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<?php
/*
* HOMER API
* Homer's LDAP auth
*
* Copyright (C) 2011-2014 Alexandr Dubovikov <alexandr.dubovikov@gmail.com>
* Copyright (C) 2011-2012 Lorenzo Mangani <lorenzo.mangani@gmail.com>
*
* The Initial Developers of the Original Code are
*
* Alexandr Dubovikov <alexandr.dubovikov@gmail.com>
* Lorenzo Mangani <lorenzo.mangani@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace Authentication;
defined( '_HOMEREXEC' ) or die( 'Restricted access' );
class LDAP extends Authentication {
private $_instance = null;
function __construct($utable = NULL)
{
if($utable != NULL) $this->user_table = $utable;
}
public function getContainer()
{
if ($this->_instance === null) {
// extract name of the storage class
}
return $this->_instance;
}
function logIn($param) {
$ds=@ldap_connect(LDAP_HOST,LDAP_PORT);
$_SESSION['loggedin'] = "-1";
// Set LDAP Version, Default is Version 2
@ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, ( LDAP_VERSION) ? LDAP_VERSION : 2);
// Referrals are disabled
@ldap_set_option($ds, LDAP_OPT_REFERRALS, 0 );
// Enable TLS Encryption
if(LDAP_ENCRYPTION == "tls") {
// Documentation says - set to never
putenv('LDAPTLS_REQCERT=never') or die('Failed to setup the env');
@ldap_start_tls($ds);
}
if (defined('LDAP_BIND_USER') && defined('LDAP_BIND_PASSWORD')) {
if (!@ldap_bind( $ds, LDAP_BIND_USER, LDAP_BIND_PASSWORD)) {
return array();
}
}
$r=@ldap_search( $ds, LDAP_BASEDN, LDAP_USERNAME_ATTRIBUTE_OPEN .$param['username'].LDAP_USERNAME_ATTRIBUTE_CLOSE);
if ($r) {
$result = @ldap_get_entries( $ds, $r);
if ($result[0]) {
if (@ldap_bind( $ds, $result[0]['dn'], $param['password']) ) {
if($result[0] != NULL) {
if (defined("LDAP_GROUPDN")) {
if (!$this->check_filegroup_membership($ds, (defined("LDAP_GROUP_ARRAY") && LDAP_GROUP_ARRAY) ? $result[0][LDAP_GROUP_USER][0] : $result[0][LDAP_GROUP_USER])) {
return false;
}
}
if(array_key_exists(LDAP_UID, $result[0])) $user['uid'] = $result[0][LDAP_UID][0];
else $user['uid'] = base_convert($param['username'], 16, 10);
if(array_key_exists(LDAP_GID, $result[0])) $user['gid'] = $result[0][LDAP_GID][0];
else $user['gid'] = 10;
if(array_key_exists(LDAP_FIRSTNAME, $result[0])) $user['firstname'] = $result[0][LDAP_FIRSTNAME][0];
else $user['firstname'] = $param['username'];
if(array_key_exists(LDAP_LASTNAME, $result[0])) $user['lastname'] = $result[0][LDAP_LASTNAME][0];
else $user['lastname'] = $param['username'];
if(array_key_exists(LDAP_EMAIL, $result[0])) $user['email'] = $result[0][LDAP_EMAIL][0];
else $user['email'] = "no@exist.com";
$user['username'] = $param['username'];
$user['grp'] = "users";
$user['lastvisit'] = date('c');
$_SESSION['uid'] = $user['uid'];
$_SESSION['loggedin'] = $user['username'];
$_SESSION['userlevel'] = LDAP_USERLEVEL;
$_SESSION['username'] = $user['username'];
$_SESSION['gid'] = $user['gid'];
$_SESSION['grp'] = "users";
$_SESSION['data'] = $user;
// Assigne Admin Privs, should be read from the LDAP Directory in the future
$ADMIN_USER = split(",", LDAP_ADMIN_USER);
foreach($ADMIN_USER as &$value) {
if ($value == $param['username']) {
$_SESSION['userlevel'] = 1; # LDAP_ADMINLEVEL;
$user['grp'] = "users,admins";
$_SESSION["grp"] = "users,admins";
}
}
return $user;
}
}
}
}
return array();
}
/* posixGroup schema, rfc2307 */
function check_filegroup_membership($ds, $uid) {
$dn = LDAP_GROUPDN;
$attr = LDAP_GROUP_ATTRIBUTE;
$result = @ldap_compare($ds, $dn, $attr, $uid);
if ($result === true) return true;
else return false;
}
//logout function
function logOut(){
$_SESSION['loggedin'] = '-1';
session_destroy();
return;
}
function checkSession () {
if(!isset($_SESSION['loggedin'])) $_SESSION['loggedin'] = '-1';
if($_SESSION['loggedin'] == "-1") return false;
return true;
}
function checkAdmin () {
if(preg_match('/admins/',$_SESSION['grp'])) return true;
else return false;
}
function updateUser($param) {
$this->getUser();
}
function getUser() {
if(!isset($_SESSION['loggedin'])) $_SESSION['loggedin'] = '-1';
if($_SESSION['loggedin'] == "-1") return array();
return $_SESSION['data'];
}
//create random password with 8 alphanumerical characters
function createPassword() {
$chars = "abcdefghijkmnopqrstuvwxyz023456789";
srand((double)microtime()*1000000);
$i = 0;
$pass = '' ;
while ($i <= 7) {
$num = rand() % 33;
$tmp = substr($chars, $num, 1);
$pass = $pass . $tmp;
$i++;
}
return $pass;
}
}
?>
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