<?php

/***********************************************************************

  Copyright (C) 2002-2008  PunBB.org

  This file is part of PunBB.

  PunBB 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 2 of the License,

  or (at your option) any later version.

  PunBB 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, write to the Free Software

  Foundation, Inc., 59 Temple Place, Suite 330, Boston,

  MA  02111-1307  USA

************************************************************************/

if (isset($_GET['action']))

	define('PUN_QUIET_VISIT', 1);

// if (!defined('PUN_ROOT'))

// 	define('PUN_ROOT', './');

// require PUN_ROOT.'include/common.php';

// import globals (I really hope this isn't dangerous)

foreach ( $GLOBALS as $key => $_ )

{

  $$key =& $GLOBALS[$key];

}

($hook = get_hook('li_start')) ? eval($hook) : null;

// Load the login.php language file

require PUN_ROOT.'lang/'.$pun_user['language'].'/login.php';

$action = isset($_GET['action']) ? $_GET['action'] : null;

// Login

if (isset($_POST['form_sent']) && $action == 'in')

{

	$form_username = trim($_POST['req_username']);

	$form_password = trim($_POST['req_password']);

	($hook = get_hook('li_login_form_submitted')) ? eval($hook) : null;

	// Get user info matching login attempt

	$query = array(

		'SELECT'	=> 'u.id, u.group_id, u.password, u.save_pass, u.salt',

		'FROM'		=> 'users AS u'

	);

	if ($db_type == 'mysql' || $db_type == 'mysqli')

		$query['WHERE'] = 'username=\''.$pun_db->escape($form_username).'\'';

	else

		$query['WHERE'] = 'LOWER(username)=LOWER(\''.$pun_db->escape($form_username).'\')';

	($hook = get_hook('li_qr_get_login_data')) ? eval($hook) : null;

	$result = $pun_db->query_build($query) or error(__FILE__, __LINE__);

	list($user_id, $group_id, $db_password_hash, $save_pass, $salt) = $pun_db->fetch_row($result);

	$authorized = false;

	if (!empty($db_password_hash))

	{

		$sha1_in_db = (strlen($db_password_hash) == 40) ? true : false;

		$form_password_hash = sha1($salt.sha1($form_password));

		if ($sha1_in_db && $db_password_hash == $form_password_hash)

			$authorized = true;

		else if ((!$sha1_in_db && $db_password_hash == md5($form_password)) || ($sha1_in_db && $db_password_hash == sha1($form_password)))

		{

			$authorized = true;

			$salt = random_key(12);

			$form_password_hash = sha1($salt.sha1($form_password));

			// There's an old MD5 hash or an unsalted SHA1 hash in the database, so we replace it

			// with a randomly generated salt and a new, salted SHA1 hash

			$query = array(

				'UPDATE'	=> 'users',

				'SET'		=> 'password=\''.$form_password_hash.'\', salt=\''.$pun_db->escape($salt).'\'',

				'WHERE'		=> 'id='.$user_id

			);

			($hook = get_hook('li_qr_update_user_hash')) ? eval($hook) : null;

			$pun_db->query_build($query) or error(__FILE__, __LINE__);

		}

	}

	($hook = get_hook('li_login_pre_auth_message')) ? eval($hook) : null;

	if (!$authorized)

		message($lang_login['Wrong user/pass'], sprintf($lang_login['Forgotten password'], '<a href="'.pun_link($pun_url['request_password']).'">'.$lang_login['Request pass'].'</a>'));

	// Update the status if this is the first time the user logged in

	if ($group_id == PUN_UNVERIFIED)

	{

		$query = array(

			'UPDATE'	=> 'users',

			'SET'		=> 'group_id='.$pun_config['o_default_user_group'],

			'WHERE'		=> 'id='.$user_id

		);

		($hook = get_hook('li_qr_update_user_group')) ? eval($hook) : null;

		$pun_db->query_build($query) or error(__FILE__, __LINE__);

	}

	// Remove this user's guest entry from the online list

	$query = array(

		'DELETE'	=> 'online',

		'WHERE'		=> 'ident=\''.$pun_db->escape(get_remote_address()).'\''

	);

	($hook = get_hook('li_qr_delete_online_user')) ? eval($hook) : null;

	$pun_db->query_build($query) or error(__FILE__, __LINE__);

	$expire = ($save_pass == '1') ? time() + 31536000 : 0;

	pun_setcookie($cookie_name, base64_encode($user_id.'|'.$form_password_hash), $expire);

	pun_redirect(htmlspecialchars($_POST['redirect_url']).((substr_count($_POST['redirect_url'], '?') == 1) ? '&' : '?').'login=1', $lang_login['Login redirect']);

}

// Logout

else if ($action == 'out')

{

	if ($pun_user['is_guest'] || !isset($_GET['id']) || $_GET['id'] != $pun_user['id'])

	{

		header('Location: '.pun_link($pun_url['index']));

		exit;

	}

	// We validate the CSRF token. If it's set in POST and we're at this point, the token is valid.

	// If it's in GET, we need to make sure it's valid.

	if (!isset($_POST['csrf_token']) && (!isset($_GET['csrf_token']) || $_GET['csrf_token'] !== generate_form_token('logout'.$pun_user['id'])))

		csrf_confirm_form();

	($hook = get_hook('li_logout_selected')) ? eval($hook) : null;

	// Remove user from "users online" list.

	$query = array(

		'DELETE'	=> 'online',

		'WHERE'		=> 'user_id='.$pun_user['id']

	);

	($hook = get_hook('li_qr_delete_online_user2')) ? eval($hook) : null;

	$pun_db->query_build($query) or error(__FILE__, __LINE__);

	// Update last_visit (make sure there's something to update it with)

	if (isset($pun_user['logged']))

	{

		$query = array(

			'UPDATE'	=> 'users',

			'SET'		=> 'last_visit='.$pun_user['logged'],

			'WHERE'		=> 'id='.$pun_user['id']

		);

		($hook = get_hook('li_qr_update_last_visit')) ? eval($hook) : null;

		$pun_db->query_build($query) or error(__FILE__, __LINE__);

	}

	pun_setcookie($cookie_name, base64_encode('1|'.random_key(8, true)), time() + 31536000);

	// Reset tracked topics

	set_tracked_topics(null);

	($hook = get_hook('li_logout_pre_redirect')) ? eval($hook) : null;

	pun_redirect(pun_link($pun_url['index']), $lang_login['Logout redirect']);

}

// New password

else if ($action == 'forget' || $action == 'forget_2')

{

	if (!$pun_user['is_guest'])

		header('Location: '.pun_link($pun_url['index']));

	($hook = get_hook('li_forgot_pass_selected')) ? eval($hook) : null;

	if (isset($_POST['form_sent']))

	{

		require PUN_ROOT.'include/email.php';

		// Validate the email-address

		$email = strtolower(trim($_POST['req_email']));

		if (!is_valid_email($email))

			message($lang_common['Invalid e-mail']);

		// Fetch user matching $email

		$query = array(

			'SELECT'	=> 'u.id, u.username, u.salt',

			'FROM'		=> 'users AS u',

			'WHERE'		=> 'u.email=\''.$pun_db->escape($email).'\''

		);

		($hook = get_hook('li_qr_get_user_data')) ? eval($hook) : null;

		$result = $pun_db->query_build($query) or error(__FILE__, __LINE__);

		if ($pun_db->num_rows($result))

		{

			($hook = get_hook('li_forgot_pass_pre_email')) ? eval($hook) : null;

			// Load the "activate password" template

			$mail_tpl = trim(file_get_contents(PUN_ROOT.'lang/'.$pun_user['language'].'/mail_templates/activate_password.tpl'));

			// The first row contains the subject

			$first_crlf = strpos($mail_tpl, "\n");

			$mail_subject = trim(substr($mail_tpl, 8, $first_crlf-8));

			$mail_message = trim(substr($mail_tpl, $first_crlf));

			// Do the generic replacements first (they apply to all e-mails sent out here)

			$mail_message = str_replace('<base_url>', $base_url.'/', $mail_message);

			$mail_message = str_replace('<board_mailer>', sprintf($lang_common['Forum mailer'], $pun_config['o_board_title']), $mail_message);

			// Loop through users we found

			while ($cur_hit = $pun_db->fetch_assoc($result))

			{

				// Generate a new password activation key

				$new_password_key = random_key(8, true);

				$query = array(

					'UPDATE'	=> 'users',

					'SET'		=> 'activate_key=\''.$new_password_key.'\'',

					'WHERE'		=> 'id='.$cur_hit['id']

				);

				($hook = get_hook('li_qr_set_activate_key')) ? eval($hook) : null;

				$pun_db->query_build($query) or error(__FILE__, __LINE__);

				// Do the user specific replacements to the template

				$cur_mail_message = str_replace('<username>', $cur_hit['username'], $mail_message);

				$cur_mail_message = str_replace('<activation_url>', str_replace('&amp;', '&', pun_link($pun_url['change_password_key'], array($cur_hit['id'], $new_password_key))), $cur_mail_message);

				pun_mail($email, $mail_subject, $cur_mail_message);

			}

			message(sprintf($lang_login['Forget mail'], '<a href="mailto:'.$pun_config['o_admin_email'].'">'.$pun_config['o_admin_email'].'</a>'));

		}

		else

			message(sprintf($lang_login['No e-mail match'], htmlspecialchars($email)));

	}

	// Setup form

	$pun_page['set_count'] = $pun_page['fld_count'] = 0;

	$pun_page['form_action'] = $base_url.'/login.php?action=forget_2';

	// Setup breadcrumbs

	$pun_page['crumbs'] = array(

		array($pun_config['o_board_title'], pun_link($pun_url['index'])),

		$lang_login['New password request']

	);

	($hook = get_hook('li_forgot_pass_pre_header_load')) ? eval($hook) : null;

	define ('PUN_PAGE', 'dialogue');

	require PUN_ROOT.'header.php';

?>

<div id="pun-main" class="main">

	<h1><span><?php echo end($pun_page['crumbs']) ?></span></h1>

	<div class="main-head">

		<h2><span><?php echo $lang_login['New password head'] ?></span></h2>

	</div>

	<div class="main-content frm">

		<div class="frm-info">

			<p class="important"><?php echo $lang_login['New password info'] ?></p>

		</div>

		<div id="req-msg" class="frm-warn">

			<p class="important"><?php printf($lang_common['Required warn'], '<em class="req-text">'.$lang_common['Required'].'</em>') ?></p>

		</div>

		<form id="afocus" class="frm-form" method="post" accept-charset="utf-8" action="<?php echo $pun_page['form_action'] ?>">

			<div class="hidden">

				<input type="hidden" name="form_sent" value="1" />

			</div>

<?php ($hook = get_hook('li_forgot_pass_pre_fieldset')) ? eval($hook) : null; ?>

			<fieldset class="frm-set set<?php echo ++$pun_page['set_count'] ?>">

				<legend class="frm-legend"><strong><?php echo $lang_common['Required information'] ?></strong></legend>

				<div class="frm-fld text required">

					<label for="fld<?php echo ++$pun_page['fld_count'] ?>">

						<span class="fld-label"><?php echo $lang_login['E-mail address'] ?></span><br />

						<span class="fld-input"><input id="fld<?php echo $pun_page['fld_count'] ?>" type="text" name="req_email" size="35" maxlength="80" /></span><br />

						<em class="req-text"><?php echo $lang_common['Required'] ?></em>

						<span class="fld-help"><?php echo $lang_login['E-mail address help'] ?></span>

					</label>

				</div>

			</fieldset>

<?php ($hook = get_hook('li_forgot_pass_post_fieldset')) ? eval($hook) : null; ?>

			<div class="frm-buttons">

				<span class="submit"><input type="submit" name="request_pass" value="<?php echo $lang_common['Submit'] ?>" /></span>

				<span class="cancel"><input type="submit" name="cancel" value="<?php echo $lang_common['Cancel'] ?>" /></span>

			</div>

		</form>

	</div>

</div>

<?php

	require PUN_ROOT.'footer.php';

}

if (!$pun_user['is_guest'])

	header('Location: '.pun_link($pun_url['index']));

// Setup form

$pun_page['set_count'] = $pun_page['fld_count'] = 0;

$pun_page['form_action'] = $base_url.'/login.php?action=in';

$pun_page['hidden_fields'] = array(

	'<input type="hidden" name="form_sent" value="1" />',

	'<input type="hidden" name="redirect_url" value="'.htmlspecialchars($pun_user['prev_url']).'" />'

);

// Setup form information

$pun_page['frm_info'] = array(

	'<li><span>'.sprintf($lang_login['Must be registered'], '<a href="'.pun_link($pun_url['register']).'">'.$lang_login['Register now'].'</a>').'</span></li>',

	'<li><span>'.sprintf($lang_login['Forgotten password'], '<a href="'.pun_link($pun_url['request_password']).'">'.$lang_login['Request pass'].'</a>').'</span></li>'

);

// Setup breadcrumbs

$pun_page['crumbs'] = array(

	array($pun_config['o_board_title'], pun_link($pun_url['index'])),

	$lang_common['Login']

);

($hook = get_hook('li_login_pre_header_load')) ? eval($hook) : null;

define('PUN_PAGE', 'login');

require PUN_ROOT.'header.php';

?>

<div id="pun-main" class="main">

	<h1><span><?php echo end($pun_page['crumbs']) ?></span></h1>

	<div class="main-head">

		<h2><span><?php printf($lang_login['Login info'], htmlspecialchars($pun_config['o_board_title'])) ?></span></h2>

	</div>

	<div class="main-content frm">

		<div class="frm-info">

			<ul>

				<?php echo implode("\n\t\t\t\t\t", $pun_page['frm_info'])."\n" ?>

			</ul>

		</div>

		<div id="req-msg" class="frm-warn">

			<p class="important"><?php printf($lang_common['Required warn'], '<em class="req-text">'.$lang_common['Required'].'</em>') ?></p>

		</div>

		<form id="afocus" class="frm-form" method="post" accept-charset="utf-8" action="<?php echo $pun_page['form_action'] ?>">

			<div class="hidden">

				<?php echo implode("\n\t\t\t\t", $pun_page['hidden_fields'])."\n" ?>

			</div>

<?php ($hook = get_hook('li_login_pre_fieldset')) ? eval($hook) : null; ?>

			<fieldset class="frm-set set<?php echo ++$pun_page['set_count'] ?>">

				<legend class="frm-legend"><strong><?php echo $lang_login['Login information'] ?></strong></legend>

				<div class="frm-fld text required">

					<label for="fld<?php echo ++$pun_page['fld_count'] ?>">

						<span class="fld-label"><?php echo $lang_login['Username'] ?></span><br />

						<span class="fld-input"><input type="text" id="fld<?php echo $pun_page['fld_count'] ?>" name="req_username" size="30" maxlength="25" /></span><br />

						<em class="req-text"><?php echo $lang_common['Required'] ?></em>

					</label>

				</div>

				<div class="frm-fld text required">

					<label for="fld<?php echo ++$pun_page['fld_count'] ?>">

						<span class="fld-label"><?php echo $lang_login['Password'] ?></span><br />

						<span class="fld-input"><input type="password" id="fld<?php echo $pun_page['fld_count'] ?>" name="req_password" size="30" /></span><br />

						<em class="req-text"><?php echo $lang_common['Required'] ?></em>

					</label>

				</div>

			</fieldset>

<?php ($hook = get_hook('li_login_post_fieldset')) ? eval($hook) : null; ?>

			<div class="frm-buttons">

				<span class="submit"><input type="submit" name="login" value="<?php echo $lang_common['Login'] ?>" /></span>

			</div>

		</form>

	</div>

</div>

<?php

($hook = get_hook('li_end')) ? eval($hook) : null;

require PUN_ROOT.'footer.php';