[php-utility-classes.git] / include / classes / useragent.php-class

<?php
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is KaiRo's userAgent detection.
 *
 * The Initial Developer of the Original Code is
 * KaiRo - Robert Kaiser.
 * Portions created by the Initial Developer are Copyright (C) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s): Robert Kaiser <kairo@kairo.at>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

class userAgent {
  // userAgent PHP class
  // get user agent and tell us what Browser is accessing
  //
  // function userAgent([$ua_string])
  //   CONSTRUCTOR; reads UA string (or takes the optional given UA string) and gets info from that into our variables.
  //
  // var $uastring
  //   the plain User Agent string
  // var $brand
  //   the User Agent brand name
  // var $version
  //   the User Agent version
  // var $bot
  //   bool: true if this agent is a bot
  // var $uadata
  //   array of static user agent data (static vars in functions are set for all objects of this class!)
  //
  // function getBrand()
  //   returns the User Agent Brand Name
  //
  // function getVersion()
  //   returns the User Agent version
  //
  // function getAcceptLanguages()
  //   returns an associated array with the accepted languages of this UA
  //     keys are language codes, values are q factors (weights)
  //
  // function getUAString()
  //   returns the full User Agent string
  //
  // function getEngine()
  //   returns a string telling the detected rendering engine, null if we can't detect
  //     one of gecko|khtml|trident|tasman|nscp|presto|gzilla|gtkhtml|links|unkown
  //
  // function hasEngine($rnd_engine)
  //   returns true if the given rendering engine was detected
  //
  // function getEngineVersion()
  //   returns a the version number for the rendering engine
  //     this may be the same as getVersion() for many engines, or null if we don't know
  //
  // function getOS()
  //   returns a string telling the detected operating system, null if we can't detect
  //     might be very verbose, uses no abbreviations for most names
  //
  // function getPlatform()
  //   returns a string telling the detected OS platform, null if we can't detect
  //     one of windows|linux|mac|solaris|unkown
  //
  // function getLanguage() {
  //   returns a string telling the detected browser UI language, null if we can't detect
  //     should be an ISO code
  //
  // function isBot()
  //   returns true if User Agent seems to be a bot
  //
  // *** functions that only return useable info for some agents ***
  //
  // function getGeckoDate()
  //   returns the Gecko date for Gecko-based browsers, null for others
  //
  // *** functions for compat to older versions of this class ***
  //
  // function isns()
  //   returns true if User Agent seems to be Netscape brand, false if not
  // function isns4()
  //   returns true if User Agent seems to be Netscape Communicator 4.x, false if not
  // function isie()
  //   returns true if User Agent seems to be a version of Internet Exploder, false if not
  // function geckobased()
  //   returns true if User Agent seems to be a Gecko-based browser, false if not
  // function geckodate()
  //   returns the Gecko date when it's a Gecko-based browser, 0 if not
  // function khtmlbased()
  //   returns true if User Agent seems to be a KHTML-based browser, false if not

  // collection of some known User Agent Strings:
  // *** see testbed/ua_list_raw.txt ***
  // *** see also http://www.pgts.com.au/pgtsj/pgtsj0208c.html ***

  var $uastring;
  var $brand;
  var $version;
  var $bot = false;
  var $uadata = array();

  function userAgent($ua_string = '') {
    // *** constructor ***
    if (strlen($ua_string)) {
      $this->uastring = $ua_string;
    }
    else {
      // read raw UA string
      $this->uastring = $_SERVER['HTTP_USER_AGENT'];
    }

    // get UA brand and version
    $this->brand = 'Unknown'; $this->version = null;
    // find reasonable defaults
    if (preg_match('|([0-9a-zA-Z\.()_ -]+)/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = trim($regs[1]);
      $this->version = $regs[2];
    }
    elseif (preg_match('|^([a-zA-Z\._ -]+)[_ -][vV]?([0-9][0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = trim($regs[1]);
      $this->version = $regs[2];
    }
    elseif (preg_match('|^([a-zA-Z\._ -]+)|', $this->uastring, $regs)) {
      $this->brand = trim($regs[1]);
      $this->version = null;
    }
    // search for any real and/or special UAs
    if (preg_match('|Netscape6/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Netscape';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Netscape/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Netscape';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Chimera/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Chimera';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Camino/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Camino';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Phoenix/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Phoenix';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Mozilla Firebird/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Mozilla Firebird';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Firefox/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Firefox';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Galeon/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Galeon';
      $this->version = $regs[1];
    }
    elseif (preg_match('|rv:([0-9a-zA-Z\.+]+)|', $this->uastring, $regs) && strstr($this->uastring, "Mozilla/") && strstr($this->uastring, "Gecko/")) {
      $this->brand = 'Mozilla';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Opera[ /]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Opera';
      $this->version = $regs[1];
    }
    elseif (preg_match('|OmniWeb/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'OmniWeb';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Konqueror/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Konqueror';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Safari/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Safari';
      $this->version = $regs[1];
    }
    elseif (preg_match('|AppleWebKit/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'AppleWebKit';
      $this->version = $regs[1];
    }
    elseif (preg_match('|MSFrontPage/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Microsoft FrontPage';
      $this->version = $regs[1];
    }
    elseif (preg_match('|iCab[/ ]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'iCab';
      $this->version = $regs[1];
    }
    elseif (preg_match('|IBrowse[/ ]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'IBrowse';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Configuration/CLDC-([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'CLDC';
      $this->version = $regs[1];
    }
    elseif (preg_match('|ELinks \(([0-9a-zA-Z\.+]+);|', $this->uastring, $regs)) {
      $this->brand = 'ELinks';
      $this->version = $regs[1];
    }
    elseif (preg_match('|ZyBorg/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'ZyBorg';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|Googlebot/?([0-9a-zA-Z\.+]+)?|', $this->uastring, $regs)) {
      $this->brand = 'Googlebot';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|Ask Jeeves/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Ask Jeeves';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|Slurp/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Slurp';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|Gulper Web Bot ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Gulper Web Bot';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|HTTrack ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'HTTrack';
      $this->version = $regs[1];
      $this->bot = true;
    }
    elseif (preg_match('|^Internet Explorer 5.5|', $this->uastring)) {
      $this->brand = 'Unknown bot (IE5.5)';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|^Mozilla[\s ]*$|', $this->uastring)) {
      $this->brand = 'Unknown bot (Mozilla)';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|http://www.almaden.ibm.com/cs/crawler|', $this->uastring)) {
      $this->brand = 'almaden crawler';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|B-l-i-t-z-B-O-T|', $this->uastring) || preg_match('|B l i t z B O T @ t r i c u s . n e t|', $this->uastring)) {
      $this->brand = 'BlitzBOT';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|sitecheck.internetseer.com|', $this->uastring)) {
      $this->brand = 'internetseer';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|Girafabot|', $this->uastring)) {
      $this->brand = 'Girafabot';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|efp@gmx.net|', $this->uastring)) {
      $this->brand = 'efp';
      $this->version = null;
      $this->bot = true;
    }
    elseif (preg_match('|^Firefly|', $this->uastring)) {
      // comes here with correct value but would be detected as MSIE
    }
    elseif (preg_match('|Avant Browser[^/]|', $this->uastring)) {
      $this->brand = 'Avant Browser';
      $this->version = null;
    }
    elseif (preg_match('|Crazy Browser ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Crazy Browser';
      $this->version = $regs[1];
    }
    elseif (preg_match('|AOL ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'AOL';
      $this->version = $regs[1];
    }
    elseif (preg_match('|MSN ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'MSN';
      $this->version = $regs[1];
    }
    elseif (preg_match('|MS FrontPage ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Microsoft FrontPage';
      $this->version = $regs[1];
    }
    elseif (preg_match('|MSIE ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
      $this->brand = 'Microsoft Internet Explorer';
      $this->version = $regs[1];
    }
    elseif (preg_match('|Mozilla/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs) && !strstr($this->uastring, "compatible;") && !strstr($this->uastring, "Gecko/")) {
      $this->brand = 'Netscape';
      $this->version = $regs[1];
      if (intval($this->version) == 4) { $this->brand .= ' Communicator'; }
    }

    $botArray = array('Scooter','Spinne','Vagabondo','TurnitinBot','FAST-WebCrawler','Firefly','Googlebot',
                      'Scrubby','psbot','NG','URL_Spider_Pro','Pompos','Szukacz','ASPseek','NPBot-1',
                      'dloader(NaverRobot)','NetResearchServer','HeinrichderMiragoRobot','LinkWalker',
                      'Openbot','W3C_Validator','ZyBorg','Ask Jeeves','dumbBot','BaiDuSpider','ia_archiver',
                      'PingALink Monitoring Services','IlTrovatore-Setaccio','Nutch','Mercator','OWR_Crawler',
                      'search.ch','WebFilter Robot','appie','larbin','','','','','','','','');

    if (in_array($this->brand, $botArray)) {
      $this->bot = true;
    }
  }

  function getBrand() { return $this->brand; }
  function getVersion() { return $this->version; }

  function getAcceptLanguages() {
    if (!isset($this->uadata['accept-languages'])) {
      $headers = getAllHeaders();
      $accLcomp = explode(',', $headers['Accept-Language']);
      $accLang = array();
      foreach ($accLcomp as $lcomp) {
        if (strlen($lcomp)) {
          $ldef = explode(';', $lcomp);
          $accLang[$ldef[0]] = (float)((strpos($ldef[1],'q=')===0)?substr($ldef[1],2):1);
        }
      }
      $this->uadata['accept-languages'] = $accLang;
    }
  return $this->uadata['accept-languages'];
  }

  function getUAString() { return $this->uastring; }

  function getEngine() {
    // return gecko|khtml|trident|tasman|nscp|presto|gzilla|gtkhtml|links|unkown
    if (!isset($this->uadata['engine'])) {
      $this->uadata['engine'] = 'unkown';
      $this->uadata['geckodate'] = null;
      if (preg_match('|Gecko/([0-9]+)|', $this->uastring, $regs)) {
        $this->uadata['engine'] = 'gecko';
        $this->uadata['geckodate'] = $regs[1];
      }
      elseif ((strpos($this->brand, 'Internet Explorer') !== false) ||  (strpos($this->brand, 'FrontPage') !== false)) {
        if (($this->uadata['platform'] == 'mac') && (intval($this->version) >= 5)) {
          $this->uadata['engine'] = 'tasman';
        }
        else {
          $this->uadata['engine'] = 'trident';
        }
      }
      elseif ((strpos($this->brand, 'Konqueror') !== false) || (strpos($this->brand, 'Safari') !== false) || (strpos($this->brand, 'AppleWebKit') !== false) || (strpos($this->brand, 'OmniWeb') !== false)) {
        $this->uadata['engine'] = 'khtml';
      }
      elseif ((strpos($this->brand, 'Netscape') !== false) && (intval($this->version) <= 4)) {
        $this->uadata['engine'] = 'nscp';
      }
      elseif (strpos($this->brand, 'Opera') !== false) {
        $this->uadata['engine'] = 'presto';
      }
      elseif (strpos($this->brand, 'Dillo') !== false) {
        $this->uadata['engine'] = 'gzilla';
      }
      elseif ((strpos($this->brand, 'ELinks') !== false) || (strpos($this->brand, 'Links') !== false)) {
        $this->uadata['engine'] = 'links';
      }
      elseif ((strpos($this->brand, 'Avant') !== false) || (strpos($this->brand, 'Crazy Browser') !== false) || (strpos($this->brand, 'AOL') !== false) || (strpos($this->brand, 'MSN') !== false)) {
        $this->uadata['engine'] = 'trident';
      }
      elseif (strpos($this->brand, 'Galeon') !== false) {
        $this->uadata['engine'] = 'gecko';
      }
    }
  return $this->uadata['engine'];
  }

  function hasEngine($rnd_engine) { return ($this->getEngine() == $rnd_engine); }

  function getEngineVersion() {
    if (!isset($this->uadata['eng_version'])) {
      $this->uadata['eng_version'] = null;
      // getOS() should get the date for us
      $this->getOS();
    }
  return $this->uadata['eng_version'];
  }

  function getOS() {
    if (!isset($this->uadata['os'])) {
      $this->uadata['os'] = null;
      if ($this->hasEngine('gecko')) {
        if (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^;]+); rv:([^\);]+)\)|', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = $regs[3];
          $this->uadata['eng_version'] = $regs[4];
        }
        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^;]+); m([^\);]+)\)|', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = $regs[3];
          $this->uadata['eng_version'] = 'M'.$regs[4];
        }
        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^\);]+)\)|', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = null;
          $this->uadata['eng_version'] = null;
        }
        elseif (preg_match('|Mozilla/5.0 Galeon/[^\(]+ \(([^;]+); ([^;]+);[^\)]+\)|', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = null;
          $this->uadata['eng_version'] = null;
        }
        elseif (preg_match('|Debian/|', $this->uastring, $regs)) {
          $this->uadata['os'] = 'Debian Linux';
          $this->uadata['lang'] = null;
          $this->uadata['eng_version'] = null;
        }
      }
      elseif ($this->hasEngine('trident')) {
        if (preg_match('/Mozilla\/[^\(]+ \(compatible; MSIE ([^;]+); [^\)]*((?:Mac|Win)[^;]+)[^\)]*\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $regs[1];
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = null;
        }
        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; MSIE ([^;]+)[^\)]*\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $regs[1];
          $this->uadata['os'] = null;
          $this->uadata['lang'] = null;
        }
      }
      elseif ($this->hasEngine('khtml')) {
        if (preg_match('/Mozilla\/[^\(]+ \(compatible; Konqueror\/([^;]+); ([^;]+); ([^;]+); ([^;]+); ([^\);]+)\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $regs[1];
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = $regs[5];
        }
        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; Konqueror\/([^;]+); ([^\);]+)([^\)]+)\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $regs[1];
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = null;
        }
        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^\);]+)\)|', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[2];
          $this->uadata['lang'] = $regs[3];
          $this->uadata['eng_version'] = null;
        }
        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; [^;]+; ([^\);]+)\)/i', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[1];
          $this->uadata['lang'] = null;
          $this->uadata['eng_version'] = null;
        }
      }
      elseif ($this->hasEngine('presto')) {
        if (preg_match('/Opera\/[^\(]+ \(([^;]+)[^\)]+\) +\[([a-z_-]+)\]/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $this->getVersion();
          $this->uadata['os'] = $regs[1];
          $this->uadata['lang'] = $regs[2];
        }
        elseif (preg_match('/Opera\/[^\(]+ \(([^;]+); [^\)]+; ([a-z_-]+)\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $this->getVersion();
          $this->uadata['os'] = $regs[1];
          $this->uadata['lang'] = $regs[2];
        }
        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; [^;]+; ([^;]+)\) Opera [^ ]+ \[([a-z_-]+)\]/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $this->getVersion();
          $this->uadata['os'] = $regs[1];
          $this->uadata['lang'] = $regs[2];
        }
      }
      elseif ($this->hasEngine('nscp')) {
        if (preg_match('/Mozilla\/([0-9a-zA-Z\.+]+) \[([a-z_-]+)\] \(([^;]+); [^\)]+\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = $regs[1];
          $this->uadata['os'] = $regs[3];
          $this->uadata['lang'] = $regs[2];
        }
      }
      elseif ($this->hasEngine('gzilla')) {
        $this->uadata['eng_version'] = $this->getVersion();
        $this->uadata['os'] = null;
        $this->uadata['lang'] = null;
      }
      elseif ($this->hasEngine('links')) {
        if (preg_match('/ELinks[^\(]+\([^;]+; ([^;]+);[^\)]+\)/i', $this->uastring, $regs)) {
          $this->uadata['eng_version'] = null;
          $this->uadata['os'] = $regs[1];
          $this->uadata['lang'] = null;
        }
      }
      else {
        $this->uadata['eng_version'] = null;
        $this->uadata['lang'] = null;
        if (preg_match('/AmigaOS/i', $this->uastring, $regs)) {
          $this->uadata['os'] = 'AmigaOS';
        }
        elseif (preg_match('/curl\/[^\(]+\(([^\);]+)/i', $this->uastring, $regs)) {
          $this->uadata['os'] = $regs[1];
        }
      }
      if ($this->uadata['os'] == 'Win 9x 4.90') { $this->uadata['os'] = 'Windows ME'; }
      elseif ($this->uadata['os'] == 'WinNT4.0') { $this->uadata['os'] = 'Windows ME'; }
      elseif ($this->uadata['os'] == 'Windows NT 5.0') { $this->uadata['os'] = 'Windows 2000'; }
      elseif ($this->uadata['os'] == 'Windows NT 5.1') { $this->uadata['os'] = 'Windows XP'; }
      elseif ($this->uadata['os'] == 'Windows NT 5.2') { $this->uadata['os'] = 'Windows 2003'; }
      elseif ($this->uadata['os'] == 'Win95') { $this->uadata['os'] = 'Windows 95'; }
      elseif ($this->uadata['os'] == 'Win98') { $this->uadata['os'] = 'Windows 98'; }
      elseif (preg_match('/Mac ?OS ?X/i',$this->uadata['os'])) { $this->uadata['os'] = 'MacOS X'; }
      elseif (preg_match('/Mac_P(ower|)PC/i',$this->uadata['os'])) { $this->uadata['os'] = 'MacOS'; }
      elseif (strpos($this->uadata['os'], 'darwin') !== false) { $this->uadata['os'] = 'MacOS X'; }
      elseif (strpos($this->uadata['os'], 'apple') !== false) { $this->uadata['os'] = 'MacOS'; }
      elseif (strpos($this->uadata['os'], 'linux') !== false) { $this->uadata['os'] = 'Linux'; }

      if (strpos($this->uadata['os'], 'Win') !== false) { $this->uadata['platform'] = 'windows'; }
      elseif (strpos($this->uadata['os'], 'Mac') !== false) { $this->uadata['platform'] = 'mac'; }
      elseif (strpos($this->uadata['os'], 'Linux') !== false) { $this->uadata['platform'] = 'linux'; }
      elseif (strpos($this->uadata['os'], 'Solaris') !== false) { $this->uadata['platform'] = 'solaris'; }
      elseif (strpos($this->uadata['os'], 'FreeBSD') !== false) { $this->uadata['platform'] = 'freebsd'; }
      elseif (strpos($this->uadata['os'], 'AmigaOS') !== false) { $this->uadata['platform'] = 'amiga'; }
      else { $this->uadata['platform'] = null; }

      $this->uadata['lang'] = str_replace('_', '-', $this->uadata['lang']);
    }
  return $this->uadata['os'];
  }

  function getPlatform() {
    if (!isset($this->uadata['platform'])) {
      $this->uadata['platform'] = null;
      // getOS() should get the date for us
      $this->getOS();
    }
  return $this->uadata['platform'];
  }

  function getLanguage() {
    if (!isset($this->uadata['lang'])) {
      $this->uadata['lang'] = null;
      // getOS() should get the date for us
      $this->getOS();
    }
  return $this->uadata['lang'];
  }

  function getGeckoDate() {
    if (!isset($this->uadata['geckodate'])) {
      $this->uadata['geckodate'] = null;
      // getEngine() should get the date for us
      $this->getEngine();
    }
  return $this->uadata['geckodate'];
  }

  function isbot() { return $this->bot; }
  function isns() { return (strpos($this->brand, 'Netscape') !== false); }
  function isns4() { return ((strpos($this->brand, 'Netscape') !== false) && (intval($this->version) == 4)); }
  function isie() { return $this->hasEngine('trident'); }
  function geckodate() { return (!is_null($this->getGeckoDate())?$this->getGeckoDate():0); }
  function geckobased() { return $this->hasEngine('gecko'); }
  function khtmlbased() { return $this->hasEngine('khtml'); }
}
?>