wiki.techinc.nl/includes/api/ApiQueryAllUsers.php
2010-01-26 20:36:22 +00:00

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PHP

<?php
/*
* Created on July 7, 2007
*
* API for MediaWiki 1.8+
*
* Copyright (C) 2007 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.
* http://www.gnu.org/copyleft/gpl.html
*/
if ( !defined( 'MEDIAWIKI' ) ) {
// Eclipse helper - will be ignored in production
require_once ( 'ApiQueryBase.php' );
}
/**
* Query module to enumerate all registered users.
*
* @ingroup API
*/
class ApiQueryAllUsers extends ApiQueryBase {
public function __construct( $query, $moduleName ) {
parent :: __construct( $query, $moduleName, 'au' );
}
public function execute() {
$db = $this->getDB();
$params = $this->extractRequestParams();
$prop = $params['prop'];
if ( !is_null( $prop ) ) {
$prop = array_flip( $prop );
$fld_blockinfo = isset( $prop['blockinfo'] );
$fld_editcount = isset( $prop['editcount'] );
$fld_groups = isset( $prop['groups'] );
$fld_registration = isset( $prop['registration'] );
} else {
$fld_blockinfo = $fld_editcount = $fld_groups = $fld_registration = false;
}
$limit = $params['limit'];
$this->addTables( 'user', 'u1' );
$useIndex = true;
if ( !is_null( $params['from'] ) )
$this->addWhere( 'u1.user_name >= ' . $db->addQuotes( $this->keyToTitle( $params['from'] ) ) );
if ( !is_null( $params['prefix'] ) )
$this->addWhere( 'u1.user_name' . $db->buildLike( $this->keyToTitle( $params['prefix'] ), $db->anyString() ) );
if ( !is_null( $params['group'] ) ) {
$useIndex = false;
// Filter only users that belong to a given group
$this->addTables( 'user_groups', 'ug1' );
$ug1 = $this->getAliasedName( 'user_groups', 'ug1' );
$this->addJoinConds( array( $ug1 => array( 'INNER JOIN', array( 'ug1.ug_user=u1.user_id',
'ug1.ug_group' => $params['group'] ) ) ) );
}
if ( $params['witheditsonly'] )
$this->addWhere( 'user_editcount > 0' );
if ( $fld_groups ) {
// Show the groups the given users belong to
// request more than needed to avoid not getting all rows that belong to one user
$groupCount = count( User::getAllGroups() );
$sqlLimit = $limit + $groupCount + 1;
$this->addTables( 'user_groups', 'ug2' );
$tname = $this->getAliasedName( 'user_groups', 'ug2' );
$this->addJoinConds( array( $tname => array( 'LEFT JOIN', 'ug2.ug_user=u1.user_id' ) ) );
$this->addFields( 'ug2.ug_group ug_group2' );
} else {
$sqlLimit = $limit + 1;
}
if ( $fld_blockinfo ) {
$this->addTables( 'ipblocks' );
$this->addTables( 'user', 'u2' );
$u2 = $this->getAliasedName( 'user', 'u2' );
$this->addJoinConds( array(
'ipblocks' => array( 'LEFT JOIN', 'ipb_user=u1.user_id' ),
$u2 => array( 'LEFT JOIN', 'ipb_by=u2.user_id' ) ) );
$this->addFields( array( 'ipb_reason', 'u2.user_name AS blocker_name' ) );
}
$this->addOption( 'LIMIT', $sqlLimit );
$this->addFields( 'u1.user_name' );
$this->addFieldsIf( 'u1.user_editcount', $fld_editcount );
$this->addFieldsIf( 'u1.user_registration', $fld_registration );
$this->addOption( 'ORDER BY', 'u1.user_name' );
if ( $useIndex ) {
$u1 = $this->getAliasedName( 'user', 'u1' );
$this->addOption( 'USE INDEX', array( $u1 => 'user_name' ) );
}
$res = $this->select( __METHOD__ );
$data = array ();
$count = 0;
$lastUserData = false;
$lastUser = false;
$result = $this->getResult();
//
// This loop keeps track of the last entry.
// For each new row, if the new row is for different user then the last, the last entry is added to results.
// Otherwise, the group of the new row is appended to the last entry.
// The setContinue... is more complex because of this, and takes into account the higher sql limit
// to make sure all rows that belong to the same user are received.
//
while ( true ) {
$row = $db->fetchObject( $res );
$count++;
if ( !$row || $lastUser !== $row->user_name ) {
// Save the last pass's user data
if ( is_array( $lastUserData ) )
{
$fit = $result->addValue( array( 'query', $this->getModuleName() ),
null, $lastUserData );
if ( !$fit )
{
$this->setContinueEnumParameter( 'from',
$this->keyToTitle( $lastUserData['name'] ) );
break;
}
}
// No more rows left
if ( !$row )
break;
if ( $count > $limit ) {
// We've reached the one extra which shows that there are additional pages to be had. Stop here...
$this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->user_name ) );
break;
}
// Record new user's data
$lastUser = $row->user_name;
$lastUserData = array( 'name' => $lastUser );
if ( $fld_blockinfo ) {
$lastUserData['blockedby'] = $row->blocker_name;
$lastUserData['blockreason'] = $row->ipb_reason;
}
if ( $fld_editcount )
$lastUserData['editcount'] = intval( $row->user_editcount );
if ( $fld_registration )
$lastUserData['registration'] = $row->user_registration ?
wfTimestamp( TS_ISO_8601, $row->user_registration ) : '';
}
if ( $sqlLimit == $count ) {
// BUG! database contains group name that User::getAllGroups() does not return
// TODO: should handle this more gracefully
ApiBase :: dieDebug( __METHOD__,
'MediaWiki configuration error: the database contains more user groups than known to User::getAllGroups() function' );
}
// Add user's group info
if ( $fld_groups && !is_null( $row->ug_group2 ) ) {
$lastUserData['groups'][] = $row->ug_group2;
$result->setIndexedTagName( $lastUserData['groups'], 'g' );
}
}
$db->freeResult( $res );
$result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'u' );
}
public function getAllowedParams() {
return array (
'from' => null,
'prefix' => null,
'group' => array(
ApiBase :: PARAM_TYPE => User::getAllGroups()
),
'prop' => array (
ApiBase :: PARAM_ISMULTI => true,
ApiBase :: PARAM_TYPE => array (
'blockinfo',
'groups',
'editcount',
'registration'
)
),
'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
),
'witheditsonly' => false,
);
}
public function getParamDescription() {
return array (
'from' => 'The user name to start enumerating from.',
'prefix' => 'Search for all page titles that begin with this value.',
'group' => 'Limit users to a given group name',
'prop' => array(
'What pieces of information to include.',
'`groups` property uses more server resources and may return fewer results than the limit.' ),
'limit' => 'How many total user names to return.',
'witheditsonly' => 'Only list users who have made edits',
);
}
public function getDescription() {
return 'Enumerate all registered users';
}
protected function getExamples() {
return array (
'api.php?action=query&list=allusers&aufrom=Y',
);
}
public function getVersion() {
return __CLASS__ . ': $Id$';
}
}