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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\User; |
22 | |
23 | use InvalidArgumentException; |
24 | use MediaWiki\Block\HideUserUtils; |
25 | use MediaWiki\Permissions\Authority; |
26 | use Wikimedia\Rdbms\IConnectionProvider; |
27 | use Wikimedia\Rdbms\IExpression; |
28 | use Wikimedia\Rdbms\LikeValue; |
29 | |
30 | /** |
31 | * Handles searching prefixes of user names |
32 | * |
33 | * @note There are two classes called UserNamePrefixSearch. You should use this class, in |
34 | * namespace MediaWiki\User, which is a service. \UserNamePrefixSearch is a deprecated static wrapper |
35 | * that forwards to the service class. |
36 | * |
37 | * @since 1.36 |
38 | * @ingroup User |
39 | * @author DannyS712 |
40 | */ |
41 | class UserNamePrefixSearch { |
42 | |
43 | public const AUDIENCE_PUBLIC = 'public'; |
44 | |
45 | private IConnectionProvider $dbProvider; |
46 | private UserNameUtils $userNameUtils; |
47 | private HideUserUtils $hideUserUtils; |
48 | |
49 | /** |
50 | * @param IConnectionProvider $dbProvider |
51 | * @param UserNameUtils $userNameUtils |
52 | * @param HideUserUtils $hideUserUtils |
53 | */ |
54 | public function __construct( |
55 | IConnectionProvider $dbProvider, |
56 | UserNameUtils $userNameUtils, |
57 | HideUserUtils $hideUserUtils |
58 | ) { |
59 | $this->dbProvider = $dbProvider; |
60 | $this->userNameUtils = $userNameUtils; |
61 | $this->hideUserUtils = $hideUserUtils; |
62 | } |
63 | |
64 | /** |
65 | * Do a prefix search of user names and return a list of matching user names. |
66 | * |
67 | * @param string|Authority $audience Either AUDIENCE_PUBLIC or a user to |
68 | * show the search for |
69 | * @param string $search |
70 | * @param int $limit |
71 | * @param int $offset How many results to offset from the beginning |
72 | * @return string[] |
73 | * @throws InvalidArgumentException if $audience is invalid |
74 | */ |
75 | public function search( $audience, string $search, int $limit, int $offset = 0 ): array { |
76 | if ( $audience !== self::AUDIENCE_PUBLIC && |
77 | !( $audience instanceof Authority ) |
78 | ) { |
79 | throw new InvalidArgumentException( |
80 | '$audience must be AUDIENCE_PUBLIC or an Authority object' |
81 | ); |
82 | } |
83 | |
84 | // Invalid user names are treated as empty strings |
85 | $prefix = $this->userNameUtils->getCanonical( $search ) ?: ''; |
86 | |
87 | $dbr = $this->dbProvider->getReplicaDatabase(); |
88 | $queryBuilder = $dbr->newSelectQueryBuilder() |
89 | ->select( 'user_name' ) |
90 | ->from( 'user' ) |
91 | ->where( $dbr->expr( 'user_name', IExpression::LIKE, new LikeValue( $prefix, $dbr->anyString() ) ) ) |
92 | ->orderBy( 'user_name' ) |
93 | ->limit( $limit ) |
94 | ->offset( $offset ); |
95 | |
96 | // Filter out hidden user names |
97 | if ( $audience === self::AUDIENCE_PUBLIC || !$audience->isAllowed( 'hideuser' ) ) { |
98 | $queryBuilder->andWhere( $this->hideUserUtils->getExpression( $dbr ) ); |
99 | } |
100 | |
101 | return $queryBuilder->caller( __METHOD__ )->fetchFieldValues(); |
102 | } |
103 | } |