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CheckMatch.php
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CheckMatch.php
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<?php
namespace MediaWiki\Extension\AbuseFilter\Api;
use LogEventsList;
use LogicException;
use LogPage;
use MediaWiki\Api\ApiBase;
use MediaWiki\Api\ApiMain;
use MediaWiki\Api\ApiResult;
use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager;
use MediaWiki\Extension\AbuseFilter\AbuseFilterServices;
use MediaWiki\Extension\AbuseFilter\Parser\RuleCheckerFactory;
use MediaWiki\Extension\AbuseFilter\Special\SpecialAbuseLog;
use MediaWiki\Extension\AbuseFilter\VariableGenerator\VariableGeneratorFactory;
use MediaWiki\Extension\AbuseFilter\Variables\VariableHolder;
use MediaWiki\Extension\AbuseFilter\Variables\VariablesBlobStore;
use MediaWiki\Json\FormatJson;
use MediaWiki\Revision\RevisionRecord;
use RecentChange;
use Wikimedia\ParamValidator\ParamValidator;
class CheckMatch extends ApiBase {
/** @var RuleCheckerFactory */
private $ruleCheckerFactory;
/** @var AbuseFilterPermissionManager */
private $afPermManager;
/** @var VariablesBlobStore */
private $afVariablesBlobStore;
/** @var VariableGeneratorFactory */
private $afVariableGeneratorFactory;
/**
* @param ApiMain $main
* @param string $action
* @param RuleCheckerFactory $ruleCheckerFactory
* @param AbuseFilterPermissionManager $afPermManager
* @param VariablesBlobStore $afVariablesBlobStore
* @param VariableGeneratorFactory $afVariableGeneratorFactory
*/
public function __construct(
ApiMain $main,
$action,
RuleCheckerFactory $ruleCheckerFactory,
AbuseFilterPermissionManager $afPermManager,
VariablesBlobStore $afVariablesBlobStore,
VariableGeneratorFactory $afVariableGeneratorFactory
) {
parent::__construct( $main, $action );
$this->ruleCheckerFactory = $ruleCheckerFactory;
$this->afPermManager = $afPermManager;
$this->afVariablesBlobStore = $afVariablesBlobStore;
$this->afVariableGeneratorFactory = $afVariableGeneratorFactory;
}
/**
* @inheritDoc
*/
public function execute() {
$performer = $this->getAuthority();
$params = $this->extractRequestParams();
$this->requireOnlyOneParameter( $params, 'vars', 'rcid', 'logid' );
// "Anti-DoS"
if ( !$this->afPermManager->canUseTestTools( $performer ) ) {
$this->dieWithError( 'apierror-abusefilter-canttest', 'permissiondenied' );
}
$vars = null;
if ( $params['vars'] ) {
$pairs = FormatJson::decode( $params['vars'], true );
$vars = VariableHolder::newFromArray( $pairs );
} elseif ( $params['rcid'] ) {
$rc = RecentChange::newFromId( $params['rcid'] );
if ( !$rc ) {
$this->dieWithError( [ 'apierror-nosuchrcid', $params['rcid'] ] );
}
$type = (int)$rc->getAttribute( 'rc_type' );
$deletedValue = $rc->getAttribute( 'rc_deleted' );
if (
(
$type === RC_LOG &&
!LogEventsList::userCanBitfield(
$deletedValue,
LogPage::SUPPRESSED_ACTION | LogPage::SUPPRESSED_USER,
$performer
)
) || (
$type !== RC_LOG &&
!RevisionRecord::userCanBitfield( $deletedValue, RevisionRecord::SUPPRESSED_ALL, $performer )
)
) {
// T223654 - Same check as in AbuseFilterChangesList
$this->dieWithError( 'apierror-permissiondenied-generic', 'deletedrc' );
}
$varGenerator = $this->afVariableGeneratorFactory->newRCGenerator( $rc, $this->getUser() );
$vars = $varGenerator->getVars();
} elseif ( $params['logid'] ) {
$row = $this->getDB()->newSelectQueryBuilder()
->select( '*' )
->from( 'abuse_filter_log' )
->where( [ 'afl_id' => $params['logid'] ] )
->caller( __METHOD__ )
->fetchRow();
if ( !$row ) {
$this->dieWithError( [ 'apierror-abusefilter-nosuchlogid', $params['logid'] ], 'nosuchlogid' );
}
// TODO: Replace with dependency injection once security patch is uploaded publicly.
$afFilterLookup = AbuseFilterServices::getFilterLookup();
$privacyLevel = $afFilterLookup->getFilter( $row->afl_filter_id, $row->afl_global )
->getPrivacyLevel();
$canSeeDetails = $this->afPermManager->canSeeLogDetailsForFilter( $performer, $privacyLevel );
if ( !$canSeeDetails ) {
$this->dieWithError( 'apierror-permissiondenied-generic', 'cannotseedetails' );
}
$visibility = SpecialAbuseLog::getEntryVisibilityForUser( $row, $performer, $this->afPermManager );
if ( $visibility !== SpecialAbuseLog::VISIBILITY_VISIBLE ) {
// T223654 - Same check as in SpecialAbuseLog. Both the visibility of the AbuseLog entry
// and the corresponding revision are checked.
$this->dieWithError( 'apierror-permissiondenied-generic', 'deletedabuselog' );
}
$vars = $this->afVariablesBlobStore->loadVarDump( $row );
}
if ( $vars === null ) {
// @codeCoverageIgnoreStart
throw new LogicException( 'Impossible.' );
// @codeCoverageIgnoreEnd
}
$ruleChecker = $this->ruleCheckerFactory->newRuleChecker( $vars );
if ( !$ruleChecker->checkSyntax( $params['filter'] )->isValid() ) {
$this->dieWithError( 'apierror-abusefilter-badsyntax', 'badsyntax' );
}
$result = [
ApiResult::META_BC_BOOLS => [ 'result' ],
'result' => $ruleChecker->checkConditions( $params['filter'] )->getResult(),
];
$this->getResult()->addValue(
null,
$this->getModuleName(),
$result
);
}
/**
* @codeCoverageIgnore Merely declarative
* @inheritDoc
*/
public function getAllowedParams() {
return [
'filter' => [
ParamValidator::PARAM_REQUIRED => true,
],
'vars' => null,
'rcid' => [
ParamValidator::PARAM_TYPE => 'integer'
],
'logid' => [
ParamValidator::PARAM_TYPE => 'integer'
],
];
}
/**
* @codeCoverageIgnore Merely declarative
* @inheritDoc
*/
protected function getExamplesMessages() {
return [
'action=abusefiltercheckmatch&filter=!("autoconfirmed"%20in%20user_groups)&rcid=15'
=> 'apihelp-abusefiltercheckmatch-example-1',
];
}
}

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text/x-php
Expires
Fri, Jul 3, 21:22 (22 h, 12 m)
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Storage Handle
4a/fc/24527ce5a444ba8db19fac174b7e
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CheckMatch.php (5 KB)

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