AbuseLogPager.php
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AbuseLogPager.php
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	<?php

	namespace MediaWiki\Extension\AbuseFilter\Pager;

	use HtmlArmor;
	use MediaWiki\Cache\LinkBatchFactory;
	use MediaWiki\Context\IContextSource;
	use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager;
	use MediaWiki\Extension\AbuseFilter\AbuseFilterServices;
	use MediaWiki\Extension\AbuseFilter\CentralDBNotAvailableException;
	use MediaWiki\Extension\AbuseFilter\Filter\MutableFilter;
	use MediaWiki\Extension\AbuseFilter\Special\SpecialAbuseLog;
	use MediaWiki\Extension\AbuseFilter\Variables\VariablesBlobStore;
	use MediaWiki\Html\Html;
	use MediaWiki\Linker\Linker;
	use MediaWiki\Linker\LinkRenderer;
	use MediaWiki\Linker\LinkTarget;
	use MediaWiki\MediaWikiServices;
	use MediaWiki\Pager\ReverseChronologicalPager;
	use MediaWiki\Parser\Sanitizer;
	use MediaWiki\Permissions\PermissionManager;
	use MediaWiki\SpecialPage\SpecialPage;
	use MediaWiki\Title\Title;
	use MediaWiki\User\UserIdentityValue;
	use MediaWiki\WikiMap\WikiMap;
	use stdClass;
	use Wikimedia\Rdbms\IResultWrapper;

	class AbuseLogPager extends ReverseChronologicalPager {
	/**
	* @var array
	*/
	private $conds;

	/** @var string */
	private $basePageName;

	/**
	* @var string[] Map of [ id => show\|hide ], for entries that we're currently (un)hiding
	*/
	private $hideEntries;

	private LinkBatchFactory $linkBatchFactory;
	private PermissionManager $permissionManager;
	private AbuseFilterPermissionManager $afPermissionManager;
	private VariablesBlobStore $varBlobStore;

	public function __construct(
	IContextSource $context,
	LinkRenderer $linkRenderer,
	array $conds,
	LinkBatchFactory $linkBatchFactory,
	PermissionManager $permManager,
	AbuseFilterPermissionManager $afPermissionManager,
	VariablesBlobStore $varBlobStore,
	string $basePageName,
	array $hideEntries = []
	) {
	parent::__construct( $context, $linkRenderer );
	$this->conds = $conds;
	$this->linkBatchFactory = $linkBatchFactory;
	$this->permissionManager = $permManager;
	$this->afPermissionManager = $afPermissionManager;
	$this->varBlobStore = $varBlobStore;
	$this->basePageName = $basePageName;
	$this->hideEntries = $hideEntries;
	}

	/**
	* @param stdClass $row
	* @return string
	*/
	public function formatRow( $row ) {
	return $this->doFormatRow( $row );
	}

	/**
	* @param stdClass $row
	* @param bool $isListItem
	* @return string
	*/
	public function doFormatRow( stdClass $row, bool $isListItem = true ): string {
	$performer = $this->getAuthority();
	$visibility = SpecialAbuseLog::getEntryVisibilityForUser( $row, $performer, $this->afPermissionManager );

	if ( $visibility !== SpecialAbuseLog::VISIBILITY_VISIBLE ) {
	return '';
	}

	$linkRenderer = $this->getLinkRenderer();
	$diffLink = false;

	if ( !$row->afl_wiki ) {
	$title = Title::makeTitle( $row->afl_namespace, $row->afl_title );

	$pageLink = $linkRenderer->makeLink(
	$title,
	null,
	[],
	[ 'redirect' => 'no' ]
	);
	if ( $row->rev_id ) {
	$diffLink = $linkRenderer->makeKnownLink(
	$title,
	new HtmlArmor( $this->msg( 'abusefilter-log-diff' )->parse() ),
	[],
	[ 'diff' => 'prev', 'oldid' => $row->rev_id ]
	);
	} elseif (
	isset( $row->ar_timestamp ) && $row->ar_timestamp
	&& $this->canSeeUndeleteDiffForPage( $title )
	) {
	$diffLink = $linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( 'Undelete' ),
	new HtmlArmor( $this->msg( 'abusefilter-log-diff' )->parse() ),
	[],
	[
	'diff' => 'prev',
	'target' => $title->getPrefixedText(),
	'timestamp' => $row->ar_timestamp,
	]
	);
	}
	} else {
	$pageLink = WikiMap::makeForeignLink( $row->afl_wiki, $row->afl_title );

	if ( $row->afl_rev_id ) {
	$diffUrl = WikiMap::getForeignURL( $row->afl_wiki, $row->afl_title );
	$diffUrl = wfAppendQuery( $diffUrl,
	[ 'diff' => 'prev', 'oldid' => $row->afl_rev_id ] );

	$diffLink = Linker::makeExternalLink( $diffUrl,
	$this->msg( 'abusefilter-log-diff' )->text() );
	}
	}

	if ( !$row->afl_wiki ) {
	// Local user
	$userLink = SpecialAbuseLog::getUserLinks( $row->afl_user, $row->afl_user_text );
	} else {
	$userLink = WikiMap::foreignUserLink( $row->afl_wiki, $row->afl_user_text ) . ' ' .
	$this->msg( 'parentheses' )->params( WikiMap::getWikiName( $row->afl_wiki ) )->escaped();
	}

	$lang = $this->getLanguage();
	$timestamp = htmlspecialchars( $lang->userTimeAndDate( $row->afl_timestamp, $this->getUser() ) );

	$actions_takenRaw = $row->afl_actions;
	if ( !strlen( trim( $actions_takenRaw ) ) ) {
	$actions_taken = $this->msg( 'abusefilter-log-noactions' )->escaped();
	} else {
	$actions = explode( ',', $actions_takenRaw );
	$displayActions = [];

	$specsFormatter = AbuseFilterServices::getSpecsFormatter();
	$specsFormatter->setMessageLocalizer( $this->getContext() );
	foreach ( $actions as $action ) {
	$displayActions[] = $specsFormatter->getActionDisplay( $action );
	}
	$actions_taken = $lang->commaList( $displayActions );
	}

	$filterID = $row->afl_filter_id;
	$global = $row->afl_global;

	// Pull global filter description
	$lookup = AbuseFilterServices::getFilterLookup();
	try {
	$filterObj = $lookup->getFilter( $filterID, $global );
	$escaped_comments = Sanitizer::escapeHtmlAllowEntities( $filterObj->getName() );
	} catch ( CentralDBNotAvailableException $_ ) {
	$escaped_comments = $this->msg( 'abusefilter-log-description-not-available' )->escaped();
	// either hide all filters, including not hidden/protected, or show all, including hidden/protected
	// we choose the former
	$filterObj = MutableFilter::newDefault();
	$filterObj->setProtected( true );
	$filterObj->setHidden( true );
	}

	// Determine if the user has access to the associated filter and also the details of the current log
	// These are used to determine what links to display for the log line.
	$canSeeLogDetails = $this->afPermissionManager->canSeeLogDetailsForFilter( $performer, $filterObj );
	$canSeeFilter = $canSeeLogDetails;
	if ( $filterObj->isProtected() ) {
	$canSeeFilter = $canSeeFilter &&
	$this->afPermissionManager->canViewProtectedVariablesInFilter( $performer, $filterObj )->isGood();

	if ( $canSeeLogDetails ) {
	$vars = $this->varBlobStore->loadVarDump( $row );
	$canSeeLogDetails = $this->afPermissionManager->canViewProtectedVariables(
	$performer, array_keys( $vars->getVars() )
	)->isGood();
	}
	}

	if ( $canSeeFilter ) {
	$actionLinks = [];

	if ( $canSeeLogDetails ) {
	if ( $isListItem ) {
	$detailsLink = $linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( $this->basePageName, $row->afl_id ),
	$this->msg( 'abusefilter-log-detailslink' )->text()
	);
	$actionLinks[] = $detailsLink;
	}

	$examineTitle = SpecialPage::getTitleFor( 'AbuseFilter', 'examine/log/' . $row->afl_id );
	$examineLink = $linkRenderer->makeKnownLink(
	$examineTitle,
	new HtmlArmor( $this->msg( 'abusefilter-changeslist-examine' )->parse() )
	);
	$actionLinks[] = $examineLink;
	}

	if ( $diffLink ) {
	$actionLinks[] = $diffLink;
	}

	if ( !$isListItem && $canSeeLogDetails && $this->afPermissionManager->canHideAbuseLog( $performer ) ) {
	// Link for hiding a single entry from the details view
	$hideLink = $linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( $this->basePageName, 'hide' ),
	$this->msg( 'abusefilter-log-hidelink' )->text(),
	[],
	[ "hideids[$row->afl_id]" => 1 ]
	);

	$actionLinks[] = $hideLink;
	}

	if ( $global ) {
	$centralDb = $this->getConfig()->get( 'AbuseFilterCentralDB' );
	$linkMsg = $this->msg( 'abusefilter-log-detailedentry-global' )
	->numParams( $filterID );
	if ( $centralDb !== null ) {
	$globalURL = WikiMap::getForeignURL(
	$centralDb,
	'Special:AbuseFilter/' . $filterID
	);
	$filterLink = Linker::makeExternalLink( $globalURL, $linkMsg->text() );
	} else {
	$filterLink = $linkMsg->escaped();
	}
	} else {
	$title = SpecialPage::getTitleFor( 'AbuseFilter', (string)$filterID );
	$linkText = $this->msg( 'abusefilter-log-detailedentry-local' )
	->numParams( $filterID )->text();
	$filterLink = $linkRenderer->makeKnownLink( $title, $linkText );
	}

	if ( count( $actionLinks ) ) {
	$msg = 'abusefilter-log-detailedentry-meta';
	} else {
	$msg = 'abusefilter-log-detailedentry-meta-without-action-links';
	}
	$description = $this->msg( $msg )->rawParams(
	$timestamp,
	$userLink,
	$filterLink,
	htmlspecialchars( $row->afl_action ),
	$pageLink,
	$actions_taken,
	$escaped_comments,
	// Passing $8 to 'abusefilter-log-detailedentry-meta-without-action-links' will do nothing,
	// as it's not used.
	$lang->pipeList( $actionLinks )
	)->params( $row->afl_user_text )->parse();
	} else {
	if ( $diffLink ) {
	$msg = 'abusefilter-log-entry-withdiff';
	} else {
	$msg = 'abusefilter-log-entry';
	}
	$description = $this->msg( $msg )->rawParams(
	$timestamp,
	$userLink,
	htmlspecialchars( $row->afl_action ),
	$pageLink,
	$actions_taken,
	$escaped_comments,
	// Passing $7 to 'abusefilter-log-entry' will do nothing, as it's not used.
	$diffLink ?: ''
	)->params( $row->afl_user_text )->parse();
	}

	$attribs = [];
	if (
	$this->isHidingEntry( $row ) === true \|\|
	// If isHidingEntry is false, we've just unhidden the row
	( $this->isHidingEntry( $row ) === null && $row->afl_deleted )
	) {
	$attribs['class'] = 'mw-abusefilter-log-hidden-entry';
	} else {
	$attribs['data-afl-log-id'] = $row->afl_id;
	}
	if ( self::entryHasAssociatedDeletedRev( $row ) ) {
	$description .= ' ' .
	$this->msg( 'abusefilter-log-hidden-implicit' )->parse();
	}

	if ( $isListItem && !$this->hideEntries && $this->afPermissionManager->canHideAbuseLog( $performer ) ) {
	// Checkbox for hiding multiple entries, single entries are handled above
	$description = Html::check( 'hideids[' . $row->afl_id . ']' ) . ' ' . $description;
	}

	if ( $isListItem ) {
	return Html::rawElement( 'li', $attribs, $description );
	} else {
	return Html::rawElement( 'span', $attribs, $description );
	}
	}

	/**
	* Can this user see diffs generated by Special:Undelete for the page?
	* @see MediaWiki\Specials\SpecialUndelete
	* @param LinkTarget $page
	*
	* @return bool
	*/
	private function canSeeUndeleteDiffForPage( LinkTarget $page ): bool {
	if ( !$this->canSeeUndeleteDiffs() ) {
	return false;
	}

	foreach ( [ 'deletedtext', 'undelete' ] as $action ) {
	if ( $this->permissionManager->userCan(
	$action, $this->getUser(), $page, PermissionManager::RIGOR_QUICK
	) ) {
	return true;
	}
	}

	return false;
	}

	/**
	* Can this user see diffs generated by Special:Undelete?
	* @see MediaWiki\Specials\SpecialUndelete
	*
	* @return bool
	*/
	private function canSeeUndeleteDiffs(): bool {
	if ( !$this->permissionManager->userHasRight( $this->getUser(), 'deletedhistory' ) ) {
	return false;
	}

	return $this->permissionManager->userHasAnyRight(
	$this->getUser(), 'deletedtext', 'undelete' );
	}

	/**
	* @return array
	*/
	public function getQueryInfo() {
	$info = [
	'tables' => [ 'abuse_filter_log', 'revision' ],
	'fields' => [
	'afl_id',
	'afl_global',
	'afl_filter_id',
	'afl_user',
	'afl_ip_hex',
	'afl_user_text',
	'afl_action',
	'afl_actions',
	'afl_var_dump',
	'afl_timestamp',
	'afl_namespace',
	'afl_title',
	'afl_wiki',
	'afl_deleted',
	'afl_rev_id',
	'rev_id',
	],
	'conds' => $this->conds,
	'join_conds' => [
	'revision' => [
	'LEFT JOIN',
	[
	'afl_wiki' => null,
	$this->mDb->expr( 'afl_rev_id', '!=', null ),
	'rev_id=afl_rev_id',
	]
	],
	],
	];

	if ( $this->canSeeUndeleteDiffs() ) {
	$info['tables'][] = 'archive';
	$info['fields'][] = 'ar_timestamp';
	$info['join_conds']['archive'] = [
	'LEFT JOIN',
	[
	'afl_wiki' => null,
	$this->mDb->expr( 'afl_rev_id', '!=', null ),
	'rev_id' => null,
	'ar_rev_id=afl_rev_id',
	]
	];
	}

	if ( !$this->afPermissionManager->canSeeHiddenLogEntries( $this->getAuthority() ) ) {
	$info['conds']['afl_deleted'] = 0;
	}

	return $info;
	}

	/**
	* @param IResultWrapper $result
	*/
	protected function preprocessResults( $result ) {
	if ( $this->getNumRows() === 0 ) {
	return;
	}

	$lb = $this->linkBatchFactory->newLinkBatch();
	$lb->setCaller( __METHOD__ );
	foreach ( $result as $row ) {
	// Only for local wiki results
	if ( !$row->afl_wiki ) {
	$lb->add( $row->afl_namespace, $row->afl_title );
	$lb->addUser( new UserIdentityValue( $row->afl_user ?? 0, $row->afl_user_text ) );
	}
	}
	$lb->execute();
	$result->seek( 0 );
	}

	/**
	* @param stdClass $row
	* @return bool
	* @todo This should be moved elsewhere
	*/
	private static function entryHasAssociatedDeletedRev( stdClass $row ): bool {
	if ( !$row->afl_rev_id ) {
	return false;
	}
	$revision = MediaWikiServices::getInstance()
	->getRevisionLookup()
	->getRevisionById( $row->afl_rev_id );
	return $revision && $revision->getVisibility() !== 0;
	}

	/**
	* Check whether the entry passed in is being currently hidden/unhidden.
	* This is used to format the entries list shown when updating visibility, and is necessary because
	* when we decide whether to display the entry as hidden the DB hasn't been updated yet.
	*
	* @param stdClass $row
	* @return bool\|null True if just hidden, false if just unhidden, null if untouched
	*/
	private function isHidingEntry( stdClass $row ): ?bool {
	if ( isset( $this->hideEntries[ $row->afl_id ] ) ) {
	return $this->hideEntries[ $row->afl_id ] === 'hide';
	}
	return null;
	}

	/**
	* @codeCoverageIgnore Merely declarative
	* @inheritDoc
	*/
	public function getIndexField() {
	return 'afl_timestamp';
	}
	}

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