index.php

<?php

require_once('recaptchalib.php');

require_once('config.php');

if(!array_key_exists('backend', $config))

	die("Please specify a backend in config.php!");

if($config['debug'])

	include('backend_'.$config['backend'].'.php');

else

	@include('backend_'.$config['backend'].'.php');

if(class_exists("RegistrationBackend"))

{

	$registration_backend = new RegistrationBackend();

}

else

{

	echo('Failed to initialize backend "'.$config['backend'].'": ');

	if(!$config['debug'])

		echo('enable debug in the config for more info.');

	else

		include('backend_'.$config['backend'].'.php');

	die();

}

header( 'Content-type: text/html; charset=utf-8' );

?>

<html>

<head>

	<link rel='stylesheet' href='themes/<?php echo $config['theme']; ?>/style.css' />

</head>

<body>

<?php @include('themes/'.$config['theme'].'/header.php'); ?>

<div id="box">

<?php

if (!$_POST["submit"])

{

?>

<h2>Register a <?php echo ucfirst($config['host']); ?> account</h2>

<p>Use the form below to create an account.</p>

<form method="post">

	<table>

	<tr><td class="label">Username:</td><td><input type="text" class="edit username" name="username" size="10" />@<?php echo $config['host']; ?></td></tr>

	<tr><td class="label">Password:</td><td><input type="password" class="edit" name="password" size="15"/></td></tr>

	<tr><td class="label">Re-type password:</td><td><input type="password" class="edit" name="password2" size="15"/></td></tr>

	<tr><td colspan="2" style="text-align:center; margin-left:auto; margin-right:auto;" align="center">

		<center>

			<div id="captcha">

				<?php echo recaptcha_get_html($config['recaptchaPublicKey'], null, !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off'); ?>

			</div>

		</center>

	</td></tr>

	<tr><td colspan="2" style="text-align:center;">

		<input type="submit" name="submit" value="Register" />

	</td></tr>

</form>

<?php

}

else

{

	// Process submission

	$resp = recaptcha_check_answer ($config['recaptchaPrivateKey'],

                                $_SERVER["REMOTE_ADDR"],

                                $_POST["recaptcha_challenge_field"],

                                $_POST["recaptcha_response_field"]);

	if ($resp->is_valid)

	{

		$registration_backend->init($config);

		$user = $_POST['username'];

		$pass = $_POST['password'];

		$pass2 = $_POST['password2'];

		$ok = true;

		if (!$user)

		{

			echo '<p>Sorry, you didn\'t tell us which username you want! Please <a href="./">go back</a> and try again.</p>';

			$ok = false;

		}

		if($pass !== $pass2)

		{

			echo '<p>The two passwords you typed are not the same, please <a href="./">go back</a> and try more carefully! :-)</p>';

			$ok = false;

		}

		if($ok)

		{

			if(!mb_check_encoding($user, 'UTF-8') || !mb_check_encoding($pass, 'UTF-8'))

			{

				echo '<p>Sorry, your browser sent an invalid form entry. Try removing special characters from your username/password.</p>';

				echo '<p>Alternatively please try a different browser and re-submit <a href="./">the form</a>.</p>';

				$ok = false;

			}

			else

			{

				$user = mb_strtolower($user, 'UTF-8');

			}

		}

		// Check that username is valid for a JID

		if ($ok && strlen($user) > 255)

		{

			echo '<p>Sorry, the username you entered is waaaaay too long. <a href="./">Please try</a> something shorter!</p>';

			$ok = false;

		}

		if ($ok)

		{

			if (strcspn($user, "\"&'/:<>@".chr(127)) !== strlen($user))

			{

				echo '<p>Sorry, that username contains invalid characters (such as &, <, >, / etc.). Please remove them and <a href="./">try again</a>.</p>';

				echo strcspn($user, "\"&'/:<>@".chr(127))." vs ".strlen($user);

				$ok = false;

			}

			else if (strpos($user, chr(255).chr(254)) || strpos($user, chr(255.255)))

			{

				echo '<p>Sorry, that username contains invalid characters. Please remove them and <a href="./">try again</a>.</p>';

				$ok = false;				

			}

			else

			{

				$charfreq = array_keys(count_chars($user, 1));

				if (min($charfreq) <= 32)

				{

					echo '<p>Sorry, that username contains invalid characters. For example you cannot use spaces in a username. Please <a href="./">go back</a>, remove them, and try again.</p>';

					$ok = false;

				}

			}

		}

		if ($ok && (strlen($pass) < 6))

		{

			echo '<p>Your password isn\'t long enough. It needs to be at least 6 characters long, to make sure that it can\'t be easily guessed. <a href="./">Go back</a> and try again.</p>';

			$ok = false;

		}

		if ($ok)

		{

			$backend_message = $registration_backend->validate($user, $pass);

			if($backend_message)

			{

				echo "<p>".htmlentities($backend_message)." Please <a href='./'>go back</a> and try again.</p>";

				$ok = false;

			}

		}

		// Check that username does not already exist

		if ($ok)

		{

			if($registration_backend->exists($user))

			{

				echo '<p>A user with that name already exists, please <a href="./">go back</a> and choose a different username.</p>';

				$ok = false;

			}				

		}

		if ($ok)

		{

			$result = $registration_backend->create($user, $pass);

			if ($result)

			{

				echo '<p>You successfully registered the Jabber ID<br/><b>'.$_POST["username"].'@'.$config['host'].'</b></p>';

				echo "<div style='text-align:left;'>";

				echo "<p>If you haven't already, now is a good time to ";

				echo "<a href='http://www.jabber.org/index.php/download-a-client/'>download a client</a> which you can ";

				echo 'use to log into your new account.</p>';

				echo '<p>Wondering what you can do with your new <a href="'.$config['website'].'">'.$config['host'].'</a> account? ';

				echo 'Here are some services at which you can use your Jabber ID:</p>';

				echo '<ul>';

				echo '<li><a href="http://identi.ca/">identi.ca</a> - Open microblogging service</li>';

				echo '<li><a href="http://speeqe.com/">Speeqe</a> - Web-based Jabber chatrooms</li>';

				echo '</ul>';

				echo '<p><b>Did you know?</b> <a href="http://www.google.com/talk/">Google Talk</a> is one of the many other ';

				echo '<a href="http://xmpp.org/services/">Jabber-compatible services</a>, which ';

				echo 'means you can add your Gmail and Google Apps friends directly to your '.ucfirst($config['host']).' contact list!</p>';

				echo '</div>';

			}

			else

				echo '<p>There was a problem creating your account. If the problem persists, please <a href="http://speeqe.com/room/jabber@conference.jabber.org/">contact us</a>.</p>';

		}

		$registration_backend->close();

	}

	else

	{

		echo '<p>Sorry, the CAPTCHA text you entered was incorrect, please <a href="./">go back</a> and try again.</p>';

		if($config['debug'])

			echo '('.$resp->error.')';

	}                          

}

?>

</div>

<?php @include('themes/'.$config['theme'].'/footer.php'); ?>

</body>

</html>