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<?php
/**
* A central user id lookup service implementation
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* A CentralIdLookup provider that just uses local IDs. Useful if the wiki
* isn't part of a cluster or you're using shared user tables.
*
* @note Shared user table support expects that all wikis involved have
* $wgSharedDB and $wgSharedTables set, and that all wikis involved in the
* sharing are listed in $wgLocalDatabases, and that no wikis not involved in
* the sharing are listed in $wgLocalDatabases.
* @since 1.27
*/
class LocalIdLookup extends CentralIdLookup {
public function isAttached( User $user, $wikiId = null ) {
global $wgSharedDB, $wgSharedTables, $wgLocalDatabases;
// If the user has no ID, it can't be attached
if ( !$user->getId() ) {
return false;
}
// Easy case, we're checking locally
if ( $wikiId === null || $wikiId === wfWikiID() ) {
return true;
}
// Assume that shared user tables are set up as described above, if
// they're being used at all.
return $wgSharedDB !== null &&
in_array( 'user', $wgSharedTables, true ) &&
in_array( $wikiId, $wgLocalDatabases, true );
}
public function lookupCentralIds(
array $idToName, $audience = self::AUDIENCE_PUBLIC, $flags = self::READ_NORMAL
) {
if ( !$idToName ) {
return [];
}
$audience = $this->checkAudience( $audience );
list( $index, $options ) = DBAccessObjectUtils::getDBOptions( $flags );
$db = wfGetDB( $index );
$tables = [ 'user' ];
$fields = [ 'user_id', 'user_name' ];
$where = [
'user_id' => array_map( 'intval', array_keys( $idToName ) ),
];
$join = [];
if ( $audience && !$audience->isAllowed( 'hideuser' ) ) {
$tables[] = 'ipblocks';
$join['ipblocks'] = [ 'LEFT JOIN', 'ipb_user=user_id' ];
$fields[] = 'ipb_deleted';
}
$res = $db->select( $tables, $fields, $where, __METHOD__, $options, $join );
foreach ( $res as $row ) {
$idToName[$row->user_id] = empty( $row->ipb_deleted ) ? $row->user_name : '';
}
return $idToName;
}
public function lookupUserNames(
array $nameToId, $audience = self::AUDIENCE_PUBLIC, $flags = self::READ_NORMAL
) {
if ( !$nameToId ) {
return [];
}
$audience = $this->checkAudience( $audience );
list( $index, $options ) = DBAccessObjectUtils::getDBOptions( $flags );
$db = wfGetDB( $index );
$tables = [ 'user' ];
$fields = [ 'user_id', 'user_name' ];
$where = [
'user_name' => array_map( 'strval', array_keys( $nameToId ) ),
];
$join = [];
if ( $audience && !$audience->isAllowed( 'hideuser' ) ) {
$tables[] = 'ipblocks';
$join['ipblocks'] = [ 'LEFT JOIN', 'ipb_user=user_id' ];
$where[] = 'ipb_deleted = 0 OR ipb_deleted IS NULL';
}
$res = $db->select( $tables, $fields, $where, __METHOD__, $options, $join );
foreach ( $res as $row ) {
$nameToId[$row->user_name] = (int)$row->user_id;
}
return $nameToId;
}
}
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