mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/AbuseFilter.git
synced 2024-12-22 02:12:45 +00:00
05da3118aa
Why: - For account creations and account autocreations, the user_name property is deliberately unset, to avoid displaying the IP address of an unregistered user. Instead, `accountname` is set with the newly created account name - For logging that someone has seen a protected variable value, we need to record the username that was seen What: - Use `accountname` as a fallback in case `user_name` is not set, when logging protected variable access - Update tests to cover this case. Bug: T376885 Change-Id: I688a3529fac0ad8455977a0cfdb950f0105f550d
413 lines
13 KiB
PHP
413 lines
13 KiB
PHP
<?php
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namespace MediaWiki\Extension\AbuseFilter\View;
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use ChangesList;
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use LogicException;
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use MediaWiki\Context\IContextSource;
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use MediaWiki\Extension\AbuseFilter\AbuseFilterChangesList;
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use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager;
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use MediaWiki\Extension\AbuseFilter\AbuseLoggerFactory;
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use MediaWiki\Extension\AbuseFilter\CentralDBNotAvailableException;
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use MediaWiki\Extension\AbuseFilter\EditBox\EditBoxBuilderFactory;
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use MediaWiki\Extension\AbuseFilter\Filter\Flags;
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use MediaWiki\Extension\AbuseFilter\FilterLookup;
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use MediaWiki\Extension\AbuseFilter\FilterUtils;
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use MediaWiki\Extension\AbuseFilter\Pager\AbuseFilterExaminePager;
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use MediaWiki\Extension\AbuseFilter\Special\SpecialAbuseLog;
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use MediaWiki\Extension\AbuseFilter\VariableGenerator\VariableGeneratorFactory;
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use MediaWiki\Extension\AbuseFilter\Variables\VariableHolder;
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use MediaWiki\Extension\AbuseFilter\Variables\VariablesBlobStore;
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use MediaWiki\Extension\AbuseFilter\Variables\VariablesFormatter;
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use MediaWiki\Extension\AbuseFilter\Variables\VariablesManager;
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use MediaWiki\Html\Html;
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use MediaWiki\HTMLForm\HTMLForm;
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use MediaWiki\Linker\LinkRenderer;
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use MediaWiki\Revision\RevisionRecord;
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use MediaWiki\Title\Title;
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use OOUI;
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use RecentChange;
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use Wikimedia\Rdbms\LBFactory;
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class AbuseFilterViewExamine extends AbuseFilterView {
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/**
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* @var string The rules of the filter we're examining
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*/
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private $testFilter;
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/**
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* @var LBFactory
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*/
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private $lbFactory;
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/**
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* @var FilterLookup
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*/
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private $filterLookup;
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/**
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* @var EditBoxBuilderFactory
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*/
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private $boxBuilderFactory;
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/**
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* @var VariablesBlobStore
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*/
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private $varBlobStore;
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/**
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* @var VariablesFormatter
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*/
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private $variablesFormatter;
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/**
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* @var VariablesManager
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*/
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private $varManager;
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/**
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* @var VariableGeneratorFactory
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*/
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private $varGeneratorFactory;
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private AbuseLoggerFactory $abuseLoggerFactory;
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/**
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* @param LBFactory $lbFactory
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* @param AbuseFilterPermissionManager $afPermManager
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* @param FilterLookup $filterLookup
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* @param EditBoxBuilderFactory $boxBuilderFactory
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* @param VariablesBlobStore $varBlobStore
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* @param VariablesFormatter $variablesFormatter
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* @param VariablesManager $varManager
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* @param VariableGeneratorFactory $varGeneratorFactory
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* @param AbuseLoggerFactory $abuseLoggerFactory
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* @param IContextSource $context
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* @param LinkRenderer $linkRenderer
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* @param string $basePageName
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* @param array $params
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*/
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public function __construct(
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LBFactory $lbFactory,
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AbuseFilterPermissionManager $afPermManager,
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FilterLookup $filterLookup,
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EditBoxBuilderFactory $boxBuilderFactory,
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VariablesBlobStore $varBlobStore,
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VariablesFormatter $variablesFormatter,
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VariablesManager $varManager,
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VariableGeneratorFactory $varGeneratorFactory,
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AbuseLoggerFactory $abuseLoggerFactory,
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IContextSource $context,
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LinkRenderer $linkRenderer,
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string $basePageName,
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array $params
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) {
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parent::__construct( $afPermManager, $context, $linkRenderer, $basePageName, $params );
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$this->lbFactory = $lbFactory;
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$this->filterLookup = $filterLookup;
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$this->boxBuilderFactory = $boxBuilderFactory;
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$this->varBlobStore = $varBlobStore;
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$this->variablesFormatter = $variablesFormatter;
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$this->variablesFormatter->setMessageLocalizer( $context );
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$this->varManager = $varManager;
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$this->varGeneratorFactory = $varGeneratorFactory;
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$this->abuseLoggerFactory = $abuseLoggerFactory;
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}
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/**
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* Shows the page
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*/
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public function show() {
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$out = $this->getOutput();
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$out->setPageTitleMsg( $this->msg( 'abusefilter-examine' ) );
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$out->addHelpLink( 'Extension:AbuseFilter/Rules format' );
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if ( $this->afPermManager->canUseTestTools( $this->getAuthority() ) ) {
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$out->addWikiMsg( 'abusefilter-examine-intro' );
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} else {
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$out->addWikiMsg( 'abusefilter-examine-intro-examine-only' );
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}
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$this->testFilter = $this->getRequest()->getText( 'testfilter' );
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// Check if we've got a subpage
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if ( count( $this->mParams ) > 1 && is_numeric( $this->mParams[1] ) ) {
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$this->showExaminerForRC( $this->mParams[1] );
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} elseif ( count( $this->mParams ) > 2
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&& $this->mParams[1] === 'log'
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&& is_numeric( $this->mParams[2] )
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) {
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$this->showExaminerForLogEntry( $this->mParams[2] );
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} else {
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$this->showSearch();
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}
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}
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/**
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* Shows the search form
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*/
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public function showSearch() {
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$RCMaxAge = $this->getConfig()->get( 'RCMaxAge' );
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$min = wfTimestamp( TS_ISO_8601, time() - $RCMaxAge );
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$max = wfTimestampNow();
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$formDescriptor = [
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'SearchUser' => [
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'label-message' => 'abusefilter-test-user',
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'type' => 'user',
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'ipallowed' => true,
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],
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'SearchPeriodStart' => [
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'label-message' => 'abusefilter-test-period-start',
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'type' => 'datetime',
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'min' => $min,
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'max' => $max,
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],
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'SearchPeriodEnd' => [
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'label-message' => 'abusefilter-test-period-end',
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'type' => 'datetime',
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'min' => $min,
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'max' => $max,
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],
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];
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HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() )
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->addHiddenField( 'testfilter', $this->testFilter )
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->setWrapperLegendMsg( 'abusefilter-examine-legend' )
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->setSubmitTextMsg( 'abusefilter-examine-submit' )
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->setSubmitCallback( [ $this, 'showResults' ] )
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->showAlways();
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}
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/**
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* Show search results, called as submit callback by HTMLForm
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* @param array $formData
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* @param HTMLForm $form
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* @return bool
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*/
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public function showResults( array $formData, HTMLForm $form ): bool {
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$changesList = new AbuseFilterChangesList( $this->getContext(), $this->testFilter );
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$dbr = $this->lbFactory->getReplicaDatabase();
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$conds = $this->buildVisibilityConditions( $dbr, $this->getAuthority() );
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$conds[] = $this->buildTestConditions( $dbr );
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// Normalise username
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$userTitle = Title::newFromText( $formData['SearchUser'], NS_USER );
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$userName = $userTitle ? $userTitle->getText() : '';
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if ( $userName !== '' ) {
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$rcQuery = RecentChange::getQueryInfo();
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$conds[$rcQuery['fields']['rc_user_text']] = $userName;
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}
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$startTS = strtotime( $formData['SearchPeriodStart'] );
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if ( $startTS ) {
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$conds[] = $dbr->expr( 'rc_timestamp', '>=', $dbr->timestamp( $startTS ) );
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}
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$endTS = strtotime( $formData['SearchPeriodEnd'] );
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if ( $endTS ) {
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$conds[] = $dbr->expr( 'rc_timestamp', '<=', $dbr->timestamp( $endTS ) );
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}
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$pager = new AbuseFilterExaminePager(
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$changesList,
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$this->linkRenderer,
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$dbr,
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$this->getTitle( 'examine' ),
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$conds
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);
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$output = $changesList->beginRecentChangesList()
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. $pager->getNavigationBar()
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. $pager->getBody()
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. $pager->getNavigationBar()
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. $changesList->endRecentChangesList();
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$form->addPostHtml( $output );
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return true;
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}
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/**
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* @param int $rcid
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*/
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public function showExaminerForRC( $rcid ) {
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// Get data
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$rc = RecentChange::newFromId( $rcid );
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$out = $this->getOutput();
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if ( !$rc ) {
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$out->addWikiMsg( 'abusefilter-examine-notfound' );
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return;
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}
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if ( !ChangesList::userCan( $rc, RevisionRecord::SUPPRESSED_ALL ) ) {
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$out->addWikiMsg( 'abusefilter-log-details-hidden-implicit' );
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return;
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}
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$varGenerator = $this->varGeneratorFactory->newRCGenerator( $rc, $this->getUser() );
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$vars = $varGenerator->getVars() ?: new VariableHolder();
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$out->addJsConfigVars( [
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'wgAbuseFilterVariables' => $this->varManager->dumpAllVars( $vars, true ),
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'abuseFilterExamine' => [ 'type' => 'rc', 'id' => $rcid ]
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] );
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$this->showExaminer( $vars );
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}
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/**
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* @param int $logid
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*/
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public function showExaminerForLogEntry( $logid ) {
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// Get data
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$dbr = $this->lbFactory->getReplicaDatabase();
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$performer = $this->getAuthority();
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$out = $this->getOutput();
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$row = $dbr->newSelectQueryBuilder()
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->select( [
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'afl_deleted',
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'afl_ip',
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'afl_var_dump',
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'afl_rev_id',
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'afl_filter_id',
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'afl_global'
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] )
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->from( 'abuse_filter_log' )
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->where( [ 'afl_id' => $logid ] )
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->caller( __METHOD__ )
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->fetchRow();
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if ( !$row ) {
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$out->addWikiMsg( 'abusefilter-examine-notfound' );
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return;
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}
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try {
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$privacyLevel = $this->filterLookup->getFilter( $row->afl_filter_id, $row->afl_global )->getPrivacyLevel();
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} catch ( CentralDBNotAvailableException $_ ) {
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// Conservatively assume that it's hidden and protected, like in AbuseLogPager::doFormatRow
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$privacyLevel = Flags::FILTER_HIDDEN & Flags::FILTER_USES_PROTECTED_VARS;
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}
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if ( !$this->afPermManager->canSeeLogDetailsForFilter( $performer, $privacyLevel ) ) {
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$out->addWikiMsg( 'abusefilter-log-cannot-see-details' );
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return;
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}
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$visibility = SpecialAbuseLog::getEntryVisibilityForUser( $row, $performer, $this->afPermManager );
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if ( $visibility !== SpecialAbuseLog::VISIBILITY_VISIBLE ) {
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if ( $visibility === SpecialAbuseLog::VISIBILITY_HIDDEN ) {
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$msg = 'abusefilter-log-details-hidden';
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} elseif ( $visibility === SpecialAbuseLog::VISIBILITY_HIDDEN_IMPLICIT ) {
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$msg = 'abusefilter-log-details-hidden-implicit';
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} else {
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throw new LogicException( "Unexpected visibility $visibility" );
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}
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$out->addWikiMsg( $msg );
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return;
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}
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$shouldLogProtectedVarAccess = false;
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// Logs that reveal the values of protected variables are gated behind:
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// 1. the `abusefilter-access-protected-vars` right
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// 2. agreement to the `abusefilter-protected-vars-view-agreement` preference
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$userAuthority = $this->getAuthority();
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$canViewProtectedVars = $this->afPermManager->canViewProtectedVariableValues( $userAuthority );
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if ( FilterUtils::isProtected( $privacyLevel ) ) {
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if ( !$canViewProtectedVars ) {
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$out->addWikiMsg( 'abusefilter-examine-protected-vars-permission' );
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return;
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} else {
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$shouldLogProtectedVarAccess = true;
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}
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}
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// If a non-protected filter and a protected filter have overlapping conditions,
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// it's possible for a hit to contain a protected variable and for that variable
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// to be dumped and displayed on a detail page that wouldn't be considered
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// protected (because it caught on the public filter).
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// We shouldn't block access to the details of an otherwise public filter hit so
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// instead only check for access to the protected variables and redact them if the
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// user shouldn't see them.
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$vars = $this->varBlobStore->loadVarDump( $row );
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$varsArray = $this->varManager->dumpAllVars( $vars, true );
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foreach ( $this->afPermManager->getProtectedVariables() as $protectedVariable ) {
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if ( isset( $varsArray[$protectedVariable] ) ) {
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if ( !$canViewProtectedVars ) {
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$varsArray[$protectedVariable] = '';
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} else {
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// Protected variable in protected filters logs access in the general permission check
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// Log access to non-protected filters that happen to expose protected variables here
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if ( !FilterUtils::isProtected( $privacyLevel ) ) {
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$shouldLogProtectedVarAccess = true;
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}
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}
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}
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}
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$vars = VariableHolder::newFromArray( $varsArray );
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if ( $shouldLogProtectedVarAccess ) {
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$logger = $this->abuseLoggerFactory->getProtectedVarsAccessLogger();
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$logger->logViewProtectedVariableValue(
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$userAuthority->getUser(),
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$varsArray['user_name'] ?? $varsArray['accountname']
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);
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}
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$out->addJsConfigVars( [
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'wgAbuseFilterVariables' => $varsArray,
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'abuseFilterExamine' => [ 'type' => 'log', 'id' => $logid ]
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] );
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$this->showExaminer( $vars );
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}
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/**
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* @param VariableHolder|null $vars
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*/
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public function showExaminer( ?VariableHolder $vars ) {
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$output = $this->getOutput();
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$output->enableOOUI();
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if ( !$vars ) {
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$output->addWikiMsg( 'abusefilter-examine-incompatible' );
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return;
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}
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$html = '';
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$output->addModules( 'ext.abuseFilter.examine' );
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// Add test bit
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if ( $this->afPermManager->canUseTestTools( $this->getAuthority() ) ) {
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$boxBuilder = $this->boxBuilderFactory->newEditBoxBuilder(
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$this,
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$this->getAuthority(),
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$output
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);
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$tester = Html::rawElement( 'h2', [], $this->msg( 'abusefilter-examine-test' )->parse() );
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$tester .= $boxBuilder->buildEditBox( $this->testFilter, false, false, false );
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$tester .= $this->buildFilterLoader();
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$html .= Html::rawElement( 'div', [ 'id' => 'mw-abusefilter-examine-editor' ], $tester );
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$html .= Html::rawElement( 'p',
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[],
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new OOUI\ButtonInputWidget(
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[
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'label' => $this->msg( 'abusefilter-examine-test-button' )->text(),
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'id' => 'mw-abusefilter-examine-test',
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'flags' => [ 'primary', 'progressive' ]
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]
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) .
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Html::element( 'div',
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[
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'id' => 'mw-abusefilter-syntaxresult',
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'style' => 'display: none;'
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]
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)
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);
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}
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// Variable dump
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$html .= Html::rawElement(
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'h2',
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[],
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$this->msg( 'abusefilter-examine-vars' )->parse()
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);
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$html .= $this->variablesFormatter->buildVarDumpTable( $vars );
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$output->addHTML( $html );
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}
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}
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