/**
* Check if plugin is locked
*
* @return boolean
*/
function locked()
{
static $locked = null;
if ($locked === null) {
if (w3_is_wpmu()) {
if (isset($_GET['sitewide'])) {
$locked = false;
} else {
global $blog_id;
$blogs = get_blog_list();
foreach ($blogs as $blog) {
if ($blog['blog_id'] != $blog_id) {
$active_plugins = get_blog_option($blog['blog_id'], 'active_plugins');
if (in_array(W3TC_FILE, $active_plugins)) {
$locked = true;
break;
}
}
}
}
} else {
$locked = false;
}
}
return $locked;
}
/**
* Returns if there is multisite mode
*
* @return boolean
*/
function w3_is_network()
{
return w3_is_wpmu() || w3_is_multisite();
}
/**
* Activate plugin action
*
* @return void
*/
function activate()
{
require_once W3TC_INC_DIR . '/functions/activation.php';
/**
* Disable buggy sitewide activation in WPMU and WP 3.0
*/
if (w3_is_wpmu() && isset($_GET['sitewide']) || w3_is_multisite() && isset($_GET['networkwide'])) {
w3_network_activate_error();
}
/**
* Check installation files
*/
$files = array(W3TC_INSTALL_FILE_ADVANCED_CACHE, W3TC_INSTALL_FILE_DB, W3TC_INSTALL_FILE_OBJECT_CACHE);
$nonexistent_files = array();
foreach ($files as $file) {
if (!file_exists($file)) {
$nonexistent_files[] = $file;
}
}
if (count($nonexistent_files)) {
$error = sprintf('Unfortunately core file(s): (<strong>%s</strong>) are missing, so activation will fail. Please re-start the installation process from the beginning.', implode(', ', $nonexistent_files));
w3_activate_error($error);
}
if (!@is_dir(W3TC_CONTENT_DIR) && !@mkdir(W3TC_CONTENT_DIR)) {
w3_writable_error(W3TC_CONTENT_DIR);
}
if (!@is_dir(W3TC_CACHE_FILE_DBCACHE_DIR) && !@mkdir(W3TC_CACHE_FILE_DBCACHE_DIR)) {
w3_writable_error(W3TC_CACHE_FILE_DBCACHE_DIR);
}
if (!@is_dir(W3TC_CACHE_FILE_OBJECTCACHE_DIR) && !@mkdir(W3TC_CACHE_FILE_OBJECTCACHE_DIR)) {
w3_writable_error(W3TC_CACHE_FILE_OBJECTCACHE_DIR);
}
if (!@is_dir(W3TC_CACHE_FILE_PGCACHE_DIR) && !@mkdir(W3TC_CACHE_FILE_PGCACHE_DIR)) {
w3_writable_error(W3TC_CACHE_FILE_PGCACHE_DIR);
}
if (!@is_dir(W3TC_CACHE_FILE_MINIFY_DIR) && !@mkdir(W3TC_CACHE_FILE_MINIFY_DIR)) {
w3_writable_error(W3TC_CACHE_FILE_MINIFY_DIR);
}
if (!@is_dir(W3TC_LOG_DIR) && !@mkdir(W3TC_LOG_DIR)) {
w3_writable_error(W3TC_LOG_DIR);
}
if (!@is_dir(W3TC_TMP_DIR) && !@mkdir(W3TC_TMP_DIR)) {
w3_writable_error(W3TC_TMP_DIR);
}
if (w3_is_network() && file_exists(W3TC_CONFIG_MASTER_PATH)) {
/**
* For multisite load master config
*/
$this->_config->load_master();
if (!$this->_config->save(false)) {
w3_writable_error(W3TC_CONFIG_PATH);
}
} elseif (!file_exists(W3TC_CONFIG_PATH)) {
/**
* Set default settings
*/
$this->_config->set_defaults();
/**
* If config doesn't exist enable preview mode
*/
if (!$this->_config->save(true)) {
w3_writable_error(W3TC_CONFIG_PREVIEW_PATH);
}
}
/**
* Save blognames into file
*/
if (w3_is_network() && !w3_is_subdomain_install()) {
if (!w3_save_blognames()) {
w3_writable_error(W3TC_BLOGNAMES_PATH);
}
}
delete_option('w3tc_request_data');
add_option('w3tc_request_data', '', null, 'no');
}
/**
* Detect WPMU blogname
*
* @return string
*/
function w3_get_blogname()
{
static $blogname = null;
if ($blogname === null) {
if (w3_is_wpmu()) {
$domain = w3_get_domain($_SERVER['HTTP_HOST']);
if (w3_is_vhost()) {
$blogname = $domain;
} else {
$uri = $_SERVER['REQUEST_URI'];
$site_path = w3_get_site_path();
if ($site_path != '' && strpos($uri, $site_path) === 0) {
$uri = substr_replace($uri, '/', 0, strlen($site_path));
}
$blogname = w3_get_blogname_from_uri($uri);
if ($blogname != '') {
$blogname = $blogname . '.' . $domain;
} else {
$blogname = $domain;
}
}
} else {
$blogname = '';
}
}
return $blogname;
}
/**
* Generates rules for WP dir
*
* @return string
*/
function generate_rules_core()
{
global $w3_reserved_blognames;
/**
* Auto reject cookies
*/
$reject_cookies = array('comment_author', 'wp-postpass');
/**
* Auto reject URIs
*/
$reject_uris = array('\\/wp-admin\\/', '\\/xmlrpc.php', '\\/wp-(app|cron|login|register).php');
/**
* Reject cache for logged in users
*/
if ($this->_config->get_boolean('pgcache.reject.logged')) {
$reject_cookies = array_merge($reject_cookies, array('wordpress_[a-f0-9]+', 'wordpress_logged_in'));
}
/**
* Reject cache for home page
*/
if (!$this->_config->get_boolean('pgcache.cache.home')) {
$reject_uris[] = '^(\\/|\\/index.php)$';
}
/**
* Reject cache for feeds
*/
if (!$this->_config->get_boolean('pgcache.cache.feed')) {
$reject_uris[] = 'feed';
}
/**
* Custom config
*/
$reject_cookies = array_merge($reject_cookies, $this->_config->get_array('pgcache.reject.cookie'));
$reject_uris = array_merge($reject_uris, $this->_config->get_array('pgcache.reject.uri'));
$reject_user_agents = $this->_config->get_array('pgcache.reject.ua');
$accept_files = $this->_config->get_array('pgcache.accept.files');
/**
* WPMU support
*/
$is_wpmu = w3_is_wpmu();
$is_vhost = w3_is_vhost();
/**
* Generate directives
*/
$rules = '';
$rules .= "# BEGIN W3 Total Cache\n";
$setenvif_rules = '';
if ($is_wpmu) {
$setenvif_rules .= " SetEnvIfNoCase Host ^(www\\.)?([a-z0-9\\-\\.]+\\.[a-z]+)\\.?(:[0-9]+)?\$ DOMAIN=\$2\n";
if (!$is_vhost) {
$setenvif_rules .= " SetEnvIfNoCase Request_URI ^" . w3_get_site_path() . "([a-z0-9\\-]+)/ BLOGNAME=\$1\n";
}
}
$compression = $this->_config->get_string('pgcache.compression');
if ($compression != '') {
$compressions = array();
if (stristr($compression, 'gzip') !== false) {
$compressions[] = 'gzip';
}
if (stristr($compression, 'deflate') !== false) {
$compressions[] = 'deflate';
}
if (count($compressions)) {
$setenvif_rules .= " SetEnvIfNoCase Accept-Encoding (" . implode('|', $compressions) . ") APPEND_EXT=.\$1\n";
}
}
if ($setenvif_rules != '') {
$rules .= "<IfModule mod_setenvif.c>\n" . ($setenvif_rules .= "</IfModule>\n");
}
$rules .= "<IfModule mod_rewrite.c>\n";
$rules .= " RewriteEngine On\n";
$mobile_redirect = $this->_config->get_string('pgcache.mobile.redirect');
if ($mobile_redirect != '') {
$mobile_agents = $this->_config->get_array('pgcache.mobile.agents');
$rules .= " RewriteCond %{HTTP_USER_AGENT} (" . implode('|', array_map('w3_preg_quote', $mobile_agents)) . ") [NC]\n";
$rules .= " RewriteRule .* " . $mobile_redirect . " [R,L]\n";
}
$rules .= " RewriteCond %{REQUEST_URI} \\/\$\n";
$rules .= " RewriteCond %{REQUEST_URI} !(" . implode('|', $reject_uris) . ")";
if (count($accept_files)) {
$rules .= " [OR]\n RewriteCond %{REQUEST_URI} (" . implode('|', array_map('w3_preg_quote', $accept_files)) . ") [NC]\n";
} else {
$rules .= "\n";
}
$rules .= " RewriteCond %{REQUEST_METHOD} !=POST\n";
$rules .= " RewriteCond %{QUERY_STRING} =\"\"\n";
$rules .= " RewriteCond %{HTTP_COOKIE} !(" . implode('|', array_map('w3_preg_quote', $reject_cookies)) . ") [NC]\n";
if (count($reject_user_agents)) {
$rules .= " RewriteCond %{HTTP_USER_AGENT} !(" . implode('|', array_map('w3_preg_quote', $reject_user_agents)) . ") [NC]\n";
}
if ($is_wpmu) {
if ($is_vhost) {
$replacement = '/w3tc-%{ENV:DOMAIN}/';
} else {
$rules .= " RewriteCond %{ENV:BLOGNAME} !^(" . implode('|', $w3_reserved_blognames) . ")\$\n";
$rules .= " RewriteCond %{ENV:BLOGNAME} !-f\n";
$rules .= " RewriteCond %{ENV:BLOGNAME} !-d\n";
$replacement = '/w3tc-%{ENV:BLOGNAME}.%{ENV:DOMAIN}/';
}
$cache_dir = preg_replace('~/w3tc.*/~U', $replacement, W3TC_CACHE_FILE_PGCACHE_DIR, 1);
} else {
$cache_dir = W3TC_CACHE_FILE_PGCACHE_DIR;
}
$rules .= " RewriteCond " . w3_path($cache_dir) . "/\$1/_default_.html%{ENV:APPEND_EXT} -f\n";
$rules .= " RewriteRule (.*) " . str_replace(ABSPATH, '', $cache_dir) . "/\$1/_default_.html%{ENV:APPEND_EXT} [L]\n";
$rules .= "</IfModule>\n";
$rules .= "# END W3 Total Cache\n\n";
if (!$this->check_rules_wp()) {
$rules .= "# BEGIN WordPress\n";
$rules .= "<IfModule mod_rewrite.c>\n";
$rules .= " RewriteEngine On\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-d\n";
$rules .= " RewriteRule .* index.php [L]\n";
$rules .= "</IfModule>\n";
$rules .= "# END WordPress\n\n";
}
return $rules;
}
/**
* Options save action
*/
function options_save()
{
require_once W3TC_LIB_W3_DIR . '/Request.php';
/**
* Redirect params
*/
$params = array();
/**
* Read config
*/
$config =& new W3_Config();
$config->read_request();
/**
* General tab
*/
if ($this->_tab == 'general') {
$debug = W3_Request::get_array('debug');
$config->set('dbcache.debug', in_array('dbcache', $debug));
$config->set('pgcache.debug', in_array('pgcache', $debug));
$config->set('minify.debug', in_array('minify', $debug));
$config->set('cdn.debug', in_array('cdn', $debug));
/**
* Page cache tab
*/
if ($config->get_boolean('pgcache.enabled') && $config->get_string('pgcache.engine') == 'file_pgcache' && get_option('permalink_structure') == '') {
$this->redirect(array('error' => 'fancy_permalinks_disabled'));
}
/**
* Show notification when CDN enabled
*/
if ($this->_config->get_boolean('cdn.enabled') == false && $config->get_boolean('cdn.enabled') == true && $config->get_string('cdn.engine') != 'mirror') {
$config->set('notes.cdn_upload', true);
}
}
/**
* Minify tab
*/
if ($this->_tab == 'minify') {
$groups = $this->minify_get_groups();
$js_group = W3_Request::get_string('js_group');
$js_files = W3_Request::get_array('js_files');
$css_group = W3_Request::get_string('css_group');
$css_files = W3_Request::get_array('css_files');
$js_groups = array();
$css_groups = array();
foreach ($js_files as $group => $locations) {
if (!array_key_exists($group, $groups)) {
continue;
}
foreach ((array) $locations as $location => $files) {
switch ($location) {
case 'include':
$js_groups[$group][$location]['blocking'] = true;
break;
case 'include-nb':
$js_groups[$group][$location]['blocking'] = false;
break;
case 'include-footer':
$js_groups[$group][$location]['blocking'] = true;
break;
case 'include-footer-nb':
$js_groups[$group][$location]['blocking'] = false;
break;
}
foreach ((array) $files as $file) {
if (!empty($file)) {
$js_groups[$group][$location]['files'][] = w3_normalize_file($file);
}
}
}
}
foreach ($css_files as $group => $locations) {
if (!array_key_exists($group, $groups)) {
continue;
}
foreach ((array) $locations as $location => $files) {
foreach ((array) $files as $file) {
if (!empty($file)) {
$css_groups[$group][$location]['files'][] = w3_normalize_file($file);
}
}
}
}
$config->set('minify.js.groups', $js_groups);
$config->set('minify.css.groups', $css_groups);
$params = array_merge($params, array('js_group' => $js_group, 'css_group' => $css_group));
}
/**
* Handle settings change that require pgcache and minify empty
*/
$pgcache_dependencies = array('pgcache.debug', 'dbcache.enabled', 'minify.enabled', 'cdn.enabled');
if ($config->get_boolean('dbcache.enabled')) {
$pgcache_dependencies = array_merge($pgcache_dependencies, array('dbcache.debug'));
}
if ($config->get_boolean('minify.enabled')) {
$pgcache_dependencies = array_merge($pgcache_dependencies, array('minify.debug', 'minify.rewrite', 'minify.options', 'minify.html.enable', 'minify.html.reject.admin', 'minify.html.inline.css', 'minify.html.inline.js', 'minify.html.strip.crlf', 'minify.css.enable', 'minify.css.groups', 'minify.js.enable', 'minify.js.groups'));
}
if ($config->get_boolean('cdn.enabled')) {
$pgcache_dependencies = array_merge($pgcache_dependencies, array('cdn.debug', 'cdn.engine', 'cdn.includes.enable', 'cdn.includes.files', 'cdn.theme.enable', 'cdn.theme.files', 'cdn.minify.enable', 'cdn.custom.enable', 'cdn.custom.files', 'cdn.ftp.domain', 'cdn.s3.bucket', 'cdn.cf.id', 'cdn.cf.cname'));
}
$minify_dependencies = array('minify.debug', 'minify.css.combine', 'minify.css.strip.comments', 'minify.css.strip.crlf', 'minify.css.groups', 'minify.js.combine.header', 'minify.js.combine.footer', 'minify.js.strip.comments', 'minify.js.strip.crlf', 'minify.js.groups');
$old_pgcache_dependencies_values = array();
$new_pgcache_dependencies_values = array();
$old_minify_dependencies_values = array();
$new_minify_dependencies_values = array();
foreach ($pgcache_dependencies as $pgcache_dependency) {
$old_pgcache_dependencies_values[] = $this->_config->get($pgcache_dependency);
$new_pgcache_dependencies_values[] = $config->get($pgcache_dependency);
}
foreach ($minify_dependencies as $minify_dependency) {
$old_minify_dependencies_values[] = $this->_config->get($minify_dependency);
$new_minify_dependencies_values[] = $config->get($minify_dependency);
}
if ($this->_config->get_boolean('pgcache.enabled') && serialize($old_pgcache_dependencies_values) != serialize($new_pgcache_dependencies_values)) {
$config->set('notes.need_empty_pgcache', true);
}
if ($this->_config->get_boolean('minify.enabled') && serialize($old_minify_dependencies_values) != serialize($new_minify_dependencies_values)) {
$config->set('notes.need_empty_minify', true);
}
/**
* Save config
*/
if ($config->save()) {
require_once W3TC_LIB_W3_DIR . '/Plugin/PgCache.php';
require_once W3TC_LIB_W3_DIR . '/Plugin/DbCache.php';
require_once W3TC_LIB_W3_DIR . '/Plugin/Cdn.php';
$w3_plugin_pgcache =& W3_Plugin_PgCache::instance();
$w3_plugin_dbcache =& W3_Plugin_DbCache::instance();
$w3_plugin_cdn =& W3_Plugin_Cdn::instance();
if (W3TC_PHP5) {
require_once W3TC_LIB_W3_DIR . '/Plugin/Minify.php';
$w3_plugin_minify =& W3_Plugin_Minify::instance();
}
/**
* Empty caches on engine change or cache enable/disable
*/
if ($this->_config->get_string('pgcache.engine') != $config->get_string('pgcache.engine') || $this->_config->get_string('pgcache.enabled') != $config->get_string('pgcache.enabled')) {
$this->flush_pgcache();
}
if ($this->_config->get_string('dbcache.engine') != $config->get_string('dbcache.engine') || $this->_config->get_string('dbcache.enabled') != $config->get_string('dbcache.enabled')) {
$this->flush_dbcache();
}
if ($this->_config->get_string('minify.engine') != $config->get_string('minify.engine') || $this->_config->get_string('minify.enabled') != $config->get_string('minify.enabled')) {
$this->flush_minify();
}
/**
* Unschedule events if changed file gc interval
*/
if ($this->_config->get_boolean('pgcache.file.gc') != $config->get_boolean('pgcache.file.gc')) {
$w3_plugin_pgcache->unschedule();
}
if ($this->_config->get_boolean('dbcache.file.gc') != $config->get_boolean('dbcache.file.gc')) {
$w3_plugin_dbcache->unschedule();
}
if (W3TC_PHP5 && $this->_config->get_boolean('minify.file.gc') != $config->get_boolean('minify.file.gc')) {
$w3_plugin_minify->unschedule();
}
$this->_config->load();
/**
* Schedule events
*/
$w3_plugin_pgcache->schedule();
$w3_plugin_dbcache->schedule();
$w3_plugin_cdn->schedule();
if (W3TC_PHP5) {
$w3_plugin_minify->schedule();
}
/**
* Update support us option
*/
$this->link_update();
/**
* Auto upload minify files to CDN
*/
if ($this->_tab == 'minify' && $this->_config->get_boolean('minify.upload') && $this->_config->get_boolean('cdn.enabled') && $this->_config->get_string('cdn.engine') != 'mirror') {
$this->cdn_upload_minify();
}
/**
* Write page cache rewrite rules
*/
if ($this->_tab == 'general' || $this->_tab == 'pgcache') {
$is_wpmu = w3_is_wpmu();
if ($this->_config->get_boolean('pgcache.enabled') && $this->_config->get_string('pgcache.engine') == 'file_pgcache') {
if (!$is_wpmu) {
$w3_plugin_pgcache->write_rules_core();
}
$w3_plugin_pgcache->write_rules_cache();
} else {
if (!$is_wpmu) {
$w3_plugin_pgcache->remove_rules_core();
}
$w3_plugin_pgcache->remove_rules_cache();
}
}
/**
* Write minify rewrite rules
*/
if (W3TC_PHP5 && ($this->_tab == 'general' || $this->_tab == 'minify')) {
if ($this->_config->get_boolean('minify.enabled') && $this->_config->get_boolean('minify.rewrite')) {
$w3_plugin_minify->write_rules();
} else {
require_once W3TC_DIR . '/lib/W3/Plugin/Minify.php';
$w3_plugin_minify->remove_rules();
}
}
$this->redirect(array_merge($params, array('note' => 'config_save')));
} else {
$this->redirect(array_merge($params, array('error' => 'config_save')));
}
}
