remoting/webapp/base/js/platform.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 'use strict';
   6
   7 /** @suppress {duplicate} */
   8 var remoting = remoting || {};
   9
  10 /** @enum {string} */
  11 remoting.Os = {
  12   WINDOWS: 'Windows',
  13   LINUX: 'Linux',
  14   MAC: 'Mac',
  15   CHROMEOS: 'ChromeOS',
  16   UNKNOWN: 'Unknown'
  17 };
  18
  19 /**
  20  * @typedef {{
  21  *  osName: remoting.Os,
  22  *  osVersion: string,
  23  *  cpu: string,
  24  *  chromeVersion: string
  25  * }}
  26  */
  27 remoting.SystemInfo;
  28
  29 (function() {
  30
  31 /**
  32  * Returns full Chrome version.
  33  * @return {string?}
  34  */
  35 remoting.getChromeVersion = function() {
  36   return remoting.getSystemInfo().chromeVersion;
  37 };
  38
  39 /**
  40  * Tests whether we are running on Mac.
  41  *
  42  * @return {boolean} True if the platform is Mac.
  43  */
  44 remoting.platformIsMac = function() {
  45   return remoting.getSystemInfo().osName === remoting.Os.MAC;
  46 };
  47
  48 /**
  49  * Tests whether we are running on Windows.
  50  *
  51  * @return {boolean} True if the platform is Windows.
  52  */
  53 remoting.platformIsWindows = function() {
  54   return remoting.getSystemInfo().osName === remoting.Os.WINDOWS;
  55 };
  56
  57 /**
  58  * Tests whether we are running on Linux.
  59  *
  60  * @return {boolean} True if the platform is Linux.
  61  */
  62 remoting.platformIsLinux = function() {
  63   return remoting.getSystemInfo().osName === remoting.Os.LINUX;
  64 };
  65
  66 /**
  67  * Tests whether we are running on ChromeOS.
  68  *
  69  * @return {boolean} True if the platform is ChromeOS.
  70  */
  71 remoting.platformIsChromeOS = function() {
  72   return remoting.getSystemInfo().osName === remoting.Os.CHROMEOS;
  73 };
  74
  75 /**
  76  * @return {?remoting.SystemInfo}
  77  */
  78 remoting.getSystemInfo = function() {
  79   var userAgent = remoting.getUserAgent();
  80
  81   /** @type {remoting.SystemInfo} */
  82   var result = {
  83     chromeVersion: '',
  84     osName: remoting.Os.UNKNOWN,
  85     osVersion: '',
  86     cpu: ''
  87   };
  88
  89   // See platform_unittest.js for sample user agent strings.
  90   var chromeVersion = new RegExp('Chrome/([0-9.]*)').exec(userAgent);
  91   if (chromeVersion && chromeVersion.length >= 2) {
  92     result.chromeVersion = chromeVersion[1];
  93   }
  94
  95   var match = new RegExp('Windows NT ([0-9\\.]*)').exec(userAgent);
  96   if (match && (match.length >= 2)) {
  97     result.osName = remoting.Os.WINDOWS;
  98     result.osVersion = match[1];
  99     return result;
 100   }
 101
 102   match = new RegExp('Linux ([a-zA-Z0-9_]*)').exec(userAgent);
 103   if (match && (match.length >= 2)) {
 104     result.osName = remoting.Os.LINUX;
 105     result.osVersion = '';
 106     result.cpu = match[1];
 107     return result;
 108   }
 109
 110   match = new RegExp('([a-zA-Z]*) Mac OS X ([0-9_]*)').exec(userAgent);
 111   if (match && (match.length >= 3)) {
 112     result.osName = remoting.Os.MAC;
 113     result.osVersion = match[2].replace(/_/g, '.');
 114     result.cpu = match[1];
 115     return result;
 116   }
 117
 118   match = new RegExp('CrOS ([a-zA-Z0-9_]*) ([0-9.]*)').exec(userAgent);
 119   if (match && (match.length >= 3)) {
 120     result.osName = remoting.Os.CHROMEOS;
 121     result.osVersion = match[2];
 122     result.cpu = match[1];
 123     return result;
 124   }
 125   return null;
 126 };
 127
 128 /**
 129  * To be overwritten by unit test.
 130  *
 131  * @return {!string}
 132  */
 133 remoting.getUserAgent = function() {
 134   return navigator.userAgent;
 135 };
 136
 137 })();
 138