<?php

function wp_cache_phase2() {

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

	global $cache_max_time, $wp_cache_request_uri, $super_cache_enabled, $wp_cache_object_cache, $cache_time_interval, $wp_cache_no_cache_for_get;

	global $cache_enabled, $wp_cache_gmt_offset, $wp_cache_blog_charset, $cache_schedule_type, $cache_scheduled_time, $cache_schedule_interval;

	if ( $cache_enabled == false ) {

		if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Caching disabled! quiting!", 1 );

		return false;

	}

	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 );

		add_action( 'template_redirect', 'wp_super_cache_query_vars' );

		// Post ID is received

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

		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_update_nav_menu', 'wp_cache_clear_cache_on_menu' );

		add_action('wp_cache_gc','wp_cache_gc_cron');

		add_action( 'clean_post_cache', 'wp_cache_post_edit' );

		add_filter( 'supercache_filename_str', 'wp_cache_check_mobile' );

		add_action( 'wp_cache_gc_watcher', 'wp_cache_gc_watcher' );

		do_cacheaction( 'add_cacheaction' );

	}

	if ( $wp_cache_no_cache_for_get && false == empty( $_GET ) && false == defined( 'DOING_CRON' ) ) {

		if ( isset( $wp_super_cache_debug ) && $wp_super_cache_debug ) wp_cache_debug( "Non empty GET request. Caching disabled on settings page.", 1 );

		return false;

	}

	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 ( $wp_cache_object_cache && !empty( $_GET ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching GET request while object cache storage enabled.', 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. Only using wp-cache. Non empty GET request.', 5 );

		$super_cache_enabled = 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 )

			wpcache_do_rebuild( get_current_url_supercache_dir() );

	}

	schedule_wp_gc();

}

function wpcache_do_rebuild( $dir ) {

	$dir = trailingslashit( $dir );

	$files_to_check = get_all_supercache_filenames( $dir );

	foreach( $files_to_check as $cache_file ) {

		$cache_file = $dir . $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: $cache_file", 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' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Rebuild file deleted: {$cache_file}.needs-rebuild", 3 );

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

		}

	}

}

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;

		if ( false == is_array( $cache_rejected_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

	}

	if ( false == is_array( $cache_rejected_uri ) )

		return false;

	foreach ( $cache_rejected_uri as $expr ) {

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

			return true;

	}

	return false;

}

function wp_cache_mutex_init() {

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

	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 )  {

		setup_blog_cache_dir();

		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 $mutex, $wp_cache_mutex_disabled, $use_flock;

	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 $mutex, $wp_cache_mutex_disabled, $use_flock;

	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 wp_super_cache_query_vars() {

	global $wp_super_cache_query;

	if ( is_search() )

		$wp_super_cache_query[ 'is_search' ] = 1;

	if ( is_page() )

		$wp_super_cache_query[ 'is_page' ] = 1;

	if ( is_archive() )

		$wp_super_cache_query[ 'is_archive' ] = 1;

	if ( is_tag() )

		$wp_super_cache_query[ 'is_tag' ] = 1;

	if ( is_single() )

		$wp_super_cache_query[ 'is_single' ] = 1;

	if ( is_category() )

		$wp_super_cache_query[ 'is_category' ] = 1;

	if ( is_front_page() )

		$wp_super_cache_query[ 'is_front_page' ] = 1;

	if ( is_home() )

		$wp_super_cache_query[ 'is_home' ] = 1;

	if ( is_author() )

		$wp_super_cache_query[ 'is_author' ] = 1;

	if ( is_feed() )

		$wp_super_cache_query[ 'is_feed' ] = 1;

}

function wp_cache_ob_callback( $buffer ) {

	global $wp_cache_pages, $wp_query, $wp_super_cache_query;

	$buffer = apply_filters( 'wp_cache_ob_callback_filter', $buffer );

	if( defined( 'DONOTCACHEPAGE' ) ) {

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'DONOTCACHEPAGE defined. Caching disabled.', 2 );

		return $buffer;

	}

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

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

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

		return $buffer;

	} elseif ( isset( $wp_cache_pages[ 'author' ] ) && $wp_cache_pages[ 'author' ] == 1 && isset( $wp_super_cache_query[ 'is_author' ] ) ) {

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

		return $buffer;

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

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

		return $buffer;

	}

	if ( !isset( $wp_query ) )

		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'wp_cache_ob_callback: WARNING! $query not defined but the plugin has worked around that problem.', 4 );

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

	$buffer = &wp_cache_get_ob( $buffer );

	wp_cache_shutdown_callback();

	return $buffer;

}

function wp_cache_append_tag( &$buffer ) {

	global $wp_cache_gmt_offset, $wp_super_cache_comments;

	global $cache_enabled, $super_cache_enabled;

	if ( false == isset( $wp_super_cache_comments ) )

		$wp_super_cache_comments = 1;

	if ( $wp_super_cache_comments == 0 )

		return false;

	$timestamp = gmdate('Y-m-d H:i:s', (time() + ( $wp_cache_gmt_offset * 3600)));

	if ( $cache_enabled || $super_cache_enabled ) {

		$buffer .= "\n<!-- Cached page generated by WP-Super-Cache on $timestamp -->\n";

	} else {

		$buffer .= "\n<!-- Live page served on $timestamp -->\n";

	}

}

function wp_cache_add_to_buffer( &$buffer, $text ) {

	global $wp_super_cache_comments;

	if ( false == isset( $wp_super_cache_comments ) )

		$wp_super_cache_comments = 1;

	if ( $wp_super_cache_comments == 0 )

		return false;

	$buffer .= "\n<!-- $text -->";

}

function wp_cache_get_ob(&$buffer) {