function wp_cache_shutdown_callback()
{
global $cache_path, $cache_max_time, $file_expired, $file_prefix, $meta_file, $new_cache;
global $wp_cache_meta_object, $known_headers, $blog_id;
$wp_cache_meta_object->uri = $_SERVER["SERVER_NAME"] . preg_replace('/[ <>\'\\"\\r\\n\\t\\(\\)]/', '', $_SERVER['REQUEST_URI']);
// To avoid XSS attacs
$wp_cache_meta_object->blog_id = $blog_id;
$wp_cache_meta_object->post = wp_cache_post_id();
$response = wp_cache_get_response_headers();
$wp_cache_meta_object->headers = array();
foreach ($known_headers as $key) {
if (isset($response[$key])) {
array_push($wp_cache_meta_object->headers, "{$key}: " . $response[$key]);
}
}
/* Not used because it gives problems with some
* PHP installations
if (!$response{'Content-Length'}) {
// WP does not set content size
$content_size = ob_get_length();
@header("Content-Length: $content_size");
array_push($wp_cache_meta_object->headers, "Content-Length: $content_size");
}
*/
if (!$response['Last-Modified']) {
$value = gmdate('D, d M Y H:i:s') . ' GMT';
/* Dont send this the first time */
/* @header('Last-Modified: ' . $value); */
array_push($wp_cache_meta_object->headers, "Last-Modified: {$value}");
}
if (!$response['Content-Type'] && !$response['Content-type']) {
$value = "text/html; charset=" . get_settings('blog_charset');
@header("Content-Type: {$value}");
array_push($wp_cache_meta_object->headers, "Content-Type: {$value}");
}
ob_end_flush();
if ($new_cache) {
$serial = serialize($wp_cache_meta_object);
wp_cache_writers_entry();
$fr = fopen($cache_path . $meta_file, 'w');
fputs($fr, $serial);
fclose($fr);
wp_cache_writers_exit();
}
if ($file_expired == false) {
return;
}
// we delete expired files
flush();
//Ensure we send data to the client
wp_cache_phase2_clean_expired($file_prefix);
}
function wp_cache_shutdown_callback()
{
global $cache_path, $cache_max_time, $file_expired, $file_prefix, $meta_file, $new_cache, $wp_cache_meta, $known_headers, $blog_id, $wp_cache_gzip_encoding, $gzsize, $cache_filename, $supercacheonly, $blog_cache_dir;
global $wp_cache_blog_charset, $wp_cache_request_uri, $wp_cache_key;
$wp_cache_meta['uri'] = $_SERVER["SERVER_NAME"] . preg_replace('/[ <>\'\\"\\r\\n\\t\\(\\)]/', '', $wp_cache_request_uri);
// To avoid XSS attacks
$wp_cache_meta['blog_id'] = $blog_id;
$wp_cache_meta['post'] = wp_cache_post_id();
$wp_cache_meta['key'] = $wp_cache_key;
$wp_cache_meta = apply_filters('wp_cache_meta', $wp_cache_meta);
$response = wp_cache_get_response_headers();
foreach ($known_headers as $key) {
if (isset($response[$key])) {
$wp_cache_meta['headers'][$key] = "{$key}: " . $response[$key];
}
}
if (!isset($response['Last-Modified'])) {
$value = gmdate('D, d M Y H:i:s') . ' GMT';
/* Dont send this the first time */
/* @header('Last-Modified: ' . $value); */
$wp_cache_meta['headers']['Last-Modified'] = "Last-Modified: {$value}";
}
if (!$response['Content-Type'] && !$response['Content-type']) {
// On some systems, headers set by PHP can't be fetched from
// the output buffer. This is a last ditch effort to set the
// correct Content-Type header for feeds, if we didn't see
// it in the response headers already. -- dougal
if (is_feed()) {
$type = get_query_var('feed');
$type = str_replace('/', '', $type);
switch ($type) {
case 'atom':
$value = "application/atom+xml";
break;
case 'rdf':
$value = "application/rdf+xml";
break;
case 'rss':
case 'rss2':
default:
$value = "application/rss+xml";
}
} else {
// not a feed
$value = get_option('html_type');
if ($value == '') {
$value = 'text/html';
}
}
$value .= "; charset=\"" . $wp_cache_blog_charset . "\"";
if (isset($GLOBALS['wp_super_cache_debug']) && $GLOBALS['wp_super_cache_debug']) {
wp_cache_debug("Sending 'Content-Type: {$value}' header.", 2);
}
@header("Content-Type: {$value}");
$wp_cache_meta['headers']['Content-Type'] = "Content-Type: {$value}";
}
if (!$supercacheonly && $new_cache) {
if ($wp_cache_gzip_encoding && !in_array('Content-Encoding: ' . $wp_cache_gzip_encoding, $wp_cache_meta['headers'])) {
if (isset($GLOBALS['wp_super_cache_debug']) && $GLOBALS['wp_super_cache_debug']) {
wp_cache_debug("Sending gzip headers.", 2);
}
$wp_cache_meta['headers']['Content-Encoding'] = 'Content-Encoding: ' . $wp_cache_gzip_encoding;
$wp_cache_meta['headers']['Vary'] = 'Vary: Accept-Encoding, Cookie';
}
$serial = serialize($wp_cache_meta);
if (wp_cache_writers_entry()) {
if (isset($GLOBALS['wp_super_cache_debug']) && $GLOBALS['wp_super_cache_debug']) {
wp_cache_debug("Writing meta file: {$blog_cache_dir}meta/{$meta_file}", 2);
}
$tmp_meta_filename = $blog_cache_dir . 'meta/' . uniqid(mt_rand(), true) . '.tmp';
$fr = @fopen($tmp_meta_filename, 'w');
if (!$fr) {
@mkdir($blog_cache_dir . 'meta');
}
$fr = fopen($tmp_meta_filename, 'w');
fputs($fr, $serial);
fclose($fr);
@chmod($tmp_meta_filename, 0666 & ~umask());
if (!@rename($tmp_meta_filename, $blog_cache_dir . 'meta/' . $meta_file)) {
unlink($blog_cache_dir . 'meta/' . $meta_file);
rename($tmp_meta_filename, $blog_cache_dir . 'meta/' . $meta_file);
}
wp_cache_writers_exit();
}
}
global $time_to_gc_cache;
if (isset($time_to_gc_cache) && $time_to_gc_cache == 1) {
if (isset($GLOBALS['wp_super_cache_debug']) && $GLOBALS['wp_super_cache_debug']) {
wp_cache_debug("Executing wp_cache_gc action.", 3);
}
do_action('wp_cache_gc');
}
}
function wp_cache_shutdown_callback()
{
global $cache_path, $cache_max_time, $file_expired, $file_prefix, $meta_file, $new_cache, $wp_cache_meta_object, $known_headers, $blog_id, $wp_cache_gc, $wp_cache_gzip_encoding, $gzsize, $cache_filename;
$wp_cache_meta_object->uri = $_SERVER["SERVER_NAME"] . preg_replace('/[ <>\'\\"\\r\\n\\t\\(\\)]/', '', $_SERVER['REQUEST_URI']);
// To avoid XSS attacs
$wp_cache_meta_object->blog_id = $blog_id;
$wp_cache_meta_object->post = wp_cache_post_id();
$response = wp_cache_get_response_headers();
foreach ($known_headers as $key) {
if (isset($response[$key])) {
array_push($wp_cache_meta_object->headers, "{$key}: " . $response[$key]);
}
}
/* Not used because it gives problems with some
* PHP installations
if (!$response{'Content-Length'}) {
// WP does not set content size
$content_size = ob_get_length();
@header("Content-Length: $content_size");
array_push($wp_cache_meta_object->headers, "Content-Length: $content_size");
}
*/
if (!isset($response['Last-Modified'])) {
$value = gmdate('D, d M Y H:i:s') . ' GMT';
/* Dont send this the first time */
/* @header('Last-Modified: ' . $value); */
array_push($wp_cache_meta_object->headers, "Last-Modified: {$value}");
}
if (!$response['Content-Type'] && !$response['Content-type']) {
// On some systems, headers set by PHP can't be fetched from
// the output buffer. This is a last ditch effort to set the
// correct Content-Type header for feeds, if we didn't see
// it in the response headers already. -- dougal
if (is_feed()) {
$type = get_query_var('feed');
$type = str_replace('/', '', $type);
switch ($type) {
case 'atom':
$value = "application/atom+xml";
break;
case 'rdf':
$value = "application/rdf+xml";
break;
case 'rss':
case 'rss2':
default:
$value = "application/rss+xml";
}
} else {
// not a feed
$value = 'text/html';
}
$value .= "; charset=\"" . get_option('blog_charset') . "\"";
@header("Content-Type: {$value}");
array_push($wp_cache_meta_object->headers, "Content-Type: {$value}");
}
@ob_end_flush();
flush();
//Ensure we send data to the client
if ($new_cache) {
if ($wp_cache_gzip_encoding && !in_array('Content-Encoding: ' . $wp_cache_gzip_encoding, $wp_cache_meta_object->headers)) {
array_push($wp_cache_meta_object->headers, 'Content-Encoding: ' . $wp_cache_gzip_encoding);
array_push($wp_cache_meta_object->headers, 'Vary: Accept-Encoding, Cookie');
array_push($wp_cache_meta_object->headers, 'Content-Length: ' . $gzsize);
}
$serial = serialize($wp_cache_meta_object);
if (!wp_cache_writers_entry()) {
return false;
}
$tmp_meta_filename = tempnam($cache_path . 'meta/', "wp-cache");
$fr = @fopen($tmp_meta_filename, 'w');
if (!$fr) {
@mkdir($cache_path . 'meta');
}
$fr = fopen($tmp_meta_filename, 'w');
fputs($fr, $serial);
fclose($fr);
@chmod($tmp_meta_filename, 0666 & ~umask());
if (!@rename($tmp_meta_filename, $cache_path . 'meta/' . $meta_file)) {
unlink($cache_path . 'meta/' . $meta_file);
rename($tmp_metae_filename, $cache_path . 'meta/' . $meta_file);
}
wp_cache_writers_exit();
}
if (!isset($wp_cache_gc)) {
$wp_cache_gc = 3600;
}
$last_gc = get_option("wpsupercache_gc_time");
if (!$last_gc) {
update_option('wpsupercache_gc_time', time());
return;
}
if ($last_gc > time() - $wp_cache_gc) {
// do garbage collection once every X hours.
return;
}
update_option('wpsupercache_gc_time', time());
// we delete expired files, using a wordpress cron event
// since flush() does not guarantee hand-off to client - problem on Win32 and suPHP
if (!wp_next_scheduled('wp_cache_gc')) {
wp_schedule_single_event(time() + 10, 'wp_cache_gc');
}
}
