<?php
/* $Id$ */
/*
	services_dhcpv6.php
	parts of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	All rights reserved.

	part of pfSense (https://www.pfsense.org)
	Copyright (C) 2010 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:	/bin/rm
	pfSense_MODULE: interfaces
*/

##|+PRIV
##|*IDENT=page-services-dhcpv6server
##|*NAME=Services: DHCPv6 server page
##|*DESCR=Allow access to the 'Services: DHCPv6 server' page.
##|*MATCH=services_dhcpv6.php*
##|-PRIV

require("guiconfig.inc");
require_once("filter.inc");

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

/*	Fix failover DHCP problem
 *	http://article.gmane.org/gmane.comp.security.firewalls.pfsense.support/18749
 */
ini_set("memory_limit", "64M");

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

/* if OLSRD is enabled, allow WAN to house DHCP. */
if ($config['installedpackages']['olsrd']) {
	foreach ($config['installedpackages']['olsrd']['config'] as $olsrd) {
		if ($olsrd['enable']) {
			$is_olsr_enabled = true;
			break;
		}
	}
}

$iflist = get_configured_interface_with_descr();
$iflist = array_merge($iflist, get_configured_pppoe_server_interfaces());

/* set the starting interface */
if (!$if || !isset($iflist[$if])) {
	foreach ($iflist as $ifent => $ifname) {
		$oc = $config['interfaces'][$ifent];
		if ((is_array($config['dhcpdv6'][$ifent]) && !isset($config['dhcpdv6'][$ifent]['enable']) && !(is_ipaddrv6($oc['ipaddrv6']) && (!is_linklocal($oc['ipaddrv6'])))) ||
		    (!is_array($config['dhcpdv6'][$ifent]) && !(is_ipaddrv6($oc['ipaddrv6']) && (!is_linklocal($oc['ipaddrv6']))))) {
			continue;
		}
		$if = $ifent;
		break;
	}
}

if (is_array($config['dhcpdv6'][$if])) {
	/* DHCPv6 */
	if (is_array($config['dhcpdv6'][$if]['range'])) {
		$pconfig['range_from'] = $config['dhcpdv6'][$if]['range']['from'];
		$pconfig['range_to'] = $config['dhcpdv6'][$if]['range']['to'];
	}
	if (is_array($config['dhcpdv6'][$if]['prefixrange'])) {
		$pconfig['prefixrange_from'] = $config['dhcpdv6'][$if]['prefixrange']['from'];
		$pconfig['prefixrange_to'] = $config['dhcpdv6'][$if]['prefixrange']['to'];
		$pconfig['prefixrange_length'] = $config['dhcpdv6'][$if]['prefixrange']['prefixlength'];
	}
	$pconfig['deftime'] = $config['dhcpdv6'][$if]['defaultleasetime'];
	$pconfig['maxtime'] = $config['dhcpdv6'][$if]['maxleasetime'];
	$pconfig['domain'] = $config['dhcpdv6'][$if]['domain'];
	$pconfig['domainsearchlist'] = $config['dhcpdv6'][$if]['domainsearchlist'];
	list($pconfig['wins1'], $pconfig['wins2']) = $config['dhcpdv6'][$if]['winsserver'];
	list($pconfig['dns1'], $pconfig['dns2'], $pconfig['dns3'], $pconfig['dns4']) = $config['dhcpdv6'][$if]['dnsserver'];
	$pconfig['enable'] = isset($config['dhcpdv6'][$if]['enable']);
	$pconfig['ddnsdomain'] = $config['dhcpdv6'][$if]['ddnsdomain'];
	$pconfig['ddnsdomainprimary'] = $config['dhcpdv6'][$if]['ddnsdomainprimary'];
	$pconfig['ddnsdomainkeyname'] = $config['dhcpdv6'][$if]['ddnsdomainkeyname'];
	$pconfig['ddnsdomainkey'] = $config['dhcpdv6'][$if]['ddnsdomainkey'];
	$pconfig['ddnsupdate'] = isset($config['dhcpdv6'][$if]['ddnsupdate']);
	list($pconfig['ntp1'], $pconfig['ntp2']) = $config['dhcpdv6'][$if]['ntpserver'];
	$pconfig['tftp'] = $config['dhcpdv6'][$if]['tftp'];
	$pconfig['ldap'] = $config['dhcpdv6'][$if]['ldap'];
	$pconfig['netboot'] = isset($config['dhcpdv6'][$if]['netboot']);
	$pconfig['bootfile_url'] = $config['dhcpdv6'][$if]['bootfile_url'];
	$pconfig['netmask'] = $config['dhcpdv6'][$if]['netmask'];
	$pconfig['numberoptions'] = $config['dhcpdv6'][$if]['numberoptions'];
	$pconfig['dhcpv6leaseinlocaltime'] = $config['dhcpdv6'][$if]['dhcpv6leaseinlocaltime'];
	if (!is_array($config['dhcpdv6'][$if]['staticmap'])) {
		$config['dhcpdv6'][$if]['staticmap'] = array();
	}
	$a_maps = &$config['dhcpdv6'][$if]['staticmap'];
}

$ifcfgip = get_interface_ipv6($if);
$ifcfgsn = get_interface_subnetv6($if);

/*	 set the enabled flag which will tell us if DHCP relay is enabled
 *	 on any interface. We will use this to disable DHCP server since
 *	 the two are not compatible with each other.
 */

$dhcrelay_enabled = false;
$dhcrelaycfg = $config['dhcrelay6'];

if (is_array($dhcrelaycfg)) {
	foreach ($dhcrelaycfg as $dhcrelayif => $dhcrelayifconf) {
		if (isset($dhcrelayifconf['enable']) && isset($iflist[$dhcrelayif]) &&
		    (!link_interface_to_bridge($dhcrelayif))) {
			$dhcrelay_enabled = true;
		}
	}
}

if ($_POST) {
	unset($input_errors);

	$old_dhcpdv6_enable = ($pconfig['enable'] == true);
	$new_dhcpdv6_enable = ($_POST['enable'] ? true : false);
	$dhcpdv6_enable_changed = ($old_dhcpdv6_enable != $new_dhcpdv6_enable);

	$pconfig = $_POST;

	$numberoptions = array();
	for ($x = 0; $x < 99; $x++) {
		if (isset($_POST["number{$x}"]) && ctype_digit($_POST["number{$x}"])) {
			$numbervalue = array();
			$numbervalue['number'] = htmlspecialchars($_POST["number{$x}"]);
			$numbervalue['value'] = htmlspecialchars($_POST["value{$x}"]);
			$numberoptions['item'][] = $numbervalue;
		}
	}
	// Reload the new pconfig variable that the forum uses.
	$pconfig['numberoptions'] = $numberoptions;

	/* input validation */
	if ($_POST['enable']) {
		$reqdfields = explode(" ", "range_from range_to");
		$reqdfieldsn = array(gettext("Range begin"), gettext("Range end"));

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

		if (($_POST['prefixrange_from'] && !is_ipaddrv6($_POST['prefixrange_from']))) {
			$input_errors[] = gettext("A valid range must be specified.");
		}
		if (($_POST['prefixrange_to'] && !is_ipaddrv6($_POST['prefixrange_to']))) {
			$input_errors[] = gettext("A valid prefix range must be specified.");
		}
		if (($_POST['range_from'] && !is_ipaddrv6($_POST['range_from']))) {
			$input_errors[] = gettext("A valid range must be specified.");
		}
		if (($_POST['range_to'] && !is_ipaddrv6($_POST['range_to']))) {
			$input_errors[] = gettext("A valid range must be specified.");
		}
		if (($_POST['gateway'] && !is_ipaddrv6($_POST['gateway']))) {
			$input_errors[] = gettext("A valid IPv6 address must be specified for the gateway.");
		}
		if (($_POST['dns1'] && !is_ipaddrv6($_POST['dns1'])) ||
		    ($_POST['dns2'] && !is_ipaddrv6($_POST['dns2'])) ||
		    ($_POST['dns3'] && !is_ipaddrv6($_POST['dns3'])) ||
		    ($_POST['dns4'] && !is_ipaddrv6($_POST['dns4']))) {
			$input_errors[] = gettext("A valid IPv6 address must be specified for each of the DNS servers.");
		}

		if ($_POST['deftime'] && (!is_numeric($_POST['deftime']) || ($_POST['deftime'] < 60))) {
			$input_errors[] = gettext("The default lease time must be at least 60 seconds.");
		}
		if ($_POST['maxtime'] && (!is_numeric($_POST['maxtime']) || ($_POST['maxtime'] < 60) || ($_POST['maxtime'] <= $_POST['deftime']))) {
			$input_errors[] = gettext("The maximum lease time must be at least 60 seconds and higher than the default lease time.");
		}
		if (($_POST['ddnsdomain'] && !is_domain($_POST['ddnsdomain']))) {
			$input_errors[] = gettext("A valid domain name must be specified for the dynamic DNS registration.");
		}
		if (($_POST['ddnsdomain'] && !is_ipaddrv4($_POST['ddnsdomainprimary']))) {
			$input_errors[] = gettext("A valid primary domain name server IPv4 address must be specified for the dynamic domain name.");
		}
		if (($_POST['ddnsdomainkey'] && !$_POST['ddnsdomainkeyname']) ||
		    ($_POST['ddnsdomainkeyname'] && !$_POST['ddnsdomainkey'])) {
			$input_errors[] = gettext("You must specify both a valid domain key and key name.");
		}
		if ($_POST['domainsearchlist']) {
			$domain_array=preg_split("/[ ;]+/", $_POST['domainsearchlist']);
			foreach ($domain_array as $curdomain) {
				if (!is_domain($curdomain)) {
					$input_errors[] = gettext("A valid domain search list must be specified.");
					break;
				}
			}
		}

		if (($_POST['ntp1'] && !is_ipaddrv6($_POST['ntp1'])) || ($_POST['ntp2'] && !is_ipaddrv6($_POST['ntp2']))) {
			$input_errors[] = gettext("A valid IPv6 address must be specified for the primary/secondary NTP servers.");
		}
		if (($_POST['domain'] && !is_domain($_POST['domain']))) {
			$input_errors[] = gettext("A valid domain name must be specified for the DNS domain.");
		}
		if ($_POST['tftp'] && !is_ipaddr($_POST['tftp']) && !is_domain($_POST['tftp']) && !is_URL($_POST['tftp'])) {
			$input_errors[] = gettext("A valid IPv6 address or hostname must be specified for the TFTP server.");
		}
		if (($_POST['bootfile_url'] && !is_URL($_POST['bootfile_url']))) {
			$input_errors[] = gettext("A valid URL must be specified for the network bootfile.");
		}

		// Disallow a range that includes the virtualip
		if (is_array($config['virtualip']['vip'])) {
			foreach ($config['virtualip']['vip'] as $vip) {
				if ($vip['interface'] == $if) {
					if ($vip['subnetv6'] && is_inrange_v6($vip['subnetv6'], $_POST['range_from'], $_POST['range_to'])) {
						$input_errors[] = sprintf(gettext("The subnet range cannot overlap with virtual IPv6 address %s."), $vip['subnetv6']);
					}
				}
			}
		}

		$noip = false;
		if (is_array($a_maps)) {
			foreach ($a_maps as $map) {
				if (empty($map['ipaddrv6'])) {
					$noip = true;
				}
			}
		}
		if (!$input_errors) {
			/* make sure the range lies within the current subnet */
			$subnet_start = gen_subnetv6($ifcfgip, $ifcfgsn);
			$subnet_end = gen_subnetv6_max($ifcfgip, $ifcfgsn);

			if (is_ipaddrv6($ifcfgip)) {
				if ((!is_inrange_v6($_POST['range_from'], $subnet_start, $subnet_end)) ||
				    (!is_inrange_v6($_POST['range_to'], $subnet_start, $subnet_end))) {
					$input_errors[] = gettext("The specified range lies outside of the current subnet.");
				}
			}
			/* "from" cannot be higher than "to" */
			if (inet_pton($_POST['range_from']) > inet_pton($_POST['range_to'])) {
				$input_errors[] = gettext("The range is invalid (first element higher than second element).");
			}

			/* make sure that the DHCP Relay isn't enabled on this interface */
			if (isset($config['dhcrelay'][$if]['enable'])) {
				$input_errors[] = sprintf(gettext("You must disable the DHCP relay on the %s interface before enabling the DHCP server."), $iflist[$if]);
			}


			/* Verify static mappings do not overlap:
			   - available DHCP range
			   - prefix delegation range (FIXME: still need to be completed) */
			$dynsubnet_start = inet_pton($_POST['range_from']);
			$dynsubnet_end = inet_pton($_POST['range_to']);

			if (is_array($a_maps)) {
				foreach ($a_maps as $map) {
					if (empty($map['ipaddrv6'])) {
						continue;
					}
					if ((inet_pton($map['ipaddrv6']) > $dynsubnet_start) &&
					    (inet_pton($map['ipaddrv6']) < $dynsubnet_end)) {
						$input_errors[] = sprintf(gettext("The DHCP range cannot overlap any static DHCP mappings."));
						break;
					}
				}
			}
		}
	}

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

		$config['dhcpdv6'][$if]['range']['from'] = $_POST['range_from'];
		$config['dhcpdv6'][$if]['range']['to'] = $_POST['range_to'];
		$config['dhcpdv6'][$if]['prefixrange']['from'] = $_POST['prefixrange_from'];
		$config['dhcpdv6'][$if]['prefixrange']['to'] = $_POST['prefixrange_to'];
		$config['dhcpdv6'][$if]['prefixrange']['prefixlength'] = $_POST['prefixrange_length'];
		$config['dhcpdv6'][$if]['defaultleasetime'] = $_POST['deftime'];
		$config['dhcpdv6'][$if]['maxleasetime'] = $_POST['maxtime'];
		$config['dhcpdv6'][$if]['netmask'] = $_POST['netmask'];

		unset($config['dhcpdv6'][$if]['winsserver']);

		unset($config['dhcpdv6'][$if]['dnsserver']);
		if ($_POST['dns1']) {
			$config['dhcpdv6'][$if]['dnsserver'][] = $_POST['dns1'];
		}
		if ($_POST['dns2']) {
			$config['dhcpdv6'][$if]['dnsserver'][] = $_POST['dns2'];
		}
		if ($_POST['dns3']) {
			$config['dhcpdv6'][$if]['dnsserver'][] = $_POST['dns3'];
		}
		if ($_POST['dns4']) {
			$config['dhcpdv6'][$if]['dnsserver'][] = $_POST['dns4'];
		}

		$config['dhcpdv6'][$if]['domain'] = $_POST['domain'];
		$config['dhcpdv6'][$if]['domainsearchlist'] = $_POST['domainsearchlist'];
		$config['dhcpdv6'][$if]['enable'] = ($_POST['enable']) ? true : false;
		$config['dhcpdv6'][$if]['ddnsdomain'] = $_POST['ddnsdomain'];
		$config['dhcpdv6'][$if]['ddnsdomainprimary'] = $_POST['ddnsdomainprimary'];
		$config['dhcpdv6'][$if]['ddnsdomainkeyname'] = $_POST['ddnsdomainkeyname'];
		$config['dhcpdv6'][$if]['ddnsdomainkey'] = $_POST['ddnsdomainkey'];
		$config['dhcpdv6'][$if]['ddnsupdate'] = ($_POST['ddnsupdate']) ? true : false;

		unset($config['dhcpdv6'][$if]['ntpserver']);
		if ($_POST['ntp1']) {
			$config['dhcpdv6'][$if]['ntpserver'][] = $_POST['ntp1'];
		}
		if ($_POST['ntp2']) {
			$config['dhcpdv6'][$if]['ntpserver'][] = $_POST['ntp2'];
		}

		$config['dhcpdv6'][$if]['tftp'] = $_POST['tftp'];
		$config['dhcpdv6'][$if]['ldap'] = $_POST['ldap'];
		$config['dhcpdv6'][$if]['netboot'] = ($_POST['netboot']) ? true : false;
		$config['dhcpdv6'][$if]['bootfile_url'] = $_POST['bootfile_url'];
		$config['dhcpdv6'][$if]['dhcpv6leaseinlocaltime'] = $_POST['dhcpv6leaseinlocaltime'];

		// Handle the custom options rowhelper
		if (isset($config['dhcpdv6'][$if]['numberoptions']['item'])) {
			unset($config['dhcpdv6'][$if]['numberoptions']['item']);
		}

		$config['dhcpdv6'][$if]['numberoptions'] = $numberoptions;

		write_config();

		$retval = 0;
		$retvaldhcp = 0;
		$retvaldns = 0;
		/* Stop DHCPv6 so we can cleanup leases */
		killbypid("{$g['dhcpd_chroot_path']}{$g['varrun_path']}/dhcpdv6.pid");
		// dhcp_clean_leases();
		/* dnsmasq_configure calls dhcpd_configure */
		/* no need to restart dhcpd twice */
		if (isset($config['dnsmasq']['enable']) && isset($config['dnsmasq']['regdhcpstatic']))	{
			$retvaldns = services_dnsmasq_configure();
			if ($retvaldns == 0) {
				clear_subsystem_dirty('hosts');
				clear_subsystem_dirty('staticmaps');
			}
		} else if (isset($config['unbound']['enable']) && isset($config['unbound']['regdhcpstatic'])) {
			$retvaldns = services_unbound_configure();
			if ($retvaldns == 0) {
				clear_subsystem_dirty('unbound');
				clear_subsystem_dirty('staticmaps');
			}
		} else {
			$retvaldhcp = services_dhcpd_configure();
			if ($retvaldhcp == 0) {
				clear_subsystem_dirty('staticmaps');
			}
		}
		if ($dhcpdv6_enable_changed) {
			$retvalfc = filter_configure();
		}
		if ($retvaldhcp == 1 || $retvaldns == 1 || $retvalfc == 1) {
			$retval = 1;
		}
		$savemsg = get_std_save_message($retval);
	}
}

if ($_GET['act'] == "del") {
	if ($a_maps[$_GET['id']]) {
		unset($a_maps[$_GET['id']]);
		write_config();
		if (isset($config['dhcpdv6'][$if]['enable'])) {
			mark_subsystem_dirty('staticmapsv6');
			if (isset($config['dnsmasq']['enable']) && isset($config['dnsmasq']['regdhcpstaticv6'])) {
				mark_subsystem_dirty('hosts');
			}
		}
		header("Location: services_dhcpv6.php?if={$if}");
		exit;
	}
}

// Delete a row in the options table
if($_GET['act'] == "delopt") {
	$idx = $_GET['id'];

	if($pconfig['numberoptions'] && is_array($pconfig['numberoptions']['item'][$idx])) {
	   unset($pconfig['numberoptions']['item'][$idx]);
	}
}

// Add an option row
if($_GET['act'] == "addopt") {
	if(!is_array($pconfig['numberoptions']['item']))
		$pconfig['numberoptions']['item'] = array();

	array_push($pconfig['numberoptions']['item'], array('number' => null, 'value' => null));
}

$closehead = false;
$pgtitle = array(gettext("Services"), gettext("DHCPv6 server"));
$shortcut_section = "dhcp6";

include("head.inc");

if ($input_errors)
	print_input_errors($input_errors);

if ($savemsg)
	print_info_box($savemsg, 'success');

if ($dhcrelay_enabled) {
	print_info_box(gettext("DHCP Relay is currently enabled. Cannot enable the DHCP Server service while the DHCP Relay is enabled on any interface."), 'danger');
	include("foot.inc");
	exit;
}

if (is_subsystem_dirty('staticmaps'))
	print_info_box_np(gettext('The static mapping configuration has been changed') . '.<br />' . gettext('You must apply the changes in order for them to take effect.'));

/* active tabs */
$tab_array = array();
$tabscounter = 0;
$i = 0;
foreach ($iflist as $ifent => $ifname) {
	$oc = $config['interfaces'][$ifent];
	if ((is_array($config['dhcpdv6'][$ifent]) && !isset($config['dhcpdv6'][$ifent]['enable']) && !(is_ipaddrv6($oc['ipaddrv6']) && (!is_linklocal($oc['ipaddrv6'])))) ||
		(!is_array($config['dhcpdv6'][$ifent]) && !(is_ipaddrv6($oc['ipaddrv6']) && (!is_linklocal($oc['ipaddrv6'])))))
		continue;

	if ($ifent == $if)
		$active = true;
	else
		$active = false;

	$tab_array[] = array($ifname, $active, "services_dhcpv6.php?if={$ifent}");
	$tabscounter++;
}
/* tack on PPPoE or PPtP servers here */
/* pppoe server */
if (is_array($config['pppoes']['pppoe'])) {
	foreach($config['pppoes']['pppoe'] as $pppoe) {
		if ($pppoe['mode'] == "server") {
			$ifent = "poes". $pppoe['pppoeid'];
			$ifname = strtoupper($ifent);

			if ($ifent == $if)
				$active = true;
			else
				$active = false;

			$tab_array[] = array($ifname, $active, "services_dhcpv6.php?if={$ifent}");
			$tabscounter++;
		}
	}
}

if (empty($tabs_array)) {
	print_info_box(gettext("The DHCPv6 Server can only be enabled on interfaces configured with a static IPv6 address. This system has none."), 'danger');
	include("foot.inc");
	exit;
}

$tab_array = array();
$tab_array[] = array(gettext("DHCPv6 Server"),		 true,	"services_dhcpv6.php?if={$if}");
$tab_array[] = array(gettext("Router Advertisements"), false, "services_router_advertisements.php?if={$if}");
display_top_tabs($tab_array);

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

$form = new Form(new Form_Button(
	'Submit',
	'Save'
));

$section = new Form_Section('DHCPv6 Options');

$section->addInput(new Form_Checkbox(
	'enable',
	'DHCPv6 Server',
	'Enable DHCPv6 server on interface ' . $iflist[$if],
	$pconfig['enable']
))->toggles('.form-group:not(:first-child)');

if(is_ipaddrv6($ifcfgip)) {

	$section->addInput(new Form_StaticText(
		'Subnet',
		gen_subnetv6($ifcfgip, $ifcfgsn)
		));

	$section->addInput(new Form_StaticText(
		'Subnet Mask',
		$ifcfgsn . ' bits'
		));

	$section->addInput(new Form_StaticText(
		'Available Range',
		$range_from = gen_subnetv6($ifcfgip, $ifcfgsn) . ' to ' . gen_subnetv6_max($ifcfgip, $ifcfgsn)
		));
}

if($is_olsr_enabled) {
	$section->addInput(new Form_Select(
	'netmask',
	'Subnetmask',
	$pconfig['netmask'],
	array_combine(range(128, 1, -1), range(128, 1, -1))
	));
}

$f1 = new Form_Input(
	'range_from',
	null,
	'text',
	$pconfig['range_from']
);

$f1->setHelp('To');

$f2 = new Form_Input(
	'range_to',
	null,
	'text',
	$pconfig['range_to']
);

$f2->setHelp('From');

$group = new Form_Group('Range');

$group->add($f1);
$group->add($f2);

$section->add($group);

$f1 = new Form_Input(
	'prefix_from',
	null,
	'text',
	$pconfig['prefix_from']
);

$f1->setHelp('To');

$f2 = new Form_Input(
	'prefix_to',
	null,
	'text',
	$pconfig['prefix_to']
);

$f2->setHelp('From');
$group = new Form_Group('Prefix Delegation Range');

$group->add($f1);
$group->add($f2);

$section->add($group);

$section->addInput(new Form_Select(
	'prefixrange_length',
	'Prefix Delegation Size',
	$pconfig['prefixrange_length'],
	array(
		'48' => '48',
		'52' => '52',
		'56' => '56',
		'60' => '60',
		'62' => '62',
		'63' => '63',
		'64' => '64'
		)
))->setHelp('You can define a Prefix range here for DHCP Prefix Delegation. This allows for assigning networks to subrouters. The start and end of the range must end on boundaries of the prefix delegation size.');

$group = new Form_Group('DNS Servers');

for($i=1;$i<=4; $i++) {
	$group->add(new Form_input(
		'dns' . $i,
		null,
		'text',
		$pconfig['dns' . $i]
	))->setHelp('DNS ' . $i);
}

$group->setHelp('Leave blank to use the system default DNS servers,this interface\'s IP if DNS forwarder is enabled, or the servers configured on the "General" page.');
$section->add($group);

$section->addInput(new Form_Input(
	'domain',
	'Domain Name',
	'text',
	$pconfig['domain']
))->setHelp('The default is to use the domain name of this system as the default domain name provided by DHCP. You may specify an alternate domain name here. ');

$section->addInput(new Form_Input(
	'domainsearchlist',
	'Domain search list',
	'text',
	$pconfig['domainsearchlist']
))->setHelp('The DHCP server can optionally provide a domain search list. Use the semicolon character as separator');

$section->addInput(new Form_Input(
	'deftime',
	'Default lease time',
	'text',
	$pconfig['deftime']
))->setHelp('Seconds . Used for clients that do not ask for a specific expiration time. ' . ' <br />' .
			'The default is 7200 seconds.');

$section->addInput(new Form_Input(
	'maxtime',
	'Max lease time',
	'text',
	$pconfig['maxtime']
))->setHelp('Maximum lease time for clients that ask for a specific expiration time.' . ' <br />' .
			'The default is 86400 seconds.');

$section->addInput(new Form_Checkbox(
	'dhcpv6leaseinlocaltime',
	'Time Format Change',
	'Change DHCPv6 display lease time from UTC to local time',
	$pconfig['dhcpv6leaseinlocaltime']
))->setHelp('By default DHCPv6 leases are displayed in UTC time. ' .
			'By checking this box DHCPv6 lease time will be displayed in local time and set to time zone selected. ' .
			'This will be used for all DHCPv6 interfaces lease time.');

$btndyndns = new Form_Button(
	'btndyndns',
	'Advanced'
);

$btndyndns->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(
	'Dynamic DNS',
	$btndyndns . '&nbsp;' . 'Show dynamic DNS settings'
));

$section->addInput(new Form_Checkbox(
	'ddnsupdate',
	'DHCP Registration',
	'Enable registration of DHCP client names in DNS.',
	$pconfig['ddnsupdate']
));

$section->addInput(new Form_Input(
	'ddnsdomain',
	'DDNS Domain',
	'text',
	$pconfig['ddnsdomain']
))->setHelp('Leave blank to disable dynamic DNS registration. Enter the dynamic DNS domain which will be used to register client names in the DNS server.');

$section->addInput(new Form_IpAddress(
	'ddnsdomainprimary',
	'DDNS Server IP',
	$pconfig['ddnsdomainprimary']
))->setHelp('Enter the primary domain name server IP address for the dynamic domain name.');

$section->addInput(new Form_Input(
	'ddnsdomainkeyname',
	'DDNS Domain Key name',
	'text',
	$pconfig['ddnsdomainkeyname']
))->setHelp('Enter the dynamic DNS domain key name which will be used to register client names in the DNS server.');

$section->addInput(new Form_Input(
	'ddnsdomainkey',
	'DDNS Domain Key secret',
	'text',
	$pconfig['ddnsdomainkey']
))->setHelp('Enter the dynamic DNS domain key secret which will be used to register client names in the DNS server.');

$btnntp = new Form_Button(
	'btnntp',
	'Advanced'
);

$btnntp->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(
	'NTP servers',
	$btnntp . '&nbsp;' . 'Show NTP Configuration'
));

$group = new Form_Group('NTP Servers');

$group->add(new Form_Input(
	'ntp1',
	'NTP Server 1',
	'text',
	$pconfig['ntp1'],
	['placeholder' => 'NTP 1']
));

$group->add(new Form_Input(
	'ntp2',
	'NTP Server 1',
	'text',
	$pconfig['ntp2'],
	['placeholder' => 'NTP 2']
));

$group->addClass('ntpclass');

$section->add($group);

$btnldap = new Form_Button(
	'btnldap',
	'Advanced'
);

$btnldap->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(
	'LDAP',
	$btnldap . '&nbsp;' . 'Show LDAP Configuration'
));

$section->addInput(new Form_Input(
	'ldap',
	'LDAP URI',
	'text',
	$pconfig['ldap']
));

$btnnetboot = new Form_Button(
	'btnnetboot',
	'Advanced'
);

$btnnetboot->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(
	'Network booting',
	$btnnetboot . '&nbsp;' . 'Show Netwok booting'
));

$section->addInput(new Form_Checkbox(
	'shownetboot',
	'Network booting',
	'Enable Network Booting',
	$pconfig['shownetboot']
));

$section->addInput(new Form_Input(
	'bootfile_url',
	'Bootfile URL',
	'text',
	$pconfig['bootfile_url']
));

$btnadnl = new Form_Button(
	'btnadnl',
	'Advanced'
);

$btnadnl->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(
	'Additional BOOTP/DHCP Options',
	$btnadnl . '&nbsp;' . 'Aditional BOOTP/DHCP Options'
));

$form->add($section);

$title = 'Show Additional BOOTP/DHCP Options';

if($pconfig['numberoptions']) {
	$counter = 0;
	$last = count($pconfig['numberoptions']['item']) - 1;

	foreach($pconfig['numberoptions']['item'] as $item) {
		$group = new Form_Group(null);

		$group->add(new Form_Input(
			'number' . $counter,
			null,
			'text',
			$item['number']
		))->setHelp($counter == $last ? 'Number':null);

		$group->add(new Form_Input(
			'value' . $counter,
			null,
			'text',
			$item['value']
		))->setHelp($counter == $last ? 'Value':null);

		$btn = new Form_Button(
			'btn' . $counter,
			'Delete',
			'services_dhcpv6.php?if=' . $if . '&act=delopt' . '&id=' . $counter
		);

		$btn->removeClass('btn-primary')->addClass('btn-danger btn-xs adnlopt');
		$group->addClass('adnlopt');
		$group->add($btn);
		$section->add($group);
		$counter++;
	}
}

$btnaddopt = new Form_Button(
	'btnaddopt',
	'Add Option',
	'services_dhcpv6.php?if=' . $if . '&act=addopt'
);

$btnaddopt->removeClass('btn-primary')->addClass('btn-success btn-sm');

$section->addInput($btnaddopt);

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

print($form);

print_info_box(gettext('The DNS servers entered in ') . '<a href="system.php">' . gettext(' System: General setup') . '</a>' .
			   gettext(' (or the ') . '<a href="services_dnsmasq.php"/>' . gettext('DNS forwarder') . '</a>, ' . gettext('if enabled) ') .
			   gettext('will be assigned to clients by the DHCP server.') . '<br />' .
			   gettext('The DHCP lease table can be viewed on the ') . '<a href="status_dhcpv6_leases.php">' .
			   gettext('Status: DHCPv6 leases') . '</a>' . gettext(' page.'));
?>

<div class="panel panel-default">
	<div class="panel-heading"><h2 class="panel-title">DHCPv6 Static Mappings for this interface.</h2></div>
	<div class="panel-body table-responsive">
		<table class="table table-striped table-hover table-condensed">
			<thead>
				<tr>
					<th><?=gettext("DUID")?></th>
					<th><?=gettext("IPv6 address")?></th>
					<th><?=gettext("Hostname")?></th>
					<th><?=gettext("Description")?></th>
					<th><!-- Buttons --></th>
				</tr>
			</thead>
			<tbody>
<?php
if(is_array($a_maps)):
	$i = 0;
	foreach ($a_maps as $mapent):
		if($mapent['duid'] != "" or $mapent['ipaddrv6'] != ""):
?>
				<tr>
					<td>
						<?=htmlspecialchars($mapent['duid'])?>
					</td>
					<td>
						<?=htmlspecialchars($mapent['ipaddrv6'])?>
					</td>
					<td>
						<?=htmlspecialchars($mapent['hostname'])?>
					</td>
					<td>
						<?=htmlspecialchars($mapent['descr'])?>
					</td>
					<td>
						<a href="services_dhcpv6_edit.php?if=<?=$if?>&amp;id=<?=$i?>" class="btn btn-info btn-xs"/>Edit</a>
						<a href="services_dhcpv6.php?if=<?=$if?>&amp;act=del&amp;id=<?=$i?>" class="btn btn-danger btn-xs"/>Delete</a>
					</td>
				</tr>
<?php
		endif;
	$i++;
	endforeach;
endif;
?>
			</tbody>
		</table>
	</div>
</div>

<nav class="action-buttons">
	<a href="services_dhcpv6_edit.php?if=<?=$if?>" class="btn btn-sm btn-success"/>Add</a>
</nav>

<script>
//<![CDATA[
events.push(function(){
	// Hides the <div> in which the specified input element lives so that the input, its label and help text are hidden
	function hideInput(id, hide) {
		if(hide)
			$('#' + id).parent().parent('div').addClass('hidden');
		else
			$('#' + id).parent().parent('div').removeClass('hidden');
	}

	// Hides the <div> in which the specified icheckbox lives so that the input, its label and help text are hidden
	// Checkboxes live inside <label></label> tags so we need another parent level
	function hideCheckBox(id, hide) {
		if(hide)
			$('#' + id).parent().parent().parent('div').addClass('hidden');
		else
			$('#' + id).parent().parent().parent('div').removeClass('hidden');
	}

	// Hides all elements of the specified class. This will usually be a section or group
	function hideClass(s_class, hide) {
		if(hide)
			$('.' + s_class).hide();
		else
			$('.' + s_class).show();
	}

	function hideDDNS(hide) {
		hideCheckBox('ddnsupdate', hide);
		hideInput('ddnsdomain', hide);
		hideInput('ddnsdomainprimary', hide);
		hideInput('ddnsdomainkeyname', hide);
		hideInput('ddnsdomainkey', hide);
	}

	// Make the ‘Copy My MAC’ button a plain button, not a submit button
	$("#btnmymac").prop('type','button');

	// On click, copy the hidden 'mymac' text to the 'mac' input
	$("#btnmymac").click(function() {
		$('#mac').val('<?=$mymac?>');
	});

	// Make the ‘tftp’ button a plain button, not a submit button
	$("#btntftp").prop('type','button');

	// Show tftp controls
	$("#btntftp").click(function() {
		hideInput('tftp', false);
	});

	// Make the ‘ntp’ button a plain button, not a submit button
	$("#btnntp").prop('type','button');

	// Show ntp controls
	$("#btnntp").click(function() {
		hideClass('ntpclass', false);
	});

	// Make the ‘ddns’ button a plain button, not a submit button
	$("#btndyndns").prop('type','button');

	// Show ddns controls
	$("#btndyndns").click(function() {
		hideDDNS(false);
	});

	// Make the ‘ldap’ button a plain button, not a submit button
	$("#btnldap").prop('type','button');

	// Show ldap controls
	$("#btnldap").click(function() {
		hideInput('ldap', false);
	});

	// Make the ‘netboot’ button a plain button, not a submit button
	$("#btnnetboot").prop('type','button');

	// Show netboot controls
	$("#btnnetboot").click(function() {
		hideInput('bootfile_url', false);
		hideCheckBox('shownetboot', false);
	});

	// Make the ‘aditional options’ button a plain button, not a submit button
	$("#btnadnl").prop('type','button');

	// Show aditional  controls
	$("#btnadnl").click(function() {
		hideClass('adnlopt', false);
		hideInput('btnaddopt', false);
	});

	// On initial load
	hideDDNS(true);
	hideClass('ntpclass', true);
	hideInput('tftp', true);
	hideInput('ldap', true);
	hideInput('bootfile_url', true);
	hideCheckBox('shownetboot', true);
	hideClass('adnlopt', true);
	hideInput('btnaddopt', true);
});
//]]>
</script>

<?php include('foot.inc');