Bill Zeller.
Author: Matt Mullenweg
Author URI: http://photomatt.net/
*/
$http = false; // This controls whether we send etag and last-modified headers or not
define(CACHE_PATH, trailingslashit( ABSPATH . 'wp-content/staticize-cache' ) );
if ( !file_exists(CACHE_PATH) ) :
if ( is_writable( dirname(CACHE_PATH) ) )
$dir = mkdir( CACHE_PATH, 0777);
else
die("Your cache directory (" . CACHE_PATH . ") needs to be writable for this plugin to work. Double-check it. Deactivate the Staticize Reloaded plugin.");
endif;
// Array of files that have 'wp-' but should still be cached
$acceptableFiles = array(
'wp-atom.php', 'wp-comments-popup.php', 'wp-commentsrss2.php',
'wp-links-opml.php', 'wp-locations.php', 'wp-rdf.php',
'wp-rss.php', 'wp-rss2.php'
);
$staticFileName = '';
function StaticizeInit() {
global $staticFileName, $acceptableFiles, $timestart, $http;
$key = $_SERVER['REQUEST_URI'] . join($_COOKIE, ',');
$script = basename($_SERVER['SCRIPT_NAME']);
if( strstr($_SERVER['SCRIPT_NAME'], 'wp-') && !in_array($script, $acceptableFiles) )
return;
$staticFileName = md5($key) . '.php';
if( is_file(CACHE_PATH . $staticFileName) ) {
if ($http) staticize_header();
include(CACHE_PATH . $staticFileName);
$timetotal = staticize_timer();
echo "\n";
exit;
}
ob_start('StaticizeCallback');
register_shutdown_function('StaticizeEnd');
}
function StaticizeCallback($buffer) {
global $staticFileName, $timestart;
$timetotal = staticize_timer();
if ($timetotal < 0.05) : // Too fast to cache
$buffer .= "\n";
return $buffer;
endif;
$fr = fopen(CACHE_PATH . $staticFileName, 'a');
chmod(CACHE_PATH . $staticFileName, 0666);
if (!$fr)
$buffer = "Couldn't write to: " . CACHE_PATH . $staticFileName;
$buffer .= "\n";
$return = $buffer;
$buffer = preg_replace('|(.*?)|is', '', $buffer);
$buffer = preg_replace('|(.*?)|is', '', $buffer);
$buffer = str_replace('', $buffer);
fwrite($fr, $buffer);
fclose($fr);
return $return;
}
function StaticizeClean() { // TODO: only touch files that have been changed using post ID
if ( $handle = opendir( CACHE_PATH ) ) :
while ( false !== ( $file = readdir($handle) ) ) :
if ( '.' != $file && '..' != $file )
unlink(CACHE_PATH . $file);
endwhile;
endif;
closedir($handle);
}
function StaticizeEnd() {
ob_end_clean();
}
function postChange($id) {
StaticizeClean();
return $id;
}
function staticize_timer() {
global $timestart;
$mtime = microtime();
$mtime = explode(' ', $mtime);
$timeend = $mtime[1] + $mtime[0];
return number_format($timeend - $timestart, 3);
}
function staticize_header() {
$file_touched = filemtime(CACHE_PATH . $staticFileName);
$wp_last_modified = gmdate('D, d M Y H:i:s', $file_touched) . ' GMT';
$wp_etag = '"'.md5($wp_last_modified).'"';
header('Last-Modified: '.$wp_last_modified);
header('ETag: '.$wp_etag);
header ('X-Pingback: ' . get_settings('siteurl') . '/xmlrpc.php');
header ('X-Staticize: ' . staticize_timer() );
// Support for Conditional GET
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) $client_last_modified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
else $client_last_modified = false;
if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
else $client_etag = false;
if ( ($client_last_modified && $client_etag) ?
(($client_last_modified == $wp_last_modified) && ($client_etag == $wp_etag)) :
(($client_last_modified == $wp_last_modified) || ($client_etag == $wp_etag)) ) {
if ( preg_match('/cgi/',php_sapi_name()) ) {
header('HTTP/1.1 304 Not Modified');
echo "\r\n\r\n";
exit;
} else {
header('HTTP/1.x 304 Not Modified');
exit;
}
}
}
if(function_exists('add_action')) {
StaticizeInit();
add_action('publish_post', 'postChange', 0);
add_action('edit_post', 'postChange', 0);
add_action('delete_post', 'postChange', 0);
add_action('comment_post', 'postChange', 0);
add_action('trackback_post', 'postChange', 0);
add_action('pingback_post', 'postChange', 0);
add_action('edit_comment', 'postChange', 0);
add_action('delete_comment', 'postChange', 0);
add_action('template_save', 'postChange', 0);
}
if ( isset($_GET['staticize-flush']) ) {
StaticizeClean();
}
?>