--- a/image/w/core/rfb.js.orig Thu May 02 11:57:07 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2554 +0,0 @@
-/*
- * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2017 Samuel Mannehed for Cendio AB
- * Licensed under MPL 2.0 (see LICENSE.txt)
- *
- * See README.md for usage and integration instructions.
- *
- * TIGHT decoder portion:
- * (c) 2012 Michael Tinglof, Joe Balaz, Les Piech (Mercuri.ca)
- */
-
-import * as Log from './util/logging.js';
-import { decodeUTF8 } from './util/strings.js';
-import { supportsCursorURIs, isTouchDevice } from './util/browser.js';
-import EventTargetMixin from './util/eventtarget.js';
-import Display from "./display.js";
-import Keyboard from "./input/keyboard.js";
-import Mouse from "./input/mouse.js";
-import Websock from "./websock.js";
-import DES from "./des.js";
-import KeyTable from "./input/keysym.js";
-import XtScancode from "./input/xtscancodes.js";
-import Inflator from "./inflator.js";
-import { encodings, encodingName } from "./encodings.js";
-import "./util/polyfill.js";
-
-/*jslint white: false, browser: true */
-/*global window, Util, Display, Keyboard, Mouse, Websock, Websock_native, Base64, DES, KeyTable, Inflator, XtScancode */
-
-// How many seconds to wait for a disconnect to finish
-var DISCONNECT_TIMEOUT = 3;
-
-export default function RFB(target, url, options) {
- if (!target) {
- throw Error("Must specify target");
- }
- if (!url) {
- throw Error("Must specify URL");
- }
-
- this._target = target;
- this._url = url;
-
- // Connection details
- options = options || {};
- this._rfb_credentials = options.credentials || {};
- this._shared = 'shared' in options ? !!options.shared : true;
- this._repeaterID = options.repeaterID || '';
-
- // Internal state
- this._rfb_connection_state = '';
- this._rfb_init_state = '';
- this._rfb_auth_scheme = '';
- this._rfb_clean_disconnect = true;
-
- // Server capabilities
- this._rfb_version = 0;
- this._rfb_max_version = 3.8;
- this._rfb_tightvnc = false;
- this._rfb_xvp_ver = 0;
-
- this._fb_width = 0;
- this._fb_height = 0;
-
- this._fb_name = "";
-
- this._capabilities = { power: false };
-
- this._supportsFence = false;
-
- this._supportsContinuousUpdates = false;
- this._enabledContinuousUpdates = false;
-
- this._supportsSetDesktopSize = false;
- this._screen_id = 0;
- this._screen_flags = 0;
-
- this._qemuExtKeyEventSupported = false;
-
- // Internal objects
- this._sock = null; // Websock object
- this._display = null; // Display object
- this._flushing = false; // Display flushing state
- this._keyboard = null; // Keyboard input handler object
- this._mouse = null; // Mouse input handler object
-
- // Timers
- this._disconnTimer = null; // disconnection timer
- this._resizeTimeout = null; // resize rate limiting
-
- // Decoder states and stats
- this._encHandlers = {};
- this._encStats = {};
-
- this._FBU = {
- rects: 0,
- subrects: 0, // RRE and HEXTILE
- lines: 0, // RAW
- tiles: 0, // HEXTILE
- bytes: 0,
- x: 0,
- y: 0,
- width: 0,
- height: 0,
- encoding: 0,
- subencoding: -1,
- background: null,
- zlibs: [] // TIGHT zlib streams
- };
- for (var i = 0; i < 4; i++) {
- this._FBU.zlibs[i] = new Inflator();
- }
-
- this._destBuff = null;
- this._paletteBuff = new Uint8Array(1024); // 256 * 4 (max palette size * max bytes-per-pixel)
-
- this._rre_chunk_sz = 100;
-
- this._timing = {
- last_fbu: 0,
- fbu_total: 0,
- fbu_total_cnt: 0,
- full_fbu_total: 0,
- full_fbu_cnt: 0,
-
- fbu_rt_start: 0,
- fbu_rt_total: 0,
- fbu_rt_cnt: 0,
- pixels: 0
- };
-
- // Mouse state
- this._mouse_buttonMask = 0;
- this._mouse_arr = [];
- this._viewportDragging = false;
- this._viewportDragPos = {};
- this._viewportHasMoved = false;
-
- // Bound event handlers
- this._eventHandlers = {
- focusCanvas: this._focusCanvas.bind(this),
- windowResize: this._windowResize.bind(this),
- };
-
- // main setup
- Log.Debug(">> RFB.constructor");
-
- // Create DOM elements
- this._screen = document.createElement('div');
- this._screen.style.display = 'flex';
- this._screen.style.width = '100%';
- this._screen.style.height = '100%';
- this._screen.style.overflow = 'auto';
- this._screen.style.backgroundColor = 'rgb(40, 40, 40)';
- this._canvas = document.createElement('canvas');
- this._canvas.style.margin = 'auto';
- // Some browsers add an outline on focus
- this._canvas.style.outline = 'none';
- // IE miscalculates width without this :(
- this._canvas.style.flexShrink = '0';
- this._canvas.width = 0;
- this._canvas.height = 0;
- this._canvas.tabIndex = -1;
- this._screen.appendChild(this._canvas);
-
- // populate encHandlers with bound versions
- this._encHandlers[encodings.encodingRaw] = RFB.encodingHandlers.RAW.bind(this);
- this._encHandlers[encodings.encodingCopyRect] = RFB.encodingHandlers.COPYRECT.bind(this);
- this._encHandlers[encodings.encodingRRE] = RFB.encodingHandlers.RRE.bind(this);
- this._encHandlers[encodings.encodingHextile] = RFB.encodingHandlers.HEXTILE.bind(this);
- this._encHandlers[encodings.encodingTight] = RFB.encodingHandlers.TIGHT.bind(this);
-
- this._encHandlers[encodings.pseudoEncodingDesktopSize] = RFB.encodingHandlers.DesktopSize.bind(this);
- this._encHandlers[encodings.pseudoEncodingLastRect] = RFB.encodingHandlers.last_rect.bind(this);
- this._encHandlers[encodings.pseudoEncodingCursor] = RFB.encodingHandlers.Cursor.bind(this);
- this._encHandlers[encodings.pseudoEncodingQEMUExtendedKeyEvent] = RFB.encodingHandlers.QEMUExtendedKeyEvent.bind(this);
- this._encHandlers[encodings.pseudoEncodingExtendedDesktopSize] = RFB.encodingHandlers.ExtendedDesktopSize.bind(this);
-
- // NB: nothing that needs explicit teardown should be done
- // before this point, since this can throw an exception
- try {
- this._display = new Display(this._canvas);
- } catch (exc) {
- Log.Error("Display exception: " + exc);
- throw exc;
- }
- this._display.onflush = this._onFlush.bind(this);
- this._display.clear();
-
- this._keyboard = new Keyboard(this._canvas);
- this._keyboard.onkeyevent = this._handleKeyEvent.bind(this);
-
- this._mouse = new Mouse(this._canvas);
- this._mouse.onmousebutton = this._handleMouseButton.bind(this);
- this._mouse.onmousemove = this._handleMouseMove.bind(this);
-
- this._sock = new Websock();
- this._sock.on('message', this._handle_message.bind(this));
- this._sock.on('open', function () {
- if ((this._rfb_connection_state === 'connecting') &&
- (this._rfb_init_state === '')) {
- this._rfb_init_state = 'ProtocolVersion';
- Log.Debug("Starting VNC handshake");
- } else {
- this._fail("Unexpected server connection while " +
- this._rfb_connection_state);
- }
- }.bind(this));
- this._sock.on('close', function (e) {
- Log.Debug("WebSocket on-close event");
- var msg = "";
- if (e.code) {
- msg = "(code: " + e.code;
- if (e.reason) {
- msg += ", reason: " + e.reason;
- }
- msg += ")";
- }
- switch (this._rfb_connection_state) {
- case 'connecting':
- this._fail("Connection closed " + msg);
- break;
- case 'connected':
- // Handle disconnects that were initiated server-side
- this._updateConnectionState('disconnecting');
- this._updateConnectionState('disconnected');
- break;
- case 'disconnecting':
- // Normal disconnection path
- this._updateConnectionState('disconnected');
- break;
- case 'disconnected':
- this._fail("Unexpected server disconnect " +
- "when already disconnected " + msg);
- break;
- default:
- this._fail("Unexpected server disconnect before connecting " +
- msg);
- break;
- }
- this._sock.off('close');
- }.bind(this));
- this._sock.on('error', function (e) {
- Log.Warn("WebSocket on-error event");
- });
-
- // Slight delay of the actual connection so that the caller has
- // time to set up callbacks
- setTimeout(this._updateConnectionState.bind(this, 'connecting'));
-
- Log.Debug("<< RFB.constructor");
-};
-
-RFB.prototype = {
- // ===== PROPERTIES =====
-
- dragViewport: false,
- focusOnClick: true,
-
- _viewOnly: false,
- get viewOnly() { return this._viewOnly; },
- set viewOnly(viewOnly) {
- this._viewOnly = viewOnly;
-
- if (this._rfb_connection_state === "connecting" ||
- this._rfb_connection_state === "connected") {
- if (viewOnly) {
- this._keyboard.ungrab();
- this._mouse.ungrab();
- } else {
- this._keyboard.grab();
- this._mouse.grab();
- }
- }
- },
-
- get capabilities() { return this._capabilities; },
-
- get touchButton() { return this._mouse.touchButton; },
- set touchButton(button) { this._mouse.touchButton = button; },
-
- _clipViewport: false,
- get clipViewport() { return this._clipViewport; },
- set clipViewport(viewport) {
- this._clipViewport = viewport;
- this._updateClip();
- },
-
- _scaleViewport: false,
- get scaleViewport() { return this._scaleViewport; },
- set scaleViewport(scale) {
- this._scaleViewport = scale;
- // Scaling trumps clipping, so we may need to adjust
- // clipping when enabling or disabling scaling
- if (scale && this._clipViewport) {
- this._updateClip();
- }
- this._updateScale();
- if (!scale && this._clipViewport) {
- this._updateClip();
- }
- },
-
- _resizeSession: false,
- get resizeSession() { return this._resizeSession; },
- set resizeSession(resize) {
- this._resizeSession = resize;
- if (resize) {
- this._requestRemoteResize();
- }
- },
-
- // ===== PUBLIC METHODS =====
-
- disconnect: function () {
- this._updateConnectionState('disconnecting');
- this._sock.off('error');
- this._sock.off('message');
- this._sock.off('open');
- },
-
- sendCredentials: function (creds) {
- this._rfb_credentials = creds;
- setTimeout(this._init_msg.bind(this), 0);
- },
-
- sendCtrlAltDel: function () {
- if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; }
- Log.Info("Sending Ctrl-Alt-Del");
-
- this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true);
- this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true);
- this.sendKey(KeyTable.XK_Delete, "Delete", true);
- this.sendKey(KeyTable.XK_Delete, "Delete", false);
- this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false);
- this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false);
- },
-
- machineShutdown: function () {
- this._xvpOp(1, 2);
- },
-
- machineReboot: function () {
- this._xvpOp(1, 3);
- },
-
- machineReset: function () {
- this._xvpOp(1, 4);
- },
-
- // Send a key press. If 'down' is not specified then send a down key
- // followed by an up key.
- sendKey: function (keysym, code, down) {
- if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; }
-
- if (down === undefined) {
- this.sendKey(keysym, code, true);
- this.sendKey(keysym, code, false);
- return;
- }
-
- var scancode = XtScancode[code];
-
- if (this._qemuExtKeyEventSupported && scancode) {
- // 0 is NoSymbol
- keysym = keysym || 0;
-
- Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode);
-
- RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode);
- } else {
- if (!keysym) {
- return;
- }
- Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym);
- RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0);
- }
- },
-
- focus: function () {
- this._canvas.focus();
- },
-
- blur: function () {
- this._canvas.blur();
- },
-
- clipboardPasteFrom: function (text) {
- if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; }
- RFB.messages.clientCutText(this._sock, text);
- },
-
- // ===== PRIVATE METHODS =====
-
- _connect: function () {
- Log.Debug(">> RFB.connect");
-
- Log.Info("connecting to " + this._url);
-
- try {
- // WebSocket.onopen transitions to the RFB init states
- this._sock.open(this._url, ['binary']);
- } catch (e) {
- if (e.name === 'SyntaxError') {
- this._fail("Invalid host or port (" + e + ")");
- } else {
- this._fail("Error when opening socket (" + e + ")");
- }
- }
-
- // Make our elements part of the page
- this._target.appendChild(this._screen);
-
- // Monitor size changes of the screen
- // FIXME: Use ResizeObserver, or hidden overflow
- window.addEventListener('resize', this._eventHandlers.windowResize);
-
- // Always grab focus on some kind of click event
- this._canvas.addEventListener("mousedown", this._eventHandlers.focusCanvas);
- this._canvas.addEventListener("touchstart", this._eventHandlers.focusCanvas);
-
- Log.Debug("<< RFB.connect");
- },
-
- _disconnect: function () {
- Log.Debug(">> RFB.disconnect");
- this._canvas.removeEventListener("mousedown", this._eventHandlers.focusCanvas);
- this._canvas.removeEventListener("touchstart", this._eventHandlers.focusCanvas);
- window.removeEventListener('resize', this._eventHandlers.windowResize);
- this._keyboard.ungrab();
- this._mouse.ungrab();
- this._sock.close();
- this._print_stats();
- try {
- this._target.removeChild(this._screen);
- } catch (e) {
- if (e.name === 'NotFoundError') {
- // Some cases where the initial connection fails
- // can disconnect before the _screen is created
- } else {
- throw e;
- }
- }
- clearTimeout(this._resizeTimeout);
- Log.Debug("<< RFB.disconnect");
- },
-
- _print_stats: function () {
- var stats = this._encStats;
-
- Log.Info("Encoding stats for this connection:");
- Object.keys(stats).forEach(function (key) {
- var s = stats[key];
- if (s[0] + s[1] > 0) {
- Log.Info(" " + encodingName(key) + ": " + s[0] + " rects");
- }
- });
-
- Log.Info("Encoding stats since page load:");
- Object.keys(stats).forEach(function (key) {
- var s = stats[key];
- Log.Info(" " + encodingName(key) + ": " + s[1] + " rects");
- });
- },
-
- _focusCanvas: function(event) {
- // Respect earlier handlers' request to not do side-effects
- if (event.defaultPrevented) {
- return;
- }
-
- if (!this.focusOnClick) {
- return;
- }
-
- this.focus();
- },
-
- _windowResize: function (event) {
- // If the window resized then our screen element might have
- // as well. Update the viewport dimensions.
- window.requestAnimationFrame(function () {
- this._updateClip();
- this._updateScale();
- }.bind(this));
-
- if (this._resizeSession) {
- // Request changing the resolution of the remote display to
- // the size of the local browser viewport.
-
- // In order to not send multiple requests before the browser-resize
- // is finished we wait 0.5 seconds before sending the request.
- clearTimeout(this._resizeTimeout);
- this._resizeTimeout = setTimeout(this._requestRemoteResize.bind(this), 500);
- }
- },
-
- // Update state of clipping in Display object, and make sure the
- // configured viewport matches the current screen size
- _updateClip: function () {
- var cur_clip = this._display.clipViewport;
- var new_clip = this._clipViewport;
-
- if (this._scaleViewport) {
- // Disable viewport clipping if we are scaling
- new_clip = false;
- }
-
- if (cur_clip !== new_clip) {
- this._display.clipViewport = new_clip;
- }
-
- if (new_clip) {
- // When clipping is enabled, the screen is limited to
- // the size of the container.
- let size = this._screenSize();
- this._display.viewportChangeSize(size.w, size.h);
- this._fixScrollbars();
- }
- },
-
- _updateScale: function () {
- if (!this._scaleViewport) {
- this._display.scale = 1.0;
- } else {
- let size = this._screenSize();
- this._display.autoscale(size.w, size.h);
- }
- this._fixScrollbars();
- },
-
- // Requests a change of remote desktop size. This message is an extension
- // and may only be sent if we have received an ExtendedDesktopSize message
- _requestRemoteResize: function () {
- clearTimeout(this._resizeTimeout);
- this._resizeTimeout = null;
-
- if (!this._resizeSession || this._viewOnly ||
- !this._supportsSetDesktopSize) {
- return;
- }
-
- let size = this._screenSize();
- RFB.messages.setDesktopSize(this._sock, size.w, size.h,
- this._screen_id, this._screen_flags);
-
- Log.Debug('Requested new desktop size: ' +
- size.w + 'x' + size.h);
- },
-
- // Gets the the size of the available screen
- _screenSize: function () {
- return { w: this._screen.offsetWidth,
- h: this._screen.offsetHeight };
- },
-
- _fixScrollbars: function () {
- // This is a hack because Chrome screws up the calculation
- // for when scrollbars are needed. So to fix it we temporarily
- // toggle them off and on.
- var orig = this._screen.style.overflow;
- this._screen.style.overflow = 'hidden';
- // Force Chrome to recalculate the layout by asking for
- // an element's dimensions
- this._screen.getBoundingClientRect();
- this._screen.style.overflow = orig;
- },
-
- /*
- * Connection states:
- * connecting
- * connected
- * disconnecting
- * disconnected - permanent state
- */
- _updateConnectionState: function (state) {
- var oldstate = this._rfb_connection_state;
-
- if (state === oldstate) {
- Log.Debug("Already in state '" + state + "', ignoring");
- return;
- }
-
- // The 'disconnected' state is permanent for each RFB object
- if (oldstate === 'disconnected') {
- Log.Error("Tried changing state of a disconnected RFB object");
- return;
- }
-
- // Ensure proper transitions before doing anything
- switch (state) {
- case 'connected':
- if (oldstate !== 'connecting') {
- Log.Error("Bad transition to connected state, " +
- "previous connection state: " + oldstate);
- return;
- }
- break;
-
- case 'disconnected':
- if (oldstate !== 'disconnecting') {
- Log.Error("Bad transition to disconnected state, " +
- "previous connection state: " + oldstate);
- return;
- }
- break;
-
- case 'connecting':
- if (oldstate !== '') {
- Log.Error("Bad transition to connecting state, " +
- "previous connection state: " + oldstate);
- return;
- }
- break;
-
- case 'disconnecting':
- if (oldstate !== 'connected' && oldstate !== 'connecting') {
- Log.Error("Bad transition to disconnecting state, " +
- "previous connection state: " + oldstate);
- return;
- }
- break;
-
- default:
- Log.Error("Unknown connection state: " + state);
- return;
- }
-
- // State change actions
-
- this._rfb_connection_state = state;
-
- var smsg = "New state '" + state + "', was '" + oldstate + "'.";
- Log.Debug(smsg);
-
- if (this._disconnTimer && state !== 'disconnecting') {
- Log.Debug("Clearing disconnect timer");
- clearTimeout(this._disconnTimer);
- this._disconnTimer = null;
-
- // make sure we don't get a double event
- this._sock.off('close');
- }
-
- switch (state) {
- case 'connecting':
- this._connect();
- break;
-
- case 'connected':
- var event = new CustomEvent("connect", { detail: {} });
- this.dispatchEvent(event);
- break;
-
- case 'disconnecting':
- this._disconnect();
-
- this._disconnTimer = setTimeout(function () {
- Log.Error("Disconnection timed out.");
- this._updateConnectionState('disconnected');
- }.bind(this), DISCONNECT_TIMEOUT * 1000);
- break;
-
- case 'disconnected':
- event = new CustomEvent(
- "disconnect", { detail:
- { clean: this._rfb_clean_disconnect } });
- this.dispatchEvent(event);
- break;
- }
- },
-
- /* Print errors and disconnect
- *
- * The parameter 'details' is used for information that
- * should be logged but not sent to the user interface.
- */
- _fail: function (details) {
- switch (this._rfb_connection_state) {
- case 'disconnecting':
- Log.Error("Failed when disconnecting: " + details);
- break;
- case 'connected':
- Log.Error("Failed while connected: " + details);
- break;
- case 'connecting':
- Log.Error("Failed when connecting: " + details);
- break;
- default:
- Log.Error("RFB failure: " + details);
- break;
- }
- this._rfb_clean_disconnect = false; //This is sent to the UI
-
- // Transition to disconnected without waiting for socket to close
- this._updateConnectionState('disconnecting');
- this._updateConnectionState('disconnected');
-
- return false;
- },
-
- _setCapability: function (cap, val) {
- this._capabilities[cap] = val;
- var event = new CustomEvent("capabilities",
- { detail: { capabilities: this._capabilities } });
- this.dispatchEvent(event);
- },
-
- _handle_message: function () {
- if (this._sock.rQlen() === 0) {
- Log.Warn("handle_message called on an empty receive queue");
- return;
- }
-
- switch (this._rfb_connection_state) {
- case 'disconnected':
- Log.Error("Got data while disconnected");
- break;
- case 'connected':
- while (true) {
- if (this._flushing) {
- break;
- }
- if (!this._normal_msg()) {
- break;
- }
- if (this._sock.rQlen() === 0) {
- break;
- }
- }
- break;
- default:
- this._init_msg();
- break;
- }
- },
-
- _handleKeyEvent: function (keysym, code, down) {
- this.sendKey(keysym, code, down);
- },
-
- _handleMouseButton: function (x, y, down, bmask) {
- if (down) {
- this._mouse_buttonMask |= bmask;
- } else {
- this._mouse_buttonMask &= ~bmask;
- }
-
- if (this.dragViewport) {
- if (down && !this._viewportDragging) {
- this._viewportDragging = true;
- this._viewportDragPos = {'x': x, 'y': y};
- this._viewportHasMoved = false;
-
- // Skip sending mouse events
- return;
- } else {
- this._viewportDragging = false;
-
- // If we actually performed a drag then we are done
- // here and should not send any mouse events
- if (this._viewportHasMoved) {
- return;
- }
-
- // Otherwise we treat this as a mouse click event.
- // Send the button down event here, as the button up
- // event is sent at the end of this function.
- RFB.messages.pointerEvent(this._sock,
- this._display.absX(x),
- this._display.absY(y),
- bmask);
- }
- }
-
- if (this._viewOnly) { return; } // View only, skip mouse events
-
- if (this._rfb_connection_state !== 'connected') { return; }
- RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask);
- },
-
- _handleMouseMove: function (x, y) {
- if (this._viewportDragging) {
- var deltaX = this._viewportDragPos.x - x;
- var deltaY = this._viewportDragPos.y - y;
-
- // The goal is to trigger on a certain physical width, the
- // devicePixelRatio brings us a bit closer but is not optimal.
- var dragThreshold = 10 * (window.devicePixelRatio || 1);
-
- if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold ||
- Math.abs(deltaY) > dragThreshold)) {
- this._viewportHasMoved = true;
-
- this._viewportDragPos = {'x': x, 'y': y};
- this._display.viewportChangePos(deltaX, deltaY);
- }
-
- // Skip sending mouse events
- return;
- }
-
- if (this._viewOnly) { return; } // View only, skip mouse events
-
- if (this._rfb_connection_state !== 'connected') { return; }
- RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask);
- },
-
- // Message Handlers
-
- _negotiate_protocol_version: function () {
- if (this._sock.rQlen() < 12) {
- return this._fail("Received incomplete protocol version.");
- }
-
- var sversion = this._sock.rQshiftStr(12).substr(4, 7);
- Log.Info("Server ProtocolVersion: " + sversion);
- var is_repeater = 0;
- switch (sversion) {
- case "000.000": // UltraVNC repeater
- is_repeater = 1;
- break;
- case "003.003":
- case "003.006": // UltraVNC
- case "003.889": // Apple Remote Desktop
- this._rfb_version = 3.3;
- break;
- case "003.007":
- this._rfb_version = 3.7;
- break;
- case "003.008":
- case "004.000": // Intel AMT KVM
- case "004.001": // RealVNC 4.6
- case "005.000": // RealVNC 5.3
- this._rfb_version = 3.8;
- break;
- default:
- return this._fail("Invalid server version " + sversion);
- }
-
- if (is_repeater) {
- var repeaterID = "ID:" + this._repeaterID;
- while (repeaterID.length < 250) {
- repeaterID += "\0";
- }
- this._sock.send_string(repeaterID);
- return true;
- }
-
- if (this._rfb_version > this._rfb_max_version) {
- this._rfb_version = this._rfb_max_version;
- }
-
- var cversion = "00" + parseInt(this._rfb_version, 10) +
- ".00" + ((this._rfb_version * 10) % 10);
- this._sock.send_string("RFB " + cversion + "\n");
- Log.Debug('Sent ProtocolVersion: ' + cversion);
-
- this._rfb_init_state = 'Security';
- },
-
- _negotiate_security: function () {
- // Polyfill since IE and PhantomJS doesn't have
- // TypedArray.includes()
- function includes(item, array) {
- for (var i = 0; i < array.length; i++) {
- if (array[i] === item) {
- return true;
- }
- }
- return false;
- }
-
- if (this._rfb_version >= 3.7) {
- // Server sends supported list, client decides
- var num_types = this._sock.rQshift8();
- if (this._sock.rQwait("security type", num_types, 1)) { return false; }
-
- if (num_types === 0) {
- return this._handle_security_failure("no security types");
- }
-
- var types = this._sock.rQshiftBytes(num_types);
- Log.Debug("Server security types: " + types);
-
- // Look for each auth in preferred order
- this._rfb_auth_scheme = 0;
- if (includes(1, types)) {
- this._rfb_auth_scheme = 1; // None
- } else if (includes(22, types)) {
- this._rfb_auth_scheme = 22; // XVP
- } else if (includes(16, types)) {
- this._rfb_auth_scheme = 16; // Tight
- } else if (includes(2, types)) {
- this._rfb_auth_scheme = 2; // VNC Auth
- } else {
- return this._fail("Unsupported security types (types: " + types + ")");
- }
-
- this._sock.send([this._rfb_auth_scheme]);
- } else {
- // Server decides
- if (this._sock.rQwait("security scheme", 4)) { return false; }
- this._rfb_auth_scheme = this._sock.rQshift32();
- }
-
- this._rfb_init_state = 'Authentication';
- Log.Debug('Authenticating using scheme: ' + this._rfb_auth_scheme);
-
- return this._init_msg(); // jump to authentication
- },
-
- /*
- * Get the security failure reason if sent from the server and
- * send the 'securityfailure' event.
- *
- * - The optional parameter context can be used to add some extra
- * context to the log output.
- *
- * - The optional parameter security_result_status can be used to
- * add a custom status code to the event.
- */
- _handle_security_failure: function (context, security_result_status) {
-
- if (typeof context === 'undefined') {
- context = "";
- } else {
- context = " on " + context;
- }
-
- if (typeof security_result_status === 'undefined') {
- security_result_status = 1; // fail
- }
-
- if (this._sock.rQwait("reason length", 4)) {
- return false;
- }
- let strlen = this._sock.rQshift32();
- let reason = "";
-
- if (strlen > 0) {
- if (this._sock.rQwait("reason", strlen, 8)) { return false; }
- reason = this._sock.rQshiftStr(strlen);
- }
-
- if (reason !== "") {
-
- let event = new CustomEvent(
- "securityfailure",
- { detail: { status: security_result_status, reason: reason } });
- this.dispatchEvent(event);
-
- return this._fail("Security negotiation failed" + context +
- " (reason: " + reason + ")");
- } else {
-
- let event = new CustomEvent(
- "securityfailure",
- { detail: { status: security_result_status } });
- this.dispatchEvent(event);
-
- return this._fail("Security negotiation failed" + context);
- }
- },
-
- // authentication
- _negotiate_xvp_auth: function () {
- if (!this._rfb_credentials.username ||
- !this._rfb_credentials.password ||
- !this._rfb_credentials.target) {
- var event = new CustomEvent("credentialsrequired",
- { detail: { types: ["username", "password", "target"] } });
- this.dispatchEvent(event);
- return false;
- }
-
- var xvp_auth_str = String.fromCharCode(this._rfb_credentials.username.length) +
- String.fromCharCode(this._rfb_credentials.target.length) +
- this._rfb_credentials.username +
- this._rfb_credentials.target;
- this._sock.send_string(xvp_auth_str);
- this._rfb_auth_scheme = 2;
- return this._negotiate_authentication();
- },
-
- _negotiate_std_vnc_auth: function () {
- if (this._sock.rQwait("auth challenge", 16)) { return false; }
-
- if (!this._rfb_credentials.password) {
- var event = new CustomEvent("credentialsrequired",
- { detail: { types: ["password"] } });
- this.dispatchEvent(event);
- return false;
- }
-
- // TODO(directxman12): make genDES not require an Array
- var challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16));
- var response = RFB.genDES(this._rfb_credentials.password, challenge);
- this._sock.send(response);
- this._rfb_init_state = "SecurityResult";
- return true;
- },
-
- _negotiate_tight_tunnels: function (numTunnels) {
- var clientSupportedTunnelTypes = {
- 0: { vendor: 'TGHT', signature: 'NOTUNNEL' }
- };
- var serverSupportedTunnelTypes = {};
- // receive tunnel capabilities
- for (var i = 0; i < numTunnels; i++) {
- var cap_code = this._sock.rQshift32();
- var cap_vendor = this._sock.rQshiftStr(4);
- var cap_signature = this._sock.rQshiftStr(8);
- serverSupportedTunnelTypes[cap_code] = { vendor: cap_vendor, signature: cap_signature };
- }
-
- // choose the notunnel type
- if (serverSupportedTunnelTypes[0]) {
- if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor ||
- serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) {
- return this._fail("Client's tunnel type had the incorrect " +
- "vendor or signature");
- }
- this._sock.send([0, 0, 0, 0]); // use NOTUNNEL
- return false; // wait until we receive the sub auth count to continue
- } else {
- return this._fail("Server wanted tunnels, but doesn't support " +
- "the notunnel type");
- }
- },
-
- _negotiate_tight_auth: function () {
- if (!this._rfb_tightvnc) { // first pass, do the tunnel negotiation
- if (this._sock.rQwait("num tunnels", 4)) { return false; }
- var numTunnels = this._sock.rQshift32();
- if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; }
-
- this._rfb_tightvnc = true;
-
- if (numTunnels > 0) {
- this._negotiate_tight_tunnels(numTunnels);
- return false; // wait until we receive the sub auth to continue
- }
- }
-
- // second pass, do the sub-auth negotiation
- if (this._sock.rQwait("sub auth count", 4)) { return false; }
- var subAuthCount = this._sock.rQshift32();
- if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected
- this._rfb_init_state = 'SecurityResult';
- return true;
- }
-
- if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; }
-
- var clientSupportedTypes = {
- 'STDVNOAUTH__': 1,
- 'STDVVNCAUTH_': 2
- };
-
- var serverSupportedTypes = [];
-
- for (var i = 0; i < subAuthCount; i++) {
- var capNum = this._sock.rQshift32();
- var capabilities = this._sock.rQshiftStr(12);
- serverSupportedTypes.push(capabilities);
- }
-
- for (var authType in clientSupportedTypes) {
- if (serverSupportedTypes.indexOf(authType) != -1) {
- this._sock.send([0, 0, 0, clientSupportedTypes[authType]]);
-
- switch (authType) {
- case 'STDVNOAUTH__': // no auth
- this._rfb_init_state = 'SecurityResult';
- return true;
- case 'STDVVNCAUTH_': // VNC auth
- this._rfb_auth_scheme = 2;
- return this._init_msg();
- default:
- return this._fail("Unsupported tiny auth scheme " +
- "(scheme: " + authType + ")");
- }
- }
- }
-
- return this._fail("No supported sub-auth types!");
- },
-
- _negotiate_authentication: function () {
- switch (this._rfb_auth_scheme) {
- case 0: // connection failed
- return this._handle_security_failure("authentication scheme");
-
- case 1: // no auth
- if (this._rfb_version >= 3.8) {
- this._rfb_init_state = 'SecurityResult';
- return true;
- }
- this._rfb_init_state = 'ClientInitialisation';
- return this._init_msg();
-
- case 22: // XVP auth
- return this._negotiate_xvp_auth();
-
- case 2: // VNC authentication
- return this._negotiate_std_vnc_auth();
-
- case 16: // TightVNC Security Type
- return this._negotiate_tight_auth();
-
- default:
- return this._fail("Unsupported auth scheme (scheme: " +
- this._rfb_auth_scheme + ")");
- }
- },
-
- _handle_security_result: function () {
- if (this._sock.rQwait('VNC auth response ', 4)) { return false; }
-
- let status = this._sock.rQshift32();
-
- if (status === 0) { // OK
- this._rfb_init_state = 'ClientInitialisation';
- Log.Debug('Authentication OK');
- return this._init_msg();
- } else {
- if (this._rfb_version >= 3.8) {
- return this._handle_security_failure("security result", status);
- } else {
- let event = new CustomEvent("securityfailure",
- { detail: { status: status } });
- this.dispatchEvent(event);
-
- return this._fail("Security handshake failed");
- }
- }
- },
-
- _negotiate_server_init: function () {
- if (this._sock.rQwait("server initialization", 24)) { return false; }
-
- /* Screen size */
- var width = this._sock.rQshift16();
- var height = this._sock.rQshift16();
-
- /* PIXEL_FORMAT */
- var bpp = this._sock.rQshift8();
- var depth = this._sock.rQshift8();
- var big_endian = this._sock.rQshift8();
- var true_color = this._sock.rQshift8();
-
- var red_max = this._sock.rQshift16();
- var green_max = this._sock.rQshift16();
- var blue_max = this._sock.rQshift16();
- var red_shift = this._sock.rQshift8();
- var green_shift = this._sock.rQshift8();
- var blue_shift = this._sock.rQshift8();
- this._sock.rQskipBytes(3); // padding
-
- // NB(directxman12): we don't want to call any callbacks or print messages until
- // *after* we're past the point where we could backtrack
-
- /* Connection name/title */
- var name_length = this._sock.rQshift32();
- if (this._sock.rQwait('server init name', name_length, 24)) { return false; }
- this._fb_name = decodeUTF8(this._sock.rQshiftStr(name_length));
-
- if (this._rfb_tightvnc) {
- if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; }
- // In TightVNC mode, ServerInit message is extended
- var numServerMessages = this._sock.rQshift16();
- var numClientMessages = this._sock.rQshift16();
- var numEncodings = this._sock.rQshift16();
- this._sock.rQskipBytes(2); // padding
-
- var totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16;
- if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + name_length)) { return false; }
-
- // we don't actually do anything with the capability information that TIGHT sends,
- // so we just skip the all of this.
-
- // TIGHT server message capabilities
- this._sock.rQskipBytes(16 * numServerMessages);
-
- // TIGHT client message capabilities
- this._sock.rQskipBytes(16 * numClientMessages);
-
- // TIGHT encoding capabilities
- this._sock.rQskipBytes(16 * numEncodings);
- }
-
- // NB(directxman12): these are down here so that we don't run them multiple times
- // if we backtrack
- Log.Info("Screen: " + width + "x" + height +
- ", bpp: " + bpp + ", depth: " + depth +
- ", big_endian: " + big_endian +
- ", true_color: " + true_color +
- ", red_max: " + red_max +
- ", green_max: " + green_max +
- ", blue_max: " + blue_max +
- ", red_shift: " + red_shift +
- ", green_shift: " + green_shift +
- ", blue_shift: " + blue_shift);
-
- if (big_endian !== 0) {
- Log.Warn("Server native endian is not little endian");
- }
-
- if (red_shift !== 16) {
- Log.Warn("Server native red-shift is not 16");
- }
-
- if (blue_shift !== 0) {
- Log.Warn("Server native blue-shift is not 0");
- }
-
- // we're past the point where we could backtrack, so it's safe to call this
- var event = new CustomEvent("desktopname",
- { detail: { name: this._fb_name } });
- this.dispatchEvent(event);
-
- this._resize(width, height);
-
- if (!this._viewOnly) { this._keyboard.grab(); }
- if (!this._viewOnly) { this._mouse.grab(); }
-
- this._fb_depth = 24;
-
- if (this._fb_name === "Intel(r) AMT KVM") {
- Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode.");
- this._fb_depth = 8;
- } else if (this._fb_name === "MBSE BrewBoard") {
- Log.Warn("MBSE BrewBoard only supports 8 bit depths. Using low color mode.");
- this._fb_depth = 8;
- }
-
- RFB.messages.pixelFormat(this._sock, this._fb_depth, true);
- this._sendEncodings();
- RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fb_width, this._fb_height);
-
- this._timing.fbu_rt_start = (new Date()).getTime();
- this._timing.pixels = 0;
-
- // Cursor will be server side until the server decides to honor
- // our request and send over the cursor image
- this._display.disableLocalCursor();
-
- this._updateConnectionState('connected');
- return true;
- },
-
- _sendEncodings: function () {
- var encs = [];
-
- // In preference order
- encs.push(encodings.encodingCopyRect);
- // Only supported with full depth support
- if (this._fb_depth == 24) {
- encs.push(encodings.encodingTight);
- encs.push(encodings.encodingHextile);
- encs.push(encodings.encodingRRE);
- }
- encs.push(encodings.encodingRaw);
-
- // Psuedo-encoding settings
- encs.push(encodings.pseudoEncodingTightPNG);
- encs.push(encodings.pseudoEncodingQualityLevel0 + 6);
- encs.push(encodings.pseudoEncodingCompressLevel0 + 2);
-
- encs.push(encodings.pseudoEncodingDesktopSize);
- encs.push(encodings.pseudoEncodingLastRect);
- encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent);
- encs.push(encodings.pseudoEncodingExtendedDesktopSize);
- encs.push(encodings.pseudoEncodingXvp);
- encs.push(encodings.pseudoEncodingFence);
- encs.push(encodings.pseudoEncodingContinuousUpdates);
-
- if (supportsCursorURIs() &&
- !isTouchDevice && this._fb_depth == 24) {
- encs.push(encodings.pseudoEncodingCursor);
- }
-
- RFB.messages.clientEncodings(this._sock, encs);
- },
-
- /* RFB protocol initialization states:
- * ProtocolVersion
- * Security
- * Authentication
- * SecurityResult
- * ClientInitialization - not triggered by server message
- * ServerInitialization
- */
- _init_msg: function () {
- switch (this._rfb_init_state) {
- case 'ProtocolVersion':
- return this._negotiate_protocol_version();
-
- case 'Security':
- return this._negotiate_security();
-
- case 'Authentication':
- return this._negotiate_authentication();
-
- case 'SecurityResult':
- return this._handle_security_result();
-
- case 'ClientInitialisation':
- this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation
- this._rfb_init_state = 'ServerInitialisation';
- return true;
-
- case 'ServerInitialisation':
- return this._negotiate_server_init();
-
- default:
- return this._fail("Unknown init state (state: " +
- this._rfb_init_state + ")");
- }
- },
-
- _handle_set_colour_map_msg: function () {
- Log.Debug("SetColorMapEntries");
-
- return this._fail("Unexpected SetColorMapEntries message");
- },
-
- _handle_server_cut_text: function () {
- Log.Debug("ServerCutText");
-
- if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; }
- this._sock.rQskipBytes(3); // Padding
- var length = this._sock.rQshift32();
- if (this._sock.rQwait("ServerCutText", length, 8)) { return false; }
-
- var text = this._sock.rQshiftStr(length);
-
- if (this._viewOnly) { return true; }
-
- var event = new CustomEvent("clipboard",
- { detail: { text: text } });
- this.dispatchEvent(event);
-
- return true;
- },
-
- _handle_server_fence_msg: function() {
- if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; }
- this._sock.rQskipBytes(3); // Padding
- var flags = this._sock.rQshift32();
- var length = this._sock.rQshift8();
-
- if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; }
-
- if (length > 64) {
- Log.Warn("Bad payload length (" + length + ") in fence response");
- length = 64;
- }
-
- var payload = this._sock.rQshiftStr(length);
-
- this._supportsFence = true;
-
- /*
- * Fence flags
- *
- * (1<<0) - BlockBefore
- * (1<<1) - BlockAfter
- * (1<<2) - SyncNext
- * (1<<31) - Request
- */
-
- if (!(flags & (1<<31))) {
- return this._fail("Unexpected fence response");
- }
-
- // Filter out unsupported flags
- // FIXME: support syncNext
- flags &= (1<<0) | (1<<1);
-
- // BlockBefore and BlockAfter are automatically handled by
- // the fact that we process each incoming message
- // synchronuosly.
- RFB.messages.clientFence(this._sock, flags, payload);
-
- return true;
- },
-
- _handle_xvp_msg: function () {
- if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; }
- this._sock.rQskip8(); // Padding
- var xvp_ver = this._sock.rQshift8();
- var xvp_msg = this._sock.rQshift8();
-
- switch (xvp_msg) {
- case 0: // XVP_FAIL
- Log.Error("XVP Operation Failed");
- break;
- case 1: // XVP_INIT
- this._rfb_xvp_ver = xvp_ver;
- Log.Info("XVP extensions enabled (version " + this._rfb_xvp_ver + ")");
- this._setCapability("power", true);
- break;
- default:
- this._fail("Illegal server XVP message (msg: " + xvp_msg + ")");
- break;
- }
-
- return true;
- },
-
- _normal_msg: function () {
- var msg_type;
-
- if (this._FBU.rects > 0) {
- msg_type = 0;
- } else {
- msg_type = this._sock.rQshift8();
- }
-
- switch (msg_type) {
- case 0: // FramebufferUpdate
- var ret = this._framebufferUpdate();
- if (ret && !this._enabledContinuousUpdates) {
- RFB.messages.fbUpdateRequest(this._sock, true, 0, 0,
- this._fb_width, this._fb_height);
- }
- return ret;
-
- case 1: // SetColorMapEntries
- return this._handle_set_colour_map_msg();
-
- case 2: // Bell
- Log.Debug("Bell");
- var event = new CustomEvent("bell", { detail: {} });
- this.dispatchEvent(event);
- return true;
-
- case 3: // ServerCutText
- return this._handle_server_cut_text();
-
- case 150: // EndOfContinuousUpdates
- var first = !(this._supportsContinuousUpdates);
- this._supportsContinuousUpdates = true;
- this._enabledContinuousUpdates = false;
- if (first) {
- this._enabledContinuousUpdates = true;
- this._updateContinuousUpdates();
- Log.Info("Enabling continuous updates.");
- } else {
- // FIXME: We need to send a framebufferupdaterequest here
- // if we add support for turning off continuous updates
- }
- return true;
-
- case 248: // ServerFence
- return this._handle_server_fence_msg();
-
- case 250: // XVP
- return this._handle_xvp_msg();
-
- default:
- this._fail("Unexpected server message (type " + msg_type + ")");
- Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30));
- return true;
- }
- },
-
- _onFlush: function() {
- this._flushing = false;
- // Resume processing
- if (this._sock.rQlen() > 0) {
- this._handle_message();
- }
- },
-
- _framebufferUpdate: function () {
- var ret = true;
- var now;
-
- if (this._FBU.rects === 0) {
- if (this._sock.rQwait("FBU header", 3, 1)) { return false; }
- this._sock.rQskip8(); // Padding
- this._FBU.rects = this._sock.rQshift16();
- this._FBU.bytes = 0;
- this._timing.cur_fbu = 0;
- if (this._timing.fbu_rt_start > 0) {
- now = (new Date()).getTime();
- Log.Info("First FBU latency: " + (now - this._timing.fbu_rt_start));
- }
-
- // Make sure the previous frame is fully rendered first
- // to avoid building up an excessive queue
- if (this._display.pending()) {
- this._flushing = true;
- this._display.flush();
- return false;
- }
- }
-
- while (this._FBU.rects > 0) {
- if (this._rfb_connection_state !== 'connected') { return false; }
-
- if (this._sock.rQwait("FBU", this._FBU.bytes)) { return false; }
- if (this._FBU.bytes === 0) {
- if (this._sock.rQwait("rect header", 12)) { return false; }
- /* New FramebufferUpdate */
-
- var hdr = this._sock.rQshiftBytes(12);
- this._FBU.x = (hdr[0] << 8) + hdr[1];
- this._FBU.y = (hdr[2] << 8) + hdr[3];
- this._FBU.width = (hdr[4] << 8) + hdr[5];
- this._FBU.height = (hdr[6] << 8) + hdr[7];
- this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) +
- (hdr[10] << 8) + hdr[11], 10);
-
- if (!this._encHandlers[this._FBU.encoding]) {
- this._fail("Unsupported encoding (encoding: " +
- this._FBU.encoding + ")");
- return false;
- }
- }
-
- this._timing.last_fbu = (new Date()).getTime();
-
- ret = this._encHandlers[this._FBU.encoding]();
-
- now = (new Date()).getTime();
- this._timing.cur_fbu += (now - this._timing.last_fbu);
-
- if (ret) {
- if (!(this._FBU.encoding in this._encStats)) {
- this._encStats[this._FBU.encoding] = [0, 0];
- }
- this._encStats[this._FBU.encoding][0]++;
- this._encStats[this._FBU.encoding][1]++;
- this._timing.pixels += this._FBU.width * this._FBU.height;
- }
-
- if (this._timing.pixels >= (this._fb_width * this._fb_height)) {
- if ((this._FBU.width === this._fb_width && this._FBU.height === this._fb_height) ||
- this._timing.fbu_rt_start > 0) {
- this._timing.full_fbu_total += this._timing.cur_fbu;
- this._timing.full_fbu_cnt++;
- Log.Info("Timing of full FBU, curr: " +
- this._timing.cur_fbu + ", total: " +
- this._timing.full_fbu_total + ", cnt: " +
- this._timing.full_fbu_cnt + ", avg: " +
- (this._timing.full_fbu_total / this._timing.full_fbu_cnt));
- }
-
- if (this._timing.fbu_rt_start > 0) {
- var fbu_rt_diff = now - this._timing.fbu_rt_start;
- this._timing.fbu_rt_total += fbu_rt_diff;
- this._timing.fbu_rt_cnt++;
- Log.Info("full FBU round-trip, cur: " +
- fbu_rt_diff + ", total: " +
- this._timing.fbu_rt_total + ", cnt: " +
- this._timing.fbu_rt_cnt + ", avg: " +
- (this._timing.fbu_rt_total / this._timing.fbu_rt_cnt));
- this._timing.fbu_rt_start = 0;
- }
- }
-
- if (!ret) { return ret; } // need more data
- }
-
- this._display.flip();
-
- return true; // We finished this FBU
- },
-
- _updateContinuousUpdates: function() {
- if (!this._enabledContinuousUpdates) { return; }
-
- RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0,
- this._fb_width, this._fb_height);
- },
-
- _resize: function(width, height) {
- this._fb_width = width;
- this._fb_height = height;
-
- this._destBuff = new Uint8Array(this._fb_width * this._fb_height * 4);
-
- this._display.resize(this._fb_width, this._fb_height);
-
- // Adjust the visible viewport based on the new dimensions
- this._updateClip();
- this._updateScale();
-
- this._timing.fbu_rt_start = (new Date()).getTime();
- this._updateContinuousUpdates();
- },
-
- _xvpOp: function (ver, op) {
- if (this._rfb_xvp_ver < ver) { return; }
- Log.Info("Sending XVP operation " + op + " (version " + ver + ")");
- RFB.messages.xvpOp(this._sock, ver, op);
- },
-};
-
-Object.assign(RFB.prototype, EventTargetMixin);
-
-// Class Methods
-RFB.messages = {
- keyEvent: function (sock, keysym, down) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 4; // msg-type
- buff[offset + 1] = down;
-
- buff[offset + 2] = 0;
- buff[offset + 3] = 0;
-
- buff[offset + 4] = (keysym >> 24);
- buff[offset + 5] = (keysym >> 16);
- buff[offset + 6] = (keysym >> 8);
- buff[offset + 7] = keysym;
-
- sock._sQlen += 8;
- sock.flush();
- },
-
- QEMUExtendedKeyEvent: function (sock, keysym, down, keycode) {
- function getRFBkeycode(xt_scancode) {
- var upperByte = (keycode >> 8);
- var lowerByte = (keycode & 0x00ff);
- if (upperByte === 0xe0 && lowerByte < 0x7f) {
- lowerByte = lowerByte | 0x80;
- return lowerByte;
- }
- return xt_scancode;
- }
-
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 255; // msg-type
- buff[offset + 1] = 0; // sub msg-type
-
- buff[offset + 2] = (down >> 8);
- buff[offset + 3] = down;
-
- buff[offset + 4] = (keysym >> 24);
- buff[offset + 5] = (keysym >> 16);
- buff[offset + 6] = (keysym >> 8);
- buff[offset + 7] = keysym;
-
- var RFBkeycode = getRFBkeycode(keycode);
-
- buff[offset + 8] = (RFBkeycode >> 24);
- buff[offset + 9] = (RFBkeycode >> 16);
- buff[offset + 10] = (RFBkeycode >> 8);
- buff[offset + 11] = RFBkeycode;
-
- sock._sQlen += 12;
- sock.flush();
- },
-
- pointerEvent: function (sock, x, y, mask) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 5; // msg-type
-
- buff[offset + 1] = mask;
-
- buff[offset + 2] = x >> 8;
- buff[offset + 3] = x;
-
- buff[offset + 4] = y >> 8;
- buff[offset + 5] = y;
-
- sock._sQlen += 6;
- sock.flush();
- },
-
- // TODO(directxman12): make this unicode compatible?
- clientCutText: function (sock, text) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 6; // msg-type
-
- buff[offset + 1] = 0; // padding
- buff[offset + 2] = 0; // padding
- buff[offset + 3] = 0; // padding
-
- var n = text.length;
-
- buff[offset + 4] = n >> 24;
- buff[offset + 5] = n >> 16;
- buff[offset + 6] = n >> 8;
- buff[offset + 7] = n;
-
- for (var i = 0; i < n; i++) {
- buff[offset + 8 + i] = text.charCodeAt(i);
- }
-
- sock._sQlen += 8 + n;
- sock.flush();
- },
-
- setDesktopSize: function (sock, width, height, id, flags) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 251; // msg-type
- buff[offset + 1] = 0; // padding
- buff[offset + 2] = width >> 8; // width
- buff[offset + 3] = width;
- buff[offset + 4] = height >> 8; // height
- buff[offset + 5] = height;
-
- buff[offset + 6] = 1; // number-of-screens
- buff[offset + 7] = 0; // padding
-
- // screen array
- buff[offset + 8] = id >> 24; // id
- buff[offset + 9] = id >> 16;
- buff[offset + 10] = id >> 8;
- buff[offset + 11] = id;
- buff[offset + 12] = 0; // x-position
- buff[offset + 13] = 0;
- buff[offset + 14] = 0; // y-position
- buff[offset + 15] = 0;
- buff[offset + 16] = width >> 8; // width
- buff[offset + 17] = width;
- buff[offset + 18] = height >> 8; // height
- buff[offset + 19] = height;
- buff[offset + 20] = flags >> 24; // flags
- buff[offset + 21] = flags >> 16;
- buff[offset + 22] = flags >> 8;
- buff[offset + 23] = flags;
-
- sock._sQlen += 24;
- sock.flush();
- },
-
- clientFence: function (sock, flags, payload) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 248; // msg-type
-
- buff[offset + 1] = 0; // padding
- buff[offset + 2] = 0; // padding
- buff[offset + 3] = 0; // padding
-
- buff[offset + 4] = flags >> 24; // flags
- buff[offset + 5] = flags >> 16;
- buff[offset + 6] = flags >> 8;
- buff[offset + 7] = flags;
-
- var n = payload.length;
-
- buff[offset + 8] = n; // length
-
- for (var i = 0; i < n; i++) {
- buff[offset + 9 + i] = payload.charCodeAt(i);
- }
-
- sock._sQlen += 9 + n;
- sock.flush();
- },
-
- enableContinuousUpdates: function (sock, enable, x, y, width, height) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 150; // msg-type
- buff[offset + 1] = enable; // enable-flag
-
- buff[offset + 2] = x >> 8; // x
- buff[offset + 3] = x;
- buff[offset + 4] = y >> 8; // y
- buff[offset + 5] = y;
- buff[offset + 6] = width >> 8; // width
- buff[offset + 7] = width;
- buff[offset + 8] = height >> 8; // height
- buff[offset + 9] = height;
-
- sock._sQlen += 10;
- sock.flush();
- },
-
- pixelFormat: function (sock, depth, true_color) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- var bpp, bits;
-
- if (depth > 16) {
- bpp = 32;
- } else if (depth > 8) {
- bpp = 16;
- } else {
- bpp = 8;
- }
-
- bits = Math.floor(depth/3);
-
- buff[offset] = 0; // msg-type
-
- buff[offset + 1] = 0; // padding
- buff[offset + 2] = 0; // padding
- buff[offset + 3] = 0; // padding
-
- buff[offset + 4] = bpp; // bits-per-pixel
- buff[offset + 5] = depth; // depth
- buff[offset + 6] = 0; // little-endian
- buff[offset + 7] = true_color ? 1 : 0; // true-color
-
- buff[offset + 8] = 0; // red-max
- buff[offset + 10] = 0; // green-max
- buff[offset + 12] = 0; // blue-max
-
- if (depth == 8) {
- buff[offset + 9] = 7; // red-max
- buff[offset + 11] = 7; // green-max
- buff[offset + 13] = 3; // blue-max
- buff[offset + 14] = 5; // red-shift
- buff[offset + 15] = 2; // green-shift
- buff[offset + 16] = 0; // blue-shift
- } else {
- buff[offset + 9] = (1 << bits) - 1; // red-max
- buff[offset + 11] = (1 << bits) - 1; // green-max
- buff[offset + 13] = (1 << bits) - 1; // blue-max
- buff[offset + 14] = bits * 2; // red-shift
- buff[offset + 15] = bits * 1; // green-shift
- buff[offset + 16] = bits * 0; // blue-shift
- }
-
- buff[offset + 17] = 0; // padding
- buff[offset + 18] = 0; // padding
- buff[offset + 19] = 0; // padding
-
- sock._sQlen += 20;
- sock.flush();
- },
-
- clientEncodings: function (sock, encodings) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 2; // msg-type
- buff[offset + 1] = 0; // padding
-
- buff[offset + 2] = encodings.length >> 8;
- buff[offset + 3] = encodings.length;
-
- var i, j = offset + 4;
- for (i = 0; i < encodings.length; i++) {
- var enc = encodings[i];
- buff[j] = enc >> 24;
- buff[j + 1] = enc >> 16;
- buff[j + 2] = enc >> 8;
- buff[j + 3] = enc;
-
- j += 4;
- }
-
- sock._sQlen += j - offset;
- sock.flush();
- },
-
- fbUpdateRequest: function (sock, incremental, x, y, w, h) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- if (typeof(x) === "undefined") { x = 0; }
- if (typeof(y) === "undefined") { y = 0; }
-
- buff[offset] = 3; // msg-type
- buff[offset + 1] = incremental ? 1 : 0;
-
- buff[offset + 2] = (x >> 8) & 0xFF;
- buff[offset + 3] = x & 0xFF;
-
- buff[offset + 4] = (y >> 8) & 0xFF;
- buff[offset + 5] = y & 0xFF;
-
- buff[offset + 6] = (w >> 8) & 0xFF;
- buff[offset + 7] = w & 0xFF;
-
- buff[offset + 8] = (h >> 8) & 0xFF;
- buff[offset + 9] = h & 0xFF;
-
- sock._sQlen += 10;
- sock.flush();
- },
-
- xvpOp: function (sock, ver, op) {
- var buff = sock._sQ;
- var offset = sock._sQlen;
-
- buff[offset] = 250; // msg-type
- buff[offset + 1] = 0; // padding
-
- buff[offset + 2] = ver;
- buff[offset + 3] = op;
-
- sock._sQlen += 4;
- sock.flush();
- },
-};
-
-RFB.genDES = function (password, challenge) {
- var passwd = [];
- for (var i = 0; i < password.length; i++) {
- passwd.push(password.charCodeAt(i));
- }
- return (new DES(passwd)).encrypt(challenge);
-};
-
-RFB.encodingHandlers = {
- RAW: function () {
- if (this._FBU.lines === 0) {
- this._FBU.lines = this._FBU.height;
- }
-
- var pixelSize = this._fb_depth == 8 ? 1 : 4;
- this._FBU.bytes = this._FBU.width * pixelSize; // at least a line
- if (this._sock.rQwait("RAW", this._FBU.bytes)) { return false; }
- var cur_y = this._FBU.y + (this._FBU.height - this._FBU.lines);
- var curr_height = Math.min(this._FBU.lines,
- Math.floor(this._sock.rQlen() / (this._FBU.width * pixelSize)));
- var data = this._sock.get_rQ();
- var index = this._sock.get_rQi();
- if (this._fb_depth == 8) {
- var pixels = this._FBU.width * curr_height
- var newdata = new Uint8Array(pixels * 4);
- var i;
- for (i = 0;i < pixels;i++) {
- //newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3;
- //newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x3) * 255 / 3;
- //newdata[i * 4 + 2] = ((data[index + i] >> 4) & 0x3) * 255 / 3;
- // Convert 8 bit RGB332 color to internal RGB888.
- newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3; // blue
- newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x7) * 255 / 7; // green
- newdata[i * 4 + 2] = ((data[index + i] >> 5) & 0x7) * 255 / 7; // red
- newdata[i * 4 + 4] = 0;
- }
- data = newdata;
- index = 0;
- }
- this._display.blitImage(this._FBU.x, cur_y, this._FBU.width,
- curr_height, data, index);
- this._sock.rQskipBytes(this._FBU.width * curr_height * pixelSize);
- this._FBU.lines -= curr_height;
-
- if (this._FBU.lines > 0) {
- this._FBU.bytes = this._FBU.width * pixelSize; // At least another line
- } else {
- this._FBU.rects--;
- this._FBU.bytes = 0;
- }
-
- return true;
- },
-
- COPYRECT: function () {
- this._FBU.bytes = 4;
- if (this._sock.rQwait("COPYRECT", 4)) { return false; }
- this._display.copyImage(this._sock.rQshift16(), this._sock.rQshift16(),
- this._FBU.x, this._FBU.y, this._FBU.width,
- this._FBU.height);
-
- this._FBU.rects--;
- this._FBU.bytes = 0;
- return true;
- },
-
- RRE: function () {
- var color;
- if (this._FBU.subrects === 0) {
- this._FBU.bytes = 4 + 4;
- if (this._sock.rQwait("RRE", 4 + 4)) { return false; }
- this._FBU.subrects = this._sock.rQshift32();
- color = this._sock.rQshiftBytes(4); // Background
- this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, color);
- }
-
- while (this._FBU.subrects > 0 && this._sock.rQlen() >= (4 + 8)) {
- color = this._sock.rQshiftBytes(4);
- var x = this._sock.rQshift16();
- var y = this._sock.rQshift16();
- var width = this._sock.rQshift16();
- var height = this._sock.rQshift16();
- this._display.fillRect(this._FBU.x + x, this._FBU.y + y, width, height, color);
- this._FBU.subrects--;
- }
-
- if (this._FBU.subrects > 0) {
- var chunk = Math.min(this._rre_chunk_sz, this._FBU.subrects);
- this._FBU.bytes = (4 + 8) * chunk;
- } else {
- this._FBU.rects--;
- this._FBU.bytes = 0;
- }
-
- return true;
- },
-
- HEXTILE: function () {
- var rQ = this._sock.get_rQ();
- var rQi = this._sock.get_rQi();
-
- if (this._FBU.tiles === 0) {
- this._FBU.tiles_x = Math.ceil(this._FBU.width / 16);
- this._FBU.tiles_y = Math.ceil(this._FBU.height / 16);
- this._FBU.total_tiles = this._FBU.tiles_x * this._FBU.tiles_y;
- this._FBU.tiles = this._FBU.total_tiles;
- }
-
- while (this._FBU.tiles > 0) {
- this._FBU.bytes = 1;
- if (this._sock.rQwait("HEXTILE subencoding", this._FBU.bytes)) { return false; }
- var subencoding = rQ[rQi]; // Peek
- if (subencoding > 30) { // Raw
- this._fail("Illegal hextile subencoding (subencoding: " +
- subencoding + ")");
- return false;
- }
-
- var subrects = 0;
- var curr_tile = this._FBU.total_tiles - this._FBU.tiles;
- var tile_x = curr_tile % this._FBU.tiles_x;
- var tile_y = Math.floor(curr_tile / this._FBU.tiles_x);
- var x = this._FBU.x + tile_x * 16;
- var y = this._FBU.y + tile_y * 16;
- var w = Math.min(16, (this._FBU.x + this._FBU.width) - x);
- var h = Math.min(16, (this._FBU.y + this._FBU.height) - y);
-
- // Figure out how much we are expecting
- if (subencoding & 0x01) { // Raw
- this._FBU.bytes += w * h * 4;
- } else {
- if (subencoding & 0x02) { // Background
- this._FBU.bytes += 4;
- }
- if (subencoding & 0x04) { // Foreground
- this._FBU.bytes += 4;
- }
- if (subencoding & 0x08) { // AnySubrects
- this._FBU.bytes++; // Since we aren't shifting it off
- if (this._sock.rQwait("hextile subrects header", this._FBU.bytes)) { return false; }
- subrects = rQ[rQi + this._FBU.bytes - 1]; // Peek
- if (subencoding & 0x10) { // SubrectsColoured
- this._FBU.bytes += subrects * (4 + 2);
- } else {
- this._FBU.bytes += subrects * 2;
- }
- }
- }
-
- if (this._sock.rQwait("hextile", this._FBU.bytes)) { return false; }
-
- // We know the encoding and have a whole tile
- this._FBU.subencoding = rQ[rQi];
- rQi++;
- if (this._FBU.subencoding === 0) {
- if (this._FBU.lastsubencoding & 0x01) {
- // Weird: ignore blanks are RAW
- Log.Debug(" Ignoring blank after RAW");
- } else {
- this._display.fillRect(x, y, w, h, this._FBU.background);
- }
- } else if (this._FBU.subencoding & 0x01) { // Raw
- this._display.blitImage(x, y, w, h, rQ, rQi);
- rQi += this._FBU.bytes - 1;
- } else {
- if (this._FBU.subencoding & 0x02) { // Background
- this._FBU.background = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
- rQi += 4;
- }
- if (this._FBU.subencoding & 0x04) { // Foreground
- this._FBU.foreground = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
- rQi += 4;
- }
-
- this._display.startTile(x, y, w, h, this._FBU.background);
- if (this._FBU.subencoding & 0x08) { // AnySubrects
- subrects = rQ[rQi];
- rQi++;
-
- for (var s = 0; s < subrects; s++) {
- var color;
- if (this._FBU.subencoding & 0x10) { // SubrectsColoured
- color = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
- rQi += 4;
- } else {
- color = this._FBU.foreground;
- }
- var xy = rQ[rQi];
- rQi++;
- var sx = (xy >> 4);
- var sy = (xy & 0x0f);
-
- var wh = rQ[rQi];
- rQi++;
- var sw = (wh >> 4) + 1;
- var sh = (wh & 0x0f) + 1;
-
- this._display.subTile(sx, sy, sw, sh, color);
- }
- }
- this._display.finishTile();
- }
- this._sock.set_rQi(rQi);
- this._FBU.lastsubencoding = this._FBU.subencoding;
- this._FBU.bytes = 0;
- this._FBU.tiles--;
- }
-
- if (this._FBU.tiles === 0) {
- this._FBU.rects--;
- }
-
- return true;
- },
-
- TIGHT: function () {
- this._FBU.bytes = 1; // compression-control byte
- if (this._sock.rQwait("TIGHT compression-control", this._FBU.bytes)) { return false; }
-
- var checksum = function (data) {
- var sum = 0;
- for (var i = 0; i < data.length; i++) {
- sum += data[i];
- if (sum > 65536) sum -= 65536;
- }
- return sum;
- };
-
- var resetStreams = 0;
- var streamId = -1;
- var decompress = function (data, expected) {
- for (var i = 0; i < 4; i++) {
- if ((resetStreams >> i) & 1) {
- this._FBU.zlibs[i].reset();
- Log.Info("Reset zlib stream " + i);
- }
- }
-
- //var uncompressed = this._FBU.zlibs[streamId].uncompress(data, 0);
- var uncompressed = this._FBU.zlibs[streamId].inflate(data, true, expected);
- /*if (uncompressed.status !== 0) {
- Log.Error("Invalid data in zlib stream");
- }*/
-
- //return uncompressed.data;
- return uncompressed;
- }.bind(this);
-
- var indexedToRGBX2Color = function (data, palette, width, height) {
- // Convert indexed (palette based) image data to RGB
- // TODO: reduce number of calculations inside loop
- var dest = this._destBuff;
- var w = Math.floor((width + 7) / 8);
- var w1 = Math.floor(width / 8);
-
- /*for (var y = 0; y < height; y++) {
- var b, x, dp, sp;
- var yoffset = y * width;
- var ybitoffset = y * w;
- var xoffset, targetbyte;
- for (x = 0; x < w1; x++) {
- xoffset = yoffset + x * 8;
- targetbyte = data[ybitoffset + x];
- for (b = 7; b >= 0; b--) {
- dp = (xoffset + 7 - b) * 3;
- sp = (targetbyte >> b & 1) * 3;
- dest[dp] = palette[sp];
- dest[dp + 1] = palette[sp + 1];
- dest[dp + 2] = palette[sp + 2];
- }
- }
-
- xoffset = yoffset + x * 8;
- targetbyte = data[ybitoffset + x];
- for (b = 7; b >= 8 - width % 8; b--) {
- dp = (xoffset + 7 - b) * 3;
- sp = (targetbyte >> b & 1) * 3;
- dest[dp] = palette[sp];
- dest[dp + 1] = palette[sp + 1];
- dest[dp + 2] = palette[sp + 2];
- }
- }*/
-
- for (var y = 0; y < height; y++) {
- var b, x, dp, sp;
- for (x = 0; x < w1; x++) {
- for (b = 7; b >= 0; b--) {
- dp = (y * width + x * 8 + 7 - b) * 4;
- sp = (data[y * w + x] >> b & 1) * 3;
- dest[dp] = palette[sp];
- dest[dp + 1] = palette[sp + 1];
- dest[dp + 2] = palette[sp + 2];
- dest[dp + 3] = 255;
- }
- }
-
- for (b = 7; b >= 8 - width % 8; b--) {
- dp = (y * width + x * 8 + 7 - b) * 4;
- sp = (data[y * w + x] >> b & 1) * 3;
- dest[dp] = palette[sp];
- dest[dp + 1] = palette[sp + 1];
- dest[dp + 2] = palette[sp + 2];
- dest[dp + 3] = 255;
- }
- }
-
- return dest;
- }.bind(this);
-
- var indexedToRGBX = function (data, palette, width, height) {
- // Convert indexed (palette based) image data to RGB
- var dest = this._destBuff;
- var total = width * height * 4;
- for (var i = 0, j = 0; i < total; i += 4, j++) {
- var sp = data[j] * 3;
- dest[i] = palette[sp];
- dest[i + 1] = palette[sp + 1];
- dest[i + 2] = palette[sp + 2];
- dest[i + 3] = 255;
- }
-
- return dest;
- }.bind(this);
-
- var rQi = this._sock.get_rQi();
- var rQ = this._sock.rQwhole();
- var cmode, data;
- var cl_header, cl_data;
-
- var handlePalette = function () {
- var numColors = rQ[rQi + 2] + 1;
- var paletteSize = numColors * 3;
- this._FBU.bytes += paletteSize;
- if (this._sock.rQwait("TIGHT palette " + cmode, this._FBU.bytes)) { return false; }
-
- var bpp = (numColors <= 2) ? 1 : 8;
- var rowSize = Math.floor((this._FBU.width * bpp + 7) / 8);
- var raw = false;
- if (rowSize * this._FBU.height < 12) {
- raw = true;
- cl_header = 0;
- cl_data = rowSize * this._FBU.height;
- //clength = [0, rowSize * this._FBU.height];
- } else {
- // begin inline getTightCLength (returning two-item arrays is bad for performance with GC)
- var cl_offset = rQi + 3 + paletteSize;
- cl_header = 1;
- cl_data = 0;
- cl_data += rQ[cl_offset] & 0x7f;
- if (rQ[cl_offset] & 0x80) {
- cl_header++;
- cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
- if (rQ[cl_offset + 1] & 0x80) {
- cl_header++;
- cl_data += rQ[cl_offset + 2] << 14;
- }
- }
- // end inline getTightCLength
- }
-
- this._FBU.bytes += cl_header + cl_data;
- if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
-
- // Shift ctl, filter id, num colors, palette entries, and clength off
- this._sock.rQskipBytes(3);
- //var palette = this._sock.rQshiftBytes(paletteSize);
- this._sock.rQshiftTo(this._paletteBuff, paletteSize);
- this._sock.rQskipBytes(cl_header);
-
- if (raw) {
- data = this._sock.rQshiftBytes(cl_data);
- } else {
- data = decompress(this._sock.rQshiftBytes(cl_data), rowSize * this._FBU.height);
- }
-
- // Convert indexed (palette based) image data to RGB
- var rgbx;
- if (numColors == 2) {
- rgbx = indexedToRGBX2Color(data, this._paletteBuff, this._FBU.width, this._FBU.height);
- this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false);
- } else {
- rgbx = indexedToRGBX(data, this._paletteBuff, this._FBU.width, this._FBU.height);
- this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false);
- }
-
-
- return true;
- }.bind(this);
-
- var handleCopy = function () {
- var raw = false;
- var uncompressedSize = this._FBU.width * this._FBU.height * 3;
- if (uncompressedSize < 12) {
- raw = true;
- cl_header = 0;
- cl_data = uncompressedSize;
- } else {
- // begin inline getTightCLength (returning two-item arrays is for peformance with GC)
- var cl_offset = rQi + 1;
- cl_header = 1;
- cl_data = 0;
- cl_data += rQ[cl_offset] & 0x7f;
- if (rQ[cl_offset] & 0x80) {
- cl_header++;
- cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
- if (rQ[cl_offset + 1] & 0x80) {
- cl_header++;
- cl_data += rQ[cl_offset + 2] << 14;
- }
- }
- // end inline getTightCLength
- }
- this._FBU.bytes = 1 + cl_header + cl_data;
- if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
-
- // Shift ctl, clength off
- this._sock.rQshiftBytes(1 + cl_header);
-
- if (raw) {
- data = this._sock.rQshiftBytes(cl_data);
- } else {
- data = decompress(this._sock.rQshiftBytes(cl_data), uncompressedSize);
- }
-
- this._display.blitRgbImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, data, 0, false);
-
- return true;
- }.bind(this);
-
- var ctl = this._sock.rQpeek8();
-
- // Keep tight reset bits
- resetStreams = ctl & 0xF;
-
- // Figure out filter
- ctl = ctl >> 4;
- streamId = ctl & 0x3;
-
- if (ctl === 0x08) cmode = "fill";
- else if (ctl === 0x09) cmode = "jpeg";
- else if (ctl === 0x0A) cmode = "png";
- else if (ctl & 0x04) cmode = "filter";
- else if (ctl < 0x04) cmode = "copy";
- else return this._fail("Illegal tight compression received (ctl: " +
- ctl + ")");
-
- switch (cmode) {
- // fill use depth because TPIXELs drop the padding byte
- case "fill": // TPIXEL
- this._FBU.bytes += 3;
- break;
- case "jpeg": // max clength
- this._FBU.bytes += 3;
- break;
- case "png": // max clength
- this._FBU.bytes += 3;
- break;
- case "filter": // filter id + num colors if palette
- this._FBU.bytes += 2;
- break;
- case "copy":
- break;
- }
-
- if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
-
- // Determine FBU.bytes
- switch (cmode) {
- case "fill":
- // skip ctl byte
- this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, [rQ[rQi + 3], rQ[rQi + 2], rQ[rQi + 1]], false);
- this._sock.rQskipBytes(4);
- break;
- case "png":
- case "jpeg":
- // begin inline getTightCLength (returning two-item arrays is for peformance with GC)
- var cl_offset = rQi + 1;
- cl_header = 1;
- cl_data = 0;
- cl_data += rQ[cl_offset] & 0x7f;
- if (rQ[cl_offset] & 0x80) {
- cl_header++;
- cl_data += (rQ[cl_offset + 1] & 0x7f) << 7;
- if (rQ[cl_offset + 1] & 0x80) {
- cl_header++;
- cl_data += rQ[cl_offset + 2] << 14;
- }
- }
- // end inline getTightCLength
- this._FBU.bytes = 1 + cl_header + cl_data; // ctl + clength size + jpeg-data
- if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; }
-
- // We have everything, render it
- this._sock.rQskipBytes(1 + cl_header); // shift off clt + compact length
- data = this._sock.rQshiftBytes(cl_data);
- this._display.imageRect(this._FBU.x, this._FBU.y, "image/" + cmode, data);
- break;
- case "filter":
- var filterId = rQ[rQi + 1];
- if (filterId === 1) {
- if (!handlePalette()) { return false; }
- } else {
- // Filter 0, Copy could be valid here, but servers don't send it as an explicit filter
- // Filter 2, Gradient is valid but not use if jpeg is enabled
- this._fail("Unsupported tight subencoding received " +
- "(filter: " + filterId + ")");
- }
- break;
- case "copy":
- if (!handleCopy()) { return false; }
- break;
- }
-
-
- this._FBU.bytes = 0;
- this._FBU.rects--;
-
- return true;
- },
-
- last_rect: function () {
- this._FBU.rects = 0;
- return true;
- },
-
- ExtendedDesktopSize: function () {
- this._FBU.bytes = 1;
- if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; }
-
- var firstUpdate = !this._supportsSetDesktopSize;
- this._supportsSetDesktopSize = true;
-
- // Normally we only apply the current resize mode after a
- // window resize event. However there is no such trigger on the
- // initial connect. And we don't know if the server supports
- // resizing until we've gotten here.
- if (firstUpdate) {
- this._requestRemoteResize();
- }
-
- var number_of_screens = this._sock.rQpeek8();
-
- this._FBU.bytes = 4 + (number_of_screens * 16);
- if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; }
-
- this._sock.rQskipBytes(1); // number-of-screens
- this._sock.rQskipBytes(3); // padding
-
- for (var i = 0; i < number_of_screens; i += 1) {
- // Save the id and flags of the first screen
- if (i === 0) {
- this._screen_id = this._sock.rQshiftBytes(4); // id
- this._sock.rQskipBytes(2); // x-position
- this._sock.rQskipBytes(2); // y-position
- this._sock.rQskipBytes(2); // width
- this._sock.rQskipBytes(2); // height
- this._screen_flags = this._sock.rQshiftBytes(4); // flags
- } else {
- this._sock.rQskipBytes(16);
- }
- }
-
- /*
- * The x-position indicates the reason for the change:
- *
- * 0 - server resized on its own
- * 1 - this client requested the resize
- * 2 - another client requested the resize
- */
-
- // We need to handle errors when we requested the resize.
- if (this._FBU.x === 1 && this._FBU.y !== 0) {
- var msg = "";
- // The y-position indicates the status code from the server
- switch (this._FBU.y) {
- case 1:
- msg = "Resize is administratively prohibited";
- break;
- case 2:
- msg = "Out of resources";
- break;
- case 3:
- msg = "Invalid screen layout";
- break;
- default:
- msg = "Unknown reason";
- break;
- }
- Log.Warn("Server did not accept the resize request: "
- + msg);
- } else {
- this._resize(this._FBU.width, this._FBU.height);
- }
-
- this._FBU.bytes = 0;
- this._FBU.rects -= 1;
- return true;
- },
-
- DesktopSize: function () {
- this._resize(this._FBU.width, this._FBU.height);
- this._FBU.bytes = 0;
- this._FBU.rects -= 1;
- return true;
- },
-
- Cursor: function () {
- Log.Debug(">> set_cursor");
- var x = this._FBU.x; // hotspot-x
- var y = this._FBU.y; // hotspot-y
- var w = this._FBU.width;
- var h = this._FBU.height;
-
- var pixelslength = w * h * 4;
- var masklength = Math.floor((w + 7) / 8) * h;
-
- this._FBU.bytes = pixelslength + masklength;
- if (this._sock.rQwait("cursor encoding", this._FBU.bytes)) { return false; }
-
- this._display.changeCursor(this._sock.rQshiftBytes(pixelslength),
- this._sock.rQshiftBytes(masklength),
- x, y, w, h);
-
- this._FBU.bytes = 0;
- this._FBU.rects--;
-
- Log.Debug("<< set_cursor");
- return true;
- },
-
- QEMUExtendedKeyEvent: function () {
- this._FBU.rects--;
-
- // Old Safari doesn't support creating keyboard events
- try {
- var keyboardEvent = document.createEvent("keyboardEvent");
- if (keyboardEvent.code !== undefined) {
- this._qemuExtKeyEventSupported = true;
- }
- } catch (err) {
- }
- },
-};