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<?php
namespace MediaWiki\Extension\AbuseFilter\View;
use MediaWiki\Context\IContextSource;
use MediaWiki\Exception\PermissionsError;
use MediaWiki\Exception\UserBlockedError;
use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager;
use MediaWiki\Extension\AbuseFilter\ActionSpecifier;
use MediaWiki\Extension\AbuseFilter\Consequences\Consequence\ReversibleConsequence;
use MediaWiki\Extension\AbuseFilter\Consequences\ConsequencesFactory;
use MediaWiki\Extension\AbuseFilter\Consequences\Parameters;
use MediaWiki\Extension\AbuseFilter\FilterLookup;
use MediaWiki\Extension\AbuseFilter\SpecsFormatter;
use MediaWiki\Extension\AbuseFilter\Variables\UnsetVariableException;
use MediaWiki\Extension\AbuseFilter\Variables\VariablesBlobStore;
use MediaWiki\Html\Html;
use MediaWiki\HTMLForm\HTMLForm;
use MediaWiki\Linker\Linker;
use MediaWiki\Linker\LinkRenderer;
use MediaWiki\Message\Message;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Title\TitleValue;
use MediaWiki\User\UserFactory;
use UnexpectedValueException;
use Wikimedia\Rdbms\LBFactory;
use Wikimedia\Rdbms\SelectQueryBuilder;
class AbuseFilterViewRevert extends AbuseFilterView {
/** @var int */
private $filter;
/**
* @var string|null The start time of the lookup period
*/
private $periodStart;
/**
* @var string|null The end time of the lookup period
*/
private $periodEnd;
/**
* @var string|null The reason provided for the revert
*/
private $reason;
/**
* @var LBFactory
*/
private $lbFactory;
/**
* @var UserFactory
*/
private $userFactory;
/**
* @var FilterLookup
*/
private $filterLookup;
/**
* @var ConsequencesFactory
*/
private $consequencesFactory;
/**
* @var VariablesBlobStore
*/
private $varBlobStore;
/**
* @var SpecsFormatter
*/
private $specsFormatter;
/**
* @param LBFactory $lbFactory
* @param UserFactory $userFactory
* @param AbuseFilterPermissionManager $afPermManager
* @param FilterLookup $filterLookup
* @param ConsequencesFactory $consequencesFactory
* @param VariablesBlobStore $varBlobStore
* @param SpecsFormatter $specsFormatter
* @param IContextSource $context
* @param LinkRenderer $linkRenderer
* @param string $basePageName
* @param array $params
*/
public function __construct(
LBFactory $lbFactory,
UserFactory $userFactory,
AbuseFilterPermissionManager $afPermManager,
FilterLookup $filterLookup,
ConsequencesFactory $consequencesFactory,
VariablesBlobStore $varBlobStore,
SpecsFormatter $specsFormatter,
IContextSource $context,
LinkRenderer $linkRenderer,
string $basePageName,
array $params
) {
parent::__construct( $afPermManager, $context, $linkRenderer, $basePageName, $params );
$this->lbFactory = $lbFactory;
$this->userFactory = $userFactory;
$this->filterLookup = $filterLookup;
$this->consequencesFactory = $consequencesFactory;
$this->varBlobStore = $varBlobStore;
$this->specsFormatter = $specsFormatter;
$this->specsFormatter->setMessageLocalizer( $this->getContext() );
}
/**
* Shows the page
*/
public function show() {
$lang = $this->getLanguage();
$performer = $this->getAuthority();
$out = $this->getOutput();
if ( !$this->afPermManager->canRevertFilterActions( $performer ) ) {
throw new PermissionsError( 'abusefilter-revert' );
}
$block = $performer->getBlock();
if ( $block && $block->isSitewide() ) {
throw new UserBlockedError( $block );
}
$this->loadParameters();
if ( $this->attemptRevert() ) {
return;
}
$filter = $this->filter;
$out->addWikiMsg( 'abusefilter-revert-intro', Message::numParam( $filter ) );
// Parse wikitext in this message to allow formatting of numero signs (T343994#9209383)
$out->setPageTitle( $this->msg( 'abusefilter-revert-title' )->numParams( $filter )->parse() );
// First, the search form. Limit dates to avoid huge queries
$RCMaxAge = $this->getConfig()->get( 'RCMaxAge' );
$min = wfTimestamp( TS_ISO_8601, time() - $RCMaxAge );
$max = wfTimestampNow();
$filterLink =
$this->linkRenderer->makeLink(
$this->getTitle( $filter ),
$lang->formatNum( $filter )
);
$searchFields = [];
$searchFields['filterid'] = [
'type' => 'info',
'default' => $filterLink,
'raw' => true,
'label-message' => 'abusefilter-revert-filter'
];
$searchFields['PeriodStart'] = [
'type' => 'datetime',
'label-message' => 'abusefilter-revert-periodstart',
'min' => $min,
'max' => $max
];
$searchFields['PeriodEnd'] = [
'type' => 'datetime',
'label-message' => 'abusefilter-revert-periodend',
'min' => $min,
'max' => $max
];
HTMLForm::factory( 'ooui', $searchFields, $this->getContext() )
->setTitle( $this->getTitle( "revert/$filter" ) )
->setWrapperLegendMsg( 'abusefilter-revert-search-legend' )
->setSubmitTextMsg( 'abusefilter-revert-search' )
->setMethod( 'get' )
->setFormIdentifier( 'revert-select-date' )
->setSubmitCallback( [ $this, 'showRevertableActions' ] )
->showAlways();
}
/**
* Show revertable actions, called as submit callback by HTMLForm
* @param array $formData
* @param HTMLForm $dateForm
* @return bool
*/
public function showRevertableActions( array $formData, HTMLForm $dateForm ): bool {
$lang = $this->getLanguage();
$user = $this->getUser();
$filter = $this->filter;
// Look up all of them.
$results = $this->doLookup();
if ( $results === [] ) {
$dateForm->addPostHtml( $this->msg( 'abusefilter-revert-preview-no-results' )->escaped() );
return true;
}
// Add a summary of everything that will be reversed.
$dateForm->addPostHtml( $this->msg( 'abusefilter-revert-preview-intro' )->parseAsBlock() );
$list = [];
foreach ( $results as $result ) {
$displayActions = [];
foreach ( $result['actions'] as $action ) {
$displayActions[] = $this->specsFormatter->getActionDisplay( $action );
}
/** @var ActionSpecifier $spec */
$spec = $result['spec'];
$msg = $this->msg( 'abusefilter-revert-preview-item' )
->params(
$lang->userTimeAndDate( $result['timestamp'], $user )
)->rawParams(
Linker::userLink( $spec->getUser()->getId(), $spec->getUser()->getName() )
)->params(
$spec->getAction()
)->rawParams(
$this->linkRenderer->makeLink( $spec->getTitle() )
)->params(
$lang->commaList( $displayActions )
)->rawParams(
$this->linkRenderer->makeLink(
SpecialPage::getTitleFor( 'AbuseLog' ),
$this->msg( 'abusefilter-log-detailslink' )->text(),
[],
[ 'details' => $result['id'] ]
)
)->params(
$spec->getUser()->getName()
)->parse();
$list[] = Html::rawElement( 'li', [], $msg );
}
$dateForm->addPostHtml( Html::rawElement( 'ul', [], implode( "\n", $list ) ) );
// Add a button down the bottom.
$confirmForm = [];
$confirmForm['PeriodStart'] = [
'type' => 'hidden',
];
$confirmForm['PeriodEnd'] = [
'type' => 'hidden',
];
$confirmForm['Reason'] = [
'type' => 'text',
'label-message' => 'abusefilter-revert-reasonfield',
'id' => 'wpReason',
];
$revertForm = HTMLForm::factory( 'ooui', $confirmForm, $this->getContext() )
->setTitle( $this->getTitle( "revert/$filter" ) )
->setTokenSalt( "abusefilter-revert-$filter" )
->setWrapperLegendMsg( 'abusefilter-revert-confirm-legend' )
->setSubmitTextMsg( 'abusefilter-revert-confirm' )
->prepareForm()
->getHTML( true );
$dateForm->addPostHtml( $revertForm );
return true;
}
/**
* @return array[]
*/
public function doLookup() {
$periodStart = $this->periodStart;
$periodEnd = $this->periodEnd;
$filter = $this->filter;
$dbr = $this->lbFactory->getReplicaDatabase();
// Only hits from local filters can be reverted
$conds = [ 'afl_filter_id' => $filter, 'afl_global' => 0 ];
if ( $periodStart !== null ) {
$conds[] = $dbr->expr( 'afl_timestamp', '>=', $dbr->timestamp( $periodStart ) );
}
if ( $periodEnd !== null ) {
$conds[] = $dbr->expr( 'afl_timestamp', '<=', $dbr->timestamp( $periodEnd ) );
}
// Don't revert if there was no action, or the action was global
$conds[] = $dbr->expr( 'afl_actions', '!=', '' );
$conds['afl_wiki'] = null;
$selectFields = [
'afl_id',
'afl_user',
'afl_user_text',
'afl_ip',
'afl_action',
'afl_actions',
'afl_var_dump',
'afl_timestamp',
'afl_namespace',
'afl_title',
];
$res = $dbr->newSelectQueryBuilder()
->select( $selectFields )
->from( 'abuse_filter_log' )
->where( $conds )
->caller( __METHOD__ )
->orderBy( 'afl_timestamp', SelectQueryBuilder::SORT_DESC )
->fetchResultSet();
// TODO: get the following from ConsequencesRegistry or sth else
static $reversibleActions = [ 'block', 'blockautopromote', 'degroup' ];
$results = [];
foreach ( $res as $row ) {
$actions = explode( ',', $row->afl_actions );
$currentReversibleActions = array_intersect( $actions, $reversibleActions );
if ( count( $currentReversibleActions ) ) {
$vars = $this->varBlobStore->loadVarDump( $row );
try {
// The variable is not lazy-loaded
$accountName = $vars->getComputedVariable( 'accountname' )->toNative();
} catch ( UnsetVariableException $_ ) {
$accountName = null;
}
$results[] = [
'id' => $row->afl_id,
'actions' => $currentReversibleActions,
'vars' => $vars,
'spec' => new ActionSpecifier(
$row->afl_action,
new TitleValue( (int)$row->afl_namespace, $row->afl_title ),
$this->userFactory->newFromAnyId( (int)$row->afl_user, $row->afl_user_text ),
$row->afl_ip,
$accountName
),
'timestamp' => $row->afl_timestamp
];
}
}
return $results;
}
/**
* Loads parameters from request
*/
public function loadParameters() {
$request = $this->getRequest();
$this->filter = (int)$this->mParams[1];
$this->periodStart = strtotime( $request->getText( 'wpPeriodStart' ) ) ?: null;
$this->periodEnd = strtotime( $request->getText( 'wpPeriodEnd' ) ) ?: null;
$this->reason = $request->getVal( 'wpReason' );
}
/**
* @return bool
*/
public function attemptRevert() {
$filter = $this->filter;
$token = $this->getRequest()->getVal( 'wpEditToken' );
if ( !$this->getCsrfTokenSet()->matchToken( $token, "abusefilter-revert-$filter" ) ) {
return false;
}
$results = $this->doLookup();
foreach ( $results as $result ) {
foreach ( $result['actions'] as $action ) {
$this->revertAction( $action, $result );
}
}
$this->getOutput()->addModuleStyles( 'mediawiki.codex.messagebox.styles' );
$this->getOutput()->addHTML( Html::successBox(
$this->msg(
'abusefilter-revert-success',
$filter,
$this->getLanguage()->formatNum( $filter )
)->parse()
) );
return true;
}
/**
* Helper method for typing
* @param string $action
* @param array $result
* @return ReversibleConsequence
*/
private function getConsequence( string $action, array $result ): ReversibleConsequence {
$params = new Parameters(
$this->filterLookup->getFilter( $this->filter, false ),
false,
$result['spec']
);
switch ( $action ) {
case 'block':
return $this->consequencesFactory->newBlock( $params, '', false );
case 'blockautopromote':
$duration = $this->getConfig()->get( 'AbuseFilterBlockAutopromoteDuration' ) * 86400;
return $this->consequencesFactory->newBlockAutopromote( $params, $duration );
case 'degroup':
return $this->consequencesFactory->newDegroup( $params, $result['vars'] );
default:
throw new UnexpectedValueException( "Invalid action $action" );
}
}
/**
* @param string $action
* @param array $result
* @return bool
*/
public function revertAction( string $action, array $result ): bool {
$message = $this->msg(
'abusefilter-revert-reason', $this->filter, $this->reason
)->inContentLanguage()->text();
$consequence = $this->getConsequence( $action, $result );
return $consequence->revert( $this->getAuthority(), $message );
}
}