<?php
/*
	vpn_ipsec_keys_edit.php
*/
/* ====================================================================
 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.
 *
 *  Some or all of this file is based on the m0n0wall project which is
 *  Copyright (c)  2004 Manuel Kasper (BSD 2 clause)
 *
 *	Redistribution and use in source and binary forms, with or without modification,
 *	are permitted provided that the following conditions are met:
 *
 *	1. Redistributions of source code must retain the above copyright notice,
 *		this list of conditions and the following disclaimer.
 *
 *	2. Redistributions in binary form must reproduce the above copyright
 *		notice, this list of conditions and the following disclaimer in
 *		the documentation and/or other materials provided with the
 *		distribution.
 *
 *	3. All advertising materials mentioning features or use of this software
 *		must display the following acknowledgment:
 *		"This product includes software developed by the pfSense Project
 *		 for use in the pfSense software distribution. (http://www.pfsense.org/).
 *
 *	4. The names "pfSense" and "pfSense Project" must not be used to
 *		 endorse or promote products derived from this software without
 *		 prior written permission. For written permission, please contact
 *		 coreteam@pfsense.org.
 *
 *	5. Products derived from this software may not be called "pfSense"
 *		nor may "pfSense" appear in their names without prior written
 *		permission of the Electric Sheep Fencing, LLC.
 *
 *	6. Redistributions of any form whatsoever must retain the following
 *		acknowledgment:
 *
 *	"This product includes software developed by the pfSense Project
 *	for use in the pfSense software distribution (http://www.pfsense.org/).
 *
 *	THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
 *	EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *	PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
 *	ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 *	OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *	====================================================================
 *
 */

##|+PRIV
##|*IDENT=page-vpn-ipsec-editkeys
##|*NAME=VPN: IPsec: Edit Pre-Shared Keys
##|*DESCR=Allow access to the 'VPN: IPsec: Edit Pre-Shared Keys' page.
##|*MATCH=vpn_ipsec_keys_edit.php*
##|-PRIV

require("functions.inc");
require("guiconfig.inc");
require_once("ipsec.inc");
require_once("vpn.inc");

if (!is_array($config['ipsec']['mobilekey'])) {
	$config['ipsec']['mobilekey'] = array();
}
ipsec_mobilekey_sort();
$a_secret = &$config['ipsec']['mobilekey'];

if (is_numericint($_GET['id'])) {
	$id = $_GET['id'];
}
if (isset($_POST['id']) && is_numericint($_POST['id'])) {
	$id = $_POST['id'];
}

if (isset($id) && $a_secret[$id]) {
	$pconfig['ident'] = $a_secret[$id]['ident'];
	$pconfig['type'] = $a_secret[$id]['type'];
	$pconfig['psk'] = $a_secret[$id]['pre-shared-key'];
}

if ($_POST) {
	$userids = array();
	foreach ($config['system']['user'] as $uid => $user) {
		$userids[$user['name']] = $uid;
	}

	unset($input_errors);
	$pconfig = $_POST;

	/* input validation */
	$reqdfields = explode(" ", "ident psk");
	$reqdfieldsn = array(gettext("Identifier"), gettext("Pre-Shared Key"));

	do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);

	if (preg_match("/[^a-zA-Z0-9@\.\-]/", $_POST['ident'])) {
		$input_errors[] = gettext("The identifier contains invalid characters.");
	}

	if (array_key_exists($_POST['ident'], $userids)) {
		$input_errors[] = gettext("A user with this name already exists. Add the key to the user instead.");
	}
	unset($userids);

	if (isset($_POST['psk']) && !preg_match('/^[[:ascii:]]*$/', $_POST['psk'])) {
		$input_errors[] = gettext("Pre-Shared Key contains invalid characters.");
	}

	if (!$input_errors && !(isset($id) && $a_secret[$id])) {
		/* make sure there are no dupes */
		foreach ($a_secret as $secretent) {
			if ($secretent['ident'] == $_POST['ident']) {
				$input_errors[] = gettext("Another entry with the same identifier already exists.");
				break;
			}
		}
	}

	if (!$input_errors) {

		if (isset($id) && $a_secret[$id]) {
			$secretent = $a_secret[$id];
		}

		$secretent['ident'] = $_POST['ident'];
		$secretent['type'] = $_POST['type'];
		$secretent['pre-shared-key'] = $_POST['psk'];
		$text = "";

		if (isset($id) && $a_secret[$id]) {
			$a_secret[$id] = $secretent;
			$text = gettext("Edited IPsec Pre-Shared Keys");
		} else {
			$a_secret[] = $secretent;
			$text = gettext("Added IPsec Pre-Shared Keys");
		}

		write_config($text);
		mark_subsystem_dirty('ipsec');

		header("Location: vpn_ipsec_keys.php");
		exit;
	}
}

$pgtitle = array(gettext("VPN"), gettext("IPsec"), gettext("Pre-Shared Keys"), gettext("Edit"));
$shortcut_section = "ipsec";

include("head.inc");

if ($input_errors)
	print_input_errors($input_errors);

$form = new Form;

$section = new Form_Section('Edit Pre-Shared-Secret');

$section->addInput(new Form_Input(
	'ident',
	'Identifier',
	'text',
	$pconfig['ident']
))->setHelp('This can be either an IP address, fully qualified domain name or an e-mail address');

$section->addInput(new Form_Select(
	'type',
	'Secret type',
	$pconfig['type'],
	$ipsec_preshared_key_type
))->setWidth(2);

$section->addInput(new Form_Input(
	'psk',
	'Pre-Shared Key',
	'text',
	$pconfig['psk']
));

if (isset($id) && $a_secret[$id]) {
	$form->addGlobal(new Form_Input(
		'id',
		false,
		'hidden',
		$id
	));
}

$form->add($section);

print $form;

print_info_box(gettext("PSK for any user can be set by using an identifier of any."), 'info', false);

include("foot.inc");
