<?php 



function auth_ok(){

  return isset($_SESSION["authenticated"]) && $_SESSION["authenticated"] === true;

}



function auth_get_link(){

  return '<a href="'.get_php_self().'?login=1">Authenticate to access this section</a>';

}



function get_php_self(){

  return isset($_SERVER['PHP_SELF']) ? htmlentities(strip_tags($_SERVER['PHP_SELF'],''), ENT_QUOTES, 'UTF-8') : '';

}



// From apc.php

function auth_check() {

  if ( isset($_GET["login"]) && DOMPDF_ADMIN_PASSWORD == "password" ) {

    $_SESSION["auth_message"] = "The password must be changed in 'dompdf_config.custom.inc.php'";

    return false;

  }

  else {

    $_SESSION["auth_message"] = null;

  }

  

  if ( isset($_GET["login"]) || isset($_SERVER["PHP_AUTH_USER"]) ) {



    if (!isset($_SERVER["PHP_AUTH_USER"]) ||

        !isset($_SERVER["PHP_AUTH_PW"]) ||

        $_SERVER["PHP_AUTH_USER"] != DOMPDF_ADMIN_USERNAME ||

        $_SERVER["PHP_AUTH_PW"]   != DOMPDF_ADMIN_PASSWORD) {

  

      $PHP_SELF = get_php_self();

  

      header('WWW-Authenticate: Basic realm="DOMPDF Login"');

      header('HTTP/1.0 401 Unauthorized');

      

      echo <<<EOB

        <html><body>

        <h1>Rejected!</h1>

        <big>Wrong Username or Password!</big><br/>&nbsp;<br/>&nbsp;

        <big><a href='$PHP_SELF'>Continue...</a></big>

        </body></html>

EOB;

      exit;

    }

    

    else {

      $_SESSION["auth_message"] = null;

      $_SESSION["authenticated"] = true;

      return true;

    }

  }

}