seo.url.php

Zen Cart是真正的电子商务艺术

<?php
/*
	+----------------------------------------------------------------------+
	|	Ultimate SEO URLs For Zen Cart, version 2.101                        |
	+----------------------------------------------------------------------+
	|                                                                      |
	|	Derrived from Ultimate SEO URLs v2.1 for osCommerce by Chemo         |
	|                                                                      |
	|	Portions Copyright 2005, Joshua Dechant                              |
	|                                                                      |
	|	Portions Copyright 2005, Bobby Easland                               |
	|                                                                      |
	|	Portions Copyright 2003 The zen-cart developers                      |
	|                                                                      |
	+----------------------------------------------------------------------+
	| This source file is subject to version 2.0 of the GPL license,       |
	| that is bundled with this package in the file LICENSE, and is        |
	| available through the world-wide-web at the following url:           |
	| http://www.zen-cart.com/license/2_0.txt.                             |
	| If you did not receive a copy of the zen-cart license and are unable |
	| to obtain it through the world-wide-web, please send a note to       |
	| [e-mail] so we can mail you a copy immediately.          |
	+----------------------------------------------------------------------+
*/

	require_once(dirname(__FILE__) . '/seo.install.php');

	class SEO_URL{
		var $cache;
		var $languages_id;
		var $attributes;
		var $base_url;
		var $base_url_ssl;
		var $reg_anchors;
		var $cache_query;
		var $cache_file;
		var $data;
		var $need_redirect;
		var $is_seopage;
		var $uri;
		var $real_uri;
		var $uri_parsed;
		var $db;
		var $installer;
	
		function SEO_URL($languages_id=''){
			global $session_started;
				
			$this->installer = &new SEO_URL_INSTALLER();

			$this->db = &$GLOBALS['db'];

			if ($languages_id == '') $languages_id = $_SESSION['languages_id'];
			
			$this->languages_id = (int)$languages_id; 
		
			$this->data = array(); 
		
			$seo_pages = array(
				FILENAME_DEFAULT, 
				FILENAME_PRODUCT_INFO, 
				FILENAME_POPUP_IMAGE,
				FILENAME_PRODUCT_REVIEWS,
				FILENAME_PRODUCT_REVIEWS_INFO,
			);

			// News & Article Manager SEO support
			if (defined('FILENAME_NEWS_INDEX')) $seo_pages[] = FILENAME_NEWS_INDEX;
			if (defined('FILENAME_NEWS_ARTICLE')) $seo_pages[] = FILENAME_NEWS_ARTICLE;
			if (defined('FILENAME_NEWS_COMMENTS')) $seo_pages[] = FILENAME_NEWS_COMMENTS;
			if (defined('FILENAME_NEWS_ARCHIVE')) $seo_pages[] = FILENAME_NEWS_ARCHIVE;
			if (defined('FILENAME_NEWS_RSS')) $seo_pages[] = FILENAME_NEWS_RSS;

			// Info Manager (Open Operations)
			if (defined('FILENAME_INFO_MANAGER')) $seo_pages[] = FILENAME_INFO_MANAGER;

			$this->attributes = array(
				'PHP_VERSION' => PHP_VERSION,
				'SESSION_STARTED' => $session_started,
				'SID' => (defined('SID') && $this->not_null(SID) ? SID : ''),
				'SEO_ENABLED' => defined('SEO_ENABLED') ? SEO_ENABLED : 'false',
				'SEO_ADD_CPATH_TO_PRODUCT_URLS' => defined('SEO_ADD_CPATH_TO_PRODUCT_URLS') ? SEO_ADD_CPATH_TO_PRODUCT_URLS : 'false',
				'SEO_ADD_CAT_PARENT' => defined('SEO_ADD_CAT_PARENT') ? SEO_ADD_CAT_PARENT : 'true',
				'SEO_URLS_USE_W3C_VALID' => defined('SEO_URLS_USE_W3C_VALID') ? SEO_URLS_USE_W3C_VALID : 'true',
				'USE_SEO_CACHE_GLOBAL' => defined('USE_SEO_CACHE_GLOBAL') ? USE_SEO_CACHE_GLOBAL : 'false',
				'USE_SEO_CACHE_PRODUCTS' => defined('USE_SEO_CACHE_PRODUCTS') ? USE_SEO_CACHE_PRODUCTS : 'false',
				'USE_SEO_CACHE_CATEGORIES' => defined('USE_SEO_CACHE_CATEGORIES') ? USE_SEO_CACHE_CATEGORIES : 'false',
				'USE_SEO_CACHE_MANUFACTURERS' => defined('USE_SEO_CACHE_MANUFACTURERS') ? USE_SEO_CACHE_MANUFACTURERS : 'false',
				'USE_SEO_CACHE_ARTICLES' => defined('USE_SEO_CACHE_ARTICLES') ? USE_SEO_CACHE_ARTICLES : 'false',
				'USE_SEO_CACHE_INFO_PAGES' => defined('USE_SEO_CACHE_INFO_PAGES') ? USE_SEO_CACHE_INFO_PAGES : 'false',
				'USE_SEO_REDIRECT' => defined('USE_SEO_REDIRECT') ? USE_SEO_REDIRECT : 'false',
				'SEO_REWRITE_TYPE' => defined('SEO_REWRITE_TYPE') ? SEO_REWRITE_TYPE : 'false',
				'SEO_URLS_FILTER_SHORT_WORDS' => defined('SEO_URLS_FILTER_SHORT_WORDS') ? SEO_URLS_FILTER_SHORT_WORDS : 'false',
				'SEO_CHAR_CONVERT_SET' => defined('SEO_CHAR_CONVERT_SET') ? $this->expand(SEO_CHAR_CONVERT_SET) : 'false',
				'SEO_REMOVE_ALL_SPEC_CHARS' => defined('SEO_REMOVE_ALL_SPEC_CHARS') ? SEO_REMOVE_ALL_SPEC_CHARS : 'false',
				'SEO_PAGES' => $seo_pages,
				'SEO_INSTALLER' => $this->installer->attributes
			);
		
			$this->base_url = HTTP_SERVER;
			$this->base_url_ssl = HTTPS_SERVER;		
			$this->cache = array();
		
			$this->reg_anchors = array(
				'products_id' => '-p-',
				'cPath' => '-c-',
				'manufacturers_id' => '-m-',
				'pID' => '-pi-',
				'products_id_review' => '-pr-',
				'products_id_review_info' => '-pri-',

				// News & Article Manager SEO support
				'news_article_id' => '-a-',
				'news_comments_article_id' => '-a-',
				'news_dates' => '/',
				'news_archive_dates' => '/archive/',
				'news_rss_feed' => '/rss',

				// Info Manager (Open Operations)
				'info_manager_page_id' => '-i-',
			);
		
			if ($this->attributes['USE_SEO_CACHE_GLOBAL'] == 'true'){
				$this->cache_file = 'seo_urls_v2_';
				$this->cache_gc();
				if ( $this->attributes['USE_SEO_CACHE_PRODUCTS'] == 'true' ) $this->generate_products_cache();
				if ( $this->attributes['USE_SEO_CACHE_CATEGORIES'] == 'true' ) $this->generate_categories_cache();
				if ( $this->attributes['USE_SEO_CACHE_MANUFACTURERS'] == 'true' ) $this->generate_manufacturers_cache();
				if ( $this->attributes['USE_SEO_CACHE_ARTICLES'] == 'true' && defined('TABLE_NEWS_ARTICLES_TEXT')) $this->generate_news_articles_cache();
				if ( $this->attributes['USE_SEO_CACHE_INFO_PAGES'] == 'true' && defined('TABLE_INFO_MANAGER')) $this->generate_info_manager_cache();
			}

			if ($this->attributes['USE_SEO_REDIRECT'] == 'true'){
				$this->check_redirect();
			} # end if
		} # end constructor

		function href_link($page = '', $parameters = '', $connection = 'NONSSL', $add_session_id = true, $static = false, $use_dir_ws_catalog = true) {
			// don't rewrite when disabled
			// don't rewrite images, css, js, xml, real html files, etc
			if ( ($this->attributes['SEO_ENABLED'] == 'false') || (preg_match('/(.+)\.(html?|xml|css|js|png|jpe?g|gif|bmp|tiff?|ico|gz|zip|rar)$/i', $page)) ) {
				return $this->stock_href_link($page, $parameters, $connection, $add_session_id, true, $static, $use_dir_ws_catalog);
			}
      // don't rewrite the paypal IPN notify url
      if ($page == 'ipn_main_handler.php') {
       return $this->stock_href_link($page, $parameters, $connection, $add_session_id, true, $static, $use_dir_ws_catalog);
      }
      // don't rewrite the zhifubao ATN notify url
      if ($page == 'atn_main_handler.php') {
       return $this->stock_href_link($page, $parameters, $connection, $add_session_id, true, $static, $use_dir_ws_catalog);
      }

      /*
       * Fix up $page
       */
      $page = preg_replace('/(index\.php)?\??main_page=/', '', $page);  

			if ((!in_array($page, $this->attributes['SEO_PAGES'])) || (($page == FILENAME_DEFAULT) && (!preg_match('/(cpath|manufacturers_id)/i', $parameters)))) {
				if ($page == FILENAME_DEFAULT) {
					$page = '';
				} else {
					$page = $page . '.html';
				}
			}

			if ($connection == 'NONSSL') {
				$link = $this->base_url;
			} elseif ($connection == 'SSL') {
				if (ENABLE_SSL == 'true') {
					$link = $this->base_url_ssl ;
				} else {
					$link = $this->base_url;
				}
			}

      if ($use_dir_ws_catalog) {
        if ($connection == 'SSL' && ENABLE_SSL == 'true') {
          $link .= DIR_WS_HTTPS_CATALOG;
        } else {
          $link .= DIR_WS_CATALOG;
        }
      }

			if (strstr($page, '?')) {
				$separator = '&';
			} else {
				$separator = '?';
			}

			if ($this->not_null($parameters)) { 
				$link .= $this->parse_parameters($page, $parameters, $separator);	
			} else {
				// support SEO pages with no parameters
				switch ($page) {
					case FILENAME_NEWS_RSS:
						$link .= $this->make_url($page, FILENAME_NEWS_INDEX, 'news_rss_feed', '', '.xml', $separator);
						break;
					case FILENAME_NEWS_ARCHIVE:
						$link .= $this->make_url($page, FILENAME_NEWS_INDEX, 'news_archive_dates', '', '', $separator);
						break;
					case FILENAME_NEWS_INDEX:
						$link .= $this->make_url($page, FILENAME_NEWS_INDEX, 'news_dates', '', '', $separator);
						break;

					default:
						$link .= $page;
						break;
				}
			}

			$link = $this->add_sid($link, $add_session_id, $connection, $separator);

			switch($this->attributes['SEO_URLS_USE_W3C_VALID']){
				case 'true':
					if (!isset($_SESSION['customer_id']) && defined('ENABLE_PAGE_CACHE') && ENABLE_PAGE_CACHE == 'true' && class_exists('page_cache')){
						return $link;
					} else {
						return htmlspecialchars(utf8_encode($link));
					}
					break;
				case 'false':
				default:
					return $link;
					break;
			}
		} # end function

		function stock_href_link($page = '', $parameters = '', $connection = 'NONSSL', $add_session_id = true, $search_engine_safe = true, $static = false, $use_dir_ws_catalog = true) {
			global $request_type, $session_started, $http_domain, $https_domain;

			if (!$this->not_null($page)) {
				die('</td></tr></table></td></tr></table><br /><br /><strong class="note">Error!<br /><br />Unable to determine the page link!</strong><br /><br />');
			}

			if ($connection == 'NONSSL') {
				$link = HTTP_SERVER;
			} elseif ($connection == 'SSL') {
				if (ENABLE_SSL == 'true') {
					$link = HTTPS_SERVER ;
				} else {
					$link = HTTP_SERVER;
				}
			} else {
				die('</td></tr></table></td></tr></table><br /><br /><strong class="note">Error!<br /><br />Unable to determine connection method on a link!<br /><br />Known methods: NONSSL SSL</strong><br /><br />');
			}

    if ($use_dir_ws_catalog) {
      if ($connection == 'SSL') {
        $link .= DIR_WS_HTTPS_CATALOG;
      } else {
        $link .= DIR_WS_CATALOG;
      }
    }

			if (!$static) {
				if ($this->not_null($parameters)) {
					$link .= 'index.php?main_page='. $page . "&" . $this->output_string($parameters);
				} else {
					$link .= 'index.php?main_page=' . $page;
				}
			} else {
				if ($this->not_null($parameters)) {
					$link .= $page . "?" . $this->output_string($parameters);
				} else {
					$link .= $page;
				}
			}

			$separator = '&';

			while ( (substr($link, -1) == '&') || (substr($link, -1) == '?') ) $link = substr($link, 0, -1);

			if ( ($add_session_id == true) && ($session_started == true) && (SESSION_FORCE_COOKIE_USE == 'False') ) {
				if ($this->not_null($this->attributes['SID'])) {
					$_sid = $this->attributes['SID'];
				} elseif ( ( ($request_type == 'NONSSL') && ($connection == 'SSL') && (ENABLE_SSL == 'true') ) || ( ($request_type == 'SSL') && ($connection == 'NONSSL') ) ) {
					if ($http_domain != $https_domain) {
						$_sid = session_name() . '=' . session_id();
					}
				}
			}

			// clean up the link before processing
			while (strstr($link, '&&')) $link = str_replace('&&', '&', $link);
			while (strstr($link, '&amp;&amp;')) $link = str_replace('&amp;&amp;', '&amp;', $link);

			switch(true){
				case (!isset($_SESSION['customer_id']) && defined('ENABLE_PAGE_CACHE') && ENABLE_PAGE_CACHE == 'true' && class_exists('page_cache')):
					$page_cache = true;
					$return = $link . $separator . '<zensid>';
					break;
				case (isset($_sid)):
					$page_cache = false;
					$return = $link . $separator . $_sid;
					break;
				default:
					$page_cache = false;
					$return = $link;
					break;
			}

			$this->cache['STANDARD_URLS'][] = $link;

			switch(true){
				case ($this->attributes['SEO_URLS_USE_W3C_VALID'] == 'true' && !$page_cache):
					return htmlspecialchars(utf8_encode($return));
					break;
				default:
					return $return;
					break;
			}# end swtich
		} # end default tep_href function

		function add_sid($link, $add_session_id, $connection, $separator) {
			global $request_type, $http_domain, $https_domain;

			if ( ($add_session_id == true) && ($this->attributes['SESSION_STARTED']) && (SESSION_FORCE_COOKIE_USE == 'False') ) {
				if ($this->not_null($this->attributes['SID'])) {
					$_sid = $this->attributes['SID'];
				} elseif ( ( ($request_type == 'NONSSL') && ($connection == 'SSL') && (ENABLE_SSL == 'true') ) || ( ($request_type == 'SSL') && ($connection == 'NONSSL') ) ) {
					if ($http_domain != $https_domain) {
						$_sid = session_name() . '=' . session_id();
					}
				}
			}

			switch(true){
				case (!isset($_SESSION['customer_id']) && defined('ENABLE_PAGE_CACHE') && ENABLE_PAGE_CACHE == 'true' && class_exists('page_cache')):
					$return = $link . $separator . '<zensid>';
					break;
				case ($this->not_null($_sid)):
					$return = $link . $separator . $_sid;
					break;
				default:
					$return = $link;
					break;
			} # end switch
			return $return;
		} # end function
	
/**
 * Function to parse the parameters into an SEO URL 
 * @author Bobby Easland 
 * @version 1.2
 * @param string $page
 * @param string $params
 * @param string $separator NOTE: passed by reference
 * @return string 
 */	
	function parse_parameters($page, $params, &$separator) {
		$p = @explode('&', $params);
		krsort($p);
		$container = array();
		foreach ($p as $index => $valuepair){
			$p2 = @explode('=', $valuepair); 
			switch ($p2[0]){ 

				case 'article_id':
					switch(true) {
						case ($page == FILENAME_NEWS_ARTICLE):
							$url = $this->make_url($page, 'news/' . $this->get_news_article_name($p2[1]), 'news_article_id', $p2[1], '.html', $separator);
							break;
						case ($page == FILENAME_NEWS_COMMENTS):
							$url = $this->make_url($page, 'news/' . $this->get_news_article_name($p2[1]), 'news_comments_article_id', $p2[1], '-comments.html', $separator);
							break;
						default:
							$container[$p2[0]] = $p2[1];
							break;
					}
					break;

				case 'date':
					switch(true) {
						case ($page == FILENAME_NEWS_ARCHIVE):
							$url = $this->make_url($page, FILENAME_NEWS_INDEX, 'news_archive_dates', $p2[1], '.html', $separator);
							break;
						case ($page == FILENAME_NEWS_INDEX):
							$url = $this->make_url($page, FILENAME_NEWS_INDEX, 'news_dates', $p2[1], '.html', $separator);
							break;
						default:
							$container[$p2[0]] = $p2[1];
							break;
					}
					break;

				case 'pages_id':
					switch(true) {
						case ($page == FILENAME_INFO_MANAGER):
							$url = $this->make_url($page, $this->get_info_manager_page_name($p2[1]), 'info_manager_page_id', $p2[1], '.html', $separator);
							break;
						default:
							$container[$p2[0]] = $p2[1];
							break;
					}
					break;

				case 'products_id':
					switch(true) {
//						case ($page == FILENAME_PRODUCT_INFO && !$this->is_attribute_string($params)):
						case ($page == FILENAME_PRODUCT_INFO):
							$url = $this->make_url($page, $this->get_product_name($p2[1]), $p2[0], $p2[1], '.html', $separator);
							break;
						case ($page == FILENAME_PRODUCT_REVIEWS):
							$url = $this->make_url($page, $this->get_product_name($p2[1]), 'products_id_review', $p2[1], '.html', $separator);
							break;
						case ($page == FILENAME_PRODUCT_REVIEWS_INFO):
							$url = $this->make_url($page, $this->get_product_name($p2[1]), 'products_id_review_info', $p2[1], '.html', $separator);
							break;
						default:
							$container[$p2[0]] = $p2[1];
							break;
					} # end switch
					break;
				case 'cPath':
					switch(true){
						case ($page == FILENAME_DEFAULT):
							$url = $this->make_url($page, $this->get_category_name($p2[1]), $p2[0], $p2[1], '.html', $separator);
							break;
						case ($this->is_product_string($params)):
							if ($this->attributes['SEO_ADD_CPATH_TO_PRODUCT_URLS'] == 'true') {
								$container[$p2[0]] = $p2[1];
							}