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Sessions and LDAP

I have a webpage. The authentication on the web page is done using the ldap server that I configured. Now I won’t perform any sessions, so when the user is inactive for a certain period of time (in the case below 10 seconds), the session ends and the user disconnects from the ldap server. I found this code excerpt:

<?php
    session_cache_expire(20);

    session_start(); 
    $inactive = 10;
    if(isset($_SESSION['start'])) {
        $session_life = time() - $_SESSION['start'];
        if($session_life > $inactive){
            header("Location: endSession.php"); 

        }
    }
    $_SESSION['start'] = time();
?>

He does not work. If I refresh the page, it redirects me to my page "endSession.php", even if I am active.

+3
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3 answers
function check_auth_ldap () {

  $sessionTimeoutSecs = 10;
  $ldapServer = '11.22.33.44';
  $ldapPort = 389;

  if (!isset($_SESSION)) session_start();

  if (!empty($_SESSION['lastactivity']) && $_SESSION['lastactivity'] > time() - $sessionTimeoutSecs && !isset($_GET['logout'])) {

    // Session is already authenticated
    $ds = ldap_connect($ldapServer, $ldapPort);
    if (ldap_bind($ds, $_SESSION['username'], $_SESSION['password'])) {
      $_SESSION['lastactivity'] = time();
      return $ds;
    } else {
      unset($_SESSION['lastactivity'], $_SESSION['username'], $_SESSION['password']);
      header("Location: endSession.php");
      exit;
    }

  } else if (isset($_POST['username'], $_POST['password'])) {

    // Handle login requests
    $ds = ldap_connect($ldapServer, $ldapPort);
    if (ldap_bind($ds, $_POST['username'], $_POST['password'])) {
      // Successful auth
      $_SESSION['lastactivity'] = time();
      $_SESSION['username'] = $_POST['username'];
      $_SESSION['password'] = $_POST['password'];
      return $ds;
    } else {
      // Auth failed
      header("Location: endSession.php");
      exit;
    }

  } else {

    // Session has expired or a logout was requested
    unset($_SESSION['lastactivity'], $_SESSION['username'], $_SESSION['password']);
    header("Location: endSession.php");
    exit;

  }

}

. . LDAP, , endSession.php, .

:

$ds = check_auth_ldap();

... .

+7

uid. , . cn bind , uid . , -.

function check_auth_ldap () {

  if (!($_POST['username'] && $_POST['password'])) {

    header("Location: login.php?failure=6");

  }

  $sessionTimeoutSecs = 10;
  $ldapServer = localhost;
  $ldapBaseDN = ou=users,ou=subtree,dc=domain,dc=tld;
  $ldapPort = 389;
  $ldapFilter = "(&(objectClass=*)(uid=".$_POST['username']."))";
  $ldapAttributes = array("cn");

  if (!isset($_SESSION)) session_start();

  if (!empty($_SESSION['lastactivity']) && $_SESSION['lastactivity'] > time() - $sessionTimeoutSecs && !isset($_GET['logout'])) {

    // Session is already authenticated
    $ds = ldap_connect($ldapServer, $ldapPort);
    $sr = ldap_search($ds,$ldapBaseDN,$ldapFilter,$ldapAttributes);
    $result = ldap_get_entries($ds, $sr);

    if ($result) {
        $binddn = $result[0]['dn'];
    } else {
        header("Location: login.php?failure=1");
    }

    ldap_close ($ds);

    $ds = ldap_connect($ldapServer, $ldapPort);
    ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);

    if (ldap_bind($ds, $binddn, $_SESSION['password'])) {
      $_SESSION['lastactivity'] = time();
      return $ds;
    } else {
      unset($_SESSION['lastactivity'], $_SESSION['username'], $_SESSION['password']);
      header("Location: login.php?failure=2");
      exit;
    }

  } else if (isset($_POST['username'], $_POST['password'])) {

    // Handle login requests
    $ds = ldap_connect($ldapServer, $ldapPort);
    $sr = ldap_search($ds,$ldapBaseDN,$ldapFilter,$ldapAttributes);
    $result = ldap_get_entries($ds, $sr);

    if ($result) {
        $binddn = $result[0]['dn'];
    } else {
        header("Location: login.php?failure=3");
    }
    ldap_close ($ds);

    $ds = ldap_connect($ldapServer, $ldapPort);
    ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);

    if (ldap_bind($ds, $binddn, $_POST['password'])) {
      // Successful auth
      $_SESSION['lastactivity'] = time();
      $_SESSION['username'] = $_POST['username'];
      $_SESSION['password'] = $_POST['password'];
      return $ds;
    } else {
      // Auth failed
      header("Location: login.php?failure=4");
      exit;
    }

  } else {

    // Session has expired or a logout was requested
    unset($_SESSION['lastactivity'], $_SESSION['username'], $_SESSION['password']);
    header("Location: login.php?failure=5");
    exit;

  }

}
+2

( ) :

test.php

<?php
session_start();

if(isset($_GET['start']))
    $_SESSION['start'] = time();

if(time() - $_SESSION['start'] > 10)
    echo 'Logged out';
else 
    echo 'Logged in';

?>

test.php?start , : "" , test.php 10 "" , 10 ""

+1

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