LogEntry.php

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<?php
interface LogEntry {

        public function getType();

        public function getSubtype();

        public function getFullType();

        public function getParameters();

        public function getPerformer();

        public function getTarget();

        public function getTimestamp();

        public function getComment();

        public function getDeleted();

        public function isDeleted( $field );
}

abstract class LogEntryBase implements LogEntry {

        public function getFullType() {
                return $this->getType() . '/' . $this->getSubtype();
        }

        public function isDeleted( $field ) {
                return ( $this->getDeleted() & $field ) === $field;
        }

        public function isLegacy() {
                return false;
        }

}

class DatabaseLogEntry extends LogEntryBase {
        // Static->

        public static function getSelectQueryData() {
                $tables = array( 'logging', 'user' );
                $fields = array(
                        'log_id', 'log_type', 'log_action', 'log_timestamp',
                        'log_user', 'log_user_text',
                        'log_namespace', 'log_title', // unused log_page
                        'log_comment', 'log_params', 'log_deleted',
                        'user_id', 'user_name', 'user_editcount',
                );

                $joins = array(
                        // IP's don't have an entry in user table
                        'user' => array( 'LEFT JOIN', 'log_user=user_id' ),
                );

                return array(
                        'tables' => $tables,
                        'fields' => $fields,
                        'conds'  => array(),
                        'options' => array(),
                        'join_conds' => $joins,
                );
        }

        public static function newFromRow( $row ) {
                if ( is_array( $row ) && isset( $row['rc_logid'] ) ) {
                        return new RCDatabaseLogEntry( (object) $row );
                } else {
                        return new self( $row );
                }
        }

        // Non-static->

        protected $row;
        protected $performer;

        protected function __construct( $row ) {
                $this->row = $row;
        }

        public function getId() {
                return (int)$this->row->log_id;
        }

        protected function getRawParameters() {
                return $this->row->log_params;
        }

        // LogEntryBase->

        public function isLegacy() {
                // This does the check
                $this->getParameters();
                return $this->legacy;
        }

        // LogEntry->

        public function getType() {
                return $this->row->log_type;
        }

        public function getSubtype() {
                return $this->row->log_action;
        }

        public function getParameters() {
                if ( !isset( $this->params ) ) {
                        $blob = $this->getRawParameters();
                        wfSuppressWarnings();
                        $params = unserialize( $blob );
                        wfRestoreWarnings();
                        if ( $params !== false ) {
                                $this->params = $params;
                                $this->legacy = false;
                        } else {
                                $this->params = $blob === '' ? array() : explode( "\n", $blob );
                                $this->legacy = true;
                        }
                }
                return $this->params;
        }

        public function getPerformer() {
                if( !$this->performer ) {
                        $userId = (int) $this->row->log_user;
                        if ( $userId !== 0 ) { // logged-in users
                                if ( isset( $this->row->user_name ) ) {
                                        $this->performer = User::newFromRow( $this->row );
                                } else {
                                        $this->performer = User::newFromId( $userId );
                                }
                        } else { // IP users
                                $userText = $this->row->log_user_text;
                                $this->performer = User::newFromName( $userText, false );
                        }
                }
                return $this->performer;
        }

        public function getTarget() {
                $namespace = $this->row->log_namespace;
                $page = $this->row->log_title;
                $title = Title::makeTitle( $namespace, $page );
                return $title;
        }

        public function getTimestamp() {
                return wfTimestamp( TS_MW, $this->row->log_timestamp );
        }

        public function getComment() {
                return $this->row->log_comment;
        }

        public function getDeleted() {
                return $this->row->log_deleted;
        }

}

class RCDatabaseLogEntry extends DatabaseLogEntry {

        public function getId() {
                return $this->row->rc_logid;
        }

        protected function getRawParameters() {
                return $this->row->rc_params;
        }

        // LogEntry->

        public function getType() {
                return $this->row->rc_log_type;
        }

        public function getSubtype() {
                return $this->row->rc_log_action;
        }

        public function getPerformer() {
                if( !$this->performer ) {
                        $userId = (int) $this->row->rc_user;
                        if ( $userId !== 0 ) {
                                $this->performer = User::newFromId( $userId );
                        } else {
                                $userText = $this->row->rc_user_text;
                                // Might be an IP, don't validate the username
                                $this->performer = User::newFromName( $userText, false );
                        }
                }
                return $this->performer;
        }

        public function getTarget() {
                $namespace = $this->row->rc_namespace;
                $page = $this->row->rc_title;
                $title = Title::makeTitle( $namespace, $page );
                return $title;
        }

        public function getTimestamp() {
                return wfTimestamp( TS_MW, $this->row->rc_timestamp );
        }

        public function getComment() {
                return $this->row->rc_comment;
        }

        public function getDeleted() {
                return $this->row->rc_deleted;
        }

}

class ManualLogEntry extends LogEntryBase {
        protected $type; 
        protected $subtype; 
        protected $parameters = array(); 
        protected $performer; 
        protected $target; 
        protected $timestamp; 
        protected $comment = ''; 
        protected $deleted; 

        public function __construct( $type, $subtype ) {
                $this->type = $type;
                $this->subtype = $subtype;
        }

        public function setParameters( $parameters ) {
                $this->parameters = $parameters;
        }

        public function setPerformer( User $performer ) {
                $this->performer = $performer;
        }

        public function setTarget( Title $target ) {
                $this->target = $target;
        }

        public function setTimestamp( $timestamp ) {
                $this->timestamp = $timestamp;
        }

        public function setComment( $comment ) {
                $this->comment = $comment;
        }

        public function setDeleted( $deleted ) {
                $this->deleted = $deleted;
        }

        public function insert() {
                global $wgContLang;

                $dbw = wfGetDB( DB_MASTER );
                $id = $dbw->nextSequenceValue( 'logging_log_id_seq' );

                if ( $this->timestamp === null ) {
                        $this->timestamp = wfTimestampNow();
                }

                # Truncate for whole multibyte characters.
                $comment = $wgContLang->truncate( $this->getComment(), 255 );

                $data = array(
                        'log_id' => $id,
                        'log_type' => $this->getType(),
                        'log_action' => $this->getSubtype(),
                        'log_timestamp' => $dbw->timestamp( $this->getTimestamp() ),
                        'log_user' => $this->getPerformer()->getId(),
                        'log_user_text' => $this->getPerformer()->getName(),
                        'log_namespace' => $this->getTarget()->getNamespace(),
                        'log_title' => $this->getTarget()->getDBkey(),
                        'log_page' => $this->getTarget()->getArticleID(),
                        'log_comment' => $comment,
                        'log_params' => serialize( (array) $this->getParameters() ),
                );
                $dbw->insert( 'logging', $data, __METHOD__ );
                $this->id = !is_null( $id ) ? $id : $dbw->insertId();
                return $this->id;
        }

        public function publish( $newId, $to = 'rcandudp' ) {
                $log = new LogPage( $this->getType() );
                if ( $log->isRestricted() ) {
                        return;
                }

                $formatter = LogFormatter::newFromEntry( $this );
                $context = RequestContext::newExtraneousContext( $this->getTarget() );
                $formatter->setContext( $context );

                $logpage = SpecialPage::getTitleFor( 'Log', $this->getType() );
                $user = $this->getPerformer();
                $ip = "";
                if ( $user->isAnon() ) {
                        /*
                         * "MediaWiki default" and friends may have
                         * no IP address in their name
                         */
                        if ( IP::isIPAddress( $user->getName() ) ) {
                                $ip = $user->getName();
                        }
                }
                $rc = RecentChange::newLogEntry(
                        $this->getTimestamp(),
                        $logpage,
                        $user,
                        $formatter->getPlainActionText(),
                        $ip,
                        $this->getType(),
                        $this->getSubtype(),
                        $this->getTarget(),
                        $this->getComment(),
                        serialize( (array) $this->getParameters() ),
                        $newId,
                        $formatter->getIRCActionComment() // Used for IRC feeds
                );

                if ( $to === 'rc' || $to === 'rcandudp' ) {
                        $rc->save( 'pleasedontudp' );
                }

                if ( $to === 'udp' || $to === 'rcandudp' ) {
                        $rc->notifyRC2UDP();
                }
        }

        // LogEntry->

        public function getType() {
                return $this->type;
        }

        public function getSubtype() {
                return $this->subtype;
        }

        public function getParameters() {
                return $this->parameters;
        }

        public function getPerformer() {
                return $this->performer;
        }

        public function getTarget() {
                return $this->target;
        }

        public function getTimestamp() {
                $ts = $this->timestamp !== null ? $this->timestamp : wfTimestampNow();
                return wfTimestamp( TS_MW, $ts );
        }

        public function getComment() {
                return $this->comment;
        }

        public function getDeleted() {
                return (int) $this->deleted;
        }

}