<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
Copyright (C) 2003 Roland Gruber
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// ldap.php provides basic functions to connect to the OpenLDAP server and get lists of users and groups.
include_once("../config/config.php");
class Ldap{
// object of Config to access preferences
var $conf;
// server handle
var $server;
// LDAP username and password used for bind
var $username;
var $password;
// Arrays that contain LDAP attributes and their descriptions which are translated
var $ldapUserAttributes;
var $ldapGroupAttributes;
var $ldapHostAttributes;
// constructor
// $config has to be an object of Config (../config/config.php)
function Ldap($config) {
if (is_object($config)) $this->conf = $config;
else { echo _("Ldap->Ldap failed!"); exit;}
// construct arrays with known LDAP attributes
$this->ldapUserAttributes = array (
"uid" => _("User ID"),
"uidNumber" => _("UID Number"),
"gidNumber" => _("GID Number"),
"cn" => _("User Name"),
"host" => _("Allowed Hosts"),
"givenName" => _("First Name"),
"sn" => _("Last Name"),
"homeDirectory" => _("Home Directory"),
"loginShell" => _("Login Shell"),
"mail" => _("E-Mail"),
"gecos" => _("description")
);
$this->ldapGroupAttributes = array (
"cn" => _("Group Name"),
"gidNumber" => _("GID Number"),
"memberUID" => _("Group Members"),
"member" => _("Group Member DNs"),
"description" => _("Group Description")
);
$this->ldapHostAttributes = array (
"uid" => _("Host Username"),
"cn" => _("Host Name"),
"rid" => _("RID (Windows UID)"),
"description" => _("Host Description")
);
}
// returns an array of strings with the DN entries of all users
// $base is optional and specifies the root from where to search for entries
function getUsers($base = "") {
if ($base == "") $base = $this->conf->get_UserSuffix();
// users have the attribute "posixAccount" or "sambaAccount" and do not end with "$"
$filter = "(&(|(objectClass=posixAccount) (objectClass=sambaAccount)) (!(uid=*$)))";
$attrs = array();
$sr = ldap_search($this->server, $base, $filter, $attrs);
$info = ldap_get_entries($this->server, $sr);
$ret = array();
for ($i = 0; $i < $info["count"]; $i++) $ret[$i] = $info[$i]["dn"];
ldap_free_result($sr);
return $ret;
}
// connects to the server using the given username and password
// $base is optional and specifies the root from where to search for entries
// if connect succeeds the server handle is returned
function connect($user, $passwd) {
// close any prior connection
@$this->close();
// do not allow anonymous bind
if ((!$user)||($user == "")) {
echo _("No username was specified!");
exit;
}
// save password und username encrypted
$this->encrypt($user, $passwd);
$this->server = @ldap_connect($this->conf->get_ServerURL());
if ($this->server) {
// use LDAPv3
ldap_set_option($this->server, LDAP_OPT_PROTOCOL_VERSION, 3);
$bind = @ldap_bind($this->server, $user, $passwd);
if ($bind) {
// return server handle
return $this->server;
}
}
}
/**
* @brief Populates any given object with the available attributes in the
* LDAP. The names of the member variables of the object must correspond to
* the attribute names in the LDAP server.
*
* @param in_entry_dn distinguished name of entry in ldap
* @param in_object input object to populate
*
* @return populated object
*/
function getEntry ($in_entry_dn, $in_object) {
// read all variables of given object to $vararray
$vararray = get_object_vars ($in_object);
// set attributefilter only to attributes present in given object
$attributefilter = array();
foreach (array_keys ($vararray) as $varname)
$attributefilter[] = $varname;
// filter doesn't matter (we only read one entry)
$filter = "(objectClass=*)";
$resource = ldap_read ($this->server,
$in_entry_dn, $filter, $attributefilter);
$entry = ldap_first_entry ($this->server, $resource);
foreach (array_keys ($vararray) as $varname)
$in_object->$varname = ldap_get_values ($this->server, $entry, $varname);
return $in_object;
}
// closes connection to server
function close() {
ldap_close($this->server);
}
// searches LDAP for a specific user name
// and returns its DN entry
function search_username($name) {
// users have the attribute "posixAccount" or "sambaAccount" and uid $name
$filter = "(&(|(objectClass=posixAccount) (objectClass=sambaAccount)) (uid=$name))";
$attrs = array();
$sr = ldap_search($this->server, $this->conf->get_UserSuffix(), $filter, $attrs);
$info = ldap_get_entries($this->server, $sr);
// return only first DN entry
$ret = $info[0]["dn"];
ldap_free_result($sr);
return $ret;
}
// returns the LDAP connection handle
function server() {
return $this->server;
}
// closes connection to LDAP server before serialization
function __sleep() {
$this->close();
// define which attributes to save
return array("conf", "username", "password", "ldapUserAttributes", "ldapGroupAttributes", "ldapHostAttributes");
}
// reconnects to LDAP server when deserialized
function __wakeup() {
$data = $this->decrypt();
$this->connect($data[0], $data[1]);
}
// encrypts username and password
function encrypt($username, $password) {
// read key and iv from cookie
$iv = base64_decode($_COOKIE["IV"]);
$key = base64_decode($_COOKIE["Key"]);
// encrypt username and password
$this->username = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $username, MCRYPT_MODE_ECB, $iv));
$this->password = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $password, MCRYPT_MODE_ECB, $iv));
}
// decrypts username and password
function decrypt() {
// read key and iv from cookie
$iv = base64_decode($_COOKIE["IV"]);
$key = base64_decode($_COOKIE["Key"]);
// decrypt username and password
$username = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($this->username), MCRYPT_MODE_ECB, $iv);
$password = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($this->password), MCRYPT_MODE_ECB, $iv);
$ret = array($username, $password);
return $ret;
}
// closes connection to LDAP server and deletes encrypted username/password
function destroy() {
$this->close();
$this->username="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
$this->password="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
}
// returns an array that contains LDAP attribute names and their description
function attributeUserArray() {
return $this->ldapUserAttributes;
}
// returns an array that contains LDAP attribute names and their description
function attributeGroupArray() {
return $this->ldapGroupAttributes;
}
// returns an array that contains LDAP attribute names and their description
function attributeHostArray() {
return $this->ldapHostAttributes;
}
}
?>