<?php
include "config.php";
if($_GET['view_source']) view_source();
if($_GET['logout'] == 1){
  $_SESSION['login']="";
  exit("<script>location.href='./';</script>");
}
if($_SESSION['login']){
  echo "hi {$_SESSION['login']}<br>";
  if($_SESSION['login'] == "admin"){
    if(preg_match("/^172\.17\.0\./",$_SERVER['REMOTE_ADDR'])) echo $flag;
    else echo "Only access from virtual IP address";
  }
  else echo "You are not admin";
  echo "<br><a href=./?logout=1>[logout]</a>";
  exit;
}
if(!$_SESSION['login']){
  if(preg_match("/logout=1/",$_SERVER['HTTP_REFERER'])){
    header('WWW-Authenticate: Basic realm="Protected Area"');
    header('HTTP/1.0 401 Unauthorized');
  }
  if($_SERVER['PHP_AUTH_USER']){
    $id = $_SERVER['PHP_AUTH_USER'];
    $pw = $_SERVER['PHP_AUTH_PW'];
    $pw = md5($pw);
    $db = dbconnect();
    $query = "select id from member where id='{$id}' and pw='{$pw}'";
    $result = mysqli_fetch_array(mysqli_query($db,$query));
    if($result['id']){
      $_SESSION['login'] = $result['id'];
      exit("<script>location.href='./';</script>");
    }
  }
  if(!$_SESSION['login']){
    header('WWW-Authenticate: Basic realm="Protected Area"');
    header('HTTP/1.0 401 Unauthorized');
    echo "Login Fail";
  }
}
?><hr><a href=./?view_source=1>view-source</a>