<?php
/*******************************************************************************
	$Id: phpSniff.class.php,v 1.11 2002/09/13 21:40:34 epsilon7 Exp $
    
    phpSniff: HTTP_USER_AGENT Client Sniffer for PHP
	Copyright (C) 2001 Roger Raymond ~ epsilon7@users.sourceforge.net

	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
*******************************************************************************/
require_once('phpSniff.core.php');

class phpSniff extends phpSniff_core
{   var $_version = '2.1.1';
	/**
     *  Configuration
     *
     *  $_temp_file_path
     *      default : /tmp/
     *      desc    : directory writable by the server to store cookie check files.
     *              : trailing slash is needed. only used if you use the check cookie routine
     *
     *  $_check_cookies
     *      default : null
     *      desc    : Allow for the script to redirect the browser in order
     *              : to check for cookies.   In order for this to work, this
     *              : class must be instantiated before any headers are sent.
     *
     *  $_default_language
     *      default : en-us
     *      desc    : language to report as if no languages are found
     *
     *  $_allow_masquerading
     *      default : null
     *      desc    : Allow for browser to Masquerade as another.
     *              : (ie: Opera identifies as MSIE 5.0)
     *
     *  $_browsers
     *      desc    : 2D Array of browsers we wish to search for
     *              : in key => value pairs.
     *              : key   = browser to search for [as in HTTP_USER_AGENT]
     *              : value = value to return as 'browser' property
     *
     *  $_javascript_versions
     *      desc    : 2D Array of javascript version supported by which browser
     *              : in key => value pairs.
     *              : key   = javascript version
     *              : value = search parameter for browsers that support the
     *              :         javascript version listed in the key (comma delimited)
     *              :         note: the search parameters rely on the values
     *              :               set in the $_browsers array
     *
	 *  $_browser_features
     *      desc    : 2D Array of browser features supported by which browser
     *              : in key => value pairs.
     *              : key   = feature
     *              : value = search parameter for browsers that support the
     *              :         feature listed in the key (comma delimited)
     *              :         note: the search parameters rely on the values
     *              :               set in the $_browsers array
	 *
	 *  $_browser_quirks
     *      desc    : 2D Array of browser quirks present in which browser
     *              : in key => value pairs.
     *              : key   = quirk
     *              : value = search parameter for browsers that feature the
     *              :         quirk listed in the key (comma delimited)
     *              :         note: the search parameters rely on the values
     *              :               set in the $_browsers array
	 **/

    var $_temp_file_path        = '/tmp/'; // with trailing slash
    var $_check_cookies         = NULL;
    var $_default_language      = 'en-us';
    var $_allow_masquerading    = NULL;
    var $_php_version           = '';
    
    var $_browsers = array(
        'microsoft internet explorer' => 'ie',
        'msie'                        => 'ie',
        'netscape6'                   => 'ns',
        'netscape'                    => 'ns',
        'mozilla'                     => 'moz',
        'opera'                       => 'op',
        'konqueror'                   => 'konq',
        'icab'                        => 'icab',
        'lynx'                        => 'lynx',
		'links'                       => 'links',					
        'ncsa mosaic'                 => 'mosaic',
        'amaya'                       => 'amaya',
        'omniweb'                     => 'ow',
		'hotjava'					  => 'hj'
		);

    var $_javascript_versions = array(
        '1.5'   =>  'IE5.5UP,NS5UP',
        '1.4'   =>  '',
        '1.3'   =>  'NS4.05UP,OP5UP,IE5UP',
        '1.2'   =>  'NS4UP,IE4UP',
        '1.1'   =>  'NS3UP,OP,KQ',
        '1.0'   =>  'NS2UP,IE3UP',
		'0'     =>	'LN,LX,HJ'	
        );
		
	var $_browser_features = array(
		/**
		 *	the following are true by default
		 *	(see phpSniff.core.php $_feature_set array)
		 *	browsers listed here will be set to false
		 **/
		'html'		=>	'',
		'images'	=>	'LN,LX',
		'frames' 	=>	'LN,LX',
		'tables'	=>	'',
		'java'		=>	'OP3,LX,LN,NS1,MO,IE1,IE2',
		'plugins'	=>	'IE1,IE2,LX,LN',
		/**  
		 *	the following are false by default
		 *	(see phpSniff.core.php $_feature_set array)
		 *	browsers listed here will be set to true
		 **/
		'css2'		=>	'NS5UP,IE5UP',
		'css1'		=>	'NS4UP,IE4UP',
		'iframes'	=>	'IE3UP,NS5UP',
		'xml'		=>	'IE5UP,NS5UP',
		'dom'		=>	'IE5UP,NS5UP',
		'hdml'		=>	'',
		'wml'		=>	''
		);
		
	var $_browser_quirks = array(
		'must_cache_forms'			=>	'NS',
		'avoid_popup_windows'		=>	'IE3,LX,LN',
		'cache_ssl_downloads'		=>	'IE',
		'break_disposition_header'	=>	'IE5.5',
		'empty_file_input_value'	=>	'KQ',
		'scrollbar_in_way'			=>	'IE6'
		);

    function phpSniff($UA='',$settings = true)
    {   //  populate the HTTP_USER_AGENT string
        //  20020425 :: rraymond
        //      routine for easier configuration of the client at runtime
        if(is_array($settings)) {
            $run = true;
            extract($settings);
            $this->_check_cookies = $check_cookies;
            $this->_default_language = $default_language;
            $this->_allow_masquerading = $allow_masquerading;
        } else {
            // for backwards compatibility with 2.0.x series
            $run = $settings;
        }
        
        // 20020425 :: besfred
        if(empty($UA)) $UA = getenv('HTTP_USER_AGENT');
        if(empty($UA)) {
            $pv = explode(".", PHP_VERSION);
            $UA = ( $pv[0] > 3 && $pv[1] > 0 ) ? $_SERVER['HTTP_USER_AGENT'] : $HTTP_SERVER_VARS['HTTP_USER_AGENT'];
        }
        // 20020910 :: rraymond
        if(empty($UA)) return false;
        
        $this->_set_browser('ua',$UA);
        if($run) $this->init();
    }
}
?>