]> git.mxchange.org Git - friendica.git/blob - src/Core/Storage/Type/ExternalResource.php
Catch all errors thrown by "fetchRaw"
[friendica.git] / src / Core / Storage / Type / ExternalResource.php
1 <?php
2 /**
3  * @copyright Copyright (C) 2010-2023, the Friendica project
4  *
5  * @license GNU AGPL version 3 or any later version
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU Affero General Public License as
9  * published by the Free Software Foundation, either version 3 of the
10  * License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU Affero General Public License for more details.
16  *
17  * You should have received a copy of the GNU Affero General Public License
18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
19  *
20  */
21
22 namespace Friendica\Core\Storage\Type;
23
24 use Exception;
25 use Friendica\Core\Logger;
26 use Friendica\Core\Storage\Exception\ReferenceStorageException;
27 use Friendica\Core\Storage\Capability\ICanReadFromStorage;
28 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
29 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
30 use Friendica\Util\HTTPSignature;
31
32 /**
33  * External resource storage class
34  *
35  * This class is used to load external resources, like images.
36  * Is not intended to be selectable by admins as default storage class.
37  */
38 class ExternalResource implements ICanReadFromStorage
39 {
40         const NAME = 'ExternalResource';
41
42         /**
43          * @inheritDoc
44          */
45         public function get(string $reference): string
46         {
47                 $data = json_decode($reference);
48                 if (empty($data->url)) {
49                         throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot retrieve URL', $reference));
50                 }
51
52                 $parts = parse_url($data->url);
53                 if (empty($parts['scheme']) || empty($parts['host'])) {
54                         throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot extract scheme and host', $reference));
55                 }
56
57                 try {
58                         $fetchResult = HTTPSignature::fetchRaw($data->url, $data->uid, [HttpClientOptions::ACCEPT_CONTENT => [HttpClientAccept::IMAGE]]);
59                 } catch (Exception $exception) {
60                         Logger::notice('URL is invalid', ['url' => $data->url, 'error' => $exception]);
61                         throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $exception->getCode(), $exception);
62                 }
63                 if (!empty($fetchResult) && $fetchResult->isSuccess()) {
64                         Logger::debug('Got picture', ['Content-Type' => $fetchResult->getHeader('Content-Type'), 'uid' => $data->uid, 'url' => $data->url]);
65                         return $fetchResult->getBody();
66                 } else {
67                         if (empty($fetchResult)) {
68                                 throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference));
69                         } else {
70                                 throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $fetchResult->getReturnCode(), new Exception($fetchResult->getBody()));
71                         }
72                 }
73         }
74
75         /**
76          * @inheritDoc
77          */
78         public function __toString(): string
79         {
80                 return self::NAME;
81         }
82
83         /**
84          * @inheritDoc
85          */
86         public static function getName(): string
87         {
88                 return self::NAME;
89         }
90 }