program/include/rcube_browser.php

   1 <?php
   2
   3 /*
   4  +-----------------------------------------------------------------------+
   5  | program/include/rcube_browser.php                                     |
   6  |                                                                       |
   7  | This file is part of the Roundcube Webmail client                     |
   8  | Copyright (C) 2007-2009, The Roundcube Dev Team                       |
   9  | Licensed under the GNU GPL                                            |
  10  |                                                                       |
  11  | PURPOSE:                                                              |
  12  |   Class representing the client browser's properties                  |
  13  |                                                                       |
  14  +-----------------------------------------------------------------------+
  15  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  16  +-----------------------------------------------------------------------+
  17
  18  $Id: rcube_browser.php 4971 2011-07-27 06:37:17Z alec $
  19
  20 */
  21
  22 /**
  23  * rcube_browser
  24  *
  25  * Provide details about the client's browser based on the User-Agent header
  26  *
  27  * @package Core
  28  */
  29 class rcube_browser
  30 {
  31     function __construct()
  32     {
  33         $HTTP_USER_AGENT = strtolower($_SERVER['HTTP_USER_AGENT']);
  34
  35         $this->ver = 0;
  36         $this->win = strstr($HTTP_USER_AGENT, 'win');
  37         $this->mac = strstr($HTTP_USER_AGENT, 'mac');
  38         $this->linux = strstr($HTTP_USER_AGENT, 'linux');
  39         $this->unix  = strstr($HTTP_USER_AGENT, 'unix');
  40
  41         $this->opera = strstr($HTTP_USER_AGENT, 'opera');
  42         $this->ns4 = strstr($HTTP_USER_AGENT, 'mozilla/4') && !stristr($HTTP_USER_AGENT, 'msie');
  43         $this->ns  = ($this->ns4 || strstr($HTTP_USER_AGENT, 'netscape'));
  44         $this->ie  = !$this->opera && stristr($HTTP_USER_AGENT, 'compatible; msie');
  45         $this->mz  = !$this->ie && strstr($HTTP_USER_AGENT, 'mozilla/5');
  46         $this->chrome = strstr($HTTP_USER_AGENT, 'chrome');
  47         $this->khtml = strstr($HTTP_USER_AGENT, 'khtml');
  48         $this->safari = !$this->chrome && ($this->khtml || strstr($HTTP_USER_AGENT, 'safari'));
  49
  50         if ($this->ns || $this->chrome) {
  51             $test = preg_match('/(mozilla|chrome)\/([0-9.]+)/', $HTTP_USER_AGENT, $regs);
  52             $this->ver = $test ? (float)$regs[2] : 0;
  53         }
  54         else if ($this->mz) {
  55             $test = preg_match('/rv:([0-9.]+)/', $HTTP_USER_AGENT, $regs);
  56             $this->ver = $test ? (float)$regs[1] : 0;
  57         }
  58         else if ($this->ie || $this->opera) {
  59             $test = preg_match('/(msie|opera) ([0-9.]+)/', $HTTP_USER_AGENT, $regs);
  60             $this->ver = $test ? (float)$regs[2] : 0;
  61         }
  62
  63         if (preg_match('/ ([a-z]{2})-([a-z]{2})/', $HTTP_USER_AGENT, $regs))
  64             $this->lang =  $regs[1];
  65         else
  66             $this->lang =  'en';
  67
  68         $this->dom = ($this->mz || $this->safari || ($this->ie && $this->ver>=5) || ($this->opera && $this->ver>=7));
  69         $this->pngalpha = $this->mz || $this->safari || ($this->ie && $this->ver>=5.5) ||
  70             ($this->ie && $this->ver>=5 && $this->mac) || ($this->opera && $this->ver>=7) ? true : false;
  71         $this->imgdata = !$this->ie;
  72     }
  73 }
  74