chamilo-lms2/main/auth/ldap/authldap.php

<?php
/* For licensing terms, see /license.txt */
/**
*    LDAP module functions
*
*    If the application uses LDAP, these functions are used
*    for logging in, searching user info, adding this info
*    to the Chamilo database...
    - function ldap_authentication_check()
    - function ldap_find_user_info()
    - function ldap_login()
    - function ldap_put_user_info_locally()
    - ldap_set_version()

    known bugs
    ----------
    - (fixed 18 june 2003) code has been internationalized
    - (fixed 07/05/2003) fixed some non-relative urls or includes
    - (fixed 28/04/2003) we now use global config.inc variables instead of local ones
    - (fixed 22/04/2003) the last name of a user was restricted to the first part
    - (fixed 11/04/2003) the user was never registered as a course manager

    version history
    ---------------
    This historial has been discontinued. Please use the Mercurial logs for more
    3.2 - updated to allow for specific term search for teachers identification
    3.1 - updated code to use database settings, to respect coding conventions
 *        as much as possible (camel-case removed) and to allow for non-anonymous login
    3.0    - updated to use ldap_var.inc.php instead of ldap_var.inc (deprecated)
        (November 2003)
    2.9    - further changes for new login procedure
        - (busy) translating french functions to english
        (October 2003)
    2.8    - adapted for new Claroline login procedure
        - ldap package now becomes a standard, in auth/ldap
    2.7 - uses more standard LDAP field names: mail, sn, givenname (or cn)
            instead of mail, preferredsn, preferredgivenname
            there are still
        - code cleanup
        - fixed bug: dc = xx, dc = yy was configured for UGent
            and put literally in the code, this is now a variable
            in configuration.php ($LDAPbasedn)

    with thanks to
    - Stefan De Wannemacker (Ghent University)
    - Universite Jean Monet (J Dubois / Michel Courbon)
    - Michel Panckoucke for reporting and fixing a bug
    - Patrick Cool: fixing security hole

    *    @author Roan Embrechts
    *    @version 3.0
    *    @package chamilo.auth.ldap
 * Note:
 * If you are using a firewall, you might need to check port 389 is open in
 * order for Chamilo to communicate with the LDAP server.
 * See http://support.chamilo.org/issues/4675 for details.
 */
/**
 * Inclusions
 */
use \ChamiloSession as Session;

/**
 * Code
 */
require_once api_get_path(SYS_CODE_PATH).'auth/external_login/ldap.inc.php';
require 'ldap_var.inc.php';
/**
 *    Check login and password with LDAP
 *    @return true when login & password both OK, false otherwise
 *    @author Roan Embrechts (based on code from Universit� Jean Monet)
 */

function ldap_login($login, $password) {
    //error_log('Entering ldap_login('.$login.','.$password.')',0);
    $res = ldap_authentication_check($login, $password);

    // res=-1 -> the user does not exist in the ldap database
    // res=1 -> invalid password (user does exist)

    if ($res==1) { //WRONG PASSWORD
        //$errorMessage = "LDAP User or password incorrect, try again.<br />";
        if (isset($log)) unset($log); if (isset($uid)) unset($uid);
        $loginLdapSucces = false;
    }
    if ($res==-1) { //WRONG USERNAME
        //$errorMessage =  "LDAP User or password incorrect, try again.<br />";
        $login_ldap_success = false;
    }
    if ($res==0) { //LOGIN & PASSWORD OK - SUCCES
        //$errorMessage = "Successful login w/ LDAP.<br>";
        $login_ldap_success = true;
    }

    //$result = "This is the result: $errorMessage";
    $result = $login_ldap_success;
    return $result;
}

/**
 *    Find user info in LDAP
 *    @return array Array with indexes: "firstname", "name", "email", "employeenumber"
 *    @author Stefan De Wannemacker
 *    @author Roan Embrechts
 */
function ldap_find_user_info ($login) {
    //error_log('Entering ldap_find_user_info('.$login.')',0);
    global $ldap_host, $ldap_port, $ldap_basedn, $ldap_rdn, $ldap_pass, $ldap_search_dn;
    // basic sequence with LDAP is connect, bind, search,
    // interpret search result, close connection

    //echo "Connecting ...";
    $ldap_connect = ldap_connect( $ldap_host, $ldap_port);
    ldap_set_version($ldap_connect);
    if ($ldap_connect) {
        //echo " Connect to LDAP server successful ";
        //echo "Binding ...";
        $ldap_bind = false;
        $ldap_bind_res = ldap_handle_bind($ldap_connect,$ldap_bind);
        if ($ldap_bind_res) {
            //echo " LDAP bind successful... ";
            //echo " Searching for uid... ";
            // Search surname entry
            //OLD: $sr=ldap_search($ldapconnect,"dc=rug, dc=ac, dc=be", "uid=$login");
            //echo "<p> ldapDc = '$LDAPbasedn' </p>";
            if(!empty($ldap_search_dn)) {
                $sr=ldap_search($ldap_connect, $ldap_search_dn, "uid=$login");
            } else {
                $sr=ldap_search($ldap_connect, $ldap_basedn, "uid=$login");
            }
            //echo " Search result is ".$sr;
            //echo " Number of entries returned is ".ldap_count_entries($ldapconnect,$sr);
            //echo " Getting entries ...";
            $info = ldap_get_entries($ldap_connect, $sr);
            //echo "Data for ".$info["count"]." items returned:<p>";
        } else {
            //echo "LDAP bind failed...";
        }
        //echo "Closing LDAP connection<hr>";
        ldap_close($ldap_connect);
    } else {
        //echo "<h3>Unable to connect to LDAP server</h3>";
    }
    //DEBUG: $result["firstname"] = "Jan"; $result["name"] = "De Test"; $result["email"] = "email@ugent.be";
    $result["firstname"] = $info[0]["cn"][0];
    $result["name"] = $info[0]["sn"][0];
    $result["email"] = $info[0]["mail"][0];
    $tutor_field = api_get_setting('ldap_filled_tutor_field');
    $result[$tutor_field] = $info[0][$tutor_field]; //employeenumber by default

    return $result;
}


/**
*    This function uses the data from ldap_find_user_info()
*    to add the userdata to Chamilo
*    "firstname", "name", "email", "isEmployee"
*    @author Roan Embrechts
*/
function ldap_put_user_info_locally($login, $info_array) {
    //error_log('Entering ldap_put_user_info_locally('.$login.',info_array)',0);
    global $ldap_pass_placeholder;
    global $submitRegistration, $submit, $uname, $email,
            $nom, $prenom, $password, $password1, $status;
    global $platformLanguage;
    global $loginFailed, $uidReset, $_user;

    /*----------------------------------------------------------
        1. set the necessary variables
    ------------------------------------------------------------ */
    $uname      = $login;
    $email      = $info_array["email"];
    $nom        = $info_array["name"];
    $prenom     = $info_array["firstname"];
    $password   = $ldap_pass_placeholder;
    $password1  = $ldap_pass_placeholder;
    $official_code = '';

    define ("STUDENT",5);
    define ("COURSEMANAGER",1);

    $tutor_field = api_get_setting('ldap_filled_tutor_field');
    $tutor_value = api_get_setting('ldap_filled_tutor_field_value');
    if(empty($tutor_field)) {
        $status = STUDENT;
    } else {
        if(empty($tutor_value)) {
            //in this case, we are assuming that the admin didn't give a criteria
            // so that if the field is not empty, it is a tutor
            if(!empty($info_array[$tutor_field])) {
                $status = COURSEMANAGER;
            } else {
                $status = STUDENT;
            }
        } else {
            //the tutor_value is filled, so we need to check the contents of the LDAP field
            if (is_array($info_array[$tutor_field]) && in_array($tutor_value,$info_array[$tutor_field])) {
                $status = COURSEMANAGER;
            } else {
                $status = STUDENT;
            }
        }
    }
    //$official_code = xxx; //example: choose an attribute

    /*----------------------------------------------------------
        2. add info to Chamilo
    ------------------------------------------------------------ */

    $language = api_get_setting('language.platform_language');
    if (empty($language)) { $language = 'english'; }
    $_userId = UserManager::create_user($prenom, $nom, $status,
                     $email, $uname, $password, $official_code,
                     $language,'', '', 'ldap');

    //echo "new user added to Chamilo, id = $_userId";

    //user_id, username, password, auth_source

    /*----------------------------------------------------------
        3. register session
    ------------------------------------------------------------ */

    $uData['user_id'] = $_userId;
    $uData['username'] = $uname;
    $uData['auth_source'] = "ldap";

    $loginFailed = false;
    $uidReset = true;
    $_user['user_id'] = $uData['user_id'];
    Session::write('_uid', $_uid);
}

/**
 * The code of UGent uses these functions to authenticate.
 * function AuthVerifEnseignant ($uname, $passwd)
 * function AuthVerifEtudiant ($uname, $passwd)
 * function Authentif ($uname, $passwd)
 * @todo translate the comments and code to english
 * @todo let these functions use the variables in config.inc instead of ldap_var.inc
 */
/**
 * Checks the existence of a member in LDAP
 * @param string username input on keyboard
 * @param string password given by user
 * @return int 0 if authentication succeeded, 1 if password was incorrect, -1 if it didn't belong to LDAP
 */
function ldap_authentication_check ($uname, $passwd) {
    //error_log('Entering ldap_authentication_check('.$uname.','.$passwd.')',0);
    global $ldap_host, $ldap_port, $ldap_basedn, $ldap_host2, $ldap_port2,$ldap_rdn,$ldap_pass;
    //error_log('Entering ldap_authentication_check('.$uname.','.$passwd.')',0);
    // Establish anonymous connection with LDAP server
    // Etablissement de la connexion anonyme avec le serveur LDAP
    $ds=ldap_connect($ldap_host,$ldap_port);
    ldap_set_version($ds);

    $test_bind = false;
    $test_bind_res = ldap_handle_bind($ds,$test_bind);
    //if problem, use the replica
    if ($test_bind_res===false) {
        $ds=ldap_connect($ldap_host2,$ldap_port2);
        ldap_set_version($ds);
    } else {
        //error_log('Connected to server '.$ldap_host);
    }
    if ($ds!==false) {
        //Creation of filter containing values input by the user
        // Here it might be necessary to use $filter="(samaccountName=$uname)"; - see http://support.chamilo.org/issues/4675
        $filter="(uid=$uname)";
        // Open anonymous LDAP connection
        $result=false;
        $ldap_bind_res = ldap_handle_bind($ds,$result);
	// Executing the search with the $filter parametr
        //error_log('Searching for '.$filter.' on LDAP server',0);
        $sr=ldap_search($ds,$ldap_basedn,$filter);
        $info = ldap_get_entries($ds, $sr);
        $dn=($info[0]["dn"]);
        // debug !!    echo"<br> dn = $dn<br> pass = $passwd<br>";
        // closing 1st connection
        ldap_close($ds);
    }

    // test the Distinguish Name from the 1st connection
    if ($dn=="") {
        return (-1);        // doesn't belong to the addressbook
    }
    //bug ldap.. if password empty, return 1!
    if ($passwd=="") {
        return(1);
    }
    // Opening 2nd LDAP connection : Connection user for password check
    $ds=ldap_connect($ldap_host,$ldap_port);
    ldap_set_version($ds);
    if (!$test_bind) {
        $ds=ldap_connect($ldap_host2,$ldap_port2);
        ldap_set_version($ds);
    }
    // return in case of wrong password connection error
    if (@ldap_bind( $ds, $dn , $passwd) === false) {
        return (1); // invalid password
    } else {// connection successfull
        return (0);
    }
} // end of check
/**
 * Set the protocol version with version from config file (enables LDAP version 3)
 * @param    resource    The LDAP connexion resource, passed by reference.
 * @return    void
 */
function ldap_set_version(&$resource) {
    //error_log('Entering ldap_set_version(&$resource)',0);
    global $ldap_version;
    if ($ldap_version>2) {
        if (ldap_set_option($resource, LDAP_OPT_PROTOCOL_VERSION, 3)) {
            //ok - don't do anything
        } else {
            //failure - should switch back to version 2 by default
        }
    }
}
/**
 * Handle bind (whether authenticated or not)
 * @param    resource    The LDAP handler to which we are connecting (by reference)
 * @param    resource    The LDAP bind handler we will be modifying
 * @return    boolean        Status of the bind assignment. True for success, false for failure.
 */
function ldap_handle_bind(&$ldap_handler,&$ldap_bind) {
    //error_log('Entering ldap_handle_bind(&$ldap_handler,&$ldap_bind)',0);
    global $ldap_rdn,$ldap_pass, $extldap_config;
    $ldap_rdn = $extldap_config['admin_dn'];
    $ldap_pass = $extldap_config['admin_password'];
    if (!empty($ldap_rdn) and !empty($ldap_pass)) {
        //error_log('Trying authenticated login :'.$ldap_rdn.'/'.$ldap_pass,0);
        $ldap_bind = ldap_bind($ldap_handler,$ldap_rdn,$ldap_pass);
        if (!$ldap_bind) {
            //error_log('Authenticated login failed',0);
            //try in anonymous mode, you never know...
            $ldap_bind = ldap_bind($ldap_handler);
        }
    } else {
        // this is an "anonymous" bind, typically read-only access:
        $ldap_bind = ldap_bind($ldap_handler);
    }
    if (!$ldap_bind) {
        return false;
    } else {
        //error_log('Login finally OK',0);
        return true;
    }
}
/**
 * Get the total number of users on the platform
 * @see SortableTable#get_total_number_of_items()
 * @author    Mustapha Alouani
 */
function ldap_get_users() {

    global $ldap_basedn, $ldap_host, $ldap_port, $ldap_rdn, $ldap_pass, $ldap_search_dn, $extldap_user_correspondance;

    $keyword_firstname = isset($_GET['keyword_firstname']) ? trim(Database::escape_string($_GET['keyword_firstname'])): '';
    $keyword_lastname = isset($_GET['keyword_lastname']) ? trim(Database::escape_string($_GET['keyword_lastname'])) : '';
    $keyword_username = isset($_GET['keyword_username']) ? trim(Database::escape_string($_GET['keyword_username'])) : '';
    $keyword_type = isset($_GET['keyword_type']) ? Database::escape_string($_GET['keyword_type']) : '';

    $ldap_query=array();

    if ($keyword_username != "") {
        $ldap_query[] = str_replace('%username%', $keyword_username, $ldap_search_dn);
    } else {
        if ($keyword_lastname!=""){
            $ldap_query[]="(".$extldap_user_correspondance['lastname']."=".$keyword_lastname."*)";
        }
        if ($keyword_firstname!="") {
            $ldap_query[]="(".$extldap_user_correspondance['firstname']."=".$keyword_firstname."*)";
        }
    }
    if ($keyword_type !="" && $keyword_type !="all") {
        $ldap_query[]="(employeeType=".$keyword_type.")";
    }

    if (count($ldap_query)>1){
        $str_query.="(& ";
        foreach ($ldap_query as $query){
            $str_query.=" $query";
        }
        $str_query.=" )";
    } else {
        $str_query= count($ldap_query) > 0 ? $ldap_query[0] : null;
    }

    $ds = ldap_connect($ldap_host, $ldap_port);
    ldap_set_version($ds);
    if ($ds && count($ldap_query)>0) {
        $r = false;
        $res = ldap_handle_bind($ds, $r);
        //$sr = ldap_search($ds, "ou=test-ou,$ldap_basedn", $str_query);
        $sr = ldap_search($ds, $ldap_basedn, $str_query);
        //echo "Le nombre de resultats est : ".ldap_count_entries($ds,$sr)."<p>";
        $info = ldap_get_entries($ds, $sr);
        return $info;

    } else {
        if (count($ldap_query)!=0)
            Display :: display_error_message(get_lang('LDAPConnectionError'));
        return array();
    }
}

/**
 * Get the total number of users on the platform
 * @see SortableTable#get_total_number_of_items()
 * @author    Mustapha Alouani
 */
function ldap_get_number_of_users() {
    $info = ldap_get_users();
    if (count($info)>0) {
        return $info['count'];
    } else {
        return 0;
    }
}

/**
 * Get the users to display on the current page.
 * @see SortableTable#get_table_data($from)
 * @author    Mustapha Alouani
 */
function ldap_get_user_data($from, $number_of_items, $column, $direction) {

    global $extldap_user_correspondance;

    $users = array();
    $is_western_name_order = api_is_western_name_order();
    if (isset($_GET['submit'])) {
        $info = ldap_get_users();
        if ($info['count']>0) {
            for ($key = 0; $key < $info["count"]; $key ++) {
                $user=array();
                // Get uid from dn
                //YW: this might be a variation between LDAP 2 and LDAP 3, but in LDAP 3, the uid is in
                //the corresponding index of the array
                //$dn_array=ldap_explode_dn($info[$key]["dn"],1);
                //$user[] = $dn_array[0]; // uid is first key
                //$user[] = $dn_array[0]; // uid is first key
                $user[] = $info[$key][$extldap_user_correspondance['username']][0];
                $user[] = $info[$key][$extldap_user_correspondance['username']][0];
                if ($is_western_name_order) {
                    $user[] = api_convert_encoding($info[$key][$extldap_user_correspondance['firstname']][0], api_get_system_encoding(), 'UTF-8');
                    $user[] = api_convert_encoding($info[$key][$extldap_user_correspondance['lastname']][0], api_get_system_encoding(), 'UTF-8');
                } else {
                    $user[] = api_convert_encoding($info[$key][$extldap_user_correspondance['firstname']][0], api_get_system_encoding(), 'UTF-8');
                    $user[] = api_convert_encoding($info[$key][$extldap_user_correspondance['lastname']][0], api_get_system_encoding(), 'UTF-8');
                }
                $user[] = $info[$key]['mail'][0];
                $user[] = $info[$key][$extldap_user_correspondance['username']][0];
                $users[] = $user;
            }
        } else {
            Display :: display_error_message(get_lang('NoUser'));
        }
    }
    return $users;
}

/**
 * Build the modify-column of the table
 * @param int $user_id The user id
 * @param string $url_params
 * @return string Some HTML-code with modify-buttons
 * @author    Mustapha Alouani
 */
function modify_filter($user_id,$url_params, $row) {
    $query_string="id[]=".$row[0];
    if (!empty($_GET['id_session'])){
        $query_string .= '&amp;id_session='.Security::remove_XSS($_GET['id_session']);
    }
    //$url_params_id="id=".$row[0];
    $result = '<a href="ldap_users_list.php?action=add_user&amp;user_id='.$user_id.'&amp;'.$query_string.'&amp;sec_token='.$_SESSION['sec_token'].'"  onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang("ConfirmYourChoice"), ENT_QUOTES, api_get_system_encoding()))."'".')) return false;">'.Display::return_icon('add_user.gif', get_lang('AddUsers')).'</a>';
    return $result;
}

/**
 * Adds a user to the Chamilo database or updates its data
 * @param    string    username (and uid inside LDAP)
 * @author    Mustapha Alouani
 */
function ldap_add_user($login) {
    if ($ldap_user = extldap_authenticate($login, 'nopass', true)) {
        return extldap_add_user_by_array($ldap_user);
    }
}

function ldap_add_user_by_array($data, $update_if_exists = true) {

    $lastname = api_convert_encoding($data['sn'][0], api_get_system_encoding(), 'UTF-8');
    $firstname = api_convert_encoding($data['cn'][0], api_get_system_encoding(), 'UTF-8');
    $email = $data['mail'][0];
    // Get uid from dn
    $dn_array=ldap_explode_dn($data['dn'],1);
    $username = $dn_array[0]; // uid is first key
    $outab[] = $data['edupersonprimaryaffiliation'][0]; // Here, "student"
    //$val = ldap_get_values_len($ds, $entry, "userPassword");
    //$val = ldap_get_values_len($ds, $data, "userPassword");
    //$password = $val[0];
    // TODO the password, if encrypted at the source, will be encrypted twice, which makes it useless. Try to fix that.
    $password = $data['userPassword'][0];
    $structure=$data['edupersonprimaryorgunitdn'][0];
    $array_structure=explode(",", $structure);
    $array_val=explode("=", $array_structure[0]);
    $etape=$array_val[1];
    $array_val=explode("=", $array_structure[1]);
    $annee=$array_val[1];
    // To ease management, we add the step-year (etape-annee) code
    $official_code=$etape."-".$annee;
    $auth_source='ldap';
    // No expiration date for students (recover from LDAP's shadow expiry)
    $expiration_date='0000-00-00 00:00:00';
    $active=1;
    if(empty($status)){$status = 5;}
    if(empty($phone)){$phone = '';}
    if(empty($picture_uri)){$picture_uri = '';}
    // Adding user
    $user_id = 0;
    if (UserManager::is_username_available($username)) {
        $user_id = UserManager::create_user(
            $firstname,
            $lastname,
            $status,
            $email,
            $username,
            $password,
            $official_code,
            api_get_setting('language.platform_language'),
            $phone,
            $picture_uri,
            $auth_source,
            $expiration_date,
            $active
        );
    } else {
        if ($update_if_exists) {
            $user = api_get_user_info($username);
            $user_id=$user['user_id'];
            UserManager::update_user($user_id, $firstname, $lastname, $username, null, null, $email, $status, $official_code, $phone, $picture_uri, $expiration_date, $active);
        }
    }
    return $user_id;
}

/**
 * Adds a list of users to one session
 * @param    array    Array of user ids
 * @param    string    Course code
 * @return    void
 */
function ldap_add_user_to_session($UserList, $id_session) {

    // Database Table Definitions
    $tbl_session                        = Database::get_main_table(TABLE_MAIN_SESSION);
    $tbl_session_rel_class                = Database::get_main_table(TABLE_MAIN_SESSION_CLASS);
    $tbl_session_rel_course                = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
    $tbl_session_rel_course_rel_user    = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
    $tbl_course                            = Database::get_main_table(TABLE_MAIN_COURSE);
    $tbl_user                            = Database::get_main_table(TABLE_MAIN_USER);
    $tbl_session_rel_user                = Database::get_main_table(TABLE_MAIN_SESSION_USER);
    $tbl_class                            = Database::get_main_table(TABLE_MAIN_CLASS);
    $tbl_class_user                        = Database::get_main_table(TABLE_MAIN_CLASS_USER);

    $id_session = (int) $id_session;
    // Once users are imported in the users base, we can assign them to the session
    $result=Database::query("SELECT c_id FROM $tbl_session_rel_course WHERE session_id ='$id_session'");
    $CourseList=array();
    while ($row=Database::fetch_array($result)) {
        $CourseList[]=$row['c_id'];
    }
    foreach ($CourseList as $enreg_course) {
        foreach ($UserList as $enreg_user) {
            $enreg_user = (int) $enreg_user;
            Database::query("INSERT IGNORE ".
              " INTO $tbl_session_rel_course_rel_user ".
              "(session_id,c_id,user_id) VALUES ".
              "('$id_session','$enreg_course','$enreg_user')");
        }
        $sql = "SELECT COUNT(user_id) as nbUsers ".
               " FROM $tbl_session_rel_course_rel_user " .
               " WHERE session_id='$id_session' ".
               " AND c_id='$enreg_course'";
        $rs = Database::query($sql);
        list($nbr_users) = Database::fetch_array($rs);
        Database::query("UPDATE $tbl_session_rel_course  ".
               " SET nbr_users=$nbr_users " .
               " WHERE session_id='$id_session' ".
               " AND c_id='$enreg_course'");
    }
    foreach ($UserList as $enreg_user) {
        $enreg_user = (int) $enreg_user;
        Database::query("INSERT IGNORE INTO $tbl_session_rel_user ".
               " (session_id, user_id, registered_at) " .
               " VALUES('$id_session','$enreg_user', '" . api_get_utc_datetime() . "')");
    }
    // We update the number of users in the session
    $sql = "SELECT COUNT(user_id) as nbUsers FROM $tbl_session_rel_user ".
           " WHERE session_id='$id_session' ".
           " AND relation_type<>".SESSION_RELATION_TYPE_RRHH." ";
    $rs = Database::query($sql);
    list($nbr_users) = Database::fetch_array($rs);
    Database::query("UPDATE $tbl_session SET nbr_users=$nbr_users ".
           " WHERE id='$id_session'");
}

function syncro_users() {
    global $ldap_basedn, $ldap_host, $ldap_port, $ldap_rdn, $ldap_pass, $ldap_search_dn;
    echo "Connecting ...";
    $ldap_connect = ldap_connect( $ldap_host, $ldap_port);
    ldap_set_version($ldap_connect);
    if ($ldap_connect) {
        //echo " Connect to LDAP server successful ";
        //echo "Binding ...";
        $ldap_bind = false;
        $ldap_bind_res = ldap_handle_bind($ldap_connect,$ldap_bind);
        if ($ldap_bind_res) {
            //echo " LDAP bind successful... ";
            //echo " Searching for uid... ";
            // Search surname entry
            //OLD: $sr=ldap_search($ldapconnect,"dc=rug, dc=ac, dc=be", "uid=$login");
            //echo "<p> ldapDc = '$LDAPbasedn' </p>";
            $all_user_query = "uid=*";
            if(!empty($ldap_search_dn)) {
                $sr = ldap_search($ldap_connect, $ldap_search_dn, $all_user_query);
            } else {
                $sr = ldap_search($ldap_connect, $ldap_basedn, $all_user_query);
            }
            //echo " Number of entries returned is ".ldap_count_entries($ldapconnect,$sr);
            //echo " Getting entries ...";
            $info = ldap_get_entries($ldap_connect, $sr);
            for ($key = 0; $key < $info['count']; $key ++) {
                $user_id = ldap_add_user_by_array($info[$key], false);
                if ($user_id) {
                    echo "User #$user_id created ";
                } else {
                    echo "User was not created ";
                }
            }
            //echo "Data for ".$info["count"]." items returned:<p>";
        } else {
            //echo "LDAP bind failed...";
        }
        //echo "Closing LDAP connection<hr>";
        ldap_close($ldap_connect);
    } else {
        //echo "<h3>Unable to connect to LDAP server</h3>";
    }
}