/**
* Runs plugin
*/
function run()
{
add_action('w3tc_flush_all', array($this, 'w3tc_flush_posts'), 1100, 1);
add_action('w3tc_flush_post', array($this, 'w3tc_flush_post'), 1100, 1);
add_action('w3tc_flushable_posts', '__return_true', 1100);
add_action('w3tc_flush_posts', array($this, 'w3tc_flush_posts'), 1100);
add_action('w3tc_flush_url', array($this, 'w3tc_flush_url'), 1100, 1);
add_filter('w3tc_admin_bar_menu', array($this, 'w3tc_admin_bar_menu'));
add_filter('cron_schedules', array($this, 'cron_schedules'));
$o = Dispatcher::component('PgCache_ContentGrabber');
add_filter('w3tc_footer_comment', array($o, 'w3tc_footer_comment'));
add_action('w3tc_usage_statistics_of_request', array($o, 'w3tc_usage_statistics_of_request'), 10, 1);
add_filter('w3tc_usage_statistics_metrics', array($this, 'w3tc_usage_statistics_metrics'));
if ($this->_config->get_string('pgcache.engine') == 'file' || $this->_config->get_string('pgcache.engine') == 'file_generic') {
add_action('w3_pgcache_cleanup', array($this, 'cleanup'));
}
add_action('w3_pgcache_prime', array($this, 'prime'));
Util_AttachToActions::flush_posts_on_actions();
add_filter('comment_cookie_lifetime', array($this, 'comment_cookie_lifetime'));
if ($this->_config->get_string('pgcache.engine') == 'file_generic') {
add_action('wp_logout', array($this, 'on_logout'), 0);
add_action('wp_login', array($this, 'on_login'), 0);
}
if ($this->_config->get_boolean('pgcache.prime.post.enabled', false)) {
add_action('publish_post', array($this, 'prime_post'), 30);
}
if (($this->_config->get_boolean('pgcache.late_init') || $this->_config->get_boolean('pgcache.late_caching')) && !is_admin()) {
$o = Dispatcher::component('PgCache_ContentGrabber');
add_action('init', array($o, 'delayed_cache_print'), 99999);
}
if (!$this->_config->get_boolean('pgcache.mirrors.enabled') && !Util_Environment::is_wpmu_subdomain()) {
add_action('init', array($this, 'redirect_on_foreign_domain'));
}
}
/**
* Returns blog_id by home url
* If database not initialized yet - returns 0
*
* @return integer
*/
public static function get_current_blog_data()
{
$host = Util_Environment::host();
// subdomain
if (Util_Environment::is_wpmu_subdomain()) {
$blog_data = Util_WpmuBlogmap::try_get_current_blog_data($host);
if (is_null($blog_data)) {
$GLOBALS['w3tc_blogmap_register_new_item'] = $host;
}
return $blog_data;
} else {
// try subdir blog
$url = $host . $_SERVER['REQUEST_URI'];
$pos = strpos($url, '?');
if ($pos !== false) {
$url = substr($url, 0, $pos);
}
$url = rtrim($url, '/');
$start_url = $url;
for (;;) {
$blog_data = Util_WpmuBlogmap::try_get_current_blog_data($url);
if (!is_null($blog_data)) {
return $blog_data;
}
$pos = strrpos($url, '/');
if ($pos === false) {
break;
}
$url = rtrim(substr($url, 0, $pos), '/');
}
$GLOBALS['w3tc_blogmap_register_new_item'] = $start_url;
return null;
}
}
/**
* Remove script tags from the source
*
* @param string $content
* @param array $files
* @return void
*/
function remove_scripts(&$content, $files)
{
$regexps = array();
$home_url_regexp = Util_Environment::home_url_regexp();
$path = '';
if (Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain()) {
$path = ltrim(Util_Environment::home_url_uri(), '/');
}
foreach ($files as $file) {
if ($path && strpos($file, $path) === 0) {
$file = substr($file, strlen($path));
}
$this->replaced_scripts[] = $file;
if (Util_Environment::is_url($file) && !preg_match('~' . $home_url_regexp . '~i', $file)) {
// external JS files
$regexps[] = Util_Environment::preg_quote($file);
} else {
// local JS files
$file = ltrim($file, '/');
if (home_url() == site_url() && ltrim(Util_Environment::site_url_uri(), '/') && strpos($file, ltrim(Util_Environment::site_url_uri(), '/')) === 0) {
$file = str_replace(ltrim(Util_Environment::site_url_uri(), '/'), '', $file);
}
$file = ltrim(preg_replace('~' . $home_url_regexp . '~i', '', $file), '/\\');
$regexps[] = '(' . $home_url_regexp . ')?/?' . Util_Environment::preg_quote($file);
}
}
foreach ($regexps as $regexp) {
$content = preg_replace('~<script\\s+[^<>]*src=["\']?' . $regexp . '["\']?[^<>]*>\\s*</script>~Uis', '', $content);
}
}
/**
* Generates rules
*
* @param Config $config
* @return string
*/
function rules_core_generate_nginx($config)
{
$cache_dir = Util_Rule::filename_to_uri(W3TC_CACHE_MINIFY_DIR);
$first_regex_var = '$1';
// for subdir - need to count subdir in url
if (Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain()) {
// take into accont case when whole subdir wpmu is installed in subdir
$home_uri = network_home_url('', 'relative');
if (substr($cache_dir, 0, strlen($home_uri)) == $home_uri) {
$cache_dir = $home_uri . '([a-z0-9]+/)?' . substr($cache_dir, strlen($home_uri));
} else {
$cache_dir = '(/[a-z0-9]+)?' . $cache_dir;
}
$first_regex_var = '$2';
}
$minify_uri = rtrim(network_site_url('', 'relative'), '/') . '/';
$engine = $config->get_string('minify.engine');
$browsercache = $config->get_boolean('browsercache.enabled');
$compression = $browsercache && $config->get_boolean('browsercache.cssjs.compression') && !defined('W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF');
$rules = '';
$rules .= W3TC_MARKER_BEGIN_MINIFY_CORE . "\n";
if ($engine == 'file') {
$rules .= "set \$w3tc_enc \"\";\n";
if ($compression) {
$rules .= "if (\$http_accept_encoding ~ gzip) {\n";
$rules .= " set \$w3tc_enc .gzip;\n";
$rules .= "}\n";
}
$rules .= "if (-f \$request_filename\$w3tc_enc) {\n";
$rules .= " rewrite (.*) \$1\$w3tc_enc break;\n";
$rules .= "}\n";
}
$rules .= "rewrite ^{$cache_dir}/ {$minify_uri}index.php last;\n";
$rules .= W3TC_MARKER_END_MINIFY_CORE . "\n";
return $rules;
}
</table>
<?php
echo Util_Ui::button_config_save('pagecache_general');
?>
<?php
Util_Ui::postbox_footer();
?>
<?php
Util_Ui::postbox_header(__('Aliases', 'w3-total-cache'), '', 'mirrors');
?>
<table class="form-table">
<?php
Util_Ui::config_item(array('key' => 'pgcache.mirrors.enabled', 'control' => 'checkbox', 'label' => __('Cache Alias Hostnames:', 'w3-total-cache'), 'checkbox_label' => __('Enable', 'w3-total-cache'), 'enabled' => !Util_Environment::is_wpmu_subdomain(), 'description' => __('If the same Wordpress content is accessed from different domains', 'w3-total-cache')));
Util_Ui::config_item(array('key' => 'pgcache.mirrors.home_urls', 'control' => 'textarea', 'label' => __('Additional Home URLs:', 'w3-total-cache'), 'enabled' => !Util_Environment::is_wpmu_subdomain(), 'description' => __('Specify full home URLs of your mirrors so that plugin will flush it\'s cache when content is changed. For example:<br /> http://my-site.com<br />http://www.my-site.com<br />https://my-site.com', 'w3-total-cache')));
?>
</table>
<?php
echo Util_Ui::button_config_save('pagecache_aliases');
?>
<?php
Util_Ui::postbox_footer();
?>
<?php
Util_Ui::postbox_header(__('Cache Preload', 'w3-total-cache'), '', 'cache_preload');
?>
<table class="form-table">
<tr>
<th colspan="2">
}
?>
</li>
<li>
<?php
_e('Network mode:', 'w3-total-cache');
?>
<?php
if (Util_Environment::is_wpmu()) {
?>
<code><?php
_e('Yes', 'w3-total-cache');
?>
(<?php
echo Util_Environment::is_wpmu_subdomain() ? 'subdomain' : 'subdir';
?>
)</code>
<?php
} else {
?>
<code><?php
_e('No', 'w3-total-cache');
?>
</code>
<?php
}
?>
</li>
</ul>
</div>
/**
* Generate rules related to prevent for media 404 error by WP
*
* @param Config $config
* @return string
*/
private function rules_no404wp_generate_apache($config)
{
$a = $this->get_mime_types();
$cssjs_types = $a['cssjs'];
$html_types = $a['html'];
$other_types = $a['other'];
$extensions = array_merge(array_keys($cssjs_types), array_keys($html_types), array_keys($other_types));
$permalink_structure = get_option('permalink_structure');
$permalink_structure_ext = ltrim(strrchr($permalink_structure, '.'), '.');
if ($permalink_structure_ext != '') {
foreach ($extensions as $index => $extension) {
if (strstr($extension, $permalink_structure_ext) !== false) {
$extensions[$index] = preg_replace('~\\|?' . Util_Environment::preg_quote($permalink_structure_ext) . '\\|?~', '', $extension);
}
}
}
$exceptions = $config->get_array('browsercache.no404wp.exceptions');
$wp_uri = network_home_url('', 'relative');
$wp_uri = rtrim($wp_uri, '/');
$rules = '';
$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP . "\n";
$rules .= "<IfModule mod_rewrite.c>\n";
$rules .= " RewriteEngine On\n";
// in subdir - rewrite theme files and similar to upper folder if file exists
if (Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain()) {
$rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-d\n";
$rules .= " RewriteCond %{REQUEST_URI} ^{$wp_uri}/([_0-9a-zA-Z-]+/)(.*\\.)(" . implode('|', $extensions) . ")\$ [NC]\n";
$document_root = Util_Rule::apache_docroot_variable();
$rules .= ' RewriteCond "' . $document_root . $wp_uri . '/%2%3" -f' . "\n";
$rules .= " RewriteRule .* {$wp_uri}/%2%3 [L]\n\n";
}
$rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-d\n";
$imploded = implode('|', $exceptions);
if (!empty($imploded)) {
$rules .= " RewriteCond %{REQUEST_URI} !(" . $imploded . ")\n";
}
$rules .= " RewriteCond %{REQUEST_URI} \\.(" . implode('|', $extensions) . ")\$ [NC]\n";
$rules .= " RewriteRule .* - [L]\n";
$rules .= "</IfModule>\n";
$rules .= W3TC_MARKER_END_BROWSERCACHE_NO404WP . "\n";
return $rules;
}
/**
* Returns the sitepath for multisite subfolder or subdomain path for multisite subdomain
*
* @return string
*/
private function _get_multisite_url_identifier()
{
if (defined('DOMAIN_MAPPING') && DOMAIN_MAPPING) {
$parsedUrl = parse_url(site_url());
return $parsedUrl['host'];
} elseif (Util_Environment::is_wpmu_subdomain()) {
$parsedUrl = parse_url(Util_Environment::home_domain_root_url());
$urlparts = explode('.', $parsedUrl['host']);
if (sizeof($urlparts) > 2) {
$subdomain = array_shift($urlparts);
return trim($subdomain, '/');
}
}
return trim(Util_Environment::site_url_uri(), '/');
}
/**
* Flush cache based on regex
*
* @param string $regex
*/
private function _flush_based_on_regex($regex)
{
if (Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain()) {
$domain = get_home_url();
$parsed = parse_url($domain);
$host = $parsed['host'];
$path = isset($parsed['path']) ? '/' . trim($parsed['path'], '/') : '';
$flush_dir = W3TC_CACHE_PAGE_ENHANCED_DIR . '/' . $host . $path;
} else {
$flush_dir = W3TC_CACHE_PAGE_ENHANCED_DIR . '/' . Util_Environment::host();
}
$dir = @opendir($flush_dir);
if ($dir) {
while (($entry = @readdir($dir)) !== false) {
if ($entry == '.' || $entry == '..') {
continue;
}
if (preg_match('/' . $regex . '/', basename($entry))) {
Util_File::rmdir($flush_dir . DIRECTORY_SEPARATOR . $entry);
}
}
@closedir($dir);
}
}
/**
* Init action
*
* @return void
*/
function init()
{
// Load plugin text domain
load_plugin_textdomain(W3TC_TEXT_DOMAIN, null, plugin_basename(W3TC_DIR) . '/languages/');
if (is_multisite() && !is_network_admin()) {
global $w3_current_blog_id, $current_blog;
if ($w3_current_blog_id != $current_blog->blog_id && !isset($GLOBALS['w3tc_blogmap_register_new_item'])) {
$url = Util_Environment::host_port() . $_SERVER['REQUEST_URI'];
$pos = strpos($url, '?');
if ($pos !== false) {
$url = substr($url, 0, $pos);
}
$GLOBALS['w3tc_blogmap_register_new_item'] = $url;
}
}
if (isset($GLOBALS['w3tc_blogmap_register_new_item'])) {
$do_redirect = false;
// true value is a sign to just generate config cache
if ($GLOBALS['w3tc_blogmap_register_new_item'] != 'cache_options') {
if (Util_Environment::is_wpmu_subdomain()) {
$blog_home_url = $GLOBALS['w3tc_blogmap_register_new_item'];
} else {
$home_url = rtrim(get_home_url(), '/');
if (substr($home_url, 0, 7) == 'http://') {
$home_url = substr($home_url, 7);
} else {
if (substr($home_url, 0, 8) == 'https://') {
$home_url = substr($home_url, 8);
}
}
if (substr($GLOBALS['w3tc_blogmap_register_new_item'], 0, strlen($home_url)) == $home_url) {
$blog_home_url = $home_url;
} else {
$blog_home_url = $GLOBALS['w3tc_blogmap_register_new_item'];
}
}
$do_redirect = Util_WpmuBlogmap::register_new_item($blog_home_url, $this->_config);
// reset cache of blog_id
global $w3_current_blog_id;
$w3_current_blog_id = null;
// change config to actual blog, it was master before
$this->_config = new Config();
// fix environment, potentially it's first request to a specific blog
$environment = Dispatcher::component('Root_Environment');
$environment->fix_on_event($this->_config, 'first_frontend', $this->_config);
}
// need to repeat request processing, since we was not able to realize
// blog_id before so we are running with master config now.
// redirect to the same url causes "redirect loop" error in browser,
// so need to redirect to something a bit different
if ($do_redirect) {
if (strpos($_SERVER['REQUEST_URI'], '?') === false) {
Util_Environment::redirect_temp($_SERVER['REQUEST_URI'] . '?repeat=w3tc');
} else {
if (strpos($_SERVER['REQUEST_URI'], 'repeat=w3tc') === false) {
Util_Environment::redirect_temp($_SERVER['REQUEST_URI'] . '&repeat=w3tc');
}
}
}
}
/**
* Check for rewrite test request
*/
$rewrite_test = Util_Request::get_boolean('w3tc_rewrite_test');
if ($rewrite_test) {
echo 'OK';
exit;
}
$admin_bar = false;
if (function_exists('is_admin_bar_showing')) {
$admin_bar = is_admin_bar_showing();
}
if ($admin_bar) {
add_action('wp_print_scripts', array($this, 'popup_script'));
}
// dont add system stuff to search results
if (isset($_GET['repeat']) && $_GET['repeat'] == 'w3tc' || Util_Environment::is_preview_mode()) {
header('X-Robots-Tag: noindex');
}
}
private function do_flush()
{
if (!is_network_admin()) {
$queued_urls[get_home_url() . '/.*'] = '*';
// add mirror urls
$queued_urls = Util_PageUrls::complement_with_mirror_urls($queued_urls);
foreach ($queued_urls as $url => $nothing) {
$this->_purge($url);
}
} else {
// todo: remove. doesnt work for all caches.
// replace with tool to flush network
global $wpdb;
$protocall = Util_Environment::is_https() ? 'https://' : 'http://';
// If WPMU Domain Mapping plugin is installed and active
if (defined('SUNRISE_LOADED') && SUNRISE_LOADED && isset($wpdb->dmtable) && !empty($wpdb->dmtable)) {
$blogs = $wpdb->get_results("SELECT {$wpdb->blogs}.domain, {$wpdb->blogs}.path, {$wpdb->dmtable}.domain AS mapped_domain\n FROM {$wpdb->dmtable}\n RIGHT JOIN {$wpdb->blogs} ON {$wpdb->dmtable}.blog_id = {$wpdb->blogs}.blog_id\n WHERE site_id = {$wpdb->siteid}\n AND spam = 0\n AND deleted = 0\n AND archived = '0'\n ");
foreach ($blogs as $blog) {
if (!isset($blog->mapped_domain)) {
$url = $protocall . $blog->domain . (strlen($blog->path) > 1 ? '/' . trim($blog->path, '/') : '') . '/.*';
} else {
$url = $protocall . $blog->mapped_domain . '/.*';
}
$this->_purge($url);
}
} else {
if (!Util_Environment::is_wpmu_subdomain()) {
$this->_purge(get_home_url() . '/.*');
} else {
$blogs = $wpdb->get_results("\n SELECT domain, path\n FROM {$wpdb->blogs}\n WHERE site_id = '{$wpdb->siteid}'\n AND spam = 0\n AND deleted = 0\n AND archived = '0'\n ");
foreach ($blogs as $blog) {
$url = $protocall . $blog->domain . (strlen($blog->path) > 1 ? '/' . trim($blog->path, '/') : '') . '/.*';
$this->_purge($url);
}
}
}
}
}
/**
* Returns if there is multisite mode
*
* @return boolean
*/
public static function is_wpmu()
{
static $wpmu = null;
if ($wpmu === null) {
$wpmu = file_exists(ABSPATH . 'wpmu-settings.php') || defined('MULTISITE') && MULTISITE || defined('SUNRISE') || Util_Environment::is_wpmu_subdomain();
}
return $wpmu;
}
public static function complement_with_mirror_urls($queued_urls)
{
$config = Dispatcher::config();
if (!$config->get_boolean('pgcache.mirrors.enabled') || Util_Environment::is_wpmu_subdomain()) {
return $queued_urls;
}
$home_urls = $config->get_array('pgcache.mirrors.home_urls');
$url_prefix = trailingslashit(get_home_url());
$urls = array_keys($queued_urls);
foreach ($urls as $url) {
if (substr($url, 0, strlen($url_prefix)) != $url_prefix) {
continue;
}
foreach ($home_urls as $home) {
if (!empty($home)) {
$mirror_url = $home . substr($url, strlen($url_prefix));
$queued_urls[$mirror_url] = '*';
}
}
}
return $queued_urls;
}
