<?php
/*
$realm = 'Restricted area';

//user => password
$users = array('mcell' => 'blank', 'guest' => 'guest');
if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
    header('HTTP/1.1 401 Unauthorized');
    header('WWW-Authenticate: Digest realm="'.$realm.'",qop="auth",nonce="'.uniqid("mcell").'",opaque="'.md5($realm).'"');

    die('Sorry ! you must authenticate with correct credentials');
}


// analyze the PHP_AUTH_DIGEST variable
if (!($data = http_digest_parse($_SERVER['PHP_AUTH_DIGEST'])) || !isset($users[$data['username']]))
    die('Wrong Credentials!');


// generate the valid response
$A1 = md5($data['username'] . ':' . $realm . ':' . $users[$data['username']]);
$A2 = md5($_SERVER['REQUEST_METHOD'].':'.$data['uri']);
$valid_response = md5($A1.':'.$data['nonce'].':'.$data['nc'].':'.$data['cnonce'].':'.$data['qop'].':'.$A2);

if ($data['response'] != $valid_response)
    die('Wrong Credentials!');

// ok, valid username & password
echo 'Your are logged in as: ' . $data['username'];


// function to parse the http auth header
function http_digest_parse($txt)
{
    // protect against missing data
    $needed_parts = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1, 'uri'=>1, 'response'=>1);
    $data = array();

    preg_match_all('@(\w+)=(?:([\'"])([^\2]+)\2|([^\s,]+))@', $txt, $matches, PREG_SET_ORDER);

    foreach ($matches as $m) {
        $data[$m[1]] = $m[3] ? $m[3] : $m[4];
        unset($needed_parts[$m[1]]);
    }

    return $needed_parts ? false : $data;
}
*/
if (!isset($_SERVER['PHP_AUTH_USER'])) {
    header('WWW-Authenticate: Basic realm="My Realm"');
    header('HTTP/1.0 401 Unauthorized');
    echo 'Sorry! you must authenticate yourself';
    exit;
} else {
    //echo "<p>Hello {$_SERVER['PHP_AUTH_USER']}.</p>";
    //echo "<p>You entered {$_SERVER['PHP_AUTH_PW']} as your password.</p>";
}

//=========================


session_start();
$_SESSION["s_login_status"] = "";
if ($_SESSION['s_login_status'] == '' && !isset($_SERVER['PHP_AUTH_USER'])) {
  session_unset();
  session_destroy();
  header('WWW-Authenticate: Basic realm="pcStore Ver. 1.0 Admin"');
  //header('WWW-Authenticate: Digest realm="pcStore Ver. 1.0 Admin"');
  header('HTTP/1.0 401 Unauthorized');
  echo 'Thanks, Please do visit again";// Text to send if user hits Cancel button';
  exit;
}else{
  //echo "<p>Hello {$_SERVER['PHP_AUTH_USER']}.</p>";
  //echo "<p>You entered {$_SERVER['PHP_AUTH_PW']} as your password.</p>";
  $loginid = $_SERVER['PHP_AUTH_USER'];
  $loginpw = $_SERVER['PHP_AUTH_PW'];
  $_SESSION["admin"] = "TRUE";

  if ($_SERVER["PHP_AUTH_USER"] == 'mcell' && $_SERVER["PHP_AUTH_PW"] == 'blank'){
    $_SESSION["s_login_status"] = 'online';
    header("location: entry/index.php");
  }else{
    $_SESSION["s_login_status"] = '';
    session_unset();
    session_destroy();
    header("location: index.php");
  }
  exit;
}
?>