xref: /webtrees/app/Http/RequestHandlers/MediaFileThumbnail.php (revision 5bfc689774bb9a6401271c4ed15a6d50652c991b) 
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2022 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 <https://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees\Http\RequestHandlers;
21
22use Fig\Http\Message\StatusCodeInterface;
23use Fisharebest\Webtrees\Registry;
24use Fisharebest\Webtrees\Validator;
25use Psr\Http\Message\ResponseInterface;
26use Psr\Http\Message\ServerRequestInterface;
27use Psr\Http\Server\RequestHandlerInterface;
28
29use function redirect;
30
31/**
32 * Create a thumbnail of a media file.
33 */
34class MediaFileThumbnail implements RequestHandlerInterface
35{
36    /**
37     * Show an image/thumbnail, with/without a watermark.
38     *
39     * @param ServerRequestInterface $request
40     *
41     * @return ResponseInterface
42     */
43    public function handle(ServerRequestInterface $request): ResponseInterface
44    {
45        $tree = Validator::attributes($request)->tree();
46        $user = Validator::attributes($request)->user();
47
48        $params  = $request->getQueryParams();
49        $xref    = $params['xref'] ?? '';
50        $fact_id = $params['fact_id'] ?? '';
51        $media   = Registry::mediaFactory()->make($xref, $tree);
52
53        if ($media === null) {
54            return Registry::imageFactory()->replacementImageResponse((string) StatusCodeInterface::STATUS_NOT_FOUND);
55        }
56
57        if (!$media->canShow()) {
58            return Registry::imageFactory()->replacementImageResponse((string) StatusCodeInterface::STATUS_FORBIDDEN);
59        }
60
61        foreach ($media->mediaFiles() as $media_file) {
62            if ($media_file->factId() === $fact_id) {
63                if ($media_file->isExternal()) {
64                    return redirect($media_file->filename());
65                }
66
67                // Validate HTTP signature
68                unset($params['route']);
69                $params['tree'] = $media_file->media()->tree()->name();
70
71                if ($media_file->signature($params) !== $params['s']) {
72                    return Registry::imageFactory()->replacementImageResponse((string) StatusCodeInterface::STATUS_FORBIDDEN)
73                        ->withHeader('X-Signature-Exception', 'Signature mismatch');
74                }
75
76                $image_factory = Registry::imageFactory();
77
78                $response = $image_factory->mediaFileThumbnailResponse(
79                    $media_file,
80                    (int) $params['w'],
81                    (int) $params['h'],
82                    $params['fit'],
83                    $image_factory->fileNeedsWatermark($media_file, $user)
84                );
85
86                return $response->withHeader('Cache-Control', 'public,max-age=31536000');
87            }
88        }
89
90        return Registry::imageFactory()->replacementImageResponse((string) StatusCodeInterface::STATUS_NOT_FOUND);
91    }
92}
93