
675 | if (!this._resizeSession || this._viewOnly || | |
676 | !this._supportsSetDesktopSize) { | |
677 | return; | |
678 | } | |
679 | ||
2b5f94fa | 680 | const size = this._screenSize(); |
ab1ace38 PO |
681 | RFB.messages.setDesktopSize(this._sock, |
682 | Math.floor(size.w), Math.floor(size.h), | |
e7dec527 | 683 | this._screenID, this._screenFlags); |
9b84f516 PO |
684 | |
685 | Log.Debug('Requested new desktop size: ' + | |
686 | size.w + 'x' + size.h); | |
0e4808bf | 687 | } |
9b84f516 PO |
688 | |
689 | // Gets the the size of the available screen | |
0e4808bf | 690 | _screenSize() { |
ab1ace38 PO |
691 | let r = this._screen.getBoundingClientRect(); |
692 | return { w: r.width, h: r.height }; | |
0e4808bf | 693 | } |
9b84f516 | 694 | |
0e4808bf | 695 | _fixScrollbars() { |
9b84f516 PO |
696 | // This is a hack because Chrome screws up the calculation |
697 | // for when scrollbars are needed. So to fix it we temporarily | |
698 | // toggle them off and on. | |
2b5f94fa | 699 | const orig = this._screen.style.overflow; |
9b84f516 PO |
700 | this._screen.style.overflow = 'hidden'; |
701 | // Force Chrome to recalculate the layout by asking for | |
702 | // an element's dimensions | |
703 | this._screen.getBoundingClientRect(); | |
704 | this._screen.style.overflow = orig; | |
0e4808bf | 705 | } |
2afda544 | 706 | |
6d6f0db0 SR |
707 | /* |
708 | * Connection states: | |
709 | * connecting | |
710 | * connected | |
711 | * disconnecting | |
712 | * disconnected - permanent state | |
713 | */ | |
0e4808bf | 714 | _updateConnectionState(state) { |
e7dec527 | 715 | const oldstate = this._rfbConnectionState; |
6d6f0db0 SR |
716 | |
717 | if (state === oldstate) { | |
718 | Log.Debug("Already in state '" + state + "', ignoring"); | |
719 | return; | |
720 | } | |
721 | ||
722 | // The 'disconnected' state is permanent for each RFB object | |
723 | if (oldstate === 'disconnected') { | |
724 | Log.Error("Tried changing state of a disconnected RFB object"); | |
725 | return; | |
726 | } | |
727 | ||
728 | // Ensure proper transitions before doing anything | |
729 | switch (state) { | |
730 | case 'connected': | |
731 | if (oldstate !== 'connecting') { | |
732 | Log.Error("Bad transition to connected state, " + | |
733 | "previous connection state: " + oldstate); | |
734 | return; | |
b1dee947 | 735 | } |
6d6f0db0 | 736 | break; |
a7a89626 | 737 | |
6d6f0db0 SR |
738 | case 'disconnected': |
739 | if (oldstate !== 'disconnecting') { | |
740 | Log.Error("Bad transition to disconnected state, " + | |
741 | "previous connection state: " + oldstate); | |
742 | return; | |
743 | } | |
744 | break; | |
a7a89626 | 745 | |
6d6f0db0 SR |
746 | case 'connecting': |
747 | if (oldstate !== '') { | |
748 | Log.Error("Bad transition to connecting state, " + | |
749 | "previous connection state: " + oldstate); | |
750 | return; | |
751 | } | |
752 | break; | |
b1dee947 | 753 | |
6d6f0db0 SR |
754 | case 'disconnecting': |
755 | if (oldstate !== 'connected' && oldstate !== 'connecting') { | |
756 | Log.Error("Bad transition to disconnecting state, " + | |
757 | "previous connection state: " + oldstate); | |
758 | return; | |
759 | } | |
760 | break; | |
a679a97d | 761 | |
6d6f0db0 SR |
762 | default: |
763 | Log.Error("Unknown connection state: " + state); | |
3bb12056 | 764 | return; |
6d6f0db0 | 765 | } |
b1dee947 | 766 | |
6d6f0db0 | 767 | // State change actions |
3bb12056 | 768 | |
e7dec527 | 769 | this._rfbConnectionState = state; |
b2e961d4 | 770 | |
651c23ec | 771 | Log.Debug("New state '" + state + "', was '" + oldstate + "'."); |
b2e961d4 | 772 | |
6d6f0db0 SR |
773 | if (this._disconnTimer && state !== 'disconnecting') { |
774 | Log.Debug("Clearing disconnect timer"); | |
775 | clearTimeout(this._disconnTimer); | |
776 | this._disconnTimer = null; | |
3bb12056 | 777 | |
6d6f0db0 SR |
778 | // make sure we don't get a double event |
779 | this._sock.off('close'); | |
780 | } | |
b2e961d4 | 781 | |
6d6f0db0 | 782 | switch (state) { |
6d6f0db0 SR |
783 | case 'connecting': |
784 | this._connect(); | |
785 | break; | |
b2e961d4 | 786 | |
ee5cae9f | 787 | case 'connected': |
2b5f94fa | 788 | this.dispatchEvent(new CustomEvent("connect", { detail: {} })); |
ee5cae9f SM |
789 | break; |
790 | ||
6d6f0db0 SR |
791 | case 'disconnecting': |
792 | this._disconnect(); | |
b2e961d4 | 793 | |
651c23ec | 794 | this._disconnTimer = setTimeout(() => { |
d472f3f1 | 795 | Log.Error("Disconnection timed out."); |
6d6f0db0 | 796 | this._updateConnectionState('disconnected'); |
651c23ec | 797 | }, DISCONNECT_TIMEOUT * 1000); |
6d6f0db0 | 798 | break; |
ee5cae9f SM |
799 | |
800 | case 'disconnected': | |
2b5f94fa | 801 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 802 | "disconnect", { detail: |
e7dec527 | 803 | { clean: this._rfbCleanDisconnect } })); |
ee5cae9f | 804 | break; |
6d6f0db0 | 805 | } |
0e4808bf | 806 | } |
6d6f0db0 SR |
807 | |
808 | /* Print errors and disconnect | |
809 | * | |
d472f3f1 | 810 | * The parameter 'details' is used for information that |
6d6f0db0 SR |
811 | * should be logged but not sent to the user interface. |
812 | */ | |
0e4808bf | 813 | _fail(details) { |
e7dec527 | 814 | switch (this._rfbConnectionState) { |
6d6f0db0 | 815 | case 'disconnecting': |
d472f3f1 | 816 | Log.Error("Failed when disconnecting: " + details); |
6d6f0db0 SR |
817 | break; |
818 | case 'connected': | |
d472f3f1 | 819 | Log.Error("Failed while connected: " + details); |
6d6f0db0 SR |
820 | break; |
821 | case 'connecting': | |
d472f3f1 | 822 | Log.Error("Failed when connecting: " + details); |
6d6f0db0 SR |
823 | break; |
824 | default: | |
d472f3f1 | 825 | Log.Error("RFB failure: " + details); |
6d6f0db0 SR |
826 | break; |
827 | } | |
e7dec527 | 828 | this._rfbCleanDisconnect = false; //This is sent to the UI |
6d6f0db0 SR |
829 | |
830 | // Transition to disconnected without waiting for socket to close | |
831 | this._updateConnectionState('disconnecting'); | |
832 | this._updateConnectionState('disconnected'); | |
833 | ||
834 | return false; | |
0e4808bf | 835 | } |
6d6f0db0 | 836 | |
0e4808bf | 837 | _setCapability(cap, val) { |
832be262 | 838 | this._capabilities[cap] = val; |
2b5f94fa | 839 | this.dispatchEvent(new CustomEvent("capabilities", |
0e4808bf JD |
840 | { detail: { capabilities: this._capabilities } })); |
841 | } | |
b1dee947 | 842 | |
00674385 | 843 | _handleMessage() { |
8a189a62 | 844 | if (this._sock.rQlen === 0) { |
00674385 | 845 | Log.Warn("handleMessage called on an empty receive queue"); |
6d6f0db0 SR |
846 | return; |
847 | } | |
b1dee947 | 848 | |
e7dec527 | 849 | switch (this._rfbConnectionState) { |
6d6f0db0 SR |
850 | case 'disconnected': |
851 | Log.Error("Got data while disconnected"); | |
852 | break; | |
853 | case 'connected': | |
854 | while (true) { | |
855 | if (this._flushing) { | |
856 | break; | |
857 | } | |
00674385 | 858 | if (!this._normalMsg()) { |
6d6f0db0 SR |
859 | break; |
860 | } | |
8a189a62 | 861 | if (this._sock.rQlen === 0) { |
6d6f0db0 SR |
862 | break; |
863 | } | |
864 | } | |
865 | break; | |
866 | default: | |
00674385 | 867 | this._initMsg(); |
6d6f0db0 SR |
868 | break; |
869 | } | |
0e4808bf | 870 | } |
3bb12056 | 871 | |
0e4808bf | 872 | _handleKeyEvent(keysym, code, down) { |
d0703d1b | 873 | this.sendKey(keysym, code, down); |
0e4808bf | 874 | } |
06a9ef0c | 875 | |
50cde2fa PO |
876 | _handleMouse(ev) { |
877 | /* | |
878 | * We don't check connection status or viewOnly here as the | |
879 | * mouse events might be used to control the viewport | |
880 | */ | |
881 | ||
882 | if (ev.type === 'click') { | |
883 | /* | |
884 | * Note: This is only needed for the 'click' event as it fails | |
885 | * to fire properly for the target element so we have | |
886 | * to listen on the document element instead. | |
887 | */ | |
888 | if (ev.target !== this._canvas) { | |
889 | return; | |
890 | } | |
891 | } | |
892 | ||
893 | // FIXME: if we're in view-only and not dragging, | |
894 | // should we stop events? | |
895 | ev.stopPropagation(); | |
896 | ev.preventDefault(); | |
897 | ||
898 | if ((ev.type === 'click') || (ev.type === 'contextmenu')) { | |
899 | return; | |
900 | } | |
901 | ||
902 | let pos = clientToElement(ev.clientX, ev.clientY, | |
903 | this._canvas); | |
904 | ||
905 | switch (ev.type) { | |
906 | case 'mousedown': | |
907 | setCapture(this._canvas); | |
908 | this._handleMouseButton(pos.x, pos.y, | |
909 | true, 1 << ev.button); | |
910 | break; | |
911 | case 'mouseup': | |
912 | this._handleMouseButton(pos.x, pos.y, | |
913 | false, 1 << ev.button); | |
914 | break; | |
915 | case 'mousemove': | |
916 | this._handleMouseMove(pos.x, pos.y); | |
917 | break; | |
918 | } | |
919 | } | |
920 | ||
0e4808bf | 921 | _handleMouseButton(x, y, down, bmask) { |
0460e5fd | 922 | if (this.dragViewport) { |
6d6f0db0 SR |
923 | if (down && !this._viewportDragging) { |
924 | this._viewportDragging = true; | |
925 | this._viewportDragPos = {'x': x, 'y': y}; | |
898cd32c | 926 | this._viewportHasMoved = false; |
a7127fee | 927 | |
6d6f0db0 | 928 | // Skip sending mouse events |
b1dee947 | 929 | return; |
6d6f0db0 SR |
930 | } else { |
931 | this._viewportDragging = false; | |
8db09746 | 932 | |
898cd32c PO |
933 | // If we actually performed a drag then we are done |
934 | // here and should not send any mouse events | |
935 | if (this._viewportHasMoved) { | |
936 | return; | |
6d6f0db0 | 937 | } |
898cd32c PO |
938 | |
939 | // Otherwise we treat this as a mouse click event. | |
940 | // Send the button down event here, as the button up | |
941 | // event is sent at the end of this function. | |
150596be | 942 | this._sendMouse(x, y, bmask); |
b1dee947 | 943 | } |
6d6f0db0 | 944 | } |
8db09746 | 945 | |
150596be SM |
946 | // Flush waiting move event first |
947 | if (this._mouseMoveTimer !== null) { | |
948 | clearTimeout(this._mouseMoveTimer); | |
949 | this._mouseMoveTimer = null; | |
950 | this._sendMouse(x, y, this._mouseButtonMask); | |
951 | } | |
8f06673a | 952 | |
150596be SM |
953 | if (down) { |
954 | this._mouseButtonMask |= bmask; | |
955 | } else { | |
956 | this._mouseButtonMask &= ~bmask; | |
957 | } | |
958 | ||
959 | this._sendMouse(x, y, this._mouseButtonMask); | |
0e4808bf | 960 | } |
8db09746 | 961 | |
0e4808bf | 962 | _handleMouseMove(x, y) { |
6d6f0db0 | 963 | if (this._viewportDragging) { |
2b5f94fa JD |
964 | const deltaX = this._viewportDragPos.x - x; |
965 | const deltaY = this._viewportDragPos.y - y; | |
8db09746 | 966 | |
6d6f0db0 SR |
967 | if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold || |
968 | Math.abs(deltaY) > dragThreshold)) { | |
969 | this._viewportHasMoved = true; | |
27e77d46 | 970 | |
6d6f0db0 SR |
971 | this._viewportDragPos = {'x': x, 'y': y}; |
972 | this._display.viewportChangePos(deltaX, deltaY); | |
b50f3406 | 973 | } |
8db09746 | 974 | |
6d6f0db0 SR |
975 | // Skip sending mouse events |
976 | return; | |
977 | } | |
b1dee947 | 978 | |
150596be SM |
979 | this._mousePos = { 'x': x, 'y': y }; |
980 | ||
981 | // Limit many mouse move events to one every MOUSE_MOVE_DELAY ms | |
982 | if (this._mouseMoveTimer == null) { | |
983 | ||
984 | const timeSinceLastMove = Date.now() - this._mouseLastMoveTime; | |
985 | if (timeSinceLastMove > MOUSE_MOVE_DELAY) { | |
986 | this._sendMouse(x, y, this._mouseButtonMask); | |
987 | this._mouseLastMoveTime = Date.now(); | |
988 | } else { | |
989 | // Too soon since the latest move, wait the remaining time | |
990 | this._mouseMoveTimer = setTimeout(() => { | |
991 | this._handleDelayedMouseMove(); | |
992 | }, MOUSE_MOVE_DELAY - timeSinceLastMove); | |
993 | } | |
994 | } | |
995 | } | |
b1dee947 | 996 | |
150596be SM |
997 | _handleDelayedMouseMove() { |
998 | this._mouseMoveTimer = null; | |
999 | this._sendMouse(this._mousePos.x, this._mousePos.y, | |
1000 | this._mouseButtonMask); | |
1001 | this._mouseLastMoveTime = Date.now(); | |
1002 | } | |
1003 | ||
1004 | _sendMouse(x, y, mask) { | |
e7dec527 | 1005 | if (this._rfbConnectionState !== 'connected') { return; } |
150596be SM |
1006 | if (this._viewOnly) { return; } // View only, skip mouse events |
1007 | ||
1008 | RFB.messages.pointerEvent(this._sock, this._display.absX(x), | |
1009 | this._display.absY(y), mask); | |
0e4808bf | 1010 | } |
b1dee947 | 1011 | |
f84bc57b PO |
1012 | _handleWheel(ev) { |
1013 | if (this._rfbConnectionState !== 'connected') { return; } | |
1014 | if (this._viewOnly) { return; } // View only, skip mouse events | |
1015 | ||
1016 | ev.stopPropagation(); | |
1017 | ev.preventDefault(); | |
1018 | ||
1019 | let pos = clientToElement(ev.clientX, ev.clientY, | |
1020 | this._canvas); | |
1021 | ||
1022 | let dX = ev.deltaX; | |
1023 | let dY = ev.deltaY; | |
1024 | ||
1025 | // Pixel units unless it's non-zero. | |
1026 | // Note that if deltamode is line or page won't matter since we aren't | |
1027 | // sending the mouse wheel delta to the server anyway. | |
1028 | // The difference between pixel and line can be important however since | |
1029 | // we have a threshold that can be smaller than the line height. | |
1030 | if (ev.deltaMode !== 0) { | |
1031 | dX *= WHEEL_LINE_HEIGHT; | |
1032 | dY *= WHEEL_LINE_HEIGHT; | |
1033 | } | |
1034 | ||
1035 | // Mouse wheel events are sent in steps over VNC. This means that the VNC | |
1036 | // protocol can't handle a wheel event with specific distance or speed. | |
1037 | // Therefor, if we get a lot of small mouse wheel events we combine them. | |
1038 | this._accumulatedWheelDeltaX += dX; | |
1039 | this._accumulatedWheelDeltaY += dY; | |
1040 | ||
1041 | // Generate a mouse wheel step event when the accumulated delta | |
1042 | // for one of the axes is large enough. | |
88589a44 | 1043 | if (Math.abs(this._accumulatedWheelDeltaX) >= WHEEL_STEP) { |
f84bc57b PO |
1044 | if (this._accumulatedWheelDeltaX < 0) { |
1045 | this._handleMouseButton(pos.x, pos.y, true, 1 << 5); | |
1046 | this._handleMouseButton(pos.x, pos.y, false, 1 << 5); | |
1047 | } else if (this._accumulatedWheelDeltaX > 0) { | |
1048 | this._handleMouseButton(pos.x, pos.y, true, 1 << 6); | |
1049 | this._handleMouseButton(pos.x, pos.y, false, 1 << 6); | |
1050 | } | |
1051 | ||
1052 | this._accumulatedWheelDeltaX = 0; | |
1053 | } | |
88589a44 | 1054 | if (Math.abs(this._accumulatedWheelDeltaY) >= WHEEL_STEP) { |
f84bc57b PO |
1055 | if (this._accumulatedWheelDeltaY < 0) { |
1056 | this._handleMouseButton(pos.x, pos.y, true, 1 << 3); | |
1057 | this._handleMouseButton(pos.x, pos.y, false, 1 << 3); | |
1058 | } else if (this._accumulatedWheelDeltaY > 0) { | |
1059 | this._handleMouseButton(pos.x, pos.y, true, 1 << 4); | |
1060 | this._handleMouseButton(pos.x, pos.y, false, 1 << 4); | |
1061 | } | |
1062 | ||
1063 | this._accumulatedWheelDeltaY = 0; | |
1064 | } | |
1065 | } | |
1066 | ||
32ed7c67 SM |
1067 | _fakeMouseMove(ev, elementX, elementY) { |
1068 | this._handleMouseMove(elementX, elementY); | |
1069 | this._cursor.move(ev.detail.clientX, ev.detail.clientY); | |
1070 | } | |
1071 | ||
8be924c9 PO |
1072 | _handleTapEvent(ev, bmask) { |
1073 | let pos = clientToElement(ev.detail.clientX, ev.detail.clientY, | |
1074 | this._canvas); | |
1075 | ||
1076 | // If the user quickly taps multiple times we assume they meant to | |
1077 | // hit the same spot, so slightly adjust coordinates | |
1078 | ||
1079 | if ((this._gestureLastTapTime !== null) && | |
1080 | ((Date.now() - this._gestureLastTapTime) < DOUBLE_TAP_TIMEOUT) && | |
1081 | (this._gestureFirstDoubleTapEv.detail.type === ev.detail.type)) { | |
1082 | let dx = this._gestureFirstDoubleTapEv.detail.clientX - ev.detail.clientX; | |
1083 | let dy = this._gestureFirstDoubleTapEv.detail.clientY - ev.detail.clientY; | |
1084 | let distance = Math.hypot(dx, dy); | |
1085 | ||
1086 | if (distance < DOUBLE_TAP_THRESHOLD) { | |
1087 | pos = clientToElement(this._gestureFirstDoubleTapEv.detail.clientX, | |
1088 | this._gestureFirstDoubleTapEv.detail.clientY, | |
1089 | this._canvas); | |
1090 | } else { | |
1091 | this._gestureFirstDoubleTapEv = ev; | |
1092 | } | |
1093 | } else { | |
1094 | this._gestureFirstDoubleTapEv = ev; | |
1095 | } | |
1096 | this._gestureLastTapTime = Date.now(); | |
1097 | ||
32ed7c67 | 1098 | this._fakeMouseMove(this._gestureFirstDoubleTapEv, pos.x, pos.y); |
8be924c9 PO |
1099 | this._handleMouseButton(pos.x, pos.y, true, bmask); |
1100 | this._handleMouseButton(pos.x, pos.y, false, bmask); | |
1101 | } | |
1102 | ||
1103 | _handleGesture(ev) { | |
1104 | let magnitude; | |
1105 | ||
1106 | let pos = clientToElement(ev.detail.clientX, ev.detail.clientY, | |
1107 | this._canvas); | |
1108 | switch (ev.type) { | |
1109 | case 'gesturestart': | |
1110 | switch (ev.detail.type) { | |
1111 | case 'onetap': | |
1112 | this._handleTapEvent(ev, 0x1); | |
1113 | break; | |
1114 | case 'twotap': | |
1115 | this._handleTapEvent(ev, 0x4); | |
1116 | break; | |
1117 | case 'threetap': | |
1118 | this._handleTapEvent(ev, 0x2); | |
1119 | break; | |
1120 | case 'drag': | |
32ed7c67 | 1121 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1122 | this._handleMouseButton(pos.x, pos.y, true, 0x1); |
1123 | break; | |
1124 | case 'longpress': | |
32ed7c67 | 1125 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1126 | this._handleMouseButton(pos.x, pos.y, true, 0x4); |
1127 | break; | |
1128 | ||
1129 | case 'twodrag': | |
1130 | this._gestureLastMagnitudeX = ev.detail.magnitudeX; | |
1131 | this._gestureLastMagnitudeY = ev.detail.magnitudeY; | |
32ed7c67 | 1132 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1133 | break; |
1134 | case 'pinch': | |
1135 | this._gestureLastMagnitudeX = Math.hypot(ev.detail.magnitudeX, | |
1136 | ev.detail.magnitudeY); | |
32ed7c67 | 1137 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1138 | break; |
1139 | } | |
1140 | break; | |
1141 | ||
1142 | case 'gesturemove': | |
1143 | switch (ev.detail.type) { | |
1144 | case 'onetap': | |
1145 | case 'twotap': | |
1146 | case 'threetap': | |
1147 | break; | |
1148 | case 'drag': | |
1149 | case 'longpress': | |
32ed7c67 | 1150 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1151 | break; |
1152 | case 'twodrag': | |
1153 | // Always scroll in the same position. | |
1154 | // We don't know if the mouse was moved so we need to move it | |
1155 | // every update. | |
32ed7c67 | 1156 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1157 | while ((ev.detail.magnitudeY - this._gestureLastMagnitudeY) > GESTURE_SCRLSENS) { |
1158 | this._handleMouseButton(pos.x, pos.y, true, 0x8); | |
1159 | this._handleMouseButton(pos.x, pos.y, false, 0x8); | |
1160 | this._gestureLastMagnitudeY += GESTURE_SCRLSENS; | |
1161 | } | |
1162 | while ((ev.detail.magnitudeY - this._gestureLastMagnitudeY) < -GESTURE_SCRLSENS) { | |
1163 | this._handleMouseButton(pos.x, pos.y, true, 0x10); | |
1164 | this._handleMouseButton(pos.x, pos.y, false, 0x10); | |
1165 | this._gestureLastMagnitudeY -= GESTURE_SCRLSENS; | |
1166 | } | |
1167 | while ((ev.detail.magnitudeX - this._gestureLastMagnitudeX) > GESTURE_SCRLSENS) { | |
1168 | this._handleMouseButton(pos.x, pos.y, true, 0x20); | |
1169 | this._handleMouseButton(pos.x, pos.y, false, 0x20); | |
1170 | this._gestureLastMagnitudeX += GESTURE_SCRLSENS; | |
1171 | } | |
1172 | while ((ev.detail.magnitudeX - this._gestureLastMagnitudeX) < -GESTURE_SCRLSENS) { | |
1173 | this._handleMouseButton(pos.x, pos.y, true, 0x40); | |
1174 | this._handleMouseButton(pos.x, pos.y, false, 0x40); | |
1175 | this._gestureLastMagnitudeX -= GESTURE_SCRLSENS; | |
1176 | } | |
1177 | break; | |
1178 | case 'pinch': | |
1179 | // Always scroll in the same position. | |
1180 | // We don't know if the mouse was moved so we need to move it | |
1181 | // every update. | |
32ed7c67 | 1182 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1183 | magnitude = Math.hypot(ev.detail.magnitudeX, ev.detail.magnitudeY); |
1184 | if (Math.abs(magnitude - this._gestureLastMagnitudeX) > GESTURE_ZOOMSENS) { | |
1185 | this._handleKeyEvent(KeyTable.XK_Control_L, "ControlLeft", true); | |
1186 | while ((magnitude - this._gestureLastMagnitudeX) > GESTURE_ZOOMSENS) { | |
1187 | this._handleMouseButton(pos.x, pos.y, true, 0x8); | |
1188 | this._handleMouseButton(pos.x, pos.y, false, 0x8); | |
1189 | this._gestureLastMagnitudeX += GESTURE_ZOOMSENS; | |
1190 | } | |
1191 | while ((magnitude - this._gestureLastMagnitudeX) < -GESTURE_ZOOMSENS) { | |
1192 | this._handleMouseButton(pos.x, pos.y, true, 0x10); | |
1193 | this._handleMouseButton(pos.x, pos.y, false, 0x10); | |
1194 | this._gestureLastMagnitudeX -= GESTURE_ZOOMSENS; | |
1195 | } | |
1196 | } | |
1197 | this._handleKeyEvent(KeyTable.XK_Control_L, "ControlLeft", false); | |
32ed7c67 | 1198 | break; |
8be924c9 PO |
1199 | } |
1200 | break; | |
1201 | ||
1202 | case 'gestureend': | |
1203 | switch (ev.detail.type) { | |
1204 | case 'onetap': | |
1205 | case 'twotap': | |
1206 | case 'threetap': | |
1207 | case 'pinch': | |
1208 | case 'twodrag': | |
1209 | break; | |
1210 | case 'drag': | |
32ed7c67 | 1211 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1212 | this._handleMouseButton(pos.x, pos.y, false, 0x1); |
1213 | break; | |
1214 | case 'longpress': | |
32ed7c67 | 1215 | this._fakeMouseMove(ev, pos.x, pos.y); |
8be924c9 PO |
1216 | this._handleMouseButton(pos.x, pos.y, false, 0x4); |
1217 | break; | |
1218 | } | |
1219 | break; | |
1220 | } | |
1221 | } | |
1222 | ||
6d6f0db0 | 1223 | // Message Handlers |
27e77d46 | 1224 | |
00674385 | 1225 | _negotiateProtocolVersion() { |
c13df5ae PO |
1226 | if (this._sock.rQwait("version", 12)) { |
1227 | return false; | |
6d6f0db0 | 1228 | } |
32df3fdb | 1229 | |
2b5f94fa | 1230 | const sversion = this._sock.rQshiftStr(12).substr(4, 7); |
6d6f0db0 | 1231 | Log.Info("Server ProtocolVersion: " + sversion); |
e7dec527 | 1232 | let isRepeater = 0; |
6d6f0db0 SR |
1233 | switch (sversion) { |
1234 | case "000.000": // UltraVNC repeater | |
e7dec527 | 1235 | isRepeater = 1; |
6d6f0db0 SR |
1236 | break; |
1237 | case "003.003": | |
1238 | case "003.006": // UltraVNC | |
1239 | case "003.889": // Apple Remote Desktop | |
e7dec527 | 1240 | this._rfbVersion = 3.3; |
6d6f0db0 SR |
1241 | break; |
1242 | case "003.007": | |
e7dec527 | 1243 | this._rfbVersion = 3.7; |
6d6f0db0 SR |
1244 | break; |
1245 | case "003.008": | |
1246 | case "004.000": // Intel AMT KVM | |
1247 | case "004.001": // RealVNC 4.6 | |
1248 | case "005.000": // RealVNC 5.3 | |
e7dec527 | 1249 | this._rfbVersion = 3.8; |
6d6f0db0 SR |
1250 | break; |
1251 | default: | |
d472f3f1 | 1252 | return this._fail("Invalid server version " + sversion); |
6d6f0db0 | 1253 | } |
8db09746 | 1254 | |
e7dec527 | 1255 | if (isRepeater) { |
2b5f94fa | 1256 | let repeaterID = "ID:" + this._repeaterID; |
6d6f0db0 SR |
1257 | while (repeaterID.length < 250) { |
1258 | repeaterID += "\0"; | |
b1dee947 | 1259 | } |
ea858bfa | 1260 | this._sock.sendString(repeaterID); |
6d6f0db0 SR |
1261 | return true; |
1262 | } | |
b1dee947 | 1263 | |
e7dec527 SM |
1264 | if (this._rfbVersion > this._rfbMaxVersion) { |
1265 | this._rfbVersion = this._rfbMaxVersion; | |
6d6f0db0 | 1266 | } |
b1dee947 | 1267 | |
e7dec527 SM |
1268 | const cversion = "00" + parseInt(this._rfbVersion, 10) + |
1269 | ".00" + ((this._rfbVersion * 10) % 10); | |
ea858bfa | 1270 | this._sock.sendString("RFB " + cversion + "\n"); |
6d6f0db0 | 1271 | Log.Debug('Sent ProtocolVersion: ' + cversion); |
b1dee947 | 1272 | |
e7dec527 | 1273 | this._rfbInitState = 'Security'; |
0e4808bf | 1274 | } |
b1dee947 | 1275 | |
00674385 | 1276 | _negotiateSecurity() { |
e7dec527 | 1277 | if (this._rfbVersion >= 3.7) { |
6d6f0db0 | 1278 | // Server sends supported list, client decides |
e7dec527 SM |
1279 | const numTypes = this._sock.rQshift8(); |
1280 | if (this._sock.rQwait("security type", numTypes, 1)) { return false; } | |
b1dee947 | 1281 | |
e7dec527 SM |
1282 | if (numTypes === 0) { |
1283 | this._rfbInitState = "SecurityReason"; | |
1284 | this._securityContext = "no security types"; | |
1285 | this._securityStatus = 1; | |
00674385 | 1286 | return this._initMsg(); |
6d6f0db0 SR |
1287 | } |
1288 | ||
e7dec527 | 1289 | const types = this._sock.rQshiftBytes(numTypes); |
6d6f0db0 SR |
1290 | Log.Debug("Server security types: " + types); |
1291 | ||
1292 | // Look for each auth in preferred order | |
5b5b7474 | 1293 | if (types.includes(1)) { |
e7dec527 | 1294 | this._rfbAuthScheme = 1; // None |
5b5b7474 | 1295 | } else if (types.includes(22)) { |
e7dec527 | 1296 | this._rfbAuthScheme = 22; // XVP |
5b5b7474 | 1297 | } else if (types.includes(16)) { |
e7dec527 | 1298 | this._rfbAuthScheme = 16; // Tight |
5b5b7474 | 1299 | } else if (types.includes(2)) { |
e7dec527 | 1300 | this._rfbAuthScheme = 2; // VNC Auth |
5b5b7474 | 1301 | } else if (types.includes(19)) { |
e7dec527 | 1302 | this._rfbAuthScheme = 19; // VeNCrypt Auth |
6d6f0db0 | 1303 | } else { |
d472f3f1 | 1304 | return this._fail("Unsupported security types (types: " + types + ")"); |
8db09746 | 1305 | } |
b1dee947 | 1306 | |
e7dec527 | 1307 | this._sock.send([this._rfbAuthScheme]); |
6d6f0db0 SR |
1308 | } else { |
1309 | // Server decides | |
1310 | if (this._sock.rQwait("security scheme", 4)) { return false; } | |
e7dec527 | 1311 | this._rfbAuthScheme = this._sock.rQshift32(); |
3bb15d4a | 1312 | |
e7dec527 SM |
1313 | if (this._rfbAuthScheme == 0) { |
1314 | this._rfbInitState = "SecurityReason"; | |
1315 | this._securityContext = "authentication scheme"; | |
1316 | this._securityStatus = 1; | |
00674385 | 1317 | return this._initMsg(); |
3bb15d4a | 1318 | } |
6d6f0db0 | 1319 | } |
b1dee947 | 1320 | |
e7dec527 SM |
1321 | this._rfbInitState = 'Authentication'; |
1322 | Log.Debug('Authenticating using scheme: ' + this._rfbAuthScheme); | |
b1dee947 | 1323 | |
00674385 | 1324 | return this._initMsg(); // jump to authentication |
0e4808bf | 1325 | } |
b1dee947 | 1326 | |
00674385 | 1327 | _handleSecurityReason() { |
d472f3f1 SM |
1328 | if (this._sock.rQwait("reason length", 4)) { |
1329 | return false; | |
1330 | } | |
2b5f94fa | 1331 | const strlen = this._sock.rQshift32(); |
d472f3f1 SM |
1332 | let reason = ""; |
1333 | ||
1334 | if (strlen > 0) { | |
3bb15d4a | 1335 | if (this._sock.rQwait("reason", strlen, 4)) { return false; } |
d472f3f1 SM |
1336 | reason = this._sock.rQshiftStr(strlen); |
1337 | } | |
1338 | ||
1339 | if (reason !== "") { | |
2b5f94fa | 1340 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 1341 | "securityfailure", |
e7dec527 | 1342 | { detail: { status: this._securityStatus, |
3bb15d4a | 1343 | reason: reason } })); |
d472f3f1 | 1344 | |
3bb15d4a | 1345 | return this._fail("Security negotiation failed on " + |
e7dec527 | 1346 | this._securityContext + |
d472f3f1 SM |
1347 | " (reason: " + reason + ")"); |
1348 | } else { | |
2b5f94fa | 1349 | this.dispatchEvent(new CustomEvent( |
d472f3f1 | 1350 | "securityfailure", |
e7dec527 | 1351 | { detail: { status: this._securityStatus } })); |
d472f3f1 | 1352 | |
3bb15d4a | 1353 | return this._fail("Security negotiation failed on " + |
e7dec527 | 1354 | this._securityContext); |
d472f3f1 | 1355 | } |
0e4808bf | 1356 | } |
d472f3f1 | 1357 | |
6d6f0db0 | 1358 | // authentication |
00674385 | 1359 | _negotiateXvpAuth() { |
e7dec527 SM |
1360 | if (this._rfbCredentials.username === undefined || |
1361 | this._rfbCredentials.password === undefined || | |
1362 | this._rfbCredentials.target === undefined) { | |
2b5f94fa JD |
1363 | this.dispatchEvent(new CustomEvent( |
1364 | "credentialsrequired", | |
1365 | { detail: { types: ["username", "password", "target"] } })); | |
7b536961 | 1366 | return false; |
6d6f0db0 | 1367 | } |
0ee5ca6e | 1368 | |
e7dec527 SM |
1369 | const xvpAuthStr = String.fromCharCode(this._rfbCredentials.username.length) + |
1370 | String.fromCharCode(this._rfbCredentials.target.length) + | |
1371 | this._rfbCredentials.username + | |
1372 | this._rfbCredentials.target; | |
ea858bfa | 1373 | this._sock.sendString(xvpAuthStr); |
e7dec527 | 1374 | this._rfbAuthScheme = 2; |
00674385 | 1375 | return this._negotiateAuthentication(); |
0e4808bf | 1376 | } |
6d6f0db0 | 1377 | |
a1015d8d | 1378 | // VeNCrypt authentication, currently only supports version 0.2 and only Plain subtype |
00674385 | 1379 | _negotiateVeNCryptAuth() { |
a1015d8d FS |
1380 | |
1381 | // waiting for VeNCrypt version | |
e7dec527 | 1382 | if (this._rfbVeNCryptState == 0) { |
a1015d8d FS |
1383 | if (this._sock.rQwait("vencrypt version", 2)) { return false; } |
1384 | ||
1385 | const major = this._sock.rQshift8(); | |
1386 | const minor = this._sock.rQshift8(); | |
1387 | ||
1388 | if (!(major == 0 && minor == 2)) { | |
1389 | return this._fail("Unsupported VeNCrypt version " + major + "." + minor); | |
1390 | } | |
1391 | ||
1392 | this._sock.send([0, 2]); | |
e7dec527 | 1393 | this._rfbVeNCryptState = 1; |
a1015d8d FS |
1394 | } |
1395 | ||
1396 | // waiting for ACK | |
e7dec527 | 1397 | if (this._rfbVeNCryptState == 1) { |
a1015d8d FS |
1398 | if (this._sock.rQwait("vencrypt ack", 1)) { return false; } |
1399 | ||
1400 | const res = this._sock.rQshift8(); | |
1401 | ||
1402 | if (res != 0) { | |
1403 | return this._fail("VeNCrypt failure " + res); | |
1404 | } | |
1405 | ||
e7dec527 | 1406 | this._rfbVeNCryptState = 2; |
a1015d8d FS |
1407 | } |
1408 | // must fall through here (i.e. no "else if"), beacause we may have already received | |
1409 | // the subtypes length and won't be called again | |
1410 | ||
e7dec527 | 1411 | if (this._rfbVeNCryptState == 2) { // waiting for subtypes length |
a1015d8d FS |
1412 | if (this._sock.rQwait("vencrypt subtypes length", 1)) { return false; } |
1413 | ||
e7dec527 SM |
1414 | const subtypesLength = this._sock.rQshift8(); |
1415 | if (subtypesLength < 1) { | |
a1015d8d FS |
1416 | return this._fail("VeNCrypt subtypes empty"); |
1417 | } | |
1418 | ||
e7dec527 SM |
1419 | this._rfbVeNCryptSubtypesLength = subtypesLength; |
1420 | this._rfbVeNCryptState = 3; | |
a1015d8d FS |
1421 | } |
1422 | ||
1423 | // waiting for subtypes list | |
e7dec527 SM |
1424 | if (this._rfbVeNCryptState == 3) { |
1425 | if (this._sock.rQwait("vencrypt subtypes", 4 * this._rfbVeNCryptSubtypesLength)) { return false; } | |
a1015d8d FS |
1426 | |
1427 | const subtypes = []; | |
e7dec527 | 1428 | for (let i = 0; i < this._rfbVeNCryptSubtypesLength; i++) { |
a1015d8d FS |
1429 | subtypes.push(this._sock.rQshift32()); |
1430 | } | |
1431 | ||
1432 | // 256 = Plain subtype | |
1433 | if (subtypes.indexOf(256) != -1) { | |
1434 | // 0x100 = 256 | |
1435 | this._sock.send([0, 0, 1, 0]); | |
e7dec527 | 1436 | this._rfbVeNCryptState = 4; |
a1015d8d FS |
1437 | } else { |
1438 | return this._fail("VeNCrypt Plain subtype not offered by server"); | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | // negotiated Plain subtype, server waits for password | |
e7dec527 SM |
1443 | if (this._rfbVeNCryptState == 4) { |
1444 | if (!this._rfbCredentials.username || | |
1445 | !this._rfbCredentials.password) { | |
a1015d8d FS |
1446 | this.dispatchEvent(new CustomEvent( |
1447 | "credentialsrequired", | |
1448 | { detail: { types: ["username", "password"] } })); | |
1449 | return false; | |
1450 | } | |
1451 | ||
e7dec527 SM |
1452 | const user = encodeUTF8(this._rfbCredentials.username); |
1453 | const pass = encodeUTF8(this._rfbCredentials.password); | |
a1015d8d FS |
1454 | |
1455 | // XXX we assume lengths are <= 255 (should not be an issue in the real world) | |
1456 | this._sock.send([0, 0, 0, user.length]); | |
1457 | this._sock.send([0, 0, 0, pass.length]); | |
ea858bfa SM |
1458 | this._sock.sendString(user); |
1459 | this._sock.sendString(pass); | |
a1015d8d | 1460 | |
e7dec527 | 1461 | this._rfbInitState = "SecurityResult"; |
a1015d8d FS |
1462 | return true; |
1463 | } | |
1464 | } | |
1465 | ||
00674385 | 1466 | _negotiateStdVNCAuth() { |
abfe5b7a SM |
1467 | if (this._sock.rQwait("auth challenge", 16)) { return false; } |
1468 | ||
e7dec527 | 1469 | if (this._rfbCredentials.password === undefined) { |
2b5f94fa JD |
1470 | this.dispatchEvent(new CustomEvent( |
1471 | "credentialsrequired", | |
1472 | { detail: { types: ["password"] } })); | |
6d6f0db0 SR |
1473 | return false; |
1474 | } | |
b1dee947 | 1475 | |
6d6f0db0 | 1476 | // TODO(directxman12): make genDES not require an Array |
2b5f94fa | 1477 | const challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16)); |
e7dec527 | 1478 | const response = RFB.genDES(this._rfbCredentials.password, challenge); |
6d6f0db0 | 1479 | this._sock.send(response); |
e7dec527 | 1480 | this._rfbInitState = "SecurityResult"; |
6d6f0db0 | 1481 | return true; |
0e4808bf | 1482 | } |
6d6f0db0 | 1483 | |
00674385 | 1484 | _negotiateTightUnixAuth() { |
e7dec527 SM |
1485 | if (this._rfbCredentials.username === undefined || |
1486 | this._rfbCredentials.password === undefined) { | |
1c982614 CKB |
1487 | this.dispatchEvent(new CustomEvent( |
1488 | "credentialsrequired", | |
1489 | { detail: { types: ["username", "password"] } })); | |
1490 | return false; | |
1491 | } | |
1492 | ||
e7dec527 SM |
1493 | this._sock.send([0, 0, 0, this._rfbCredentials.username.length]); |
1494 | this._sock.send([0, 0, 0, this._rfbCredentials.password.length]); | |
ea858bfa SM |
1495 | this._sock.sendString(this._rfbCredentials.username); |
1496 | this._sock.sendString(this._rfbCredentials.password); | |
e7dec527 | 1497 | this._rfbInitState = "SecurityResult"; |
1c982614 CKB |
1498 | return true; |
1499 | } | |
1500 | ||
00674385 | 1501 | _negotiateTightTunnels(numTunnels) { |
2b5f94fa | 1502 | const clientSupportedTunnelTypes = { |
6d6f0db0 SR |
1503 | 0: { vendor: 'TGHT', signature: 'NOTUNNEL' } |
1504 | }; | |
2b5f94fa | 1505 | const serverSupportedTunnelTypes = {}; |
6d6f0db0 | 1506 | // receive tunnel capabilities |
2b5f94fa | 1507 | for (let i = 0; i < numTunnels; i++) { |
e7dec527 SM |
1508 | const capCode = this._sock.rQshift32(); |
1509 | const capVendor = this._sock.rQshiftStr(4); | |
1510 | const capSignature = this._sock.rQshiftStr(8); | |
1511 | serverSupportedTunnelTypes[capCode] = { vendor: capVendor, signature: capSignature }; | |
6d6f0db0 SR |
1512 | } |
1513 | ||
e6bad200 PO |
1514 | Log.Debug("Server Tight tunnel types: " + serverSupportedTunnelTypes); |
1515 | ||
8f47bd29 PO |
1516 | // Siemens touch panels have a VNC server that supports NOTUNNEL, |
1517 | // but forgets to advertise it. Try to detect such servers by | |
1518 | // looking for their custom tunnel type. | |
1519 | if (serverSupportedTunnelTypes[1] && | |
1520 | (serverSupportedTunnelTypes[1].vendor === "SICR") && | |
1521 | (serverSupportedTunnelTypes[1].signature === "SCHANNEL")) { | |
1522 | Log.Debug("Detected Siemens server. Assuming NOTUNNEL support."); | |
1523 | serverSupportedTunnelTypes[0] = { vendor: 'TGHT', signature: 'NOTUNNEL' }; | |
1524 | } | |
1525 | ||
6d6f0db0 SR |
1526 | // choose the notunnel type |
1527 | if (serverSupportedTunnelTypes[0]) { | |
1528 | if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor || | |
1529 | serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) { | |
d472f3f1 | 1530 | return this._fail("Client's tunnel type had the incorrect " + |
6d6f0db0 | 1531 | "vendor or signature"); |
b1dee947 | 1532 | } |
e6bad200 | 1533 | Log.Debug("Selected tunnel type: " + clientSupportedTunnelTypes[0]); |
6d6f0db0 SR |
1534 | this._sock.send([0, 0, 0, 0]); // use NOTUNNEL |
1535 | return false; // wait until we receive the sub auth count to continue | |
1536 | } else { | |
d472f3f1 | 1537 | return this._fail("Server wanted tunnels, but doesn't support " + |
6d6f0db0 SR |
1538 | "the notunnel type"); |
1539 | } | |
0e4808bf | 1540 | } |
b1dee947 | 1541 | |
00674385 | 1542 | _negotiateTightAuth() { |
e7dec527 | 1543 | if (!this._rfbTightVNC) { // first pass, do the tunnel negotiation |
6d6f0db0 | 1544 | if (this._sock.rQwait("num tunnels", 4)) { return false; } |
2b5f94fa | 1545 | const numTunnels = this._sock.rQshift32(); |
6d6f0db0 | 1546 | if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; } |
c00ee156 | 1547 | |
e7dec527 | 1548 | this._rfbTightVNC = true; |
b1dee947 | 1549 | |
6d6f0db0 | 1550 | if (numTunnels > 0) { |
00674385 | 1551 | this._negotiateTightTunnels(numTunnels); |
6d6f0db0 | 1552 | return false; // wait until we receive the sub auth to continue |
b1dee947 | 1553 | } |
6d6f0db0 | 1554 | } |
b1dee947 | 1555 | |
6d6f0db0 SR |
1556 | // second pass, do the sub-auth negotiation |
1557 | if (this._sock.rQwait("sub auth count", 4)) { return false; } | |
2b5f94fa | 1558 | const subAuthCount = this._sock.rQshift32(); |
6d6f0db0 | 1559 | if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected |
e7dec527 | 1560 | this._rfbInitState = 'SecurityResult'; |
6d6f0db0 SR |
1561 | return true; |
1562 | } | |
b1dee947 | 1563 | |
6d6f0db0 | 1564 | if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; } |
b1dee947 | 1565 | |
2b5f94fa | 1566 | const clientSupportedTypes = { |
6d6f0db0 | 1567 | 'STDVNOAUTH__': 1, |
1c982614 CKB |
1568 | 'STDVVNCAUTH_': 2, |
1569 | 'TGHTULGNAUTH': 129 | |
6d6f0db0 | 1570 | }; |
b1dee947 | 1571 | |
2b5f94fa | 1572 | const serverSupportedTypes = []; |
95eb681b | 1573 | |
2b5f94fa | 1574 | for (let i = 0; i < subAuthCount; i++) { |
8727f598 | 1575 | this._sock.rQshift32(); // capNum |
2b5f94fa | 1576 | const capabilities = this._sock.rQshiftStr(12); |
6d6f0db0 SR |
1577 | serverSupportedTypes.push(capabilities); |
1578 | } | |
d86cc2d9 | 1579 | |
e6bad200 PO |
1580 | Log.Debug("Server Tight authentication types: " + serverSupportedTypes); |
1581 | ||
2b5f94fa | 1582 | for (let authType in clientSupportedTypes) { |
6d6f0db0 SR |
1583 | if (serverSupportedTypes.indexOf(authType) != -1) { |
1584 | this._sock.send([0, 0, 0, clientSupportedTypes[authType]]); | |
e6bad200 | 1585 | Log.Debug("Selected authentication type: " + authType); |
d86cc2d9 | 1586 | |
6d6f0db0 SR |
1587 | switch (authType) { |
1588 | case 'STDVNOAUTH__': // no auth | |
e7dec527 | 1589 | this._rfbInitState = 'SecurityResult'; |
6d6f0db0 SR |
1590 | return true; |
1591 | case 'STDVVNCAUTH_': // VNC auth | |
e7dec527 | 1592 | this._rfbAuthScheme = 2; |
00674385 | 1593 | return this._initMsg(); |
1c982614 | 1594 | case 'TGHTULGNAUTH': // UNIX auth |
e7dec527 | 1595 | this._rfbAuthScheme = 129; |
00674385 | 1596 | return this._initMsg(); |
6d6f0db0 | 1597 | default: |
d472f3f1 SM |
1598 | return this._fail("Unsupported tiny auth scheme " + |
1599 | "(scheme: " + authType + ")"); | |
b1dee947 SR |
1600 | } |
1601 | } | |
6d6f0db0 | 1602 | } |
b1dee947 | 1603 | |
d472f3f1 | 1604 | return this._fail("No supported sub-auth types!"); |
0e4808bf | 1605 | } |
6d6f0db0 | 1606 | |
00674385 | 1607 | _negotiateAuthentication() { |
e7dec527 | 1608 | switch (this._rfbAuthScheme) { |
6d6f0db0 | 1609 | case 1: // no auth |
e7dec527 SM |
1610 | if (this._rfbVersion >= 3.8) { |
1611 | this._rfbInitState = 'SecurityResult'; | |
6d6f0db0 SR |
1612 | return true; |
1613 | } | |
e7dec527 | 1614 | this._rfbInitState = 'ClientInitialisation'; |
00674385 | 1615 | return this._initMsg(); |
95eb681b | 1616 | |
6d6f0db0 | 1617 | case 22: // XVP auth |
00674385 | 1618 | return this._negotiateXvpAuth(); |
d86cc2d9 | 1619 | |
6d6f0db0 | 1620 | case 2: // VNC authentication |
00674385 | 1621 | return this._negotiateStdVNCAuth(); |
d86cc2d9 | 1622 | |
6d6f0db0 | 1623 | case 16: // TightVNC Security Type |
00674385 | 1624 | return this._negotiateTightAuth(); |
d86cc2d9 | 1625 | |
a1015d8d | 1626 | case 19: // VeNCrypt Security Type |
00674385 | 1627 | return this._negotiateVeNCryptAuth(); |
a1015d8d | 1628 | |
1c982614 | 1629 | case 129: // TightVNC UNIX Security Type |
00674385 | 1630 | return this._negotiateTightUnixAuth(); |
1c982614 | 1631 | |
6d6f0db0 | 1632 | default: |
d472f3f1 | 1633 | return this._fail("Unsupported auth scheme (scheme: " + |
e7dec527 | 1634 | this._rfbAuthScheme + ")"); |
6d6f0db0 | 1635 | } |
0e4808bf | 1636 | } |
6d6f0db0 | 1637 | |
00674385 | 1638 | _handleSecurityResult() { |
6d6f0db0 | 1639 | if (this._sock.rQwait('VNC auth response ', 4)) { return false; } |
d472f3f1 | 1640 | |
2b5f94fa | 1641 | const status = this._sock.rQshift32(); |
d472f3f1 SM |
1642 | |
1643 | if (status === 0) { // OK | |
e7dec527 | 1644 | this._rfbInitState = 'ClientInitialisation'; |
d472f3f1 | 1645 | Log.Debug('Authentication OK'); |
00674385 | 1646 | return this._initMsg(); |
d472f3f1 | 1647 | } else { |
e7dec527 SM |
1648 | if (this._rfbVersion >= 3.8) { |
1649 | this._rfbInitState = "SecurityReason"; | |
1650 | this._securityContext = "security result"; | |
1651 | this._securityStatus = status; | |
00674385 | 1652 | return this._initMsg(); |
d472f3f1 | 1653 | } else { |
2b5f94fa JD |
1654 | this.dispatchEvent(new CustomEvent( |
1655 | "securityfailure", | |
1656 | { detail: { status: status } })); | |
d472f3f1 SM |
1657 | |
1658 | return this._fail("Security handshake failed"); | |
1659 | } | |
6d6f0db0 | 1660 | } |
0e4808bf | 1661 | } |
6d6f0db0 | 1662 | |
00674385 | 1663 | _negotiateServerInit() { |
6d6f0db0 SR |
1664 | if (this._sock.rQwait("server initialization", 24)) { return false; } |
1665 | ||
1666 | /* Screen size */ | |
2b5f94fa JD |
1667 | const width = this._sock.rQshift16(); |
1668 | const height = this._sock.rQshift16(); | |
6d6f0db0 SR |
1669 | |
1670 | /* PIXEL_FORMAT */ | |
2b5f94fa JD |
1671 | const bpp = this._sock.rQshift8(); |
1672 | const depth = this._sock.rQshift8(); | |
e7dec527 SM |
1673 | const bigEndian = this._sock.rQshift8(); |
1674 | const trueColor = this._sock.rQshift8(); | |
1675 | ||
1676 | const redMax = this._sock.rQshift16(); | |
1677 | const greenMax = this._sock.rQshift16(); | |
1678 | const blueMax = this._sock.rQshift16(); | |
1679 | const redShift = this._sock.rQshift8(); | |
1680 | const greenShift = this._sock.rQshift8(); | |
1681 | const blueShift = this._sock.rQshift8(); | |
6d6f0db0 SR |
1682 | this._sock.rQskipBytes(3); // padding |
1683 | ||
1684 | // NB(directxman12): we don't want to call any callbacks or print messages until | |
1685 | // *after* we're past the point where we could backtrack | |
1686 | ||
1687 | /* Connection name/title */ | |
e7dec527 SM |
1688 | const nameLength = this._sock.rQshift32(); |
1689 | if (this._sock.rQwait('server init name', nameLength, 24)) { return false; } | |
1690 | let name = this._sock.rQshiftStr(nameLength); | |
2cf82a5c | 1691 | name = decodeUTF8(name, true); |
6d6f0db0 | 1692 | |
e7dec527 SM |
1693 | if (this._rfbTightVNC) { |
1694 | if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + nameLength)) { return false; } | |
6d6f0db0 | 1695 | // In TightVNC mode, ServerInit message is extended |
2b5f94fa JD |
1696 | const numServerMessages = this._sock.rQshift16(); |
1697 | const numClientMessages = this._sock.rQshift16(); | |
1698 | const numEncodings = this._sock.rQshift16(); | |
6d6f0db0 SR |
1699 | this._sock.rQskipBytes(2); // padding |
1700 | ||
2b5f94fa | 1701 | const totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16; |
e7dec527 | 1702 | if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + nameLength)) { return false; } |
6d6f0db0 SR |
1703 | |
1704 | // we don't actually do anything with the capability information that TIGHT sends, | |
1705 | // so we just skip the all of this. | |
1706 | ||
1707 | // TIGHT server message capabilities | |
1708 | this._sock.rQskipBytes(16 * numServerMessages); | |
1709 | ||
1710 | // TIGHT client message capabilities | |
1711 | this._sock.rQskipBytes(16 * numClientMessages); | |
1712 | ||
1713 | // TIGHT encoding capabilities | |
1714 | this._sock.rQskipBytes(16 * numEncodings); | |
1715 | } | |
d86cc2d9 | 1716 | |
6d6f0db0 SR |
1717 | // NB(directxman12): these are down here so that we don't run them multiple times |
1718 | // if we backtrack | |
91d5c625 | 1719 | Log.Info("Screen: " + width + "x" + height + |
6d6f0db0 | 1720 | ", bpp: " + bpp + ", depth: " + depth + |
e7dec527 SM |
1721 | ", bigEndian: " + bigEndian + |
1722 | ", trueColor: " + trueColor + | |
1723 | ", redMax: " + redMax + | |
1724 | ", greenMax: " + greenMax + | |
1725 | ", blueMax: " + blueMax + | |
1726 | ", redShift: " + redShift + | |
1727 | ", greenShift: " + greenShift + | |
1728 | ", blueShift: " + blueShift); | |
6d6f0db0 | 1729 | |
6d6f0db0 | 1730 | // we're past the point where we could backtrack, so it's safe to call this |
ce66b469 | 1731 | this._setDesktopName(name); |
91d5c625 | 1732 | this._resize(width, height); |
b1dee947 | 1733 | |
747b4623 | 1734 | if (!this._viewOnly) { this._keyboard.grab(); } |
b1dee947 | 1735 | |
e7dec527 | 1736 | this._fbDepth = 24; |
5a5f5ada | 1737 | |
e7dec527 | 1738 | if (this._fbName === "Intel(r) AMT KVM") { |
5a5f5ada | 1739 | Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode."); |
e7dec527 | 1740 | this._fbDepth = 8; |
5a5f5ada PO |
1741 | } |
1742 | ||
e7dec527 | 1743 | RFB.messages.pixelFormat(this._sock, this._fbDepth, true); |
49a81837 | 1744 | this._sendEncodings(); |
e7dec527 | 1745 | RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fbWidth, this._fbHeight); |
6d6f0db0 | 1746 | |
6d6f0db0 SR |
1747 | this._updateConnectionState('connected'); |
1748 | return true; | |
0e4808bf | 1749 | } |
6d6f0db0 | 1750 | |
0e4808bf | 1751 | _sendEncodings() { |
2b5f94fa | 1752 | const encs = []; |
49a81837 PO |
1753 | |
1754 | // In preference order | |
1755 | encs.push(encodings.encodingCopyRect); | |
5a5f5ada | 1756 | // Only supported with full depth support |
e7dec527 | 1757 | if (this._fbDepth == 24) { |
5a5f5ada | 1758 | encs.push(encodings.encodingTight); |
2c813a33 | 1759 | encs.push(encodings.encodingTightPNG); |
5a5f5ada PO |
1760 | encs.push(encodings.encodingHextile); |
1761 | encs.push(encodings.encodingRRE); | |
1762 | } | |
49a81837 PO |
1763 | encs.push(encodings.encodingRaw); |
1764 | ||
1765 | // Psuedo-encoding settings | |
efd1f8a4 | 1766 | encs.push(encodings.pseudoEncodingQualityLevel0 + this._qualityLevel); |
479d8cef | 1767 | encs.push(encodings.pseudoEncodingCompressLevel0 + this._compressionLevel); |
49a81837 PO |
1768 | |
1769 | encs.push(encodings.pseudoEncodingDesktopSize); | |
1770 | encs.push(encodings.pseudoEncodingLastRect); | |
1771 | encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent); | |
1772 | encs.push(encodings.pseudoEncodingExtendedDesktopSize); | |
1773 | encs.push(encodings.pseudoEncodingXvp); | |
1774 | encs.push(encodings.pseudoEncodingFence); | |
1775 | encs.push(encodings.pseudoEncodingContinuousUpdates); | |
ce66b469 | 1776 | encs.push(encodings.pseudoEncodingDesktopName); |
f73fdc3e | 1777 | encs.push(encodings.pseudoEncodingExtendedClipboard); |
49a81837 | 1778 | |
e7dec527 | 1779 | if (this._fbDepth == 24) { |
296ba51f | 1780 | encs.push(encodings.pseudoEncodingVMwareCursor); |
49a81837 PO |
1781 | encs.push(encodings.pseudoEncodingCursor); |
1782 | } | |
1783 | ||
1784 | RFB.messages.clientEncodings(this._sock, encs); | |
0e4808bf | 1785 | } |
49a81837 | 1786 | |
6d6f0db0 SR |
1787 | /* RFB protocol initialization states: |
1788 | * ProtocolVersion | |
1789 | * Security | |
1790 | * Authentication | |
1791 | * SecurityResult | |
1792 | * ClientInitialization - not triggered by server message | |
1793 | * ServerInitialization | |
1794 | */ | |
00674385 | 1795 | _initMsg() { |
e7dec527 | 1796 | switch (this._rfbInitState) { |
6d6f0db0 | 1797 | case 'ProtocolVersion': |
00674385 | 1798 | return this._negotiateProtocolVersion(); |
6d6f0db0 SR |
1799 | |
1800 | case 'Security': | |
00674385 | 1801 | return this._negotiateSecurity(); |
6d6f0db0 SR |
1802 | |
1803 | case 'Authentication': | |
00674385 | 1804 | return this._negotiateAuthentication(); |
6d6f0db0 SR |
1805 | |
1806 | case 'SecurityResult': | |
00674385 | 1807 | return this._handleSecurityResult(); |
6d6f0db0 | 1808 | |
3bb15d4a | 1809 | case 'SecurityReason': |
00674385 | 1810 | return this._handleSecurityReason(); |
3bb15d4a | 1811 | |
6d6f0db0 SR |
1812 | case 'ClientInitialisation': |
1813 | this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation | |
e7dec527 | 1814 | this._rfbInitState = 'ServerInitialisation'; |
6d6f0db0 | 1815 | return true; |
b1dee947 | 1816 | |
6d6f0db0 | 1817 | case 'ServerInitialisation': |
00674385 | 1818 | return this._negotiateServerInit(); |
b1dee947 | 1819 | |
6d6f0db0 | 1820 | default: |
d472f3f1 | 1821 | return this._fail("Unknown init state (state: " + |
e7dec527 | 1822 | this._rfbInitState + ")"); |
6d6f0db0 | 1823 | } |
0e4808bf | 1824 | } |
b1dee947 | 1825 | |
00674385 | 1826 | _handleSetColourMapMsg() { |
6d6f0db0 | 1827 | Log.Debug("SetColorMapEntries"); |
b1dee947 | 1828 | |
d472f3f1 | 1829 | return this._fail("Unexpected SetColorMapEntries message"); |
0e4808bf | 1830 | } |
b1dee947 | 1831 | |
00674385 | 1832 | _handleServerCutText() { |
6d6f0db0 | 1833 | Log.Debug("ServerCutText"); |
b1dee947 | 1834 | |
6d6f0db0 | 1835 | if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; } |
f73fdc3e | 1836 | |
6d6f0db0 | 1837 | this._sock.rQskipBytes(3); // Padding |
b1dee947 | 1838 | |
f73fdc3e NL |
1839 | let length = this._sock.rQshift32(); |
1840 | length = toSigned32bit(length); | |
b4ff032e | 1841 | |
f73fdc3e | 1842 | if (this._sock.rQwait("ServerCutText content", Math.abs(length), 8)) { return false; } |
b4ff032e | 1843 | |
f73fdc3e NL |
1844 | if (length >= 0) { |
1845 | //Standard msg | |
1846 | const text = this._sock.rQshiftStr(length); | |
1847 | if (this._viewOnly) { | |
1848 | return true; | |
1849 | } | |
1850 | ||
1851 | this.dispatchEvent(new CustomEvent( | |
1852 | "clipboard", | |
1853 | { detail: { text: text } })); | |
1854 | ||
1855 | } else { | |
1856 | //Extended msg. | |
1857 | length = Math.abs(length); | |
1858 | const flags = this._sock.rQshift32(); | |
1859 | let formats = flags & 0x0000FFFF; | |
1860 | let actions = flags & 0xFF000000; | |
1861 | ||
1862 | let isCaps = (!!(actions & extendedClipboardActionCaps)); | |
1863 | if (isCaps) { | |
1864 | this._clipboardServerCapabilitiesFormats = {}; | |
1865 | this._clipboardServerCapabilitiesActions = {}; | |
1866 | ||
1867 | // Update our server capabilities for Formats | |
1868 | for (let i = 0; i <= 15; i++) { | |
1869 | let index = 1 << i; | |
1870 | ||
1871 | // Check if format flag is set. | |
1872 | if ((formats & index)) { | |
1873 | this._clipboardServerCapabilitiesFormats[index] = true; | |
1874 | // We don't send unsolicited clipboard, so we | |
1875 | // ignore the size | |
1876 | this._sock.rQshift32(); | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | // Update our server capabilities for Actions | |
1881 | for (let i = 24; i <= 31; i++) { | |
1882 | let index = 1 << i; | |
1883 | this._clipboardServerCapabilitiesActions[index] = !!(actions & index); | |
1884 | } | |
1885 | ||
1886 | /* Caps handling done, send caps with the clients | |
1887 | capabilities set as a response */ | |
1888 | let clientActions = [ | |
1889 | extendedClipboardActionCaps, | |
1890 | extendedClipboardActionRequest, | |
1891 | extendedClipboardActionPeek, | |
1892 | extendedClipboardActionNotify, | |
1893 | extendedClipboardActionProvide | |
1894 | ]; | |
1895 | RFB.messages.extendedClipboardCaps(this._sock, clientActions, {extendedClipboardFormatText: 0}); | |
1896 | ||
1897 | } else if (actions === extendedClipboardActionRequest) { | |
1898 | if (this._viewOnly) { | |
1899 | return true; | |
1900 | } | |
1901 | ||
1902 | // Check if server has told us it can handle Provide and there is clipboard data to send. | |
1903 | if (this._clipboardText != null && | |
1904 | this._clipboardServerCapabilitiesActions[extendedClipboardActionProvide]) { | |
1905 | ||
1906 | if (formats & extendedClipboardFormatText) { | |
1907 | RFB.messages.extendedClipboardProvide(this._sock, [extendedClipboardFormatText], [this._clipboardText]); | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | } else if (actions === extendedClipboardActionPeek) { | |
1912 | if (this._viewOnly) { | |
1913 | return true; | |
1914 | } | |
1915 | ||
1916 | if (this._clipboardServerCapabilitiesActions[extendedClipboardActionNotify]) { | |
1917 | ||
1918 | if (this._clipboardText != null) { | |
1919 | RFB.messages.extendedClipboardNotify(this._sock, [extendedClipboardFormatText]); | |
1920 | } else { | |
1921 | RFB.messages.extendedClipboardNotify(this._sock, []); | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | } else if (actions === extendedClipboardActionNotify) { | |
1926 | if (this._viewOnly) { | |
1927 | return true; | |
1928 | } | |
1929 | ||
1930 | if (this._clipboardServerCapabilitiesActions[extendedClipboardActionRequest]) { | |
1931 | ||
1932 | if (formats & extendedClipboardFormatText) { | |
1933 | RFB.messages.extendedClipboardRequest(this._sock, [extendedClipboardFormatText]); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | } else if (actions === extendedClipboardActionProvide) { | |
1938 | if (this._viewOnly) { | |
1939 | return true; | |
1940 | } | |
1941 | ||
1942 | if (!(formats & extendedClipboardFormatText)) { | |
1943 | return true; | |
1944 | } | |
1945 | // Ignore what we had in our clipboard client side. | |
1946 | this._clipboardText = null; | |
1947 | ||
1948 | // FIXME: Should probably verify that this data was actually requested | |
1949 | let zlibStream = this._sock.rQshiftBytes(length - 4); | |
1950 | let streamInflator = new Inflator(); | |
1951 | let textData = null; | |
b1dee947 | 1952 | |
f73fdc3e NL |
1953 | streamInflator.setInput(zlibStream); |
1954 | for (let i = 0; i <= 15; i++) { | |
1955 | let format = 1 << i; | |
1956 | ||
1957 | if (formats & format) { | |
1958 | ||
1959 | let size = 0x00; | |
1960 | let sizeArray = streamInflator.inflate(4); | |
1961 | ||
1962 | size |= (sizeArray[0] << 24); | |
1963 | size |= (sizeArray[1] << 16); | |
1964 | size |= (sizeArray[2] << 8); | |
1965 | size |= (sizeArray[3]); | |
1966 | let chunk = streamInflator.inflate(size); | |
1967 | ||
1968 | if (format === extendedClipboardFormatText) { | |
1969 | textData = chunk; | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | streamInflator.setInput(null); | |
1974 | ||
1975 | if (textData !== null) { | |
ceb8ef4e AT |
1976 | let tmpText = ""; |
1977 | for (let i = 0; i < textData.length; i++) { | |
1978 | tmpText += String.fromCharCode(textData[i]); | |
1979 | } | |
1980 | textData = tmpText; | |
f73fdc3e NL |
1981 | |
1982 | textData = decodeUTF8(textData); | |
1983 | if ((textData.length > 0) && "\0" === textData.charAt(textData.length - 1)) { | |
1984 | textData = textData.slice(0, -1); | |
1985 | } | |
1986 | ||
1987 | textData = textData.replace("\r\n", "\n"); | |
1988 | ||
1989 | this.dispatchEvent(new CustomEvent( | |
1990 | "clipboard", | |
1991 | { detail: { text: textData } })); | |
1992 | } | |
1993 | } else { | |
1994 | return this._fail("Unexpected action in extended clipboard message: " + actions); | |
1995 | } | |
1996 | } | |
6d6f0db0 | 1997 | return true; |
0e4808bf | 1998 | } |
b1dee947 | 1999 | |
00674385 | 2000 | _handleServerFenceMsg() { |
6d6f0db0 SR |
2001 | if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; } |
2002 | this._sock.rQskipBytes(3); // Padding | |
2b5f94fa JD |
2003 | let flags = this._sock.rQshift32(); |
2004 | let length = this._sock.rQshift8(); | |
b1dee947 | 2005 | |
6d6f0db0 | 2006 | if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; } |
b1dee947 | 2007 | |
6d6f0db0 SR |
2008 | if (length > 64) { |
2009 | Log.Warn("Bad payload length (" + length + ") in fence response"); | |
2010 | length = 64; | |
2011 | } | |
4e0c36dd | 2012 | |
2b5f94fa | 2013 | const payload = this._sock.rQshiftStr(length); |
b1dee947 | 2014 | |
6d6f0db0 | 2015 | this._supportsFence = true; |
b1dee947 | 2016 | |
6d6f0db0 SR |
2017 | /* |
2018 | * Fence flags | |
2019 | * | |
2020 | * (1<<0) - BlockBefore | |
2021 | * (1<<1) - BlockAfter | |
2022 | * (1<<2) - SyncNext | |
2023 | * (1<<31) - Request | |
2024 | */ | |
b1dee947 | 2025 | |
6d6f0db0 | 2026 | if (!(flags & (1<<31))) { |
d472f3f1 | 2027 | return this._fail("Unexpected fence response"); |
6d6f0db0 | 2028 | } |
b1dee947 | 2029 | |
6d6f0db0 SR |
2030 | // Filter out unsupported flags |
2031 | // FIXME: support syncNext | |
2032 | flags &= (1<<0) | (1<<1); | |
b1dee947 | 2033 | |
6d6f0db0 SR |
2034 | // BlockBefore and BlockAfter are automatically handled by |
2035 | // the fact that we process each incoming message | |
2036 | // synchronuosly. | |
2037 | RFB.messages.clientFence(this._sock, flags, payload); | |
f78a652e | 2038 | |
6d6f0db0 | 2039 | return true; |
0e4808bf | 2040 | } |
b1dee947 | 2041 | |
00674385 | 2042 | _handleXvpMsg() { |
6d6f0db0 | 2043 | if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; } |
8a189a62 | 2044 | this._sock.rQskipBytes(1); // Padding |
e7dec527 SM |
2045 | const xvpVer = this._sock.rQshift8(); |
2046 | const xvpMsg = this._sock.rQshift8(); | |
b1dee947 | 2047 | |
e7dec527 | 2048 | switch (xvpMsg) { |
6d6f0db0 | 2049 | case 0: // XVP_FAIL |
5b20d338 | 2050 | Log.Error("XVP Operation Failed"); |
6d6f0db0 SR |
2051 | break; |
2052 | case 1: // XVP_INIT | |
e7dec527 SM |
2053 | this._rfbXvpVer = xvpVer; |
2054 | Log.Info("XVP extensions enabled (version " + this._rfbXvpVer + ")"); | |
832be262 | 2055 | this._setCapability("power", true); |
6d6f0db0 SR |
2056 | break; |
2057 | default: | |
e7dec527 | 2058 | this._fail("Illegal server XVP message (msg: " + xvpMsg + ")"); |
6d6f0db0 SR |
2059 | break; |
2060 | } | |
b1dee947 | 2061 | |
6d6f0db0 | 2062 | return true; |
0e4808bf | 2063 | } |
3df13262 | 2064 | |
00674385 | 2065 | _normalMsg() { |
e7dec527 | 2066 | let msgType; |
6d6f0db0 | 2067 | if (this._FBU.rects > 0) { |
e7dec527 | 2068 | msgType = 0; |
6d6f0db0 | 2069 | } else { |
e7dec527 | 2070 | msgType = this._sock.rQshift8(); |
6d6f0db0 | 2071 | } |
76a86ff5 | 2072 | |
2b5f94fa | 2073 | let first, ret; |
e7dec527 | 2074 | switch (msgType) { |
6d6f0db0 | 2075 | case 0: // FramebufferUpdate |
2b5f94fa | 2076 | ret = this._framebufferUpdate(); |
6d6f0db0 SR |
2077 | if (ret && !this._enabledContinuousUpdates) { |
2078 | RFB.messages.fbUpdateRequest(this._sock, true, 0, 0, | |
e7dec527 | 2079 | this._fbWidth, this._fbHeight); |
6d6f0db0 SR |
2080 | } |
2081 | return ret; | |
3df13262 | 2082 | |
6d6f0db0 | 2083 | case 1: // SetColorMapEntries |
00674385 | 2084 | return this._handleSetColourMapMsg(); |
6d6f0db0 SR |
2085 | |
2086 | case 2: // Bell | |
2087 | Log.Debug("Bell"); | |
2b5f94fa | 2088 | this.dispatchEvent(new CustomEvent( |
4a16dc51 | 2089 | "bell", |
2b5f94fa | 2090 | { detail: {} })); |
6d6f0db0 SR |
2091 | return true; |
2092 | ||
2093 | case 3: // ServerCutText | |
00674385 | 2094 | return this._handleServerCutText(); |
6d6f0db0 SR |
2095 | |
2096 | case 150: // EndOfContinuousUpdates | |
2b5f94fa | 2097 | first = !this._supportsContinuousUpdates; |
6d6f0db0 SR |
2098 | this._supportsContinuousUpdates = true; |
2099 | this._enabledContinuousUpdates = false; | |
2100 | if (first) { | |
2101 | this._enabledContinuousUpdates = true; | |
2102 | this._updateContinuousUpdates(); | |
2103 | Log.Info("Enabling continuous updates."); | |
2104 | } else { | |
2105 | // FIXME: We need to send a framebufferupdaterequest here | |
2106 | // if we add support for turning off continuous updates | |
2107 | } | |
2108 | return true; | |
3df13262 | 2109 | |
6d6f0db0 | 2110 | case 248: // ServerFence |
00674385 | 2111 | return this._handleServerFenceMsg(); |
3df13262 | 2112 | |
6d6f0db0 | 2113 | case 250: // XVP |
00674385 | 2114 | return this._handleXvpMsg(); |
3df13262 | 2115 | |
6d6f0db0 | 2116 | default: |
e7dec527 | 2117 | this._fail("Unexpected server message (type " + msgType + ")"); |
6d6f0db0 SR |
2118 | Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30)); |
2119 | return true; | |
2120 | } | |
0e4808bf | 2121 | } |
3df13262 | 2122 | |
0e4808bf | 2123 | _onFlush() { |
6d6f0db0 SR |
2124 | this._flushing = false; |
2125 | // Resume processing | |
8a189a62 | 2126 | if (this._sock.rQlen > 0) { |
00674385 | 2127 | this._handleMessage(); |
6d6f0db0 | 2128 | } |
0e4808bf | 2129 | } |
3df13262 | 2130 | |
0e4808bf | 2131 | _framebufferUpdate() { |
6d6f0db0 SR |
2132 | if (this._FBU.rects === 0) { |
2133 | if (this._sock.rQwait("FBU header", 3, 1)) { return false; } | |
8a189a62 | 2134 | this._sock.rQskipBytes(1); // Padding |
6d6f0db0 | 2135 | this._FBU.rects = this._sock.rQshift16(); |
b1dee947 | 2136 | |
6d6f0db0 SR |
2137 | // Make sure the previous frame is fully rendered first |
2138 | // to avoid building up an excessive queue | |
2139 | if (this._display.pending()) { | |
2140 | this._flushing = true; | |
2141 | this._display.flush(); | |
2142 | return false; | |
2143 | } | |
2144 | } | |
b1dee947 | 2145 | |
6d6f0db0 | 2146 | while (this._FBU.rects > 0) { |
923cd220 | 2147 | if (this._FBU.encoding === null) { |
6d6f0db0 SR |
2148 | if (this._sock.rQwait("rect header", 12)) { return false; } |
2149 | /* New FramebufferUpdate */ | |
b1dee947 | 2150 | |
2b5f94fa | 2151 | const hdr = this._sock.rQshiftBytes(12); |
6d6f0db0 SR |
2152 | this._FBU.x = (hdr[0] << 8) + hdr[1]; |
2153 | this._FBU.y = (hdr[2] << 8) + hdr[3]; | |
2154 | this._FBU.width = (hdr[4] << 8) + hdr[5]; | |
2155 | this._FBU.height = (hdr[6] << 8) + hdr[7]; | |
2156 | this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) + | |
2157 | (hdr[10] << 8) + hdr[11], 10); | |
6d6f0db0 | 2158 | } |
b1dee947 | 2159 | |
11309f32 PO |
2160 | if (!this._handleRect()) { |
2161 | return false; | |
6d6f0db0 | 2162 | } |
b1dee947 | 2163 | |
11309f32 | 2164 | this._FBU.rects--; |
923cd220 | 2165 | this._FBU.encoding = null; |
6d6f0db0 | 2166 | } |
76a86ff5 | 2167 | |
6d6f0db0 | 2168 | this._display.flip(); |
3df13262 | 2169 | |
6d6f0db0 | 2170 | return true; // We finished this FBU |
0e4808bf | 2171 | } |
b1dee947 | 2172 | |
11309f32 PO |
2173 | _handleRect() { |
2174 | switch (this._FBU.encoding) { | |
2175 | case encodings.pseudoEncodingLastRect: | |
2176 | this._FBU.rects = 1; // Will be decreased when we return | |
2177 | return true; | |
b1dee947 | 2178 | |
296ba51f NL |
2179 | case encodings.pseudoEncodingVMwareCursor: |
2180 | return this._handleVMwareCursor(); | |
2181 | ||
11309f32 PO |
2182 | case encodings.pseudoEncodingCursor: |
2183 | return this._handleCursor(); | |
d9ca5e5b | 2184 | |
11309f32 | 2185 | case encodings.pseudoEncodingQEMUExtendedKeyEvent: |
5b5b7474 | 2186 | this._qemuExtKeyEventSupported = true; |
11309f32 PO |
2187 | return true; |
2188 | ||
ce66b469 NL |
2189 | case encodings.pseudoEncodingDesktopName: |
2190 | return this._handleDesktopName(); | |
2191 | ||
11309f32 PO |
2192 | case encodings.pseudoEncodingDesktopSize: |
2193 | this._resize(this._FBU.width, this._FBU.height); | |
2194 | return true; | |
2195 | ||
2196 | case encodings.pseudoEncodingExtendedDesktopSize: | |
2197 | return this._handleExtendedDesktopSize(); | |
2198 | ||
2199 | default: | |
2200 | return this._handleDataRect(); | |
2201 | } | |
2202 | } | |
2203 | ||
296ba51f NL |
2204 | _handleVMwareCursor() { |
2205 | const hotx = this._FBU.x; // hotspot-x | |
2206 | const hoty = this._FBU.y; // hotspot-y | |
2207 | const w = this._FBU.width; | |
2208 | const h = this._FBU.height; | |
2209 | if (this._sock.rQwait("VMware cursor encoding", 1)) { | |
2210 | return false; | |
2211 | } | |
2212 | ||
e7dec527 | 2213 | const cursorType = this._sock.rQshift8(); |
296ba51f NL |
2214 | |
2215 | this._sock.rQshift8(); //Padding | |
2216 | ||
2217 | let rgba; | |
2218 | const bytesPerPixel = 4; | |
2219 | ||
2220 | //Classic cursor | |
e7dec527 | 2221 | if (cursorType == 0) { |
296ba51f NL |
2222 | //Used to filter away unimportant bits. |
2223 | //OR is used for correct conversion in js. | |
2224 | const PIXEL_MASK = 0xffffff00 | 0; | |
2225 | rgba = new Array(w * h * bytesPerPixel); | |
2226 | ||
2227 | if (this._sock.rQwait("VMware cursor classic encoding", | |
2228 | (w * h * bytesPerPixel) * 2, 2)) { | |
2229 | return false; | |
2230 | } | |
2231 | ||
e7dec527 | 2232 | let andMask = new Array(w * h); |
296ba51f | 2233 | for (let pixel = 0; pixel < (w * h); pixel++) { |
e7dec527 | 2234 | andMask[pixel] = this._sock.rQshift32(); |
296ba51f NL |
2235 | } |
2236 | ||
e7dec527 | 2237 | let xorMask = new Array(w * h); |
296ba51f | 2238 | for (let pixel = 0; pixel < (w * h); pixel++) { |
e7dec527 | 2239 | xorMask[pixel] = this._sock.rQshift32(); |
296ba51f NL |
2240 | } |
2241 | ||
2242 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
e7dec527 | 2243 | if (andMask[pixel] == 0) { |
296ba51f | 2244 | //Fully opaque pixel |
e7dec527 | 2245 | let bgr = xorMask[pixel]; |
296ba51f NL |
2246 | let r = bgr >> 8 & 0xff; |
2247 | let g = bgr >> 16 & 0xff; | |
2248 | let b = bgr >> 24 & 0xff; | |
2249 | ||
2250 | rgba[(pixel * bytesPerPixel) ] = r; //r | |
2251 | rgba[(pixel * bytesPerPixel) + 1 ] = g; //g | |
2252 | rgba[(pixel * bytesPerPixel) + 2 ] = b; //b | |
2253 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; //a | |
2254 | ||
e7dec527 | 2255 | } else if ((andMask[pixel] & PIXEL_MASK) == |
296ba51f NL |
2256 | PIXEL_MASK) { |
2257 | //Only screen value matters, no mouse colouring | |
e7dec527 | 2258 | if (xorMask[pixel] == 0) { |
296ba51f NL |
2259 | //Transparent pixel |
2260 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
2261 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2262 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2263 | rgba[(pixel * bytesPerPixel) + 3 ] = 0x00; | |
2264 | ||
e7dec527 | 2265 | } else if ((xorMask[pixel] & PIXEL_MASK) == |
296ba51f NL |
2266 | PIXEL_MASK) { |
2267 | //Inverted pixel, not supported in browsers. | |
2268 | //Fully opaque instead. | |
2269 | rgba[(pixel * bytesPerPixel) ] = 0x00; | |
2270 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2271 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2272 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2273 | ||
2274 | } else { | |
e7dec527 | 2275 | //Unhandled xorMask |
296ba51f NL |
2276 | rgba[(pixel * bytesPerPixel) ] = 0x00; |
2277 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2278 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2279 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2280 | } | |
2281 | ||
2282 | } else { | |
e7dec527 | 2283 | //Unhandled andMask |
296ba51f NL |
2284 | rgba[(pixel * bytesPerPixel) ] = 0x00; |
2285 | rgba[(pixel * bytesPerPixel) + 1 ] = 0x00; | |
2286 | rgba[(pixel * bytesPerPixel) + 2 ] = 0x00; | |
2287 | rgba[(pixel * bytesPerPixel) + 3 ] = 0xff; | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | //Alpha cursor. | |
e7dec527 | 2292 | } else if (cursorType == 1) { |
296ba51f NL |
2293 | if (this._sock.rQwait("VMware cursor alpha encoding", |
2294 | (w * h * 4), 2)) { | |
2295 | return false; | |
2296 | } | |
2297 | ||
2298 | rgba = new Array(w * h * bytesPerPixel); | |
2299 | ||
2300 | for (let pixel = 0; pixel < (w * h); pixel++) { | |
2301 | let data = this._sock.rQshift32(); | |
2302 | ||
71bb3fdf | 2303 | rgba[(pixel * 4) ] = data >> 24 & 0xff; //r |
296ba51f | 2304 | rgba[(pixel * 4) + 1 ] = data >> 16 & 0xff; //g |
71bb3fdf | 2305 | rgba[(pixel * 4) + 2 ] = data >> 8 & 0xff; //b |
296ba51f NL |
2306 | rgba[(pixel * 4) + 3 ] = data & 0xff; //a |
2307 | } | |
2308 | ||
2309 | } else { | |
2310 | Log.Warn("The given cursor type is not supported: " | |
e7dec527 | 2311 | + cursorType + " given."); |
296ba51f NL |
2312 | return false; |
2313 | } | |
2314 | ||
2315 | this._updateCursor(rgba, hotx, hoty, w, h); | |
2316 | ||
2317 | return true; | |
2318 | } | |
2319 | ||
11309f32 | 2320 | _handleCursor() { |
679535ec PO |
2321 | const hotx = this._FBU.x; // hotspot-x |
2322 | const hoty = this._FBU.y; // hotspot-y | |
11309f32 PO |
2323 | const w = this._FBU.width; |
2324 | const h = this._FBU.height; | |
2325 | ||
2326 | const pixelslength = w * h * 4; | |
679535ec | 2327 | const masklength = Math.ceil(w / 8) * h; |
11309f32 | 2328 | |
923cd220 PO |
2329 | let bytes = pixelslength + masklength; |
2330 | if (this._sock.rQwait("cursor encoding", bytes)) { | |
11309f32 PO |
2331 | return false; |
2332 | } | |
2333 | ||
679535ec PO |
2334 | // Decode from BGRX pixels + bit mask to RGBA |
2335 | const pixels = this._sock.rQshiftBytes(pixelslength); | |
2336 | const mask = this._sock.rQshiftBytes(masklength); | |
2337 | let rgba = new Uint8Array(w * h * 4); | |
2338 | ||
e7dec527 | 2339 | let pixIdx = 0; |
679535ec PO |
2340 | for (let y = 0; y < h; y++) { |
2341 | for (let x = 0; x < w; x++) { | |
e7dec527 SM |
2342 | let maskIdx = y * Math.ceil(w / 8) + Math.floor(x / 8); |
2343 | let alpha = (mask[maskIdx] << (x % 8)) & 0x80 ? 255 : 0; | |
2344 | rgba[pixIdx ] = pixels[pixIdx + 2]; | |
2345 | rgba[pixIdx + 1] = pixels[pixIdx + 1]; | |
2346 | rgba[pixIdx + 2] = pixels[pixIdx]; | |
2347 | rgba[pixIdx + 3] = alpha; | |
2348 | pixIdx += 4; | |
679535ec PO |
2349 | } |
2350 | } | |
2351 | ||
2352 | this._updateCursor(rgba, hotx, hoty, w, h); | |
11309f32 | 2353 | |
11309f32 PO |
2354 | return true; |
2355 | } | |
2356 | ||
ce66b469 NL |
2357 | _handleDesktopName() { |
2358 | if (this._sock.rQwait("DesktopName", 4)) { | |
2359 | return false; | |
2360 | } | |
2361 | ||
2362 | let length = this._sock.rQshift32(); | |
2363 | ||
2364 | if (this._sock.rQwait("DesktopName", length, 4)) { | |
2365 | return false; | |
2366 | } | |
2367 | ||
2368 | let name = this._sock.rQshiftStr(length); | |
2cf82a5c | 2369 | name = decodeUTF8(name, true); |
ce66b469 NL |
2370 | |
2371 | this._setDesktopName(name); | |
2372 | ||
2373 | return true; | |
2374 | } | |
2375 | ||
11309f32 | 2376 | _handleExtendedDesktopSize() { |
923cd220 | 2377 | if (this._sock.rQwait("ExtendedDesktopSize", 4)) { |
11309f32 PO |
2378 | return false; |
2379 | } | |
2380 | ||
e7dec527 | 2381 | const numberOfScreens = this._sock.rQpeek8(); |
11309f32 | 2382 | |
e7dec527 | 2383 | let bytes = 4 + (numberOfScreens * 16); |
923cd220 | 2384 | if (this._sock.rQwait("ExtendedDesktopSize", bytes)) { |
11309f32 PO |
2385 | return false; |
2386 | } | |
2387 | ||
2388 | const firstUpdate = !this._supportsSetDesktopSize; | |
2389 | this._supportsSetDesktopSize = true; | |
2390 | ||
2391 | // Normally we only apply the current resize mode after a | |
2392 | // window resize event. However there is no such trigger on the | |
2393 | // initial connect. And we don't know if the server supports | |
2394 | // resizing until we've gotten here. | |
2395 | if (firstUpdate) { | |
2396 | this._requestRemoteResize(); | |
2397 | } | |
2398 | ||
2399 | this._sock.rQskipBytes(1); // number-of-screens | |
2400 | this._sock.rQskipBytes(3); // padding | |
2401 | ||
e7dec527 | 2402 | for (let i = 0; i < numberOfScreens; i += 1) { |
11309f32 PO |
2403 | // Save the id and flags of the first screen |
2404 | if (i === 0) { | |
e7dec527 | 2405 | this._screenID = this._sock.rQshiftBytes(4); // id |
11309f32 PO |
2406 | this._sock.rQskipBytes(2); // x-position |
2407 | this._sock.rQskipBytes(2); // y-position | |
2408 | this._sock.rQskipBytes(2); // width | |
2409 | this._sock.rQskipBytes(2); // height | |
e7dec527 | 2410 | this._screenFlags = this._sock.rQshiftBytes(4); // flags |
11309f32 PO |
2411 | } else { |
2412 | this._sock.rQskipBytes(16); | |
b1dee947 | 2413 | } |
11309f32 | 2414 | } |
b1dee947 | 2415 | |
11309f32 PO |
2416 | /* |
2417 | * The x-position indicates the reason for the change: | |
2418 | * | |
2419 | * 0 - server resized on its own | |
2420 | * 1 - this client requested the resize | |
2421 | * 2 - another client requested the resize | |
2422 | */ | |
2423 | ||
2424 | // We need to handle errors when we requested the resize. | |
2425 | if (this._FBU.x === 1 && this._FBU.y !== 0) { | |
2426 | let msg = ""; | |
2427 | // The y-position indicates the status code from the server | |
2428 | switch (this._FBU.y) { | |
9881899e PO |
2429 | case 1: |
2430 | msg = "Resize is administratively prohibited"; | |
2431 | break; | |
2432 | case 2: | |
2433 | msg = "Out of resources"; | |
2434 | break; | |
2435 | case 3: | |
2436 | msg = "Invalid screen layout"; | |
2437 | break; | |
2438 | default: | |
2439 | msg = "Unknown reason"; | |
2440 | break; | |
11309f32 PO |
2441 | } |
2442 | Log.Warn("Server did not accept the resize request: " | |
2443 | + msg); | |
2444 | } else { | |
2445 | this._resize(this._FBU.width, this._FBU.height); | |
6d6f0db0 | 2446 | } |
b1dee947 | 2447 | |
11309f32 PO |
2448 | return true; |
2449 | } | |
b1dee947 | 2450 | |
11309f32 | 2451 | _handleDataRect() { |
923cd220 PO |
2452 | let decoder = this._decoders[this._FBU.encoding]; |
2453 | if (!decoder) { | |
11309f32 PO |
2454 | this._fail("Unsupported encoding (encoding: " + |
2455 | this._FBU.encoding + ")"); | |
2456 | return false; | |
2457 | } | |
2458 | ||
923cd220 PO |
2459 | try { |
2460 | return decoder.decodeRect(this._FBU.x, this._FBU.y, | |
2461 | this._FBU.width, this._FBU.height, | |
2462 | this._sock, this._display, | |
e7dec527 | 2463 | this._fbDepth); |
923cd220 PO |
2464 | } catch (err) { |
2465 | this._fail("Error decoding rect: " + err); | |
2466 | return false; | |
2467 | } | |
0e4808bf | 2468 | } |
b1dee947 | 2469 | |
0e4808bf | 2470 | _updateContinuousUpdates() { |
6d6f0db0 | 2471 | if (!this._enabledContinuousUpdates) { return; } |
b1dee947 | 2472 | |
6d6f0db0 | 2473 | RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0, |
e7dec527 | 2474 | this._fbWidth, this._fbHeight); |
0e4808bf | 2475 | } |
91d5c625 | 2476 | |
0e4808bf | 2477 | _resize(width, height) { |
e7dec527 SM |
2478 | this._fbWidth = width; |
2479 | this._fbHeight = height; | |
91d5c625 | 2480 | |
e7dec527 | 2481 | this._display.resize(this._fbWidth, this._fbHeight); |
e89eef94 | 2482 | |
9b84f516 PO |
2483 | // Adjust the visible viewport based on the new dimensions |
2484 | this._updateClip(); | |
2485 | this._updateScale(); | |
91d5c625 | 2486 | |
91d5c625 | 2487 | this._updateContinuousUpdates(); |
0e4808bf | 2488 | } |
8db09746 | 2489 | |
0e4808bf | 2490 | _xvpOp(ver, op) { |
e7dec527 | 2491 | if (this._rfbXvpVer < ver) { return; } |
cd523e8f PO |
2492 | Log.Info("Sending XVP operation " + op + " (version " + ver + ")"); |
2493 | RFB.messages.xvpOp(this._sock, ver, op); | |
0e4808bf | 2494 | } |
76a86ff5 | 2495 | |
d1314d4b AP |
2496 | _updateCursor(rgba, hotx, hoty, w, h) { |
2497 | this._cursorImage = { | |
2498 | rgbaPixels: rgba, | |
2499 | hotx: hotx, hoty: hoty, w: w, h: h, | |
2500 | }; | |
2501 | this._refreshCursor(); | |
2502 | } | |
2503 | ||
4c38179d AP |
2504 | _shouldShowDotCursor() { |
2505 | // Called when this._cursorImage is updated | |
2506 | if (!this._showDotCursor) { | |
2507 | // User does not want to see the dot, so... | |
2508 | return false; | |
2509 | } | |
2510 | ||
2511 | // The dot should not be shown if the cursor is already visible, | |
2512 | // i.e. contains at least one not-fully-transparent pixel. | |
2513 | // So iterate through all alpha bytes in rgba and stop at the | |
2514 | // first non-zero. | |
2515 | for (let i = 3; i < this._cursorImage.rgbaPixels.length; i += 4) { | |
2516 | if (this._cursorImage.rgbaPixels[i]) { | |
2517 | return false; | |
2518 | } | |
2519 | } | |
2520 | ||
2521 | // At this point, we know that the cursor is fully transparent, and | |
2522 | // the user wants to see the dot instead of this. | |
2523 | return true; | |
2524 | } | |
2525 | ||
d1314d4b | 2526 | _refreshCursor() { |
e7dec527 SM |
2527 | if (this._rfbConnectionState !== "connecting" && |
2528 | this._rfbConnectionState !== "connected") { | |
49db41ea PO |
2529 | return; |
2530 | } | |
4c38179d AP |
2531 | const image = this._shouldShowDotCursor() ? RFB.cursors.dot : this._cursorImage; |
2532 | this._cursor.change(image.rgbaPixels, | |
2533 | image.hotx, image.hoty, | |
2534 | image.w, image.h | |
d1314d4b AP |
2535 | ); |
2536 | } | |
2537 | ||
0e4808bf | 2538 | static genDES(password, challenge) { |
0505214c JD |
2539 | const passwordChars = password.split('').map(c => c.charCodeAt(0)); |
2540 | return (new DES(passwordChars)).encrypt(challenge); | |
0e4808bf JD |
2541 | } |
2542 | } | |
76a86ff5 | 2543 | |
6d6f0db0 SR |
2544 | // Class Methods |
2545 | RFB.messages = { | |
0e4808bf | 2546 | keyEvent(sock, keysym, down) { |
2b5f94fa JD |
2547 | const buff = sock._sQ; |
2548 | const offset = sock._sQlen; | |
8db09746 | 2549 | |
6d6f0db0 SR |
2550 | buff[offset] = 4; // msg-type |
2551 | buff[offset + 1] = down; | |
b1dee947 | 2552 | |
6d6f0db0 SR |
2553 | buff[offset + 2] = 0; |
2554 | buff[offset + 3] = 0; | |
fb49f91b | 2555 | |
6d6f0db0 SR |
2556 | buff[offset + 4] = (keysym >> 24); |
2557 | buff[offset + 5] = (keysym >> 16); | |
2558 | buff[offset + 6] = (keysym >> 8); | |
2559 | buff[offset + 7] = keysym; | |
b1dee947 | 2560 | |
6d6f0db0 SR |
2561 | sock._sQlen += 8; |
2562 | sock.flush(); | |
2563 | }, | |
ef1e8bab | 2564 | |
0e4808bf | 2565 | QEMUExtendedKeyEvent(sock, keysym, down, keycode) { |
e7dec527 | 2566 | function getRFBkeycode(xtScanCode) { |
2b5f94fa JD |
2567 | const upperByte = (keycode >> 8); |
2568 | const lowerByte = (keycode & 0x00ff); | |
6d6f0db0 | 2569 | if (upperByte === 0xe0 && lowerByte < 0x7f) { |
2b5f94fa | 2570 | return lowerByte | 0x80; |
ef1e8bab | 2571 | } |
e7dec527 | 2572 | return xtScanCode; |
ef1e8bab | 2573 | } |
b1dee947 | 2574 | |
2b5f94fa JD |
2575 | const buff = sock._sQ; |
2576 | const offset = sock._sQlen; | |
8f06673a | 2577 | |
6d6f0db0 SR |
2578 | buff[offset] = 255; // msg-type |
2579 | buff[offset + 1] = 0; // sub msg-type | |
8f06673a | 2580 | |
6d6f0db0 SR |
2581 | buff[offset + 2] = (down >> 8); |
2582 | buff[offset + 3] = down; | |
8f06673a | 2583 | |
6d6f0db0 SR |
2584 | buff[offset + 4] = (keysym >> 24); |
2585 | buff[offset + 5] = (keysym >> 16); | |
2586 | buff[offset + 6] = (keysym >> 8); | |
2587 | buff[offset + 7] = keysym; | |
8f06673a | 2588 | |
2b5f94fa | 2589 | const RFBkeycode = getRFBkeycode(keycode); |
8f06673a | 2590 | |
6d6f0db0 SR |
2591 | buff[offset + 8] = (RFBkeycode >> 24); |
2592 | buff[offset + 9] = (RFBkeycode >> 16); | |
2593 | buff[offset + 10] = (RFBkeycode >> 8); | |
2594 | buff[offset + 11] = RFBkeycode; | |
8f06673a | 2595 | |
6d6f0db0 SR |
2596 | sock._sQlen += 12; |
2597 | sock.flush(); | |
2598 | }, | |
8f06673a | 2599 | |
0e4808bf | 2600 | pointerEvent(sock, x, y, mask) { |
2b5f94fa JD |
2601 | const buff = sock._sQ; |
2602 | const offset = sock._sQlen; | |
8f06673a | 2603 | |
6d6f0db0 | 2604 | buff[offset] = 5; // msg-type |
9ff86fb7 | 2605 | |
6d6f0db0 | 2606 | buff[offset + 1] = mask; |
9ff86fb7 | 2607 | |
6d6f0db0 SR |
2608 | buff[offset + 2] = x >> 8; |
2609 | buff[offset + 3] = x; | |
9ff86fb7 | 2610 | |
6d6f0db0 SR |
2611 | buff[offset + 4] = y >> 8; |
2612 | buff[offset + 5] = y; | |
9ff86fb7 | 2613 | |
6d6f0db0 SR |
2614 | sock._sQlen += 6; |
2615 | sock.flush(); | |
2616 | }, | |
9ff86fb7 | 2617 | |
f73fdc3e NL |
2618 | // Used to build Notify and Request data. |
2619 | _buildExtendedClipboardFlags(actions, formats) { | |
2620 | let data = new Uint8Array(4); | |
2621 | let formatFlag = 0x00000000; | |
2622 | let actionFlag = 0x00000000; | |
2623 | ||
2624 | for (let i = 0; i < actions.length; i++) { | |
2625 | actionFlag |= actions[i]; | |
2626 | } | |
2627 | ||
2628 | for (let i = 0; i < formats.length; i++) { | |
2629 | formatFlag |= formats[i]; | |
2630 | } | |
2631 | ||
2632 | data[0] = actionFlag >> 24; // Actions | |
2633 | data[1] = 0x00; // Reserved | |
2634 | data[2] = 0x00; // Reserved | |
2635 | data[3] = formatFlag; // Formats | |
2636 | ||
2637 | return data; | |
2638 | }, | |
2639 | ||
2640 | extendedClipboardProvide(sock, formats, inData) { | |
2641 | // Deflate incomming data and their sizes | |
2642 | let deflator = new Deflator(); | |
2643 | let dataToDeflate = []; | |
2644 | ||
2645 | for (let i = 0; i < formats.length; i++) { | |
2646 | // We only support the format Text at this time | |
2647 | if (formats[i] != extendedClipboardFormatText) { | |
2648 | throw new Error("Unsupported extended clipboard format for Provide message."); | |
2649 | } | |
2650 | ||
2651 | // Change lone \r or \n into \r\n as defined in rfbproto | |
2652 | inData[i] = inData[i].replace(/\r\n|\r|\n/gm, "\r\n"); | |
2653 | ||
2654 | // Check if it already has \0 | |
2655 | let text = encodeUTF8(inData[i] + "\0"); | |
2656 | ||
2657 | dataToDeflate.push( (text.length >> 24) & 0xFF, | |
2658 | (text.length >> 16) & 0xFF, | |
2659 | (text.length >> 8) & 0xFF, | |
2660 | (text.length & 0xFF)); | |
2661 | ||
2662 | for (let j = 0; j < text.length; j++) { | |
2663 | dataToDeflate.push(text.charCodeAt(j)); | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | let deflatedData = deflator.deflate(new Uint8Array(dataToDeflate)); | |
2668 | ||
2669 | // Build data to send | |
2670 | let data = new Uint8Array(4 + deflatedData.length); | |
2671 | data.set(RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionProvide], | |
2672 | formats)); | |
2673 | data.set(deflatedData, 4); | |
2674 | ||
2675 | RFB.messages.clientCutText(sock, data, true); | |
2676 | }, | |
2677 | ||
2678 | extendedClipboardNotify(sock, formats) { | |
2679 | let flags = RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionNotify], | |
2680 | formats); | |
2681 | RFB.messages.clientCutText(sock, flags, true); | |
2682 | }, | |
2683 | ||
2684 | extendedClipboardRequest(sock, formats) { | |
2685 | let flags = RFB.messages._buildExtendedClipboardFlags([extendedClipboardActionRequest], | |
2686 | formats); | |
2687 | RFB.messages.clientCutText(sock, flags, true); | |
2688 | }, | |
2689 | ||
2690 | extendedClipboardCaps(sock, actions, formats) { | |
2691 | let formatKeys = Object.keys(formats); | |
2692 | let data = new Uint8Array(4 + (4 * formatKeys.length)); | |
2693 | ||
2694 | formatKeys.map(x => parseInt(x)); | |
2695 | formatKeys.sort((a, b) => a - b); | |
2696 | ||
2697 | data.set(RFB.messages._buildExtendedClipboardFlags(actions, [])); | |
2698 | ||
2699 | let loopOffset = 4; | |
2700 | for (let i = 0; i < formatKeys.length; i++) { | |
2701 | data[loopOffset] = formats[formatKeys[i]] >> 24; | |
2702 | data[loopOffset + 1] = formats[formatKeys[i]] >> 16; | |
2703 | data[loopOffset + 2] = formats[formatKeys[i]] >> 8; | |
2704 | data[loopOffset + 3] = formats[formatKeys[i]] >> 0; | |
2705 | ||
2706 | loopOffset += 4; | |
2707 | data[3] |= (1 << formatKeys[i]); // Update our format flags | |
2708 | } | |
2709 | ||
2710 | RFB.messages.clientCutText(sock, data, true); | |
2711 | }, | |
2712 | ||
2713 | clientCutText(sock, data, extended = false) { | |
2b5f94fa JD |
2714 | const buff = sock._sQ; |
2715 | const offset = sock._sQlen; | |
b1dee947 | 2716 | |
6d6f0db0 | 2717 | buff[offset] = 6; // msg-type |
9ff86fb7 | 2718 | |
6d6f0db0 SR |
2719 | buff[offset + 1] = 0; // padding |
2720 | buff[offset + 2] = 0; // padding | |
2721 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 2722 | |
f73fdc3e NL |
2723 | let length; |
2724 | if (extended) { | |
2725 | length = toUnsigned32bit(-data.length); | |
2726 | } else { | |
2727 | length = data.length; | |
2728 | } | |
9ff86fb7 | 2729 | |
2bb8b28d SM |
2730 | buff[offset + 4] = length >> 24; |
2731 | buff[offset + 5] = length >> 16; | |
2732 | buff[offset + 6] = length >> 8; | |
2733 | buff[offset + 7] = length; | |
9ff86fb7 | 2734 | |
2bb8b28d | 2735 | sock._sQlen += 8; |
9ff86fb7 | 2736 | |
f73fdc3e | 2737 | // We have to keep track of from where in the data we begin creating the |
2bb8b28d | 2738 | // buffer for the flush in the next iteration. |
f73fdc3e | 2739 | let dataOffset = 0; |
2bb8b28d | 2740 | |
f73fdc3e | 2741 | let remaining = data.length; |
2bb8b28d SM |
2742 | while (remaining > 0) { |
2743 | ||
0e4808bf | 2744 | let flushSize = Math.min(remaining, (sock._sQbufferSize - sock._sQlen)); |
2bb8b28d | 2745 | for (let i = 0; i < flushSize; i++) { |
f73fdc3e | 2746 | buff[sock._sQlen + i] = data[dataOffset + i]; |
2bb8b28d SM |
2747 | } |
2748 | ||
2749 | sock._sQlen += flushSize; | |
2750 | sock.flush(); | |
2751 | ||
2752 | remaining -= flushSize; | |
f73fdc3e | 2753 | dataOffset += flushSize; |
2bb8b28d | 2754 | } |
f73fdc3e | 2755 | |
6d6f0db0 SR |
2756 | }, |
2757 | ||
0e4808bf | 2758 | setDesktopSize(sock, width, height, id, flags) { |
2b5f94fa JD |
2759 | const buff = sock._sQ; |
2760 | const offset = sock._sQlen; | |
6d6f0db0 SR |
2761 | |
2762 | buff[offset] = 251; // msg-type | |
2763 | buff[offset + 1] = 0; // padding | |
2764 | buff[offset + 2] = width >> 8; // width | |
2765 | buff[offset + 3] = width; | |
2766 | buff[offset + 4] = height >> 8; // height | |
2767 | buff[offset + 5] = height; | |
2768 | ||
2769 | buff[offset + 6] = 1; // number-of-screens | |
2770 | buff[offset + 7] = 0; // padding | |
2771 | ||
2772 | // screen array | |
2773 | buff[offset + 8] = id >> 24; // id | |
2774 | buff[offset + 9] = id >> 16; | |
2775 | buff[offset + 10] = id >> 8; | |
2776 | buff[offset + 11] = id; | |
2777 | buff[offset + 12] = 0; // x-position | |
2778 | buff[offset + 13] = 0; | |
2779 | buff[offset + 14] = 0; // y-position | |
2780 | buff[offset + 15] = 0; | |
2781 | buff[offset + 16] = width >> 8; // width | |
2782 | buff[offset + 17] = width; | |
2783 | buff[offset + 18] = height >> 8; // height | |
2784 | buff[offset + 19] = height; | |
2785 | buff[offset + 20] = flags >> 24; // flags | |
2786 | buff[offset + 21] = flags >> 16; | |
2787 | buff[offset + 22] = flags >> 8; | |
2788 | buff[offset + 23] = flags; | |
2789 | ||
2790 | sock._sQlen += 24; | |
2791 | sock.flush(); | |
2792 | }, | |
2793 | ||
0e4808bf | 2794 | clientFence(sock, flags, payload) { |
2b5f94fa JD |
2795 | const buff = sock._sQ; |
2796 | const offset = sock._sQlen; | |
6d6f0db0 SR |
2797 | |
2798 | buff[offset] = 248; // msg-type | |
2799 | ||
2800 | buff[offset + 1] = 0; // padding | |
2801 | buff[offset + 2] = 0; // padding | |
2802 | buff[offset + 3] = 0; // padding | |
2803 | ||
2804 | buff[offset + 4] = flags >> 24; // flags | |
2805 | buff[offset + 5] = flags >> 16; | |
2806 | buff[offset + 6] = flags >> 8; | |
2807 | buff[offset + 7] = flags; | |
2808 | ||
2b5f94fa | 2809 | const n = payload.length; |
6d6f0db0 SR |
2810 | |
2811 | buff[offset + 8] = n; // length | |
2812 | ||
2b5f94fa | 2813 | for (let i = 0; i < n; i++) { |
6d6f0db0 SR |
2814 | buff[offset + 9 + i] = payload.charCodeAt(i); |
2815 | } | |
a7a89626 | 2816 | |
6d6f0db0 SR |
2817 | sock._sQlen += 9 + n; |
2818 | sock.flush(); | |
2819 | }, | |
3df13262 | 2820 | |
0e4808bf | 2821 | enableContinuousUpdates(sock, enable, x, y, width, height) { |
2b5f94fa JD |
2822 | const buff = sock._sQ; |
2823 | const offset = sock._sQlen; | |
3df13262 | 2824 | |
6d6f0db0 SR |
2825 | buff[offset] = 150; // msg-type |
2826 | buff[offset + 1] = enable; // enable-flag | |
76a86ff5 | 2827 | |
6d6f0db0 SR |
2828 | buff[offset + 2] = x >> 8; // x |
2829 | buff[offset + 3] = x; | |
2830 | buff[offset + 4] = y >> 8; // y | |
2831 | buff[offset + 5] = y; | |
2832 | buff[offset + 6] = width >> 8; // width | |
2833 | buff[offset + 7] = width; | |
2834 | buff[offset + 8] = height >> 8; // height | |
2835 | buff[offset + 9] = height; | |
76a86ff5 | 2836 | |
6d6f0db0 SR |
2837 | sock._sQlen += 10; |
2838 | sock.flush(); | |
2839 | }, | |
76a86ff5 | 2840 | |
e7dec527 | 2841 | pixelFormat(sock, depth, trueColor) { |
2b5f94fa JD |
2842 | const buff = sock._sQ; |
2843 | const offset = sock._sQlen; | |
ae116051 | 2844 | |
2b5f94fa | 2845 | let bpp; |
5a5f5ada PO |
2846 | |
2847 | if (depth > 16) { | |
2848 | bpp = 32; | |
2849 | } else if (depth > 8) { | |
2850 | bpp = 16; | |
2851 | } else { | |
2852 | bpp = 8; | |
2853 | } | |
2854 | ||
2b5f94fa | 2855 | const bits = Math.floor(depth/3); |
5a5f5ada | 2856 | |
6d6f0db0 | 2857 | buff[offset] = 0; // msg-type |
9ff86fb7 | 2858 | |
6d6f0db0 SR |
2859 | buff[offset + 1] = 0; // padding |
2860 | buff[offset + 2] = 0; // padding | |
2861 | buff[offset + 3] = 0; // padding | |
9ff86fb7 | 2862 | |
5a5f5ada PO |
2863 | buff[offset + 4] = bpp; // bits-per-pixel |
2864 | buff[offset + 5] = depth; // depth | |
6d6f0db0 | 2865 | buff[offset + 6] = 0; // little-endian |
e7dec527 | 2866 | buff[offset + 7] = trueColor ? 1 : 0; // true-color |
9ff86fb7 | 2867 | |
6d6f0db0 | 2868 | buff[offset + 8] = 0; // red-max |
5a5f5ada | 2869 | buff[offset + 9] = (1 << bits) - 1; // red-max |
9ff86fb7 | 2870 | |
6d6f0db0 | 2871 | buff[offset + 10] = 0; // green-max |
5a5f5ada | 2872 | buff[offset + 11] = (1 << bits) - 1; // green-max |
9ff86fb7 | 2873 | |
6d6f0db0 | 2874 | buff[offset + 12] = 0; // blue-max |
5a5f5ada | 2875 | buff[offset + 13] = (1 << bits) - 1; // blue-max |
9ff86fb7 | 2876 | |
6a19390b | 2877 | buff[offset + 14] = bits * 0; // red-shift |
5a5f5ada | 2878 | buff[offset + 15] = bits * 1; // green-shift |
6a19390b | 2879 | buff[offset + 16] = bits * 2; // blue-shift |
9ff86fb7 | 2880 | |
6d6f0db0 SR |
2881 | buff[offset + 17] = 0; // padding |
2882 | buff[offset + 18] = 0; // padding | |
2883 | buff[offset + 19] = 0; // padding | |
9ff86fb7 | 2884 | |
6d6f0db0 SR |
2885 | sock._sQlen += 20; |
2886 | sock.flush(); | |
2887 | }, | |
9ff86fb7 | 2888 | |
0e4808bf | 2889 | clientEncodings(sock, encodings) { |
2b5f94fa JD |
2890 | const buff = sock._sQ; |
2891 | const offset = sock._sQlen; | |
b1dee947 | 2892 | |
6d6f0db0 SR |
2893 | buff[offset] = 2; // msg-type |
2894 | buff[offset + 1] = 0; // padding | |
b1dee947 | 2895 | |
49a81837 PO |
2896 | buff[offset + 2] = encodings.length >> 8; |
2897 | buff[offset + 3] = encodings.length; | |
9ff86fb7 | 2898 | |
2b5f94fa JD |
2899 | let j = offset + 4; |
2900 | for (let i = 0; i < encodings.length; i++) { | |
2901 | const enc = encodings[i]; | |
49a81837 PO |
2902 | buff[j] = enc >> 24; |
2903 | buff[j + 1] = enc >> 16; | |
2904 | buff[j + 2] = enc >> 8; | |
2905 | buff[j + 3] = enc; | |
a7a89626 | 2906 | |
49a81837 PO |
2907 | j += 4; |
2908 | } | |
a7a89626 | 2909 | |
6d6f0db0 SR |
2910 | sock._sQlen += j - offset; |
2911 | sock.flush(); | |
2912 | }, | |
a679a97d | 2913 | |
0e4808bf | 2914 | fbUpdateRequest(sock, incremental, x, y, w, h) { |
2b5f94fa JD |
2915 | const buff = sock._sQ; |
2916 | const offset = sock._sQlen; | |
9ff86fb7 | 2917 | |
6d6f0db0 SR |
2918 | if (typeof(x) === "undefined") { x = 0; } |
2919 | if (typeof(y) === "undefined") { y = 0; } | |
b1dee947 | 2920 | |
6d6f0db0 SR |
2921 | buff[offset] = 3; // msg-type |
2922 | buff[offset + 1] = incremental ? 1 : 0; | |
9ff86fb7 | 2923 | |
6d6f0db0 SR |
2924 | buff[offset + 2] = (x >> 8) & 0xFF; |
2925 | buff[offset + 3] = x & 0xFF; | |
9ff86fb7 | 2926 | |
6d6f0db0 SR |
2927 | buff[offset + 4] = (y >> 8) & 0xFF; |
2928 | buff[offset + 5] = y & 0xFF; | |
9ff86fb7 | 2929 | |
6d6f0db0 SR |
2930 | buff[offset + 6] = (w >> 8) & 0xFF; |
2931 | buff[offset + 7] = w & 0xFF; | |
9ff86fb7 | 2932 | |
6d6f0db0 SR |
2933 | buff[offset + 8] = (h >> 8) & 0xFF; |
2934 | buff[offset + 9] = h & 0xFF; | |
b1dee947 | 2935 | |
6d6f0db0 SR |
2936 | sock._sQlen += 10; |
2937 | sock.flush(); | |
85b35fc0 PO |
2938 | }, |
2939 | ||
0e4808bf | 2940 | xvpOp(sock, ver, op) { |
2b5f94fa JD |
2941 | const buff = sock._sQ; |
2942 | const offset = sock._sQlen; | |
85b35fc0 PO |
2943 | |
2944 | buff[offset] = 250; // msg-type | |
2945 | buff[offset + 1] = 0; // padding | |
2946 | ||
2947 | buff[offset + 2] = ver; | |
2948 | buff[offset + 3] = op; | |
2949 | ||
2950 | sock._sQlen += 4; | |
2951 | sock.flush(); | |
6d6f0db0 | 2952 | } |
6d6f0db0 | 2953 | }; |
b1dee947 | 2954 | |
4c38179d AP |
2955 | RFB.cursors = { |
2956 | none: { | |
2957 | rgbaPixels: new Uint8Array(), | |
2958 | w: 0, h: 0, | |
2959 | hotx: 0, hoty: 0, | |
2960 | }, | |
2961 | ||
2962 | dot: { | |
9881899e | 2963 | /* eslint-disable indent */ |
4c38179d AP |
2964 | rgbaPixels: new Uint8Array([ |
2965 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2966 | 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 255, | |
2967 | 255, 255, 255, 255, 0, 0, 0, 255, 255, 255, 255, 255, | |
2968 | ]), | |
9881899e | 2969 | /* eslint-enable indent */ |
4c38179d AP |
2970 | w: 3, h: 3, |
2971 | hotx: 1, hoty: 1, | |
2972 | } | |
2973 | }; |