335 lines
11 KiB
PHP
335 lines
11 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\App;
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use Friendica\App;
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use Friendica\BaseModule;
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use Friendica\Core;
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use Friendica\LegacyModule;
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use Friendica\Module\Home;
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use Friendica\Module\HTTPException\MethodNotAllowed;
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use Friendica\Module\HTTPException\PageNotFound;
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use Friendica\Network\HTTPException\MethodNotAllowedException;
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use Friendica\Network\HTTPException\NotFoundException;
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use Friendica\Util\Profiler;
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use Psr\Log\LoggerInterface;
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/**
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* Holds the common context of the current, loaded module
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*/
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class Module
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{
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const DEFAULT = 'home';
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const DEFAULT_CLASS = Home::class;
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/**
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* A list of modules, which are backend methods
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*
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* @var array
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*/
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const BACKEND_MODULES = [
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'_well_known',
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'api',
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'dfrn_notify',
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'feed',
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'fetch',
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'followers',
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'following',
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'hcard',
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'hostxrd',
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'inbox',
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'manifest',
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'nodeinfo',
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'noscrape',
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'objects',
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'outbox',
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'poco',
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'post',
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'pubsub',
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'pubsubhubbub',
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'receive',
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'rsd_xml',
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'salmon',
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'statistics_json',
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'xrd',
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];
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/**
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* @var string The module name
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*/
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private $module;
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/**
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* @var BaseModule The module class
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*/
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private $module_class;
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/**
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* @var array The module parameters
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*/
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private $module_parameters;
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/**
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* @var bool true, if the module is a backend module
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*/
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private $isBackend;
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/**
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* @var bool true, if the loaded addon is private, so we have to print out not allowed
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*/
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private $printNotAllowedAddon;
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/**
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* @return string
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*/
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public function getName()
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{
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return $this->module;
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}
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/**
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* @return string The base class name
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*/
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public function getClassName()
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{
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return $this->module_class;
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}
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/**
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* @return array The module parameters extracted from the route
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*/
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public function getParameters()
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{
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return $this->module_parameters;
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}
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/**
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* @return bool True, if the current module is a backend module
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* @see Module::BACKEND_MODULES for a list
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*/
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public function isBackend()
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{
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return $this->isBackend;
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}
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public function __construct(string $module = self::DEFAULT, string $moduleClass = self::DEFAULT_CLASS, array $moduleParameters = [], bool $isBackend = false, bool $printNotAllowedAddon = false)
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{
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$this->module = $module;
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$this->module_class = $moduleClass;
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$this->module_parameters = $moduleParameters;
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$this->isBackend = $isBackend;
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$this->printNotAllowedAddon = $printNotAllowedAddon;
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}
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/**
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* Determines the current module based on the App arguments and the server variable
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*
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* @param Arguments $args The Friendica arguments
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*
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* @return Module The module with the determined module
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*/
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public function determineModule(Arguments $args)
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{
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if ($args->getArgc() > 0) {
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$module = str_replace('.', '_', $args->get(0));
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$module = str_replace('-', '_', $module);
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} else {
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$module = self::DEFAULT;
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}
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// Compatibility with the Firefox App
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if (($module == "users") && ($args->getCommand() == "users/sign_in")) {
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$module = "login";
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}
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$isBackend = in_array($module, Module::BACKEND_MODULES);;
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return new Module($module, $this->module_class, [], $isBackend, $this->printNotAllowedAddon);
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}
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/**
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* Determine the class of the current module
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*
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* @param Arguments $args The Friendica execution arguments
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* @param Router $router The Friendica routing instance
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* @param Core\Config\IConfig $config The Friendica Configuration
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*
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* @return Module The determined module of this call
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*
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* @throws \Exception
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*/
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public function determineClass(Arguments $args, Router $router, Core\Config\IConfig $config)
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{
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$printNotAllowedAddon = false;
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$module_class = null;
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$module_parameters = [];
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/**
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* ROUTING
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*
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* From the request URL, routing consists of obtaining the name of a BaseModule-extending class of which the
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* post() and/or content() static methods can be respectively called to produce a data change or an output.
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**/
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try {
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$module_class = $router->getModuleClass($args->getCommand());
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$module_parameters = $router->getModuleParameters();
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} catch (MethodNotAllowedException $e) {
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$module_class = MethodNotAllowed::class;
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} catch (NotFoundException $e) {
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// Then we try addon-provided modules that we wrap in the LegacyModule class
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if (Core\Addon::isEnabled($this->module) && file_exists("addon/{$this->module}/{$this->module}.php")) {
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//Check if module is an app and if public access to apps is allowed or not
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$privateapps = $config->get('config', 'private_addons', false);
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if ((!local_user()) && Core\Hook::isAddonApp($this->module) && $privateapps) {
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$printNotAllowedAddon = true;
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} else {
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include_once "addon/{$this->module}/{$this->module}.php";
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if (function_exists($this->module . '_module')) {
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LegacyModule::setModuleFile("addon/{$this->module}/{$this->module}.php");
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$module_class = LegacyModule::class;
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}
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}
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}
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/* Finally, we look for a 'standard' program module in the 'mod' directory
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* We emulate a Module class through the LegacyModule class
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*/
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if (!$module_class && file_exists("mod/{$this->module}.php")) {
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LegacyModule::setModuleFile("mod/{$this->module}.php");
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$module_class = LegacyModule::class;
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}
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$module_class = $module_class ?: PageNotFound::class;
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}
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return new Module($this->module, $module_class, $module_parameters, $this->isBackend, $printNotAllowedAddon);
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}
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/**
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* Run the determined module class and calls all hooks applied to
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*
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* @param \Friendica\Core\L10n $l10n The L10n instance
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* @param App\BaseURL $baseUrl The Friendica Base URL
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* @param LoggerInterface $logger The Friendica logger
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* @param array $server The $_SERVER variable
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* @param array $post The $_POST variables
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*
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public function run(Core\L10n $l10n, App\BaseURL $baseUrl, LoggerInterface $logger, Profiler $profiler, array $server, array $post)
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{
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if ($this->printNotAllowedAddon) {
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notice($l10n->t("You must be logged in to use addons. "));
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}
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/* The URL provided does not resolve to a valid module.
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*
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* On Dreamhost sites, quite often things go wrong for no apparent reason and they send us to '/internal_error.html'.
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* We don't like doing this, but as it occasionally accounts for 10-20% or more of all site traffic -
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* we are going to trap this and redirect back to the requested page. As long as you don't have a critical error on your page
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* this will often succeed and eventually do the right thing.
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*
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* Otherwise we are going to emit a 404 not found.
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*/
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if ($this->module_class === PageNotFound::class) {
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$queryString = $server['QUERY_STRING'];
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// Stupid browser tried to pre-fetch our Javascript img template. Don't log the event or return anything - just quietly exit.
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if (!empty($queryString) && preg_match('/{[0-9]}/', $queryString) !== 0) {
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exit();
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}
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if (!empty($queryString) && ($queryString === 'q=internal_error.html') && isset($dreamhost_error_hack)) {
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$logger->info('index.php: dreamhost_error_hack invoked.', ['Original URI' => $server['REQUEST_URI']]);
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$baseUrl->redirect($server['REQUEST_URI']);
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}
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$logger->debug('index.php: page not found.', ['request_uri' => $server['REQUEST_URI'], 'address' => $server['REMOTE_ADDR'], 'query' => $server['QUERY_STRING']]);
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}
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// @see https://github.com/tootsuite/mastodon/blob/c3aef491d66aec743a3a53e934a494f653745b61/config/initializers/cors.rb
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if (substr($_REQUEST['pagename'] ?? '', 0, 12) == '.well-known/') {
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Headers: *');
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header('Access-Control-Allow-Methods: ' . Router::GET);
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header('Access-Control-Allow-Credentials: false');
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} elseif (substr($_REQUEST['pagename'] ?? '', 0, 8) == 'profile/') {
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Headers: *');
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header('Access-Control-Allow-Methods: ' . Router::GET);
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header('Access-Control-Allow-Credentials: false');
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} elseif (substr($_REQUEST['pagename'] ?? '', 0, 4) == 'api/') {
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Headers: *');
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header('Access-Control-Allow-Methods: ' . implode(',', Router::ALLOWED_METHODS));
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header('Access-Control-Allow-Credentials: false');
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header('Access-Control-Expose-Headers: Link');
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} elseif (substr($_REQUEST['pagename'] ?? '', 0, 11) == 'oauth/token') {
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Headers: *');
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header('Access-Control-Allow-Methods: ' . Router::POST);
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header('Access-Control-Allow-Credentials: false');
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}
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// @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/OPTIONS
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// @todo Check allowed methods per requested path
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if ($server['REQUEST_METHOD'] === Router::OPTIONS) {
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header('HTTP/1.1 204 No Content');
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header('Allow: ' . implode(',', Router::ALLOWED_METHODS));
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exit();
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}
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$placeholder = '';
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$profiler->set(microtime(true), 'ready');
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$timestamp = microtime(true);
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Core\Hook::callAll($this->module . '_mod_init', $placeholder);
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call_user_func([$this->module_class, 'init'], $this->module_parameters);
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$profiler->set(microtime(true) - $timestamp, 'init');
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if ($server['REQUEST_METHOD'] === Router::DELETE) {
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call_user_func([$this->module_class, 'delete'], $this->module_parameters);
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}
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if ($server['REQUEST_METHOD'] === Router::PATCH) {
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call_user_func([$this->module_class, 'patch'], $this->module_parameters);
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}
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if ($server['REQUEST_METHOD'] === Router::POST) {
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Core\Hook::callAll($this->module . '_mod_post', $post);
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call_user_func([$this->module_class, 'post'], $this->module_parameters);
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}
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if ($server['REQUEST_METHOD'] === Router::PUT) {
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call_user_func([$this->module_class, 'put'], $this->module_parameters);
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}
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Core\Hook::callAll($this->module . '_mod_afterpost', $placeholder);
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call_user_func([$this->module_class, 'afterpost'], $this->module_parameters);
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// "rawContent" is especially meant for technical endpoints.
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// This endpoint doesn't need any theme initialization or other comparable stuff.
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call_user_func([$this->module_class, 'rawContent'], $this->module_parameters);
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}
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}
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