Viewing file:  DbCacheAdminEnvironment.php (4.42 KB) -rw-rw-rw-
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<?php
/**
* W3 PgCache plugin - administrative interface
*/
if (!defined('W3TC')) {
die();
}
/**
* Class W3_DbCacheAdminEnvironment
*/
class W3_DbCacheAdminEnvironment {
/*
* Fixes environment in each wp-admin request
* @param W3_Config $config
* @param bool $force_all_checks
*
* @throws SelfTestExceptions
**/
public function fix_on_wpadmin_request($config, $force_all_checks) {
$exs = new SelfTestExceptions();
try {
if ($config->get_boolean('dbcache.enabled'))
$this->create_addin();
else
$this->delete_addin();
} catch (FilesystemOperationException $ex) {
$exs->push($ex);
}
if (count($exs->exceptions()) > 0)
throw $exs;
}
/**
* Fixes environment once event occurs
* @throws SelfTestExceptions
**/
public function fix_on_event($config, $event, $old_config = null) {
if ($config->get_boolean('dbcache.enabled') &&
$config->get_string('dbcache.engine') == 'file') {
if (!wp_next_scheduled('w3_dbcache_cleanup')) {
wp_schedule_event(time(),
'w3_dbcache_cleanup', 'w3_dbcache_cleanup');
}
} else {
$this->unschedule();
}
}
/**
* Fixes environment after plugin deactivation
* @throws SelfTestExceptions
* @return array
*/
public function fix_after_deactivation() {
$exs = new SelfTestExceptions();
try {
$this->delete_addin();
} catch (FilesystemOperationException $ex) {
$exs->push($ex);
}
$this->unschedule();
if (count($exs->exceptions()) > 0)
throw $exs;
}
/**
* Returns required rules for module
* @var W3_Config $config
* @return array
*/
function get_required_rules($config) {
return null;
}
/**
* scheduling stuff
**/
private function unschedule() {
if (wp_next_scheduled('w3_dbcache_cleanup')) {
wp_clear_scheduled_hook('w3_dbcache_cleanup');
}
}
/**
* Creates add-in
* @throws FilesystemOperationException
*/
private function create_addin() {
$src = W3TC_INSTALL_FILE_DB;
$dst = W3TC_ADDIN_FILE_DB;
if ($this->db_installed()) {
if ($this->is_dbcache_add_in()) {
$script_data = @file_get_contents($dst);
if ($script_data == @file_get_contents($src))
return;
} elseif (!$this->db_check_old_add_in()) {
w3_require_once(W3TC_INC_FUNCTIONS_DIR . '/other.php');
w3_require_once(W3TC_INC_FUNCTIONS_DIR . '/ui.php');
if (isset($_GET['page']))
$url = 'admin.php?page=' . $_GET['page'] . '&';
else
$url = basename(w3_remove_query($_SERVER['REQUEST_URI'])) . '?page=w3tc_dashboard&';
$remove_url = w3_admin_url($url . 'w3tc_default_remove_add_in=dbcache');
throw new FilesystemOperationException(
sprintf(__('The Database add-in file db.php is not a W3 Total Cache drop-in.
Remove it or disable Database Caching. %s', 'w3-total-cache'),
w3tc_button_link(__('Remove it for me', 'w3-total-cache'), wp_nonce_url($remove_url,'w3tc'))));
}
}
w3_wp_copy_file($src, $dst);
}
/**
* Deletes add-in
* @throws FilesystemOperationException
*/
private function delete_addin() {
if ($this->is_dbcache_add_in())
w3_wp_delete_file(W3TC_ADDIN_FILE_DB);
}
/**
* Returns true if db.php is installed
*
* @return boolean
*/
public function db_installed() {
return file_exists(W3TC_ADDIN_FILE_DB);
}
/**
* Returns true if db.php is old version.
* @return boolean
*/
public function db_check_old_add_in() {
return (($script_data = @file_get_contents(W3TC_ADDIN_FILE_DB))
&& strstr($script_data, '& w3_instance') !== false);
}
/**
* Checks if db.php is W3TC drop in
*
* @return boolean
*/
public function is_dbcache_add_in() {
return (($script_data = @file_get_contents(W3TC_ADDIN_FILE_DB))
&& strstr($script_data, 'W3 Total Cache Database module') !== false);
}
}
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