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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\AbuseFilter\Api; |
| 4 | |
| 5 | use LogEventsList; |
| 6 | use LogicException; |
| 7 | use LogPage; |
| 8 | use MediaWiki\Api\ApiBase; |
| 9 | use MediaWiki\Api\ApiMain; |
| 10 | use MediaWiki\Api\ApiResult; |
| 11 | use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager; |
| 12 | use MediaWiki\Extension\AbuseFilter\AbuseFilterServices; |
| 13 | use MediaWiki\Extension\AbuseFilter\Parser\RuleCheckerFactory; |
| 14 | use MediaWiki\Extension\AbuseFilter\Special\SpecialAbuseLog; |
| 15 | use MediaWiki\Extension\AbuseFilter\VariableGenerator\VariableGeneratorFactory; |
| 16 | use MediaWiki\Extension\AbuseFilter\Variables\VariableHolder; |
| 17 | use MediaWiki\Extension\AbuseFilter\Variables\VariablesBlobStore; |
| 18 | use MediaWiki\Json\FormatJson; |
| 19 | use MediaWiki\Revision\RevisionRecord; |
| 20 | use RecentChange; |
| 21 | use Wikimedia\ParamValidator\ParamValidator; |
| 22 | |
| 23 | class CheckMatch extends ApiBase { |
| 24 | |
| 25 | private RuleCheckerFactory $ruleCheckerFactory; |
| 26 | private AbuseFilterPermissionManager $afPermManager; |
| 27 | private VariablesBlobStore $afVariablesBlobStore; |
| 28 | private VariableGeneratorFactory $afVariableGeneratorFactory; |
| 29 | |
| 30 | public function __construct( |
| 31 | ApiMain $main, |
| 32 | string $action, |
| 33 | RuleCheckerFactory $ruleCheckerFactory, |
| 34 | AbuseFilterPermissionManager $afPermManager, |
| 35 | VariablesBlobStore $afVariablesBlobStore, |
| 36 | VariableGeneratorFactory $afVariableGeneratorFactory |
| 37 | ) { |
| 38 | parent::__construct( $main, $action ); |
| 39 | $this->ruleCheckerFactory = $ruleCheckerFactory; |
| 40 | $this->afPermManager = $afPermManager; |
| 41 | $this->afVariablesBlobStore = $afVariablesBlobStore; |
| 42 | $this->afVariableGeneratorFactory = $afVariableGeneratorFactory; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * @inheritDoc |
| 47 | */ |
| 48 | public function execute() { |
| 49 | $performer = $this->getAuthority(); |
| 50 | $params = $this->extractRequestParams(); |
| 51 | $this->requireOnlyOneParameter( $params, 'vars', 'rcid', 'logid' ); |
| 52 | |
| 53 | // "Anti-DoS" |
| 54 | if ( !$this->afPermManager->canUseTestTools( $performer ) ) { |
| 55 | $this->dieWithError( 'apierror-abusefilter-canttest', 'permissiondenied' ); |
| 56 | } |
| 57 | |
| 58 | $vars = null; |
| 59 | if ( $params['vars'] ) { |
| 60 | $pairs = FormatJson::decode( $params['vars'], true ); |
| 61 | $vars = VariableHolder::newFromArray( $pairs ); |
| 62 | } elseif ( $params['rcid'] ) { |
| 63 | $rc = RecentChange::newFromId( $params['rcid'] ); |
| 64 | |
| 65 | if ( !$rc ) { |
| 66 | $this->dieWithError( [ 'apierror-nosuchrcid', $params['rcid'] ] ); |
| 67 | } |
| 68 | |
| 69 | $type = (int)$rc->getAttribute( 'rc_type' ); |
| 70 | $deletedValue = $rc->getAttribute( 'rc_deleted' ); |
| 71 | if ( |
| 72 | ( |
| 73 | $type === RC_LOG && |
| 74 | !LogEventsList::userCanBitfield( |
| 75 | $deletedValue, |
| 76 | LogPage::SUPPRESSED_ACTION | LogPage::SUPPRESSED_USER, |
| 77 | $performer |
| 78 | ) |
| 79 | ) || ( |
| 80 | $type !== RC_LOG && |
| 81 | !RevisionRecord::userCanBitfield( $deletedValue, RevisionRecord::SUPPRESSED_ALL, $performer ) |
| 82 | ) |
| 83 | ) { |
| 84 | // T223654 - Same check as in AbuseFilterChangesList |
| 85 | $this->dieWithError( 'apierror-permissiondenied-generic', 'deletedrc' ); |
| 86 | } |
| 87 | |
| 88 | $varGenerator = $this->afVariableGeneratorFactory->newRCGenerator( $rc, $this->getUser() ); |
| 89 | $vars = $varGenerator->getVars(); |
| 90 | } elseif ( $params['logid'] ) { |
| 91 | $row = $this->getDB()->newSelectQueryBuilder() |
| 92 | ->select( '*' ) |
| 93 | ->from( 'abuse_filter_log' ) |
| 94 | ->where( [ 'afl_id' => $params['logid'] ] ) |
| 95 | ->caller( __METHOD__ ) |
| 96 | ->fetchRow(); |
| 97 | |
| 98 | if ( !$row ) { |
| 99 | $this->dieWithError( [ 'apierror-abusefilter-nosuchlogid', $params['logid'] ], 'nosuchlogid' ); |
| 100 | } |
| 101 | |
| 102 | // TODO: Replace with dependency injection once security patch is uploaded publicly. |
| 103 | $afFilterLookup = AbuseFilterServices::getFilterLookup(); |
| 104 | $privacyLevel = $afFilterLookup->getFilter( $row->afl_filter_id, $row->afl_global ) |
| 105 | ->getPrivacyLevel(); |
| 106 | $canSeeDetails = $this->afPermManager->canSeeLogDetailsForFilter( $performer, $privacyLevel ); |
| 107 | if ( !$canSeeDetails ) { |
| 108 | $this->dieWithError( 'apierror-permissiondenied-generic', 'cannotseedetails' ); |
| 109 | } |
| 110 | |
| 111 | $visibility = SpecialAbuseLog::getEntryVisibilityForUser( $row, $performer, $this->afPermManager ); |
| 112 | if ( $visibility !== SpecialAbuseLog::VISIBILITY_VISIBLE ) { |
| 113 | // T223654 - Same check as in SpecialAbuseLog. Both the visibility of the AbuseLog entry |
| 114 | // and the corresponding revision are checked. |
| 115 | $this->dieWithError( 'apierror-permissiondenied-generic', 'deletedabuselog' ); |
| 116 | } |
| 117 | |
| 118 | $vars = $this->afVariablesBlobStore->loadVarDump( $row ); |
| 119 | } |
| 120 | if ( $vars === null ) { |
| 121 | // @codeCoverageIgnoreStart |
| 122 | throw new LogicException( 'Impossible.' ); |
| 123 | // @codeCoverageIgnoreEnd |
| 124 | } |
| 125 | |
| 126 | $ruleChecker = $this->ruleCheckerFactory->newRuleChecker( $vars ); |
| 127 | if ( !$ruleChecker->checkSyntax( $params['filter'] )->isValid() ) { |
| 128 | $this->dieWithError( 'apierror-abusefilter-badsyntax', 'badsyntax' ); |
| 129 | } |
| 130 | |
| 131 | $result = [ |
| 132 | ApiResult::META_BC_BOOLS => [ 'result' ], |
| 133 | 'result' => $ruleChecker->checkConditions( $params['filter'] )->getResult(), |
| 134 | ]; |
| 135 | |
| 136 | $this->getResult()->addValue( |
| 137 | null, |
| 138 | $this->getModuleName(), |
| 139 | $result |
| 140 | ); |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * @codeCoverageIgnore Merely declarative |
| 145 | * @inheritDoc |
| 146 | */ |
| 147 | public function getAllowedParams() { |
| 148 | return [ |
| 149 | 'filter' => [ |
| 150 | ParamValidator::PARAM_REQUIRED => true, |
| 151 | ], |
| 152 | 'vars' => null, |
| 153 | 'rcid' => [ |
| 154 | ParamValidator::PARAM_TYPE => 'integer' |
| 155 | ], |
| 156 | 'logid' => [ |
| 157 | ParamValidator::PARAM_TYPE => 'integer' |
| 158 | ], |
| 159 | ]; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * @codeCoverageIgnore Merely declarative |
| 164 | * @inheritDoc |
| 165 | */ |
| 166 | protected function getExamplesMessages() { |
| 167 | return [ |
| 168 | 'action=abusefiltercheckmatch&filter=!("autoconfirmed"%20in%20user_groups)&rcid=15' |
| 169 | => 'apihelp-abusefiltercheckmatch-example-1', |
| 170 | ]; |
| 171 | } |
| 172 | } |