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<?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');
if( !is_null( $params['from'] ) )
$this->addWhere( 'u1.user_name >= ' . $db->addQuotes( $this->keyToTitle( $params['from'] ) ) );
if( isset( $params['prefix'] ) )
$this->addWhere( 'u1.user_name LIKE "' . $db->escapeLike( $this->keyToTitle( $params['prefix'] ) ) . '%"' );
if (!is_null($params['group'])) {
// Filter only users that belong to a given group
$this->addTables('user_groups', 'ug1');
$this->addWhere('ug1.ug_user=u1.user_id');
$this->addWhereFld('ug1.ug_group', $params['group']);
}
if ($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 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');
$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))
$data[] = $lastUserData;
// No more rows left
if (!$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'] = 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);
$result->setIndexedTagName($data, 'u');
$result->addValue('query', $this->getModuleName(), $data);
}
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
)
);
}
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.',
);
}
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: ApiQueryAllUsers.php 36790 2008-06-29 22:26:23Z catrope $';
}
}
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