phpsniff.core.php

一个用PHP编写的

<?php
/*******************************************************************************
	$Id: phpSniff.core.php,v 1.16 2003/07/02 23:30:29 epsilon7 Exp $
    
    phpSniff: HTTP_USER_AGENT Client Sniffer for PHP
	Copyright (C) 2001 Roger Raymond ~ [e-mail]

	This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*******************************************************************************/

/**
 * \ingroup Net_HTTP
 *
 * The PHPSniff package provides support for detecting the browser capabilities at run-time.
 *
 */
class phpSniff_core
{   // initialize some vars
	var $_browser_info = array(
    	'ua'         => '',
    	'browser'    => 'Unknown',
    	'version'    => 0,
    	'maj_ver'    => 0,
    	'min_ver'    => 0,
    	'letter_ver' => '',
    	'javascript' => '0.0',
    	'platform'   => 'Unknown',
    	'os'         => 'Unknown',
    	'ip'         => 'Unknown',
        'cookies'    => 'Unknown', // remains for backwards compatability
    	'ss_cookies' => 'Unknown',
        'st_cookies' => 'Unknown',
    	'language'   => '',
		'long_name'  => '',
		'gecko'      => '',
        'gecko_ver'  => ''
		);
	
	var $_feature_set = array(
		'html'		 =>	true,
		'images'	 =>	true,
		'frames' 	 =>	true,
		'tables'	 =>	true,
		'java'		 =>	true,
		'plugins'	 => true,
		'iframes'	 => false,
		'css2'		 =>	false,
		'css1'		 =>	false,
		'xml'		 =>	false,
		'dom'		 =>	false,
		'wml'		 =>	false,
		'hdml'		 =>	false,
        'xmlhttpreq' => false 
		);
	
	var $_quirks = array(
		'must_cache_forms'			=>	false,
		'avoid_popup_windows'		=>	false,
		'cache_ssl_downloads'		=>	false,
		'break_disposition_header'	=>	false,
		'empty_file_input_value'	=>	false,
		'scrollbar_in_way'			=>	false
		);

	var $_get_languages_ran_once = false;
	var $_browser_search_regex = '([a-z]+)([0-9]*)([0-9.]*)(up|dn|\+|\-)?';
	var $_language_search_regex = '([a-z-]{2,})';
	
    /**
     *  init
     *  this method starts the madness
     **/
    function init ()
    {   
        //  collect the ip
        	$this->_get_ip();
        //  run the cookie check routine first
        //  [note: method only runs if allowed]
        	$this->_test_cookies();
		//  rip the user agent to pieces
        	$this->_get_browser_info();
        //	gecko build
			$this->_get_gecko();
		//  look for other languages
        	$this->_get_languages();
		//  establish the operating platform
        	$this->_get_os_info();
		//  determine javascript version
        	$this->_get_javascript();
		//	determine current feature set
			$this->_get_features();
		//	point out any quirks
			$this->_get_quirks();
	}

    /**
     *  property
     *  @param $p property to return . optional (null returns entire array)
     *  @return array/string entire array or value of property
     **/
    function property ($p=null)
    {   if($p==null)
        {   return $this->_browser_info;
        }
        else
        {   return $this->_browser_info[strtolower($p)];
        }
    }
	
	/**
	 *	get_property
	 *	alias for property
	 **/
	function get_property ($p)
	{	return $this->property($p);
	}

    /**
     *  is
     *  @param $s string search phrase format = l:lang;b:browser
     *  @return bool true on success
     *  ex: $client->is('b:OP5Up');
     **/
    function is ($s)
    {   // perform language search
		if(preg_match('/l:'.$this->_language_search_regex.'/i',$s,$match))
        {   if($match) return $this->_perform_language_search($match);
        }
        // perform browser search
        elseif(preg_match('/b:'.$this->_browser_search_regex.'/i',$s,$match))
        {   if($match) return $this->_perform_browser_search($match);
        }
        return false;
    }
	
	/**
	 *	browser_is
	 *	@param $s string search phrase for browser
	 *  @return bool true on success
     *  ex: $client->browser_is('OP5Up');
	 **/
	function browser_is ($s)
	{	preg_match('/'.$this->_browser_search_regex.'/i',$s,$match);
		if($match) return $this->_perform_browser_search($match);
	}
	
	/**
	 *	language_is
	 *	@param $s string search phrase for language
	 *  @return bool true on success
     *  ex: $client->language_is('en-US');
	 **/
	function language_is ($s)
	{	preg_match('/'.$this->_language_search_regex.'/i',$s,$match);
		if($match) return $this->_perform_language_search($match);
	}
	
	/**
	 *	has_feature
	 *	@param $s string feature we're checking on
	 *  @return bool true on success
     *  ex: $client->has_feature('html');
	 **/
	function has_feature ($s)
	{	return $this->_feature_set[$s];
	}
	
	/**
	 *	has_quirk
	 *	@param $s string quirk we're looking for
	 *  @return bool true on success
     *  ex: $client->has_quirk('avoid_popup_windows');
	 **/
	function has_quirk ($s)
	{	return $this->_quirks[$s];
	}

    /**
     *  _perform_browser_search
     *  @param $data string what we're searching for
     *  @return bool true on success
     *  @private
     **/
    function _perform_browser_search ($data)
    {   $search = array();
		$search['phrase'] 		= isset($data[0]) ? $data[0] : '';
		$search['name']   		= isset($data[1]) ? strtolower($data[1]) : '';
		$search['maj_ver']   	= isset($data[2]) ? $data[2] : '';
		$search['min_ver']   	= isset($data[3]) ? $data[3] : '';
		$search['direction']	= isset($data[4]) ? strtolower($data[4]) : '';
		
        $looking_for = $search['maj_ver'].$search['min_ver'];
        if($search['name'] == 'aol' || $search['name'] == 'webtv')
        {   return stristr($this->_browser_info['ua'],$search['name']);
        }
        elseif($this->_browser_info['browser'] == $search['name'])
        {   $majv = $search['maj_ver'] ? $this->_browser_info['maj_ver'] : '';
            $minv = $search['min_ver'] ? $this->_browser_info['min_ver'] : '';
            $what_we_are = $majv.$minv;
            if(($search['direction'] == 'up' || $search['direction'] == '+') 
               && ($what_we_are >= $looking_for))
            {   return true;
            }
			elseif(($search['direction'] == 'dn' || $search['direction'] == '-')
                   && ($what_we_are <= $looking_for))
			{	return true;
			}
            elseif($what_we_are == $looking_for)
            {   return true;
            }
        }
		return false;
    }

    function _perform_language_search ($data)
    {   // if we've not grabbed the languages, then do so.
        $this->_get_languages();
        return stristr($this->_browser_info['language'],$data[1]);
    }

    function _get_languages ()
    {   // capture available languages and insert into container
        if(!$this->_get_languages_ran_once)
        {   if($languages = getenv('HTTP_ACCEPT_LANGUAGE'))
            {   $languages = preg_replace('/(;q=[0-9]+.[0-9]+)/i','',$languages);
            }
            else
            {   $languages = $this->_default_language;
            }
            $this->_set_browser('language',$languages);
            $this->_get_languages_ran_once = true;
        }
    }

    function _get_os_info ()
    {   // regexes to use
        $regex_windows  = '/([^dar]win[dows]*)[\s]?([0-9a-z]*)[\w\s]?([a-z0-9.]*)/i';
        $regex_mac      = '/(68[k0]{1,3})|(ppc mac os x)|([p\S]{1,5}pc)|(darwin)/i';
        $regex_os2      = '/os\/2|ibm-webexplorer/i';
        $regex_sunos    = '/(sun|i86)[os\s]*([0-9]*)/i';
        $regex_irix     = '/(irix)[\s]*([0-9]*)/i';
        $regex_hpux     = '/(hp-ux)[\s]*([0-9]*)/i';
        $regex_aix      = '/aix([0-9]*)/i';
        $regex_dec      = '/dec|osfl|alphaserver|ultrix|alphastation/i';
        $regex_vms      = '/vax|openvms/i';
        $regex_sco      = '/sco|unix_sv/i';
        $regex_linux    = '/x11|inux/i';
        $regex_bsd      = '/(free)?(bsd)/i';
        $regex_amiga    = '/amiga[os]?/i';

        // look for Windows Box
        if(preg_match_all($regex_windows,$this->_browser_info['ua'],$match))
        {   /** Windows has some of the most ridiculous HTTP_USER_AGENT strings */
			//$match[1][count($match[0])-1];
            $v  = $match[2][count($match[0])-1];
            $v2 = $match[3][count($match[0])-1];
            // Establish NT 5.1 as Windows XP
				if(stristr($v,'NT') && $v2 == 5.1) $v = 'xp';
			// Establish NT 5.0 and Windows 2000 as win2k
                elseif($v == '2000') $v = '2k';
                elseif(stristr($v,'NT') && $v2 == 5.0) $v = '2k';
			// Establish 9x 4.90 as Windows 98
				elseif(stristr($v,'9x') && $v2 == 4.9) $v = '98';
            // See if we're running windows 3.1
                elseif($v.$v2 == '16bit') $v = '31';
            // otherwise display as is (31,95,98,NT,ME,XP)