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<?php
/**
* External authentication with a vBulletin database.
*
* Copyright © 2009 Aryeh Gregor
*
* 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
*/
/**
* This class supports the proprietary vBulletin forum system
* <http://www.vbulletin.com>, versions 3.5 and up. It calls no functions or
* code, only reads from the database. Example lines to put in
* LocalSettings.php:
*
* $wgExternalAuthType = 'ExternalUser_vB';
* $wgExternalAuthConf = array(
* 'server' => 'localhost',
* 'username' => 'forum',
* 'password' => 'udE,jSqDJ<""p=fI.K9',
* 'dbname' => 'forum',
* 'tablePrefix' => '',
* 'cookieprefix' => 'bb'
* );
*
* @ingroup ExternalUser
*/
class ExternalUser_vB extends ExternalUser {
private $mRow;
protected function initFromName( $name ) {
return $this->initFromCond( array( 'username' => $name ) );
}
protected function initFromId( $id ) {
return $this->initFromCond( array( 'userid' => $id ) );
}
protected function initFromCookie() {
# Try using the session table. It will only have a row if the user has
# an active session, so it might not always work, but it's a lot easier
# than trying to convince PHP to give us vB's $_SESSION.
global $wgExternalAuthConf, $wgRequest;
if ( !isset( $wgExternalAuthConf['cookieprefix'] ) ) {
$prefix = 'bb';
} else {
$prefix = $wgExternalAuthConf['cookieprefix'];
}
if ( $wgRequest->getCookie( 'sessionhash', $prefix ) === null ) {
return false;
}
$db = $this->getDb();
$row = $db->selectRow(
array( 'session', 'user' ),
$this->getFields(),
array(
'session.userid = user.userid',
'sessionhash' => $wgRequest->getCookie( 'sessionhash', $prefix ),
),
__METHOD__
);
if ( !$row ) {
return false;
}
$this->mRow = $row;
return true;
}
private function initFromCond( $cond ) {
$db = $this->getDb();
$row = $db->selectRow(
'user',
$this->getFields(),
$cond,
__METHOD__
);
if ( !$row ) {
return false;
}
$this->mRow = $row;
return true;
}
private function getDb() {
global $wgExternalAuthConf;
return DatabaseBase::factory( 'mysql',
array(
'host' => $wgExternalAuthConf['server'],
'user' => $wgExternalAuthConf['username'],
'password' => $wgExternalAuthConf['password'],
'dbname' => $wgExternalAuthConf['dbname'],
'tablePrefix' => $wgExternalAuthConf['tablePrefix'],
)
);
}
private function getFields() {
return array( 'user.userid', 'username', 'password', 'salt', 'email',
'usergroupid', 'membergroupids' );
}
public function getId() { return $this->mRow->userid; }
public function getName() { return $this->mRow->username; }
public function authenticate( $password ) {
# vBulletin seemingly strips whitespace from passwords
$password = trim( $password );
return $this->mRow->password == md5( md5( $password )
. $this->mRow->salt );
}
public function getPref( $pref ) {
if ( $pref == 'emailaddress' && $this->mRow->email ) {
# TODO: only return if validated?
return $this->mRow->email;
}
return null;
}
public function getGroups() {
$groups = array( $this->mRow->usergroupid );
$groups = array_merge( $groups, explode( ',', $this->mRow->membergroupids ) );
$groups = array_unique( $groups );
return $groups;
}
}
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