/**
* Returns current blog ID
*
* @return integer
*/
public static function blog_id()
{
global $w3_current_blog_id;
if (!is_null($w3_current_blog_id)) {
return $w3_current_blog_id;
}
if (!Util_Environment::is_wpmu() || is_network_admin()) {
$w3_current_blog_id = 0;
return $w3_current_blog_id;
}
$blog_data = Util_WpmuBlogmap::get_current_blog_data();
if (!is_null($blog_data)) {
$w3_current_blog_id = substr($blog_data, 1);
} else {
$w3_current_blog_id = 0;
}
return $w3_current_blog_id;
}
/**
* 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']) && $_GET['repeat'] == 'w3tc' || Util_Environment::is_preview_mode()) {
header('X-Robots-Tag: noindex');
}
}
/**
* Registers new blog url in url=>blog mapfile
*/
public static function register_new_item($blog_home_url, $config)
{
if (!isset($GLOBALS['current_blog'])) {
return false;
}
$filename = Util_WpmuBlogmap::blogmap_filename_by_home_url($blog_home_url);
if (!@file_exists($filename)) {
$blog_ids = array();
} else {
$data = @file_get_contents($filename);
$blog_ids = @json_decode($data, true);
if (!is_array($blog_ids)) {
$blog_ids = array();
}
}
if (isset($blog_ids[$blog_home_url])) {
return false;
}
$data = $config->get_boolean('common.force_master') ? 'm' : 'c';
$blog_home_url = preg_replace('/[^a-zA-Z0-9\\+\\.%~!()\\/\\-\\_]/', '', $blog_home_url);
$blog_ids[$blog_home_url] = $data . $GLOBALS['current_blog']->blog_id;
$data = json_encode($blog_ids);
try {
Util_File::file_put_contents_atomic($filename, $data);
} catch (\Exception $ex) {
return false;
}
unset(self::$content_by_filename[$filename]);
return true;
}
