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<?php
/**
* @author Martin Dougiamas
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package moodle multiauth
*
* Authentication Plugin: PAM Authentication
*
* PAM (Pluggable Authentication Modules) for Moodle
*
* Description:
* Authentication by using the PHP4 PAM module:
* http://www.math.ohio-state.edu/~ccunning/pam_auth/
*
* Version 0.3 2006/09/07 by Jonathan Harker (plugin class)
* Version 0.2: 2004/09/01 by Martin V�geli (stable version)
* Version 0.1: 2004/08/30 by Martin V�geli (first draft)
*
* Contact: martinvoegeli@gmx.ch
* Website 1: http://elearning.zhwin.ch/
* Website 2: http://birdy1976.com/
*
* License: GPL License v2
*
* 2006-08-31 File created.
*/
if (!defined('MOODLE_INTERNAL')) {
die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page
}
require_once($CFG->libdir.'/authlib.php');
/**
* PAM authentication plugin.
*/
class auth_plugin_pam extends auth_plugin_base {
/**
* Store error messages from pam authentication attempts.
*/
var $lasterror;
/**
* Constructor.
*/
function auth_plugin_pam() {
$this->authtype = 'pam';
$this->config = get_config('auth/pam');
$this->errormessage = '';
}
/**
* Returns true if the username and password work and false if they are
* wrong or don't exist.
*
* @param string $username The username (with system magic quotes)
* @param string $password The password (with system magic quotes)
* @return bool Authentication success or failure.
*/
function user_login ($username, $password) {
// variable to store possible errors during authentication
$errormessage = str_repeat(' ', 2048);
// just for testing and debugging
// error_reporting(E_ALL);
// call_time_pass_reference of errormessage is deprecated - throws warnings in multiauth
//if (pam_auth($username, $password, &$errormessage)) {
if (pam_auth(stripslashes($username), stripslashes($password))) {
return true;
}
else {
$this->lasterror = $errormessage;
return false;
}
}
/**
* Returns true if this authentication plugin is 'internal'.
*
* @return bool
*/
function is_internal() {
return false;
}
/**
* Returns true if this authentication plugin can change the user's
* password.
*
* @return bool
*/
function can_change_password() {
return false;
}
/**
* Prints a form for configuring this authentication plugin.
*
* This function is called from admin/auth.php, and outputs a full page with
* a form for configuring this plugin.
*
* @param array $page An object containing all the data for this page.
*/
function config_form($config, $err, $user_fields) {
include "config.html";
}
/**
* Processes and stores configuration data for this authentication plugin.
*/
function process_config($config) {
return true;
}
}
?>
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