188 lines
4.6 KiB
PHP
188 lines
4.6 KiB
PHP
|
<?php
|
||
|
/**
|
||
|
* @file src/Core/Hook.php
|
||
|
*/
|
||
|
namespace Friendica\Core;
|
||
|
|
||
|
use Friendica\App;
|
||
|
use Friendica\BaseObject;
|
||
|
use Friendica\Database\DBA;
|
||
|
|
||
|
/**
|
||
|
* Some functions to handle hooks
|
||
|
*/
|
||
|
class Hook extends BaseObject
|
||
|
{
|
||
|
/**
|
||
|
* Array of registered hooks
|
||
|
*
|
||
|
* Format:
|
||
|
* [
|
||
|
* ["<hook name>"] => [
|
||
|
* 0 => "<hook file>",
|
||
|
* 1 => "<hook function name>"
|
||
|
* ],
|
||
|
* ...
|
||
|
* ]
|
||
|
*
|
||
|
* @var array
|
||
|
*/
|
||
|
private static $hooks = [];
|
||
|
|
||
|
/**
|
||
|
* Load hooks
|
||
|
*/
|
||
|
public static function loadHooks()
|
||
|
{
|
||
|
self::$hooks = [];
|
||
|
$stmt = DBA::select('hook', ['hook', 'file', 'function'], [], ['order' => ['priority' => 'desc', 'file']]);
|
||
|
|
||
|
while ($hook = DBA::fetch($stmt)) {
|
||
|
if (!array_key_exists($hook['hook'], self::$hooks)) {
|
||
|
self::$hooks[$hook['hook']] = [];
|
||
|
}
|
||
|
self::$hooks[$hook['hook']][] = [$hook['file'], $hook['function']];
|
||
|
}
|
||
|
DBA::close($stmt);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Registers a hook.
|
||
|
*
|
||
|
* @param string $hook the name of the hook
|
||
|
* @param string $file the name of the file that hooks into
|
||
|
* @param string $function the name of the function that the hook will call
|
||
|
* @param int $priority A priority (defaults to 0)
|
||
|
* @return mixed|bool
|
||
|
*/
|
||
|
public static function register($hook, $file, $function, $priority = 0)
|
||
|
{
|
||
|
$file = str_replace(self::getApp()->getBasePath() . DIRECTORY_SEPARATOR, '', $file);
|
||
|
|
||
|
$condition = ['hook' => $hook, 'file' => $file, 'function' => $function];
|
||
|
if (DBA::exists('hook', $condition)) {
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
$result = DBA::insert('hook', ['hook' => $hook, 'file' => $file, 'function' => $function, 'priority' => $priority]);
|
||
|
|
||
|
return $result;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Unregisters a hook.
|
||
|
*
|
||
|
* @param string $hook the name of the hook
|
||
|
* @param string $file the name of the file that hooks into
|
||
|
* @param string $function the name of the function that the hook called
|
||
|
* @return boolean
|
||
|
*/
|
||
|
public static function unregister($hook, $file, $function)
|
||
|
{
|
||
|
$relative_file = str_replace(self::getApp()->getBasePath() . DIRECTORY_SEPARATOR, '', $file);
|
||
|
|
||
|
// This here is only needed for fixing a problem that existed on the develop branch
|
||
|
$condition = ['hook' => $hook, 'file' => $file, 'function' => $function];
|
||
|
DBA::delete('hook', $condition);
|
||
|
|
||
|
$condition = ['hook' => $hook, 'file' => $relative_file, 'function' => $function];
|
||
|
$result = DBA::delete('hook', $condition);
|
||
|
return $result;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Returns the list of callbacks for a single hook
|
||
|
*
|
||
|
* @param string $name
|
||
|
* @return array
|
||
|
*/
|
||
|
public static function getByName($name)
|
||
|
{
|
||
|
$return = [];
|
||
|
|
||
|
if (isset(self::$hooks[$name])) {
|
||
|
$return = self::$hooks[$name];
|
||
|
}
|
||
|
|
||
|
return $return;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Forks a hook.
|
||
|
*
|
||
|
* Use this function when you want to fork a hook via the worker.
|
||
|
*
|
||
|
* @param string $name of the hook to call
|
||
|
* @param string|array $data to transmit to the callback handler
|
||
|
*/
|
||
|
public static function fork($priority, $name, $data = null)
|
||
|
{
|
||
|
if (array_key_exists($name, self::$hooks)) {
|
||
|
foreach (self::$hooks[$name] as $hook) {
|
||
|
Worker::add($priority, 'ForkHook', $name, $hook, $data);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Calls a hook.
|
||
|
*
|
||
|
* Use this function when you want to be able to allow a hook to manipulate
|
||
|
* the provided data.
|
||
|
*
|
||
|
* @param string $name of the hook to call
|
||
|
* @param string|array &$data to transmit to the callback handler
|
||
|
*/
|
||
|
public static function callAll($name, &$data = null)
|
||
|
{
|
||
|
if (array_key_exists($name, self::$hooks)) {
|
||
|
foreach (self::$hooks[$name] as $hook) {
|
||
|
self::callSingle(self::getApp(), $name, $hook, $data);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Calls a single hook.
|
||
|
*
|
||
|
* @param App $a
|
||
|
* @param string $name of the hook to call
|
||
|
* @param array $hook Hook data
|
||
|
* @param string|array &$data to transmit to the callback handler
|
||
|
*/
|
||
|
public static function callSingle(App $a, $name, $hook, &$data = null)
|
||
|
{
|
||
|
// Don't run a theme's hook if the user isn't using the theme
|
||
|
if (strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/' . $a->getCurrentTheme()) === false) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
@include_once($hook[0]);
|
||
|
if (function_exists($hook[1])) {
|
||
|
$func = $hook[1];
|
||
|
$func($a, $data);
|
||
|
} else {
|
||
|
// remove orphan hooks
|
||
|
$condition = ['hook' => $name, 'file' => $hook[0], 'function' => $hook[1]];
|
||
|
DBA::delete('hook', $condition, ['cascade' => false]);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* check if an app_menu hook exist for addon $name.
|
||
|
* Return true if the addon is an app
|
||
|
*/
|
||
|
public static function isAddonApp($name)
|
||
|
{
|
||
|
if (array_key_exists('app_menu', self::$hooks)) {
|
||
|
foreach (self::$hooks['app_menu'] as $hook) {
|
||
|
if ($hook[0] == 'addon/' . $name . '/' . $name . '.php') {
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
}
|