<?php

function wp_cache_phase2() {

	global $cache_filename, $cache_acceptable_files, $wp_cache_gzip_encoding, $super_cache_enabled, $cache_rebuild_files, $wp_cache_gmt_offset, $wp_cache_blog_charset, $wp_cache_last_gc;

	global $cache_max_time, $wp_cache_not_logged_in, $wp_cache_request_uri, $super_cache_enabled;

	if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'In WP Cache Phase 2', 5 );

	$wp_cache_gmt_offset   = get_option( 'gmt_offset' ); // caching for later use when wpdb is gone. http://wordpress.org/support/topic/224349

	$wp_cache_blog_charset = get_option( 'blog_charset' );

	wp_cache_mutex_init();

	if(function_exists('add_action') && ( !defined( 'WPLOCKDOWN' ) || ( defined( 'WPLOCKDOWN' ) && constant( 'WPLOCKDOWN' ) == '0' ) ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Setting up WordPress actions', 5 );

		// Post ID is received

		add_action('publish_post', 'wp_cache_post_edit', 0);

		add_action('edit_post', 'wp_cache_post_change', 0); // leaving a comment called edit_post

		add_action('delete_post', 'wp_cache_post_edit', 0);

		add_action('publish_phone', 'wp_cache_post_edit', 0);

		// Coment ID is received

		add_action('trackback_post', 'wp_cache_get_postid_from_comment', 99);

		add_action('pingback_post', 'wp_cache_get_postid_from_comment', 99);

		add_action('comment_post', 'wp_cache_get_postid_from_comment', 99);

		add_action('edit_comment', 'wp_cache_get_postid_from_comment', 99);

		add_action('wp_set_comment_status', 'wp_cache_get_postid_from_comment', 99, 2);

		// No post_id is available

		add_action('switch_theme', 'wp_cache_no_postid', 99); 

		add_action('edit_user_profile_update', 'wp_cache_no_postid', 99); 

		add_action('wp_cache_gc','wp_cache_gc_cron');

		do_cacheaction( 'add_cacheaction' );

	}

	if ( is_admin() ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching wp-admin requests.', 5 );

		return false;

	}

	if ( $_SERVER["REQUEST_METHOD"] == 'POST' || !empty( $_POST ) || get_option( 'gzipcompression' ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching POST request.', 5 );

		return false;

	}

	if ( isset( $_GET[ 'preview' ] ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching preview post.', 2 );

		return false;

	}

	if ( !empty( $_GET ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Supercache caching disabled. Non empty GET request.', 5 );

		$super_cache_enabled = false;

	}

	if ( $wp_cache_not_logged_in && is_user_logged_in() && !is_feed() && !is_admin() ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) {

			wp_cache_debug( 'not caching for logged in user', 5 ); 

			register_shutdown_function( 'wpcache_logged_in_message' );

		}

		return false;

	}

	$script = basename($_SERVER['PHP_SELF']);

	if (!in_array($script, $cache_acceptable_files) && wp_cache_is_rejected($wp_cache_request_uri)) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'URI rejected. Not Caching', 2 );

		return false;

	}

	if (wp_cache_user_agent_is_rejected()) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "USER AGENT ({$_SERVER[ 'HTTP_USER_AGENT' ]}) rejected. Not Caching", 4 );

		return;

	}

	if($wp_cache_gzip_encoding)

		header('Vary: Accept-Encoding, Cookie');

	else

		header('Vary: Cookie');

	ob_start( 'wp_cache_ob_callback' ); 

	if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Created output buffer', 4 );

	// restore old supercache file temporarily

	if( $super_cache_enabled && $cache_rebuild_files ) {

		$user_info = wp_cache_get_cookies_values();

		$do_cache = apply_filters( 'do_createsupercache', $user_info );

		if( $user_info == '' || $do_cache === true ) {

			$dir = get_current_url_supercache_dir();

			$files_to_check = array( $dir . 'index.html', $dir . 'index.html.gz' );

			foreach( $files_to_check as $cache_file ) {

				if( !@file_exists( $cache_file . '.needs-rebuild' ) )

					continue;

				$mtime = @filemtime($cache_file . '.needs-rebuild');

				if( $mtime && (time() - $mtime) < 30 ) {

					if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Rebuild file renamed to cache file temporarily", 3 );

					@rename( $cache_file . '.needs-rebuild', $cache_file );

				}

				// cleanup old files or if rename fails

				if( @file_exists( $cache_file . '.needs-rebuild' ) ) {

					if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Rebuild file deleted", 3 );

					@unlink( $cache_file . '.needs-rebuild' );

				}

			}

		}

	}

	if( !isset( $cache_max_time ) )

		$cache_max_time = 600;

	$last_gc = get_option( "wpsupercache_gc_time" );

	if( !$last_gc ) {

		update_option( 'wpsupercache_gc_time', time() );

	}

	$next_gc = $cache_max_time < 1800 ? $cache_max_time : 600;

	if( $last_gc < ( time() - $next_gc ) ) {

		update_option( 'wpsupercache_gc_time', time() );

		global $wp_cache_shutdown_gc;

		if( !isset( $wp_cache_shutdown_gc ) || $wp_cache_shutdown_gc == 0 ) {

			if(!wp_next_scheduled('wp_cache_gc')) {

				wp_schedule_single_event(time() + 10 , 'wp_cache_gc');

				if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'scheduled wp_cache_gc for 10 seconds time.', 5 );

			}

		} else {

			global $time_to_gc_cache;

			$time_to_gc_cache = 1; // tell the "shutdown gc" to run!

		}

	}

}

function wpcache_logged_in_message() {

	echo '<!-- WP Super Cache did not cache this page because you are logged in and "Don\'t cache pages for logged in users" is enabled. -->';

}

if ( !function_exists( 'wp_cache_user_agent_is_rejected' ) ) {

	function wp_cache_user_agent_is_rejected() {

		global $cache_rejected_user_agent;

		if (!function_exists('apache_request_headers')) return false;

		$headers = apache_request_headers();

		if (!isset($headers["User-Agent"])) return false;

		foreach ($cache_rejected_user_agent as $expr) {

			if (strlen($expr) > 0 && stristr($headers["User-Agent"], $expr))

				return true;

		}

		return false;

	}

}

function wp_cache_get_response_headers() {

	if(function_exists('apache_response_headers')) {

		flush();

		$headers = apache_response_headers();

	} else if(function_exists('headers_list')) {

		$headers = array();

		foreach(headers_list() as $hdr) {

			list($header_name, $header_value) = explode(': ', $hdr, 2);

			$headers[$header_name] = $header_value;

		}

	} else

		$headers = null;

	return $headers;

}

function wp_cache_is_rejected($uri) {

	global $cache_rejected_uri;

	$auto_rejected = array( '/wp-admin/', 'xmlrpc.php', 'wp-app.php' );

	foreach( $auto_rejected as $u ) {

		if( strstr( $uri, $u ) )

			return true; // we don't allow caching of wp-admin for security reasons

	}

	foreach ($cache_rejected_uri as $expr) {

		if( $expr != '' && preg_match( "~$expr~", $uri ) )

			return true;

	}

	return false;

}

function wp_cache_mutex_init() {

	global $use_flock, $mutex, $cache_path, $mutex_filename, $sem_id, $blog_cache_dir, $wp_cache_mutex_disabled;

	if( isset( $wp_cache_mutex_disabled ) && $wp_cache_mutex_disabled )

		return true;

	if(!is_bool($use_flock)) {

		if(function_exists('sem_get')) 

			$use_flock = false;

		else

			$use_flock = true;

	}

	$mutex = false;

	if ($use_flock)  {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Created mutex lock on filename: {$blog_cache_dir}{$mutex_filename}", 5 );

		$mutex = @fopen($blog_cache_dir . $mutex_filename, 'w');

	} else {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Created mutex lock on semaphore: $sem_id", 5 );

		$mutex = @sem_get($sem_id, 1, 0644 | IPC_CREAT, 1);

	}

}

function wp_cache_writers_entry() {

	global $use_flock, $mutex, $cache_path, $mutex_filename, $wp_cache_mutex_disabled;

	if( isset( $wp_cache_mutex_disabled ) && $wp_cache_mutex_disabled )

		return true;

	if( !$mutex ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "(writers entry) mutex lock not created. not caching.", 2 );

		return false;

	}

	if ($use_flock) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "grabbing lock using flock()", 5 );

		flock($mutex,  LOCK_EX);

	} else {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "grabbing lock using sem_acquire()", 5 );

		sem_acquire($mutex);

	}

	return true;

}

function wp_cache_writers_exit() {

	global $use_flock, $mutex, $cache_path, $mutex_filename, $wp_cache_mutex_disabled;

	if( isset( $wp_cache_mutex_disabled ) && $wp_cache_mutex_disabled )

		return true;

	if( !$mutex ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "(writers exit) mutex lock not created. not caching.", 2 );

		return false;

	}

	if ($use_flock) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "releasing lock using flock()", 5 );

		flock($mutex,  LOCK_UN);

	} else {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "releasing lock using sem_release()", 5 );

		sem_release($mutex);

	}

}

function get_current_url_supercache_dir() {

	global $cached_direct_pages, $cache_path, $wp_cache_request_uri;

	$uri = preg_replace('/[ <>\'\"\r\n\t\(\)]/', '', str_replace( '/index.php', '/', str_replace( '..', '', preg_replace("/(\?.*)?$/", '', $wp_cache_request_uri ) ) ) );

	$uri = str_replace( '\\', '', $uri );

	$dir = strtolower(preg_replace('/:.*$/', '',  $_SERVER["HTTP_HOST"])) . $uri; // To avoid XSS attacks

	$dir = apply_filters( 'supercache_dir', $dir );

	$dir = trailingslashit( $cache_path . 'supercache/' . $dir );

	if( is_array( $cached_direct_pages ) && in_array( $_SERVER[ 'REQUEST_URI' ], $cached_direct_pages ) ) {

		$dir = trailingslashit( ABSPATH . $uri );

	}

	$dir = str_replace( '//', '/', $dir );

	if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "supercache dir: $dir", 5 );

	return $dir;

}

function wp_cache_ob_callback( $buffer ) {

	global $wp_cache_pages;

	if( defined( 'DONOTCACHEPAGE' ) )

		return $buffer;

	if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Output buffer callback', 4 );

	if ( isset( $wp_cache_pages[ 'single' ] ) && $wp_cache_pages[ 'single' ] == 1 && is_single() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'pages' ] ) && $wp_cache_pages[ 'pages' ] == 1 && is_page() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'archives' ] ) && $wp_cache_pages[ 'archives' ] == 1 && is_archive() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'tag' ] ) && $wp_cache_pages[ 'tag' ] == 1 && is_tag() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'category' ] ) && $wp_cache_pages[ 'category' ] == 1 && is_category() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'frontpage' ] ) && $wp_cache_pages[ 'frontpage' ] == 1 && is_front_page() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'home' ] ) && $wp_cache_pages[ 'home' ] == 1 && is_home() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'search' ] ) && $wp_cache_pages[ 'search' ] == 1 && is_search() ) {

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'feed' ] ) && $wp_cache_pages[ 'feed' ] == 1 && is_feed() ) {

		return $buffer;

	}

	$buffer = &wp_cache_get_ob( $buffer );

	wp_cache_shutdown_callback();

	return $buffer;

}

function wp_cache_get_ob(&$buffer) {

	global $cache_path, $cache_filename, $meta_file, $wp_start_time, $supercachedir;

	global $new_cache, $wp_cache_meta, $file_expired, $blog_id, $cache_compression;

	global $wp_cache_gzip_encoding, $super_cache_enabled, $cached_direct_pages;

	global $wp_cache_404, $gzsize, $supercacheonly, $wp_cache_gzip_first, $wp_cache_gmt_offset;

	global $blog_cache_dir, $wp_cache_request_uri, $wp_supercache_cache_list;

	$new_cache = true;

	$wp_cache_meta = '';

	/* Mode paranoic, check for closing tags 

	 * we avoid caching incomplete files */

	if ( $buffer == '' ) {

		$new_cache = false;

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) {

			wp_cache_debug( "Buffer is blank. Output buffer may have been corrupted by another plugin or this is a redirected URL. Look for text 'ob_start' in the files of your plugins directory.", 2 );

			$buffer .= "\n<!-- Page not cached by WP Super Cache. Blank Page. Check output buffer usage by plugins. -->\n";

		}

	}

	if ( $wp_cache_404 && false == apply_filters( 'wpsupercache_404', false ) ) {

		$new_cache = false;

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) {

			wp_cache_debug( "404 file not found not cached", 2 );

			$buffer .= "\n<!-- Page not cached by WP Super Cache. 404. -->\n";

		}

	}

	if (!preg_match('/(<\/html>|<\/rss>|<\/feed>)/i',$buffer) ) {

		$new_cache = false;

		if( false === strpos( $_SERVER[ 'REQUEST_URI' ], 'robots.txt' ) ) {

			if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) {

				wp_cache_debug( "No closing html tag. Not caching.", 2 );

				$buffer .= "\n<!-- Page not cached by WP Super Cache. No closing HTML tag. Check your theme. -->\n";

			}

		} else {

			if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "robots.txt detected. Not caching.", 2 );

		}

	}

	if( !$new_cache )

		return $buffer;

	$duration = wp_cache_microtime_diff($wp_start_time, microtime());

	$duration = sprintf("%0.3f", $duration);

	$buffer .= "\n<!-- Dynamic page generated in $duration seconds. -->\n";

	if( !wp_cache_writers_entry() ) {

		$buffer .= "\n<!-- Page not cached by WP Super Cache. Could not get mutex lock. -->\n";

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Could not get mutex lock. Not caching.", 1 );

		return $buffer;

	}

	$dir = get_current_url_supercache_dir();

	$supercachedir = $cache_path . 'supercache/' . preg_replace('/:.*$/', '',  $_SERVER["HTTP_HOST"]);

	if( !empty( $_GET ) || is_feed() || ( $super_cache_enabled == true && is_dir( substr( $supercachedir, 0, -1 ) . '.disabled' ) ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Supercache disabled: GET or feed detected or disabled by config.", 2 );

		$super_cache_enabled = false;

	}

	$tmp_wpcache_filename = $cache_path . uniqid( mt_rand(), true ) . '.tmp';

	// Don't create wp-cache files for anon users

	$supercacheonly = false;

	if( $super_cache_enabled && wp_cache_get_cookies_values() == '' ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Anonymous user detected. Only creating Supercache file.", 3 );

		$supercacheonly = true;

	}

	if( !$supercacheonly ) {

		if ( !@file_exists( $blog_cache_dir . $cache_filename ) || ( @file_exists( $blog_cache_dir . $cache_filename ) && ( time() - @filemtime( $blog_cache_dir . $cache_filename ) ) > 5 ) ) {

			$fr = @fopen($tmp_wpcache_filename, 'w');

			if (!$fr) {

				if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Error. Supercache could not write to " . str_replace( ABSPATH, '', $cache_path ) . $cache_filename, 1 );

				$buffer .= "<!-- File not cached! Super Cache Couldn't write to: " . str_replace( ABSPATH, '', $cache_path ) . $cache_filename . " -->\n";

				return $buffer;

			}

		}

	}

	if( $super_cache_enabled ) {