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<?php
/**
* The Auth_krb5 class provides an kerberos implementation of the Horde
* authentication system.
*
* This driver requires the 'krb5' PHP extension to be loaded.
* The module can be downloaded here:
* http://www.horde.org/download/php/phpkrb5.tar.gz
*
* Required parameters:<pre>
* None.</pre>
*
* Instead, Kerberos must be correctly configured on your system (e.g.
* /etc/krb5.conf) for this class to work correctly.
*
*
* $Horde: framework/Auth/Auth/krb5.php,v 1.21.10.8 2006/01/01 21:28:07 jan Exp $
*
* Copyright 2002-2006 Michael Slusarz <slusarz@bigworm.colorado.edu>
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Michael Slusarz <slusarz@bigworm.colorado.edu>
* @since Horde 2.2
* @package Horde_Auth
*/
class Auth_krb5 extends Auth {
/**
* An array of capabilities, so that the driver can report which
* operations it supports and which it doesn't.
*
* @var array
*/
var $capabilities = array('add' => false,
'update' => false,
'resetpassword' => false,
'remove' => false,
'list' => false,
'transparent' => false);
/**
* Constructs a new Kerberos authentication object.
*
* @param array $params A hash containing connection parameters.
*/
function Auth_krb5($params = array())
{
if (!Util::extensionExists('krb5')) {
Horde::fatal(_("Auth_krb5: Required krb5 extension not found."), __FILE__, __LINE__);
}
$this->_params = $params;
}
/**
* Find out if a set of login credentials are valid.
*
* @access private
*
* @param string $userId The userId to check.
* @param array $credentials An array of login credentials.
* For kerberos, this must contain a password
* entry.
*
* @return boolean Whether or not the credentials are valid.
*/
function _authenticate($userId, $credentials)
{
if (empty($credentials['password'])) {
Horde::fatal(_("No password provided for Kerberos authentication."), __FILE__, __LINE__);
}
$result = krb5_login($userId, $credentials['password']);
if ($result === KRB5_OK) {
return true;
} else {
if ($result === KRB5_BAD_PASSWORD) {
$this->_setAuthError(AUTH_REASON_MESSAGE, _("Bad kerberos password."));
} elseif ($result === KRB5_BAD_USER) {
$this->_setAuthError(AUTH_REASON_MESSAGE, _("Bad kerberos username."));
} else {
$this->_setAuthError(AUTH_REASON_MESSAGE, _("Kerberos server rejected authentication."));
}
return false;
}
}
}
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