]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/api/ApiQueryLogEvents.php
MediaWiki 1.30.2
[autoinstallsdev/mediawiki.git] / includes / api / ApiQueryLogEvents.php
index bdeee9526ed0d5ebaa627c7eddfc77279317f5e2..3066720d1cd2bc1280b13fc5e9c8f43ecb5aae38 100644 (file)
@@ -1,11 +1,10 @@
 <?php
-
-/*
- * Created on Oct 16, 2006
+/**
  *
- * API for MediaWiki 1.8+
  *
- * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
+ * Created on Oct 16, 2006
+ *
+ * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
-if ( !defined( 'MEDIAWIKI' ) ) {
-       // Eclipse helper - will be ignored in production
-       require_once ( 'ApiQueryBase.php' );
-}
-
 /**
  * Query action to List the log events, with optional filtering by various parameters.
  *
@@ -35,79 +31,139 @@ if ( !defined( 'MEDIAWIKI' ) ) {
  */
 class ApiQueryLogEvents extends ApiQueryBase {
 
-       public function __construct( $query, $moduleName ) {
-               parent :: __construct( $query, $moduleName, 'le' );
+       private $commentStore;
+
+       public function __construct( ApiQuery $query, $moduleName ) {
+               parent::__construct( $query, $moduleName, 'le' );
        }
 
+       private $fld_ids = false, $fld_title = false, $fld_type = false,
+               $fld_user = false, $fld_userid = false,
+               $fld_timestamp = false, $fld_comment = false, $fld_parsedcomment = false,
+               $fld_details = false, $fld_tags = false;
+
        public function execute() {
                $params = $this->extractRequestParams();
                $db = $this->getDB();
-               
+               $this->commentStore = new CommentStore( 'log_comment' );
+               $this->requireMaxOneParameter( $params, 'title', 'prefix', 'namespace' );
+
                $prop = array_flip( $params['prop'] );
-               
+
                $this->fld_ids = isset( $prop['ids'] );
                $this->fld_title = isset( $prop['title'] );
                $this->fld_type = isset( $prop['type'] );
                $this->fld_user = isset( $prop['user'] );
+               $this->fld_userid = isset( $prop['userid'] );
                $this->fld_timestamp = isset( $prop['timestamp'] );
                $this->fld_comment = isset( $prop['comment'] );
-               $this->fld_parsedcomment = isset ( $prop['parsedcomment'] );
+               $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
                $this->fld_details = isset( $prop['details'] );
                $this->fld_tags = isset( $prop['tags'] );
 
-               list( $tbl_logging, $tbl_page, $tbl_user ) = $db->tableNamesN( 'logging', 'page', 'user' );
-
-               $hideLogs = LogEventsList::getExcludeClause( $db );
-               if ( $hideLogs !== false )
+               $hideLogs = LogEventsList::getExcludeClause( $db, 'user', $this->getUser() );
+               if ( $hideLogs !== false ) {
                        $this->addWhere( $hideLogs );
+               }
 
                // Order is significant here
-               $this->addTables( array( 'logging', 'user', 'page' ) );
-               $this->addOption( 'STRAIGHT_JOIN' );
-               $this->addJoinConds( array(
-                       'user' => array( 'JOIN',
-                               'user_id=log_user' ),
-                       'page' => array( 'LEFT JOIN',
-                               array(  'log_namespace=page_namespace',
-                                       'log_title=page_title' ) ) ) );
-               $index = array( 'logging' => 'times' ); // default, may change
-
-               $this->addFields( array (
+               $this->addTables( [ 'logging', 'user', 'page' ] );
+               $this->addJoinConds( [
+                       'user' => [ 'LEFT JOIN',
+                               'user_id=log_user' ],
+                       'page' => [ 'LEFT JOIN',
+                               [ 'log_namespace=page_namespace',
+                                       'log_title=page_title' ] ] ] );
+
+               $this->addFields( [
+                       'log_id',
                        'log_type',
                        'log_action',
                        'log_timestamp',
                        'log_deleted',
-               ) );
+               ] );
 
-               $this->addFieldsIf( 'log_id', $this->fld_ids );
                $this->addFieldsIf( 'page_id', $this->fld_ids );
-               $this->addFieldsIf( 'log_user', $this->fld_user );
-               $this->addFieldsIf( 'user_name', $this->fld_user );
-               $this->addFieldsIf( 'log_namespace', $this->fld_title );
-               $this->addFieldsIf( 'log_title', $this->fld_title );
-               $this->addFieldsIf( 'log_comment', $this->fld_comment || $this->fld_parsedcomment );
+               // log_page is the page_id saved at log time, whereas page_id is from a
+               // join at query time.  This leads to different results in various
+               // scenarios, e.g. deletion, recreation.
+               $this->addFieldsIf( 'log_page', $this->fld_ids );
+               $this->addFieldsIf( [ 'log_user', 'log_user_text', 'user_name' ], $this->fld_user );
+               $this->addFieldsIf( 'log_user', $this->fld_userid );
+               $this->addFieldsIf(
+                       [ 'log_namespace', 'log_title' ],
+                       $this->fld_title || $this->fld_parsedcomment
+               );
                $this->addFieldsIf( 'log_params', $this->fld_details );
-               
+
+               if ( $this->fld_comment || $this->fld_parsedcomment ) {
+                       $commentQuery = $this->commentStore->getJoin();
+                       $this->addTables( $commentQuery['tables'] );
+                       $this->addFields( $commentQuery['fields'] );
+                       $this->addJoinConds( $commentQuery['joins'] );
+               }
+
                if ( $this->fld_tags ) {
                        $this->addTables( 'tag_summary' );
-                       $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', 'log_id=ts_log_id' ) ) );
+                       $this->addJoinConds( [ 'tag_summary' => [ 'LEFT JOIN', 'log_id=ts_log_id' ] ] );
                        $this->addFields( 'ts_tags' );
                }
-               
+
                if ( !is_null( $params['tag'] ) ) {
                        $this->addTables( 'change_tag' );
-                       $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN', array( 'log_id=ct_log_id' ) ) ) );
+                       $this->addJoinConds( [ 'change_tag' => [ 'INNER JOIN',
+                               [ 'log_id=ct_log_id' ] ] ] );
                        $this->addWhereFld( 'ct_tag', $params['tag'] );
-                       global $wgOldChangeTagsIndex;
-                       $index['change_tag'] = $wgOldChangeTagsIndex ?  'ct_tag' : 'change_tag_tag_id';
                }
-               
-               if ( !is_null( $params['type'] ) ) {
+
+               if ( !is_null( $params['action'] ) ) {
+                       // Do validation of action param, list of allowed actions can contains wildcards
+                       // Allow the param, when the actions is in the list or a wildcard version is listed.
+                       $logAction = $params['action'];
+                       if ( strpos( $logAction, '/' ) === false ) {
+                               // all items in the list have a slash
+                               $valid = false;
+                       } else {
+                               $logActions = array_flip( $this->getAllowedLogActions() );
+                               list( $type, $action ) = explode( '/', $logAction, 2 );
+                               $valid = isset( $logActions[$logAction] ) || isset( $logActions[$type . '/*'] );
+                       }
+
+                       if ( !$valid ) {
+                               $encParamName = $this->encodeParamName( 'action' );
+                               $this->dieWithError(
+                                       [ 'apierror-unrecognizedvalue', $encParamName, wfEscapeWikiText( $logAction ) ],
+                                       "unknown_$encParamName"
+                               );
+                       }
+
+                       $this->addWhereFld( 'log_type', $type );
+                       $this->addWhereFld( 'log_action', $action );
+               } elseif ( !is_null( $params['type'] ) ) {
                        $this->addWhereFld( 'log_type', $params['type'] );
-                       $index['logging'] = 'type_time';
                }
-               
-               $this->addWhereRange( 'log_timestamp', $params['dir'], $params['start'], $params['end'] );
+
+               $this->addTimestampWhereRange(
+                       'log_timestamp',
+                       $params['dir'],
+                       $params['start'],
+                       $params['end']
+               );
+               // Include in ORDER BY for uniqueness
+               $this->addWhereRange( 'log_id', $params['dir'], null, null );
+
+               if ( !is_null( $params['continue'] ) ) {
+                       $cont = explode( '|', $params['continue'] );
+                       $this->dieContinueUsageIf( count( $cont ) != 2 );
+                       $op = ( $params['dir'] === 'newer' ? '>' : '<' );
+                       $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
+                       $continueId = (int)$cont[1];
+                       $this->dieContinueUsageIf( $continueId != $cont[1] );
+                       $this->addWhere( "log_timestamp $op $continueTimestamp OR " .
+                               "(log_timestamp = $continueTimestamp AND " .
+                               "log_id $op= $continueId)"
+                       );
+               }
 
                $limit = $params['limit'];
                $this->addOption( 'LIMIT', $limit + 1 );
@@ -115,118 +171,141 @@ class ApiQueryLogEvents extends ApiQueryBase {
                $user = $params['user'];
                if ( !is_null( $user ) ) {
                        $userid = User::idFromName( $user );
-                       if ( !$userid )
-                               $this->dieUsage( "User name $user not found", 'param_user' );
-                       $this->addWhereFld( 'log_user', $userid );
-                       $index['logging'] = 'user_time';
+                       if ( $userid ) {
+                               $this->addWhereFld( 'log_user', $userid );
+                       } else {
+                               $this->addWhereFld( 'log_user_text', $user );
+                       }
                }
 
                $title = $params['title'];
                if ( !is_null( $title ) ) {
-                       $titleObj = Title :: newFromText( $title );
-                       if ( is_null( $titleObj ) )
-                               $this->dieUsage( "Bad title value '$title'", 'param_title' );
+                       $titleObj = Title::newFromText( $title );
+                       if ( is_null( $titleObj ) ) {
+                               $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $title ) ] );
+                       }
                        $this->addWhereFld( 'log_namespace', $titleObj->getNamespace() );
                        $this->addWhereFld( 'log_title', $titleObj->getDBkey() );
+               }
 
-                       // Use the title index in preference to the user index if there is a conflict
-                       $index['logging'] = is_null( $user ) ? 'page_time' : array( 'page_time', 'user_time' );
+               if ( $params['namespace'] !== null ) {
+                       $this->addWhereFld( 'log_namespace', $params['namespace'] );
                }
 
-               $this->addOption( 'USE INDEX', $index );
+               $prefix = $params['prefix'];
 
-               // Paranoia: avoid brute force searches (bug 17342)
-               if ( !is_null( $title ) ) {
-                       $this->addWhere( $db->bitAnd( 'log_deleted', LogPage::DELETED_ACTION ) . ' = 0' );
+               if ( !is_null( $prefix ) ) {
+                       if ( $this->getConfig()->get( 'MiserMode' ) ) {
+                               $this->dieWithError( 'apierror-prefixsearchdisabled' );
+                       }
+
+                       $title = Title::newFromText( $prefix );
+                       if ( is_null( $title ) ) {
+                               $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $prefix ) ] );
+                       }
+                       $this->addWhereFld( 'log_namespace', $title->getNamespace() );
+                       $this->addWhere( 'log_title ' . $db->buildLike( $title->getDBkey(), $db->anyString() ) );
                }
-               if ( !is_null( $user ) ) {
-                       $this->addWhere( $db->bitAnd( 'log_deleted', LogPage::DELETED_USER ) . ' = 0' );
+
+               // Paranoia: avoid brute force searches (T19342)
+               if ( $params['namespace'] !== null || !is_null( $title ) || !is_null( $user ) ) {
+                       if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
+                               $titleBits = LogPage::DELETED_ACTION;
+                               $userBits = LogPage::DELETED_USER;
+                       } elseif ( !$this->getUser()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
+                               $titleBits = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
+                               $userBits = LogPage::DELETED_USER | LogPage::DELETED_RESTRICTED;
+                       } else {
+                               $titleBits = 0;
+                               $userBits = 0;
+                       }
+                       if ( ( $params['namespace'] !== null || !is_null( $title ) ) && $titleBits ) {
+                               $this->addWhere( $db->bitAnd( 'log_deleted', $titleBits ) . " != $titleBits" );
+                       }
+                       if ( !is_null( $user ) && $userBits ) {
+                               $this->addWhere( $db->bitAnd( 'log_deleted', $userBits ) . " != $userBits" );
+                       }
                }
 
                $count = 0;
                $res = $this->select( __METHOD__ );
-               while ( $row = $db->fetchObject( $res ) ) {
-                       if ( ++ $count > $limit ) {
-                               // We've reached the one extra which shows that there are additional pages to be had. Stop here...
-                               $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->log_timestamp ) );
+               $result = $this->getResult();
+               foreach ( $res as $row ) {
+                       if ( ++$count > $limit ) {
+                               // We've reached the one extra which shows that there are
+                               // additional pages to be had. Stop here...
+                               $this->setContinueEnumParameter( 'continue', "$row->log_timestamp|$row->log_id" );
                                break;
                        }
 
                        $vals = $this->extractRowInfo( $row );
-                       if ( !$vals )
-                               continue;
-                       $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
-                       if ( !$fit )
-                       {
-                               $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->log_timestamp ) );
+                       $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
+                       if ( !$fit ) {
+                               $this->setContinueEnumParameter( 'continue', "$row->log_timestamp|$row->log_id" );
                                break;
                        }
                }
-               $db->freeResult( $res );
-
-               $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
+               $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'item' );
        }
-       
-       public static function addLogParams( $result, &$vals, $params, $type, $ts ) {
-               $params = explode( "\n", $params );
-               switch ( $type ) {
-                       case 'move':
-                               if ( isset ( $params[0] ) ) {
-                                       $title = Title :: newFromText( $params[0] );
-                                       if ( $title ) {
-                                               $vals2 = array();
-                                               ApiQueryBase :: addTitleInfo( $vals2, $title, "new_" );
-                                               $vals[$type] = $vals2;
-                                       }
-                               }
-                               if ( isset ( $params[1] ) && $params[1] ) {
-                                       $vals[$type]['suppressedredirect'] = '';
-                               }
-                               $params = null;
-                               break;
-                       case 'patrol':
-                               $vals2 = array();
-                               list( $vals2['cur'], $vals2['prev'], $vals2['auto'] ) = $params;
-                               $vals[$type] = $vals2;
-                               $params = null;
-                               break;
-                       case 'rights':
-                               $vals2 = array();
-                               list( $vals2['old'], $vals2['new'] ) = $params;
-                               $vals[$type] = $vals2;
-                               $params = null;
-                               break;
-                       case 'block':
-                               $vals2 = array();
-                               list( $vals2['duration'], $vals2['flags'] ) = $params;
-                               $vals2['expiry'] = wfTimestamp( TS_ISO_8601,
-                                               strtotime( $params[0], wfTimestamp( TS_UNIX, $ts ) ) );
-                               $vals[$type] = $vals2;
-                               $params = null;
-                               break;
-               }
-               if ( !is_null( $params ) ) {
-                       $result->setIndexedTagName( $params, 'param' );
-                       $vals = array_merge( $vals, $params );
-               }
+
+       /**
+        * @deprecated since 1.25 Use LogFormatter::formatParametersForApi instead
+        * @param ApiResult $result
+        * @param array &$vals
+        * @param string $params
+        * @param string $type
+        * @param string $action
+        * @param string $ts
+        * @param bool $legacy
+        * @return array
+        */
+       public static function addLogParams( $result, &$vals, $params, $type,
+               $action, $ts, $legacy = false
+       ) {
+               wfDeprecated( __METHOD__, '1.25' );
+
+               $entry = new ManualLogEntry( $type, $action );
+               $entry->setParameters( $params );
+               $entry->setTimestamp( $ts );
+               $entry->setLegacy( $legacy );
+               $formatter = LogFormatter::newFromEntry( $entry );
+               $vals['params'] = $formatter->formatParametersForApi();
+
                return $vals;
        }
 
        private function extractRowInfo( $row ) {
-               $vals = array();
+               $logEntry = DatabaseLogEntry::newFromRow( $row );
+               $vals = [
+                       ApiResult::META_TYPE => 'assoc',
+               ];
+               $anyHidden = false;
+               $user = $this->getUser();
 
                if ( $this->fld_ids ) {
                        $vals['logid'] = intval( $row->log_id );
-                       $vals['pageid'] = intval( $row->page_id );
                }
 
-               $title = Title::makeTitle( $row->log_namespace, $row->log_title );
+               if ( $this->fld_title || $this->fld_parsedcomment ) {
+                       $title = Title::makeTitle( $row->log_namespace, $row->log_title );
+               }
 
-               if ( $this->fld_title ) {
+               if ( $this->fld_title || $this->fld_ids || $this->fld_details && $row->log_params !== '' ) {
                        if ( LogEventsList::isDeleted( $row, LogPage::DELETED_ACTION ) ) {
-                               $vals['actionhidden'] = '';
-                       } else {
-                               ApiQueryBase::addTitleInfo( $vals, $title );
+                               $vals['actionhidden'] = true;
+                               $anyHidden = true;
+                       }
+                       if ( LogEventsList::userCan( $row, LogPage::DELETED_ACTION, $user ) ) {
+                               if ( $this->fld_title ) {
+                                       ApiQueryBase::addTitleInfo( $vals, $title );
+                               }
+                               if ( $this->fld_ids ) {
+                                       $vals['pageid'] = intval( $row->page_id );
+                                       $vals['logpage'] = intval( $row->log_page );
+                               }
+                               if ( $this->fld_details ) {
+                                       $vals['params'] = LogFormatter::newFromEntry( $logEntry )->formatParametersForApi();
+                               }
                        }
                }
 
@@ -235,39 +314,41 @@ class ApiQueryLogEvents extends ApiQueryBase {
                        $vals['action'] = $row->log_action;
                }
 
-               if ( $this->fld_details && $row->log_params !== '' ) {
-                       if ( LogEventsList::isDeleted( $row, LogPage::DELETED_ACTION ) ) {
-                               $vals['actionhidden'] = '';
-                       } else {
-                               self::addLogParams( $this->getResult(), $vals,
-                                       $row->log_params, $row->log_type,
-                                       $row->log_timestamp );
+               if ( $this->fld_user || $this->fld_userid ) {
+                       if ( LogEventsList::isDeleted( $row, LogPage::DELETED_USER ) ) {
+                               $vals['userhidden'] = true;
+                               $anyHidden = true;
                        }
-               }
+                       if ( LogEventsList::userCan( $row, LogPage::DELETED_USER, $user ) ) {
+                               if ( $this->fld_user ) {
+                                       $vals['user'] = $row->user_name === null ? $row->log_user_text : $row->user_name;
+                               }
+                               if ( $this->fld_userid ) {
+                                       $vals['userid'] = intval( $row->log_user );
+                               }
 
-               if ( $this->fld_user ) {
-                       if ( LogEventsList::isDeleted( $row, LogPage::DELETED_USER ) ) {
-                               $vals['userhidden'] = '';
-                       } else {
-                               $vals['user'] = $row->user_name;
-                               if ( !$row->log_user )
-                                       $vals['anon'] = '';
+                               if ( !$row->log_user ) {
+                                       $vals['anon'] = true;
+                               }
                        }
                }
                if ( $this->fld_timestamp ) {
                        $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->log_timestamp );
                }
-               
-               if ( ( $this->fld_comment || $this->fld_parsedcomment ) && isset( $row->log_comment ) ) {
+
+               if ( $this->fld_comment || $this->fld_parsedcomment ) {
                        if ( LogEventsList::isDeleted( $row, LogPage::DELETED_COMMENT ) ) {
-                               $vals['commenthidden'] = '';
-                       } else {
-                               if ( $this->fld_comment )
-                                       $vals['comment'] = $row->log_comment;
-                               
+                               $vals['commenthidden'] = true;
+                               $anyHidden = true;
+                       }
+                       if ( LogEventsList::userCan( $row, LogPage::DELETED_COMMENT, $user ) ) {
+                               $comment = $this->commentStore->getComment( $row )->text;
+                               if ( $this->fld_comment ) {
+                                       $vals['comment'] = $comment;
+                               }
+
                                if ( $this->fld_parsedcomment ) {
-                                       global $wgUser;
-                                       $vals['parsedcomment'] = $wgUser->getSkin()->formatComment( $row->log_comment, $title );
+                                       $vals['parsedcomment'] = Linker::formatComment( $comment, $title );
                                }
                        }
                }
@@ -275,104 +356,127 @@ class ApiQueryLogEvents extends ApiQueryBase {
                if ( $this->fld_tags ) {
                        if ( $row->ts_tags ) {
                                $tags = explode( ',', $row->ts_tags );
-                               $this->getResult()->setIndexedTagName( $tags, 'tag' );
+                               ApiResult::setIndexedTagName( $tags, 'tag' );
                                $vals['tags'] = $tags;
                        } else {
-                               $vals['tags'] = array();
+                               $vals['tags'] = [];
                        }
                }
-               
+
+               if ( $anyHidden && LogEventsList::isDeleted( $row, LogPage::DELETED_RESTRICTED ) ) {
+                       $vals['suppressed'] = true;
+               }
+
                return $vals;
        }
-       
+
+       /**
+        * @return array
+        */
+       private function getAllowedLogActions() {
+               $config = $this->getConfig();
+               return array_keys( array_merge(
+                       $config->get( 'LogActions' ),
+                       $config->get( 'LogActionsHandlers' )
+               ) );
+       }
+
        public function getCacheMode( $params ) {
+               if ( $this->userCanSeeRevDel() ) {
+                       return 'private';
+               }
                if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
-                       // formatComment() calls wfMsg() among other things
+                       // formatComment() calls wfMessage() among other things
                        return 'anon-public-user-private';
-               } else {
+               } elseif ( LogEventsList::getExcludeClause( $this->getDB(), 'user', $this->getUser() )
+                       === LogEventsList::getExcludeClause( $this->getDB(), 'public' )
+               ) { // Output can only contain public data.
                        return 'public';
+               } else {
+                       return 'anon-public-user-private';
                }
        }
 
-       public function getAllowedParams() {
-               global $wgLogTypes;
-               return array (
-                       'prop' => array (
-                               ApiBase :: PARAM_ISMULTI => true,
-                               ApiBase :: PARAM_DFLT => 'ids|title|type|user|timestamp|comment|details',
-                               ApiBase :: PARAM_TYPE => array (
+       public function getAllowedParams( $flags = 0 ) {
+               $config = $this->getConfig();
+               $ret = [
+                       'prop' => [
+                               ApiBase::PARAM_ISMULTI => true,
+                               ApiBase::PARAM_DFLT => 'ids|title|type|user|timestamp|comment|details',
+                               ApiBase::PARAM_TYPE => [
                                        'ids',
                                        'title',
                                        'type',
                                        'user',
+                                       'userid',
                                        'timestamp',
                                        'comment',
                                        'parsedcomment',
                                        'details',
                                        'tags'
-                               )
-                       ),
-                       'type' => array (
-                               ApiBase :: PARAM_TYPE => $wgLogTypes
-                       ),
-                       'start' => array (
-                               ApiBase :: PARAM_TYPE => 'timestamp'
-                       ),
-                       'end' => array (
-                               ApiBase :: PARAM_TYPE => 'timestamp'
-                       ),
-                       'dir' => array (
-                               ApiBase :: PARAM_DFLT => 'older',
-                               ApiBase :: PARAM_TYPE => array (
+                               ],
+                               ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
+                       ],
+                       'type' => [
+                               ApiBase::PARAM_TYPE => $config->get( 'LogTypes' )
+                       ],
+                       'action' => [
+                               // validation on request is done in execute()
+                               ApiBase::PARAM_TYPE => ( $flags & ApiBase::GET_VALUES_FOR_HELP )
+                                       ? $this->getAllowedLogActions()
+                                       : null
+                       ],
+                       'start' => [
+                               ApiBase::PARAM_TYPE => 'timestamp'
+                       ],
+                       'end' => [
+                               ApiBase::PARAM_TYPE => 'timestamp'
+                       ],
+                       'dir' => [
+                               ApiBase::PARAM_DFLT => 'older',
+                               ApiBase::PARAM_TYPE => [
                                        'newer',
                                        'older'
-                               )
-                       ),
-                       'user' => null,
+                               ],
+                               ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
+                       ],
+                       'user' => [
+                               ApiBase::PARAM_TYPE => 'user',
+                       ],
                        'title' => null,
+                       'namespace' => [
+                               ApiBase::PARAM_TYPE => 'namespace',
+                               ApiBase::PARAM_EXTRA_NAMESPACES => [ NS_MEDIA, NS_SPECIAL ],
+                       ],
+                       'prefix' => [],
                        'tag' => null,
-                       'limit' => array (
-                               ApiBase :: PARAM_DFLT => 10,
-                               ApiBase :: PARAM_TYPE => 'limit',
-                               ApiBase :: PARAM_MIN => 1,
-                               ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
-                               ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
-                       )
-               );
-       }
-
-       public function getParamDescription() {
-               return array (
-                       'prop' => 'Which properties to get',
-                       'type' => 'Filter log entries to only this type(s)',
-                       'start' => 'The timestamp to start enumerating from.',
-                       'end' => 'The timestamp to end enumerating.',
-                       'dir' => 'In which direction to enumerate.',
-                       'user' => 'Filter entries to those made by the given user.',
-                       'title' => 'Filter entries to those related to a page.',
-                       'limit' => 'How many total event entries to return.',
-                       'tag' => 'Only list event entries tagged with this tag.',
-               );
-       }
+                       'limit' => [
+                               ApiBase::PARAM_DFLT => 10,
+                               ApiBase::PARAM_TYPE => 'limit',
+                               ApiBase::PARAM_MIN => 1,
+                               ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
+                               ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
+                       ],
+                       'continue' => [
+                               ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
+                       ],
+               ];
+
+               if ( $config->get( 'MiserMode' ) ) {
+                       $ret['prefix'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
+               }
 
-       public function getDescription() {
-               return 'Get events from logs.';
-       }
-       
-       public function getPossibleErrors() {
-               return array_merge( parent::getPossibleErrors(), array(
-                       array( 'code' => 'param_user', 'info' => 'User name $user not found' ),
-                       array( 'code' => 'param_title', 'info' => 'Bad title value \'title\'' ),
-               ) );
+               return $ret;
        }
 
-       protected function getExamples() {
-               return array (
-                       'api.php?action=query&list=logevents'
-               );
+       protected function getExamplesMessages() {
+               return [
+                       'action=query&list=logevents'
+                               => 'apihelp-query+logevents-example-simple',
+               ];
        }
 
-       public function getVersion() {
-               return __CLASS__ . ': $Id: ApiQueryLogEvents.php 69932 2010-07-26 08:03:21Z tstarling $';
+       public function getHelpUrls() {
+               return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Logevents';
        }
 }