LogEventsList.php

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<?php
use MediaWiki\Context\ContextSource;
use MediaWiki\Context\IContextSource;
use MediaWiki\Context\RequestContext;
use MediaWiki\HookContainer\HookRunner;
use MediaWiki\Html\Html;
use MediaWiki\Linker\Linker;
use MediaWiki\Linker\LinkRenderer;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\MainConfigNames;
use MediaWiki\MediaWikiServices;
use MediaWiki\Output\OutputPage;
use MediaWiki\Page\PageReference;
use MediaWiki\Pager\LogPager;
use MediaWiki\Parser\Sanitizer;
use MediaWiki\Permissions\Authority;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Status\Status;
 
class LogEventsList extends ContextSource {
    public const NO_ACTION_LINK = 1;
    public const NO_EXTRA_USER_LINKS = 2;
    public const USE_CHECKBOXES = 4;
 
    public $flags;
 
    protected $showTagEditUI;
 
    private $linkRenderer;
 
    private $hookRunner;
 
    private $tagsCache;
 
    public function __construct( $context, $linkRenderer = null, $flags = 0 ) {
        $this->setContext( $context );
        $this->flags = $flags;
        $this->showTagEditUI = ChangeTags::showTagEditingUI( $this->getAuthority() );
        if ( $linkRenderer instanceof LinkRenderer ) {
            $this->linkRenderer = $linkRenderer;
        }
        $this->hookRunner = new HookRunner( MediaWikiServices::getInstance()->getHookContainer() );
        $this->tagsCache = new MapCacheLRU( 50 );
    }
 
    protected function getLinkRenderer() {
        if ( $this->linkRenderer !== null ) {
            return $this->linkRenderer;
        } else {
            return MediaWikiServices::getInstance()->getLinkRenderer();
        }
    }
 
    public function showOptions( $type = '', $year = 0, $month = 0, $day = 0 ) {
        $formDescriptor = [];
 
        // Basic selectors
        $formDescriptor['type'] = $this->getTypeMenuDesc();
        $formDescriptor['user'] = [
            'class' => HTMLUserTextField::class,
            'label-message' => 'specialloguserlabel',
            'name' => 'user',
            'ipallowed' => true,
            'iprange' => true,
            'external' => true,
        ];
        $formDescriptor['page'] = [
            'class' => HTMLTitleTextField::class,
            'label-message' => 'speciallogtitlelabel',
            'name' => 'page',
            'required' => false,
        ];
 
        // Title pattern, if allowed
        if ( !$this->getConfig()->get( MainConfigNames::MiserMode ) ) {
            $formDescriptor['pattern'] = [
                'type' => 'check',
                'label-message' => 'log-title-wildcard',
                'name' => 'pattern',
            ];
        }
 
        // Add extra inputs if any
        $extraInputsDescriptor = $this->getExtraInputsDesc( $type );
        if ( $extraInputsDescriptor ) {
            $formDescriptor[ 'extra' ] = $extraInputsDescriptor;
        }
 
        // Date menu
        $formDescriptor['date'] = [
            'type' => 'date',
            'label-message' => 'date',
            'default' => $year && $month && $day ? sprintf( "%04d-%02d-%02d", $year, $month, $day ) : '',
        ];
 
        // Tag filter
        $formDescriptor['tagfilter'] = [
            'type' => 'tagfilter',
            'name' => 'tagfilter',
            'label-message' => 'tag-filter',
        ];
        $formDescriptor['tagInvert'] = [
            'type' => 'check',
            'name' => 'tagInvert',
            'label-message' => 'invert',
            'hide-if' => [ '===', 'tagfilter', '' ],
        ];
 
        // Filter checkboxes, when work on all logs
        if ( $type === '' ) {
            $formDescriptor['filters'] = $this->getFiltersDesc();
        }
 
        // Action filter
        $allowedActions = $this->getConfig()->get( MainConfigNames::ActionFilteredLogs );
        if ( isset( $allowedActions[$type] ) ) {
            $formDescriptor['subtype'] = $this->getActionSelectorDesc( $type, $allowedActions[$type] );
        }
 
        $htmlForm = HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() );
        $htmlForm
            ->setTitle( SpecialPage::getTitleFor( 'Log' ) ) // Remove subpage
            ->setSubmitTextMsg( 'logeventslist-submit' )
            ->setMethod( 'GET' )
            ->setWrapperLegendMsg( 'log' )
            ->setFormIdentifier( 'logeventslist', true ) // T321154
            // Set callback for data validation and log type description.
            ->setSubmitCallback( static function ( $formData, $form ) {
                $form->addPreHtml(
                    ( new LogPage( $formData['type'] ) )->getDescription()
                        ->setContext( $form->getContext() )->parseAsBlock()
                );
                return true;
            } );
 
        $result = $htmlForm->prepareForm()->trySubmit();
        $htmlForm->displayForm( $result );
        return $result === true || ( $result instanceof Status && $result->isGood() );
    }
 
    private function getFiltersDesc() {
        $optionsMsg = [];
        $filters = $this->getConfig()->get( MainConfigNames::FilterLogTypes );
        foreach ( $filters as $type => $val ) {
            $optionsMsg["logeventslist-{$type}-log"] = $type;
        }
        return [
            'class' => HTMLMultiSelectField::class,
            'label-message' => 'logeventslist-more-filters',
            'flatlist' => true,
            'options-messages' => $optionsMsg,
            'default' => array_keys( array_intersect( $filters, [ false ] ) ),
        ];
    }
 
    private function getTypeMenuDesc() {
        $typesByName = [];
        // Load the log names
        foreach ( LogPage::validTypes() as $type ) {
            $page = new LogPage( $type );
            $pageText = $page->getName()->text();
            if ( in_array( $pageText, $typesByName ) ) {
                LoggerFactory::getInstance( 'error' )->error(
                    'The log type {log_type_one} has the same translation as {log_type_two} for {lang}. ' .
                    '{log_type_one} will not be displayed in the drop down menu on Special:Log.',
                    [
                        'log_type_one' => $type,
                        'log_type_two' => array_search( $pageText, $typesByName ),
                        'lang' => $this->getLanguage()->getCode(),
                    ]
                );
                continue;
            }
            if ( $this->getAuthority()->isAllowed( $page->getRestriction() ) ) {
                $typesByName[$type] = $pageText;
            }
        }
 
        asort( $typesByName );
 
        // Always put "All public logs" on top
        $public = $typesByName[''];
        unset( $typesByName[''] );
        $typesByName = [ '' => $public ] + $typesByName;
 
        return [
            'class' => HTMLSelectField::class,
            'name' => 'type',
            'options' => array_flip( $typesByName ),
        ];
    }
 
    private function getExtraInputsDesc( $type ) {
        if ( $type === 'suppress' ) {
            return [
                'type' => 'text',
                'label-message' => 'revdelete-offender',
                'name' => 'offender',
            ];
        } else {
            // Allow extensions to add an extra input into the descriptor array.
            $unused = ''; // Deprecated since 1.32, removed in 1.41
            $formDescriptor = [];
            $this->hookRunner->onLogEventsListGetExtraInputs( $type, $this, $unused, $formDescriptor );
 
            return $formDescriptor;
        }
    }
 
    private function getActionSelectorDesc( $type, $actions ) {
        $actionOptions = [ 'log-action-filter-all' => '' ];
 
        foreach ( $actions as $value => $_ ) {
            $msgKey = "log-action-filter-$type-$value";
            $actionOptions[ $msgKey ] = $value;
        }
 
        return [
            'class' => HTMLSelectField::class,
            'name' => 'subtype',
            'options-messages' => $actionOptions,
            'label-message' => 'log-action-filter-' . $type,
        ];
    }
 
    public function beginLogEventsList() {
        return "<ul class='mw-logevent-loglines'>\n";
    }
 
    public function endLogEventsList() {
        return "</ul>\n";
    }
 
    public function logLine( $row ) {
        $entry = DatabaseLogEntry::newFromRow( $row );
        $formatter = LogFormatter::newFromEntry( $entry );
        $formatter->setContext( $this->getContext() );
        $formatter->setLinkRenderer( $this->getLinkRenderer() );
        $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 
        $time = $this->getLanguage()->userTimeAndDate(
            $entry->getTimestamp(),
            $this->getUser()
        );
        // Link the time text to the specific log entry, see T207562
        $timeLink = $this->getLinkRenderer()->makeKnownLink(
            SpecialPage::getTitleValueFor( 'Log' ),
            $time,
            [],
            [ 'logid' => $entry->getId() ]
        );
 
        $action = $formatter->getActionText();
 
        if ( $this->flags & self::NO_ACTION_LINK ) {
            $revert = '';
        } else {
            $revert = $formatter->getActionLinks();
            if ( $revert != '' ) {
                $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
            }
        }
 
        $comment = $formatter->getComment();
 
        // Some user can hide log items and have review links
        $del = $this->getShowHideLinks( $row );
 
        // Any tags...
        [ $tagDisplay, $newClasses ] = $this->tagsCache->getWithSetCallback(
            $this->tagsCache->makeKey(
                $row->ts_tags ?? '',
                $this->getUser()->getName(),
                $this->getLanguage()->getCode()
            ),
            fn () => ChangeTags::formatSummaryRow(
                $row->ts_tags,
                'logevent',
                $this->getContext()
            )
        );
        $classes = array_merge(
            [ 'mw-logline-' . $entry->getType() ],
            $newClasses
        );
        $attribs = [
            'data-mw-logid' => $entry->getId(),
            'data-mw-logaction' => $entry->getFullType(),
        ];
        $ret = "$del $timeLink $action $comment $revert $tagDisplay";
 
        // Let extensions add data
        $this->hookRunner->onLogEventsListLineEnding( $this, $ret, $entry, $classes, $attribs );
        $attribs = array_filter( $attribs,
            [ Sanitizer::class, 'isReservedDataAttribute' ],
            ARRAY_FILTER_USE_KEY
        );
        $attribs['class'] = $classes;
 
        return Html::rawElement( 'li', $attribs, $ret ) . "\n";
    }
 
    private function getShowHideLinks( $row ) {
        // We don't want to see the links and
        if ( $this->flags == self::NO_ACTION_LINK ) {
            return '';
        }
 
        // If change tag editing is available to this user, return the checkbox
        if ( $this->flags & self::USE_CHECKBOXES && $this->showTagEditUI ) {
            return Xml::check(
                'showhiderevisions',
                false,
                [ 'name' => 'ids[' . $row->log_id . ']' ]
            );
        }
 
        // no one can hide items from the suppress log.
        if ( $row->log_type == 'suppress' ) {
            return '';
        }
 
        $del = '';
        $authority = $this->getAuthority();
        // Don't show useless checkbox to people who cannot hide log entries
        if ( $authority->isAllowed( 'deletedhistory' ) ) {
            $canHide = $authority->isAllowed( 'deletelogentry' );
            $canViewSuppressedOnly = $authority->isAllowed( 'viewsuppressed' ) &&
                !$authority->isAllowed( 'suppressrevision' );
            $entryIsSuppressed = self::isDeleted( $row, LogPage::DELETED_RESTRICTED );
            $canViewThisSuppressedEntry = $canViewSuppressedOnly && $entryIsSuppressed;
            if ( $row->log_deleted || $canHide ) {
                // Show checkboxes instead of links.
                if ( $canHide && $this->flags & self::USE_CHECKBOXES && !$canViewThisSuppressedEntry ) {
                    // If event was hidden from sysops
                    if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $authority ) ) {
                        $del = Xml::check( 'deleterevisions', false, [ 'disabled' => 'disabled' ] );
                    } else {
                        $del = Xml::check(
                            'showhiderevisions',
                            false,
                            [ 'name' => 'ids[' . $row->log_id . ']' ]
                        );
                    }
                } else {
                    // If event was hidden from sysops
                    if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $authority ) ) {
                        $del = Linker::revDeleteLinkDisabled( $canHide );
                    } else {
                        $query = [
                            'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
                            'type' => 'logging',
                            'ids' => $row->log_id,
                        ];
                        $del = Linker::revDeleteLink(
                            $query,
                            $entryIsSuppressed,
                            $canHide && !$canViewThisSuppressedEntry
                        );
                    }
                }
            }
        }
 
        return $del;
    }
 
    public static function typeAction( $row, $type, $action ) {
        $match = is_array( $type ) ?
            in_array( $row->log_type, $type ) : $row->log_type == $type;
        if ( $match ) {
            $match = is_array( $action ) ?
                in_array( $row->log_action, $action ) : $row->log_action == $action;
        }
 
        return $match;
    }
 
    public static function userCan( $row, $field, Authority $performer ) {
        return self::userCanBitfield( $row->log_deleted, $field, $performer ) &&
            self::userCanViewLogType( $row->log_type, $performer );
    }
 
    public static function userCanBitfield( $bitfield, $field, Authority $performer ) {
        if ( $bitfield & $field ) {
            if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
                return $performer->isAllowedAny( 'suppressrevision', 'viewsuppressed' );
            } else {
                return $performer->isAllowed( 'deletedhistory' );
            }
        }
        return true;
    }
 
    public static function userCanViewLogType( $type, Authority $performer ) {
        $logRestrictions = MediaWikiServices::getInstance()->getMainConfig()->get( MainConfigNames::LogRestrictions );
        if ( isset( $logRestrictions[$type] ) && !$performer->isAllowed( $logRestrictions[$type] ) ) {
            return false;
        }
        return true;
    }
 
    public static function isDeleted( $row, $field ) {
        return ( $row->log_deleted & $field ) == $field;
    }
 
    public static function showLogExtract(
        &$out, $types = [], $page = '', $user = '', $param = []
    ) {
        $defaultParameters = [
            'lim' => 25,
            'conds' => [],
            'showIfEmpty' => true,
            'msgKey' => [ '' ],
            'wrap' => "$1",
            'flags' => 0,
            'useRequestParams' => false,
            'useMaster' => false,
            'extraUrlParams' => false,
        ];
        # The + operator appends elements of remaining keys from the right
        # handed array to the left handed, whereas duplicated keys are NOT overwritten.
        $param += $defaultParameters;
        # Convert $param array to individual variables
        $lim = $param['lim'];
        $conds = $param['conds'];
        $showIfEmpty = $param['showIfEmpty'];
        $msgKey = $param['msgKey'];
        $wrap = $param['wrap'];
        $flags = $param['flags'];
        $extraUrlParams = $param['extraUrlParams'];
 
        $useRequestParams = $param['useRequestParams'];
        // @phan-suppress-next-line PhanRedundantCondition
        if ( !is_array( $msgKey ) ) {
            $msgKey = [ $msgKey ];
        }
 
        if ( $out instanceof OutputPage ) {
            $context = $out->getContext();
        } else {
            $context = RequestContext::getMain();
        }
 
        $services = MediaWikiServices::getInstance();
        // FIXME: Figure out how to inject this
        $linkRenderer = $services->getLinkRenderer();
 
        # Insert list of top 50 (or top $lim) items
        $loglist = new LogEventsList( $context, $linkRenderer, $flags );
        $pager = new LogPager(
            $loglist,
            $types,
            $user,
            $page,
            false,
            $conds,
            false,
            false,
            false,
            '',
            '',
            0,
            $services->getLinkBatchFactory(),
            $services->getActorNormalization()
        );
        // @phan-suppress-next-line PhanImpossibleCondition
        if ( !$useRequestParams ) {
            # Reset vars that may have been taken from the request
            $pager->mLimit = 50;
            $pager->mDefaultLimit = 50;
            $pager->mOffset = "";
            $pager->mIsBackwards = false;
        }
 
        // @phan-suppress-next-line PhanImpossibleCondition
        if ( $param['useMaster'] ) {
            $pager->mDb = $services->getConnectionProvider()->getPrimaryDatabase();
        }
        // @phan-suppress-next-line PhanImpossibleCondition
        if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
            $pager->setOffset( $param['offset'] );
        }
 
        // @phan-suppress-next-line PhanSuspiciousValueComparison
        if ( $lim > 0 ) {
            $pager->mLimit = $lim;
        }
        // Fetch the log rows and build the HTML if needed
        $logBody = $pager->getBody();
        $numRows = $pager->getNumRows();
 
        $s = '';
 
        if ( $logBody ) {
            if ( $msgKey[0] ) {
                // @phan-suppress-next-line PhanParamTooFewUnpack Non-emptiness checked above
                $msg = $context->msg( ...$msgKey );
                if ( $page instanceof PageReference ) {
                    $msg->page( $page );
                }
                $s .= $msg->parseAsBlock();
            }
            $s .= $loglist->beginLogEventsList() .
                $logBody .
                $loglist->endLogEventsList();
            // add styles for change tags
            $context->getOutput()->addModuleStyles( 'mediawiki.interface.helpers.styles' );
        // @phan-suppress-next-line PhanRedundantCondition
        } elseif ( $showIfEmpty ) {
            $s = Html::rawElement( 'div', [ 'class' => 'mw-warning-logempty' ],
                $context->msg( 'logempty' )->parse() );
        }
 
        if ( $page instanceof PageReference ) {
            $titleFormatter = MediaWikiServices::getInstance()->getTitleFormatter();
            $pageName = $titleFormatter->getPrefixedDBkey( $page );
        } elseif ( $page != '' ) {
            $pageName = $page;
        } else {
            $pageName = null;
        }
 
        if ( $numRows > $pager->mLimit ) { # Show "Full log" link
            $urlParam = [];
            if ( $pageName ) {
                $urlParam['page'] = $pageName;
            }
 
            if ( $user != '' ) {
                $urlParam['user'] = $user;
            }
 
            if ( !is_array( $types ) ) { # Make it an array, if it isn't
                $types = [ $types ];
            }
 
            # If there is exactly one log type, we can link to Special:Log?type=foo
            if ( count( $types ) == 1 ) {
                $urlParam['type'] = $types[0];
            }
 
            // @phan-suppress-next-line PhanSuspiciousValueComparison
            if ( $extraUrlParams !== false ) {
                $urlParam = array_merge( $urlParam, $extraUrlParams );
            }
 
            $s .= $linkRenderer->makeKnownLink(
                SpecialPage::getTitleFor( 'Log' ),
                $context->msg( 'log-fulllog' )->text(),
                [],
                $urlParam
            );
        }
 
        if ( $logBody && $msgKey[0] ) {
            // TODO: The condition above is weird. Should this be done in any other cases?
            // Or is it always true in practice?
 
            // Mark as interface language (T60685)
            $dir = $context->getLanguage()->getDir();
            $lang = $context->getLanguage()->getHtmlCode();
            $s = Html::rawElement( 'div', [
                'class' => "mw-content-$dir",
                'dir' => $dir,
                'lang' => $lang,
            ], $s );
 
            // Wrap in warning box
            $s = Html::warningBox(
                $s,
                'mw-warning-with-logexcerpt'
            );
        }
 
        // @phan-suppress-next-line PhanSuspiciousValueComparison, PhanRedundantCondition
        if ( $wrap != '' ) { // Wrap message in html
            $s = str_replace( '$1', $s, $wrap );
        }
 
        /* hook can return false, if we don't want the message to be emitted (Wikia BugId:7093) */
        $hookRunner = new HookRunner( $services->getHookContainer() );
        if ( $hookRunner->onLogEventsListShowLogExtract( $s, $types, $pageName, $user, $param ) ) {
            // $out can be either an OutputPage object or a String-by-reference
            if ( $out instanceof OutputPage ) {
                $out->addHTML( $s );
            } else {
                $out = $s;
            }
        }
 
        return $numRows;
    }
 
    public static function getExcludeClause( $db, $audience = 'public', Authority $performer = null ) {
        $logRestrictions = MediaWikiServices::getInstance()->getMainConfig()->get( MainConfigNames::LogRestrictions );
 
        if ( $audience != 'public' && $performer === null ) {
            throw new InvalidArgumentException(
                'A User object must be given when checking for a user audience.'
            );
        }
 
        // Reset the array, clears extra "where" clauses when $par is used
        $hiddenLogs = [];
 
        // Don't show private logs to unprivileged users
        foreach ( $logRestrictions as $logType => $right ) {
            if ( $audience == 'public' || !$performer->isAllowed( $right ) ) {
                $hiddenLogs[] = $logType;
            }
        }
        if ( count( $hiddenLogs ) == 1 ) {
            return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
        } elseif ( $hiddenLogs ) {
            return 'log_type NOT IN (' . $db->makeList( $hiddenLogs ) . ')';
        }
 
        return false;
    }
}