/**
* 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;
}