256 lines
7.9 KiB
PHP
256 lines
7.9 KiB
PHP
<?php
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/*
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$Id$
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This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
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Copyright (C) 2003 Roland Gruber
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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// ldap.inc provides basic functions to connect to the OpenLDAP server.
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include_once("config.inc");
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class Ldap{
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// object of Config to access preferences
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var $conf;
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// server handle
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var $server;
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// LDAP username and password used for bind
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var $username;
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var $password;
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// Arrays that contain LDAP attributes and their descriptions which are translated
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var $ldapUserAttributes;
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var $ldapGroupAttributes;
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var $ldapHostAttributes;
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// constructor
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// $config has to be an object of Config (../config/config.php)
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function Ldap($config) {
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if (is_object($config)) $this->conf = $config;
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else { echo _("Ldap->Ldap failed!"); exit;}
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// construct arrays with known LDAP attributes
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$this->ldapUserAttributes = array (
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"uid" => _("User ID"),
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"uidNumber" => _("UID Number"),
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"gidNumber" => _("GID Number"),
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"cn" => _("User Name"),
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"host" => _("Allowed Hosts"),
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"givenName" => _("First Name"),
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"sn" => _("Last Name"),
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"homeDirectory" => _("Home Directory"),
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"loginShell" => _("Login Shell"),
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"mail" => _("E-Mail"),
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"gecos" => _("description")
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);
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$this->ldapGroupAttributes = array (
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"cn" => _("Group Name"),
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"gidNumber" => _("GID Number"),
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"memberUID" => _("Group Members"),
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"member" => _("Group Member DNs"),
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"description" => _("Group Description")
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);
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$this->ldapHostAttributes = array (
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"uid" => _("Host Username"),
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"cn" => _("Host Name"),
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"rid" => _("RID (Windows UID)"),
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"description" => _("Host Description")
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);
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}
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// connects to the server using the given username and password
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// $base is optional and specifies the root from where to search for entries
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// if connect succeeds the server handle is returned
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function connect($user, $passwd) {
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// close any prior connection
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@$this->close();
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// do not allow anonymous bind
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if ((!$user)||($user == "")||(!$passwd)) {
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echo ("<html><head><title></title>");
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echo ("<link rel=\"stylesheet\" type=\"text/css\" href=\"../style/layout.css\"></head><body>");
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StatusMessage("ERROR", "", _("No username was specified or password is empty!"));
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echo ("<br><br><a href=\"login.php\">" . _("Back to Login") . "</a></body></html>");
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exit;
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}
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// save password und username encrypted
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$this->encrypt($user, $passwd);
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$this->server = @ldap_connect($this->conf->get_ServerURL());
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if ($this->server) {
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// use LDAPv3
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ldap_set_option($this->server, LDAP_OPT_PROTOCOL_VERSION, 3);
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$bind = @ldap_bind($this->server, $user, $passwd);
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if ($bind) {
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// return server handle
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return $this->server;
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}
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}
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}
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// closes connection to server
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function close() {
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ldap_close($this->server);
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}
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// searches LDAP for a specific user name
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// and returns its DN entry
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function search_username($name) {
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if ($this->conf->get_samba3() == "yes") {
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// users have the attribute "posixAccount" or "sambaSamAccount" and uid $name
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$filter = "(&(|(objectClass=posixAccount) (objectClass=sambaSamAccount)) (uid=$name))";
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}
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else {
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// users have the attribute "posixAccount" or "sambaAccount" and uid $name
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$filter = "(&(|(objectClass=posixAccount) (objectClass=sambaAccount)) (uid=$name))";
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}
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$attrs = array();
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$sr = @ldap_search($this->server, $this->conf->get_UserSuffix(), $filter, $attrs);
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if ($sr) {
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$info = ldap_get_entries($this->server, $sr);
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// return only first DN entry
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$ret = $info[0]["dn"];
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ldap_free_result($sr);
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return $ret;
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}
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}
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// returns an array with all organizational units under the given suffix
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function search_units($suffix) {
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$ret = array();
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$sr = @ldap_search($_SESSION["ldap"]->server(), $suffix, "objectClass=organizationalunit", array("DN"));
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if ($sr) {
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$units = ldap_get_entries($_SESSION["ldap"]->server, $sr);
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// extract Dns
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for ($i = 0; $i < sizeof($units); $i++) {
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if ($units[$i]['dn']) $ret[] = $units[$i]['dn'];
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}
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}
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// add root suffix if needed
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$found == false;
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for ($i = 0; $i < sizeof($ret); $i++) { // search suffix case-intensitive
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if (strtolower($suffix) == strtolower($ret[$i])) {
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$found = true;
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break;
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}
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}
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if (!$found) {
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$ret[] = $suffix;
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}
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usort($ret, array($this,"cmp_array"));
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return $ret;
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}
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// returns the LDAP connection handle
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function server() {
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return $this->server;
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}
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// closes connection to LDAP server before serialization
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function __sleep() {
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$this->close();
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// define which attributes to save
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return array("conf", "username", "password", "ldapUserAttributes", "ldapGroupAttributes", "ldapHostAttributes");
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}
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// reconnects to LDAP server when deserialized
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function __wakeup() {
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$data = $this->decrypt();
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$this->connect($data[0], $data[1]);
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}
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// encrypts username and password
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function encrypt($username, $password) {
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// read key and iv from cookie
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$iv = base64_decode($_COOKIE["IV"]);
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$key = base64_decode($_COOKIE["Key"]);
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// encrypt username and password
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$this->username = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $username, MCRYPT_MODE_ECB, $iv));
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$this->password = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $password, MCRYPT_MODE_ECB, $iv));
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}
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// decrypts username and password
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function decrypt() {
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// read key and iv from cookie
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$iv = base64_decode($_COOKIE["IV"]);
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$key = base64_decode($_COOKIE["Key"]);
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// decrypt username and password
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$username = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($this->username), MCRYPT_MODE_ECB, $iv);
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$password = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($this->password), MCRYPT_MODE_ECB, $iv);
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$ret = array($username, $password);
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$ret[0] = str_replace(chr(00), "", $ret[0]);
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$ret[1] = str_replace(chr(00), "", $ret[1]);
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return $ret;
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}
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// closes connection to LDAP server and deletes encrypted username/password
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function destroy() {
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$this->close();
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$this->username="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
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$this->password="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
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}
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// returns an array that contains LDAP attribute names and their description
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function attributeUserArray() {
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return $this->ldapUserAttributes;
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}
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// returns an array that contains LDAP attribute names and their description
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function attributeGroupArray() {
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return $this->ldapGroupAttributes;
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}
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// returns an array that contains LDAP attribute names and their description
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function attributeHostArray() {
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return $this->ldapHostAttributes;
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}
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// helper function to sort the unit DNs
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function cmp_array($a, $b) {
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// split DNs
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$array_a = explode(",", $a);
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$array_b = explode(",", $b);
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$len_a = sizeof($array_a);
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$len_b = sizeof($array_b);
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// check how many parts to compare
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$len = min($len_a, $len_b);
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// compare from last part on
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for ($i = 0; $i < $len; $i++) {
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// get parts to compare
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$part_a = strtolower($array_a[$len_a - $i - 1]);
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$part_b = strtolower($array_b[$len_b - $i - 1]);
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// compare parts
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if ($part_a == $part_b) { // part is identical
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if ($i == ($len - 1)) {
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if ($len_a > $len_b) return 1;
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elseif ($len_a < $len_b) return -1;
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else return 0; // DNs are identical
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}
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}
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elseif ($part_a == max($part_a, $part_b)) return 1;
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else return -1;
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}
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}
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}
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?>
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