login.php at Fretsweb - Free PHP Code

<?php

/*
Fretsweb - A Frets on Fire chart server
Copyright (C) 2009, Daan Sprenkels

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

require_once "common.php";

include_once "log.php";

if(isset($_GET['need']))
{
	if($_GET['need'] == 'admin')
	{
		$info = 'You need an admin status to do this.';
	}
	elseif ($_GET['need'] == 'moderator')
	{
		$info = 'You need a moderator status to do this.';
	}
}

session_start();

if(isset($_POST['login']))
{
	if($_POST['password'] == $admin_passwd)
	{
		$_SESSION['in'] = 2; // Admin status
		header("location: index.php");
		clog("Admin logged in");
		die();
	}
	if($_POST['password'] == $moderator_passwd)
	{
		$_SESSION['in'] = 1; // Admin status
		header("location: index.php");
		clog("Moderator logged in");
		die();
	}
	else
	{
		$info = '<p class="info">Wrong password!</p>';
		clog("Entered wrong password");
	}
}
else
{
	session_destroy();
}

?>
<html>
 <head>
  <title>Admin Login</title>
  <link href="../css.php" rel="stylesheet" type="text/css" />
  <link href="../images/favicon.png" rel="icon">
 </head>
 <body>
  <center>
    <h2>Admin Password</h2>
    <form action="<? echo $_SERVER['PHP_SELF']; ?>" method="post">
    <?php if(isset($info)) echo '<p class="info" align="center">'.$info.'</p>'; ?>
    <p><input type="password" name="password">
    <input type="submit" name="login" value="Login"></p>
   </form>
   <p><a href="..">Click here to go back to the index.</a></p>
  </center>
 </body>
</html>