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<?php
/**
* @version $Id: sef.php,v 1.1.1.1 2006/07/13 19:59:31 rcho Exp $
* @package Joomla
* @copyright Copyright (C) 2005 Open Source Matters. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_VALID_MOS' ) or die( 'Restricted access' );

if ($mosConfig_sef) {
	$url_array = explode('/', $_SERVER['REQUEST_URI']);

	if (in_array('content', $url_array)) {

		/**
		* Content
		* http://www.domain.com/$option/$task/$sectionid/$id/$Itemid/$limit/$limitstart
		*/

		$uri 				= explode('content/', $_SERVER['REQUEST_URI']);
		$option 			= 'com_content';
		$_GET['option'] 	= $option;
		$_REQUEST['option'] = $option;
		$pos 				= array_search ('content', $url_array);

		// language hook for content
		$lang = '';
		foreach($url_array as $key=>$value) {
			if ( !strcasecmp(substr($value,0,5),'lang,') ) {
				$temp = explode(',', $value);
				if (isset($temp[0]) && $temp[0] != '' && isset($temp[1]) && $temp[1] != '') {
					$_GET['lang'] 		= $temp[1];
					$_REQUEST['lang'] 	= $temp[1];
					$lang 				= $temp[1];
				}
				unset($url_array[$key]);
			}
		}

		if (isset($url_array[$pos+8]) && $url_array[$pos+8] != '' && in_array('category', $url_array) && ( strpos( $url_array[$pos+5], 'order,' ) !== false ) && ( strpos( $url_array[$pos+6], 'filter,' ) !== false ) ) {
			// $option/$task/$sectionid/$id/$Itemid/$order/$filter/$limit/$limitstart
			$task 					= $url_array[$pos+1];
			$sectionid				= $url_array[$pos+2];
			$id 					= $url_array[$pos+3];
			$Itemid 				= $url_array[$pos+4];
			$order 					= str_replace( 'order,', '', $url_array[$pos+5] );
			$filter					= str_replace( 'filter,', '', $url_array[$pos+6] );
			$limit 					= $url_array[$pos+7];
			$limitstart 			= $url_array[$pos+8];
			
			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['sectionid'] 		= $sectionid;
			$_REQUEST['sectionid'] 	= $sectionid;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;
			$_GET['order'] 			= $order;
			$_REQUEST['order'] 		= $order;
			$_GET['filter'] 		= $filter;
			$_REQUEST['filter'] 	= $filter;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;
			
			$QUERY_STRING = "option=com_content&task=$task&sectionid=$sectionid&id=$id&Itemid=$Itemid&order=$order&filter=$filter&limit=$limit&limitstart=$limitstart";
		} else if (isset($url_array[$pos+7]) && $url_array[$pos+7] != '' && $url_array[$pos+5] > 1000 && ( in_array('archivecategory', $url_array) || in_array('archivesection', $url_array) ) ) {
			// $option/$task/$id/$limit/$limitstart/year/month/module
			$task 					= $url_array[$pos+1];
			$id						= $url_array[$pos+2];
			$limit 					= $url_array[$pos+3];
			$limitstart 			= $url_array[$pos+4];
			$year 					= $url_array[$pos+5];
			$month 					= $url_array[$pos+6];
			$module					= $url_array[$pos+7];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;
			$_GET['year'] 			= $year;
			$_REQUEST['year'] 		= $year;
			$_GET['month'] 			= $month;
			$_REQUEST['month'] 		= $month;
			$_GET['module']			= $module;
			$_REQUEST['module']		= $module;

			$QUERY_STRING = "option=com_content&task=$task&id=$id&limit=$limit&limitstart=$limitstart&year=$year&month=$month&module=$module";			
		} else if (isset($url_array[$pos+7]) && $url_array[$pos+7] != '' && $url_array[$pos+6] > 1000 && ( in_array('archivecategory', $url_array) || in_array('archivesection', $url_array) ) ) {
			// $option/$task/$id/$Itemid/$limit/$limitstart/year/month
			$task 					= $url_array[$pos+1];
			$id						= $url_array[$pos+2];
			$Itemid 				= $url_array[$pos+3];
			$limit 					= $url_array[$pos+4];
			$limitstart 			= $url_array[$pos+5];
			$year 					= $url_array[$pos+6];
			$month 					= $url_array[$pos+7];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;
			$_GET['year'] 			= $year;
			$_REQUEST['year'] 		= $year;
			$_GET['month'] 			= $month;
			$_REQUEST['month'] 		= $month;

			$QUERY_STRING = "option=com_content&task=$task&id=$id&Itemid=$Itemid&limit=$limit&limitstart=$limitstart&year=$year&month=$month";			
		} else if (isset($url_array[$pos+7]) && $url_array[$pos+7] != '' && in_array('category', $url_array) && ( strpos( $url_array[$pos+5], 'order,' ) !== false )) {
			// $option/$task/$sectionid/$id/$Itemid/$order/$limit/$limitstart
			$task 					= $url_array[$pos+1];
			$sectionid				= $url_array[$pos+2];
			$id 					= $url_array[$pos+3];
			$Itemid 				= $url_array[$pos+4];
			$order 					= str_replace( 'order,', '', $url_array[$pos+5] );
			$limit 					= $url_array[$pos+6];
			$limitstart 			= $url_array[$pos+7];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['sectionid'] 		= $sectionid;
			$_REQUEST['sectionid'] 	= $sectionid;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;
			$_GET['order'] 			= $order;
			$_REQUEST['order'] 		= $order;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;
			
			$QUERY_STRING = "option=com_content&task=$task&sectionid=$sectionid&id=$id&Itemid=$Itemid&order=$order&limit=$limit&limitstart=$limitstart";
		} else if (isset($url_array[$pos+6]) && $url_array[$pos+6] != '') {
		// $option/$task/$sectionid/$id/$Itemid/$limit/$limitstart
			$task 					= $url_array[$pos+1];
			$sectionid				= $url_array[$pos+2];
			$id 					= $url_array[$pos+3];
			$Itemid 				= $url_array[$pos+4];
			$limit 					= $url_array[$pos+5];
			$limitstart 			= $url_array[$pos+6];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['sectionid'] 		= $sectionid;
			$_REQUEST['sectionid'] 	= $sectionid;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;

			$QUERY_STRING = "option=com_content&task=$task&sectionid=$sectionid&id=$id&Itemid=$Itemid&limit=$limit&limitstart=$limitstart";
		} else if (isset($url_array[$pos+5]) && $url_array[$pos+5] != '') {
		// $option/$task/$id/$Itemid/$limit/$limitstart
			$task 					= $url_array[$pos+1];
			$id 					= $url_array[$pos+2];
			$Itemid 				= $url_array[$pos+3];
			$limit 					= $url_array[$pos+4];
			$limitstart 			= $url_array[$pos+5];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;
			$_GET['limit'] 			= $limit;
			$_REQUEST['limit'] 		= $limit;
			$_GET['limitstart'] 	= $limitstart;
			$_REQUEST['limitstart'] = $limitstart;

			$QUERY_STRING = "option=com_content&task=$task&id=$id&Itemid=$Itemid&limit=$limit&limitstart=$limitstart";
		} else if (isset($url_array[$pos+4]) && $url_array[$pos+4] != '' && ( in_array('archivecategory', $url_array) || in_array('archivesection', $url_array) )) {
		// $option/$task/$year/$month/$module
			$task 					= $url_array[$pos+1];
			$year 					= $url_array[$pos+2];
			$month 					= $url_array[$pos+3];
			$module 				= $url_array[$pos+4];
			
			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['year'] 			= $year;
			$_REQUEST['year'] 		= $year;
			$_GET['month'] 			= $month;
			$_REQUEST['month'] 		= $month;
			$_GET['module'] 		= $module;
			$_REQUEST['module']		= $module;
			
			$QUERY_STRING = "option=com_content&task=$task&year=$year&month=$month&module=$module";
		} else if (!(isset($url_array[$pos+5]) && $url_array[$pos+5] != '') && isset($url_array[$pos+4]) && $url_array[$pos+4] != '') {
		// $option/$task/$sectionid/$id/$Itemid
			$task 					= $url_array[$pos+1];
			$sectionid 				= $url_array[$pos+2];
			$id 					= $url_array[$pos+3];
			$Itemid 				= $url_array[$pos+4];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['sectionid'] 		= $sectionid;
			$_REQUEST['sectionid'] 	= $sectionid;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;

			$QUERY_STRING = "option=com_content&task=$task&sectionid=$sectionid&id=$id&Itemid=$Itemid";
		} else if (!(isset($url_array[$pos+4]) && $url_array[$pos+4] != '') && (isset($url_array[$pos+3]) && $url_array[$pos+3] != '')) {
		// $option/$task/$id/$Itemid
			$task 					= $url_array[$pos+1];
			$id 					= $url_array[$pos+2];
			$Itemid 				= $url_array[$pos+3];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;
			$_GET['Itemid'] 		= $Itemid;
			$_REQUEST['Itemid'] 	= $Itemid;

			$QUERY_STRING = "option=com_content&task=$task&id=$id&Itemid=$Itemid";
		} else if (!(isset($url_array[$pos+3]) && $url_array[$pos+3] != '') && (isset($url_array[$pos+2]) && $url_array[$pos+2] != '')) {
		// $option/$task/$id
			$task 					= $url_array[$pos+1];
			$id 					= $url_array[$pos+2];

			// pass data onto global variables
			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;
			$_GET['id'] 			= $id;
			$_REQUEST['id'] 		= $id;

			$QUERY_STRING = "option=com_content&task=$task&id=$id";
		} else if (!(isset($url_array[$pos+2]) && $url_array[$pos+2] != '') && (isset($url_array[$pos+1]) && $url_array[$pos+1] != '')) {
		// $option/$task
			$task = $url_array[$pos+1];

			$_GET['task'] 			= $task;
			$_REQUEST['task'] 		= $task;

			$QUERY_STRING = 'option=com_content&task='. $task;
		}

		if ($lang!='') {
			$QUERY_STRING .= '&amp;lang='. $lang;
		}

		$_SERVER['QUERY_STRING'] 	= $QUERY_STRING;
		$REQUEST_URI 				= $uri[0].'index.php?'.$QUERY_STRING;
		$_SERVER['REQUEST_URI'] 	= $REQUEST_URI;

	} else if (in_array('component', $url_array)) {

		/*
		Components
		http://www.domain.com/component/$name,$value
		*/
		$uri = explode('component/', $_SERVER['REQUEST_URI']);
		$uri_array = explode('/', $uri[1]);
		$QUERY_STRING = '';
		
		// needed for check if component exists
		$path 		= $mosConfig_absolute_path .'/components';
		$dirlist 	= array();
		if ( is_dir( $path ) ) {
			$base = opendir( $path );	
			while (false !== ( $dir = readdir($base) ) ) {
				if (is_dir($path .'/'. $dir) && $dir !== '.' && $dir !== '..' && strtolower($dir) !== 'cvs' && strtolower($dir) !== '.svn') {
					$dirlist[] = $dir;
				}
			}
			closedir($base);
		}

		foreach($uri_array as $value) {
			$temp = explode(',', $value);
			if (isset($temp[0]) && $temp[0]!='' && isset($temp[1]) && $temp[1]!='') {
				$_GET[$temp[0]] 	= $temp[1];
				$_REQUEST[$temp[0]] = $temp[1];
				
				// check to ensure component actually exists
				if ( $temp[0] == 'option' ) {
					$check = '';
					if (count( $dirlist )) {
						foreach ( $dirlist as $dir ) {
							if ( $temp[1] == $dir ) {
								$check = 1;
								break;
							}
						}
					}
					// redirect to 404 page if no component found to match url
					if ( !$check ) {
						header( 'HTTP/1.0 404 Not Found' );
						require_once( $mosConfig_absolute_path . '/templates/404.php' );
						exit( 404 );
					}
				}
				
				if ( $QUERY_STRING == '' ) {
					$QUERY_STRING .= "$temp[0]=$temp[1]";
				} else {
					$QUERY_STRING .= "&$temp[0]=$temp[1]";
				}
			}
		}
		
		$_SERVER['QUERY_STRING'] 	= $QUERY_STRING;
		$REQUEST_URI 				= $uri[0].'index.php?'.$QUERY_STRING;
		$_SERVER['REQUEST_URI'] 	= $REQUEST_URI;

		if (defined('RG_EMULATION') && RG_EMULATION == 1) {
			// Extract to globals
			while(list($key,$value)=each($_GET)) {
				if ($key!="GLOBALS") {
					$GLOBALS[$key]=$value;
				}
			}
			// Don't allow config vars to be passed as global
			include( 'configuration.php' );
		}

	} else {

		/*
		Unknown content
		http://www.domain.com/unknown
		*/
		$jdir = str_replace( 'index.php', '', $_SERVER['PHP_SELF'] );
		$juri = str_replace( $jdir, '', $_SERVER['REQUEST_URI'] );
		
		if ($juri != '' && $juri != '/' && !eregi( "index\.php", $_SERVER['REQUEST_URI'] ) && !eregi( "index2\.php", $_SERVER['REQUEST_URI'] ) && !eregi( "/\?", $_SERVER['REQUEST_URI'] ) && $_SERVER['QUERY_STRING'] == '' ) {
			header( 'HTTP/1.0 404 Not Found' );
			require_once( $mosConfig_absolute_path . '/templates/404.php' );
			exit( 404 );
		}
	}
}

/**
 * Converts an absolute URL to SEF format
 * @param string The URL
 * @return string
 */
function sefRelToAbs( $string ) {
	global $mosConfig_live_site, $mosConfig_sef, $mosConfig_mbf_content, $mosConfig_multilingual_support;
	global $iso_client_lang;

	//multilingual code url support
	if( $mosConfig_sef && ($mosConfig_mbf_content || $mosConfig_multilingual_support) && $string!='index.php' && !eregi("^(([^:/?#]+):)",$string) && !strcasecmp(substr($string,0,9),'index.php') && !eregi('lang=', $string) ) {
		$string .= '&amp;lang='. $iso_client_lang;
	}

	// SEF URL Handling
	if ($mosConfig_sef && !eregi("^(([^:/?#]+):)",$string) && !strcasecmp(substr($string,0,9),'index.php')) {
		// Replace all &amp; with &
		$string = str_replace( '&amp;', '&', $string );

		// Home index.php
		if ($string == 'index.php') {
			$string = '';
		}
		
		// break link into url component parts
		$url = parse_url( $string );

		// check if link contained fragment identifiers (ex. #foo)
		$fragment = '';
		if ( isset($url['fragment']) ) {
			// ensure fragment identifiers are compatible with HTML4
			if (preg_match('@^[A-Za-z][A-Za-z0-9:_.-]*$@', $url['fragment'])) {
				$fragment = '#'. $url['fragment'];
			}
		}

		// check if link contained a query component
		if ( isset($url['query']) ) {
			// special handling for javascript
			$url['query'] = stripslashes( str_replace( '+', '%2b', $url['query'] ) );
			// clean possible xss attacks
			$url['query'] = preg_replace( "'%3Cscript[^%3E]*%3E.*?%3C/script%3E'si", '', $url['query'] );

			// break url into component parts			
			parse_str( $url['query'], $parts );

			// special handling for javascript
			foreach( $parts as $key => $value) {
				if ( strpos( $value, '+' ) !== false ) {
					$parts[$key] = stripslashes( str_replace( '%2b', '+', $value ) );
				}
			}
			//var_dump($parts);
			$sefstring = '';

			// Component com_content urls
			if ( ( $parts['option'] == 'com_content' || $parts['option'] == 'content' ) && ( $parts['task'] != 'new' ) && ( $parts['task'] != 'edit' ) ) {
			// index.php?option=com_content [&task=$task] [&sectionid=$sectionid] [&id=$id] [&Itemid=$Itemid] [&limit=$limit] [&limitstart=$limitstart] [&year=$year] [&month=$month] [&module=$module]
				$sefstring .= 'content/';
				
				// task 
				if ( isset( $parts['task'] ) ) {
					$sefstring .= $parts['task'].'/';					
				}
				// sectionid 
				if ( isset( $parts['sectionid'] ) ) {
					$sefstring .= $parts['sectionid'].'/';					
				}
				// id 
				if ( isset( $parts['id'] ) ) {
					$sefstring .= $parts['id'].'/';					
				}
				// Itemid 
				if ( isset( $parts['Itemid'] ) ) {
					//only add Itemid value if it does not correspond with the 'unassigned' Itemid value
					if ( $parts['Itemid'] != 99999999 && $parts['Itemid'] != 0 ) {
						$sefstring .= $parts['Itemid'].'/';					
					}
				}
				// order
				if ( isset( $parts['order'] ) ) {
					$sefstring .= 'order,'. $parts['order'].'/';	
				}
				// filter
				if ( isset( $parts['filter'] ) ) {
					$sefstring .= 'filter,'. $parts['filter'].'/';	
				}
				// limit
				if ( isset( $parts['limit'] ) ) {
					$sefstring .= $parts['limit'].'/';	
				}
				// limitstart
				if ( isset( $parts['limitstart'] ) ) {
					$sefstring .= $parts['limitstart'].'/';					
				}
				// year
				if ( isset( $parts['year'] ) ) {
					$sefstring .= $parts['year'].'/';					
				}
				// month
				if ( isset( $parts['month'] ) ) {
					$sefstring .= $parts['month'].'/';					
				}
				// module
				if ( isset( $parts['module'] ) ) {
					$sefstring .= $parts['module'].'/';					
				}
				// lang
				if ( isset( $parts['lang'] ) ) {
					$sefstring .= 'lang,'. $parts['lang'].'/';					
				}

				$string = $sefstring;
				
			// all other components
			} else if ( ( strpos( $parts['option'], 'com_' ) !== false ) && ( @$parts['task'] != 'new' ) && ( @$parts['task'] != 'edit' ) ) {
			// index.php?option=com_xxxx &...
				$sefstring 	= 'component/';
				
				foreach($parts as $key => $value) {
					// remove slashes automatically added by parse_str
					$value		= stripslashes($value);
					$sefstring .= $key .','. $value.'/';
				}
				
				$string = str_replace( '=', ',', $sefstring );
			}
		}

		// comment line below if you dont have mod_rewrite
		return $mosConfig_live_site .'/'. $string . $fragment;

		// allows SEF without mod_rewrite
		// uncomment Line 508 and comment out Line 510	
	
		// uncomment line below if you dont have mod_rewrite
		// return $mosConfig_live_site .'/index.php/'. $string . $fragment;
		// If the above doesnt work - try uncommenting this line instead
		// return $mosConfig_live_site .'/index.php?/'. $string . $fragment;
	} else {
	// Handling for when SEF is not activated
		// Relative link handling
		if ( (strpos( $string, $mosConfig_live_site ) !== 0) ) {
			// if URI starts with a "/", means URL is at the root of the host...
			if (strncmp($string, '/', 1) == 0) {
				// splits http(s)://xx.xx/yy/zz..." into [1]="http(s)://xx.xx" and [2]="/yy/zz...":
				$live_site_parts = array();
				eregi("^(https?:[\/]+[^\/]+)(.*$)", $mosConfig_live_site, $live_site_parts);
				
				$string = $live_site_parts[1] . $string;
			} else {
				$check = 1;
				
				// array list of non http/https	URL schemes
				$url_schemes 	= explode( ', ', _URL_SCHEMES );
				$url_schemes[] 	= 'http:';
				$url_schemes[] 	= 'https:';

				foreach ( $url_schemes as $url ) {
					if ( strpos( $string, $url ) === 0 ) {
						$check = 0;
					}
				}
				
				if ( $check ) {
					$string = $mosConfig_live_site .'/'. $string;
				}
			}
		}
		
		return $string;
	}
}
?>