LDAPAuthenticator.inc
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<?php
require_once("$default->fileSystemRoot/lib/authentication/class.AuthLdap.php");
require_once("$default->fileSystemRoot/lib/authentication/Authenticator.inc");
/**
* $Id$
*
* Perform authentication tasks against LDAP compliant directory server.
*
* Copyright (c) 2003 Jam Warehouse http://www.jamwarehouse.com
*
* 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
*
* @version $Revision$
* @author Michael Joseph <michael@jamwarehouse.com>, Jam Warehouse (Pty) Ltd, South Africa
* @package lib.authentication
*/
class LDAPAuthenticator extends Authenticator {
/**
* The LDAP server to connect to
*/
var $sLdapServer;
/**
* The base LDAP DN to perform authentication against
*/
var $sBaseDN;
/**
* The LDAP accessor class
*/
var $oLdap;
/**
* Creates a new instance of the LDAPAuthenticator
*
* @param string the LDAP server to connect to for validation (optional)
* @param string the dn branch to perform the authentication against (optional)
* @param string the ldap server type (optional)
*/
function LDAPAuthenticator($sLdapServer = "", $sLdapDN = "", $sServerType = "", $sLdapDomain = "") {
global $default;
$this->sLdapServer = strlen($sLdapServer) > 0 ? $sLdapServer : $default->ldapServer;
$this->sBaseDN = strlen($sLdapDN) > 0 ? $sLdapDN : $default->ldapRootDn;
$this->sServerType = strlen($sServerType) > 0 ? $sServerType : $default->ldapServerType;
$this->sLdapDomain = strlen($sLdapDomain) > 0 ? $sLdapDomain : $default->ldapDomain;
// initialise and setup ldap class
$this->oLdap = new AuthLdap($this->sLdapServer, $this->sBaseDN, $this->sServerType, $this->sLdapDomain, $default->ldapSearchUser, $default->ldapSearchPassword);
}
/**
* Checks the user's password against the LDAP directory
*
* @param string the name of the user to check
* @param string the password to check
* @return boolean true if the password is correct, else false
*/
function checkPassword($sUserName, $sPassword) {
global $default;
if ($this->oLdap->connect()) {
// lookup dn from username - must exist in db
$sBindDn = lookupField($default->users_table, "ldap_dn", "username", $sUserName);
if ($sBindDn && $sPassword) {
if ( $this->oLdap->authBind($sBindDn, $sPassword) ) {
return true;
} else {
$_SESSION["errorMessage"] = "LDAP error: (" . $this->oLdap->ldapErrorCode . ") " . $this->oLdap->ldapErrorText;
return false;
}
} else {
// no ldap_dn for this user, so reject this authentication attempt
$_SESSION["errorMessage"] = "Username $sUserName does not not exist in the DMS. Please contact the System Administrator for assistance.";
return false;
}
} else {
$_SESSION["errorMessage"] = "LDAP error: (" . $this->oLdap->ldapErrorCode . ") " . $this->oLdap->ldapErrorText;
return false;
}
}
/**
* Searched the directory for a specific user
*
* @param string the username to search for
* @param array the attributes to return from the search
* @return array containing the users found
*/
function getUser($sUserName, $aAttributes) {
global $default;
// connect and search
if ( $this->oLdap->connect() ) {
// search for the users
// append and prepend wildcards
$aUserResults = $this->oLdap->getUsers($sUserName, $aAttributes);
if ($aUserResults) {
// return the array
return $aUserResults;
} else {
// the search failed, return empty array
return array();
}
} else {
$_SESSION["errorMessage"] = "LDAP error: (" . $this->oLdap->ldapErrorCode . ") " . $this->oLdap->ldapErrorText;
return false;
}
}
/**
* Searches the LDAP directory for users matching the supplied search string.
*
* @param string the username to search for
* @param array the attributes to return from the search
* @return array containing the users found
*/
function searchUsers($sUserNameSearch, $aAttributes) {
global $default;
// connect and search
if ( $this->oLdap->connect() ) {
// search for the users
// append and prepend wildcards
$aUserResults = $this->oLdap->getUsers("*" . $sUserNameSearch . "*", $aAttributes);
if ($aUserResults) {
// return the array
return $aUserResults;
} else {
// the search failed, return empty array
return array();
}
} else {
$default->log->error("LDAPAuthentication::searchUsers LDAP error: (" . $this->oLdap->ldapErrorCode . ") " . $this->oLdap->ldapErrorText);
return false;
}
}
}
?>