xref: /webtrees/app/Http/RequestHandlers/ModuleAction.php (revision 9b152ff9230017d2c03aa1bf603a98b18250446d) 
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2019 webtrees development team
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees\Http\RequestHandlers;
21
22use Fisharebest\Webtrees\Auth;
23use Fisharebest\Webtrees\Contracts\UserInterface;
24use Fisharebest\Webtrees\Exceptions\HttpAccessDeniedException;
25use Fisharebest\Webtrees\Exceptions\HttpNotFoundException;
26use Fisharebest\Webtrees\Services\ModuleService;
27use Psr\Http\Message\ResponseInterface;
28use Psr\Http\Message\ServerRequestInterface;
29use Psr\Http\Server\RequestHandlerInterface;
30
31use function call_user_func;
32use function method_exists;
33use function strpos;
34use function strtolower;
35
36/**
37 * Controller for module actions.
38 */
39class ModuleAction implements RequestHandlerInterface
40{
41    /** @var ModuleService */
42    private $module_service;
43
44    /**
45     * ModuleController constructor.
46     *
47     * @param ModuleService $module_service
48     */
49    public function __construct(ModuleService $module_service)
50    {
51        $this->module_service = $module_service;
52    }
53
54    /**
55     * Perform an HTTP action for one of the modules.
56     *
57     * @param ServerRequestInterface $request
58     *
59     * @return ResponseInterface
60     */
61    public function handle(ServerRequestInterface $request): ResponseInterface
62    {
63        $module_name = $request->getAttribute('module');
64        $action      = $request->getAttribute('action');
65        $user        = $request->getAttribute('user');
66        assert($user instanceof UserInterface);
67
68        // Check that the module is enabled.
69        // The module itself will need to check any tree-level access,
70        // which may be different for each component (tab, menu, etc.) of the module.
71        $module = $this->module_service->findByName($module_name);
72
73        if ($module === null) {
74            throw new HttpNotFoundException('Module ' . $module_name . ' does not exist');
75        }
76
77        // We'll call a function such as Module::getFooBarAction()
78        $verb   = strtolower($request->getMethod());
79        $method = $verb . $action . 'Action';
80
81        // Actions with "Admin" in the name are for administrators only.
82        if (strpos($action, 'Admin') !== false && !Auth::isAdmin($user)) {
83            throw new HttpAccessDeniedException('Admin only action');
84        }
85
86        if (!method_exists($module, $method)) {
87            throw new HttpNotFoundException('Method ' . $method . '() not found in ' . $module_name);
88        }
89
90        return call_user_func([$module, $method], $request);
91    }
92}
93