mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/AbuseFilter.git
synced 2024-12-01 00:56:26 +00:00
77f6ecce13
Make FilterProfiler::getFilterProfile return stats unchanged, in a structured way. Move computations to AbuseFilterViewEdit, as they are only useful there. Don't return false on cache misses, return arrays with zero values instead. Bug: T266531 Change-Id: I8718cc31a5004340bf742315c7075e10a61fcbfd
1245 lines
38 KiB
PHP
1245 lines
38 KiB
PHP
<?php
|
|
|
|
use MediaWiki\Extension\AbuseFilter\AbuseFilterServices;
|
|
use MediaWiki\Extension\AbuseFilter\ChangeTagger;
|
|
use MediaWiki\Extension\AbuseFilter\FilterProfiler;
|
|
use MediaWiki\Extension\AbuseFilter\Hooks\AbuseFilterHookRunner;
|
|
use MediaWiki\Extension\AbuseFilter\VariableGenerator\VariableGenerator;
|
|
use MediaWiki\Logger\LoggerFactory;
|
|
use MediaWiki\MediaWikiServices;
|
|
use MediaWiki\Session\SessionManager;
|
|
use Wikimedia\IPUtils;
|
|
use Wikimedia\Rdbms\IDatabase;
|
|
|
|
/**
|
|
* This class contains the logic for executing abuse filters and their actions. The entry points are
|
|
* run() and runForStash(). Note that run() can only be executed once on a given instance.
|
|
* @todo In a perfect world, every time this class gets constructed we should have a context
|
|
* source at hand. Unfortunately, this currently isn't true, as the hooks used for filtering
|
|
* don't pass a full context. If they did, this class would just extend ContextSource and use
|
|
* that to retrieve user, title, globals etc.
|
|
*/
|
|
class AbuseFilterRunner {
|
|
/**
|
|
* @var User The user who performed the action being filtered
|
|
*/
|
|
protected $user;
|
|
/**
|
|
* @var Title The title where the action being filtered was performed
|
|
*/
|
|
protected $title;
|
|
/**
|
|
* @var AbuseFilterVariableHolder The variables for the current action
|
|
*/
|
|
protected $vars;
|
|
/**
|
|
* @var string The group of filters to check (as defined in $wgAbuseFilterValidGroups)
|
|
*/
|
|
protected $group;
|
|
/**
|
|
* @var string The action we're filtering
|
|
*/
|
|
protected $action;
|
|
|
|
/**
|
|
* @var array Data from per-filter profiling. Shape:
|
|
* [ filterName => [ 'time' => float, 'conds' => int, 'result' => bool ] ]
|
|
* @phan-var array<string,array{time:float,conds:int,result:bool}>
|
|
*
|
|
* Where 'timeTaken' is in seconds, 'result' is a boolean indicating whether the filter matched
|
|
* the action, and 'filterID' is "{prefix}-{ID}" ; Prefix should be empty for local
|
|
* filters. In stash mode this member is saved in cache, while in execute mode it's used to
|
|
* update profiling after checking all filters.
|
|
*/
|
|
protected $profilingData;
|
|
|
|
/**
|
|
* @var AbuseFilterParser The parser instance to use to check all filters
|
|
* @protected Public for back-compat only, will be made protected. self::init already handles
|
|
* building a parser object.
|
|
*/
|
|
public $parser;
|
|
/**
|
|
* @var bool Whether a run() was already performed. Used to avoid multiple executions with the
|
|
* same members.
|
|
*/
|
|
private $executed = false;
|
|
|
|
/** @var AbuseFilterHookRunner */
|
|
private $hookRunner;
|
|
|
|
/** @var FilterProfiler */
|
|
private $filterProfiler;
|
|
|
|
/** @var ChangeTagger */
|
|
private $changeTagger;
|
|
|
|
/**
|
|
* @param User $user The user who performed the action being filtered
|
|
* @param Title $title The title where the action being filtered was performed
|
|
* @param AbuseFilterVariableHolder $vars The variables for the current action
|
|
* @param string $group The group of filters to check. It must be defined as so in
|
|
* $wgAbuseFilterValidGroups, or this will throw.
|
|
* @throws InvalidArgumentException
|
|
*/
|
|
public function __construct( User $user, Title $title, AbuseFilterVariableHolder $vars, $group ) {
|
|
global $wgAbuseFilterValidGroups;
|
|
if ( !in_array( $group, $wgAbuseFilterValidGroups ) ) {
|
|
throw new InvalidArgumentException( '$group must be defined in $wgAbuseFilterValidGroups' );
|
|
}
|
|
if ( !$vars->varIsSet( 'action' ) ) {
|
|
throw new InvalidArgumentException( "The 'action' variable is not set." );
|
|
}
|
|
$this->user = $user;
|
|
$this->title = $title;
|
|
$this->vars = $vars;
|
|
$this->vars->setLogger( LoggerFactory::getInstance( 'AbuseFilter' ) );
|
|
$this->group = $group;
|
|
$this->action = $vars->getVar( 'action' )->toString();
|
|
$this->hookRunner = AbuseFilterHookRunner::getRunner();
|
|
$this->filterProfiler = AbuseFilterServices::getFilterProfiler();
|
|
$this->changeTagger = AbuseFilterServices::getChangeTagger();
|
|
}
|
|
|
|
/**
|
|
* Inits variables and parser right before running
|
|
*/
|
|
private function init() {
|
|
// Add vars from extensions
|
|
$this->hookRunner->onAbuseFilterFilterAction(
|
|
$this->vars,
|
|
$this->title
|
|
);
|
|
$this->hookRunner->onAbuseFilterAlterVariables(
|
|
$this->vars,
|
|
$this->title,
|
|
$this->user
|
|
);
|
|
$generator = new VariableGenerator( $this->vars );
|
|
$this->vars = $generator->addGenericVars()->getVariableHolder();
|
|
|
|
$this->vars->forFilter = true;
|
|
$this->vars->setVar( 'timestamp', (int)wfTimestamp( TS_UNIX ) );
|
|
$this->parser = $this->getParser();
|
|
$this->parser->setStatsd( MediaWikiServices::getInstance()->getStatsdDataFactory() );
|
|
$this->profilingData = [];
|
|
}
|
|
|
|
/**
|
|
* Shortcut method, so that it can be overridden in mocks.
|
|
* @return AbuseFilterParser
|
|
*/
|
|
protected function getParser() : AbuseFilterParser {
|
|
return AbuseFilter::getDefaultParser( $this->vars );
|
|
}
|
|
|
|
/**
|
|
* The main entry point of this class. This method runs all filters and takes their consequences.
|
|
*
|
|
* @param bool $allowStash Whether we are allowed to check the cache to see if there's a cached
|
|
* result of a previous execution for the same edit.
|
|
* @throws BadMethodCallException If run() was already called on this instance
|
|
* @return Status Good if no action has been taken, a fatal otherwise.
|
|
*/
|
|
public function run( $allowStash = true ) : Status {
|
|
if ( $this->executed ) {
|
|
throw new BadMethodCallException( 'run() was already called on this instance.' );
|
|
}
|
|
$this->executed = true;
|
|
$this->init();
|
|
|
|
$skipReasons = [];
|
|
$shouldFilter = $this->hookRunner->onAbuseFilterShouldFilterAction(
|
|
$this->vars, $this->title, $this->user, $skipReasons
|
|
);
|
|
if ( !$shouldFilter ) {
|
|
$logger = LoggerFactory::getInstance( 'AbuseFilter' );
|
|
$logger->info(
|
|
'Skipping action {action}. Reasons provided: {reasons}',
|
|
[ 'action' => $this->action, 'reasons' => implode( ', ', $skipReasons ) ]
|
|
);
|
|
return Status::newGood();
|
|
}
|
|
|
|
$useStash = $allowStash && $this->action === 'edit';
|
|
|
|
$fromCache = false;
|
|
$result = [];
|
|
if ( $useStash ) {
|
|
$cacheData = $this->seekCache();
|
|
if ( $cacheData !== false ) {
|
|
// Use cached vars (T176291) and profiling data (T191430)
|
|
$this->vars = AbuseFilterVariableHolder::newFromArray( $cacheData['vars'] );
|
|
$result = [
|
|
'hitCondLimit' => $cacheData['hitCondLimit'],
|
|
'matches' => $cacheData['matches'],
|
|
'runtime' => $cacheData['runtime'],
|
|
'condCount' => $cacheData['condCount'],
|
|
'profiling' => $cacheData['profiling']
|
|
];
|
|
$fromCache = true;
|
|
}
|
|
}
|
|
|
|
if ( !$fromCache ) {
|
|
$startTime = microtime( true );
|
|
// Ensure there's no extra time leftover
|
|
AFComputedVariable::$profilingExtraTime = 0;
|
|
|
|
$hitCondLimit = false;
|
|
// This also updates $this->profilingData and $this->parser->mCondCount used later
|
|
$matches = $this->checkAllFilters( $hitCondLimit );
|
|
$timeTaken = ( microtime( true ) - $startTime - AFComputedVariable::$profilingExtraTime ) * 1000;
|
|
$result = [
|
|
'hitCondLimit' => $hitCondLimit,
|
|
'matches' => $matches,
|
|
'runtime' => $timeTaken,
|
|
'condCount' => $this->parser->getCondCount(),
|
|
'profiling' => $this->profilingData
|
|
];
|
|
}
|
|
'@phan-var array{hitCondLimit:bool,matches:array,runtime:int,condCount:int,profiling:array} $result';
|
|
|
|
$matchedFilters = array_keys( array_filter( $result['matches'] ) );
|
|
$allFilters = array_keys( $result['matches'] );
|
|
|
|
$this->profileExecution( $result, $matchedFilters, $allFilters );
|
|
|
|
if ( $result['hitCondLimit'] ) {
|
|
$this->changeTagger->addConditionsLimitTag( $this->getSpecsForTagger() );
|
|
}
|
|
|
|
if ( count( $matchedFilters ) === 0 ) {
|
|
return Status::newGood();
|
|
}
|
|
|
|
$status = $this->executeFilterActions( $matchedFilters );
|
|
$actionsTaken = $status->getValue();
|
|
|
|
$this->addLogEntries( $actionsTaken );
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Similar to run(), but runs in "stash" mode, which means filters are executed, no actions are
|
|
* taken, and the result is saved in cache to be later reused. This can only be used for edits,
|
|
* and not doing so will throw.
|
|
*
|
|
* @throws InvalidArgumentException
|
|
* @return Status Always a good status, since we're only saving data.
|
|
*/
|
|
public function runForStash() : Status {
|
|
if ( $this->action !== 'edit' ) {
|
|
throw new InvalidArgumentException(
|
|
__METHOD__ . " can only be called for edits, called for action {$this->action}."
|
|
);
|
|
}
|
|
|
|
$this->init();
|
|
|
|
$skipReasons = [];
|
|
$shouldFilter = $this->hookRunner->onAbuseFilterShouldFilterAction(
|
|
$this->vars, $this->title, $this->user, $skipReasons
|
|
);
|
|
if ( !$shouldFilter ) {
|
|
// Don't log it yet
|
|
return Status::newGood();
|
|
}
|
|
|
|
$cache = ObjectCache::getLocalClusterInstance();
|
|
$stashKey = $this->getStashKey( $cache );
|
|
|
|
$startTime = microtime( true );
|
|
// Ensure there's no extra time leftover
|
|
AFComputedVariable::$profilingExtraTime = 0;
|
|
|
|
$hitCondLimit = false;
|
|
$matchedFilters = $this->checkAllFilters( $hitCondLimit );
|
|
// Save the filter stash result and do nothing further
|
|
$cacheData = [
|
|
'matches' => $matchedFilters,
|
|
'hitCondLimit' => $hitCondLimit,
|
|
'condCount' => $this->parser->getCondCount(),
|
|
'runtime' => ( microtime( true ) - $startTime - AFComputedVariable::$profilingExtraTime ) * 1000,
|
|
'vars' => $this->vars->dumpAllVars(),
|
|
'profiling' => $this->profilingData
|
|
];
|
|
|
|
$cache->set( $stashKey, $cacheData, $cache::TTL_MINUTE );
|
|
$this->logCache( 'store', $stashKey );
|
|
|
|
return Status::newGood();
|
|
}
|
|
|
|
/**
|
|
* Search the cache to find data for a previous execution done for the current edit.
|
|
*
|
|
* @return false|array False on failure, the array with data otherwise
|
|
*/
|
|
protected function seekCache() {
|
|
$cache = ObjectCache::getLocalClusterInstance();
|
|
$stashKey = $this->getStashKey( $cache );
|
|
|
|
$ret = $cache->get( $stashKey );
|
|
$status = $ret !== false ? 'hit' : 'miss';
|
|
$this->logCache( $status, $stashKey );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Get the stash key for the current variables
|
|
*
|
|
* @param BagOStuff $cache
|
|
* @return string
|
|
*/
|
|
protected function getStashKey( BagOStuff $cache ) {
|
|
$inputVars = $this->vars->exportNonLazyVars();
|
|
// Exclude noisy fields that have superficial changes
|
|
$excludedVars = [
|
|
'old_html' => true,
|
|
'new_html' => true,
|
|
'user_age' => true,
|
|
'timestamp' => true,
|
|
'page_age' => true,
|
|
'moved_from_age' => true,
|
|
'moved_to_age' => true
|
|
];
|
|
|
|
$inputVars = array_diff_key( $inputVars, $excludedVars );
|
|
ksort( $inputVars );
|
|
$hash = md5( serialize( $inputVars ) );
|
|
|
|
return $cache->makeKey(
|
|
'abusefilter',
|
|
'check-stash',
|
|
$this->group,
|
|
$hash,
|
|
'v2'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Log cache operations related to stashed edits, i.e. store, hit and miss
|
|
*
|
|
* @param string $type Either 'store', 'hit' or 'miss'
|
|
* @param string $key The cache key used
|
|
* @throws InvalidArgumentException
|
|
*/
|
|
protected function logCache( $type, $key ) {
|
|
if ( !in_array( $type, [ 'store', 'hit', 'miss' ] ) ) {
|
|
throw new InvalidArgumentException( '$type must be either "store", "hit" or "miss"' );
|
|
}
|
|
$logger = LoggerFactory::getInstance( 'StashEdit' );
|
|
// Bots do not use edit stashing, so avoid distorting the stats
|
|
$statsd = $this->user->isBot()
|
|
? new NullStatsdDataFactory()
|
|
: MediaWikiServices::getInstance()->getStatsdDataFactory();
|
|
|
|
$logger->debug( __METHOD__ . ": cache $type for '{$this->title}' (key $key)." );
|
|
$statsd->increment( "abusefilter.check-stash.$type" );
|
|
}
|
|
|
|
/**
|
|
* Returns an associative array of filters which were tripped
|
|
*
|
|
* @protected Public for back compat only; this will actually be made protected in the future.
|
|
* You should either rely on $this->run() or subclass this class.
|
|
* @todo This method should simply return an array with IDs of matched filters as values,
|
|
* since we always end up filtering it after calling this method.
|
|
* @param bool|null &$hitCondLimit TEMPORARY
|
|
* @return bool[] Map of (integer filter ID => bool)
|
|
*/
|
|
public function checkAllFilters( &$hitCondLimit = false ) : array {
|
|
global $wgAbuseFilterCentralDB, $wgAbuseFilterIsCentral, $wgAbuseFilterConditionLimit;
|
|
|
|
// Ensure that we start fresh, see T193374
|
|
$this->parser->resetCondCount();
|
|
|
|
$matchedFilters = [];
|
|
|
|
foreach ( $this->getLocalFilters() as $row ) {
|
|
$matchedFilters[$row->af_id] = $this->checkFilter( $row );
|
|
}
|
|
|
|
if ( $wgAbuseFilterCentralDB && !$wgAbuseFilterIsCentral ) {
|
|
foreach ( $this->getGlobalFilters() as $row ) {
|
|
$matchedFilters[ AbuseFilter::buildGlobalName( $row->af_id ) ] =
|
|
$this->checkFilter( $row, true );
|
|
}
|
|
}
|
|
|
|
// Tag the action if the condition limit was hit
|
|
$hitCondLimit = $this->parser->getCondCount() > $wgAbuseFilterConditionLimit;
|
|
|
|
return $matchedFilters;
|
|
}
|
|
|
|
/**
|
|
* @return array abuse_filter DB rows
|
|
*/
|
|
protected function getLocalFilters() : array {
|
|
return iterator_to_array( wfGetDB( DB_REPLICA )->select(
|
|
'abuse_filter',
|
|
AbuseFilter::ALL_ABUSE_FILTER_FIELDS,
|
|
[
|
|
'af_enabled' => 1,
|
|
'af_deleted' => 0,
|
|
'af_group' => $this->group,
|
|
],
|
|
__METHOD__
|
|
) );
|
|
}
|
|
|
|
/**
|
|
* @return array abuse_filter rows from the foreign DB
|
|
*/
|
|
protected function getGlobalFilters() : array {
|
|
$globalRulesKey = AbuseFilter::getGlobalRulesKey( $this->group );
|
|
$fname = __METHOD__;
|
|
|
|
return MediaWikiServices::getInstance()->getMainWANObjectCache()->getWithSetCallback(
|
|
$globalRulesKey,
|
|
WANObjectCache::TTL_WEEK,
|
|
function () use ( $fname ) {
|
|
$fdb = AbuseFilter::getCentralDB( DB_REPLICA );
|
|
|
|
return iterator_to_array( $fdb->select(
|
|
'abuse_filter',
|
|
AbuseFilter::ALL_ABUSE_FILTER_FIELDS,
|
|
[
|
|
'af_enabled' => 1,
|
|
'af_deleted' => 0,
|
|
'af_global' => 1,
|
|
'af_group' => $this->group,
|
|
],
|
|
$fname
|
|
) );
|
|
},
|
|
[
|
|
'checkKeys' => [ $globalRulesKey ],
|
|
'lockTSE' => 300,
|
|
'version' => 1
|
|
]
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Check the conditions of a single filter, and profile it if $this->executeMode is true
|
|
*
|
|
* @param stdClass $row
|
|
* @param bool $global
|
|
* @return bool
|
|
*/
|
|
protected function checkFilter( $row, $global = false ) {
|
|
$filterName = AbuseFilter::buildGlobalName( $row->af_id, $global );
|
|
|
|
$startConds = $this->parser->getCondCount();
|
|
$startTime = microtime( true );
|
|
$origExtraTime = AFComputedVariable::$profilingExtraTime;
|
|
|
|
// Store the row somewhere convenient
|
|
AbuseFilter::cacheFilter( $filterName, $row );
|
|
|
|
$pattern = trim( $row->af_pattern );
|
|
$this->parser->setFilter( $filterName );
|
|
$result = $this->parser->checkConditions( $pattern, true, $filterName );
|
|
|
|
$actualExtra = AFComputedVariable::$profilingExtraTime - $origExtraTime;
|
|
$timeTaken = 1000 * ( microtime( true ) - $startTime - $actualExtra );
|
|
$condsUsed = $this->parser->getCondCount() - $startConds;
|
|
|
|
$this->profilingData[$filterName] = [
|
|
'time' => $timeTaken,
|
|
'conds' => $condsUsed,
|
|
'result' => $result
|
|
];
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @param array $result Result of the execution, as created in run()
|
|
* @param string[] $matchedFilters
|
|
* @param string[] $allFilters
|
|
*/
|
|
protected function profileExecution( array $result, array $matchedFilters, array $allFilters ) {
|
|
$this->filterProfiler->checkResetProfiling( $this->group, $allFilters );
|
|
$this->filterProfiler->recordRuntimeProfilingResult(
|
|
count( $allFilters ),
|
|
$result['condCount'],
|
|
$result['runtime']
|
|
);
|
|
$this->filterProfiler->recordPerFilterProfiling( $this->title, $result['profiling'] );
|
|
$this->filterProfiler->recordStats(
|
|
$this->group,
|
|
$result['condCount'],
|
|
$result['runtime'],
|
|
(bool)$matchedFilters
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Executes a set of actions.
|
|
*
|
|
* @param string[] $filters
|
|
* @return Status returns the operation's status. $status->isOK() will return true if
|
|
* there were no actions taken, false otherwise. $status->getValue() will return
|
|
* an array listing the actions taken. $status->getErrors() etc. will provide
|
|
* the errors and warnings to be shown to the user to explain the actions.
|
|
*/
|
|
protected function executeFilterActions( array $filters ) : Status {
|
|
global $wgMainCacheType, $wgAbuseFilterLocallyDisabledGlobalActions,
|
|
$wgAbuseFilterBlockDuration, $wgAbuseFilterAnonBlockDuration;
|
|
|
|
$actionsByFilter = AbuseFilter::getConsequencesForFilters( $filters, false );
|
|
$actionsTaken = array_fill_keys( $filters, [] );
|
|
|
|
$messages = [];
|
|
// Accumulator to track max block to issue
|
|
$maxExpiry = -1;
|
|
|
|
foreach ( $actionsByFilter as $filter => $actions ) {
|
|
// Special-case handling for warnings.
|
|
$filterPublicComments = AbuseFilter::getFilter( $filter )->af_public_comments;
|
|
|
|
$isGlobalFilter = AbuseFilter::splitGlobalName( $filter )[1];
|
|
|
|
// If the filter has "throttle" enabled and throttling is available via object
|
|
// caching, check to see if the user has hit the throttle.
|
|
if ( isset( $actions['throttle'] ) && $wgMainCacheType !== CACHE_NONE ) {
|
|
$parameters = $actions['throttle'];
|
|
$throttleId = array_shift( $parameters );
|
|
list( $rateCount, $ratePeriod ) = explode( ',', array_shift( $parameters ) );
|
|
$rateCount = (int)$rateCount;
|
|
$ratePeriod = (int)$ratePeriod;
|
|
|
|
$hitThrottle = false;
|
|
|
|
// The rest are throttle-types.
|
|
foreach ( $parameters as $throttleType ) {
|
|
$hitThrottle = $hitThrottle || $this->isThrottled(
|
|
$throttleId, $throttleType, $rateCount, $ratePeriod, $isGlobalFilter );
|
|
}
|
|
|
|
unset( $actions['throttle'] );
|
|
if ( !$hitThrottle ) {
|
|
$actionsTaken[$filter][] = 'throttle';
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if ( $isGlobalFilter ) {
|
|
$actions = array_diff_key(
|
|
$actions,
|
|
array_filter( $wgAbuseFilterLocallyDisabledGlobalActions )
|
|
);
|
|
}
|
|
|
|
if ( isset( $actions['warn'] ) ) {
|
|
$parameters = $actions['warn'];
|
|
// Generate a unique key to determine whether the user has already been warned.
|
|
// We'll warn again if one of these changes: session, page, triggered filter or action
|
|
$warnKey = 'abusefilter-warned-' . md5( $this->title->getPrefixedText() ) .
|
|
'-' . $filter . '-' . $this->action;
|
|
|
|
// Make sure the session is started prior to using it
|
|
$session = SessionManager::getGlobalSession();
|
|
$session->persist();
|
|
|
|
if ( !isset( $session[$warnKey] ) || !$session[$warnKey] ) {
|
|
$session[$warnKey] = true;
|
|
|
|
$msg = $parameters[0] ?? 'abusefilter-warning';
|
|
$messages[] = [ $msg, $filterPublicComments, $filter ];
|
|
|
|
$actionsTaken[$filter][] = 'warn';
|
|
|
|
// Don't do anything else.
|
|
continue;
|
|
} else {
|
|
// We already warned them
|
|
$session[$warnKey] = false;
|
|
}
|
|
|
|
unset( $actions['warn'] );
|
|
}
|
|
|
|
// Don't show the disallow message if a blocking action is executed
|
|
if ( count( array_intersect( array_keys( $actions ), AbuseFilter::getDangerousActions() ) ) > 0
|
|
&& isset( $actions['disallow'] )
|
|
) {
|
|
unset( $actions['disallow'] );
|
|
}
|
|
|
|
// Find out the max expiry to issue the longest triggered block.
|
|
// Need to check here since methods like user->getBlock() aren't available
|
|
if ( isset( $actions['block'] ) ) {
|
|
$parameters = $actions['block'];
|
|
|
|
if ( count( $parameters ) === 3 ) {
|
|
// New type of filters with custom block
|
|
if ( $this->user->isAnon() ) {
|
|
$expiry = $parameters[1];
|
|
} else {
|
|
$expiry = $parameters[2];
|
|
}
|
|
} else {
|
|
// Old type with fixed expiry
|
|
if ( $this->user->isAnon() && $wgAbuseFilterAnonBlockDuration !== null ) {
|
|
// The user isn't logged in and the anon block duration
|
|
// doesn't default to $wgAbuseFilterBlockDuration.
|
|
$expiry = $wgAbuseFilterAnonBlockDuration;
|
|
} else {
|
|
$expiry = $wgAbuseFilterBlockDuration;
|
|
}
|
|
}
|
|
|
|
$currentExpiry = SpecialBlock::parseExpiryInput( $expiry );
|
|
if ( $maxExpiry === -1 || $currentExpiry > SpecialBlock::parseExpiryInput( $maxExpiry ) ) {
|
|
// Save the parameters to issue the block with
|
|
$maxExpiry = $expiry;
|
|
$blockValues = [
|
|
AbuseFilter::getFilter( $filter )->af_public_comments,
|
|
$filter,
|
|
is_array( $parameters ) && in_array( 'blocktalk', $parameters )
|
|
];
|
|
}
|
|
unset( $actions['block'] );
|
|
}
|
|
|
|
// Do the rest of the actions
|
|
foreach ( $actions as $action => $info ) {
|
|
$newMsg = $this->takeConsequenceAction(
|
|
$action,
|
|
$info,
|
|
AbuseFilter::getFilter( $filter )->af_public_comments,
|
|
$filter
|
|
);
|
|
|
|
if ( $newMsg !== null ) {
|
|
$messages[] = $newMsg;
|
|
}
|
|
$actionsTaken[$filter][] = $action;
|
|
}
|
|
}
|
|
|
|
// Since every filter has been analysed, we now know what the
|
|
// longest block duration is, so we can issue the block if
|
|
// maxExpiry has been changed.
|
|
if ( $maxExpiry !== -1 ) {
|
|
// @phan-suppress-next-line PhanTypeMismatchArgumentNullable
|
|
$this->doBlock( $blockValues[0], $blockValues[1], $maxExpiry, $blockValues[2] );
|
|
$message = [
|
|
'abusefilter-blocked-display',
|
|
$blockValues[0],
|
|
$blockValues[1]
|
|
];
|
|
// Manually add the message. If we're here, there is one.
|
|
$messages[] = $message;
|
|
// @phan-suppress-next-line PhanTypeMismatchDimAssignment
|
|
$actionsTaken[$blockValues[1]][] = 'block';
|
|
}
|
|
|
|
return $this->buildStatus( $actionsTaken, $messages );
|
|
}
|
|
|
|
/**
|
|
* @param string $throttleId
|
|
* @param string $types
|
|
* @param int $rateCount
|
|
* @param int $ratePeriod
|
|
* @param bool $global
|
|
* @return bool
|
|
*/
|
|
protected function isThrottled(
|
|
$throttleId,
|
|
$types,
|
|
int $rateCount,
|
|
int $ratePeriod,
|
|
$global = false
|
|
) {
|
|
$stash = MediaWikiServices::getInstance()->getMainObjectStash();
|
|
$key = $this->throttleKey( $throttleId, $types, $global );
|
|
$count = (int)$stash->get( $key );
|
|
|
|
$logger = LoggerFactory::getInstance( 'AbuseFilter' );
|
|
$logger->debug( "Got value $count for throttle key $key" );
|
|
|
|
$count = $stash->incrWithInit( $key, $ratePeriod );
|
|
|
|
if ( $count > $rateCount ) {
|
|
$logger->debug( "Throttle $key hit value $count -- maximum is $rateCount." );
|
|
return true;
|
|
}
|
|
$logger->debug( "Throttle $key not hit!" );
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string $throttleId
|
|
* @param string $type
|
|
* @param bool $global
|
|
* @return string
|
|
*/
|
|
protected function throttleKey( $throttleId, $type, $global = false ) {
|
|
global $wgAbuseFilterIsCentral, $wgAbuseFilterCentralDB;
|
|
|
|
$types = explode( ',', $type );
|
|
|
|
$identifiers = [];
|
|
|
|
foreach ( $types as $subtype ) {
|
|
$identifiers[] = $this->throttleIdentifier( $subtype );
|
|
}
|
|
|
|
$identifier = sha1( implode( ':', $identifiers ) );
|
|
|
|
$cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
|
|
if ( $global && !$wgAbuseFilterIsCentral ) {
|
|
return $cache->makeGlobalKey(
|
|
'abusefilter', 'throttle', $wgAbuseFilterCentralDB, $throttleId, $type, $identifier
|
|
);
|
|
}
|
|
|
|
return $cache->makeKey( 'abusefilter', 'throttle', $throttleId, $type, $identifier );
|
|
}
|
|
|
|
/**
|
|
* @param string $type
|
|
* @return int|string
|
|
*/
|
|
protected function throttleIdentifier( $type ) {
|
|
$request = RequestContext::getMain()->getRequest();
|
|
|
|
switch ( $type ) {
|
|
case 'ip':
|
|
$identifier = $request->getIP();
|
|
break;
|
|
case 'user':
|
|
$identifier = $this->user->getId();
|
|
break;
|
|
case 'range':
|
|
$identifier = substr( IPUtils::toHex( $request->getIP() ), 0, 4 );
|
|
break;
|
|
case 'creationdate':
|
|
$reg = (int)$this->user->getRegistration();
|
|
$identifier = $reg - ( $reg % 86400 );
|
|
break;
|
|
case 'editcount':
|
|
// Hack for detecting different single-purpose accounts.
|
|
$identifier = (int)$this->user->getEditCount();
|
|
break;
|
|
case 'site':
|
|
$identifier = 1;
|
|
break;
|
|
case 'page':
|
|
$identifier = $this->title->getPrefixedText();
|
|
break;
|
|
default:
|
|
// Should never happen
|
|
// @codeCoverageIgnoreStart
|
|
$identifier = 0;
|
|
// @codeCoverageIgnoreEnd
|
|
}
|
|
|
|
return $identifier;
|
|
}
|
|
|
|
/**
|
|
* @param string $action
|
|
* @param array $parameters
|
|
* @param string $ruleDescription
|
|
* @param int|string $ruleNumber
|
|
*
|
|
* @return array|null a message describing the action that was taken,
|
|
* or null if no action was taken. The message is given as an array
|
|
* containing the message key followed by any message parameters.
|
|
*/
|
|
protected function takeConsequenceAction( $action, $parameters, $ruleDescription, $ruleNumber ) {
|
|
global $wgAbuseFilterCustomActionsHandlers, $wgAbuseFilterBlockAutopromoteDuration;
|
|
|
|
$message = null;
|
|
|
|
switch ( $action ) {
|
|
case 'disallow':
|
|
$msg = $parameters[0] ?? 'abusefilter-disallowed';
|
|
$message = [ $msg, $ruleDescription, $ruleNumber ];
|
|
break;
|
|
case 'rangeblock':
|
|
$this->doRangeBlock( $ruleDescription, $ruleNumber, '1 week' );
|
|
|
|
$message = [
|
|
'abusefilter-blocked-display',
|
|
$ruleDescription,
|
|
$ruleNumber
|
|
];
|
|
break;
|
|
case 'degroup':
|
|
if ( !$this->user->isAnon() ) {
|
|
$userGroupsManager = MediaWikiServices::getInstance()->getUserGroupManager();
|
|
// Pull the groups from the VariableHolder, so that they will always be computed.
|
|
// This allow us to pull the groups from the VariableHolder to undo the degroup
|
|
// via Special:AbuseFilter/revert.
|
|
$groups = $this->vars->getVar( 'user_groups', AbuseFilterVariableHolder::GET_LAX );
|
|
if ( $groups->type !== AFPData::DARRAY ) {
|
|
// Somehow, the variable wasn't set
|
|
$groups = $userGroupsManager->getUserEffectiveGroups( $this->user );
|
|
$this->vars->setVar( 'user_groups', $groups );
|
|
} else {
|
|
$groups = $groups->toNative();
|
|
}
|
|
$this->vars->setVar( 'user_groups', $groups );
|
|
|
|
$implicitGroups = $userGroupsManager->listAllImplicitGroups();
|
|
$removeGroups = array_diff( $groups, $implicitGroups );
|
|
foreach ( $removeGroups as $group ) {
|
|
$userGroupsManager->removeUserFromGroup( $this->user, $group );
|
|
}
|
|
|
|
$message = [
|
|
'abusefilter-degrouped',
|
|
$ruleDescription,
|
|
$ruleNumber
|
|
];
|
|
|
|
// Don't log it if there aren't any groups being removed!
|
|
if ( !count( $removeGroups ) ) {
|
|
break;
|
|
}
|
|
|
|
// TODO Core should provide a logging method
|
|
$logEntry = new ManualLogEntry( 'rights', 'rights' );
|
|
$logEntry->setPerformer( AbuseFilter::getFilterUser() );
|
|
$logEntry->setTarget( $this->user->getUserPage() );
|
|
$logEntry->setComment(
|
|
wfMessage(
|
|
'abusefilter-degroupreason',
|
|
$ruleDescription,
|
|
$ruleNumber
|
|
)->inContentLanguage()->text()
|
|
);
|
|
$logEntry->setParameters( [
|
|
'4::oldgroups' => $removeGroups,
|
|
'5::newgroups' => []
|
|
] );
|
|
$logEntry->publish( $logEntry->insert() );
|
|
}
|
|
|
|
break;
|
|
case 'blockautopromote':
|
|
if ( !$this->user->isAnon() ) {
|
|
$duration = $wgAbuseFilterBlockAutopromoteDuration * 86400;
|
|
$store = AbuseFilterServices::getBlockAutopromoteStore();
|
|
$blocked = $store->blockAutoPromote(
|
|
$this->user,
|
|
wfMessage(
|
|
'abusefilter-blockautopromotereason',
|
|
$ruleDescription,
|
|
$ruleNumber
|
|
)->inContentLanguage()->text(),
|
|
$duration
|
|
);
|
|
|
|
if ( $blocked ) {
|
|
$message = [
|
|
'abusefilter-autopromote-blocked',
|
|
$ruleDescription,
|
|
$ruleNumber,
|
|
$duration
|
|
];
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'block':
|
|
// Do nothing, handled at the end of executeFilterActions. Here for completeness.
|
|
break;
|
|
|
|
case 'tag':
|
|
// Mark with a tag on recentchanges.
|
|
$this->changeTagger->addTags( $this->getSpecsForTagger(), $parameters );
|
|
break;
|
|
default:
|
|
if ( isset( $wgAbuseFilterCustomActionsHandlers[$action] ) ) {
|
|
$customFunction = $wgAbuseFilterCustomActionsHandlers[$action];
|
|
if ( is_callable( $customFunction ) ) {
|
|
$msg = call_user_func(
|
|
$customFunction,
|
|
$action,
|
|
$parameters,
|
|
$this->title,
|
|
$this->vars,
|
|
$ruleDescription,
|
|
$ruleNumber
|
|
);
|
|
}
|
|
if ( isset( $msg ) ) {
|
|
$message = [ $msg ];
|
|
}
|
|
} else {
|
|
$logger = LoggerFactory::getInstance( 'AbuseFilter' );
|
|
$logger->warning( "Unrecognised action $action" );
|
|
}
|
|
}
|
|
|
|
return $message;
|
|
}
|
|
|
|
/**
|
|
* @param string $ruleDesc
|
|
* @param string|int $ruleNumber
|
|
* @param string $expiry
|
|
*/
|
|
private function doRangeBlock( $ruleDesc, $ruleNumber, $expiry ) {
|
|
global $wgAbuseFilterRangeBlockSize, $wgBlockCIDRLimit;
|
|
|
|
$ip = RequestContext::getMain()->getRequest()->getIP();
|
|
$type = IPUtils::isIPv6( $ip ) ? 'IPv6' : 'IPv4';
|
|
$CIDRsize = max( $wgAbuseFilterRangeBlockSize[$type], $wgBlockCIDRLimit[$type] );
|
|
$blockCIDR = $ip . '/' . $CIDRsize;
|
|
|
|
$target = IPUtils::sanitizeRange( $blockCIDR );
|
|
$autoblock = false;
|
|
$this->doBlockInternal( $ruleDesc, $ruleNumber, $target, $expiry, $autoblock, false );
|
|
}
|
|
|
|
/**
|
|
* @param string $ruleDesc
|
|
* @param string|int $ruleNumber
|
|
* @param string $expiry
|
|
* @param bool $preventsTalk
|
|
*/
|
|
private function doBlock( $ruleDesc, $ruleNumber, $expiry, $preventsTalk ) {
|
|
$target = $this->user->getName();
|
|
$autoblock = true;
|
|
$this->doBlockInternal( $ruleDesc, $ruleNumber, $target, $expiry, $autoblock, $preventsTalk );
|
|
}
|
|
|
|
/**
|
|
* Perform a block by the AbuseFilter system user
|
|
* @param string $ruleDesc
|
|
* @param int|string $ruleNumber
|
|
* @param string $target
|
|
* @param string $expiry
|
|
* @param bool $isAutoBlock
|
|
* @param bool $preventEditOwnUserTalk
|
|
*/
|
|
private function doBlockInternal(
|
|
$ruleDesc,
|
|
$ruleNumber,
|
|
$target,
|
|
$expiry,
|
|
$isAutoBlock,
|
|
$preventEditOwnUserTalk
|
|
) {
|
|
$blockUserFactory = MediaWikiServices::getInstance()->getBlockUserFactory();
|
|
$filterUser = AbuseFilter::getFilterUser();
|
|
$reason = wfMessage(
|
|
'abusefilter-blockreason',
|
|
$ruleDesc, $ruleNumber
|
|
)->inContentLanguage()->text();
|
|
|
|
$blockUserFactory->newBlockUser(
|
|
$target,
|
|
$filterUser,
|
|
$expiry,
|
|
$reason,
|
|
[
|
|
'isHardBlock' => false,
|
|
'isAutoblocking' => $isAutoBlock,
|
|
'isCreateAccountBlocked' => true,
|
|
'isUserTalkEditBlocked' => $preventEditOwnUserTalk
|
|
]
|
|
)->placeBlockUnsafe();
|
|
}
|
|
|
|
/**
|
|
* Constructs a Status object as returned by executeFilterActions() from the list of
|
|
* actions taken and the corresponding list of messages.
|
|
*
|
|
* @param array[] $actionsTaken associative array mapping each filter to the list if
|
|
* actions taken because of that filter.
|
|
* @param array[] $messages a list of arrays, where each array contains a message key
|
|
* followed by any message parameters.
|
|
*
|
|
* @return Status
|
|
*/
|
|
protected function buildStatus( array $actionsTaken, array $messages ) : Status {
|
|
$status = Status::newGood( $actionsTaken );
|
|
|
|
foreach ( $messages as $msg ) {
|
|
$status->fatal( ...$msg );
|
|
}
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Creates a template to use for logging taken actions
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function buildLogTemplate() : array {
|
|
global $wgAbuseFilterLogIP;
|
|
|
|
$request = RequestContext::getMain()->getRequest();
|
|
// If $this->user isn't safe to load (e.g. a failure during
|
|
// AbortAutoAccount), create a dummy anonymous user instead.
|
|
$user = $this->user->isSafeToLoad() ? $this->user : new User;
|
|
// Create a template
|
|
$logTemplate = [
|
|
'afl_user' => $user->getId(),
|
|
'afl_user_text' => $user->getName(),
|
|
'afl_timestamp' => wfGetDB( DB_REPLICA )->timestamp(),
|
|
'afl_namespace' => $this->title->getNamespace(),
|
|
'afl_title' => $this->title->getDBkey(),
|
|
'afl_action' => $this->action,
|
|
'afl_ip' => $wgAbuseFilterLogIP ? $request->getIP() : ''
|
|
];
|
|
// Hack to avoid revealing IPs of people creating accounts
|
|
if (
|
|
!$user->getId() &&
|
|
( $this->action === 'createaccount' || $this->action === 'autocreateaccount' )
|
|
) {
|
|
$logTemplate['afl_user_text'] = $this->vars->getVar( 'accountname' )->toString();
|
|
}
|
|
return $logTemplate;
|
|
}
|
|
|
|
/**
|
|
* Create and publish log entries for taken actions
|
|
*
|
|
* @param array[] $actionsTaken
|
|
* @todo Split this method
|
|
*/
|
|
protected function addLogEntries( array $actionsTaken ) {
|
|
$dbw = wfGetDB( DB_MASTER );
|
|
$logTemplate = $this->buildLogTemplate();
|
|
$centralLogTemplate = [
|
|
'afl_wiki' => WikiMap::getCurrentWikiDbDomain()->getId(),
|
|
];
|
|
|
|
$logRows = [];
|
|
$centralLogRows = [];
|
|
$loggedLocalFilters = [];
|
|
$loggedGlobalFilters = [];
|
|
|
|
foreach ( $actionsTaken as $filter => $actions ) {
|
|
list( $filterID, $global ) = AbuseFilter::splitGlobalName( $filter );
|
|
$thisLog = $logTemplate;
|
|
$thisLog['afl_filter'] = $filter;
|
|
$thisLog['afl_actions'] = implode( ',', $actions );
|
|
|
|
// Don't log if we were only throttling.
|
|
if ( $thisLog['afl_actions'] !== 'throttle' ) {
|
|
$logRows[] = $thisLog;
|
|
// Global logging
|
|
if ( $global ) {
|
|
$centralLog = $thisLog + $centralLogTemplate;
|
|
$centralLog['afl_filter'] = $filterID;
|
|
$centralLog['afl_title'] = $this->title->getPrefixedText();
|
|
$centralLog['afl_namespace'] = 0;
|
|
|
|
$centralLogRows[] = $centralLog;
|
|
$loggedGlobalFilters[] = $filterID;
|
|
} else {
|
|
$loggedLocalFilters[] = $filter;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( !count( $logRows ) ) {
|
|
return;
|
|
}
|
|
|
|
// Only store the var dump if we're actually going to add log rows.
|
|
$varDump = AbuseFilter::storeVarDump( $this->vars );
|
|
$varDump = "tt:$varDump";
|
|
|
|
$localLogIDs = [];
|
|
global $wgAbuseFilterNotifications, $wgAbuseFilterNotificationsPrivate;
|
|
foreach ( $logRows as $data ) {
|
|
$data['afl_var_dump'] = $varDump;
|
|
$dbw->insert( 'abuse_filter_log', $data, __METHOD__ );
|
|
$localLogIDs[] = $data['afl_id'] = $dbw->insertId();
|
|
// Give grep a chance to find the usages:
|
|
// logentry-abusefilter-hit
|
|
$entry = new ManualLogEntry( 'abusefilter', 'hit' );
|
|
// Construct a user object
|
|
$user = User::newFromId( $data['afl_user'] );
|
|
$user->setName( $data['afl_user_text'] );
|
|
$entry->setPerformer( $user );
|
|
$entry->setTarget( $this->title );
|
|
// Additional info
|
|
$entry->setParameters( [
|
|
'action' => $data['afl_action'],
|
|
'filter' => $data['afl_filter'],
|
|
'actions' => $data['afl_actions'],
|
|
'log' => $data['afl_id'],
|
|
] );
|
|
|
|
// Send data to CheckUser if installed and we
|
|
// aren't already sending a notification to recentchanges
|
|
if ( ExtensionRegistry::getInstance()->isLoaded( 'CheckUser' )
|
|
&& strpos( $wgAbuseFilterNotifications, 'rc' ) === false
|
|
) {
|
|
global $wgCheckUserLogAdditionalRights;
|
|
$wgCheckUserLogAdditionalRights[] = 'abusefilter-view';
|
|
$rc = $entry->getRecentChange();
|
|
CheckUserHooks::updateCheckUserData( $rc );
|
|
}
|
|
|
|
if ( $wgAbuseFilterNotifications !== false ) {
|
|
list( $filterID, $global ) = AbuseFilter::splitGlobalName( $data['afl_filter'] );
|
|
if ( AbuseFilter::filterHidden( $filterID, $global ) && !$wgAbuseFilterNotificationsPrivate ) {
|
|
continue;
|
|
}
|
|
$this->publishEntry( $dbw, $entry, $wgAbuseFilterNotifications );
|
|
}
|
|
}
|
|
|
|
$method = __METHOD__;
|
|
|
|
if ( count( $loggedLocalFilters ) ) {
|
|
// Update hit-counter.
|
|
$dbw->onTransactionPreCommitOrIdle(
|
|
function () use ( $dbw, $loggedLocalFilters, $method ) {
|
|
$dbw->update( 'abuse_filter',
|
|
[ 'af_hit_count=af_hit_count+1' ],
|
|
[ 'af_id' => $loggedLocalFilters ],
|
|
$method
|
|
);
|
|
},
|
|
$method
|
|
);
|
|
}
|
|
|
|
$globalLogIDs = [];
|
|
|
|
// Global stuff
|
|
if ( count( $loggedGlobalFilters ) ) {
|
|
$this->vars->computeDBVars();
|
|
$globalVarDump = AbuseFilter::storeVarDump( $this->vars, true );
|
|
$globalVarDump = "tt:$globalVarDump";
|
|
foreach ( $centralLogRows as $index => $data ) {
|
|
$centralLogRows[$index]['afl_var_dump'] = $globalVarDump;
|
|
}
|
|
|
|
$fdb = AbuseFilter::getCentralDB( DB_MASTER );
|
|
|
|
foreach ( $centralLogRows as $row ) {
|
|
$fdb->insert( 'abuse_filter_log', $row, __METHOD__ );
|
|
$globalLogIDs[] = $fdb->insertId();
|
|
}
|
|
|
|
$fdb->onTransactionPreCommitOrIdle(
|
|
function () use ( $fdb, $loggedGlobalFilters, $method ) {
|
|
$fdb->update( 'abuse_filter',
|
|
[ 'af_hit_count=af_hit_count+1' ],
|
|
[ 'af_id' => $loggedGlobalFilters ],
|
|
$method
|
|
);
|
|
},
|
|
$method
|
|
);
|
|
}
|
|
|
|
AbuseFilter::$logIds[ $this->title->getPrefixedText() ] = [
|
|
'local' => $localLogIDs,
|
|
'global' => $globalLogIDs
|
|
];
|
|
|
|
$this->checkEmergencyDisable( $loggedLocalFilters );
|
|
}
|
|
|
|
/**
|
|
* Like LogEntry::publish, but doesn't require an ID (which we don't have) and skips the
|
|
* tagging part
|
|
*
|
|
* @param IDatabase $dbw To cancel the callback if the log insertion fails
|
|
* @param ManualLogEntry $entry
|
|
* @param string $to One of 'udp', 'rc' and 'rcandudp'
|
|
*/
|
|
private function publishEntry( IDatabase $dbw, ManualLogEntry $entry, $to ) {
|
|
DeferredUpdates::addCallableUpdate(
|
|
function () use ( $entry, $to ) {
|
|
$rc = $entry->getRecentChange();
|
|
|
|
if ( $to === 'rc' || $to === 'rcandudp' ) {
|
|
$rc->save( $rc::SEND_NONE );
|
|
}
|
|
if ( $to === 'udp' || $to === 'rcandudp' ) {
|
|
$rc->notifyRCFeeds();
|
|
}
|
|
},
|
|
DeferredUpdates::POSTSEND,
|
|
$dbw
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a filter must be throttled, i.e. its potentially dangerous
|
|
* actions must be disabled.
|
|
*
|
|
* @param string[] $filters The filters to check
|
|
*/
|
|
protected function checkEmergencyDisable( array $filters ) {
|
|
// @ToDo this is an amount between 1 and AbuseFilterProfileActionsCap, which means that the
|
|
// reliability of this number may strongly vary. We should instead use a fixed one.
|
|
$groupProfile = $this->filterProfiler->getGroupProfile( $this->group );
|
|
$totalActions = $groupProfile['total'];
|
|
|
|
foreach ( $filters as $filter ) {
|
|
$threshold = AbuseFilter::getEmergencyValue( 'threshold', $this->group );
|
|
$hitCountLimit = AbuseFilter::getEmergencyValue( 'count', $this->group );
|
|
$maxAge = AbuseFilter::getEmergencyValue( 'age', $this->group );
|
|
|
|
$filterProfile = $this->filterProfiler->getFilterProfile( $filter );
|
|
// xxx: should this increment be here?
|
|
$matchCount = $filterProfile['matches'] + 1;
|
|
|
|
// Figure out if the filter is subject to being throttled.
|
|
$filterAge = (int)wfTimestamp( TS_UNIX, AbuseFilter::getFilter( $filter )->af_timestamp );
|
|
$exemptTime = $filterAge + $maxAge;
|
|
|
|
if ( $totalActions && $exemptTime > time() && $matchCount > $hitCountLimit &&
|
|
( $matchCount / $totalActions ) > $threshold
|
|
) {
|
|
// More than $wgAbuseFilterEmergencyDisableCount matches, constituting more than
|
|
// $threshold (a fraction) of last few edits. Disable it.
|
|
DeferredUpdates::addUpdate(
|
|
new AutoCommitUpdate(
|
|
wfGetDB( DB_MASTER ),
|
|
__METHOD__,
|
|
function ( IDatabase $dbw, $fname ) use ( $filter ) {
|
|
$dbw->update(
|
|
'abuse_filter',
|
|
[ 'af_throttled' => 1 ],
|
|
[ 'af_id' => $filter ],
|
|
$fname
|
|
);
|
|
}
|
|
)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
private function getSpecsForTagger() : array {
|
|
return [
|
|
'action' => $this->action,
|
|
'username' => $this->user->getName(),
|
|
'target' => $this->title,
|
|
'accountname' => $this->vars->getVar(
|
|
'accountname',
|
|
AbuseFilterVariableHolder::GET_BC
|
|
)->toNative()
|
|
];
|
|
}
|
|
}
|