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wp-cache-phase2.php
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wp-cache-phase2.php
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<?php
function gzip_accepted(){
if ( 1 == ini_get( 'zlib.output_compression' ) || "on" == strtolower( ini_get( 'zlib.output_compression' ) ) ) // don't compress WP-Cache data files when PHP is already doing it
return false;
if ( !isset( $_SERVER[ 'HTTP_ACCEPT_ENCODING' ] ) || ( isset( $_SERVER[ 'HTTP_ACCEPT_ENCODING' ] ) && strpos( $_SERVER[ 'HTTP_ACCEPT_ENCODING' ], 'gzip' ) === false ) ) return false;
return 'gzip';
}
function setup_blog_cache_dir() {
global $blog_cache_dir, $cache_path;
if( false == @is_dir( $blog_cache_dir ) ) {
@mkdir( $cache_path . "blogs" );
@mkdir( $blog_cache_dir );
}
if( false == @is_dir( $blog_cache_dir . 'meta' ) )
@mkdir( $blog_cache_dir . 'meta' );
}
function get_wp_cache_key( $url = false ) {
global $wp_cache_request_uri, $wp_cache_gzip_encoding, $WPSC_HTTP_HOST;
if ( ! $url ) {
$url = $wp_cache_request_uri;
}
$server_port = isset( $_SERVER[ 'SERVER_PORT' ] ) ? intval( $_SERVER[ 'SERVER_PORT' ] ) : 0;
return do_cacheaction( 'wp_cache_key', wp_cache_check_mobile( $WPSC_HTTP_HOST . $server_port . preg_replace('/#.*$/', '', str_replace( '/index.php', '/', $url ) ) . $wp_cache_gzip_encoding . wp_cache_get_cookies_values() ) );
}
function wp_super_cache_init() {
global $wp_cache_key, $key, $blogcacheid, $file_prefix, $blog_cache_dir, $meta_file, $cache_file, $cache_filename, $meta_pathname;
$wp_cache_key = get_wp_cache_key();
$key = $blogcacheid . md5( $wp_cache_key );
$wp_cache_key = $blogcacheid . $wp_cache_key;
$cache_filename = $file_prefix . $key . '.php';
$meta_file = $file_prefix . $key . '.php';
$cache_file = wpsc_get_realpath( $blog_cache_dir ) . '/' . $cache_filename;
$meta_pathname = wpsc_get_realpath( $blog_cache_dir . 'meta/' ) . '/' . $meta_file;
return compact( 'key', 'cache_filename', 'meta_file', 'cache_file', 'meta_pathname' );
}
function wp_cache_serve_cache_file() {
global $key, $blogcacheid, $wp_cache_request_uri, $file_prefix, $blog_cache_dir, $meta_file, $cache_file, $cache_filename, $meta_pathname, $wp_cache_gzip_encoding, $meta;
global $wp_cache_object_cache, $cache_compression, $wp_cache_slash_check, $wp_supercache_304, $wp_cache_home_path, $wp_cache_no_cache_for_get;
global $wp_cache_disable_utf8, $wp_cache_mfunc_enabled, $wpsc_served_header;
if ( wpsc_is_backend() ) {
wp_cache_debug( 'Not serving wp-admin requests.', 5 );
return false;
}
if ( wp_cache_user_agent_is_rejected() ) {
wp_cache_debug( 'No wp-cache file served as user agent rejected.', 5 );
return false;
}
if ( $wp_cache_no_cache_for_get && false == empty( $_GET ) ) {
wp_cache_debug( 'Non empty GET request. Caching disabled on settings page. ' . wpsc_dump_get_request(), 1 );
return false;
}
extract( wp_super_cache_init() ); // $key, $cache_filename, $meta_file, $cache_file, $meta_pathname
if ( $wp_cache_object_cache && wp_cache_get_cookies_values() == '' ) {
if ( !empty( $_GET ) ) {
wp_cache_debug( 'Non empty GET request. Not serving request from object cache. ' . wpsc_dump_get_request(), 1 );
return false;
}
$oc_key = get_oc_key();
$meta_filename = $oc_key . ".meta";
if ( gzip_accepted() ) {
$oc_key .= ".gz";
$meta_filename .= ".gz";
}
$cache = wp_cache_get( $oc_key, 'supercache' );
$meta = json_decode( wp_cache_get( $meta_filename, 'supercache' ), true );
if ( is_array( $meta ) == false ) {
wp_cache_debug( 'Meta array from object cache corrupt. Ignoring cache.', 1 );
return true;
}
} elseif ( ( $cache_file && file_exists( $cache_file ) ) || file_exists( get_current_url_supercache_dir() . 'meta-' . $cache_filename ) ) {
if ( file_exists( get_current_url_supercache_dir() . 'meta-' . $cache_filename ) ) {
$cache_file = get_current_url_supercache_dir() . $cache_filename;
$meta_pathname = get_current_url_supercache_dir() . 'meta-' . $cache_filename;
} elseif ( !file_exists( $cache_file ) ) {
wp_cache_debug( 'wp_cache_serve_cache_file: found cache file but then it disappeared!' );
return false;
}
wp_cache_debug( "wp-cache file exists: $cache_file", 5 );
if ( !( $meta = json_decode( wp_cache_get_legacy_cache( $meta_pathname ), true ) ) ) {
wp_cache_debug( "couldn't load wp-cache meta file", 5 );
return true;
}
if ( is_array( $meta ) == false ) {
wp_cache_debug( "meta array corrupt, deleting $meta_pathname and $cache_file", 1 );
@unlink( $meta_pathname );
@unlink( $cache_file );
return true;
}
} else { // no $cache_file
global $wpsc_save_headers;
// last chance, check if a supercache file exists. Just in case .htaccess rules don't work on this host
$filename = supercache_filename();
$file = get_current_url_supercache_dir() . $filename;
if ( false == file_exists( $file ) ) {
wp_cache_debug( "No Super Cache file found for current URL: $file" );
return false;
} elseif ( false == empty( $_GET ) ) {
wp_cache_debug( 'GET array not empty. Cannot serve a supercache file. ' . wpsc_dump_get_request() );
return false;
} elseif ( wp_cache_get_cookies_values() != '' ) {
wp_cache_debug( 'Cookies found. Cannot serve a supercache file. ' . wp_cache_get_cookies_values() );
return false;
} elseif ( isset( $wpsc_save_headers ) && $wpsc_save_headers ) {
wp_cache_debug( 'Saving headers. Cannot serve a supercache file.' );
return false;
}
if ( isset( $wp_cache_mfunc_enabled ) == false )
$wp_cache_mfunc_enabled = 0;
if ( false == isset( $wp_cache_home_path ) )
$wp_cache_home_path = '/';
// make sure ending slashes are ok
if ( $wp_cache_request_uri == $wp_cache_home_path || ( $wp_cache_slash_check && substr( $wp_cache_request_uri, -1 ) == '/' ) || ( $wp_cache_slash_check == 0 && substr( $wp_cache_request_uri, -1 ) != '/' ) ) {
if ( $wp_cache_mfunc_enabled == 0 ) {
// get data from file
if ( $wp_cache_gzip_encoding ) {
if ( file_exists( $file . '.gz' ) ) {
$cachefiledata = file_get_contents( $file . '.gz' );
wp_cache_debug( "Fetched gzip static page data from supercache file using PHP. File: $file.gz" );
} else {
$cachefiledata = gzencode( file_get_contents( $file ), 6, FORCE_GZIP );
wp_cache_debug( "Fetched static page data from supercache file using PHP and gzipped it. File: $file" );
}
} else {
$cachefiledata = file_get_contents( $file );
wp_cache_debug( "Fetched static page data from supercache file using PHP. File: $file" );
}
} else {
// get dynamic data from filtered file
$cachefiledata = do_cacheaction( 'wpsc_cachedata', file_get_contents( $file ) );
if ( $wp_cache_gzip_encoding ) {
$cachefiledata = gzencode( $cachefiledata, 6, FORCE_GZIP );
wp_cache_debug( "Fetched dynamic page data from supercache file using PHP and gzipped it. File: $file" );
} else {
wp_cache_debug( "Fetched dynamic page data from supercache file using PHP. File: $file" );
}
}
if ( isset( $wp_cache_disable_utf8 ) == false || $wp_cache_disable_utf8 == 0 )
header( "Content-type: text/html; charset=UTF-8" );
header( "Vary: Accept-Encoding, Cookie" );
header( "Cache-Control: max-age=3, must-revalidate" );
$size = function_exists( 'mb_strlen' ) ? mb_strlen( $cachefiledata, '8bit' ) : strlen( $cachefiledata );
if ( $wp_cache_gzip_encoding ) {
if ( isset( $wpsc_served_header ) && $wpsc_served_header ) {
header( "X-WP-Super-Cache: Served supercache gzip file from PHP" );
}
header( 'Content-Encoding: ' . $wp_cache_gzip_encoding );
header( 'Content-Length: ' . $size );
} elseif ( $wp_supercache_304 ) {
if ( isset( $wpsc_served_header ) && $wpsc_served_header ) {
header( "X-WP-Super-Cache: Served supercache 304 file from PHP" );
}
header( 'Content-Length: ' . $size );
} else {
if ( isset( $wpsc_served_header ) && $wpsc_served_header ) {
header( "X-WP-Super-Cache: Served supercache file from PHP" );
}
}
// don't try to match modified dates if using dynamic code.
if ( $wp_cache_mfunc_enabled == 0 && $wp_supercache_304 ) {
if ( function_exists( 'apache_request_headers' ) ) {
$request = apache_request_headers();
$remote_mod_time = ( isset ( $request[ 'If-Modified-Since' ] ) ) ? $request[ 'If-Modified-Since' ] : null;
} else {
if ( isset( $_SERVER[ 'HTTP_IF_MODIFIED_SINCE' ] ) )
$remote_mod_time = $_SERVER[ 'HTTP_IF_MODIFIED_SINCE' ];
else
$remote_mod_time = null;
}
$local_mod_time = gmdate("D, d M Y H:i:s",filemtime( $file )).' GMT';
if ( !is_null($remote_mod_time) && $remote_mod_time == $local_mod_time ) {
header( $_SERVER[ 'SERVER_PROTOCOL' ] . " 304 Not Modified" );
exit();
}
header( 'Last-Modified: ' . $local_mod_time );
}
echo $cachefiledata;
exit();
} else {
wp_cache_debug( 'No wp-cache file exists. Must generate a new one.' );
return false;
}
}
$cache_file = do_cacheaction( 'wp_cache_served_cache_file', $cache_file );
// Sometimes the gzip headers are lost. Make sure html returned isn't compressed!
if ( $cache_compression && $wp_cache_gzip_encoding && !in_array( 'Content-Encoding: ' . $wp_cache_gzip_encoding, $meta[ 'headers' ] ) ) {
$ungzip = true;
wp_cache_debug( 'GZIP headers not found. Force uncompressed output.', 1 );
} else {
$ungzip = false;
}
foreach ($meta[ 'headers' ] as $t => $header) {
// 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/
if( strpos( $header, 'Last-Modified:' ) === false )
header($header);
}
if ( isset( $wpsc_served_header ) && $wpsc_served_header ) {
header( 'X-WP-Super-Cache: Served WPCache cache file' );
}
if ( $wp_cache_object_cache ) {
if ( $cache ) {
if ( $ungzip ) {
// attempt to uncompress the cached file just in case it's gzipped
$uncompressed = gzuncompress( $cache );
if ( $uncompressed ) {
wp_cache_debug( 'Uncompressed gzipped cache file from object cache', 1 );
$cache = $uncompressed;
unset( $uncompressed );
}
}
if ( isset( $meta[ 'dynamic' ] ) && $meta[ 'dynamic' ] ) {
wp_cache_debug( 'Serving wp-cache dynamic file from object cache', 5 );
echo do_cacheaction( 'wpsc_cachedata', $cache );
} else {
wp_cache_debug( 'Serving wp-cache static file from object cache', 5 );
echo $cache;
}
wp_cache_debug( 'exit request', 5 );
die();
}
} else {
if ( isset( $meta[ 'dynamic' ] ) ) {
wp_cache_debug( 'Serving wp-cache dynamic file', 5 );
if ( $ungzip ) {
// attempt to uncompress the cached file just in case it's gzipped
$cache = wp_cache_get_legacy_cache( $cache_file );
$uncompressed = @gzuncompress( $cache );
if ( $uncompressed ) {
wp_cache_debug( 'Uncompressed gzipped cache file from wp-cache', 1 );
unset( $cache );
echo do_cacheaction( 'wpsc_cachedata', $uncompressed );
} else {
echo do_cacheaction( 'wpsc_cachedata', $cache );
}
} else {
echo do_cacheaction( 'wpsc_cachedata', wp_cache_get_legacy_cache( $cache_file ) );
}
} else {
wp_cache_debug( 'Serving wp-cache static file', 5 );
if ( $ungzip ) {
$cache = wp_cache_get_legacy_cache( $cache_file );
$uncompressed = gzuncompress( $cache );
if ( $uncompressed ) {
wp_cache_debug( 'Uncompressed gzipped cache file from wp-cache', 1 );
echo $uncompressed;
} else {
echo $cache;
}
} else {
echo( wp_cache_get_legacy_cache( $cache_file ) );
}
}
wp_cache_debug( 'exit request', 5 );
die();
}
}
function wp_cache_get_legacy_cache( $cache_file ) {
return substr( @file_get_contents( $cache_file ), 15 );
}
function wp_cache_postload() {
global $cache_enabled, $wp_super_cache_late_init;
if ( !$cache_enabled )
return true;
if ( isset( $wp_super_cache_late_init ) && true == $wp_super_cache_late_init ) {
wp_cache_debug( 'Supercache Late Init: add wp_cache_serve_cache_file to init', 3 );
add_action( 'init', 'wp_cache_late_loader', 9999 );
} else {
wp_super_cache_init();
wp_cache_phase2();
}
}
function wp_cache_late_loader() {
wp_cache_debug( 'Supercache Late Loader running on init', 3 );
wp_cache_serve_cache_file();
wp_cache_phase2();
}
function wp_cache_get_cookies_values() {
static $string = '';
if ( $string != '' ) {
wp_cache_debug( "wp_cache_get_cookies_values: cached: $string" );
return $string;
}
if ( defined( 'COOKIEHASH' ) )
$cookiehash = preg_quote( constant( 'COOKIEHASH' ) );
else
$cookiehash = '';
$regex = "/^wp-postpass_$cookiehash|^comment_author_$cookiehash";
if ( defined( 'LOGGED_IN_COOKIE' ) )
$regex .= "|^" . preg_quote( constant( 'LOGGED_IN_COOKIE' ) );
else
$regex .= "|^wordpress_logged_in_$cookiehash";
$regex .= "/";
while ($key = key($_COOKIE)) {
if ( preg_match( $regex, $key ) ) {
wp_cache_debug( "wp_cache_get_cookies_values: $regex Cookie detected: $key", 5 );
$string .= $_COOKIE[ $key ] . ",";
}
next($_COOKIE);
}
reset($_COOKIE);
// If you use this hook, make sure you update your .htaccess rules with the same conditions
$string = do_cacheaction( 'wp_cache_get_cookies_values', $string );
if ( $string != '' )
$string = md5( $string );
wp_cache_debug( "wp_cache_get_cookies_values: return: $string", 5 );
return $string;
}
function add_cacheaction( $action, $func ) {
global $wp_supercache_actions;
$wp_supercache_actions[ $action ][] = $func;
}
function do_cacheaction( $action, $value = '' ) {
global $wp_supercache_actions;
if ( !isset( $wp_supercache_actions ) || !is_array( $wp_supercache_actions ) )
return $value;
if( array_key_exists($action, $wp_supercache_actions) && is_array( $wp_supercache_actions[ $action ] ) ) {
$actions = $wp_supercache_actions[ $action ];
foreach( $actions as $func ) {
$value = call_user_func_array( $func, array( $value ) );
}
}
return $value;
}
function wp_cache_mobile_group( $user_agent ) {
global $wp_cache_mobile_groups;
foreach( (array)$wp_cache_mobile_groups as $name => $group ) {
foreach( (array)$group as $browser ) {
$browser = trim( strtolower( $browser ) );
if ( $browser != '' && strstr( $user_agent, $browser ) ) {
return $browser;
}
}
}
return "mobile";
}
// From https://wordpress.org/plugins/wordpress-mobile-edition/ by Alex King
function wp_cache_check_mobile( $cache_key ) {
global $wp_cache_mobile_enabled, $wp_cache_mobile_browsers, $wp_cache_mobile_prefixes;
if ( !isset( $wp_cache_mobile_enabled ) || false == $wp_cache_mobile_enabled )
return $cache_key;
wp_cache_debug( "wp_cache_check_mobile: $cache_key" );
// allow plugins to short circuit mobile check. Cookie, extra UA checks?
switch( do_cacheaction( 'wp_cache_check_mobile', $cache_key ) ) {
case "normal":
wp_cache_debug( 'wp_cache_check_mobile: desktop user agent detected by wp_cache_check_mobile action' );
return $cache_key;
break;
case "mobile":
wp_cache_debug( 'wp_cache_check_mobile: mobile user agent detected by wp_cache_check_mobile action' );
return $cache_key . "-mobile";
break;
}
if ( !isset( $_SERVER[ "HTTP_USER_AGENT" ] ) ) {
return $cache_key;
}
if ( do_cacheaction( 'disable_mobile_check', false ) ) {
wp_cache_debug( 'wp_cache_check_mobile: disable_mobile_check disabled mobile check' );
return $cache_key;
}
$browsers = explode( ',', $wp_cache_mobile_browsers );
$user_agent = strtolower( $_SERVER['HTTP_USER_AGENT'] );
foreach ($browsers as $browser) {
if ( strstr( $user_agent, trim( strtolower( $browser ) ) ) ) {
wp_cache_debug( 'mobile browser detected: ' . $_SERVER['HTTP_USER_AGENT'], 5 );
return $cache_key . '-' . wp_cache_mobile_group( $user_agent );
}
}
if (isset($_SERVER['HTTP_X_WAP_PROFILE']) )
return $cache_key . '-' . $_SERVER['HTTP_X_WAP_PROFILE'];
if (isset($_SERVER['HTTP_PROFILE']) )
return $cache_key . '-' . $_SERVER['HTTP_PROFILE'];
if ( isset( $wp_cache_mobile_prefixes ) ) {
$browsers = explode( ',', $wp_cache_mobile_prefixes );
foreach ($browsers as $browser_prefix) {
if ( substr($user_agent, 0, 4) == $browser_prefix ) {
wp_cache_debug( 'mobile browser (prefix) detected: ' . $_SERVER['HTTP_USER_AGENT'], 5 );
return $cache_key . '-' . $browser_prefix;
}
}
}
$accept = isset( $_SERVER[ 'HTTP_ACCEPT' ] ) ? strtolower( $_SERVER[ 'HTTP_ACCEPT' ] ) : '';
if (strpos($accept, 'wap') !== false) {
return $cache_key . '-' . 'wap';
}
if (isset($_SERVER['ALL_HTTP']) && strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false) {
return $cache_key . '-' . 'operamini';
}
return $cache_key;
}
/**
* Add a log message to the file, if debugging is turned on
*
* @param $message string The message that should be added to the log
* @param $level int
*/
function wp_cache_debug( $message, $level = 1 ) {
global $wp_cache_debug_log, $cache_path, $wp_cache_debug_ip, $wp_super_cache_debug;
// If either of the debug or log globals aren't set, then we can stop
if ( !isset($wp_super_cache_debug)
|| !isset($wp_cache_debug_log) )
return false;
// If either the debug or log globals are false or empty, we can stop
if ( $wp_super_cache_debug == false
|| $wp_cache_debug_log == '' )
return false;
// If the debug_ip has been set, but it doesn't match the ip of the requester
// then we can stop.
if ( isset($wp_cache_debug_ip)
&& $wp_cache_debug_ip != ''
&& $wp_cache_debug_ip != $_SERVER[ 'REMOTE_ADDR' ] )
return false;
// Log message: Date URI Message
$log_message = date('H:i:s') . " " . getmypid() . " {$_SERVER['REQUEST_URI']} {$message}" . PHP_EOL;
// path to the log file in the cache folder
$log_file = $cache_path . str_replace('/', '', str_replace('..', '', $wp_cache_debug_log));
if ( ! file_exists( $log_file ) && function_exists( 'wpsc_create_debug_log' ) ) {
global $wp_cache_debug_username;
if ( ! isset( $wp_cache_debug_username ) ) {
$wp_cache_debug_username = '';
}
wpsc_create_debug_log( $wp_cache_debug_log, $wp_cache_debug_username );
}
error_log( $log_message, 3, $log_file );
}
function wpsc_dump_get_request() {
static $string;
if ( isset( $string) ) {
return $string;
}
if ( function_exists( 'wp_json_encode' ) ) {
$string = wp_json_encode( $_GET );
} else {
$string = json_encode( $_GET );
}
return $string;
}
function wpsc_is_backend() {
static $is_backend;
if ( isset( $is_backend ) ) {
return $is_backend;
}
$is_backend = is_admin();
if ( $is_backend ) {
return $is_backend;
}
$script = isset( $_SERVER['PHP_SELF'] ) ? basename( $_SERVER['PHP_SELF'] ) : '';
if ( $script !== 'index.php' ) {
if ( in_array( $script, array( 'wp-login.php', 'xmlrpc.php', 'wp-cron.php' ) ) ) {
$is_backend = true;
} elseif ( defined( 'DOING_CRON' ) && DOING_CRON ) {
$is_backend = true;
} elseif ( PHP_SAPI == 'cli' || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
$is_backend = true;
}
}
return $is_backend;
}
function get_supercache_dir( $blog_id = 0 ) {
global $cache_path;
if ( $blog_id == 0 ) {
$home = get_option( 'home' );
} else {
$home = get_blog_option( $blog_id, 'home' );
}
return trailingslashit( apply_filters( 'wp_super_cache_supercachedir', $cache_path . 'supercache/' . trailingslashit( strtolower( preg_replace( '/:.*$/', '', str_replace( 'http://', '', str_replace( 'https://', '', $home ) ) ) ) ) ) );
}
function get_current_url_supercache_dir( $post_id = 0 ) {
global $cached_direct_pages, $cache_path, $wp_cache_request_uri, $WPSC_HTTP_HOST, $wp_cache_home_path;
static $saved_supercache_dir = array();
if ( isset( $saved_supercache_dir[ $post_id ] ) ) {
return $saved_supercache_dir[ $post_id ];
}
$DONOTREMEMBER = 0;
if ( $post_id != 0 ) {
$site_url = site_url();
$permalink = get_permalink( $post_id );
if ( false === strpos( $permalink, $site_url ) ) {
/*
* Sometimes site_url doesn't return the siteurl. See https://wordpress.org/support/topic/wp-super-cache-not-refreshing-post-after-comments-made
*/
$DONOTREMEMBER = 1;
wp_cache_debug( "get_current_url_supercache_dir: WARNING! site_url ($site_url) not found in permalink ($permalink).", 1 );
if ( preg_match( '`^(https?:)?//([^/]+)(/.*)?$`i', $permalink, $matches ) ) {
if ( $WPSC_HTTP_HOST != $matches[2] ) {
wp_cache_debug( "get_current_url_supercache_dir: WARNING! SERVER_NAME ({$WPSC_HTTP_HOST}) not found in permalink ($permalink).", 1 );
}
wp_cache_debug( "get_current_url_supercache_dir: Removing SERVER_NAME ({$matches[2]}) from permalink ($permalink). Is the url right?", 1 );
$uri = isset( $matches[3] ) ? $matches[3] : '';
} elseif ( preg_match( '`^/([^/]+)(/.*)?$`i', $permalink, $matches ) ) {
wp_cache_debug( "get_current_url_supercache_dir: WARNING! Permalink ($permalink) looks as absolute path. Is the url right?", 1 );
$uri = $permalink;
} else {
wp_cache_debug( "get_current_url_supercache_dir: WARNING! Permalink ($permalink) could not be understood by parsing url. Using front page.", 1 );
$uri = '';
}
} else {
$uri = str_replace( $site_url, '', $permalink );
if ( strpos( $uri, $wp_cache_home_path ) !== 0 )
$uri = rtrim( $wp_cache_home_path, '/' ) . $uri;
}
} else {
$uri = strtolower( $wp_cache_request_uri );
}
$uri = wpsc_deep_replace( array( '..', '\\', 'index.php', ), preg_replace( '/[ <>\'\"\r\n\t\(\)]/', '', preg_replace( "/(\?.*)?(#.*)?$/", '', $uri ) ) );
$hostname = $WPSC_HTTP_HOST;
// Get hostname from wp options for wp-cron, wp-cli and similar requests.
if ( empty( $hostname ) && function_exists( 'get_option' ) ) {
$hostname = (string) parse_url( get_option( 'home' ), PHP_URL_HOST );
}
$dir = preg_replace( '/:.*$/', '', $hostname ) . $uri; // To avoid XSS attacks
if ( function_exists( "apply_filters" ) ) {
$dir = apply_filters( 'supercache_dir', $dir );
} else {
$dir = do_cacheaction( 'supercache_dir', $dir );
}
$dir = $cache_path . 'supercache/' . $dir . '/';
if( is_array( $cached_direct_pages ) && in_array( $_SERVER[ 'REQUEST_URI' ], $cached_direct_pages ) ) {
$dir = ABSPATH . $uri . '/';
}
$dir = str_replace( '..', '', str_replace( '//', '/', $dir ) );
wp_cache_debug( "supercache dir: $dir", 5 );
if ( $DONOTREMEMBER == 0 )
$saved_supercache_dir[ $post_id ] = $dir;
return $dir;
}
/*
* Delete (or rebuild) all the files in one directory.
* Checks if it is in the cache directory but doesn't allow files in the following directories to be deleted:
* wp-content/cache/
* wp-content/cache/blogs/
* wp-content/cache/supercache/
*
*/
function wpsc_rebuild_files( $dir ) {
return wpsc_delete_files( $dir, false );
}
// realpath() doesn't always remove the trailing slash
function wpsc_get_realpath( $directory ) {
if ( $directory == '/' ) {
return false;
}
$original_dir = $directory;
$directory = realpath( $directory );
if ( ! $directory ) {
wp_cache_debug( "wpsc_get_realpath: directory does not exist - $original_dir" );
return false;
}
if ( substr( $directory, -1 ) == '/' || substr( $directory, -1 ) == '\\' ) {
$directory = substr( $directory, 0, -1 ); // remove trailing slash
}
return $directory;
}
// return true if directory is in the cache directory
function wpsc_is_in_cache_directory( $directory ) {
global $cache_path;
static $rp_cache_path = '';
if ( $directory == '' ) {
wp_cache_debug( 'wpsc_is_in_cache_directory: exiting as directory is blank' );
return false;
}
if ( $cache_path == '' ) {
wp_cache_debug( 'wpsc_is_in_cache_directory: exiting as cache_path is blank' );
return false;
}
if ( $rp_cache_path == '' ) {
$rp_cache_path = wpsc_get_realpath( $cache_path );
}
if ( ! $rp_cache_path ) {
wp_cache_debug( 'wpsc_is_in_cache_directory: exiting as cache_path directory does not exist' );
return false;
}
$directory = wpsc_get_realpath( $directory );
if ( ! $directory ) {
wp_cache_debug( 'wpsc_is_in_cache_directory: directory does not exist' );
return false;
}
if ( substr( $directory, 0, strlen( $rp_cache_path ) ) == $rp_cache_path ) {
return true;
} else {
return false;
}
}
function wpsc_delete_files( $dir, $delete = true ) {
global $cache_path;
static $protected = '';
if ( $dir == '' ) {
wp_cache_debug( 'wpsc_delete_files: directory is blank' );
return false;
}
// only do this once, this function will be called many times
if ( $protected == '' ) {
$protected = array( $cache_path, $cache_path . "blogs/", $cache_path . 'supercache' );
foreach( $protected as $id => $directory ) {
$protected[ $id ] = trailingslashit( wpsc_get_realpath( $directory ) );
}
}
$dir = wpsc_get_realpath( $dir );
if ( ! $dir ) {
wp_cache_debug( 'wpsc_delete_files: directory does not exist: ' . $dir );
return false;
}
$dir = trailingslashit( $dir );
if ( ! wpsc_is_in_cache_directory( $dir ) ) {
return false;
}
if ( in_array( $dir, $protected ) )
return false;
if ( is_dir( $dir ) && $dh = @opendir( $dir ) ) {
while ( ( $file = readdir( $dh ) ) !== false ) {
if ( $file != '.' && $file != '..' && $file != '.htaccess' && is_file( $dir . $file ) )
if ( $delete )
@unlink( $dir . $file );
else
@wp_cache_rebuild_or_delete( $dir . $file );
}
closedir( $dh );
if ( $delete )
@rmdir( $dir );
}
return true;
}
function get_all_supercache_filenames( $dir = '' ) {
global $wp_cache_mobile_enabled, $cache_path;
$dir = wpsc_get_realpath( $dir );
if ( ! $dir ) {
wp_cache_debug( 'get_all_supercache_filenames: directory does not exist' );
return array();
}
if ( ! wpsc_is_in_cache_directory( $dir ) ) {
return array();
}
$filenames = array( 'index.html', 'index-https.html', 'index.html.php' );
if ( $dir != '' && isset( $wp_cache_mobile_enabled ) && $wp_cache_mobile_enabled ) {
// open directory and look for index-*.html files
if ( is_dir( $dir ) && $dh = @opendir( $dir ) ) {
while ( ( $file = readdir( $dh ) ) !== false ) {
if ( substr( $file, 0, 6 ) == 'index-' && strpos( $file, '.html' ) )
$filenames[] = $file;
}
closedir( $dh );
}
}
if ( function_exists( "apply_filters" ) ) {
$filenames = apply_filters( 'all_supercache_filenames', $filenames );
} else {
$filenames = do_cacheaction( 'all_supercache_filenames', $filenames );
}
foreach( $filenames as $file ) {
$out[] = $file;
$out[] = $file . '.gz';
}
return $out;
}
function supercache_filename() {
global $cached_direct_pages;
//Add support for https and http caching
$is_https = ( ( isset( $_SERVER[ 'HTTPS' ] ) && 'on' == strtolower( $_SERVER[ 'HTTPS' ] ) ) || ( isset( $_SERVER[ 'HTTP_X_FORWARDED_PROTO' ] ) && 'https' == strtolower( $_SERVER[ 'HTTP_X_FORWARDED_PROTO' ] ) ) ); //Also supports https requests coming from an nginx reverse proxy
$extra_str = $is_https ? '-https' : '';
if ( function_exists( "apply_filters" ) ) {
$extra_str = apply_filters( 'supercache_filename_str', $extra_str );
} else {
$extra_str = do_cacheaction( 'supercache_filename_str', $extra_str );
}
if ( is_array( $cached_direct_pages ) && in_array( $_SERVER[ 'REQUEST_URI' ], $cached_direct_pages ) ) {
$extra_str = '';
}
$filename = 'index' . $extra_str . '.html';
return $filename;
}
function get_oc_version() {
$wp_cache_oc_key = wp_cache_get( "wp_cache_oc_key" );
if ( ! $wp_cache_oc_key ) {
$wp_cache_oc_key[ 'key' ] = reset_oc_version();
} elseif ( $wp_cache_oc_key[ 'ts' ] < time() - 600 )
wp_cache_set( "wp_cache_oc_key", array( 'ts' => time(), 'key' => $wp_cache_oc_key[ 'key' ] ) );
return $wp_cache_oc_key[ 'key' ];
}
function reset_oc_version( $version = 1 ) {
if ( $version == 1 )
$version = mt_rand();
wp_cache_set( "wp_cache_oc_key", array( 'ts' => time(), 'key' => $version ) );
return $version;
}
function get_oc_key( $url = false ) {
global $wp_cache_gzip_encoding, $WPSC_HTTP_HOST;
if ( $url ) {
$key = intval( $_SERVER[ 'SERVER_PORT' ] ) . strtolower( preg_replace( '/:.*$/', '', $WPSC_HTTP_HOST ) ) . $url;
} else {
$key = get_current_url_supercache_dir();
}
return $key . $wp_cache_gzip_encoding . get_oc_version();
}
function wp_supercache_cache_for_admins() {
if ( isset( $_GET[ 'preview' ] ) || function_exists( "is_admin" ) && is_admin() || defined( 'DOING_AJAX' ) )
return true;
if ( false == do_cacheaction( 'wp_supercache_remove_cookies', true ) )
return true;
if ( $_SERVER[ "REQUEST_METHOD" ] != 'GET' || strpos( $_SERVER[ 'REQUEST_URI' ], '/wp-json/' ) !== false )
return true;
$cookie_keys = array( 'wordpress_logged_in', 'comment_author_' );
if ( defined( 'LOGGED_IN_COOKIE' ) )
$cookie_keys[] = constant( 'LOGGED_IN_COOKIE' );
reset( $_COOKIE );
foreach( $_COOKIE as $cookie => $val ) {
reset( $cookie_keys );
foreach( $cookie_keys as $key ) {
if ( strpos( $cookie, $key ) !== FALSE ) {
wp_cache_debug( 'Removing auth from $_COOKIE to allow caching for logged in user (' . $cookie . ')', 5 );
unset( $_COOKIE[ $cookie ] );
}
}
}
}
/* returns true/false depending on location of $dir. */
function wp_cache_confirm_delete( $dir ) {
global $cache_path, $blog_cache_dir;
// don't allow cache_path, blog cache dir, blog meta dir, supercache.
$dir = wpsc_get_realpath( $dir );
if ( ! $dir ) {
wp_cache_debug( 'wp_cache_confirm_delete: directory does not exist' );
return false;
}
if ( ! wpsc_is_in_cache_directory( $dir ) ) {
return false;
}
$rp_cache_path = wpsc_get_realpath( $cache_path );
if ( ! $rp_cache_path ) {
wp_cache_debug( "wp_cache_confirm_delete: cache_path does not exist: $cache_path" );
return false;
}
if (
$dir == '' ||
$dir == $rp_cache_path ||
$dir == wpsc_get_realpath( $blog_cache_dir ) ||
$dir == wpsc_get_realpath( $blog_cache_dir . "meta/" ) ||
$dir == wpsc_get_realpath( $cache_path . "supercache" )
) {
return false;
} else {
return true;
}
}
// copy of _deep_replace() to be used before WordPress loads
function wpsc_deep_replace( $search, $subject ) {
$subject = (string) $subject;
$count = 1;
while ( $count ) {
$subject = str_replace( $search, '', $subject, $count );
}
return $subject;
}
function wpsc_get_protected_directories() {
global $cache_path, $blog_cache_dir;
return apply_filters( 'wpsc_protected_directories', array(
$cache_path . '.htaccess',
$cache_path . "index.html",
$blog_cache_dir,
$blog_cache_dir . "index.html",
$blog_cache_dir . 'meta',
$blog_cache_dir . 'meta/index.html',
$cache_path . 'supercache/index.html',
$cache_path . 'supercache' )
);
}
function wpsc_create_debug_log( $filename = '', $username = '' ) {
global $cache_path, $wp_cache_debug_username, $wp_cache_debug_log;
if ( $filename != '' ) {
$wp_cache_debug_log = $filename;
} else {
$wp_cache_debug_log = md5( time() + mt_rand() ) . ".php";
}
if ( $username != '' ) {
$wp_cache_debug_username = $username;
} else {
$wp_cache_debug_username = md5( time() + mt_rand() );
}
$msg = '
if ( !isset( $_SERVER[ "PHP_AUTH_USER" ] ) || ( $_SERVER[ "PHP_AUTH_USER" ] != "' . $wp_cache_debug_username . '" && $_SERVER[ "PHP_AUTH_PW" ] != "' . $wp_cache_debug_username . '" ) ) {
header( "WWW-Authenticate: Basic realm=\"WP-Super-Cache Debug Log\"" );
header( $_SERVER[ "SERVER_PROTOCOL" ] . " 401 Unauthorized" );
echo "You must login to view the debug log";
exit;
}' . PHP_EOL;
$fp = fopen( $cache_path . $wp_cache_debug_log, 'w' );
if ( $fp ) {
fwrite( $fp, '<' . "?php\n" );
fwrite( $fp, $msg );
fwrite( $fp, '?' . "><pre>" . PHP_EOL );
fwrite( $fp, '<' . '?php // END HEADER ?' . '>' . PHP_EOL );
fclose( $fp );
wp_cache_setting( 'wp_cache_debug_log', $wp_cache_debug_log );
wp_cache_setting( 'wp_cache_debug_username', $wp_cache_debug_username );
}
$fp = fopen( $cache_path . 'view_' . $wp_cache_debug_log, 'w' );
if ( $fp ) {
fwrite( $fp, '<' . "?php" . PHP_EOL );
$msg .= '$debug_log = file( "./' . $wp_cache_debug_log . '" );
$start_log = 1 + array_search( "<" . "?php // END HEADER ?" . ">" . PHP_EOL, $debug_log );
if ( $start_log > 1 ) {
$debug_log = array_slice( $debug_log, $start_log );
}
?' . '><form action="" method="GET"><' . '?php
$checks = array( "wp-admin", "exclude_filter", "wp-content", "wp-json" );
foreach( $checks as $check ) {
if ( isset( $_GET[ $check ] ) ) {
$$check = 1;
} else {
$$check = 0;
}
}
if ( isset( $_GET[ "filter" ] ) ) {
$filter = htmlspecialchars( $_GET[ "filter" ] );
} else {
$filter = "";
}
unset( $checks[1] ); // exclude_filter
?' . '>
Exclude requests: <br />
<' . '?php foreach ( $checks as $check ) { ?>
<label><input type="checkbox" name="<' . '?php echo $check; ?' . '>" value="1" <' . '?php if ( $$check ) { echo "checked"; } ?' . '> /> <' . '?php echo $check; ?' . '></label><br />
<' . '?php } ?' . '>
<br />
Text to filter by:
<input type="text" name="filter" value="<' . '?php echo $filter; ?' . '>" /><br />
<input type="checkbox" name="exclude_filter" value="1" <' . '?php if ( $exclude_filter ) { echo "checked"; } ?' . '> /> Exclude by filter instead of include.<br />
<input type="submit" value="Submit" />
</form>
<' . '?php
foreach ( $debug_log as $t => $line ) {
foreach( $checks as $check ) {
if ( $$check && false !== strpos( $line, " /$check/" ) ) {
unset( $debug_log[ $t ] );
}
}
if ( $filter ) {
if ( false !== strpos( $line, $filter ) && $exclude_filter ) {
unset( $debug_log[ $t ] );
} elseif ( false === strpos( $line, $filter ) && ! $exclude_filter ) {
unset( $debug_log[ $t ] );
}
}
}
foreach( $debug_log as $line ) {
echo $line . "<br />";
}';
fwrite( $fp, $msg );
fclose( $fp );
}
return array( 'wp_cache_debug_log' => $wp_cache_debug_log, 'wp_cache_debug_username' => $wp_cache_debug_username );
}
function wpsc_delete_url_cache( $url ) {
if ( false !== strpos( $url, '?' ) ) {
wp_cache_debug( 'wpsc_delete_url_cache: URL contains the character "?". Not deleting URL: ' . $url );
return false;
}
$dir = str_replace( get_option( 'home' ), '', $url );
if ( $dir != '' ) {
$supercachedir = get_supercache_dir();
wpsc_delete_files( $supercachedir . $dir );
prune_super_cache( $supercachedir . $dir . '/page', true );
return true;
} else {
return false;
}
}
// from legolas558 d0t users dot sf dot net at http://www.php.net/is_writable
function is_writeable_ACLSafe( $path ) {