1 /* |
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2 * noVNC: HTML5 VNC client |
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3 * Copyright (C) 2012 Joel Martin |
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4 * Copyright (C) 2017 Samuel Mannehed for Cendio AB |
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5 * Licensed under MPL 2.0 (see LICENSE.txt) |
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6 * |
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7 * See README.md for usage and integration instructions. |
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8 * |
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9 * TIGHT decoder portion: |
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10 * (c) 2012 Michael Tinglof, Joe Balaz, Les Piech (Mercuri.ca) |
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11 */ |
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12 |
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13 import * as Log from './util/logging.js'; |
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14 import { decodeUTF8 } from './util/strings.js'; |
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15 import { supportsCursorURIs, isTouchDevice } from './util/browser.js'; |
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16 import EventTargetMixin from './util/eventtarget.js'; |
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17 import Display from "./display.js"; |
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18 import Keyboard from "./input/keyboard.js"; |
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19 import Mouse from "./input/mouse.js"; |
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20 import Websock from "./websock.js"; |
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21 import DES from "./des.js"; |
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22 import KeyTable from "./input/keysym.js"; |
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23 import XtScancode from "./input/xtscancodes.js"; |
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24 import Inflator from "./inflator.js"; |
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25 import { encodings, encodingName } from "./encodings.js"; |
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26 import "./util/polyfill.js"; |
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27 |
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28 /*jslint white: false, browser: true */ |
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29 /*global window, Util, Display, Keyboard, Mouse, Websock, Websock_native, Base64, DES, KeyTable, Inflator, XtScancode */ |
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30 |
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31 // How many seconds to wait for a disconnect to finish |
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32 var DISCONNECT_TIMEOUT = 3; |
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33 |
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34 export default function RFB(target, url, options) { |
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35 if (!target) { |
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36 throw Error("Must specify target"); |
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37 } |
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38 if (!url) { |
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39 throw Error("Must specify URL"); |
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40 } |
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41 |
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42 this._target = target; |
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43 this._url = url; |
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44 |
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45 // Connection details |
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46 options = options || {}; |
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47 this._rfb_credentials = options.credentials || {}; |
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48 this._shared = 'shared' in options ? !!options.shared : true; |
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49 this._repeaterID = options.repeaterID || ''; |
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50 |
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51 // Internal state |
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52 this._rfb_connection_state = ''; |
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53 this._rfb_init_state = ''; |
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54 this._rfb_auth_scheme = ''; |
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55 this._rfb_clean_disconnect = true; |
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56 |
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57 // Server capabilities |
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58 this._rfb_version = 0; |
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59 this._rfb_max_version = 3.8; |
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60 this._rfb_tightvnc = false; |
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61 this._rfb_xvp_ver = 0; |
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62 |
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63 this._fb_width = 0; |
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64 this._fb_height = 0; |
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65 |
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66 this._fb_name = ""; |
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67 |
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68 this._capabilities = { power: false }; |
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69 |
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70 this._supportsFence = false; |
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71 |
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72 this._supportsContinuousUpdates = false; |
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73 this._enabledContinuousUpdates = false; |
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74 |
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75 this._supportsSetDesktopSize = false; |
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76 this._screen_id = 0; |
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77 this._screen_flags = 0; |
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78 |
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79 this._qemuExtKeyEventSupported = false; |
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80 |
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81 // Internal objects |
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82 this._sock = null; // Websock object |
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83 this._display = null; // Display object |
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84 this._flushing = false; // Display flushing state |
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85 this._keyboard = null; // Keyboard input handler object |
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86 this._mouse = null; // Mouse input handler object |
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87 |
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88 // Timers |
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89 this._disconnTimer = null; // disconnection timer |
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90 this._resizeTimeout = null; // resize rate limiting |
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91 |
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92 // Decoder states and stats |
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93 this._encHandlers = {}; |
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94 this._encStats = {}; |
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95 |
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96 this._FBU = { |
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97 rects: 0, |
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98 subrects: 0, // RRE and HEXTILE |
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99 lines: 0, // RAW |
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100 tiles: 0, // HEXTILE |
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101 bytes: 0, |
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102 x: 0, |
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103 y: 0, |
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104 width: 0, |
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105 height: 0, |
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106 encoding: 0, |
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107 subencoding: -1, |
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108 background: null, |
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109 zlibs: [] // TIGHT zlib streams |
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110 }; |
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111 for (var i = 0; i < 4; i++) { |
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112 this._FBU.zlibs[i] = new Inflator(); |
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113 } |
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114 |
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115 this._destBuff = null; |
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116 this._paletteBuff = new Uint8Array(1024); // 256 * 4 (max palette size * max bytes-per-pixel) |
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117 |
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118 this._rre_chunk_sz = 100; |
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119 |
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120 this._timing = { |
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121 last_fbu: 0, |
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122 fbu_total: 0, |
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123 fbu_total_cnt: 0, |
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124 full_fbu_total: 0, |
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125 full_fbu_cnt: 0, |
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126 |
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127 fbu_rt_start: 0, |
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128 fbu_rt_total: 0, |
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129 fbu_rt_cnt: 0, |
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130 pixels: 0 |
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131 }; |
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132 |
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133 // Mouse state |
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134 this._mouse_buttonMask = 0; |
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135 this._mouse_arr = []; |
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136 this._viewportDragging = false; |
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137 this._viewportDragPos = {}; |
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138 this._viewportHasMoved = false; |
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139 |
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140 // Bound event handlers |
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141 this._eventHandlers = { |
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142 focusCanvas: this._focusCanvas.bind(this), |
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143 windowResize: this._windowResize.bind(this), |
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144 }; |
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145 |
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146 // main setup |
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147 Log.Debug(">> RFB.constructor"); |
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148 |
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149 // Create DOM elements |
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150 this._screen = document.createElement('div'); |
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151 this._screen.style.display = 'flex'; |
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152 this._screen.style.width = '100%'; |
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153 this._screen.style.height = '100%'; |
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154 this._screen.style.overflow = 'auto'; |
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155 this._screen.style.backgroundColor = 'rgb(40, 40, 40)'; |
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156 this._canvas = document.createElement('canvas'); |
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157 this._canvas.style.margin = 'auto'; |
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158 // Some browsers add an outline on focus |
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159 this._canvas.style.outline = 'none'; |
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160 // IE miscalculates width without this :( |
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161 this._canvas.style.flexShrink = '0'; |
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162 this._canvas.width = 0; |
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163 this._canvas.height = 0; |
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164 this._canvas.tabIndex = -1; |
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165 this._screen.appendChild(this._canvas); |
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166 |
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167 // populate encHandlers with bound versions |
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168 this._encHandlers[encodings.encodingRaw] = RFB.encodingHandlers.RAW.bind(this); |
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169 this._encHandlers[encodings.encodingCopyRect] = RFB.encodingHandlers.COPYRECT.bind(this); |
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170 this._encHandlers[encodings.encodingRRE] = RFB.encodingHandlers.RRE.bind(this); |
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171 this._encHandlers[encodings.encodingHextile] = RFB.encodingHandlers.HEXTILE.bind(this); |
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172 this._encHandlers[encodings.encodingTight] = RFB.encodingHandlers.TIGHT.bind(this); |
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173 |
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174 this._encHandlers[encodings.pseudoEncodingDesktopSize] = RFB.encodingHandlers.DesktopSize.bind(this); |
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175 this._encHandlers[encodings.pseudoEncodingLastRect] = RFB.encodingHandlers.last_rect.bind(this); |
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176 this._encHandlers[encodings.pseudoEncodingCursor] = RFB.encodingHandlers.Cursor.bind(this); |
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177 this._encHandlers[encodings.pseudoEncodingQEMUExtendedKeyEvent] = RFB.encodingHandlers.QEMUExtendedKeyEvent.bind(this); |
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178 this._encHandlers[encodings.pseudoEncodingExtendedDesktopSize] = RFB.encodingHandlers.ExtendedDesktopSize.bind(this); |
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179 |
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180 // NB: nothing that needs explicit teardown should be done |
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181 // before this point, since this can throw an exception |
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182 try { |
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183 this._display = new Display(this._canvas); |
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184 } catch (exc) { |
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185 Log.Error("Display exception: " + exc); |
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186 throw exc; |
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187 } |
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188 this._display.onflush = this._onFlush.bind(this); |
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189 this._display.clear(); |
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190 |
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191 this._keyboard = new Keyboard(this._canvas); |
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192 this._keyboard.onkeyevent = this._handleKeyEvent.bind(this); |
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193 |
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194 this._mouse = new Mouse(this._canvas); |
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195 this._mouse.onmousebutton = this._handleMouseButton.bind(this); |
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196 this._mouse.onmousemove = this._handleMouseMove.bind(this); |
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197 |
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198 this._sock = new Websock(); |
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199 this._sock.on('message', this._handle_message.bind(this)); |
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200 this._sock.on('open', function () { |
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201 if ((this._rfb_connection_state === 'connecting') && |
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202 (this._rfb_init_state === '')) { |
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203 this._rfb_init_state = 'ProtocolVersion'; |
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204 Log.Debug("Starting VNC handshake"); |
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205 } else { |
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206 this._fail("Unexpected server connection while " + |
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207 this._rfb_connection_state); |
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208 } |
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209 }.bind(this)); |
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210 this._sock.on('close', function (e) { |
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211 Log.Debug("WebSocket on-close event"); |
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212 var msg = ""; |
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213 if (e.code) { |
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214 msg = "(code: " + e.code; |
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215 if (e.reason) { |
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216 msg += ", reason: " + e.reason; |
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217 } |
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218 msg += ")"; |
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219 } |
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220 switch (this._rfb_connection_state) { |
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221 case 'connecting': |
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222 this._fail("Connection closed " + msg); |
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223 break; |
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224 case 'connected': |
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225 // Handle disconnects that were initiated server-side |
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226 this._updateConnectionState('disconnecting'); |
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227 this._updateConnectionState('disconnected'); |
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228 break; |
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229 case 'disconnecting': |
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230 // Normal disconnection path |
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231 this._updateConnectionState('disconnected'); |
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232 break; |
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233 case 'disconnected': |
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234 this._fail("Unexpected server disconnect " + |
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235 "when already disconnected " + msg); |
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236 break; |
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237 default: |
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238 this._fail("Unexpected server disconnect before connecting " + |
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239 msg); |
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240 break; |
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241 } |
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242 this._sock.off('close'); |
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243 }.bind(this)); |
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244 this._sock.on('error', function (e) { |
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245 Log.Warn("WebSocket on-error event"); |
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246 }); |
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247 |
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248 // Slight delay of the actual connection so that the caller has |
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249 // time to set up callbacks |
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250 setTimeout(this._updateConnectionState.bind(this, 'connecting')); |
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251 |
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252 Log.Debug("<< RFB.constructor"); |
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253 }; |
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254 |
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255 RFB.prototype = { |
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256 // ===== PROPERTIES ===== |
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257 |
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258 dragViewport: false, |
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259 focusOnClick: true, |
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260 |
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261 _viewOnly: false, |
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262 get viewOnly() { return this._viewOnly; }, |
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263 set viewOnly(viewOnly) { |
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264 this._viewOnly = viewOnly; |
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265 |
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266 if (this._rfb_connection_state === "connecting" || |
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267 this._rfb_connection_state === "connected") { |
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268 if (viewOnly) { |
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269 this._keyboard.ungrab(); |
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270 this._mouse.ungrab(); |
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271 } else { |
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272 this._keyboard.grab(); |
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273 this._mouse.grab(); |
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274 } |
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275 } |
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276 }, |
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277 |
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278 get capabilities() { return this._capabilities; }, |
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279 |
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280 get touchButton() { return this._mouse.touchButton; }, |
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281 set touchButton(button) { this._mouse.touchButton = button; }, |
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282 |
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283 _clipViewport: false, |
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284 get clipViewport() { return this._clipViewport; }, |
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285 set clipViewport(viewport) { |
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286 this._clipViewport = viewport; |
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287 this._updateClip(); |
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288 }, |
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289 |
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290 _scaleViewport: false, |
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291 get scaleViewport() { return this._scaleViewport; }, |
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292 set scaleViewport(scale) { |
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293 this._scaleViewport = scale; |
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294 // Scaling trumps clipping, so we may need to adjust |
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295 // clipping when enabling or disabling scaling |
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296 if (scale && this._clipViewport) { |
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297 this._updateClip(); |
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298 } |
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299 this._updateScale(); |
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300 if (!scale && this._clipViewport) { |
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301 this._updateClip(); |
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302 } |
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303 }, |
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304 |
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305 _resizeSession: false, |
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306 get resizeSession() { return this._resizeSession; }, |
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307 set resizeSession(resize) { |
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308 this._resizeSession = resize; |
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309 if (resize) { |
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310 this._requestRemoteResize(); |
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311 } |
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312 }, |
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313 |
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314 // ===== PUBLIC METHODS ===== |
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315 |
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316 disconnect: function () { |
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317 this._updateConnectionState('disconnecting'); |
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318 this._sock.off('error'); |
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319 this._sock.off('message'); |
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320 this._sock.off('open'); |
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321 }, |
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322 |
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323 sendCredentials: function (creds) { |
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324 this._rfb_credentials = creds; |
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325 setTimeout(this._init_msg.bind(this), 0); |
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326 }, |
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327 |
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328 sendCtrlAltDel: function () { |
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329 if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
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330 Log.Info("Sending Ctrl-Alt-Del"); |
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331 |
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332 this.sendKey(KeyTable.XK_Control_L, "ControlLeft", true); |
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333 this.sendKey(KeyTable.XK_Alt_L, "AltLeft", true); |
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334 this.sendKey(KeyTable.XK_Delete, "Delete", true); |
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335 this.sendKey(KeyTable.XK_Delete, "Delete", false); |
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336 this.sendKey(KeyTable.XK_Alt_L, "AltLeft", false); |
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337 this.sendKey(KeyTable.XK_Control_L, "ControlLeft", false); |
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338 }, |
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339 |
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340 machineShutdown: function () { |
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341 this._xvpOp(1, 2); |
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342 }, |
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343 |
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344 machineReboot: function () { |
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345 this._xvpOp(1, 3); |
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346 }, |
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347 |
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348 machineReset: function () { |
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349 this._xvpOp(1, 4); |
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350 }, |
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351 |
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352 // Send a key press. If 'down' is not specified then send a down key |
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353 // followed by an up key. |
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354 sendKey: function (keysym, code, down) { |
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355 if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
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356 |
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357 if (down === undefined) { |
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358 this.sendKey(keysym, code, true); |
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359 this.sendKey(keysym, code, false); |
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360 return; |
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361 } |
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362 |
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363 var scancode = XtScancode[code]; |
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364 |
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365 if (this._qemuExtKeyEventSupported && scancode) { |
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366 // 0 is NoSymbol |
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367 keysym = keysym || 0; |
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368 |
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369 Log.Info("Sending key (" + (down ? "down" : "up") + "): keysym " + keysym + ", scancode " + scancode); |
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370 |
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371 RFB.messages.QEMUExtendedKeyEvent(this._sock, keysym, down, scancode); |
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372 } else { |
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373 if (!keysym) { |
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374 return; |
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375 } |
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376 Log.Info("Sending keysym (" + (down ? "down" : "up") + "): " + keysym); |
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377 RFB.messages.keyEvent(this._sock, keysym, down ? 1 : 0); |
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378 } |
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379 }, |
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380 |
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381 focus: function () { |
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382 this._canvas.focus(); |
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383 }, |
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384 |
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385 blur: function () { |
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386 this._canvas.blur(); |
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387 }, |
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388 |
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389 clipboardPasteFrom: function (text) { |
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390 if (this._rfb_connection_state !== 'connected' || this._viewOnly) { return; } |
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391 RFB.messages.clientCutText(this._sock, text); |
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392 }, |
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393 |
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394 // ===== PRIVATE METHODS ===== |
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395 |
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396 _connect: function () { |
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397 Log.Debug(">> RFB.connect"); |
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398 |
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399 Log.Info("connecting to " + this._url); |
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400 |
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401 try { |
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402 // WebSocket.onopen transitions to the RFB init states |
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403 this._sock.open(this._url, ['binary']); |
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404 } catch (e) { |
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405 if (e.name === 'SyntaxError') { |
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406 this._fail("Invalid host or port (" + e + ")"); |
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407 } else { |
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408 this._fail("Error when opening socket (" + e + ")"); |
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409 } |
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410 } |
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411 |
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412 // Make our elements part of the page |
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413 this._target.appendChild(this._screen); |
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414 |
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415 // Monitor size changes of the screen |
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416 // FIXME: Use ResizeObserver, or hidden overflow |
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417 window.addEventListener('resize', this._eventHandlers.windowResize); |
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418 |
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419 // Always grab focus on some kind of click event |
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420 this._canvas.addEventListener("mousedown", this._eventHandlers.focusCanvas); |
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421 this._canvas.addEventListener("touchstart", this._eventHandlers.focusCanvas); |
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422 |
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423 Log.Debug("<< RFB.connect"); |
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424 }, |
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425 |
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426 _disconnect: function () { |
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427 Log.Debug(">> RFB.disconnect"); |
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428 this._canvas.removeEventListener("mousedown", this._eventHandlers.focusCanvas); |
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429 this._canvas.removeEventListener("touchstart", this._eventHandlers.focusCanvas); |
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430 window.removeEventListener('resize', this._eventHandlers.windowResize); |
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431 this._keyboard.ungrab(); |
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432 this._mouse.ungrab(); |
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433 this._sock.close(); |
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434 this._print_stats(); |
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435 try { |
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436 this._target.removeChild(this._screen); |
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437 } catch (e) { |
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438 if (e.name === 'NotFoundError') { |
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439 // Some cases where the initial connection fails |
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440 // can disconnect before the _screen is created |
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441 } else { |
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442 throw e; |
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443 } |
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444 } |
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445 clearTimeout(this._resizeTimeout); |
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446 Log.Debug("<< RFB.disconnect"); |
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447 }, |
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448 |
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449 _print_stats: function () { |
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450 var stats = this._encStats; |
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451 |
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452 Log.Info("Encoding stats for this connection:"); |
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453 Object.keys(stats).forEach(function (key) { |
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454 var s = stats[key]; |
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455 if (s[0] + s[1] > 0) { |
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456 Log.Info(" " + encodingName(key) + ": " + s[0] + " rects"); |
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457 } |
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458 }); |
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459 |
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460 Log.Info("Encoding stats since page load:"); |
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461 Object.keys(stats).forEach(function (key) { |
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462 var s = stats[key]; |
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463 Log.Info(" " + encodingName(key) + ": " + s[1] + " rects"); |
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464 }); |
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465 }, |
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466 |
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467 _focusCanvas: function(event) { |
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468 // Respect earlier handlers' request to not do side-effects |
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469 if (event.defaultPrevented) { |
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470 return; |
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471 } |
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472 |
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473 if (!this.focusOnClick) { |
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474 return; |
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475 } |
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476 |
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477 this.focus(); |
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478 }, |
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479 |
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480 _windowResize: function (event) { |
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481 // If the window resized then our screen element might have |
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482 // as well. Update the viewport dimensions. |
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483 window.requestAnimationFrame(function () { |
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484 this._updateClip(); |
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485 this._updateScale(); |
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486 }.bind(this)); |
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487 |
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488 if (this._resizeSession) { |
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489 // Request changing the resolution of the remote display to |
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490 // the size of the local browser viewport. |
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491 |
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492 // In order to not send multiple requests before the browser-resize |
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493 // is finished we wait 0.5 seconds before sending the request. |
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494 clearTimeout(this._resizeTimeout); |
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495 this._resizeTimeout = setTimeout(this._requestRemoteResize.bind(this), 500); |
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496 } |
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497 }, |
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498 |
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499 // Update state of clipping in Display object, and make sure the |
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500 // configured viewport matches the current screen size |
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501 _updateClip: function () { |
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502 var cur_clip = this._display.clipViewport; |
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503 var new_clip = this._clipViewport; |
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504 |
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505 if (this._scaleViewport) { |
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506 // Disable viewport clipping if we are scaling |
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507 new_clip = false; |
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508 } |
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509 |
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510 if (cur_clip !== new_clip) { |
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511 this._display.clipViewport = new_clip; |
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512 } |
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513 |
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514 if (new_clip) { |
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515 // When clipping is enabled, the screen is limited to |
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516 // the size of the container. |
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517 let size = this._screenSize(); |
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518 this._display.viewportChangeSize(size.w, size.h); |
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519 this._fixScrollbars(); |
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520 } |
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521 }, |
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522 |
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523 _updateScale: function () { |
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524 if (!this._scaleViewport) { |
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525 this._display.scale = 1.0; |
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526 } else { |
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527 let size = this._screenSize(); |
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528 this._display.autoscale(size.w, size.h); |
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529 } |
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530 this._fixScrollbars(); |
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531 }, |
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532 |
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533 // Requests a change of remote desktop size. This message is an extension |
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534 // and may only be sent if we have received an ExtendedDesktopSize message |
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535 _requestRemoteResize: function () { |
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536 clearTimeout(this._resizeTimeout); |
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537 this._resizeTimeout = null; |
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538 |
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539 if (!this._resizeSession || this._viewOnly || |
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540 !this._supportsSetDesktopSize) { |
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541 return; |
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542 } |
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543 |
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544 let size = this._screenSize(); |
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545 RFB.messages.setDesktopSize(this._sock, size.w, size.h, |
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546 this._screen_id, this._screen_flags); |
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547 |
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548 Log.Debug('Requested new desktop size: ' + |
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549 size.w + 'x' + size.h); |
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550 }, |
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551 |
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552 // Gets the the size of the available screen |
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553 _screenSize: function () { |
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554 return { w: this._screen.offsetWidth, |
|
555 h: this._screen.offsetHeight }; |
|
556 }, |
|
557 |
|
558 _fixScrollbars: function () { |
|
559 // This is a hack because Chrome screws up the calculation |
|
560 // for when scrollbars are needed. So to fix it we temporarily |
|
561 // toggle them off and on. |
|
562 var orig = this._screen.style.overflow; |
|
563 this._screen.style.overflow = 'hidden'; |
|
564 // Force Chrome to recalculate the layout by asking for |
|
565 // an element's dimensions |
|
566 this._screen.getBoundingClientRect(); |
|
567 this._screen.style.overflow = orig; |
|
568 }, |
|
569 |
|
570 /* |
|
571 * Connection states: |
|
572 * connecting |
|
573 * connected |
|
574 * disconnecting |
|
575 * disconnected - permanent state |
|
576 */ |
|
577 _updateConnectionState: function (state) { |
|
578 var oldstate = this._rfb_connection_state; |
|
579 |
|
580 if (state === oldstate) { |
|
581 Log.Debug("Already in state '" + state + "', ignoring"); |
|
582 return; |
|
583 } |
|
584 |
|
585 // The 'disconnected' state is permanent for each RFB object |
|
586 if (oldstate === 'disconnected') { |
|
587 Log.Error("Tried changing state of a disconnected RFB object"); |
|
588 return; |
|
589 } |
|
590 |
|
591 // Ensure proper transitions before doing anything |
|
592 switch (state) { |
|
593 case 'connected': |
|
594 if (oldstate !== 'connecting') { |
|
595 Log.Error("Bad transition to connected state, " + |
|
596 "previous connection state: " + oldstate); |
|
597 return; |
|
598 } |
|
599 break; |
|
600 |
|
601 case 'disconnected': |
|
602 if (oldstate !== 'disconnecting') { |
|
603 Log.Error("Bad transition to disconnected state, " + |
|
604 "previous connection state: " + oldstate); |
|
605 return; |
|
606 } |
|
607 break; |
|
608 |
|
609 case 'connecting': |
|
610 if (oldstate !== '') { |
|
611 Log.Error("Bad transition to connecting state, " + |
|
612 "previous connection state: " + oldstate); |
|
613 return; |
|
614 } |
|
615 break; |
|
616 |
|
617 case 'disconnecting': |
|
618 if (oldstate !== 'connected' && oldstate !== 'connecting') { |
|
619 Log.Error("Bad transition to disconnecting state, " + |
|
620 "previous connection state: " + oldstate); |
|
621 return; |
|
622 } |
|
623 break; |
|
624 |
|
625 default: |
|
626 Log.Error("Unknown connection state: " + state); |
|
627 return; |
|
628 } |
|
629 |
|
630 // State change actions |
|
631 |
|
632 this._rfb_connection_state = state; |
|
633 |
|
634 var smsg = "New state '" + state + "', was '" + oldstate + "'."; |
|
635 Log.Debug(smsg); |
|
636 |
|
637 if (this._disconnTimer && state !== 'disconnecting') { |
|
638 Log.Debug("Clearing disconnect timer"); |
|
639 clearTimeout(this._disconnTimer); |
|
640 this._disconnTimer = null; |
|
641 |
|
642 // make sure we don't get a double event |
|
643 this._sock.off('close'); |
|
644 } |
|
645 |
|
646 switch (state) { |
|
647 case 'connecting': |
|
648 this._connect(); |
|
649 break; |
|
650 |
|
651 case 'connected': |
|
652 var event = new CustomEvent("connect", { detail: {} }); |
|
653 this.dispatchEvent(event); |
|
654 break; |
|
655 |
|
656 case 'disconnecting': |
|
657 this._disconnect(); |
|
658 |
|
659 this._disconnTimer = setTimeout(function () { |
|
660 Log.Error("Disconnection timed out."); |
|
661 this._updateConnectionState('disconnected'); |
|
662 }.bind(this), DISCONNECT_TIMEOUT * 1000); |
|
663 break; |
|
664 |
|
665 case 'disconnected': |
|
666 event = new CustomEvent( |
|
667 "disconnect", { detail: |
|
668 { clean: this._rfb_clean_disconnect } }); |
|
669 this.dispatchEvent(event); |
|
670 break; |
|
671 } |
|
672 }, |
|
673 |
|
674 /* Print errors and disconnect |
|
675 * |
|
676 * The parameter 'details' is used for information that |
|
677 * should be logged but not sent to the user interface. |
|
678 */ |
|
679 _fail: function (details) { |
|
680 switch (this._rfb_connection_state) { |
|
681 case 'disconnecting': |
|
682 Log.Error("Failed when disconnecting: " + details); |
|
683 break; |
|
684 case 'connected': |
|
685 Log.Error("Failed while connected: " + details); |
|
686 break; |
|
687 case 'connecting': |
|
688 Log.Error("Failed when connecting: " + details); |
|
689 break; |
|
690 default: |
|
691 Log.Error("RFB failure: " + details); |
|
692 break; |
|
693 } |
|
694 this._rfb_clean_disconnect = false; //This is sent to the UI |
|
695 |
|
696 // Transition to disconnected without waiting for socket to close |
|
697 this._updateConnectionState('disconnecting'); |
|
698 this._updateConnectionState('disconnected'); |
|
699 |
|
700 return false; |
|
701 }, |
|
702 |
|
703 _setCapability: function (cap, val) { |
|
704 this._capabilities[cap] = val; |
|
705 var event = new CustomEvent("capabilities", |
|
706 { detail: { capabilities: this._capabilities } }); |
|
707 this.dispatchEvent(event); |
|
708 }, |
|
709 |
|
710 _handle_message: function () { |
|
711 if (this._sock.rQlen() === 0) { |
|
712 Log.Warn("handle_message called on an empty receive queue"); |
|
713 return; |
|
714 } |
|
715 |
|
716 switch (this._rfb_connection_state) { |
|
717 case 'disconnected': |
|
718 Log.Error("Got data while disconnected"); |
|
719 break; |
|
720 case 'connected': |
|
721 while (true) { |
|
722 if (this._flushing) { |
|
723 break; |
|
724 } |
|
725 if (!this._normal_msg()) { |
|
726 break; |
|
727 } |
|
728 if (this._sock.rQlen() === 0) { |
|
729 break; |
|
730 } |
|
731 } |
|
732 break; |
|
733 default: |
|
734 this._init_msg(); |
|
735 break; |
|
736 } |
|
737 }, |
|
738 |
|
739 _handleKeyEvent: function (keysym, code, down) { |
|
740 this.sendKey(keysym, code, down); |
|
741 }, |
|
742 |
|
743 _handleMouseButton: function (x, y, down, bmask) { |
|
744 if (down) { |
|
745 this._mouse_buttonMask |= bmask; |
|
746 } else { |
|
747 this._mouse_buttonMask &= ~bmask; |
|
748 } |
|
749 |
|
750 if (this.dragViewport) { |
|
751 if (down && !this._viewportDragging) { |
|
752 this._viewportDragging = true; |
|
753 this._viewportDragPos = {'x': x, 'y': y}; |
|
754 this._viewportHasMoved = false; |
|
755 |
|
756 // Skip sending mouse events |
|
757 return; |
|
758 } else { |
|
759 this._viewportDragging = false; |
|
760 |
|
761 // If we actually performed a drag then we are done |
|
762 // here and should not send any mouse events |
|
763 if (this._viewportHasMoved) { |
|
764 return; |
|
765 } |
|
766 |
|
767 // Otherwise we treat this as a mouse click event. |
|
768 // Send the button down event here, as the button up |
|
769 // event is sent at the end of this function. |
|
770 RFB.messages.pointerEvent(this._sock, |
|
771 this._display.absX(x), |
|
772 this._display.absY(y), |
|
773 bmask); |
|
774 } |
|
775 } |
|
776 |
|
777 if (this._viewOnly) { return; } // View only, skip mouse events |
|
778 |
|
779 if (this._rfb_connection_state !== 'connected') { return; } |
|
780 RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); |
|
781 }, |
|
782 |
|
783 _handleMouseMove: function (x, y) { |
|
784 if (this._viewportDragging) { |
|
785 var deltaX = this._viewportDragPos.x - x; |
|
786 var deltaY = this._viewportDragPos.y - y; |
|
787 |
|
788 // The goal is to trigger on a certain physical width, the |
|
789 // devicePixelRatio brings us a bit closer but is not optimal. |
|
790 var dragThreshold = 10 * (window.devicePixelRatio || 1); |
|
791 |
|
792 if (this._viewportHasMoved || (Math.abs(deltaX) > dragThreshold || |
|
793 Math.abs(deltaY) > dragThreshold)) { |
|
794 this._viewportHasMoved = true; |
|
795 |
|
796 this._viewportDragPos = {'x': x, 'y': y}; |
|
797 this._display.viewportChangePos(deltaX, deltaY); |
|
798 } |
|
799 |
|
800 // Skip sending mouse events |
|
801 return; |
|
802 } |
|
803 |
|
804 if (this._viewOnly) { return; } // View only, skip mouse events |
|
805 |
|
806 if (this._rfb_connection_state !== 'connected') { return; } |
|
807 RFB.messages.pointerEvent(this._sock, this._display.absX(x), this._display.absY(y), this._mouse_buttonMask); |
|
808 }, |
|
809 |
|
810 // Message Handlers |
|
811 |
|
812 _negotiate_protocol_version: function () { |
|
813 if (this._sock.rQlen() < 12) { |
|
814 return this._fail("Received incomplete protocol version."); |
|
815 } |
|
816 |
|
817 var sversion = this._sock.rQshiftStr(12).substr(4, 7); |
|
818 Log.Info("Server ProtocolVersion: " + sversion); |
|
819 var is_repeater = 0; |
|
820 switch (sversion) { |
|
821 case "000.000": // UltraVNC repeater |
|
822 is_repeater = 1; |
|
823 break; |
|
824 case "003.003": |
|
825 case "003.006": // UltraVNC |
|
826 case "003.889": // Apple Remote Desktop |
|
827 this._rfb_version = 3.3; |
|
828 break; |
|
829 case "003.007": |
|
830 this._rfb_version = 3.7; |
|
831 break; |
|
832 case "003.008": |
|
833 case "004.000": // Intel AMT KVM |
|
834 case "004.001": // RealVNC 4.6 |
|
835 case "005.000": // RealVNC 5.3 |
|
836 this._rfb_version = 3.8; |
|
837 break; |
|
838 default: |
|
839 return this._fail("Invalid server version " + sversion); |
|
840 } |
|
841 |
|
842 if (is_repeater) { |
|
843 var repeaterID = "ID:" + this._repeaterID; |
|
844 while (repeaterID.length < 250) { |
|
845 repeaterID += "\0"; |
|
846 } |
|
847 this._sock.send_string(repeaterID); |
|
848 return true; |
|
849 } |
|
850 |
|
851 if (this._rfb_version > this._rfb_max_version) { |
|
852 this._rfb_version = this._rfb_max_version; |
|
853 } |
|
854 |
|
855 var cversion = "00" + parseInt(this._rfb_version, 10) + |
|
856 ".00" + ((this._rfb_version * 10) % 10); |
|
857 this._sock.send_string("RFB " + cversion + "\n"); |
|
858 Log.Debug('Sent ProtocolVersion: ' + cversion); |
|
859 |
|
860 this._rfb_init_state = 'Security'; |
|
861 }, |
|
862 |
|
863 _negotiate_security: function () { |
|
864 // Polyfill since IE and PhantomJS doesn't have |
|
865 // TypedArray.includes() |
|
866 function includes(item, array) { |
|
867 for (var i = 0; i < array.length; i++) { |
|
868 if (array[i] === item) { |
|
869 return true; |
|
870 } |
|
871 } |
|
872 return false; |
|
873 } |
|
874 |
|
875 if (this._rfb_version >= 3.7) { |
|
876 // Server sends supported list, client decides |
|
877 var num_types = this._sock.rQshift8(); |
|
878 if (this._sock.rQwait("security type", num_types, 1)) { return false; } |
|
879 |
|
880 if (num_types === 0) { |
|
881 return this._handle_security_failure("no security types"); |
|
882 } |
|
883 |
|
884 var types = this._sock.rQshiftBytes(num_types); |
|
885 Log.Debug("Server security types: " + types); |
|
886 |
|
887 // Look for each auth in preferred order |
|
888 this._rfb_auth_scheme = 0; |
|
889 if (includes(1, types)) { |
|
890 this._rfb_auth_scheme = 1; // None |
|
891 } else if (includes(22, types)) { |
|
892 this._rfb_auth_scheme = 22; // XVP |
|
893 } else if (includes(16, types)) { |
|
894 this._rfb_auth_scheme = 16; // Tight |
|
895 } else if (includes(2, types)) { |
|
896 this._rfb_auth_scheme = 2; // VNC Auth |
|
897 } else { |
|
898 return this._fail("Unsupported security types (types: " + types + ")"); |
|
899 } |
|
900 |
|
901 this._sock.send([this._rfb_auth_scheme]); |
|
902 } else { |
|
903 // Server decides |
|
904 if (this._sock.rQwait("security scheme", 4)) { return false; } |
|
905 this._rfb_auth_scheme = this._sock.rQshift32(); |
|
906 } |
|
907 |
|
908 this._rfb_init_state = 'Authentication'; |
|
909 Log.Debug('Authenticating using scheme: ' + this._rfb_auth_scheme); |
|
910 |
|
911 return this._init_msg(); // jump to authentication |
|
912 }, |
|
913 |
|
914 /* |
|
915 * Get the security failure reason if sent from the server and |
|
916 * send the 'securityfailure' event. |
|
917 * |
|
918 * - The optional parameter context can be used to add some extra |
|
919 * context to the log output. |
|
920 * |
|
921 * - The optional parameter security_result_status can be used to |
|
922 * add a custom status code to the event. |
|
923 */ |
|
924 _handle_security_failure: function (context, security_result_status) { |
|
925 |
|
926 if (typeof context === 'undefined') { |
|
927 context = ""; |
|
928 } else { |
|
929 context = " on " + context; |
|
930 } |
|
931 |
|
932 if (typeof security_result_status === 'undefined') { |
|
933 security_result_status = 1; // fail |
|
934 } |
|
935 |
|
936 if (this._sock.rQwait("reason length", 4)) { |
|
937 return false; |
|
938 } |
|
939 let strlen = this._sock.rQshift32(); |
|
940 let reason = ""; |
|
941 |
|
942 if (strlen > 0) { |
|
943 if (this._sock.rQwait("reason", strlen, 8)) { return false; } |
|
944 reason = this._sock.rQshiftStr(strlen); |
|
945 } |
|
946 |
|
947 if (reason !== "") { |
|
948 |
|
949 let event = new CustomEvent( |
|
950 "securityfailure", |
|
951 { detail: { status: security_result_status, reason: reason } }); |
|
952 this.dispatchEvent(event); |
|
953 |
|
954 return this._fail("Security negotiation failed" + context + |
|
955 " (reason: " + reason + ")"); |
|
956 } else { |
|
957 |
|
958 let event = new CustomEvent( |
|
959 "securityfailure", |
|
960 { detail: { status: security_result_status } }); |
|
961 this.dispatchEvent(event); |
|
962 |
|
963 return this._fail("Security negotiation failed" + context); |
|
964 } |
|
965 }, |
|
966 |
|
967 // authentication |
|
968 _negotiate_xvp_auth: function () { |
|
969 if (!this._rfb_credentials.username || |
|
970 !this._rfb_credentials.password || |
|
971 !this._rfb_credentials.target) { |
|
972 var event = new CustomEvent("credentialsrequired", |
|
973 { detail: { types: ["username", "password", "target"] } }); |
|
974 this.dispatchEvent(event); |
|
975 return false; |
|
976 } |
|
977 |
|
978 var xvp_auth_str = String.fromCharCode(this._rfb_credentials.username.length) + |
|
979 String.fromCharCode(this._rfb_credentials.target.length) + |
|
980 this._rfb_credentials.username + |
|
981 this._rfb_credentials.target; |
|
982 this._sock.send_string(xvp_auth_str); |
|
983 this._rfb_auth_scheme = 2; |
|
984 return this._negotiate_authentication(); |
|
985 }, |
|
986 |
|
987 _negotiate_std_vnc_auth: function () { |
|
988 if (this._sock.rQwait("auth challenge", 16)) { return false; } |
|
989 |
|
990 if (!this._rfb_credentials.password) { |
|
991 var event = new CustomEvent("credentialsrequired", |
|
992 { detail: { types: ["password"] } }); |
|
993 this.dispatchEvent(event); |
|
994 return false; |
|
995 } |
|
996 |
|
997 // TODO(directxman12): make genDES not require an Array |
|
998 var challenge = Array.prototype.slice.call(this._sock.rQshiftBytes(16)); |
|
999 var response = RFB.genDES(this._rfb_credentials.password, challenge); |
|
1000 this._sock.send(response); |
|
1001 this._rfb_init_state = "SecurityResult"; |
|
1002 return true; |
|
1003 }, |
|
1004 |
|
1005 _negotiate_tight_tunnels: function (numTunnels) { |
|
1006 var clientSupportedTunnelTypes = { |
|
1007 0: { vendor: 'TGHT', signature: 'NOTUNNEL' } |
|
1008 }; |
|
1009 var serverSupportedTunnelTypes = {}; |
|
1010 // receive tunnel capabilities |
|
1011 for (var i = 0; i < numTunnels; i++) { |
|
1012 var cap_code = this._sock.rQshift32(); |
|
1013 var cap_vendor = this._sock.rQshiftStr(4); |
|
1014 var cap_signature = this._sock.rQshiftStr(8); |
|
1015 serverSupportedTunnelTypes[cap_code] = { vendor: cap_vendor, signature: cap_signature }; |
|
1016 } |
|
1017 |
|
1018 // choose the notunnel type |
|
1019 if (serverSupportedTunnelTypes[0]) { |
|
1020 if (serverSupportedTunnelTypes[0].vendor != clientSupportedTunnelTypes[0].vendor || |
|
1021 serverSupportedTunnelTypes[0].signature != clientSupportedTunnelTypes[0].signature) { |
|
1022 return this._fail("Client's tunnel type had the incorrect " + |
|
1023 "vendor or signature"); |
|
1024 } |
|
1025 this._sock.send([0, 0, 0, 0]); // use NOTUNNEL |
|
1026 return false; // wait until we receive the sub auth count to continue |
|
1027 } else { |
|
1028 return this._fail("Server wanted tunnels, but doesn't support " + |
|
1029 "the notunnel type"); |
|
1030 } |
|
1031 }, |
|
1032 |
|
1033 _negotiate_tight_auth: function () { |
|
1034 if (!this._rfb_tightvnc) { // first pass, do the tunnel negotiation |
|
1035 if (this._sock.rQwait("num tunnels", 4)) { return false; } |
|
1036 var numTunnels = this._sock.rQshift32(); |
|
1037 if (numTunnels > 0 && this._sock.rQwait("tunnel capabilities", 16 * numTunnels, 4)) { return false; } |
|
1038 |
|
1039 this._rfb_tightvnc = true; |
|
1040 |
|
1041 if (numTunnels > 0) { |
|
1042 this._negotiate_tight_tunnels(numTunnels); |
|
1043 return false; // wait until we receive the sub auth to continue |
|
1044 } |
|
1045 } |
|
1046 |
|
1047 // second pass, do the sub-auth negotiation |
|
1048 if (this._sock.rQwait("sub auth count", 4)) { return false; } |
|
1049 var subAuthCount = this._sock.rQshift32(); |
|
1050 if (subAuthCount === 0) { // empty sub-auth list received means 'no auth' subtype selected |
|
1051 this._rfb_init_state = 'SecurityResult'; |
|
1052 return true; |
|
1053 } |
|
1054 |
|
1055 if (this._sock.rQwait("sub auth capabilities", 16 * subAuthCount, 4)) { return false; } |
|
1056 |
|
1057 var clientSupportedTypes = { |
|
1058 'STDVNOAUTH__': 1, |
|
1059 'STDVVNCAUTH_': 2 |
|
1060 }; |
|
1061 |
|
1062 var serverSupportedTypes = []; |
|
1063 |
|
1064 for (var i = 0; i < subAuthCount; i++) { |
|
1065 var capNum = this._sock.rQshift32(); |
|
1066 var capabilities = this._sock.rQshiftStr(12); |
|
1067 serverSupportedTypes.push(capabilities); |
|
1068 } |
|
1069 |
|
1070 for (var authType in clientSupportedTypes) { |
|
1071 if (serverSupportedTypes.indexOf(authType) != -1) { |
|
1072 this._sock.send([0, 0, 0, clientSupportedTypes[authType]]); |
|
1073 |
|
1074 switch (authType) { |
|
1075 case 'STDVNOAUTH__': // no auth |
|
1076 this._rfb_init_state = 'SecurityResult'; |
|
1077 return true; |
|
1078 case 'STDVVNCAUTH_': // VNC auth |
|
1079 this._rfb_auth_scheme = 2; |
|
1080 return this._init_msg(); |
|
1081 default: |
|
1082 return this._fail("Unsupported tiny auth scheme " + |
|
1083 "(scheme: " + authType + ")"); |
|
1084 } |
|
1085 } |
|
1086 } |
|
1087 |
|
1088 return this._fail("No supported sub-auth types!"); |
|
1089 }, |
|
1090 |
|
1091 _negotiate_authentication: function () { |
|
1092 switch (this._rfb_auth_scheme) { |
|
1093 case 0: // connection failed |
|
1094 return this._handle_security_failure("authentication scheme"); |
|
1095 |
|
1096 case 1: // no auth |
|
1097 if (this._rfb_version >= 3.8) { |
|
1098 this._rfb_init_state = 'SecurityResult'; |
|
1099 return true; |
|
1100 } |
|
1101 this._rfb_init_state = 'ClientInitialisation'; |
|
1102 return this._init_msg(); |
|
1103 |
|
1104 case 22: // XVP auth |
|
1105 return this._negotiate_xvp_auth(); |
|
1106 |
|
1107 case 2: // VNC authentication |
|
1108 return this._negotiate_std_vnc_auth(); |
|
1109 |
|
1110 case 16: // TightVNC Security Type |
|
1111 return this._negotiate_tight_auth(); |
|
1112 |
|
1113 default: |
|
1114 return this._fail("Unsupported auth scheme (scheme: " + |
|
1115 this._rfb_auth_scheme + ")"); |
|
1116 } |
|
1117 }, |
|
1118 |
|
1119 _handle_security_result: function () { |
|
1120 if (this._sock.rQwait('VNC auth response ', 4)) { return false; } |
|
1121 |
|
1122 let status = this._sock.rQshift32(); |
|
1123 |
|
1124 if (status === 0) { // OK |
|
1125 this._rfb_init_state = 'ClientInitialisation'; |
|
1126 Log.Debug('Authentication OK'); |
|
1127 return this._init_msg(); |
|
1128 } else { |
|
1129 if (this._rfb_version >= 3.8) { |
|
1130 return this._handle_security_failure("security result", status); |
|
1131 } else { |
|
1132 let event = new CustomEvent("securityfailure", |
|
1133 { detail: { status: status } }); |
|
1134 this.dispatchEvent(event); |
|
1135 |
|
1136 return this._fail("Security handshake failed"); |
|
1137 } |
|
1138 } |
|
1139 }, |
|
1140 |
|
1141 _negotiate_server_init: function () { |
|
1142 if (this._sock.rQwait("server initialization", 24)) { return false; } |
|
1143 |
|
1144 /* Screen size */ |
|
1145 var width = this._sock.rQshift16(); |
|
1146 var height = this._sock.rQshift16(); |
|
1147 |
|
1148 /* PIXEL_FORMAT */ |
|
1149 var bpp = this._sock.rQshift8(); |
|
1150 var depth = this._sock.rQshift8(); |
|
1151 var big_endian = this._sock.rQshift8(); |
|
1152 var true_color = this._sock.rQshift8(); |
|
1153 |
|
1154 var red_max = this._sock.rQshift16(); |
|
1155 var green_max = this._sock.rQshift16(); |
|
1156 var blue_max = this._sock.rQshift16(); |
|
1157 var red_shift = this._sock.rQshift8(); |
|
1158 var green_shift = this._sock.rQshift8(); |
|
1159 var blue_shift = this._sock.rQshift8(); |
|
1160 this._sock.rQskipBytes(3); // padding |
|
1161 |
|
1162 // NB(directxman12): we don't want to call any callbacks or print messages until |
|
1163 // *after* we're past the point where we could backtrack |
|
1164 |
|
1165 /* Connection name/title */ |
|
1166 var name_length = this._sock.rQshift32(); |
|
1167 if (this._sock.rQwait('server init name', name_length, 24)) { return false; } |
|
1168 this._fb_name = decodeUTF8(this._sock.rQshiftStr(name_length)); |
|
1169 |
|
1170 if (this._rfb_tightvnc) { |
|
1171 if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; } |
|
1172 // In TightVNC mode, ServerInit message is extended |
|
1173 var numServerMessages = this._sock.rQshift16(); |
|
1174 var numClientMessages = this._sock.rQshift16(); |
|
1175 var numEncodings = this._sock.rQshift16(); |
|
1176 this._sock.rQskipBytes(2); // padding |
|
1177 |
|
1178 var totalMessagesLength = (numServerMessages + numClientMessages + numEncodings) * 16; |
|
1179 if (this._sock.rQwait('TightVNC extended server init header', totalMessagesLength, 32 + name_length)) { return false; } |
|
1180 |
|
1181 // we don't actually do anything with the capability information that TIGHT sends, |
|
1182 // so we just skip the all of this. |
|
1183 |
|
1184 // TIGHT server message capabilities |
|
1185 this._sock.rQskipBytes(16 * numServerMessages); |
|
1186 |
|
1187 // TIGHT client message capabilities |
|
1188 this._sock.rQskipBytes(16 * numClientMessages); |
|
1189 |
|
1190 // TIGHT encoding capabilities |
|
1191 this._sock.rQskipBytes(16 * numEncodings); |
|
1192 } |
|
1193 |
|
1194 // NB(directxman12): these are down here so that we don't run them multiple times |
|
1195 // if we backtrack |
|
1196 Log.Info("Screen: " + width + "x" + height + |
|
1197 ", bpp: " + bpp + ", depth: " + depth + |
|
1198 ", big_endian: " + big_endian + |
|
1199 ", true_color: " + true_color + |
|
1200 ", red_max: " + red_max + |
|
1201 ", green_max: " + green_max + |
|
1202 ", blue_max: " + blue_max + |
|
1203 ", red_shift: " + red_shift + |
|
1204 ", green_shift: " + green_shift + |
|
1205 ", blue_shift: " + blue_shift); |
|
1206 |
|
1207 if (big_endian !== 0) { |
|
1208 Log.Warn("Server native endian is not little endian"); |
|
1209 } |
|
1210 |
|
1211 if (red_shift !== 16) { |
|
1212 Log.Warn("Server native red-shift is not 16"); |
|
1213 } |
|
1214 |
|
1215 if (blue_shift !== 0) { |
|
1216 Log.Warn("Server native blue-shift is not 0"); |
|
1217 } |
|
1218 |
|
1219 // we're past the point where we could backtrack, so it's safe to call this |
|
1220 var event = new CustomEvent("desktopname", |
|
1221 { detail: { name: this._fb_name } }); |
|
1222 this.dispatchEvent(event); |
|
1223 |
|
1224 this._resize(width, height); |
|
1225 |
|
1226 if (!this._viewOnly) { this._keyboard.grab(); } |
|
1227 if (!this._viewOnly) { this._mouse.grab(); } |
|
1228 |
|
1229 this._fb_depth = 24; |
|
1230 |
|
1231 if (this._fb_name === "Intel(r) AMT KVM") { |
|
1232 Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode."); |
|
1233 this._fb_depth = 8; |
|
1234 } else if (this._fb_name === "MBSE BrewBoard") { |
|
1235 Log.Warn("MBSE BrewBoard only supports 8 bit depths. Using low color mode."); |
|
1236 this._fb_depth = 8; |
|
1237 } |
|
1238 |
|
1239 RFB.messages.pixelFormat(this._sock, this._fb_depth, true); |
|
1240 this._sendEncodings(); |
|
1241 RFB.messages.fbUpdateRequest(this._sock, false, 0, 0, this._fb_width, this._fb_height); |
|
1242 |
|
1243 this._timing.fbu_rt_start = (new Date()).getTime(); |
|
1244 this._timing.pixels = 0; |
|
1245 |
|
1246 // Cursor will be server side until the server decides to honor |
|
1247 // our request and send over the cursor image |
|
1248 this._display.disableLocalCursor(); |
|
1249 |
|
1250 this._updateConnectionState('connected'); |
|
1251 return true; |
|
1252 }, |
|
1253 |
|
1254 _sendEncodings: function () { |
|
1255 var encs = []; |
|
1256 |
|
1257 // In preference order |
|
1258 encs.push(encodings.encodingCopyRect); |
|
1259 // Only supported with full depth support |
|
1260 if (this._fb_depth == 24) { |
|
1261 encs.push(encodings.encodingTight); |
|
1262 encs.push(encodings.encodingHextile); |
|
1263 encs.push(encodings.encodingRRE); |
|
1264 } |
|
1265 encs.push(encodings.encodingRaw); |
|
1266 |
|
1267 // Psuedo-encoding settings |
|
1268 encs.push(encodings.pseudoEncodingTightPNG); |
|
1269 encs.push(encodings.pseudoEncodingQualityLevel0 + 6); |
|
1270 encs.push(encodings.pseudoEncodingCompressLevel0 + 2); |
|
1271 |
|
1272 encs.push(encodings.pseudoEncodingDesktopSize); |
|
1273 encs.push(encodings.pseudoEncodingLastRect); |
|
1274 encs.push(encodings.pseudoEncodingQEMUExtendedKeyEvent); |
|
1275 encs.push(encodings.pseudoEncodingExtendedDesktopSize); |
|
1276 encs.push(encodings.pseudoEncodingXvp); |
|
1277 encs.push(encodings.pseudoEncodingFence); |
|
1278 encs.push(encodings.pseudoEncodingContinuousUpdates); |
|
1279 |
|
1280 if (supportsCursorURIs() && |
|
1281 !isTouchDevice && this._fb_depth == 24) { |
|
1282 encs.push(encodings.pseudoEncodingCursor); |
|
1283 } |
|
1284 |
|
1285 RFB.messages.clientEncodings(this._sock, encs); |
|
1286 }, |
|
1287 |
|
1288 /* RFB protocol initialization states: |
|
1289 * ProtocolVersion |
|
1290 * Security |
|
1291 * Authentication |
|
1292 * SecurityResult |
|
1293 * ClientInitialization - not triggered by server message |
|
1294 * ServerInitialization |
|
1295 */ |
|
1296 _init_msg: function () { |
|
1297 switch (this._rfb_init_state) { |
|
1298 case 'ProtocolVersion': |
|
1299 return this._negotiate_protocol_version(); |
|
1300 |
|
1301 case 'Security': |
|
1302 return this._negotiate_security(); |
|
1303 |
|
1304 case 'Authentication': |
|
1305 return this._negotiate_authentication(); |
|
1306 |
|
1307 case 'SecurityResult': |
|
1308 return this._handle_security_result(); |
|
1309 |
|
1310 case 'ClientInitialisation': |
|
1311 this._sock.send([this._shared ? 1 : 0]); // ClientInitialisation |
|
1312 this._rfb_init_state = 'ServerInitialisation'; |
|
1313 return true; |
|
1314 |
|
1315 case 'ServerInitialisation': |
|
1316 return this._negotiate_server_init(); |
|
1317 |
|
1318 default: |
|
1319 return this._fail("Unknown init state (state: " + |
|
1320 this._rfb_init_state + ")"); |
|
1321 } |
|
1322 }, |
|
1323 |
|
1324 _handle_set_colour_map_msg: function () { |
|
1325 Log.Debug("SetColorMapEntries"); |
|
1326 |
|
1327 return this._fail("Unexpected SetColorMapEntries message"); |
|
1328 }, |
|
1329 |
|
1330 _handle_server_cut_text: function () { |
|
1331 Log.Debug("ServerCutText"); |
|
1332 |
|
1333 if (this._sock.rQwait("ServerCutText header", 7, 1)) { return false; } |
|
1334 this._sock.rQskipBytes(3); // Padding |
|
1335 var length = this._sock.rQshift32(); |
|
1336 if (this._sock.rQwait("ServerCutText", length, 8)) { return false; } |
|
1337 |
|
1338 var text = this._sock.rQshiftStr(length); |
|
1339 |
|
1340 if (this._viewOnly) { return true; } |
|
1341 |
|
1342 var event = new CustomEvent("clipboard", |
|
1343 { detail: { text: text } }); |
|
1344 this.dispatchEvent(event); |
|
1345 |
|
1346 return true; |
|
1347 }, |
|
1348 |
|
1349 _handle_server_fence_msg: function() { |
|
1350 if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; } |
|
1351 this._sock.rQskipBytes(3); // Padding |
|
1352 var flags = this._sock.rQshift32(); |
|
1353 var length = this._sock.rQshift8(); |
|
1354 |
|
1355 if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; } |
|
1356 |
|
1357 if (length > 64) { |
|
1358 Log.Warn("Bad payload length (" + length + ") in fence response"); |
|
1359 length = 64; |
|
1360 } |
|
1361 |
|
1362 var payload = this._sock.rQshiftStr(length); |
|
1363 |
|
1364 this._supportsFence = true; |
|
1365 |
|
1366 /* |
|
1367 * Fence flags |
|
1368 * |
|
1369 * (1<<0) - BlockBefore |
|
1370 * (1<<1) - BlockAfter |
|
1371 * (1<<2) - SyncNext |
|
1372 * (1<<31) - Request |
|
1373 */ |
|
1374 |
|
1375 if (!(flags & (1<<31))) { |
|
1376 return this._fail("Unexpected fence response"); |
|
1377 } |
|
1378 |
|
1379 // Filter out unsupported flags |
|
1380 // FIXME: support syncNext |
|
1381 flags &= (1<<0) | (1<<1); |
|
1382 |
|
1383 // BlockBefore and BlockAfter are automatically handled by |
|
1384 // the fact that we process each incoming message |
|
1385 // synchronuosly. |
|
1386 RFB.messages.clientFence(this._sock, flags, payload); |
|
1387 |
|
1388 return true; |
|
1389 }, |
|
1390 |
|
1391 _handle_xvp_msg: function () { |
|
1392 if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; } |
|
1393 this._sock.rQskip8(); // Padding |
|
1394 var xvp_ver = this._sock.rQshift8(); |
|
1395 var xvp_msg = this._sock.rQshift8(); |
|
1396 |
|
1397 switch (xvp_msg) { |
|
1398 case 0: // XVP_FAIL |
|
1399 Log.Error("XVP Operation Failed"); |
|
1400 break; |
|
1401 case 1: // XVP_INIT |
|
1402 this._rfb_xvp_ver = xvp_ver; |
|
1403 Log.Info("XVP extensions enabled (version " + this._rfb_xvp_ver + ")"); |
|
1404 this._setCapability("power", true); |
|
1405 break; |
|
1406 default: |
|
1407 this._fail("Illegal server XVP message (msg: " + xvp_msg + ")"); |
|
1408 break; |
|
1409 } |
|
1410 |
|
1411 return true; |
|
1412 }, |
|
1413 |
|
1414 _normal_msg: function () { |
|
1415 var msg_type; |
|
1416 |
|
1417 if (this._FBU.rects > 0) { |
|
1418 msg_type = 0; |
|
1419 } else { |
|
1420 msg_type = this._sock.rQshift8(); |
|
1421 } |
|
1422 |
|
1423 switch (msg_type) { |
|
1424 case 0: // FramebufferUpdate |
|
1425 var ret = this._framebufferUpdate(); |
|
1426 if (ret && !this._enabledContinuousUpdates) { |
|
1427 RFB.messages.fbUpdateRequest(this._sock, true, 0, 0, |
|
1428 this._fb_width, this._fb_height); |
|
1429 } |
|
1430 return ret; |
|
1431 |
|
1432 case 1: // SetColorMapEntries |
|
1433 return this._handle_set_colour_map_msg(); |
|
1434 |
|
1435 case 2: // Bell |
|
1436 Log.Debug("Bell"); |
|
1437 var event = new CustomEvent("bell", { detail: {} }); |
|
1438 this.dispatchEvent(event); |
|
1439 return true; |
|
1440 |
|
1441 case 3: // ServerCutText |
|
1442 return this._handle_server_cut_text(); |
|
1443 |
|
1444 case 150: // EndOfContinuousUpdates |
|
1445 var first = !(this._supportsContinuousUpdates); |
|
1446 this._supportsContinuousUpdates = true; |
|
1447 this._enabledContinuousUpdates = false; |
|
1448 if (first) { |
|
1449 this._enabledContinuousUpdates = true; |
|
1450 this._updateContinuousUpdates(); |
|
1451 Log.Info("Enabling continuous updates."); |
|
1452 } else { |
|
1453 // FIXME: We need to send a framebufferupdaterequest here |
|
1454 // if we add support for turning off continuous updates |
|
1455 } |
|
1456 return true; |
|
1457 |
|
1458 case 248: // ServerFence |
|
1459 return this._handle_server_fence_msg(); |
|
1460 |
|
1461 case 250: // XVP |
|
1462 return this._handle_xvp_msg(); |
|
1463 |
|
1464 default: |
|
1465 this._fail("Unexpected server message (type " + msg_type + ")"); |
|
1466 Log.Debug("sock.rQslice(0, 30): " + this._sock.rQslice(0, 30)); |
|
1467 return true; |
|
1468 } |
|
1469 }, |
|
1470 |
|
1471 _onFlush: function() { |
|
1472 this._flushing = false; |
|
1473 // Resume processing |
|
1474 if (this._sock.rQlen() > 0) { |
|
1475 this._handle_message(); |
|
1476 } |
|
1477 }, |
|
1478 |
|
1479 _framebufferUpdate: function () { |
|
1480 var ret = true; |
|
1481 var now; |
|
1482 |
|
1483 if (this._FBU.rects === 0) { |
|
1484 if (this._sock.rQwait("FBU header", 3, 1)) { return false; } |
|
1485 this._sock.rQskip8(); // Padding |
|
1486 this._FBU.rects = this._sock.rQshift16(); |
|
1487 this._FBU.bytes = 0; |
|
1488 this._timing.cur_fbu = 0; |
|
1489 if (this._timing.fbu_rt_start > 0) { |
|
1490 now = (new Date()).getTime(); |
|
1491 Log.Info("First FBU latency: " + (now - this._timing.fbu_rt_start)); |
|
1492 } |
|
1493 |
|
1494 // Make sure the previous frame is fully rendered first |
|
1495 // to avoid building up an excessive queue |
|
1496 if (this._display.pending()) { |
|
1497 this._flushing = true; |
|
1498 this._display.flush(); |
|
1499 return false; |
|
1500 } |
|
1501 } |
|
1502 |
|
1503 while (this._FBU.rects > 0) { |
|
1504 if (this._rfb_connection_state !== 'connected') { return false; } |
|
1505 |
|
1506 if (this._sock.rQwait("FBU", this._FBU.bytes)) { return false; } |
|
1507 if (this._FBU.bytes === 0) { |
|
1508 if (this._sock.rQwait("rect header", 12)) { return false; } |
|
1509 /* New FramebufferUpdate */ |
|
1510 |
|
1511 var hdr = this._sock.rQshiftBytes(12); |
|
1512 this._FBU.x = (hdr[0] << 8) + hdr[1]; |
|
1513 this._FBU.y = (hdr[2] << 8) + hdr[3]; |
|
1514 this._FBU.width = (hdr[4] << 8) + hdr[5]; |
|
1515 this._FBU.height = (hdr[6] << 8) + hdr[7]; |
|
1516 this._FBU.encoding = parseInt((hdr[8] << 24) + (hdr[9] << 16) + |
|
1517 (hdr[10] << 8) + hdr[11], 10); |
|
1518 |
|
1519 if (!this._encHandlers[this._FBU.encoding]) { |
|
1520 this._fail("Unsupported encoding (encoding: " + |
|
1521 this._FBU.encoding + ")"); |
|
1522 return false; |
|
1523 } |
|
1524 } |
|
1525 |
|
1526 this._timing.last_fbu = (new Date()).getTime(); |
|
1527 |
|
1528 ret = this._encHandlers[this._FBU.encoding](); |
|
1529 |
|
1530 now = (new Date()).getTime(); |
|
1531 this._timing.cur_fbu += (now - this._timing.last_fbu); |
|
1532 |
|
1533 if (ret) { |
|
1534 if (!(this._FBU.encoding in this._encStats)) { |
|
1535 this._encStats[this._FBU.encoding] = [0, 0]; |
|
1536 } |
|
1537 this._encStats[this._FBU.encoding][0]++; |
|
1538 this._encStats[this._FBU.encoding][1]++; |
|
1539 this._timing.pixels += this._FBU.width * this._FBU.height; |
|
1540 } |
|
1541 |
|
1542 if (this._timing.pixels >= (this._fb_width * this._fb_height)) { |
|
1543 if ((this._FBU.width === this._fb_width && this._FBU.height === this._fb_height) || |
|
1544 this._timing.fbu_rt_start > 0) { |
|
1545 this._timing.full_fbu_total += this._timing.cur_fbu; |
|
1546 this._timing.full_fbu_cnt++; |
|
1547 Log.Info("Timing of full FBU, curr: " + |
|
1548 this._timing.cur_fbu + ", total: " + |
|
1549 this._timing.full_fbu_total + ", cnt: " + |
|
1550 this._timing.full_fbu_cnt + ", avg: " + |
|
1551 (this._timing.full_fbu_total / this._timing.full_fbu_cnt)); |
|
1552 } |
|
1553 |
|
1554 if (this._timing.fbu_rt_start > 0) { |
|
1555 var fbu_rt_diff = now - this._timing.fbu_rt_start; |
|
1556 this._timing.fbu_rt_total += fbu_rt_diff; |
|
1557 this._timing.fbu_rt_cnt++; |
|
1558 Log.Info("full FBU round-trip, cur: " + |
|
1559 fbu_rt_diff + ", total: " + |
|
1560 this._timing.fbu_rt_total + ", cnt: " + |
|
1561 this._timing.fbu_rt_cnt + ", avg: " + |
|
1562 (this._timing.fbu_rt_total / this._timing.fbu_rt_cnt)); |
|
1563 this._timing.fbu_rt_start = 0; |
|
1564 } |
|
1565 } |
|
1566 |
|
1567 if (!ret) { return ret; } // need more data |
|
1568 } |
|
1569 |
|
1570 this._display.flip(); |
|
1571 |
|
1572 return true; // We finished this FBU |
|
1573 }, |
|
1574 |
|
1575 _updateContinuousUpdates: function() { |
|
1576 if (!this._enabledContinuousUpdates) { return; } |
|
1577 |
|
1578 RFB.messages.enableContinuousUpdates(this._sock, true, 0, 0, |
|
1579 this._fb_width, this._fb_height); |
|
1580 }, |
|
1581 |
|
1582 _resize: function(width, height) { |
|
1583 this._fb_width = width; |
|
1584 this._fb_height = height; |
|
1585 |
|
1586 this._destBuff = new Uint8Array(this._fb_width * this._fb_height * 4); |
|
1587 |
|
1588 this._display.resize(this._fb_width, this._fb_height); |
|
1589 |
|
1590 // Adjust the visible viewport based on the new dimensions |
|
1591 this._updateClip(); |
|
1592 this._updateScale(); |
|
1593 |
|
1594 this._timing.fbu_rt_start = (new Date()).getTime(); |
|
1595 this._updateContinuousUpdates(); |
|
1596 }, |
|
1597 |
|
1598 _xvpOp: function (ver, op) { |
|
1599 if (this._rfb_xvp_ver < ver) { return; } |
|
1600 Log.Info("Sending XVP operation " + op + " (version " + ver + ")"); |
|
1601 RFB.messages.xvpOp(this._sock, ver, op); |
|
1602 }, |
|
1603 }; |
|
1604 |
|
1605 Object.assign(RFB.prototype, EventTargetMixin); |
|
1606 |
|
1607 // Class Methods |
|
1608 RFB.messages = { |
|
1609 keyEvent: function (sock, keysym, down) { |
|
1610 var buff = sock._sQ; |
|
1611 var offset = sock._sQlen; |
|
1612 |
|
1613 buff[offset] = 4; // msg-type |
|
1614 buff[offset + 1] = down; |
|
1615 |
|
1616 buff[offset + 2] = 0; |
|
1617 buff[offset + 3] = 0; |
|
1618 |
|
1619 buff[offset + 4] = (keysym >> 24); |
|
1620 buff[offset + 5] = (keysym >> 16); |
|
1621 buff[offset + 6] = (keysym >> 8); |
|
1622 buff[offset + 7] = keysym; |
|
1623 |
|
1624 sock._sQlen += 8; |
|
1625 sock.flush(); |
|
1626 }, |
|
1627 |
|
1628 QEMUExtendedKeyEvent: function (sock, keysym, down, keycode) { |
|
1629 function getRFBkeycode(xt_scancode) { |
|
1630 var upperByte = (keycode >> 8); |
|
1631 var lowerByte = (keycode & 0x00ff); |
|
1632 if (upperByte === 0xe0 && lowerByte < 0x7f) { |
|
1633 lowerByte = lowerByte | 0x80; |
|
1634 return lowerByte; |
|
1635 } |
|
1636 return xt_scancode; |
|
1637 } |
|
1638 |
|
1639 var buff = sock._sQ; |
|
1640 var offset = sock._sQlen; |
|
1641 |
|
1642 buff[offset] = 255; // msg-type |
|
1643 buff[offset + 1] = 0; // sub msg-type |
|
1644 |
|
1645 buff[offset + 2] = (down >> 8); |
|
1646 buff[offset + 3] = down; |
|
1647 |
|
1648 buff[offset + 4] = (keysym >> 24); |
|
1649 buff[offset + 5] = (keysym >> 16); |
|
1650 buff[offset + 6] = (keysym >> 8); |
|
1651 buff[offset + 7] = keysym; |
|
1652 |
|
1653 var RFBkeycode = getRFBkeycode(keycode); |
|
1654 |
|
1655 buff[offset + 8] = (RFBkeycode >> 24); |
|
1656 buff[offset + 9] = (RFBkeycode >> 16); |
|
1657 buff[offset + 10] = (RFBkeycode >> 8); |
|
1658 buff[offset + 11] = RFBkeycode; |
|
1659 |
|
1660 sock._sQlen += 12; |
|
1661 sock.flush(); |
|
1662 }, |
|
1663 |
|
1664 pointerEvent: function (sock, x, y, mask) { |
|
1665 var buff = sock._sQ; |
|
1666 var offset = sock._sQlen; |
|
1667 |
|
1668 buff[offset] = 5; // msg-type |
|
1669 |
|
1670 buff[offset + 1] = mask; |
|
1671 |
|
1672 buff[offset + 2] = x >> 8; |
|
1673 buff[offset + 3] = x; |
|
1674 |
|
1675 buff[offset + 4] = y >> 8; |
|
1676 buff[offset + 5] = y; |
|
1677 |
|
1678 sock._sQlen += 6; |
|
1679 sock.flush(); |
|
1680 }, |
|
1681 |
|
1682 // TODO(directxman12): make this unicode compatible? |
|
1683 clientCutText: function (sock, text) { |
|
1684 var buff = sock._sQ; |
|
1685 var offset = sock._sQlen; |
|
1686 |
|
1687 buff[offset] = 6; // msg-type |
|
1688 |
|
1689 buff[offset + 1] = 0; // padding |
|
1690 buff[offset + 2] = 0; // padding |
|
1691 buff[offset + 3] = 0; // padding |
|
1692 |
|
1693 var n = text.length; |
|
1694 |
|
1695 buff[offset + 4] = n >> 24; |
|
1696 buff[offset + 5] = n >> 16; |
|
1697 buff[offset + 6] = n >> 8; |
|
1698 buff[offset + 7] = n; |
|
1699 |
|
1700 for (var i = 0; i < n; i++) { |
|
1701 buff[offset + 8 + i] = text.charCodeAt(i); |
|
1702 } |
|
1703 |
|
1704 sock._sQlen += 8 + n; |
|
1705 sock.flush(); |
|
1706 }, |
|
1707 |
|
1708 setDesktopSize: function (sock, width, height, id, flags) { |
|
1709 var buff = sock._sQ; |
|
1710 var offset = sock._sQlen; |
|
1711 |
|
1712 buff[offset] = 251; // msg-type |
|
1713 buff[offset + 1] = 0; // padding |
|
1714 buff[offset + 2] = width >> 8; // width |
|
1715 buff[offset + 3] = width; |
|
1716 buff[offset + 4] = height >> 8; // height |
|
1717 buff[offset + 5] = height; |
|
1718 |
|
1719 buff[offset + 6] = 1; // number-of-screens |
|
1720 buff[offset + 7] = 0; // padding |
|
1721 |
|
1722 // screen array |
|
1723 buff[offset + 8] = id >> 24; // id |
|
1724 buff[offset + 9] = id >> 16; |
|
1725 buff[offset + 10] = id >> 8; |
|
1726 buff[offset + 11] = id; |
|
1727 buff[offset + 12] = 0; // x-position |
|
1728 buff[offset + 13] = 0; |
|
1729 buff[offset + 14] = 0; // y-position |
|
1730 buff[offset + 15] = 0; |
|
1731 buff[offset + 16] = width >> 8; // width |
|
1732 buff[offset + 17] = width; |
|
1733 buff[offset + 18] = height >> 8; // height |
|
1734 buff[offset + 19] = height; |
|
1735 buff[offset + 20] = flags >> 24; // flags |
|
1736 buff[offset + 21] = flags >> 16; |
|
1737 buff[offset + 22] = flags >> 8; |
|
1738 buff[offset + 23] = flags; |
|
1739 |
|
1740 sock._sQlen += 24; |
|
1741 sock.flush(); |
|
1742 }, |
|
1743 |
|
1744 clientFence: function (sock, flags, payload) { |
|
1745 var buff = sock._sQ; |
|
1746 var offset = sock._sQlen; |
|
1747 |
|
1748 buff[offset] = 248; // msg-type |
|
1749 |
|
1750 buff[offset + 1] = 0; // padding |
|
1751 buff[offset + 2] = 0; // padding |
|
1752 buff[offset + 3] = 0; // padding |
|
1753 |
|
1754 buff[offset + 4] = flags >> 24; // flags |
|
1755 buff[offset + 5] = flags >> 16; |
|
1756 buff[offset + 6] = flags >> 8; |
|
1757 buff[offset + 7] = flags; |
|
1758 |
|
1759 var n = payload.length; |
|
1760 |
|
1761 buff[offset + 8] = n; // length |
|
1762 |
|
1763 for (var i = 0; i < n; i++) { |
|
1764 buff[offset + 9 + i] = payload.charCodeAt(i); |
|
1765 } |
|
1766 |
|
1767 sock._sQlen += 9 + n; |
|
1768 sock.flush(); |
|
1769 }, |
|
1770 |
|
1771 enableContinuousUpdates: function (sock, enable, x, y, width, height) { |
|
1772 var buff = sock._sQ; |
|
1773 var offset = sock._sQlen; |
|
1774 |
|
1775 buff[offset] = 150; // msg-type |
|
1776 buff[offset + 1] = enable; // enable-flag |
|
1777 |
|
1778 buff[offset + 2] = x >> 8; // x |
|
1779 buff[offset + 3] = x; |
|
1780 buff[offset + 4] = y >> 8; // y |
|
1781 buff[offset + 5] = y; |
|
1782 buff[offset + 6] = width >> 8; // width |
|
1783 buff[offset + 7] = width; |
|
1784 buff[offset + 8] = height >> 8; // height |
|
1785 buff[offset + 9] = height; |
|
1786 |
|
1787 sock._sQlen += 10; |
|
1788 sock.flush(); |
|
1789 }, |
|
1790 |
|
1791 pixelFormat: function (sock, depth, true_color) { |
|
1792 var buff = sock._sQ; |
|
1793 var offset = sock._sQlen; |
|
1794 |
|
1795 var bpp, bits; |
|
1796 |
|
1797 if (depth > 16) { |
|
1798 bpp = 32; |
|
1799 } else if (depth > 8) { |
|
1800 bpp = 16; |
|
1801 } else { |
|
1802 bpp = 8; |
|
1803 } |
|
1804 |
|
1805 bits = Math.floor(depth/3); |
|
1806 |
|
1807 buff[offset] = 0; // msg-type |
|
1808 |
|
1809 buff[offset + 1] = 0; // padding |
|
1810 buff[offset + 2] = 0; // padding |
|
1811 buff[offset + 3] = 0; // padding |
|
1812 |
|
1813 buff[offset + 4] = bpp; // bits-per-pixel |
|
1814 buff[offset + 5] = depth; // depth |
|
1815 buff[offset + 6] = 0; // little-endian |
|
1816 buff[offset + 7] = true_color ? 1 : 0; // true-color |
|
1817 |
|
1818 buff[offset + 8] = 0; // red-max |
|
1819 buff[offset + 10] = 0; // green-max |
|
1820 buff[offset + 12] = 0; // blue-max |
|
1821 |
|
1822 if (depth == 8) { |
|
1823 buff[offset + 9] = 7; // red-max |
|
1824 buff[offset + 11] = 7; // green-max |
|
1825 buff[offset + 13] = 3; // blue-max |
|
1826 buff[offset + 14] = 5; // red-shift |
|
1827 buff[offset + 15] = 2; // green-shift |
|
1828 buff[offset + 16] = 0; // blue-shift |
|
1829 } else { |
|
1830 buff[offset + 9] = (1 << bits) - 1; // red-max |
|
1831 buff[offset + 11] = (1 << bits) - 1; // green-max |
|
1832 buff[offset + 13] = (1 << bits) - 1; // blue-max |
|
1833 buff[offset + 14] = bits * 2; // red-shift |
|
1834 buff[offset + 15] = bits * 1; // green-shift |
|
1835 buff[offset + 16] = bits * 0; // blue-shift |
|
1836 } |
|
1837 |
|
1838 buff[offset + 17] = 0; // padding |
|
1839 buff[offset + 18] = 0; // padding |
|
1840 buff[offset + 19] = 0; // padding |
|
1841 |
|
1842 sock._sQlen += 20; |
|
1843 sock.flush(); |
|
1844 }, |
|
1845 |
|
1846 clientEncodings: function (sock, encodings) { |
|
1847 var buff = sock._sQ; |
|
1848 var offset = sock._sQlen; |
|
1849 |
|
1850 buff[offset] = 2; // msg-type |
|
1851 buff[offset + 1] = 0; // padding |
|
1852 |
|
1853 buff[offset + 2] = encodings.length >> 8; |
|
1854 buff[offset + 3] = encodings.length; |
|
1855 |
|
1856 var i, j = offset + 4; |
|
1857 for (i = 0; i < encodings.length; i++) { |
|
1858 var enc = encodings[i]; |
|
1859 buff[j] = enc >> 24; |
|
1860 buff[j + 1] = enc >> 16; |
|
1861 buff[j + 2] = enc >> 8; |
|
1862 buff[j + 3] = enc; |
|
1863 |
|
1864 j += 4; |
|
1865 } |
|
1866 |
|
1867 sock._sQlen += j - offset; |
|
1868 sock.flush(); |
|
1869 }, |
|
1870 |
|
1871 fbUpdateRequest: function (sock, incremental, x, y, w, h) { |
|
1872 var buff = sock._sQ; |
|
1873 var offset = sock._sQlen; |
|
1874 |
|
1875 if (typeof(x) === "undefined") { x = 0; } |
|
1876 if (typeof(y) === "undefined") { y = 0; } |
|
1877 |
|
1878 buff[offset] = 3; // msg-type |
|
1879 buff[offset + 1] = incremental ? 1 : 0; |
|
1880 |
|
1881 buff[offset + 2] = (x >> 8) & 0xFF; |
|
1882 buff[offset + 3] = x & 0xFF; |
|
1883 |
|
1884 buff[offset + 4] = (y >> 8) & 0xFF; |
|
1885 buff[offset + 5] = y & 0xFF; |
|
1886 |
|
1887 buff[offset + 6] = (w >> 8) & 0xFF; |
|
1888 buff[offset + 7] = w & 0xFF; |
|
1889 |
|
1890 buff[offset + 8] = (h >> 8) & 0xFF; |
|
1891 buff[offset + 9] = h & 0xFF; |
|
1892 |
|
1893 sock._sQlen += 10; |
|
1894 sock.flush(); |
|
1895 }, |
|
1896 |
|
1897 xvpOp: function (sock, ver, op) { |
|
1898 var buff = sock._sQ; |
|
1899 var offset = sock._sQlen; |
|
1900 |
|
1901 buff[offset] = 250; // msg-type |
|
1902 buff[offset + 1] = 0; // padding |
|
1903 |
|
1904 buff[offset + 2] = ver; |
|
1905 buff[offset + 3] = op; |
|
1906 |
|
1907 sock._sQlen += 4; |
|
1908 sock.flush(); |
|
1909 }, |
|
1910 }; |
|
1911 |
|
1912 RFB.genDES = function (password, challenge) { |
|
1913 var passwd = []; |
|
1914 for (var i = 0; i < password.length; i++) { |
|
1915 passwd.push(password.charCodeAt(i)); |
|
1916 } |
|
1917 return (new DES(passwd)).encrypt(challenge); |
|
1918 }; |
|
1919 |
|
1920 RFB.encodingHandlers = { |
|
1921 RAW: function () { |
|
1922 if (this._FBU.lines === 0) { |
|
1923 this._FBU.lines = this._FBU.height; |
|
1924 } |
|
1925 |
|
1926 var pixelSize = this._fb_depth == 8 ? 1 : 4; |
|
1927 this._FBU.bytes = this._FBU.width * pixelSize; // at least a line |
|
1928 if (this._sock.rQwait("RAW", this._FBU.bytes)) { return false; } |
|
1929 var cur_y = this._FBU.y + (this._FBU.height - this._FBU.lines); |
|
1930 var curr_height = Math.min(this._FBU.lines, |
|
1931 Math.floor(this._sock.rQlen() / (this._FBU.width * pixelSize))); |
|
1932 var data = this._sock.get_rQ(); |
|
1933 var index = this._sock.get_rQi(); |
|
1934 if (this._fb_depth == 8) { |
|
1935 var pixels = this._FBU.width * curr_height |
|
1936 var newdata = new Uint8Array(pixels * 4); |
|
1937 var i; |
|
1938 for (i = 0;i < pixels;i++) { |
|
1939 //newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3; |
|
1940 //newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x3) * 255 / 3; |
|
1941 //newdata[i * 4 + 2] = ((data[index + i] >> 4) & 0x3) * 255 / 3; |
|
1942 // Convert 8 bit RGB332 color to internal RGB888. |
|
1943 newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3; // blue |
|
1944 newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x7) * 255 / 7; // green |
|
1945 newdata[i * 4 + 2] = ((data[index + i] >> 5) & 0x7) * 255 / 7; // red |
|
1946 newdata[i * 4 + 4] = 0; |
|
1947 } |
|
1948 data = newdata; |
|
1949 index = 0; |
|
1950 } |
|
1951 this._display.blitImage(this._FBU.x, cur_y, this._FBU.width, |
|
1952 curr_height, data, index); |
|
1953 this._sock.rQskipBytes(this._FBU.width * curr_height * pixelSize); |
|
1954 this._FBU.lines -= curr_height; |
|
1955 |
|
1956 if (this._FBU.lines > 0) { |
|
1957 this._FBU.bytes = this._FBU.width * pixelSize; // At least another line |
|
1958 } else { |
|
1959 this._FBU.rects--; |
|
1960 this._FBU.bytes = 0; |
|
1961 } |
|
1962 |
|
1963 return true; |
|
1964 }, |
|
1965 |
|
1966 COPYRECT: function () { |
|
1967 this._FBU.bytes = 4; |
|
1968 if (this._sock.rQwait("COPYRECT", 4)) { return false; } |
|
1969 this._display.copyImage(this._sock.rQshift16(), this._sock.rQshift16(), |
|
1970 this._FBU.x, this._FBU.y, this._FBU.width, |
|
1971 this._FBU.height); |
|
1972 |
|
1973 this._FBU.rects--; |
|
1974 this._FBU.bytes = 0; |
|
1975 return true; |
|
1976 }, |
|
1977 |
|
1978 RRE: function () { |
|
1979 var color; |
|
1980 if (this._FBU.subrects === 0) { |
|
1981 this._FBU.bytes = 4 + 4; |
|
1982 if (this._sock.rQwait("RRE", 4 + 4)) { return false; } |
|
1983 this._FBU.subrects = this._sock.rQshift32(); |
|
1984 color = this._sock.rQshiftBytes(4); // Background |
|
1985 this._display.fillRect(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, color); |
|
1986 } |
|
1987 |
|
1988 while (this._FBU.subrects > 0 && this._sock.rQlen() >= (4 + 8)) { |
|
1989 color = this._sock.rQshiftBytes(4); |
|
1990 var x = this._sock.rQshift16(); |
|
1991 var y = this._sock.rQshift16(); |
|
1992 var width = this._sock.rQshift16(); |
|
1993 var height = this._sock.rQshift16(); |
|
1994 this._display.fillRect(this._FBU.x + x, this._FBU.y + y, width, height, color); |
|
1995 this._FBU.subrects--; |
|
1996 } |
|
1997 |
|
1998 if (this._FBU.subrects > 0) { |
|
1999 var chunk = Math.min(this._rre_chunk_sz, this._FBU.subrects); |
|
2000 this._FBU.bytes = (4 + 8) * chunk; |
|
2001 } else { |
|
2002 this._FBU.rects--; |
|
2003 this._FBU.bytes = 0; |
|
2004 } |
|
2005 |
|
2006 return true; |
|
2007 }, |
|
2008 |
|
2009 HEXTILE: function () { |
|
2010 var rQ = this._sock.get_rQ(); |
|
2011 var rQi = this._sock.get_rQi(); |
|
2012 |
|
2013 if (this._FBU.tiles === 0) { |
|
2014 this._FBU.tiles_x = Math.ceil(this._FBU.width / 16); |
|
2015 this._FBU.tiles_y = Math.ceil(this._FBU.height / 16); |
|
2016 this._FBU.total_tiles = this._FBU.tiles_x * this._FBU.tiles_y; |
|
2017 this._FBU.tiles = this._FBU.total_tiles; |
|
2018 } |
|
2019 |
|
2020 while (this._FBU.tiles > 0) { |
|
2021 this._FBU.bytes = 1; |
|
2022 if (this._sock.rQwait("HEXTILE subencoding", this._FBU.bytes)) { return false; } |
|
2023 var subencoding = rQ[rQi]; // Peek |
|
2024 if (subencoding > 30) { // Raw |
|
2025 this._fail("Illegal hextile subencoding (subencoding: " + |
|
2026 subencoding + ")"); |
|
2027 return false; |
|
2028 } |
|
2029 |
|
2030 var subrects = 0; |
|
2031 var curr_tile = this._FBU.total_tiles - this._FBU.tiles; |
|
2032 var tile_x = curr_tile % this._FBU.tiles_x; |
|
2033 var tile_y = Math.floor(curr_tile / this._FBU.tiles_x); |
|
2034 var x = this._FBU.x + tile_x * 16; |
|
2035 var y = this._FBU.y + tile_y * 16; |
|
2036 var w = Math.min(16, (this._FBU.x + this._FBU.width) - x); |
|
2037 var h = Math.min(16, (this._FBU.y + this._FBU.height) - y); |
|
2038 |
|
2039 // Figure out how much we are expecting |
|
2040 if (subencoding & 0x01) { // Raw |
|
2041 this._FBU.bytes += w * h * 4; |
|
2042 } else { |
|
2043 if (subencoding & 0x02) { // Background |
|
2044 this._FBU.bytes += 4; |
|
2045 } |
|
2046 if (subencoding & 0x04) { // Foreground |
|
2047 this._FBU.bytes += 4; |
|
2048 } |
|
2049 if (subencoding & 0x08) { // AnySubrects |
|
2050 this._FBU.bytes++; // Since we aren't shifting it off |
|
2051 if (this._sock.rQwait("hextile subrects header", this._FBU.bytes)) { return false; } |
|
2052 subrects = rQ[rQi + this._FBU.bytes - 1]; // Peek |
|
2053 if (subencoding & 0x10) { // SubrectsColoured |
|
2054 this._FBU.bytes += subrects * (4 + 2); |
|
2055 } else { |
|
2056 this._FBU.bytes += subrects * 2; |
|
2057 } |
|
2058 } |
|
2059 } |
|
2060 |
|
2061 if (this._sock.rQwait("hextile", this._FBU.bytes)) { return false; } |
|
2062 |
|
2063 // We know the encoding and have a whole tile |
|
2064 this._FBU.subencoding = rQ[rQi]; |
|
2065 rQi++; |
|
2066 if (this._FBU.subencoding === 0) { |
|
2067 if (this._FBU.lastsubencoding & 0x01) { |
|
2068 // Weird: ignore blanks are RAW |
|
2069 Log.Debug(" Ignoring blank after RAW"); |
|
2070 } else { |
|
2071 this._display.fillRect(x, y, w, h, this._FBU.background); |
|
2072 } |
|
2073 } else if (this._FBU.subencoding & 0x01) { // Raw |
|
2074 this._display.blitImage(x, y, w, h, rQ, rQi); |
|
2075 rQi += this._FBU.bytes - 1; |
|
2076 } else { |
|
2077 if (this._FBU.subencoding & 0x02) { // Background |
|
2078 this._FBU.background = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; |
|
2079 rQi += 4; |
|
2080 } |
|
2081 if (this._FBU.subencoding & 0x04) { // Foreground |
|
2082 this._FBU.foreground = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; |
|
2083 rQi += 4; |
|
2084 } |
|
2085 |
|
2086 this._display.startTile(x, y, w, h, this._FBU.background); |
|
2087 if (this._FBU.subencoding & 0x08) { // AnySubrects |
|
2088 subrects = rQ[rQi]; |
|
2089 rQi++; |
|
2090 |
|
2091 for (var s = 0; s < subrects; s++) { |
|
2092 var color; |
|
2093 if (this._FBU.subencoding & 0x10) { // SubrectsColoured |
|
2094 color = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]]; |
|
2095 rQi += 4; |
|
2096 } else { |
|
2097 color = this._FBU.foreground; |
|
2098 } |
|
2099 var xy = rQ[rQi]; |
|
2100 rQi++; |
|
2101 var sx = (xy >> 4); |
|
2102 var sy = (xy & 0x0f); |
|
2103 |
|
2104 var wh = rQ[rQi]; |
|
2105 rQi++; |
|
2106 var sw = (wh >> 4) + 1; |
|
2107 var sh = (wh & 0x0f) + 1; |
|
2108 |
|
2109 this._display.subTile(sx, sy, sw, sh, color); |
|
2110 } |
|
2111 } |
|
2112 this._display.finishTile(); |
|
2113 } |
|
2114 this._sock.set_rQi(rQi); |
|
2115 this._FBU.lastsubencoding = this._FBU.subencoding; |
|
2116 this._FBU.bytes = 0; |
|
2117 this._FBU.tiles--; |
|
2118 } |
|
2119 |
|
2120 if (this._FBU.tiles === 0) { |
|
2121 this._FBU.rects--; |
|
2122 } |
|
2123 |
|
2124 return true; |
|
2125 }, |
|
2126 |
|
2127 TIGHT: function () { |
|
2128 this._FBU.bytes = 1; // compression-control byte |
|
2129 if (this._sock.rQwait("TIGHT compression-control", this._FBU.bytes)) { return false; } |
|
2130 |
|
2131 var checksum = function (data) { |
|
2132 var sum = 0; |
|
2133 for (var i = 0; i < data.length; i++) { |
|
2134 sum += data[i]; |
|
2135 if (sum > 65536) sum -= 65536; |
|
2136 } |
|
2137 return sum; |
|
2138 }; |
|
2139 |
|
2140 var resetStreams = 0; |
|
2141 var streamId = -1; |
|
2142 var decompress = function (data, expected) { |
|
2143 for (var i = 0; i < 4; i++) { |
|
2144 if ((resetStreams >> i) & 1) { |
|
2145 this._FBU.zlibs[i].reset(); |
|
2146 Log.Info("Reset zlib stream " + i); |
|
2147 } |
|
2148 } |
|
2149 |
|
2150 //var uncompressed = this._FBU.zlibs[streamId].uncompress(data, 0); |
|
2151 var uncompressed = this._FBU.zlibs[streamId].inflate(data, true, expected); |
|
2152 /*if (uncompressed.status !== 0) { |
|
2153 Log.Error("Invalid data in zlib stream"); |
|
2154 }*/ |
|
2155 |
|
2156 //return uncompressed.data; |
|
2157 return uncompressed; |
|
2158 }.bind(this); |
|
2159 |
|
2160 var indexedToRGBX2Color = function (data, palette, width, height) { |
|
2161 // Convert indexed (palette based) image data to RGB |
|
2162 // TODO: reduce number of calculations inside loop |
|
2163 var dest = this._destBuff; |
|
2164 var w = Math.floor((width + 7) / 8); |
|
2165 var w1 = Math.floor(width / 8); |
|
2166 |
|
2167 /*for (var y = 0; y < height; y++) { |
|
2168 var b, x, dp, sp; |
|
2169 var yoffset = y * width; |
|
2170 var ybitoffset = y * w; |
|
2171 var xoffset, targetbyte; |
|
2172 for (x = 0; x < w1; x++) { |
|
2173 xoffset = yoffset + x * 8; |
|
2174 targetbyte = data[ybitoffset + x]; |
|
2175 for (b = 7; b >= 0; b--) { |
|
2176 dp = (xoffset + 7 - b) * 3; |
|
2177 sp = (targetbyte >> b & 1) * 3; |
|
2178 dest[dp] = palette[sp]; |
|
2179 dest[dp + 1] = palette[sp + 1]; |
|
2180 dest[dp + 2] = palette[sp + 2]; |
|
2181 } |
|
2182 } |
|
2183 |
|
2184 xoffset = yoffset + x * 8; |
|
2185 targetbyte = data[ybitoffset + x]; |
|
2186 for (b = 7; b >= 8 - width % 8; b--) { |
|
2187 dp = (xoffset + 7 - b) * 3; |
|
2188 sp = (targetbyte >> b & 1) * 3; |
|
2189 dest[dp] = palette[sp]; |
|
2190 dest[dp + 1] = palette[sp + 1]; |
|
2191 dest[dp + 2] = palette[sp + 2]; |
|
2192 } |
|
2193 }*/ |
|
2194 |
|
2195 for (var y = 0; y < height; y++) { |
|
2196 var b, x, dp, sp; |
|
2197 for (x = 0; x < w1; x++) { |
|
2198 for (b = 7; b >= 0; b--) { |
|
2199 dp = (y * width + x * 8 + 7 - b) * 4; |
|
2200 sp = (data[y * w + x] >> b & 1) * 3; |
|
2201 dest[dp] = palette[sp]; |
|
2202 dest[dp + 1] = palette[sp + 1]; |
|
2203 dest[dp + 2] = palette[sp + 2]; |
|
2204 dest[dp + 3] = 255; |
|
2205 } |
|
2206 } |
|
2207 |
|
2208 for (b = 7; b >= 8 - width % 8; b--) { |
|
2209 dp = (y * width + x * 8 + 7 - b) * 4; |
|
2210 sp = (data[y * w + x] >> b & 1) * 3; |
|
2211 dest[dp] = palette[sp]; |
|
2212 dest[dp + 1] = palette[sp + 1]; |
|
2213 dest[dp + 2] = palette[sp + 2]; |
|
2214 dest[dp + 3] = 255; |
|
2215 } |
|
2216 } |
|
2217 |
|
2218 return dest; |
|
2219 }.bind(this); |
|
2220 |
|
2221 var indexedToRGBX = function (data, palette, width, height) { |
|
2222 // Convert indexed (palette based) image data to RGB |
|
2223 var dest = this._destBuff; |
|
2224 var total = width * height * 4; |
|
2225 for (var i = 0, j = 0; i < total; i += 4, j++) { |
|
2226 var sp = data[j] * 3; |
|
2227 dest[i] = palette[sp]; |
|
2228 dest[i + 1] = palette[sp + 1]; |
|
2229 dest[i + 2] = palette[sp + 2]; |
|
2230 dest[i + 3] = 255; |
|
2231 } |
|
2232 |
|
2233 return dest; |
|
2234 }.bind(this); |
|
2235 |
|
2236 var rQi = this._sock.get_rQi(); |
|
2237 var rQ = this._sock.rQwhole(); |
|
2238 var cmode, data; |
|
2239 var cl_header, cl_data; |
|
2240 |
|
2241 var handlePalette = function () { |
|
2242 var numColors = rQ[rQi + 2] + 1; |
|
2243 var paletteSize = numColors * 3; |
|
2244 this._FBU.bytes += paletteSize; |
|
2245 if (this._sock.rQwait("TIGHT palette " + cmode, this._FBU.bytes)) { return false; } |
|
2246 |
|
2247 var bpp = (numColors <= 2) ? 1 : 8; |
|
2248 var rowSize = Math.floor((this._FBU.width * bpp + 7) / 8); |
|
2249 var raw = false; |
|
2250 if (rowSize * this._FBU.height < 12) { |
|
2251 raw = true; |
|
2252 cl_header = 0; |
|
2253 cl_data = rowSize * this._FBU.height; |
|
2254 //clength = [0, rowSize * this._FBU.height]; |
|
2255 } else { |
|
2256 // begin inline getTightCLength (returning two-item arrays is bad for performance with GC) |
|
2257 var cl_offset = rQi + 3 + paletteSize; |
|
2258 cl_header = 1; |
|
2259 cl_data = 0; |
|
2260 cl_data += rQ[cl_offset] & 0x7f; |
|
2261 if (rQ[cl_offset] & 0x80) { |
|
2262 cl_header++; |
|
2263 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; |
|
2264 if (rQ[cl_offset + 1] & 0x80) { |
|
2265 cl_header++; |
|
2266 cl_data += rQ[cl_offset + 2] << 14; |
|
2267 } |
|
2268 } |
|
2269 // end inline getTightCLength |
|
2270 } |
|
2271 |
|
2272 this._FBU.bytes += cl_header + cl_data; |
|
2273 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } |
|
2274 |
|
2275 // Shift ctl, filter id, num colors, palette entries, and clength off |
|
2276 this._sock.rQskipBytes(3); |
|
2277 //var palette = this._sock.rQshiftBytes(paletteSize); |
|
2278 this._sock.rQshiftTo(this._paletteBuff, paletteSize); |
|
2279 this._sock.rQskipBytes(cl_header); |
|
2280 |
|
2281 if (raw) { |
|
2282 data = this._sock.rQshiftBytes(cl_data); |
|
2283 } else { |
|
2284 data = decompress(this._sock.rQshiftBytes(cl_data), rowSize * this._FBU.height); |
|
2285 } |
|
2286 |
|
2287 // Convert indexed (palette based) image data to RGB |
|
2288 var rgbx; |
|
2289 if (numColors == 2) { |
|
2290 rgbx = indexedToRGBX2Color(data, this._paletteBuff, this._FBU.width, this._FBU.height); |
|
2291 this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false); |
|
2292 } else { |
|
2293 rgbx = indexedToRGBX(data, this._paletteBuff, this._FBU.width, this._FBU.height); |
|
2294 this._display.blitRgbxImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, rgbx, 0, false); |
|
2295 } |
|
2296 |
|
2297 |
|
2298 return true; |
|
2299 }.bind(this); |
|
2300 |
|
2301 var handleCopy = function () { |
|
2302 var raw = false; |
|
2303 var uncompressedSize = this._FBU.width * this._FBU.height * 3; |
|
2304 if (uncompressedSize < 12) { |
|
2305 raw = true; |
|
2306 cl_header = 0; |
|
2307 cl_data = uncompressedSize; |
|
2308 } else { |
|
2309 // begin inline getTightCLength (returning two-item arrays is for peformance with GC) |
|
2310 var cl_offset = rQi + 1; |
|
2311 cl_header = 1; |
|
2312 cl_data = 0; |
|
2313 cl_data += rQ[cl_offset] & 0x7f; |
|
2314 if (rQ[cl_offset] & 0x80) { |
|
2315 cl_header++; |
|
2316 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; |
|
2317 if (rQ[cl_offset + 1] & 0x80) { |
|
2318 cl_header++; |
|
2319 cl_data += rQ[cl_offset + 2] << 14; |
|
2320 } |
|
2321 } |
|
2322 // end inline getTightCLength |
|
2323 } |
|
2324 this._FBU.bytes = 1 + cl_header + cl_data; |
|
2325 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } |
|
2326 |
|
2327 // Shift ctl, clength off |
|
2328 this._sock.rQshiftBytes(1 + cl_header); |
|
2329 |
|
2330 if (raw) { |
|
2331 data = this._sock.rQshiftBytes(cl_data); |
|
2332 } else { |
|
2333 data = decompress(this._sock.rQshiftBytes(cl_data), uncompressedSize); |
|
2334 } |
|
2335 |
|
2336 this._display.blitRgbImage(this._FBU.x, this._FBU.y, this._FBU.width, this._FBU.height, data, 0, false); |
|
2337 |
|
2338 return true; |
|
2339 }.bind(this); |
|
2340 |
|
2341 var ctl = this._sock.rQpeek8(); |
|
2342 |
|
2343 // Keep tight reset bits |
|
2344 resetStreams = ctl & 0xF; |
|
2345 |
|
2346 // Figure out filter |
|
2347 ctl = ctl >> 4; |
|
2348 streamId = ctl & 0x3; |
|
2349 |
|
2350 if (ctl === 0x08) cmode = "fill"; |
|
2351 else if (ctl === 0x09) cmode = "jpeg"; |
|
2352 else if (ctl === 0x0A) cmode = "png"; |
|
2353 else if (ctl & 0x04) cmode = "filter"; |
|
2354 else if (ctl < 0x04) cmode = "copy"; |
|
2355 else return this._fail("Illegal tight compression received (ctl: " + |
|
2356 ctl + ")"); |
|
2357 |
|
2358 switch (cmode) { |
|
2359 // fill use depth because TPIXELs drop the padding byte |
|
2360 case "fill": // TPIXEL |
|
2361 this._FBU.bytes += 3; |
|
2362 break; |
|
2363 case "jpeg": // max clength |
|
2364 this._FBU.bytes += 3; |
|
2365 break; |
|
2366 case "png": // max clength |
|
2367 this._FBU.bytes += 3; |
|
2368 break; |
|
2369 case "filter": // filter id + num colors if palette |
|
2370 this._FBU.bytes += 2; |
|
2371 break; |
|
2372 case "copy": |
|
2373 break; |
|
2374 } |
|
2375 |
|
2376 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } |
|
2377 |
|
2378 // Determine FBU.bytes |
|
2379 switch (cmode) { |
|
2380 case "fill": |
|
2381 // skip ctl byte |
|
2382 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); |
|
2383 this._sock.rQskipBytes(4); |
|
2384 break; |
|
2385 case "png": |
|
2386 case "jpeg": |
|
2387 // begin inline getTightCLength (returning two-item arrays is for peformance with GC) |
|
2388 var cl_offset = rQi + 1; |
|
2389 cl_header = 1; |
|
2390 cl_data = 0; |
|
2391 cl_data += rQ[cl_offset] & 0x7f; |
|
2392 if (rQ[cl_offset] & 0x80) { |
|
2393 cl_header++; |
|
2394 cl_data += (rQ[cl_offset + 1] & 0x7f) << 7; |
|
2395 if (rQ[cl_offset + 1] & 0x80) { |
|
2396 cl_header++; |
|
2397 cl_data += rQ[cl_offset + 2] << 14; |
|
2398 } |
|
2399 } |
|
2400 // end inline getTightCLength |
|
2401 this._FBU.bytes = 1 + cl_header + cl_data; // ctl + clength size + jpeg-data |
|
2402 if (this._sock.rQwait("TIGHT " + cmode, this._FBU.bytes)) { return false; } |
|
2403 |
|
2404 // We have everything, render it |
|
2405 this._sock.rQskipBytes(1 + cl_header); // shift off clt + compact length |
|
2406 data = this._sock.rQshiftBytes(cl_data); |
|
2407 this._display.imageRect(this._FBU.x, this._FBU.y, "image/" + cmode, data); |
|
2408 break; |
|
2409 case "filter": |
|
2410 var filterId = rQ[rQi + 1]; |
|
2411 if (filterId === 1) { |
|
2412 if (!handlePalette()) { return false; } |
|
2413 } else { |
|
2414 // Filter 0, Copy could be valid here, but servers don't send it as an explicit filter |
|
2415 // Filter 2, Gradient is valid but not use if jpeg is enabled |
|
2416 this._fail("Unsupported tight subencoding received " + |
|
2417 "(filter: " + filterId + ")"); |
|
2418 } |
|
2419 break; |
|
2420 case "copy": |
|
2421 if (!handleCopy()) { return false; } |
|
2422 break; |
|
2423 } |
|
2424 |
|
2425 |
|
2426 this._FBU.bytes = 0; |
|
2427 this._FBU.rects--; |
|
2428 |
|
2429 return true; |
|
2430 }, |
|
2431 |
|
2432 last_rect: function () { |
|
2433 this._FBU.rects = 0; |
|
2434 return true; |
|
2435 }, |
|
2436 |
|
2437 ExtendedDesktopSize: function () { |
|
2438 this._FBU.bytes = 1; |
|
2439 if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; } |
|
2440 |
|
2441 var firstUpdate = !this._supportsSetDesktopSize; |
|
2442 this._supportsSetDesktopSize = true; |
|
2443 |
|
2444 // Normally we only apply the current resize mode after a |
|
2445 // window resize event. However there is no such trigger on the |
|
2446 // initial connect. And we don't know if the server supports |
|
2447 // resizing until we've gotten here. |
|
2448 if (firstUpdate) { |
|
2449 this._requestRemoteResize(); |
|
2450 } |
|
2451 |
|
2452 var number_of_screens = this._sock.rQpeek8(); |
|
2453 |
|
2454 this._FBU.bytes = 4 + (number_of_screens * 16); |
|
2455 if (this._sock.rQwait("ExtendedDesktopSize", this._FBU.bytes)) { return false; } |
|
2456 |
|
2457 this._sock.rQskipBytes(1); // number-of-screens |
|
2458 this._sock.rQskipBytes(3); // padding |
|
2459 |
|
2460 for (var i = 0; i < number_of_screens; i += 1) { |
|
2461 // Save the id and flags of the first screen |
|
2462 if (i === 0) { |
|
2463 this._screen_id = this._sock.rQshiftBytes(4); // id |
|
2464 this._sock.rQskipBytes(2); // x-position |
|
2465 this._sock.rQskipBytes(2); // y-position |
|
2466 this._sock.rQskipBytes(2); // width |
|
2467 this._sock.rQskipBytes(2); // height |
|
2468 this._screen_flags = this._sock.rQshiftBytes(4); // flags |
|
2469 } else { |
|
2470 this._sock.rQskipBytes(16); |
|
2471 } |
|
2472 } |
|
2473 |
|
2474 /* |
|
2475 * The x-position indicates the reason for the change: |
|
2476 * |
|
2477 * 0 - server resized on its own |
|
2478 * 1 - this client requested the resize |
|
2479 * 2 - another client requested the resize |
|
2480 */ |
|
2481 |
|
2482 // We need to handle errors when we requested the resize. |
|
2483 if (this._FBU.x === 1 && this._FBU.y !== 0) { |
|
2484 var msg = ""; |
|
2485 // The y-position indicates the status code from the server |
|
2486 switch (this._FBU.y) { |
|
2487 case 1: |
|
2488 msg = "Resize is administratively prohibited"; |
|
2489 break; |
|
2490 case 2: |
|
2491 msg = "Out of resources"; |
|
2492 break; |
|
2493 case 3: |
|
2494 msg = "Invalid screen layout"; |
|
2495 break; |
|
2496 default: |
|
2497 msg = "Unknown reason"; |
|
2498 break; |
|
2499 } |
|
2500 Log.Warn("Server did not accept the resize request: " |
|
2501 + msg); |
|
2502 } else { |
|
2503 this._resize(this._FBU.width, this._FBU.height); |
|
2504 } |
|
2505 |
|
2506 this._FBU.bytes = 0; |
|
2507 this._FBU.rects -= 1; |
|
2508 return true; |
|
2509 }, |
|
2510 |
|
2511 DesktopSize: function () { |
|
2512 this._resize(this._FBU.width, this._FBU.height); |
|
2513 this._FBU.bytes = 0; |
|
2514 this._FBU.rects -= 1; |
|
2515 return true; |
|
2516 }, |
|
2517 |
|
2518 Cursor: function () { |
|
2519 Log.Debug(">> set_cursor"); |
|
2520 var x = this._FBU.x; // hotspot-x |
|
2521 var y = this._FBU.y; // hotspot-y |
|
2522 var w = this._FBU.width; |
|
2523 var h = this._FBU.height; |
|
2524 |
|
2525 var pixelslength = w * h * 4; |
|
2526 var masklength = Math.floor((w + 7) / 8) * h; |
|
2527 |
|
2528 this._FBU.bytes = pixelslength + masklength; |
|
2529 if (this._sock.rQwait("cursor encoding", this._FBU.bytes)) { return false; } |
|
2530 |
|
2531 this._display.changeCursor(this._sock.rQshiftBytes(pixelslength), |
|
2532 this._sock.rQshiftBytes(masklength), |
|
2533 x, y, w, h); |
|
2534 |
|
2535 this._FBU.bytes = 0; |
|
2536 this._FBU.rects--; |
|
2537 |
|
2538 Log.Debug("<< set_cursor"); |
|
2539 return true; |
|
2540 }, |
|
2541 |
|
2542 QEMUExtendedKeyEvent: function () { |
|
2543 this._FBU.rects--; |
|
2544 |
|
2545 // Old Safari doesn't support creating keyboard events |
|
2546 try { |
|
2547 var keyboardEvent = document.createEvent("keyboardEvent"); |
|
2548 if (keyboardEvent.code !== undefined) { |
|
2549 this._qemuExtKeyEventSupported = true; |
|
2550 } |
|
2551 } catch (err) { |
|
2552 } |
|
2553 }, |
|
2554 }; |
|