Monday, December 13, 2010

Password Protect PHP Script

Set usernames / passwords below between SETTINGS START and SETTINGS END.

Open it in browser with "help" parameter to get the code

to add to all files being protected.

Example: password_protect.php?help

Include protection string which it gave you into every file that needs to be protected



Add following HTML code to your page where you want to have logout link <a href="http://www.example.com/path/to/protected/page.php?logout=1">Logout</a> -------------------------------------------------------------------

SAMPLE if you only want to request login and password on login form.

Each row represents different user.



$LOGIN_INFORMATION = array(

'sharemyphp' => 'root',

'test' => 'testpass',

'admin' => 'passwd'

);



--------------------------------------------------------------------

SAMPLE if you only want to request only password on login form.

Note: only passwords are listed



$LOGIN_INFORMATION = array(

'root',

'testpass',

'passwd'

);



--------------------------------------------------------------------

<?php

   ##################################################################

   #  SETTINGS START

 ##################################################################
// Add login/password pairs below, like described above

   // NOTE: all rows except last must have comma "," at the end of line

   $LOGIN_INFORMATION = array(

   'sharemyphp' => 'root',

   'admin' => 'adminpass'

   );
// request login? true - show login and password boxes, false - password box only

   define('USE_USERNAME', true);
// User will be redirected to this page after logout

   define('LOGOUT_URL', 'http://www.example.com/');
// time out after NN minutes of inactivity. Set to 0 to not timeout

   define('TIMEOUT_MINUTES', 0);
// This parameter is only useful when TIMEOUT_MINUTES is not zero

   // true - timeout time from last activity, false - timeout time from login

   define('TIMEOUT_CHECK_ACTIVITY', true);
##################################################################

   #  SETTINGS END

   ##################################################################

 
///////////////////////////////////////////////////////

   // do not change code below

   ///////////////////////////////////////////////////////
// show usage example

   if(isset($_GET['help'])) {

   die('Include following code into every page you would like to protect, at the very beginning (first line):<br>&lt;?php include("' . str_replace('\\','\\\\',__FILE__) . '"); ?&gt;');

   }
// timeout in seconds

   $timeout = (TIMEOUT_MINUTES == 0 ? 0 : time() + TIMEOUT_MINUTES * 60);
// logout?

   if(isset($_GET['logout'])) {

   setcookie("verify", '', $timeout, '/'); // clear password;

   header('Location: ' . LOGOUT_URL);

   exit();

   }
if(!function_exists('showLoginPasswordProtect')) {
// show login form

   function showLoginPasswordProtect($error_msg) {

   ?>

   <html>

   <head>

  <title>Please enter password to access this page</title>

  <META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">

  <META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">

  </head>

  <body>

  <style>

   input { border: 1px solid black; }

  </style>

  <div style="width:500px; margin-left:auto; margin-right:auto; text-align:center">

  <form method="post">

  <h3>Please enter password to access this page</h3>

  <font color="red"><?php echo $error_msg; ?></font><br />

  <?php if (USE_USERNAME) echo 'Login:<br /><input type="input" name="access_login" /><br />Password:<br />'; ?>

  <input type="password" name="access_password" /><p></p><input type="submit" name="Submit" value="Submit" />

  </form>

  <br />

  <a style="font-size:9px; color: #B0B0B0; font-family: Verdana, Arial;" href="http://www.sharemyphp.com/"  >Powered by Sharemyphp</a>

  </div>

  </body>

  </html>
<?php

   // stop at this point

   die();

   }

   }
// user provided password

   if (isset($_POST['access_password'])) {
$login = isset($_POST['access_login']) ? $_POST['access_login'] : '';

   $pass = $_POST['access_password'];

   if (!USE_USERNAME && !in_array($pass, $LOGIN_INFORMATION)

   || (USE_USERNAME && ( !array_key_exists($login, $LOGIN_INFORMATION) || $LOGIN_INFORMATION[$login] != $pass ) ) 

   ) {

   showLoginPasswordProtect("Incorrect password.");

   }

   else {

   // set cookie if password was validated

   setcookie("verify", md5($login.'%'.$pass), $timeout, '/');

  

   // Some programs (like Form1 Bilder) check $_POST array to see if parameters passed

   // So need to clear password protector variables

   unset($_POST['access_login']);

   unset($_POST['access_password']);

   unset($_POST['Submit']);

   }
}
else {
// check if password cookie is set

   if (!isset($_COOKIE['verify'])) {

   showLoginPasswordProtect("");

   }
// check if cookie is good

   $found = false;

   foreach($LOGIN_INFORMATION as $key=>$val) {

   $lp = (USE_USERNAME ? $key : '') .'%'.$val;

   if ($_COOKIE['verify'] == md5($lp)) {

   $found = true;

   // prolong timeout

   if (TIMEOUT_CHECK_ACTIVITY) {

   setcookie("verify", md5($lp), $timeout, '/');

   }

   break;

   }

   }

   if (!$found) {

   showLoginPasswordProtect("");

   }
}
?>

 

By PHP with No comments

0 comments:

Post a Comment

    • Popular
    • Categories
    • Archives