Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

178 lines
4.7 KiB

<?php
namespace Friendica\App;
use FastRoute\DataGenerator\GroupCountBased;
use FastRoute\Dispatcher;
use FastRoute\RouteCollector;
use FastRoute\RouteParser\Std;
use Friendica\Core\Hook;
use Friendica\Network\HTTPException\InternalServerErrorException;
/**
* Wrapper for FastRoute\Router
*
* This wrapper only makes use of a subset of the router features, mainly parses a route rule to return the relevant
* module class.
*
* Actual routes are defined in App->collectRoutes.
*
* @package Friendica\App
*/
class Router
{
const POST = 'POST';
const GET = 'GET';
const ALLOWED_METHODS = [
self::POST,
self::GET,
];
/** @var RouteCollector */
protected $routeCollector;
/**
* @var string The HTTP method
*/
private $httpMethod;
/**
* @param array $server The $_SERVER variable
* @param RouteCollector|null $routeCollector Optional the loaded Route collector
*/
public function __construct(array $server, RouteCollector $routeCollector = null)
{
$httpMethod = $server['REQUEST_METHOD'] ?? self::GET;
$this->httpMethod = in_array($httpMethod, self::ALLOWED_METHODS) ? $httpMethod : self::GET;
$this->routeCollector = isset($routeCollector) ?
$routeCollector :
new RouteCollector(new Std(), new GroupCountBased());
}
/**
* @param array $routes The routes to add to the Router
*
* @return self The router instance with the loaded routes
*
* @throws InternalServerErrorException In case of invalid configs
*/
public function addRoutes(array $routes)
{
$routeCollector = (isset($this->routeCollector) ?
$this->routeCollector :
new RouteCollector(new Std(), new GroupCountBased()));
foreach ($routes as $route => $config) {
if ($this->isGroup($config)) {
$this->addGroup($route, $config, $routeCollector);
} elseif ($this->isRoute($config)) {
$routeCollector->addRoute($config[1], $route, $config[0]);
} else {
throw new InternalServerErrorException("Wrong route config for route '" . print_r($route, true) . "'");
}
}
$this->routeCollector = $routeCollector;
return $this;
}
/**
* Adds a group of routes to a given group
*
* @param string $groupRoute The route of the group
* @param array $routes The routes of the group
* @param RouteCollector $routeCollector The route collector to add this group
*/
private function addGroup(string $groupRoute, array $routes, RouteCollector $routeCollector)
{
$routeCollector->addGroup($groupRoute, function (RouteCollector $routeCollector) use ($routes) {
foreach ($routes as $route => $config) {
if ($this->isGroup($config)) {
$this->addGroup($route, $config, $routeCollector);
} elseif ($this->isRoute($config)) {
$routeCollector->addRoute($config[1], $route, $config[0]);
}else {
throw new InternalServerErrorException("Wrong route config for route '" . print_r($route, true) . "'");
}
}
});
}
/**
* Returns true in case the config is a group config
*
* @param array $config
*
* @return bool
*/
private function isGroup(array $config)
{
return
is_array($config) &&
is_string(array_keys($config)[0]) &&
// This entry should NOT be a BaseModule
(substr(array_keys($config)[0], 0, strlen('Friendica\Module')) !== 'Friendica\Module') &&
// The second argument is an array (another routes)
is_array(array_values($config)[0]);
}
/**
* Returns true in case the config is a route config
*
* @param array $config
*
* @return bool
*/
private function isRoute(array $config)
{
return
// The config array should at least have one entry
!empty($config[0]) &&
// This entry should be a BaseModule
(substr($config[0], 0, strlen('Friendica\Module')) === 'Friendica\Module') &&
// Either there is no other argument
(empty($config[1]) ||
// Or the second argument is an array (HTTP-Methods)
is_array($config[1]));
}
/**
* The current route collector
*
* @return RouteCollector|null
*/
public function getRouteCollector()
{
return $this->routeCollector;
}
/**
* Returns the relevant module class name for the given page URI or NULL if no route rule matched.
*
* @param string $cmd The path component of the request URL without the query string
*
* @return string|null A Friendica\BaseModule-extending class name if a route rule matched
*/
public function getModuleClass($cmd)
{
// Add routes from addons
Hook::callAll('route_collection', $this->routeCollector);
$cmd = '/' . ltrim($cmd, '/');
$dispatcher = new \FastRoute\Dispatcher\GroupCountBased($this->routeCollector->getData());
$moduleClass = null;
$routeInfo = $dispatcher->dispatch($this->httpMethod, $cmd);
if ($routeInfo[0] === Dispatcher::FOUND) {
$moduleClass = $routeInfo[1];
}
return $moduleClass;
}
}