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1 | <?php |
2 | |
3 | /** |
4 | * Secret calculator |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2024. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package Crypt |
25 | * @author Demian Katz <demian.katz@villanova.edu> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org/wiki/development Wiki |
28 | */ |
29 | |
30 | namespace VuFind\Crypt; |
31 | |
32 | use VuFind\Db\Entity\SearchEntityInterface; |
33 | |
34 | /** |
35 | * Secret calculator |
36 | * |
37 | * @category VuFind |
38 | * @package Crypt |
39 | * @author Demian Katz <demian.katz@villanova.edu> |
40 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
41 | * @link https://vufind.org/wiki/development Wiki |
42 | */ |
43 | class SecretCalculator |
44 | { |
45 | /** |
46 | * Constructor |
47 | * |
48 | * @param HMAC $hmac HMAC generator |
49 | */ |
50 | public function __construct(protected HMAC $hmac) |
51 | { |
52 | } |
53 | |
54 | /** |
55 | * Utility function for generating a token for unsubscribing a saved search. |
56 | * |
57 | * @param SearchEntityInterface $search Object representing saved search |
58 | * |
59 | * @return string token |
60 | */ |
61 | public function getSearchUnsubscribeSecret(SearchEntityInterface $search): string |
62 | { |
63 | $user = $search->getUser(); |
64 | if (!$user) { |
65 | throw new \Exception("Unexpected missing user in search {$search->getId()}"); |
66 | } |
67 | $data = [ |
68 | 'id' => $search->getId(), |
69 | 'user_id' => $user->getId(), |
70 | 'created' => $user->getCreated()->format('Y-m-d H:i:s'), |
71 | ]; |
72 | return $this->hmac->generate(array_keys($data), $data); |
73 | } |
74 | } |