mirror of
https://github.com/kennethreitz-archive/wordpress-skeleton.git
synced 2026-06-05 23:50:19 +00:00
Kenneth Reitz
370 lines
14 KiB
PHP
370 lines
14 KiB
PHP
<?php
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// Pre-2.6 compatibility
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if( !defined('WP_CONTENT_DIR') )
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define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' );
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if( !include( WP_CONTENT_DIR . '/wp-cache-config.php' ) )
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return true;
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if( !defined( 'WPCACHEHOME' ) )
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define('WPCACHEHOME', dirname(__FILE__).'/');
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include( WPCACHEHOME . 'wp-cache-base.php');
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if( $blogcacheid != '' ) {
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$blog_cache_dir = str_replace( '//', '/', $cache_path . "blogs/" . $blogcacheid . '/' );
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} else {
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$blog_cache_dir = $cache_path;
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}
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$mutex_filename = 'wp_cache_mutex.lock';
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$new_cache = false;
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// Don't change variables behind this point
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if( !isset( $wp_cache_plugins_dir ) )
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$wp_cache_plugins_dir = WPCACHEHOME . 'plugins';
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require_once( WPCACHEHOME . 'wp-cache-phase2.php');
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$plugins = glob( $wp_cache_plugins_dir . '/*.php' );
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if( is_array( $plugins ) ) {
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foreach ( $plugins as $plugin ) {
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if( is_file( $plugin ) )
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require_once( $plugin );
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}
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}
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if (!$cache_enabled || $_SERVER["REQUEST_METHOD"] == 'POST')
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return true;
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$file_expired = false;
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$cache_filename = '';
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$meta_file = '';
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$wp_cache_gzip_encoding = '';
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$gzipped = 0;
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$gzsize = 0;
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function gzip_accepted(){
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if( ini_get( 'zlib.output_compression' ) ) // don't compress WP-Cache data files when PHP is already doing it
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return false;
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if (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') === false) return false;
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return 'gzip';
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}
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if ($cache_compression) {
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$wp_cache_gzip_encoding = gzip_accepted();
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}
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add_cacheaction( 'wp_cache_get_cookies_values', 'wp_cache_check_mobile' );
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$wp_cache_request_uri = $_SERVER[ 'REQUEST_URI' ]; // Cache this in case any plugin modifies it.
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if ( $wp_cache_object_cache ) {
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if ( ! include_once( WP_CONTENT_DIR . '/object-cache.php' ) )
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return;
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wp_cache_init(); // Note: wp-settings.php calls wp_cache_init() which clobbers the object made here.
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if ( ! is_object( $wp_object_cache ) )
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return;
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}
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if( false == @is_dir( $blog_cache_dir ) ) {
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@mkdir( $cache_path . "blogs" );
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@mkdir( $blog_cache_dir );
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}
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if( false == @is_dir( $blog_cache_dir . 'meta' ) )
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@mkdir( $blog_cache_dir . 'meta' );
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$wp_start_time = microtime();
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function get_wp_cache_key( $url = false ) {
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global $wp_cache_request_uri, $wp_cache_gzip_encoding;
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if ( !$url )
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$url = $wp_cache_request_uri;
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return do_cacheaction( 'wp_cache_key', $_SERVER['HTTP_HOST'].preg_replace('/#.*$/', '', str_replace( '/index.php', '/', $url ) ) . $wp_cache_gzip_encoding . wp_cache_get_cookies_values() );
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}
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function wp_super_cache_init() {
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global $wp_cache_key, $key, $blogcacheid, $wp_cache_request_uri, $file_prefix, $blog_cache_dir, $meta_file, $cache_file, $cache_filename, $wp_super_cache_debug, $meta_pathname, $wp_cache_gzip_encoding, $meta;
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$wp_cache_key = get_wp_cache_key();
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$key = $blogcacheid . md5( $wp_cache_key );
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$wp_cache_key = $blogcacheid . $wp_cache_key;
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$cache_filename = $file_prefix . $key . '.html';
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$meta_file = $file_prefix . $key . '.meta';
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$cache_file = realpath( $blog_cache_dir . $cache_filename );
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$meta_pathname = realpath( $blog_cache_dir . 'meta/' . $meta_file );
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return compact( 'key', 'cache_filename', 'meta_file', 'cache_file', 'meta_pathname' );
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}
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function wp_cache_serve_cache_file() {
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global $key, $blogcacheid, $wp_cache_request_uri, $file_prefix, $blog_cache_dir, $meta_file, $cache_file, $cache_filename, $wp_super_cache_debug, $meta_pathname, $wp_cache_gzip_encoding, $meta;
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global $wp_cache_object_cache;
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extract( wp_super_cache_init() );
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if ( wp_cache_user_agent_is_rejected() ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "No wp-cache file served as user agent rejected.", 5 );
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return false;
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}
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if ( $wp_cache_object_cache && wp_cache_get_cookies_values() == '' ) {
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if ( !empty( $_GET ) ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Non empty GET request. Not serving request from object cache", 1 );
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return false;
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}
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$oc_key = get_oc_key();
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$meta_filename = $oc_key . ".meta";
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if ( gzip_accepted() ) {
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$oc_key .= ".gz";
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$meta_filename .= ".gz";
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}
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$cache = wp_cache_get( $oc_key, 'supercache' );
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$meta = unserialize( wp_cache_get( $meta_filename, 'supercache' ) );
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if ( is_array( $meta ) == false ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Meta array from object cache corrupt. Ignoring cache.", 1 );
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return true;
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}
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} elseif ( file_exists( $cache_file ) ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "wp-cache file exists", 5 );
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if ( !( $meta = unserialize( @file_get_contents( $meta_pathname) ) ) ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "couldn't load wp-cache meta file", 5 );
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return true;
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}
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if ( is_array( $meta ) == false ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "meta array corrupt, deleting $meta_pathname and $cache_file", 1 );
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@unlink( $meta_pathname );
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@unlink( $cache_file );
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return true;
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}
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} else {
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// last chance, check if a supercache file exists. Just in case .htaccess rules don't work on this host
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$file = get_current_url_supercache_dir() . "index.html";
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if ( wp_cache_get_cookies_values() == '' && empty( $_GET ) && file_exists( $file ) ) {
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header( "Content-type: text/html; charset=UTF-8" ); // UTF-8 hard coded is bad but we don't know what it is this early in the process
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header( "Vary: Accept-Encoding, Cookie" );
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header( "Cache-Control: max-age=300, must-revalidate" );
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header( "WP-Cache: Served supercache file from PHP" );
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readfile( $file );
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Served page from supercache file. Mod rewrite rules may be broken or missing.", 5 );
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die();
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} else {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "No wp-cache file exists. Must generate a new one.", 5 );
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return false;
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}
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}
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$cache_file = do_cacheaction( 'wp_cache_served_cache_file', $cache_file );
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// Sometimes the gzip headers are lost. If this is a gzip capable client, send those headers.
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if( $wp_cache_gzip_encoding && !in_array( 'Content-Encoding: ' . $wp_cache_gzip_encoding, $meta[ 'headers' ] ) ) {
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$meta[ 'headers' ][ 'Content-Encoding' ] = 'Content-Encoding: ' . $wp_cache_gzip_encoding;
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$meta[ 'headers' ][ 'Vary' ] = 'Vary: Accept-Encoding, Cookie';
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "added gzip headers before serving.", 1 );
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}
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foreach ($meta[ 'headers' ] as $t => $header) {
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// godaddy fix, via http://blog.gneu.org/2008/05/wp-supercache-on-godaddy/ and http://www.littleredrails.com/blog/2007/09/08/using-wp-cache-on-godaddy-500-error/
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if( strpos( $header, 'Last-Modified:' ) === false )
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header($header);
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}
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header( 'WP-Super-Cache: WP-Cache' );
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if ( $wp_cache_object_cache ) {
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if ( $cache ) {
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if ( $meta[ 'dynamic' ] ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Serving wp-cache dynamic file from object cache", 5 );
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eval( $cache );
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} else {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Serving wp-cache static file from object cache", 5 );
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echo $cache;
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}
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "exit request", 5 );
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die();
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}
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} else {
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if ( $meta[ 'dynamic' ] ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Serving wp-cache dynamic file", 5 );
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include($cache_file);
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} else {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Serving wp-cache static file", 5 );
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readfile( $cache_file );
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}
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "exit request", 5 );
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die();
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}
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}
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if(defined('DOING_CRON')) {
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extract( wp_super_cache_init() );
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return true;
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}
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if ( !isset( $wp_super_cache_late_init ) || ( isset( $wp_super_cache_late_init ) && false == $wp_super_cache_late_init ) ) {
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wp_cache_serve_cache_file();
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}
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function wp_cache_postload() {
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global $cache_enabled, $wp_super_cache_late_init, $wp_super_cache_debug;
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if ( !$cache_enabled || isset( $_GET[ 'preview' ] ) )
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return true;
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if ( isset( $wp_super_cache_late_init ) && true == $wp_super_cache_late_init ) {
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Supercache Late Init: add wp_cache_serve_cache_file to init", 3 );
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add_action( 'init', 'wp_cache_late_loader', 9999 );
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} else {
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wp_super_cache_init();
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wp_cache_phase2();
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}
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}
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function wp_cache_late_loader() {
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global $wp_super_cache_debug;
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Supercache Late Loader running on init", 3 );
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wp_cache_serve_cache_file();
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wp_cache_phase2();
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}
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function wp_cache_get_cookies_values() {
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$string = '';
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while ($key = key($_COOKIE)) {
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if ( preg_match( "/^wp-postpass|^wordpress|^comment_author_/", $key ) ) {
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if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Cookie detected: $key", 5 );
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$string .= $_COOKIE[ $key ] . ",";
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}
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next($_COOKIE);
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}
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reset($_COOKIE);
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// If you use this hook, make sure you update your .htaccess rules with the same conditions
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$string = do_cacheaction( 'wp_cache_get_cookies_values', $string );
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return $string;
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}
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function add_cacheaction( $action, $func ) {
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global $wp_supercache_actions;
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$wp_supercache_actions[ $action ][] = $func;
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}
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function do_cacheaction( $action, $value = '' ) {
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global $wp_supercache_actions;
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if( is_array( $wp_supercache_actions[ $action ] ) ) {
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$actions = $wp_supercache_actions[ $action ];
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foreach( $actions as $func ) {
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$value = $func( $value );
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}
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}
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return $value;
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}
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// From http://wordpress.org/extend/plugins/wordpress-mobile-edition/ by Alex King
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function wp_cache_check_mobile( $cache_key ) {
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global $wp_cache_mobile_enabled, $wp_cache_mobile_browsers;
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if( !isset( $wp_cache_mobile_enabled ) || false == $wp_cache_mobile_enabled )
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return $cache_key;
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if (!isset($_SERVER["HTTP_USER_AGENT"])) {
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return $cache_key;
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}
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$browsers = explode( ',', $wp_cache_mobile_browsers );
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foreach ($browsers as $browser) {
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if (strstr($_SERVER["HTTP_USER_AGENT"], trim( $browser ))) {
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if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "mobile browser detected: " . $_SERVER[ "HTTP_USER_AGENT" ], 5 );
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return $cache_key . $browser;
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}
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}
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return $cache_key;
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}
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function wp_cache_debug( $message, $level = 1 ) {
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global $wp_cache_debug_level, $wp_cache_debug_log, $wp_cache_debug_email, $cache_path, $wp_cache_debug_ip, $wp_super_cache_debug;
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if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug == false )
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return false;
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if ( isset( $wp_cache_debug_email ) == false && isset( $wp_cache_debug_log ) == false )
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return false;
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if ( isset( $wp_cache_debug_level ) == false )
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$wp_cache_debug_level = 1;
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if ( $wp_cache_debug_level < $level )
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return false;
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if ( isset( $wp_cache_debug_ip ) && $wp_cache_debug_ip != '' && $wp_cache_debug_ip != $_SERVER[ 'REMOTE_ADDR' ] )
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return false;
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if ( isset( $wp_cache_debug_log ) && $wp_cache_debug_log != '' ) {
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error_log( date( 'H:i:s' ) . " " . $_SERVER[ 'REQUEST_URI' ] . " " . $message . "\n", 3, $cache_path . str_replace( '/', '', str_replace( '..', '', $wp_cache_debug_log ) ) );
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}
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if ( isset( $wp_cache_debug_email ) && $wp_cache_debug_email != '' ) {
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$message .= "\n\nDisable these emails by commenting out or deleting the line containing\n\$wp_cache_debug_email in wp-content/wp-cache-config.php on your server.\n";
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mail( $wp_cache_debug_email, '[' . addslashes( $_SERVER[ 'HTTP_HOST' ] ) . "] WP Super Cache Debug", $message );
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}
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}
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function wp_cache_user_agent_is_rejected() {
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global $cache_rejected_user_agent;
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if (!function_exists('apache_request_headers')) return false;
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$headers = apache_request_headers();
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if (!isset($headers["User-Agent"])) return false;
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foreach ($cache_rejected_user_agent as $expr) {
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if (strlen($expr) > 0 && stristr($headers["User-Agent"], $expr))
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return true;
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}
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return false;
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}
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function get_current_url_supercache_dir() {
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global $cached_direct_pages, $cache_path, $wp_cache_request_uri;
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$uri = preg_replace('/[ <>\'\"\r\n\t\(\)]/', '', str_replace( '/index.php', '/', str_replace( '..', '', preg_replace("/(\?.*)?$/", '', $wp_cache_request_uri ) ) ) );
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$uri = str_replace( '\\', '', $uri );
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$dir = strtolower(preg_replace('/:.*$/', '', $_SERVER["HTTP_HOST"])) . $uri; // To avoid XSS attacks
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if ( function_exists( "apply_filters" ) )
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$dir = apply_filters( 'supercache_dir', $dir );
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$dir = $cache_path . 'supercache/' . $dir . '/';
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if( is_array( $cached_direct_pages ) && in_array( $_SERVER[ 'REQUEST_URI' ], $cached_direct_pages ) ) {
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$dir = ABSPATH . $uri . '/';
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}
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$dir = str_replace( '//', '/', $dir );
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if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "supercache dir: $dir", 5 );
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return $dir;
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}
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function get_oc_version() {
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$wp_cache_oc_key = wp_cache_get( "wp_cache_oc_key" );
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if ( ! $wp_cache_oc_key ) {
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$wp_cache_oc_key[ 'key' ] = reset_oc_version();
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} elseif ( $wp_cache_oc_key[ 'ts' ] < time() - 600 )
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wp_cache_set( "wp_cache_oc_key", array( 'ts' => time(), 'key' => $wp_cache_oc_key[ 'key' ] ) );
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return $wp_cache_oc_key[ 'key' ];
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}
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function reset_oc_version( $version = 1 ) {
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if ( $version == 1 )
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$version = mt_rand();
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wp_cache_set( "wp_cache_oc_key", array( 'ts' => time(), 'key' => $version ) );
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return $version;
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}
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function get_oc_key( $url = false ) {
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global $wp_cache_gzip_encoding;
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if ( $url ) {
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$key = strtolower( preg_replace( '/:.*$/', '', $_SERVER[ "HTTP_HOST" ] ) ) . $url;
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} else {
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$key = get_current_url_supercache_dir();
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}
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return $key . $wp_cache_gzip_encoding . get_oc_version();
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}
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?>
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