Strings in the HTTP 'User Agent' header that prevent AIO Cache from
caching bot, spiders, and crawlers' requests.
Note that cached files are still sent to these request if they already exists.
Add here strings (not a filename) that forces a page not to be cached. For example, if your URLs include year and you dont want to cache last year posts, it's enough to specify the year, i.e. '/2004/'. AIO Cache will search if that string is part of the URI and if so, it will no cache that page.
Add here those filenames that can be cached, even if they match one of the rejected substring specified above.
\n";
echo '\n";
}
function wp_cache_enable() {
global $wp_cache_config_file, $cache_enabled;
if(get_settings('gzipcompression')) {
echo "Error: GZIP compression is enabled, disable it if you want to enable AIO Cache.
";
return false;
}
if( wp_cache_replace_line('^ *\$cache_enabled', '$cache_enabled = true;', $wp_cache_config_file) ) {
$cache_enabled = true;
}
}
function wp_cache_disable() {
global $wp_cache_config_file, $cache_enabled;
if (wp_cache_replace_line('^ *\$cache_enabled',
'$cache_enabled = false;', $wp_cache_config_file)) {
$cache_enabled = false;
}
}
function wp_cache_is_enabled() {
global $wp_cache_config_file;
if(get_settings('gzipcompression')) {
echo "Warning: GZIP compression is enabled in Wordpress, wp-cache will be bypassed until you disable gzip compression. ";
return false;
}
$lines = file($wp_cache_config_file);
foreach($lines as $line) {
if (preg_match('/^ *\$cache_enabled *= *true *;/', $line))
return true;
}
return false;
}
function wp_cache_replace_line($old, $new, $my_file) {
if (!is_writable($my_file)) {
echo "Error: file $my_file is not writeable. \n";
return false;
}
$found = false;
$lines = file($my_file);
foreach($lines as $line) {
if ( preg_match("/$old/", $line)) {
$found = true;
break;
}
}
if ($found) {
$fd = fopen($my_file, 'w');
foreach($lines as $line) {
if ( !preg_match("/$old/", $line))
fputs($fd, $line);
else {
fputs($fd, "$new //Added by AIO Cache\n");
}
}
fclose($fd);
return true;
}
$fd = fopen($my_file, 'w');
$done = false;
foreach($lines as $line) {
if ( $done || !preg_match('/^define|\$|\?>/', $line))
fputs($fd, $line);
else {
fputs($fd, "$new //Added by AIO Cache\n");
fputs($fd, $line);
$done = true;
}
}
fclose($fd);
return true;
/*
copy($my_file, $my_file . "-prev");
rename($my_file . '-new', $my_file);
*/
}
function wp_cache_verify_cache_dir() {
global $cache_path;
$dir = dirname($cache_path);
if ( !file_exists($cache_path) ) {
if ( !is_writable( $dir ) || !($dir = mkdir( $cache_path, 0777) ) ) {
echo "Error: Your cache directory ($cache_path) did not exist and couldn't be created by the web server. Check $dir permissions.";
return false;
}
}
if ( !is_writable($cache_path)) {
echo "Error: Your cache directory ($cache_path) or $dir need to be writable for this plugin to work. Double-check it.";
return false;
}
if ( '/' != substr($cache_path, -1)) {
$cache_path .= '/';
}
return true;
}
function wp_cache_verify_config_file() {
global $wp_cache_config_file, $wp_cache_config_file_sample;
$new = false;
$dir = dirname($wp_cache_config_file);
if ( !is_writable($dir)) {
echo "Error: wp-content directory ($dir) is not writable by the Web server. Check its permissions.";
return false;
}
if ( !file_exists($wp_cache_config_file) ) {
if ( !file_exists($wp_cache_config_file_sample) ) {
echo "Error: Sample AIO Cache config file ($wp_cache_config_file_sample) does not exist. Verify you installation.";
return false;
}
copy($wp_cache_config_file_sample, $wp_cache_config_file);
$new = true;
}
if ( !is_writable($wp_cache_config_file)) {
echo "Error: Your AIO Cache config file ($wp_cache_config_file) is not writable by the Web server. Check its permissions.";
return false;
}
require($wp_cache_config_file);
return true;
}
function wp_cache_check_link() {
global $wp_cache_link, $wp_cache_file;
if ( basename(@readlink($wp_cache_link)) != basename($wp_cache_file)) {
@unlink($wp_cache_link);
if (!@symlink ($wp_cache_file, $wp_cache_link)) {
echo "advanced-cache.php link does not exist ";
echo "Create it by executing: ln -s $wp_cache_file $wp_cache_link in your server ";
return false;
}
}
return true;
}
function wp_cache_check_global_config() {
$global = ABSPATH . 'wp-config.php';
$lines = file($global);
foreach($lines as $line) {
if (preg_match('/^ *define *\( *\'WP_CACHE\' *, *true *\) *;/', $line)) {
return true;
}
}
$line = 'define(\'WP_CACHE\', true);';
if (!is_writable($global) || !wp_cache_replace_line('define *\( *\'WP_CACHE\'', $line, $global) ) {
echo "Error: WP_CACHE is not enabled in your wp-config.php file and AIO Cache couldn't modify it. ";
echo "Edit $global and add the following line: define('WP_CACHE', true); Otherwise, AIO Cache will not be executed by Wordpress core. ";
return false;
}
return true;
}
function wp_cache_files() {
global $cache_path, $file_prefix, $cache_max_time, $valid_nonce;
if ( '/' != substr($cache_path, -1)) {
$cache_path .= '/';
}
if ( $valid_nonce ) {
if(isset($_REQUEST['wp_delete_cache'])) {
wp_cache_clean_cache($file_prefix);
}
if(isset($_REQUEST['wp_delete_cache_file'])) {
wp_cache_clean_cache($_REQUEST['wp_delete_cache_file']);
}
if(isset($_REQUEST['wp_delete_expired'])) {
wp_cache_clean_expired($file_prefix);
}
}
if(isset($_REQUEST['wp_list_cache'])) {
$list_files = true;
$list_mess = "Update list";
} else
$list_mess = "List files";
echo '\n";
$count = 0;
$expired = 0;
$now = time();
if ( ($handle = opendir( $cache_path )) ) {
if ($list_files) echo "
";
while ( false !== ($file = readdir($handle))) {
if ( preg_match("/^$file_prefix.*\.meta/", $file) ) {
$this_expired = false;
$content_file = preg_replace("/meta$/", "html", $file);
$mtime = filemtime($cache_path.$file);
if ( ! ($fsize = @filesize($cache_path.$content_file)) )
continue; // .meta does not exists
$fsize = intval($fsize/1024);
$age = $now - $mtime;
if ( $age > $cache_max_time) {
$expired++;
$this_expired = true;
}
$count++;
if ($list_files) {
$meta = new CacheMeta;
$meta = unserialize(file_get_contents($cache_path . $file));
echo $flip ? '