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1 | <?php |
2 | |
3 | namespace MediaWiki\Extension\Notifications; |
4 | |
5 | use BadMethodCallException; |
6 | use MediaWiki\MediaWikiServices; |
7 | use MediaWiki\Preferences\MultiUsernameFilter; |
8 | use MediaWiki\User\User; |
9 | use WANObjectCache; |
10 | |
11 | /** |
12 | * Utilizes ContainmentList interface to provide a fluent interface to whitelist/blacklist |
13 | * from multiple sources like global variables, wiki pages, etc. |
14 | * |
15 | * Initialize: |
16 | * $cache = ObjectCache::getLocalClusterInstance(); |
17 | * $set = new ContainmentSet; |
18 | * $set->addArray( $wgSomeGlobalParameter ); |
19 | * $set->addOnWiki( NS_USER, 'Foo/bar-baz', $cache, 'some_user_specific_cache_key' ); |
20 | * |
21 | * Usage: |
22 | * if ( $set->contains( 'SomeUser' ) ) { |
23 | * ... |
24 | * } |
25 | */ |
26 | class ContainmentSet { |
27 | /** |
28 | * @var ContainmentList[] |
29 | */ |
30 | protected $lists = []; |
31 | |
32 | /** |
33 | * @var User |
34 | */ |
35 | protected $recipient; |
36 | |
37 | /** |
38 | * @param User $recipient |
39 | */ |
40 | public function __construct( User $recipient ) { |
41 | $this->recipient = $recipient; |
42 | } |
43 | |
44 | /** |
45 | * Add an ContainmentList to the set of lists checked by self::contains() |
46 | * |
47 | * @param ContainmentList $list |
48 | */ |
49 | public function add( ContainmentList $list ) { |
50 | $this->lists[] = $list; |
51 | } |
52 | |
53 | /** |
54 | * Add a php array to the set of lists checked by self::contains() |
55 | * |
56 | * @param array $list |
57 | */ |
58 | public function addArray( array $list ) { |
59 | $this->add( new ArrayList( $list ) ); |
60 | } |
61 | |
62 | /** |
63 | * Add a list from a user preference to the set of lists checked by self::contains(). |
64 | * |
65 | * @param string $preferenceName |
66 | */ |
67 | public function addFromUserOption( string $preferenceName ) { |
68 | $userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup(); |
69 | $preference = $userOptionsLookup->getOption( $this->recipient, $preferenceName, [] ); |
70 | if ( $preference ) { |
71 | $ids = MultiUsernameFilter::splitIds( $preference ); |
72 | $names = MediaWikiServices::getInstance() |
73 | ->getCentralIdLookup() |
74 | ->namesFromCentralIds( $ids, $this->recipient ); |
75 | $this->addArray( $names ); |
76 | } |
77 | } |
78 | |
79 | /** |
80 | * Add a list of title IDs from a user preference to the set of lists |
81 | * checked by self::contains(). |
82 | * |
83 | * @param string $preferenceName |
84 | */ |
85 | public function addTitleIDsFromUserOption( string $preferenceName ): void { |
86 | $userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup(); |
87 | $preference = $userOptionsLookup->getOption( $this->recipient, $preferenceName, [] ); |
88 | if ( !is_string( $preference ) ) { |
89 | // We expect the preference data to be saved as a string via the |
90 | // preferences form; if the user modified their data so it's no |
91 | // longer a string, ignore it. |
92 | return; |
93 | } |
94 | $titleIDs = preg_split( '/\n/', $preference, -1, PREG_SPLIT_NO_EMPTY ); |
95 | $this->addArray( $titleIDs ); |
96 | } |
97 | |
98 | /** |
99 | * Add a list from a wiki page to the set of lists checked by self::contains(). Data |
100 | * from wiki pages is cached via the BagOStuff. Caching is disabled when passing a null |
101 | * $cache object. |
102 | * |
103 | * @param int $namespace An NS_* constant representing the mediawiki namespace of the page containing the list. |
104 | * @param string $title The title of the page containing the list. |
105 | * @param WANObjectCache|null $cache An object to cache the page with or null for no cache. |
106 | * @param string $cacheKeyPrefix A prefix to be combined with the pages latest revision id and used as a cache key. |
107 | */ |
108 | public function addOnWiki( |
109 | $namespace, $title, WANObjectCache $cache = null, $cacheKeyPrefix = '' |
110 | ) { |
111 | $list = new OnWikiList( $namespace, $title ); |
112 | if ( $cache ) { |
113 | if ( $cacheKeyPrefix === '' ) { |
114 | throw new BadMethodCallException( 'Cache requires providing a cache key prefix.' ); |
115 | } |
116 | $list = new CachedList( $cache, $cacheKeyPrefix, $list ); |
117 | } |
118 | $this->add( $list ); |
119 | } |
120 | |
121 | /** |
122 | * Test the wrapped lists for existence of $value |
123 | * |
124 | * @param mixed $value The value to look for |
125 | * @return bool True when the set contains the provided value |
126 | */ |
127 | public function contains( $value ) { |
128 | foreach ( $this->lists as $list ) { |
129 | // Use strict comparison to prevent the number 0 from matching all strings (T177825) |
130 | if ( in_array( $value, $list->getValues(), true ) ) { |
131 | return true; |
132 | } |
133 | } |
134 | |
135 | return false; |
136 | } |
137 | } |