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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace ContentTranslation; |
| 5 | |
| 6 | use MediaWiki\Extension\AbuseFilter\Consequences\ConsequencesLookup; |
| 7 | use MediaWiki\Extension\AbuseFilter\FilterLookup; |
| 8 | use MediaWiki\Extension\AbuseFilter\FilterRunnerFactory; |
| 9 | use MediaWiki\Extension\AbuseFilter\GlobalNameUtils; |
| 10 | use MediaWiki\Extension\AbuseFilter\VariableGenerator\VariableGeneratorFactory; |
| 11 | use MediaWiki\Extension\AbuseFilter\Variables\VariableHolder; |
| 12 | use MediaWiki\Page\WikiPageFactory; |
| 13 | use MediaWiki\Title\Title; |
| 14 | use MediaWiki\User\User; |
| 15 | |
| 16 | /** |
| 17 | * Utility class for checking AbuseFilter rules before publishing. |
| 18 | * |
| 19 | * The results from these methods return an array, where the keys are |
| 20 | * the public names of the rules, and values are arrays consisting of |
| 21 | * different actions the rules would cause. Those can be tag, warn, |
| 22 | * disallow and others. Example: |
| 23 | * @code |
| 24 | * * array = [ |
| 25 | * * 'rule1' => [ |
| 26 | * * 'warn' => [ |
| 27 | * * 'action' => 'warn', |
| 28 | * * 'parameters' => [ 'abusefilter-warning' ] |
| 29 | * * ] |
| 30 | * * ] |
| 31 | * * ]; |
| 32 | * * @endcode |
| 33 | * |
| 34 | * With type 'warn' there is also warning_html for html warning message. |
| 35 | * |
| 36 | * @copyright See AUTHORS.txt |
| 37 | * @license GPL-2.0-or-later |
| 38 | */ |
| 39 | class AbuseFilterChecker { |
| 40 | |
| 41 | public function __construct( |
| 42 | private readonly bool $isAbuseFilterExtensionLoaded, |
| 43 | private readonly WikiPageFactory $wikiPageFactory, |
| 44 | private readonly ?VariableGeneratorFactory $variableGeneratorFactory, |
| 45 | private readonly ?ConsequencesLookup $consequencesLookup, |
| 46 | private readonly ?FilterLookup $filterLookup, |
| 47 | private readonly ?FilterRunnerFactory $filterRunnerFactory |
| 48 | ) { |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Check a title for any rule violations. |
| 53 | * |
| 54 | * @param Title $title Title to check |
| 55 | * @param User $user User performing the action |
| 56 | * |
| 57 | * @return array List of any rule violations |
| 58 | */ |
| 59 | public function checkTitleForUser( Title $title, User $user ): array { |
| 60 | if ( !$this->isAbuseFilterExtensionLoaded ) { |
| 61 | return []; |
| 62 | } |
| 63 | |
| 64 | $gen = $this->variableGeneratorFactory->newGenerator(); |
| 65 | $vars = $gen |
| 66 | ->addUserVars( $user ) |
| 67 | ->addTitleVars( $title, 'page' ) |
| 68 | ->addGenericVars() |
| 69 | ->getVariableHolder(); |
| 70 | $vars->setVar( 'action', 'edit' ); |
| 71 | |
| 72 | return $this->getResults( $user, $title, $vars ); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Check some text for rule violations. |
| 77 | * |
| 78 | * @param User $user |
| 79 | * @param Title $title |
| 80 | * @param string|null $text Text to check |
| 81 | * @return array List of any rule violations |
| 82 | */ |
| 83 | public function checkSectionForTitleAndUser( User $user, Title $title, ?string $text ): array { |
| 84 | if ( !$this->isAbuseFilterExtensionLoaded ) { |
| 85 | return []; |
| 86 | } |
| 87 | |
| 88 | if ( $text === null || mb_strlen( $text ) < 150 ) { |
| 89 | // Don't validate sections that are too short. The validations |
| 90 | // happen while editing is going on. |
| 91 | return []; |
| 92 | } |
| 93 | |
| 94 | // Add AbuseFilter variables. Note that we are adding the title |
| 95 | // here. That will cause filters about titles executed for every section. |
| 96 | // But not passing title will cause content filters with namespace rules |
| 97 | // not to produce results. We will attempt to filter out title errors |
| 98 | // away with array_diff_key. |
| 99 | $gen = $this->variableGeneratorFactory->newGenerator(); |
| 100 | $vars = $gen |
| 101 | ->addUserVars( $user ) |
| 102 | ->addTitleVars( $title, 'page' ) |
| 103 | ->addEditVars( $this->wikiPageFactory->newFromTitle( $title ), $user ) |
| 104 | ->addGenericVars() |
| 105 | ->getVariableHolder(); |
| 106 | $vars->setVar( 'action', 'edit' ); |
| 107 | $vars->setVar( 'old_wikitext', '' ); |
| 108 | $vars->setVar( 'new_wikitext', $text ); |
| 109 | |
| 110 | $results = $this->getResults( $user, $title, $vars ); |
| 111 | return array_diff_key( $results, $this->checkTitleForUser( $title, $user ) ); |
| 112 | } |
| 113 | |
| 114 | private function getResults( User $user, Title $title, VariableHolder $vars ): array { |
| 115 | static $seriousActions = [ 'warn', 'block', 'disallow', 'degroup' ]; |
| 116 | |
| 117 | $runner = $this->filterRunnerFactory->newRunner( $user, $title, $vars, 'default' ); |
| 118 | $filters = $runner->checkAllFilters(); |
| 119 | |
| 120 | $filters = array_keys( array_filter( $filters ) ); |
| 121 | $actions = $this->consequencesLookup->getConsequencesForFilters( $filters ); |
| 122 | |
| 123 | $results = []; |
| 124 | foreach ( $actions as $key => $val ) { |
| 125 | [ $filterID, $isGlobal ] = GlobalNameUtils::splitGlobalName( $key ); |
| 126 | $rulename = $this->filterLookup->getFilter( $filterID, $isGlobal )->getName(); |
| 127 | |
| 128 | // No point alerting the user about non-serious actions. T136596 |
| 129 | $actionsForRule = array_keys( $val ); |
| 130 | if ( array_intersect( $seriousActions, $actionsForRule ) === [] ) { |
| 131 | continue; |
| 132 | } |
| 133 | |
| 134 | if ( isset( $val['warn'][0] ) ) { |
| 135 | $val['warn']['messageHtml'] = wfMessage( $val['warn'][0] )->params( $rulename )->parse(); |
| 136 | } |
| 137 | |
| 138 | $results[$key] = $val; |
| 139 | } |
| 140 | |
| 141 | return $results; |
| 142 | } |
| 143 | } |