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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Authentication Plugin: IMAP Authentication
* Authenticates against an IMAP server.
*
* @package auth_imap
* @author Martin Dougiamas
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir.'/authlib.php');
/**
* IMAP authentication plugin.
*/
class auth_plugin_imap extends auth_plugin_base {
/**
* Constructor.
*/
public function __construct() {
$this->authtype = 'imap';
$this->config = get_config('auth/imap');
}
/**
* Old syntax of class constructor. Deprecated in PHP7.
*
* @deprecated since Moodle 3.1
*/
public function auth_plugin_imap() {
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
self::__construct();
}
/**
* 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) {
if (! function_exists('imap_open')) {
print_error('auth_imapnotinstalled','mnet');
return false;
}
global $CFG;
$hosts = explode(';', $this->config->host); // Could be multiple hosts
foreach ($hosts as $host) { // Try each host in turn
$host = trim($host);
switch ($this->config->type) {
case 'imapssl':
$host = '{'.$host.":{$this->config->port}/imap/ssl}";
break;
case 'imapcert':
$host = '{'.$host.":{$this->config->port}/imap/ssl/novalidate-cert}";
break;
case 'imaptls':
$host = '{'.$host.":{$this->config->port}/imap/tls}";
break;
case 'imapnosslcert':
$host = '{'.$host.":{$this->config->port}/imap/novalidate-cert}";
break;
default:
$host = '{'.$host.":{$this->config->port}/imap}";
}
error_reporting(0);
$connection = imap_open($host, $username, $password, OP_HALFOPEN);
error_reporting($CFG->debug);
if ($connection) {
imap_close($connection);
return true;
}
}
return false; // No match
}
function prevent_local_passwords() {
return true;
}
/**
* 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 !empty($this->config->changepasswordurl);
}
/**
* Returns the URL for changing the user's pw, or empty if the default can
* be used.
*
* @return moodle_url
*/
function change_password_url() {
if (!empty($this->config->changepasswordurl)) {
return new moodle_url($this->config->changepasswordurl);
} else {
return null;
}
}
/**
* 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) {
global $OUTPUT;
include "config.html";
}
/**
* Processes and stores configuration data for this authentication plugin.
*/
function process_config($config) {
// set to defaults if undefined
if (!isset ($config->host)) {
$config->host = '127.0.0.1';
}
if (!isset ($config->type)) {
$config->type = 'imap';
}
if (!isset ($config->port)) {
$config->port = '143';
}
if (!isset($config->changepasswordurl)) {
$config->changepasswordurl = '';
}
// save settings
set_config('host', $config->host, 'auth/imap');
set_config('type', $config->type, 'auth/imap');
set_config('port', $config->port, 'auth/imap');
set_config('changepasswordurl', $config->changepasswordurl, 'auth/imap');
return true;
}
}