<?php
function wp_cache_add($key, $data, $flag = '', $expire = 0) {
global $wp_object_cache;
+ $data = unserialize(serialize($data));
return $wp_object_cache->add($key, $data, $flag, $expire);
}
function wp_cache_close() {
global $wp_object_cache;
+ if ( ! isset($wp_object_cache) )
+ return;
return $wp_object_cache->save();
}
}
function wp_cache_init() {
- global $wp_object_cache;
-
- $wp_object_cache = new WP_Object_Cache();
+ $GLOBALS['wp_object_cache'] =& new WP_Object_Cache();
}
function wp_cache_replace($key, $data, $flag = '', $expire = 0) {
global $wp_object_cache;
+ $data = unserialize(serialize($data));
return $wp_object_cache->replace($key, $data, $flag, $expire);
}
function wp_cache_set($key, $data, $flag = '', $expire = 0) {
global $wp_object_cache;
+ $data = unserialize(serialize($data));
return $wp_object_cache->set($key, $data, $flag, $expire);
}
-define('CACHE_SERIAL_HEADER', "<?php\n//");
-define('CACHE_SERIAL_FOOTER', "\n?".">");
+define('CACHE_SERIAL_HEADER', "<?php\n/*");
+define('CACHE_SERIAL_FOOTER', "*/\n?".">");
class WP_Object_Cache {
var $cache_dir;
var $dirty_objects = array ();
var $non_existant_objects = array ();
var $global_groups = array ('users', 'userlogins', 'usermeta');
+ var $non_persistent_groups = array('comment');
var $blog_id;
var $cold_cache_hits = 0;
var $warm_cache_hits = 0;
var $cache_misses = 0;
+ var $secret = '';
function acquire_lock() {
- // Acquire a write lock.
+ // Acquire a write lock.
$this->mutex = @fopen($this->cache_dir.$this->flock_filename, 'w');
if ( false == $this->mutex)
return false;
if ( ! $this->acquire_lock() )
return false;
-
+
$this->rm_cache_dir();
$this->cache = array ();
$this->dirty_objects = array ();
$this->non_existant_objects = array ();
-
+
$this->release_lock();
return true;
return false;
}
- $cache_file = $this->cache_dir.$this->get_group_dir($group)."/".md5($id.DB_PASSWORD).'.php';
+ $cache_file = $this->cache_dir.$this->get_group_dir($group)."/".$this->hash($id).'.php';
if (!file_exists($cache_file)) {
$this->non_existant_objects[$group][$id] = true;
$this->cache_misses += 1;
return false;
}
- $this->cache[$group][$id] = unserialize(substr(@ file_get_contents($cache_file), strlen(CACHE_SERIAL_HEADER), -strlen(CACHE_SERIAL_FOOTER)));
+ $this->cache[$group][$id] = unserialize(base64_decode(substr(@ file_get_contents($cache_file), strlen(CACHE_SERIAL_HEADER), -strlen(CACHE_SERIAL_FOOTER))));
if (false === $this->cache[$group][$id])
$this->cache[$group][$id] = '';
return "{$this->blog_id}/$group";
}
- function load_group_from_db($group) {
- global $wpdb;
-
- if ('category' == $group) {
- $this->cache['category'] = array ();
- if ($dogs = $wpdb->get_results("SELECT * FROM $wpdb->categories")) {
- foreach ($dogs as $catt)
- $this->cache['category'][$catt->cat_ID] = $catt;
-
- foreach ($this->cache['category'] as $catt) {
- $curcat = $catt->cat_ID;
- $fullpath = '/'.$this->cache['category'][$catt->cat_ID]->category_nicename;
- while ($this->cache['category'][$curcat]->category_parent != 0) {
- $curcat = $this->cache['category'][$curcat]->category_parent;
- $fullpath = '/'.$this->cache['category'][$curcat]->category_nicename.$fullpath;
- }
- $this->cache['category'][$catt->cat_ID]->fullpath = $fullpath;
- }
- }
- } else
- if ('options' == $group) {
- $wpdb->hide_errors();
- if (!$options = $wpdb->get_results("SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'")) {
- $options = $wpdb->get_results("SELECT option_name, option_value FROM $wpdb->options");
- }
- $wpdb->show_errors();
-
- if ( ! $options )
- return;
+ function hash($data) {
+ if ( function_exists('hash_hmac') ) {
+ return hash_hmac('md5', $data, $this->secret);
+ } else {
+ return md5($data . $this->secret);
+ }
+ }
- foreach ($options as $option) {
- $this->cache['options'][$option->option_name] = $option->option_value;
- }
- }
+ function load_group_from_db($group) {
+ return;
}
function make_group_dir($group, $perms) {
while ($index < count($stack)) {
# Get indexed directory from stack
$dir = $stack[$index];
-
+
$dh = @ opendir($dir);
if (!$dh)
return false;
-
+
while (($file = @ readdir($dh)) !== false) {
if ($file == '.' or $file == '..')
continue;
-
+
if (@ is_dir($dir . DIRECTORY_SEPARATOR . $file))
$stack[] = $dir . DIRECTORY_SEPARATOR . $file;
else if (@ is_file($dir . DIRECTORY_SEPARATOR . $file))
// Loop over dirty objects and save them.
$errors = 0;
foreach ($this->dirty_objects as $group => $ids) {
+ if ( in_array($group, $this->non_persistent_groups) )
+ continue;
+
$group_dir = $this->make_group_dir($group, $dir_perms);
$ids = array_unique($ids);
foreach ($ids as $id) {
- $cache_file = $group_dir.md5($id.DB_PASSWORD).'.php';
+ $cache_file = $group_dir.$this->hash($id).'.php';
// Remove the cache file if the key is not set.
if (!isset ($this->cache[$group][$id])) {
}
$temp_file = tempnam($group_dir, 'tmp');
- $serial = CACHE_SERIAL_HEADER.serialize($this->cache[$group][$id]).CACHE_SERIAL_FOOTER;
+ $serial = CACHE_SERIAL_HEADER.base64_encode(serialize($this->cache[$group][$id])).CACHE_SERIAL_FOOTER;
$fd = @fopen($temp_file, 'w');
if ( false === $fd ) {
$errors++;
fputs($fd, $serial);
fclose($fd);
if (!@ rename($temp_file, $cache_file)) {
- if (@ copy($temp_file, $cache_file))
- @ unlink($temp_file);
- else
- $errors++;
+ if (!@ copy($temp_file, $cache_file))
+ $errors++;
+ @ unlink($temp_file);
}
@ chmod($cache_file, $file_perms);
}
$this->dirty_objects = array();
$this->release_lock();
-
+
if ( $errors )
return false;
function stats() {
echo "<p>";
- echo "<strong>Cold Cache Hits:</strong> {$this->cold_cache_hits}<br/>";
- echo "<strong>Warm Cache Hits:</strong> {$this->warm_cache_hits}<br/>";
- echo "<strong>Cache Misses:</strong> {$this->cache_misses}<br/>";
+ echo "<strong>Cold Cache Hits:</strong> {$this->cold_cache_hits}<br />";
+ echo "<strong>Warm Cache Hits:</strong> {$this->warm_cache_hits}<br />";
+ echo "<strong>Cache Misses:</strong> {$this->cache_misses}<br />";
echo "</p>";
foreach ($this->cache as $group => $cache) {
echo "<p>";
- echo "<strong>Group:</strong> $group<br/>";
+ echo "<strong>Group:</strong> $group<br />";
echo "<strong>Cache:</strong>";
echo "<pre>";
print_r($cache);
}
function WP_Object_Cache() {
+ return $this->__construct();
+ }
+
+ function __construct() {
global $blog_id;
+ register_shutdown_function(array(&$this, "__destruct"));
+
if (defined('DISABLE_CACHE'))
return;
+ if ( ! defined('ENABLE_CACHE') )
+ return;
+
// Disable the persistent cache if safe_mode is on.
if ( ini_get('safe_mode') && ! defined('ENABLE_CACHE') )
return;
if (defined('CACHE_EXPIRATION_TIME'))
$this->expiration_time = CACHE_EXPIRATION_TIME;
- $this->blog_id = md5($blog_id);
+ if ( defined('WP_SECRET') )
+ $this->secret = WP_SECRET;
+ else
+ $this->secret = DB_PASSWORD . DB_USER . DB_NAME . DB_HOST . ABSPATH;
+
+ $this->blog_id = $this->hash($blog_id);
+ }
+
+ function __destruct() {
+ $this->save();
+ return true;
}
}
?>
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff