/**
* Returns blogname from URI
*
* @param string $uri
* @return string
*/
function w3_get_blogname_from_uri($uri)
{
$blogname = '';
$matches = null;
$uri = strtolower($uri);
if (preg_match('~^/([a-z0-9-]+)/~', $uri, $matches)) {
if (file_exists(W3TC_BLOGNAMES_PATH)) {
// Get blognames from cache
$blognames = w3_load_blognames();
} elseif (isset($GLOBALS['wpdb'])) {
// Get blognames from DB
$blognames = w3_get_blognames();
} else {
$blognames = array();
}
if (is_array($blognames) && in_array($matches[1], $blognames)) {
$blogname = $matches[1];
}
}
return $blogname;
}
/**
* Generates rules for WP dir
*
* @return string
*/
function generate_rules_core_nginx()
{
$is_network = w3_is_network();
$is_vhost = w3_is_subdomain_install();
$base_path = w3_get_base_path();
$cache_dir = w3_path(W3TC_CACHE_FILE_PGCACHE_DIR);
$permalink_structure = get_option('permalink_structure');
/**
* Auto reject cookies
*/
$reject_cookies = array('comment_author', 'wp-postpass');
/**
* Auto reject URIs
*/
$reject_uris = array('\\/wp-admin\\/', '\\/xmlrpc.php', '\\/wp-(app|cron|login|register|mail)\\.php');
/**
* Reject cache for logged in users
*/
if ($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_uris = array_map('w3_parse_path', $reject_uris);
$reject_user_agents = array_merge(array(W3TC_POWERED_BY), $this->_config->get_array('pgcache.reject.ua'));
$accept_uris = $this->_config->get_array('pgcache.accept.uri');
$accept_files = $this->_config->get_array('pgcache.accept.files');
/**
* Generate rules
*/
$rules = '';
$rules .= W3TC_MARKER_BEGIN_PGCACHE_CORE . "\n";
$rules .= "rewrite ^(.*\\/)?w3tc_rewrite_test\$ \$1?w3tc_rewrite_test=1 last;\n";
/**
* Check for mobile redirect
*/
if ($this->_config->get_boolean('mobile.enabled')) {
$mobile_groups = $this->_config->get_array('mobile.rgroups');
foreach ($mobile_groups as $mobile_group => $mobile_config) {
$mobile_enabled = isset($mobile_config['enabled']) ? (bool) $mobile_config['enabled'] : false;
$mobile_agents = isset($mobile_config['agents']) ? (array) $mobile_config['agents'] : '';
$mobile_redirect = isset($mobile_config['redirect']) ? $mobile_config['redirect'] : '';
if ($mobile_enabled && count($mobile_agents) && $mobile_redirect) {
$rules .= "if (\$http_user_agent ~* \"(" . implode('|', $mobile_agents) . ")\") {\n";
$rules .= " rewrite .* " . $mobile_redirect . " last;\n";
$rules .= "}\n";
}
}
}
/**
* Check for referrer redirect
*/
if ($this->_config->get_boolean('referrer.enabled')) {
$referrer_groups = $this->_config->get_array('referrer.rgroups');
foreach ($referrer_groups as $referrer_group => $referrer_config) {
$referrer_enabled = isset($referrer_config['enabled']) ? (bool) $referrer_config['enabled'] : false;
$referrer_referrers = isset($referrer_config['referrers']) ? (array) $referrer_config['referrers'] : '';
$referrer_redirect = isset($referrer_config['redirect']) ? $referrer_config['redirect'] : '';
if ($referrer_enabled && count($referrer_referrers) && $referrer_redirect) {
$rules .= "if (\$http_cookie ~* \"w3tc_referrer=.*(" . implode('|', $referrer_referrers) . ")\") {\n";
$rules .= " rewrite .* " . $referrer_redirect . " last;\n";
$rules .= "}\n";
}
}
}
/**
* Don't accept POSTs
*/
$rules .= "set \$w3tc_rewrite 1;\n";
$rules .= "if (\$request_method = POST) {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
/**
* Query string should be empty
*/
$rules .= "if (\$query_string != \"\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
/**
* Check hostname
*/
if ($this->_config->get_boolean('pgcache.check.domain')) {
$rules .= "if (\$http_host != \"" . w3_get_home_domain() . "\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
}
/**
* Check permalink structure trailing slash
*/
if (substr($permalink_structure, -1) == '/') {
if (!count($accept_uris)) {
$rules .= "if (\$request_uri !~ \\/\$) {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
} else {
$rules .= "set \$w3tc_rewrite2 1;\n";
$rules .= "if (\$request_uri !~ \\/\$) {\n";
$rules .= " set \$w3tc_rewrite2 0;\n";
$rules .= "}\n";
$rules .= "if (\$request_uri ~* \"(" . implode('|', $accept_uris) . ")\") {\n";
$rules .= " set \$w3tc_rewrite2 1;\n";
$rules .= "}\n";
$rules .= "if (\$w3tc_rewrite2 != 1) {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
}
}
/**
* Check for rejected URIs
*/
if (!count($accept_files)) {
$rules .= "if (\$request_uri ~* \"(" . implode('|', $reject_uris) . "\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
} else {
$rules .= "set \$w3tc_rewrite3 1;\n";
$rules .= "if (\$request_uri ~* \"(" . implode('|', $reject_uris) . ")\") {\n";
$rules .= " set \$w3tc_rewrite3 0;\n";
$rules .= "}\n";
$rules .= "if (\$request_uri ~* \"(" . implode('|', array_map('w3_preg_quote', $accept_files)) . ")\") {\n";
$rules .= " set \$w3tc_rewrite3 1;\n";
$rules .= "}\n";
$rules .= "if (\$w3tc_rewrite3 != 1) {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
}
/**
* Check for rejected cookies
*/
$rules .= "if (\$http_cookie ~* \"(" . implode('|', array_map('w3_preg_quote', $reject_cookies)) . ")\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
/**
* Check for rejected user agents
*/
if (count($reject_user_agents)) {
$rules .= "if (\$http_user_agent ~* \"(" . implode('|', array_map('w3_preg_quote', $reject_user_agents)) . ")\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
}
/**
* Network mode rules
*/
if ($is_network) {
/**
* Detect domain
*/
$rules .= "set \$w3tc_domain \"\";\n";
$rules .= "if (\$http_host ~ ^(www\\.)?([a-z0-9\\-\\.]+\\.[a-z]+)\\.?(:[0-9]+)?\$) {\n";
$rules .= " set \$w3tc_domain \$2;\n";
$rules .= "}\n";
$replacement = '/w3tc-$w3tc_domain/';
/**
* If VHOST is off, detect blogname from URI
*/
if (!$is_vhost) {
$blognames = w3_get_blognames();
if (count($blognames)) {
$rules .= "set \$w3tc_blogname \"\";\n";
$rules .= "if (\$request_uri ~ ^" . $base_path . "(" . implode('|', array_map('w3_preg_quote', $blognames)) . ")/) {\n";
$rules .= " set \$w3tc_blogname \$1.;\n";
$rules .= "}\n";
$replacement = '/w3tc-$w3tc_blogname$w3tc_domain/';
}
}
$cache_dir = preg_replace('~/w3tc.*?/~', $replacement, $cache_dir, 1);
}
/**
* Check mobile groups
*/
$rules .= "set \$w3tc_ua \"\";\n";
if ($this->_config->get_boolean('mobile.enabled')) {
$mobile_groups = array_reverse($this->_config->get_array('mobile.rgroups'));
foreach ($mobile_groups as $mobile_group => $mobile_config) {
$mobile_enabled = isset($mobile_config['enabled']) ? (bool) $mobile_config['enabled'] : false;
$mobile_agents = isset($mobile_config['agents']) ? (array) $mobile_config['agents'] : '';
$mobile_redirect = isset($mobile_config['redirect']) ? $mobile_config['redirect'] : '';
if ($mobile_enabled && count($mobile_agents) && !$mobile_redirect) {
$rules .= "if (\$http_user_agent ~* \"(" . implode('|', $mobile_agents) . ")\") {\n";
$rules .= " set \$w3tc_ua _" . $mobile_group . ";\n";
$rules .= "}\n";
}
}
}
/**
* Check referrer groups
*/
$rules .= "set \$w3tc_ref \"\";\n";
if ($this->_config->get_boolean('referrer.enabled')) {
$referrer_groups = array_reverse($this->_config->get_array('referrer.rgroups'));
foreach ($referrer_groups as $referrer_group => $referrer_config) {
$referrer_enabled = isset($referrer_config['enabled']) ? (bool) $referrer_config['enabled'] : false;
$referrer_referrers = isset($referrer_config['referrers']) ? (array) $referrer_config['referrers'] : '';
$referrer_redirect = isset($referrer_config['redirect']) ? $referrer_config['redirect'] : '';
if ($referrer_enabled && count($referrer_referrers) && !$referrer_redirect) {
$rules .= "if (\$http_cookie ~* \"w3tc_referrer=.*(" . implode('|', $referrer_referrers) . ")\") {\n";
$rules .= " set \$w3tc_ref _" . $referrer_group . ";\n";
$rules .= "}\n";
}
}
}
$rules .= "set \$w3tc_ssl \"\";\n";
if ($this->_config->get_boolean('pgcache.cache.ssl')) {
$rules .= "if (\$scheme = https) {\n";
$rules .= " set \$w3tc_ssl _ssl;\n";
$rules .= "}\n";
}
$rules .= "set \$w3tc_enc \"\";\n";
if ($this->_config->get_boolean('browsercache.enabled') && $this->_config->get_boolean('browsercache.html.compression')) {
$rules .= "if (\$http_accept_encoding ~ gzip) {\n";
$rules .= " set \$w3tc_enc _gzip;\n";
$rules .= "}\n";
}
$cache_path = str_replace(w3_get_document_root(), '', $cache_dir);
$rules .= "set \$w3tc_ext \"\";\n";
$rules .= "if (-f \"\$document_root" . $cache_path . "/\$request_uri/_index\$w3tc_ua\$w3tc_ref\$w3tc_ssl.html\$w3tc_enc\") {\n";
$rules .= " set \$w3tc_ext .html;\n";
$rules .= "}\n";
if ($this->_config->get_boolean('pgcache.cache.feed')) {
$rules .= "if (-f \"\$document_root" . $cache_path . "/\$request_uri/_index\$w3tc_ua\$w3tc_ref\$w3tc_ssl.xml\$w3tc_enc\") {\n";
$rules .= " set \$w3tc_ext .xml;\n";
$rules .= "}\n";
}
$rules .= "if (\$w3tc_ext = \"\") {\n";
$rules .= " set \$w3tc_rewrite 0;\n";
$rules .= "}\n";
$rules .= "if (\$w3tc_rewrite = 1) {\n";
$rules .= " rewrite .* \"" . $cache_path . "/\$request_uri/_index\$w3tc_ua\$w3tc_ref\$w3tc_ssl\$w3tc_ext\$w3tc_enc\" last;\n";
$rules .= "}\n";
$rules .= W3TC_MARKER_END_PGCACHE_CORE . "\n";
return $rules;
}