<?php
/* $Id$ */
/*
	services_dhcpv6_edit.php
	part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	Copyright (C) 2011 Seth Mos <seth.mos@dds.nl>.
	Copyright (C) 2013-2015 Electric Sheep Fencing, LP
	All rights reserved.

	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.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS 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
	AUTHOR 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.
*/
/*
	pfSense_BUILDER_BINARIES:	/usr/sbin/arp
	pfSense_MODULE: dhcpserver
*/

##|+PRIV
##|*IDENT=page-services-dhcpserverv6-editstaticmapping
##|*NAME=Services: DHCPv6 Server : Edit static mapping page
##|*DESCR=Allow access to the 'Services: DHCPv6 Server : Edit static mapping' page.
##|*MATCH=services_dhcpv6_edit.php*
##|-PRIV

function staticmapcmp($a, $b) {
	return ipcmp($a['ipaddrv6'], $b['ipaddrv6']);
}

function staticmaps_sort($ifgui) {
	global $g, $config;

	usort($config['dhcpdv6'][$ifgui]['staticmap'], "staticmapcmp");
}

require_once('globals.inc');

if(!$g['services_dhcp_server_enable']) {
	header("Location: /");
	exit;
}

require("guiconfig.inc");

$if = $_GET['if'];
if ($_POST['if']) {
	$if = $_POST['if'];
}

if (!$if) {
	header("Location: services_dhcpv6.php");
	exit;
}

if (!is_array($config['dhcpdv6'])) {
	$config['dhcpdv6'] = array();
}
if (!is_array($config['dhcpdv6'][$if])) {
	$config['dhcpdv6'][$if] = array();
}
if (!is_array($config['dhcpdv6'][$if]['staticmap'])) {
	$config['dhcpdv6'][$if]['staticmap'] = array();
}

$netboot_enabled = isset($config['dhcpdv6'][$if]['netboot']);
$a_maps = &$config['dhcpdv6'][$if]['staticmap'];
$ifcfgipv6 = get_interface_ipv6($if);
$ifcfgsnv6 = get_interface_subnetv6($if);
$ifcfgdescr = convert_friendly_interface_to_friendly_descr($if);

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

if (isset($id) && $a_maps[$id]) {
	$pconfig['duid'] = $a_maps[$id]['duid'];
	$pconfig['hostname'] = $a_maps[$id]['hostname'];
	$pconfig['ipaddrv6'] = $a_maps[$id]['ipaddrv6'];
	$pconfig['filename'] = $a_maps[$id]['filename'];
	$pconfig['rootpath'] = $a_maps[$id]['rootpath'];
	$pconfig['descr'] = $a_maps[$id]['descr'];
} else {
	$pconfig['duid'] = $_GET['duid'];
	$pconfig['hostname'] = $_GET['hostname'];
	$pconfig['filename'] = $_GET['filename'];
	$pconfig['rootpath'] = $a_maps[$id]['rootpath'];
	$pconfig['descr'] = $_GET['descr'];
}

if ($_POST) {

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

	/* input validation */
	$reqdfields = explode(" ", "duid");
	$reqdfieldsn = array(gettext("DUID"));

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

	if ($_POST['hostname']) {
		preg_match("/\-\$/", $_POST['hostname'], $matches);
		if ($matches) {
			$input_errors[] = gettext("The hostname cannot end with a hyphen according to RFC952");
		}
		if (!is_hostname($_POST['hostname'])) {
			$input_errors[] = gettext("The hostname can only contain the characters A-Z, 0-9 and '-'.");
		} else {
			if (!is_unqualified_hostname($_POST['hostname'])) {
				$input_errors[] = gettext("A valid hostname is specified, but the domain name part should be omitted");
			}
		}
	}
	if (($_POST['ipaddrv6'] && !is_ipaddrv6($_POST['ipaddrv6']))) {
		$input_errors[] = gettext("A valid IPv6 address must be specified.");
	}

	if (empty($_POST['duid'])) {
		$input_errors[] = gettext("A valid DUID must be specified.");
	}

	/* check for overlaps */
	foreach ($a_maps as $mapent) {
		if (isset($id) && ($a_maps[$id]) && ($a_maps[$id] === $mapent)) {
			continue;
		}

		if ((($mapent['hostname'] == $_POST['hostname']) && $mapent['hostname']) || ($mapent['duid'] == $_POST['duid'])) {
			$input_errors[] = gettext("This Hostname, IP or DUID already exists.");
			break;
		}
	}

	/* make sure it's not within the dynamic subnet */
	if ($_POST['ipaddrv6']) {
		/* oh boy, we need to be able to somehow do this at some point. skip */
	}

	if (!$input_errors) {
		$mapent = array();
		$mapent['duid'] = $_POST['duid'];
		$mapent['ipaddrv6'] = $_POST['ipaddrv6'];
		$mapent['hostname'] = $_POST['hostname'];
		$mapent['descr'] = $_POST['descr'];
		$mapent['filename'] = $_POST['filename'];
		$mapent['rootpath'] = $_POST['rootpath'];

		if (isset($id) && $a_maps[$id]) {
			$a_maps[$id] = $mapent;
		} else {
			$a_maps[] = $mapent;
		}
		staticmaps_sort($if);

		write_config();

		if (isset($config['dhcpdv6'][$if]['enable'])) {
			mark_subsystem_dirty('staticmaps');
			if (isset($config['dnsmasq']['enable']) && isset($config['dnsmasq']['regdhcpstatic'])) {
				mark_subsystem_dirty('hosts');
			}
			if (isset($config['unbound']['enable']) && isset($config['unbound']['regdhcpstatic'])) {
				mark_subsystem_dirty('unbound');
			}

		}

		header("Location: services_dhcpv6.php?if={$if}");
		exit;
	}
}

$pgtitle = array(gettext("Services"), gettext("DHCPv6"), gettext("Edit static mapping"));
$shortcut_section = "dhcp6";

include("head.inc");

if ($input_errors)
	print_input_errors($input_errors);

require_once('classes/Form.class.php');

$form = new Form();

$section = new Form_Section('Static DHCPv6 Mapping');

$section->addInput(new Form_Input(
	'duid',
	'DUID',
	'text',
	$pconfig['duid'],
	['placeholder' => 'DUID-LLT - ETH -- TIME --- ---- address ---- xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx']
))->setHelp(gettext('Enter a DUID in the following format: ') . '<br />' .
			'DUID-LLT - ETH -- TIME --- ---- address ---- ' .
			'xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx');

$section->addInput(new Form_Input(
	'ipaddrv6',
	'Server 3',
	'text',
	$pconfig['ipaddrv6']
))->setHelp('If an IPv6 address is entered, the address must be outside of the pool.' . '<br />' .
			'If no IPv6 address is given, one will be dynamically allocated from the pool.');

$section->addInput(new Form_Input(
	'hostname',
	'Hostname',
	'text',
	$pconfig['hostname']
))->setHelp('Name of the host, without domain part.');

$section->addInput(new Form_Input(
	'descr',
	'Description',
	'text',
	$pconfig['descr']
))->setHelp('You may enter a description here for your reference (not parsed).');

if($netboot_enabled) {
	$section->addInput(new Form_Input(
		'filename',
		'Netboot filename',
		'text',
		$pconfig['remoteserver3']
	))->setHelp('Name of the file that should be loaded when this host boots off of the network, overrides setting on main page.');

	$section->addInput(new Form_Input(
		'rootpath',
		'Root path',
		'text',
		$pconfig['remoteserver3']
	))->setHelp('Enter the root-path string. This overrides setting on main page.');
}

if (isset($id) && $a_maps[$id]) {
	$section->addInput(new Form_Input(
		'id',
		null,
		'hidden',
		$id
	));
}

$section->addInput(new Form_Input(
	'if',
	null,
	'hidden',
	$if
));

$form->add($section);
print($form);

include("foot.inc");