SpecialActiveusers.php

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<?php
class ActiveUsersPager extends UsersPager {

    protected $opts;

    protected $hideGroups = array();

    protected $hideRights = array();

    function __construct( IContextSource $context = null, $group = null, $par = null ) {
        global $wgActiveUserDays;

        parent::__construct( $context );

        $this->RCMaxAge = $wgActiveUserDays;
        $un = $this->getRequest()->getText( 'username', $par );
        $this->requestedUser = '';
        if ( $un != '' ) {
            $username = Title::makeTitleSafe( NS_USER, $un );
            if ( !is_null( $username ) ) {
                $this->requestedUser = $username->getText();
            }
        }

        $this->setupOptions();
    }

    public function setupOptions() {
        $this->opts = new FormOptions();

        $this->opts->add( 'hidebots', false, FormOptions::BOOL );
        $this->opts->add( 'hidesysops', false, FormOptions::BOOL );

        $this->opts->fetchValuesFromRequest( $this->getRequest() );

        if ( $this->opts->getValue( 'hidebots' ) == 1 ) {
            $this->hideRights[] = 'bot';
        }
        if ( $this->opts->getValue( 'hidesysops' ) == 1 ) {
            $this->hideGroups[] = 'sysop';
        }
    }

    function getIndexField() {
        return 'qcc_title';
    }

    function getQueryInfo() {
        $dbr = $this->getDatabase();

        $conds = array(
            'qcc_type' => 'activeusers',
            'qcc_namespace' => NS_USER,
            'user_name = qcc_title',
            'rc_user_text = qcc_title',
            'rc_type != ' . $dbr->addQuotes( RC_EXTERNAL ) // Don't count wikidata.
        );
        if ( $this->requestedUser != '' ) {
            $conds[] = 'qcc_title >= ' . $dbr->addQuotes( $this->requestedUser );
        }
        if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
            $conds[] = 'NOT EXISTS (' . $dbr->selectSQLText(
                'ipblocks', '1', array( 'ipb_user=user_id', 'ipb_deleted' => 1 )
            ) . ')';
        }

        return array(
            'tables' => array( 'querycachetwo', 'user', 'recentchanges' ),
            'fields' => array( 'user_name', 'user_id', 'recentedits' => 'COUNT(*)', 'qcc_title' ),
            'options' => array( 'GROUP BY' => array( 'qcc_title' ) ),
            'conds' => $conds
        );
    }

    function doBatchLookups() {
        $uids = array();
        foreach ( $this->mResult as $row ) {
            $uids[] = $row->user_id;
        }
        // Fetch the block status of the user for showing "(blocked)" text and for
        // striking out names of suppressed users when privileged user views the list.
        // Although the first query already hits the block table for un-privileged, this
        // is done in two queries to avoid huge quicksorts and to make COUNT(*) correct.
        $dbr = $this->getDatabase();
        $res = $dbr->select( 'ipblocks',
            array( 'ipb_user', 'MAX(ipb_deleted) AS block_status' ),
            array( 'ipb_user' => $uids ),
            __METHOD__,
            array( 'GROUP BY' => array( 'ipb_user' ) )
        );
        $this->blockStatusByUid = array();
        foreach ( $res as $row ) {
            $this->blockStatusByUid[$row->ipb_user] = $row->block_status; // 0 or 1
        }
        $this->mResult->seek( 0 );
    }

    function formatRow( $row ) {
        $userName = $row->user_name;

        $ulinks = Linker::userLink( $row->user_id, $userName );
        $ulinks .= Linker::userToolLinks( $row->user_id, $userName );

        $lang = $this->getLanguage();

        $list = array();
        $user = User::newFromId( $row->user_id );

        // User right filter
        foreach ( $this->hideRights as $right ) {
            // Calling User::getRights() within the loop so that
            // if the hideRights() filter is empty, we don't have to
            // trigger the lazy-init of the big userrights array in the
            // User object
            if ( in_array( $right, $user->getRights() ) ) {
                return '';
            }
        }

        // User group filter
        // Note: This is a different loop than for user rights,
        // because we're reusing it to build the group links
        // at the same time
        foreach ( $user->getGroups() as $group ) {
            if ( in_array( $group, $this->hideGroups ) ) {
                return '';
            }
            $list[] = self::buildGroupLink( $group, $userName );
        }

        $groups = $lang->commaList( $list );

        $item = $lang->specialList( $ulinks, $groups );

        $isBlocked = isset( $this->blockStatusByUid[$row->user_id] );
        if ( $isBlocked && $this->blockStatusByUid[$row->user_id] == 1 ) {
            $item = "<span class=\"deleted\">$item</span>";
        }
        $count = $this->msg( 'activeusers-count' )->numParams( $row->recentedits )
            ->params( $userName )->numParams( $this->RCMaxAge )->escaped();
        $blocked = $isBlocked ? ' ' . $this->msg( 'listusers-blocked', $userName )->escaped() : '';

        return Html::rawElement( 'li', array(), "{$item} [{$count}]{$blocked}" );
    }

    function getPageHeader() {
        global $wgScript;

        $self = $this->getTitle();
        $limit = $this->mLimit ? Html::hidden( 'limit', $this->mLimit ) : '';

        $out = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) ); # Form tag
        $out .= Xml::fieldset( $this->msg( 'activeusers' )->text() ) . "\n";
        $out .= Html::hidden( 'title', $self->getPrefixedDBkey() ) . $limit . "\n";

        $out .= Xml::inputLabel( $this->msg( 'activeusers-from' )->text(),
            'username', 'offset', 20, $this->requestedUser, array( 'tabindex' => 1 ) ) . '<br />';# Username field

        $out .= Xml::checkLabel( $this->msg( 'activeusers-hidebots' )->text(),
            'hidebots', 'hidebots', $this->opts->getValue( 'hidebots' ), array( 'tabindex' => 2 ) );

        $out .= Xml::checkLabel( $this->msg( 'activeusers-hidesysops' )->text(),
            'hidesysops', 'hidesysops', $this->opts->getValue( 'hidesysops' ), array( 'tabindex' => 3 ) ) . '<br />';

        $out .= Xml::submitButton( $this->msg( 'allpagessubmit' )->text(), array( 'tabindex' => 4 ) ) . "\n";# Submit button and form bottom
        $out .= Xml::closeElement( 'fieldset' );
        $out .= Xml::closeElement( 'form' );

        return $out;
    }
}

class SpecialActiveUsers extends SpecialPage {

    public function __construct() {
        parent::__construct( 'Activeusers' );
    }

    public function execute( $par ) {
        global $wgActiveUserDays;

        $this->setHeaders();
        $this->outputHeader();

        $out = $this->getOutput();
        $out->wrapWikiMsg( "<div class='mw-activeusers-intro'>\n$1\n</div>",
            array( 'activeusers-intro', $this->getLanguage()->formatNum( $wgActiveUserDays ) ) );

        // Occasionally merge in new updates
        $seconds = min( self::mergeActiveUsers( 600 ), $wgActiveUserDays * 86400 );
        // Mention the level of staleness
        $out->addWikiMsg( 'cachedspecial-viewing-cached-ttl',
            $this->getLanguage()->formatDuration( $seconds ) );

        $up = new ActiveUsersPager( $this->getContext(), null, $par );

        # getBody() first to check, if empty
        $usersbody = $up->getBody();

        $out->addHTML( $up->getPageHeader() );
        if ( $usersbody ) {
            $out->addHTML(
                $up->getNavigationBar() .
                Html::rawElement( 'ul', array(), $usersbody ) .
                $up->getNavigationBar()
            );
        } else {
            $out->addWikiMsg( 'activeusers-noresult' );
        }
    }

    protected function getGroupName() {
        return 'users';
    }

    public static function mergeActiveUsers( $period ) {
        global $wgActiveUserDays;

        $dbr = wfGetDB( DB_SLAVE );
        $cTime = $dbr->selectField( 'querycache_info',
            'qci_timestamp',
            array( 'qci_type' => 'activeusers' )
        );
        if ( !wfReadOnly() ) {
            if ( !$cTime || ( time() - wfTimestamp( TS_UNIX, $cTime ) ) > $period ) {
                $dbw = wfGetDB( DB_MASTER );
                if ( $dbw->estimateRowCount( 'recentchanges' ) <= 10000 ) {
                    $window = $wgActiveUserDays * 86400; // small wiki
                } else {
                    $window = $period * 2;
                }
                self::doQueryCacheUpdate( $dbw, $window );
            }
        }

        return ( time() -
            ( $cTime ? wfTimestamp( TS_UNIX, $cTime ) : $wgActiveUserDays * 86400 ) );
    }

    public static function cacheUpdate( DatabaseBase $dbw ) {
        global $wgActiveUserDays;

        self::doQueryCacheUpdate( $dbw, $wgActiveUserDays * 86400 );
    }

    protected static function doQueryCacheUpdate( DatabaseBase $dbw, $window ) {
        global $wgActiveUserDays;

        $lockKey = wfWikiID() . '-activeusers';
        if ( !$dbw->lock( $lockKey, __METHOD__, 1 ) ) {
            return false; // exclusive update (avoids duplicate entries)
        }

        $now = time();
        $cTime = $dbw->selectField( 'querycache_info',
            'qci_timestamp',
            array( 'qci_type' => 'activeusers' )
        );
        $cTimeUnix = $cTime ? wfTimestamp( TS_UNIX, $cTime ) : 1;

        // Pick the date range to fetch from. This is normally from the last
        // update to till the present time, but has a limited window for sanity.
        // If the window is limited, multiple runs are need to fully populate it.
        $sTimestamp = max( $cTimeUnix, $now - $wgActiveUserDays * 86400 );
        $eTimestamp = min( $sTimestamp + $window, $now );

        // Get all the users active since the last update
        $res = $dbw->select(
            array( 'recentchanges' ),
            array( 'rc_user_text', 'lastedittime' => 'MAX(rc_timestamp)' ),
            array(
                'rc_user > 0', // actual accounts
                'rc_type != ' . $dbw->addQuotes( RC_EXTERNAL ), // no wikidata
                'rc_log_type IS NULL OR rc_log_type != ' . $dbw->addQuotes( 'newusers' ),
                'rc_timestamp >= ' . $dbw->addQuotes( $dbw->timestamp( $sTimestamp ) ),
                'rc_timestamp <= ' . $dbw->addQuotes( $dbw->timestamp( $eTimestamp ) )
            ),
            __METHOD__,
            array(
                'GROUP BY' => array( 'rc_user_text' ),
                'ORDER BY' => 'NULL' // avoid filesort
            )
        );
        $names = array();
        foreach ( $res as $row ) {
            $names[$row->rc_user_text] = $row->lastedittime;
        }

        // Rotate out users that have not edited in too long (according to old data set)
        $dbw->delete( 'querycachetwo',
            array(
                'qcc_type' => 'activeusers',
                'qcc_value < ' . $dbw->addQuotes( $now - $wgActiveUserDays * 86400 ) // TS_UNIX
            ),
            __METHOD__
        );

        // Find which of the recently active users are already accounted for
        if ( count( $names ) ) {
            $res = $dbw->select( 'querycachetwo',
                array( 'user_name' => 'qcc_title' ),
                array(
                    'qcc_type' => 'activeusers',
                    'qcc_namespace' => NS_USER,
                    'qcc_title' => array_keys( $names ) ),
                __METHOD__
            );
            foreach ( $res as $row ) {
                unset( $names[$row->user_name] );
            }
        }

        // Insert the users that need to be added to the list (which their last edit time
        if ( count( $names ) ) {
            $newRows = array();
            foreach ( $names as $name => $lastEditTime ) {
                $newRows[] = array(
                    'qcc_type' => 'activeusers',
                    'qcc_namespace' => NS_USER,
                    'qcc_title' => $name,
                    'qcc_value' => wfTimestamp( TS_UNIX, $lastEditTime ),
                    'qcc_namespacetwo' => 0, // unused
                    'qcc_titletwo' => '' // unused
                );
            }
            foreach ( array_chunk( $newRows, 500 ) as $rowBatch ) {
                $dbw->insert( 'querycachetwo', $rowBatch, __METHOD__ );
                wfWaitForSlaves();
            }
        }

        // Touch the data freshness timestamp
        $dbw->replace( 'querycache_info',
            array( 'qci_type' ),
            array( 'qci_type' => 'activeusers',
                'qci_timestamp' => $dbw->timestamp( $eTimestamp ) ), // not always $now
            __METHOD__
        );

        $dbw->unlock( $lockKey, __METHOD__ );

        return true;
    }
}