<?php

/*
	Copyright (C) 2014-2015 Deciso B.V.
	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	Copyright (C) 2010 Seth Mos <seth.mos@dds.nl>.
	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.
*/

require_once("guiconfig.inc");
require_once("filter.inc");
require_once("system.inc");
require_once("unbound.inc");
require_once("pfsense-utils.inc");
require_once("interfaces.inc");
require_once("services.inc");

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

if (!$_GET['if']) {
	$savemsg = gettext(
		"The DHCPv6 Server can only be enabled on interfaces configured with static " .
		"IP addresses. Only interfaces configured with a static IP will be shown."
	);
}

$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']) = $config['dhcpdv6'][$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);

	if ($_POST['apply'] != 'Apply changes') {
		$old_dhcpdv6_enable = ($pconfig['enable'] == true);
		$new_dhcpdv6_enable = ($_POST['enable'] ? true : false);
		$dhcpdv6_enable_changed = ($old_dhcpdv6_enable != $new_dhcpdv6_enable);
		$pconfig = $_POST;
        } else {
                $dhcpdv6_enable_changed = false;
        }


	$numberoptions = array();
	for($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'])))
			$input_errors[] = gettext("A valid IPv6 address must be specified for the primary/secondary 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 && $_POST['apply'] != 'Apply changes') {
		if (!is_array($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'];

		$config['dhcpdv6'][$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();
	}

	if (!$input_errors || $_POST['apply'] == 'Apply changes') {
		/* Stop DHCPv6 so we can cleanup leases */
		killbypid("{$g['dhcpd_chroot_path']}/var/run/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');
		} 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();
        }
}

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;
	}
}

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

include("head.inc");

?>

<body>
<script type="text/javascript" src="/javascript/row_helper.js">
</script>

<script type="text/javascript">
//<![CDATA[
	rowname[0] = "number";
	rowtype[0] = "textbox";
	rowsize[0] = "10";
	rowname[1] = "value";
	rowtype[1] = "textbox";
	rowsize[1] = "55";
//]]>
</script>

<script type="text/javascript">
//<![CDATA[
	function enable_change(enable_over) {
		var endis;
		endis = !(document.iform.enable.checked || enable_over);
		document.iform.range_from.disabled = endis;
		document.iform.range_to.disabled = endis;
		document.iform.prefixrange_from.disabled = endis;
		document.iform.prefixrange_to.disabled = endis;
		document.iform.prefixrange_length.disabled = endis;
		document.iform.dns1.disabled = endis;
		document.iform.dns2.disabled = endis;
		document.iform.deftime.disabled = endis;
		document.iform.maxtime.disabled = endis;
		//document.iform.gateway.disabled = endis;
		document.iform.dhcpv6leaseinlocaltime.disabled = endis;
		document.iform.domain.disabled = endis;
		document.iform.domainsearchlist.disabled = endis;
		document.iform.ddnsdomain.disabled = endis;
		document.iform.ddnsdomainprimary.disabled = endis;
		document.iform.ddnsdomainkeyname.disabled = endis;
		document.iform.ddnsdomainkey.disabled = endis;
		document.iform.ddnsupdate.disabled = endis;
		document.iform.ntp1.disabled = endis;
		document.iform.ntp2.disabled = endis;
		//document.iform.tftp.disabled = endis;
		document.iform.ldap.disabled = endis;
		document.iform.netboot.disabled = endis;
		document.iform.bootfile_url.disabled = endis;
	}

	function show_shownumbervalue() {
		document.getElementById("shownumbervaluebox").innerHTML='';
		aodiv = document.getElementById('shownumbervalue');
		aodiv.style.display = "block";
	}

	function show_ddns_config() {
		document.getElementById("showddnsbox").innerHTML='';
		aodiv = document.getElementById('showddns');
		aodiv.style.display = "block";
	}
	function show_ntp_config() {
		document.getElementById("showntpbox").innerHTML='';
		aodiv = document.getElementById('showntp');
		aodiv.style.display = "block";
	}
	/*
	function show_tftp_config() {
		document.getElementById("showtftpbox").innerHTML='';
		aodiv = document.getElementById('showtftp');
		aodiv.style.display = "block";
	}
	*/
	function show_ldap_config() {
		document.getElementById("showldapbox").innerHTML='';
		aodiv = document.getElementById('showldap');
		aodiv.style.display = "block";
	}

	function show_netboot_config() {
		document.getElementById("shownetbootbox").innerHTML='';
		aodiv = document.getElementById('shownetboot');
		aodiv.style.display = "block";
	}
//]]>
</script>


<?php include("fbegin.inc"); ?>

	<section class="page-content-main">

		<div class="container-fluid">

			<div class="row">

				<?php if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
				<?php if (isset($savemsg)) print_info_box($savemsg); ?>
				<?php if (is_subsystem_dirty('staticmaps')): ?><p>
				<?php print_info_box_apply(gettext("The static mapping configuration has been changed") . ".<br />" . gettext("You must apply the changes in order for them to take effect."));?><br />
				<?php endif; ?>

			    <section class="col-xs-12">
				<?php
						/* 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}");
									$tabscounter++;
								}
							}
						}
						if ($tabscounter == 0) {
							echo "</section>";
							echo "</div>";
							echo "</div>";
							echo "</section>";
							include("foot.inc");
							exit;
						}
						display_top_tabs($tab_array);
					?>

				    <?php
							$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);
					?>

				<div class="tab-content content-box col-xs-12">

                        <form action="services_dhcpv6.php" method="post" name="iform" id="iform">

							<?php if ($dhcrelay_enabled): ?>
								<p>DHCP Relay is currently enabled. Cannot enable the DHCP Server service while the DHCP Relay is enabled on any interface.</p>
							<? else: ?>

						    <!--<ul class="nav nav-pills" role="tablist"><? foreach ($tab_array as $tab): ?>
									<li role="presentation" <? if ($tab[1]):?>class="active"<? endif; ?>><a href="<?=$tab[2];?>"><?=$tab[0];?></a></li>
								<? endforeach; ?></ul><br />-->

						    <div class="table-responsive">
									<table class="table table-striped table-sort">
										<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("DHCPv6 Server");?></td>
											<td width="78%" class="vtable">
												<input name="enable" type="checkbox" value="yes" <?php if ($pconfig['enable']) echo "checked=\"checked\""; ?> onclick="enable_change(false);" />
											<strong><?php printf(gettext("Enable DHCPv6 server on " .
											"%s " .
											"interface"),htmlspecialchars($iflist[$if]));?></strong></td>
											</tr>
											<?php
											/* the PPPoE Server could well have no IPv6 address and operate fine with just link-local, just hide these */
											if(is_ipaddrv6($ifcfgip)) {
											?>
											<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("Subnet");?></td>
											<td width="78%" class="vtable">
												<?=gen_subnetv6($ifcfgip, $ifcfgsn);?>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("Subnet mask");?></td>
											<td width="78%" class="vtable">
												<?=$ifcfgsn;?> bits
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("Available range");?></td>
											<td width="78%" class="vtable">
											<?php
												$range_from = gen_subnetv6($ifcfgip, $ifcfgsn);
												$range_from++;
												echo $range_from;

											?>
											-
											<?php
												$range_to = gen_subnetv6_max($ifcfgip, $ifcfgsn);
												echo $range_to;
											?>
											</td>
											</tr>
											<?php } ?>

											<?php if($is_olsr_enabled): ?>
											<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("Subnet Mask");?></td>
											<td width="78%" class="vtable">
												<select name="netmask" class="formselect" id="netmask">
												<?php
												for ($i = 128; $i > 0; $i--) {
													if($i <> 127) {
														echo "<option value=\"{$i}\" ";
														if ($i == $pconfig['netmask']) echo "selected";
														echo ">" . $i . "</option>";
													}
												}
												?>
												</select>
											</td>
											</tr>
											<?php endif; ?>
											<tr>
											<td width="22%" valign="top" class="vncellreq"><?=gettext("Range");?></td>
											<td width="78%" class="vtable">
												<input name="range_from" type="text" class="formfld unknown" id="range_from" size="28" value="<?=htmlspecialchars($pconfig['range_from']);?>" />
												&nbsp;<?=gettext("to"); ?>&nbsp; <input name="range_to" type="text" class="formfld unknown" id="range_to" size="28" value="<?=htmlspecialchars($pconfig['range_to']);?>" />
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Prefix Delegation Range");?></td>
											<td width="78%" class="vtable">
												<input name="prefixrange_from" type="text" class="formfld unknown" id="prefixrange_from" size="28" value="<?=htmlspecialchars($pconfig['prefixrange_from']);?>" />
												&nbsp;<?=gettext("to"); ?>&nbsp; <input name="prefixrange_to" type="text" class="formfld unknown" id="prefixrange_to" size="28" value="<?=htmlspecialchars($pconfig['prefixrange_to']);?>" />
												&nbsp;<br /><?=gettext("Prefix Delegation Size"); ?>:&nbsp; <select name="prefixrange_length" class="formselect" id="prefixrange_length">
													<option value="48" <?php if($pconfig['prefixrange_length'] == 48) echo "selected=\"selected\""; ?>>48</option>
													<option value="52" <?php if($pconfig['prefixrange_length'] == 52) echo "selected=\"selected\""; ?>>52</option>
													<option value="56" <?php if($pconfig['prefixrange_length'] == 56) echo "selected=\"selected\""; ?>>56</option>
													<option value="60" <?php if($pconfig['prefixrange_length'] == 60) echo "selected=\"selected\""; ?>>60</option>
													<option value="62" <?php if($pconfig['prefixrange_length'] == 62) echo "selected=\"selected\""; ?>>62</option>
													<option value="63" <?php if($pconfig['prefixrange_length'] == 63) echo "selected=\"selected\""; ?>>63</option>
													<option value="64" <?php if($pconfig['prefixrange_length'] == 64) echo "selected=\"selected\""; ?>>64</option>
												</select> <br />
												<?php echo gettext("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."); ?>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("DNS servers");?></td>
											<td width="78%" class="vtable">
												<input name="dns1" type="text" class="formfld unknown" id="dns1" size="28" value="<?=htmlspecialchars($pconfig['dns1']);?>" /><br />
												<input name="dns2" type="text" class="formfld unknown" id="dns2" size="28" value="<?=htmlspecialchars($pconfig['dns2']);?>" /><br />
												<?=gettext("NOTE: leave blank to use the system default DNS servers - this interface's IP if DNS forwarder is enabled, otherwise the servers configured on the General page.");?>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Domain name");?></td>
											<td width="78%" class="vtable">
												<input name="domain" type="text" class="formfld unknown" id="domain" size="28" value="<?=htmlspecialchars($pconfig['domain']);?>" /><br />
												 <?=gettext("The default is to use the domain name of this system as the default domain name provided by DHCP. You may specify an alternate domain name here.");?>
											 </td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Domain search list");?></td>
											<td width="78%" class="vtable">
												<input name="domainsearchlist" type="text" class="formfld unknown" id="domainsearchlist" size="28" value="<?=htmlspecialchars($pconfig['domainsearchlist']);?>" /><br />
												<?=gettext("The DHCP server can optionally provide a domain search list. Use the semicolon character as separator");?>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Default lease time");?></td>
											<td width="78%" class="vtable">
												<input name="deftime" type="text" class="formfld unknown" id="deftime" size="10" value="<?=htmlspecialchars($pconfig['deftime']);?>" />
												<?=gettext("seconds");?><br />
												<?=gettext("This is used for clients that do not ask for a specific " .
												"expiration time."); ?><br />
												<?=gettext("The default is 7200 seconds.");?>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Maximum lease time");?></td>
											<td width="78%" class="vtable">
												<input name="maxtime" type="text" class="formfld unknown" id="maxtime" size="10" value="<?=htmlspecialchars($pconfig['maxtime']);?>" />
												<?=gettext("seconds");?><br />
												<?=gettext("This is the maximum lease time for clients that ask".
												" for a specific expiration time."); ?><br />
												<?=gettext("The default is 86400 seconds.");?>
											</td>
											</tr>
											<tr>
												<td width="22%" valign="top" class="vncell"><?=gettext("Time format change"); ?></td>
												<td width="78%" class="vtable">
												<table class="table table-striped" summary="time format change">
													<tr>
													<td>
														<input name="dhcpv6leaseinlocaltime" type="checkbox" id="dhcpv6leaseinlocaltime" value="yes" <?php if ($pconfig['dhcpv6leaseinlocaltime']) echo "checked=\"checked\""; ?> />
													</td>
													<td>
														<strong>
															<?=gettext("Change DHCPv6 display lease time from UTC to local time."); ?>
														</strong>
													</td>
													</tr>
													<tr>
													<td>&nbsp;</td>
													<td>
														<span class="red"><strong><?=gettext("Note:");?></strong></span> <?=gettext("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."); ?>

													</td>
													</tr>
												</table>
												</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Dynamic DNS");?></td>
											<td width="78%" class="vtable">
												<div id="showddnsbox">
													<input type="button" onclick="show_ddns_config()" value="<?=gettext("Advanced");?>" class="btn btn-xs btn-default"/> - <?=gettext("Show Dynamic DNS");?>
												</div>
												<div id="showddns" style="display:none">
													<input style="vertical-align:middle" type="checkbox" value="yes" name="ddnsupdate" id="ddnsupdate" <?php if($pconfig['ddnsupdate']) echo " checked=\"checked\""; ?> />&nbsp;
													<b><?=gettext("Enable registration of DHCP client names in DNS.");?></b><br />
													<p>
													<input name="ddnsdomain" type="text" class="formfld unknown" id="ddnsdomain" size="28" value="<?=htmlspecialchars($pconfig['ddnsdomain']);?>" /><br />
													<?=gettext("Note: Leave blank to disable dynamic DNS registration.");?><br />
													<?=gettext("Enter the dynamic DNS domain which will be used to register client names in the DNS server.");?>
													<input name="ddnsdomainprimary" type="text" class="formfld unknown" id="ddnsdomainprimary" size="20" value="<?=htmlspecialchars($pconfig['ddnsdomainprimary']);?>" /><br />
													<?=gettext("Enter the primary domain name server IP address for the dynamic domain name.");?><br />
													<input name="ddnsdomainkeyname" type="text" class="formfld unknown" id="ddnsdomainkeyname" size="20" value="<?=htmlspecialchars($pconfig['ddnsdomainkeyname']);?>" /><br />
													<?=gettext("Enter the dynamic DNS domain key name which will be used to register client names in the DNS server.");?>
													<input name="ddnsdomainkey" type="text" class="formfld unknown" id="ddnsdomainkey" size="20" value="<?=htmlspecialchars($pconfig['ddnsdomainkey']);?>" /><br />
													<?=gettext("Enter the dynamic DNS domain key secret which will be used to register client names in the DNS server.");?>
													</p>
												</div>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("NTP servers");?></td>
											<td width="78%" class="vtable">
												<div id="showntpbox">
													<input type="button" onclick="show_ntp_config()" value="<?=gettext("Advanced");?>" class="btn btn-xs btn-default"/> - <?=gettext("Show NTP configuration");?>
												</div>
												<div id="showntp" style="display:none">
													<input name="ntp1" type="text" class="formfld unknown" id="ntp1" size="28" value="<?=htmlspecialchars($pconfig['ntp1']);?>" /><br />
													<input name="ntp2" type="text" class="formfld unknown" id="ntp2" size="28" value="<?=htmlspecialchars($pconfig['ntp2']);?>" />
												</div>
											</td>
											</tr>
											<!-- ISC dhcpd does not support tftp for ipv6 yet. See redmine #2016
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("TFTP server");?></td>
											<td width="78%" class="vtable">
											<div id="showtftpbox">
												<input type="button" onclick="show_tftp_config()" value="<?=gettext("Advanced");?>" /> - <?=gettext("Show TFTP configuration");?>
											</div>
											<div id="showtftp" style="display:none">
												<input name="tftp" type="text" class="formfld unknown" id="tftp" size="50" value="<?=htmlspecialchars($pconfig['tftp']);?>" /><br />
												<?=gettext("Leave blank to disable.  Enter a full hostname or IP for the TFTP server.");?>
											</div>
											</td>
											</tr>
											-->
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("LDAP URI");?></td>
											<td width="78%" class="vtable">
												<div id="showldapbox">
													<input type="button" onclick="show_ldap_config()" value="<?=gettext("Advanced");?>" class="btn btn-xs btn-default"/> - <?=gettext("Show LDAP configuration");?>
												</div>
												<div id="showldap" style="display:none">
													<input name="ldap" type="text" class="formfld unknown" id="ldap" size="80" value="<?=htmlspecialchars($pconfig['ldap']);?>" /><br />
													<?=gettext("Leave blank to disable.  Enter a full URI for the LDAP server in the form ldap://ldap.example.com/dc=example,dc=com");?>
												</div>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Enable network booting");?></td>
											<td width="78%" class="vtable">
												<div id="shownetbootbox">
													<input type="button" onclick="show_netboot_config()" value="<?=gettext("Advanced");?>" class="btn btn-xs btn-default"/> - <?=gettext("Show Network booting");?>
												</div>
												<div id="shownetboot" style="display:none">
													<input style="vertical-align:middle" type="checkbox" value="yes" name="netboot" id="netboot" <?php if($pconfig['netboot']) echo " checked=\"checked\""; ?> />&nbsp;
													<b><?=gettext("Enables network booting.");?></b>
													<br/>
													<?=gettext("Enter the Bootfile URL");?>
													<input name="bootfile_url" type="text" class="formfld unknown" id="bootfile_url" size="28" value="<?=htmlspecialchars($pconfig['bootfile_url']);?>" />
												</div>
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top" class="vncell"><?=gettext("Additional BOOTP/DHCP Options");?></td>
											<td width="78%" class="vtable">
												<div id="shownumbervaluebox">
													<input type="button" onclick="show_shownumbervalue()" value="<?=gettext("Advanced");?>" class="btn btn-xs btn-default"/> - <?=gettext("Show Additional BOOTP/DHCP Options");?>
												</div>
												<div id="shownumbervalue" style="display:none">
												<table class="table table-striped" id="maintable" summary="bootp-dhcp options">
												<tbody>
												<tr>
												<td colspan="3">
													<div style="padding:5px; margin-top: 16px; margin-bottom: 16px; border:1px dashed #000066; background-color: #ffffff; color: #000000; font-size: 8pt;" id="itemhelp">
													<?=gettext("Enter the DHCP option number and the value for each item you would like to include in the DHCP lease information.  For a list of available options please visit this"); ?> <a href="http://www.iana.org/assignments/bootp-dhcp-parameters/" target="_blank"><?=gettext("URL"); ?></a>
													</div>
												</td>
												</tr>
												<tr>
												<td><div id="onecolumn"><?=gettext("Number");?></div></td>
												<td><div id="twocolumn"><?=gettext("Value");?></div></td>
												</tr>
												<?php $counter = 0; ?>
												<?php
													if($pconfig['numberoptions'])
														foreach($pconfig['numberoptions']['item'] as $item):
												?>
													<?php
														$number = $item['number'];
														$value = $item['value'];
													?>
												<tr>
												<td>
													<input autocomplete="off" name="number<?php echo $counter; ?>" type="text" class="formfld" id="number<?php echo $counter; ?>" size="10" value="<?=htmlspecialchars($number);?>" />
												</td>
												<td>
													<input autocomplete="off" name="value<?php echo $counter; ?>" type="text" class="formfld" id="value<?php echo $counter; ?>" size="55" value="<?=htmlspecialchars($value);?>" />
												</td>
												<td>
													<butto onclick="removeRow(this); return false;" value="<?=gettext("Delete");?>" ><span class="glyphicon glyphicon-remove"></span></button>
												</td>
												</tr>
												<?php $counter++; ?>
												<?php endforeach; ?>
												</tbody>
												</table>
												<a onclick="javascript:addRowTo('maintable', 'formfldalias'); return false;" href="#" alt="" title="<?=gettext("add another entry");?>">
													<span class="glyphicon glyphicon-plus" ></span>
												</a>
												<script type="text/javascript">
												//<![CDATA[
													field_counter_js = 2;
													rows = 1;
													totalrows = <?php echo $counter; ?>;
													loaded = <?php echo $counter; ?>;
												//]]>
												</script>
												</div>

												</td>
											</tr>
											<tr>
											<td width="22%" valign="top">&nbsp;</td>
											<td width="78%">
												<input name="if" type="hidden" value="<?=$if;?>" />
												<input name="Submit" type="submit" class="formbtn btn btn-primary" value="<?=gettext("Save");?>" onclick="enable_change(true)" />
											</td>
											</tr>
											<tr>
											<td width="22%" valign="top">&nbsp;</td>
											<td width="78%"> <p><span class="vexpl"><span class="red"><strong><?=gettext("Note:");?><br />
												</strong></span><?=gettext("The DNS servers entered in"); ?> <a href="system_general.php"><?=gettext("System: " .
												"General setup"); ?></a> <?=gettext("(or the"); ?> <a href="services_dnsmasq.php"><?=gettext("DNS " .
												"forwarder"); ?></a>, <?=gettext("if enabled)"); ?> </span><span class="vexpl"><?=gettext("will " .
												"be assigned to clients by the DHCP server."); ?><br />
												<br />
												<?=gettext("The DHCP lease table can be viewed on the"); ?> <a href="status_dhcpv6_leases.php"><?=gettext("Status: " .
												"DHCPv6 leases"); ?></a> <?=gettext("page."); ?><br />
												</span></p>
											</td>
											</tr>
										</table>
						    </div>
						    <div class="table-responsive">
							    <table class="tabcont table table-striped" width="100%" border="0" cellpadding="0" cellspacing="0" summary="static mappings">
										<tr>
											<td colspan="4" valign="top" class="listtopic"><?=gettext("DHCPv6 Static Mappings for this interface.");?></td>
											<td>&nbsp;</td>
										</tr>
										<tr>
											<td width="25%" class="listhdrr"><?=gettext("DUID");?></td>
											<td width="15%" class="listhdrr"><?=gettext("IPv6 address");?></td>
											<td width="20%" class="listhdrr"><?=gettext("Hostname");?></td>
											<td width="30%" class="listhdr"><?=gettext("Description");?></td>
											<td width="10%" class="list">
											<table border="0" cellspacing="0" cellpadding="1" summary="add">
											<tr>
											<td valign="middle" width="17"></td>
											<td valign="middle"><a href="services_dhcpv6_edit.php?if=<?=$if;?>" alt="add"><span class="glyphicon glyphicon-plus" ></span></a></td>
											</tr>
											</table>
											</td>
										</tr>
											<?php if(is_array($a_maps)): ?>
											<?php $i = 0; foreach ($a_maps as $mapent): ?>
											<?php if($mapent['duid'] <> "" or $mapent['ipaddrv6'] <> ""): ?>
										<tr>
										<td class="listlr" ondblclick="document.location='services_dhcpv6_edit.php?if=<?=$if;?>&amp;id=<?=$i;?>';">
											<?=htmlspecialchars($mapent['duid']);?>
										</td>
										<td class="listr" ondblclick="document.location='services_dhcpv6_edit.php?if=<?=$if;?>&amp;id=<?=$i;?>';">
											<?=htmlspecialchars($mapent['ipaddrv6']);?>&nbsp;
										</td>
										<td class="listr" ondblclick="document.location='services_dhcpv6_edit.php?if=<?=$if;?>&amp;id=<?=$i;?>';">
											<?=htmlspecialchars($mapent['hostname']);?>&nbsp;
										</td>
										<td class="listbg" ondblclick="document.location='services_dhcpv6_edit.php?if=<?=$if;?>&amp;id=<?=$i;?>';">
											<?=htmlspecialchars($mapent['descr']);?>&nbsp;
										</td>
										<td valign="middle" class="list nowrap">
											<table border="0" cellspacing="0" cellpadding="1" summary="icons">
											<tr>
											<td valign="middle"><a href="services_dhcpv6_edit.php?if=<?=$if;?>&amp;id=<?=$i;?>" alt="edit"><span class="glyphicon glyphicon-pencil"></span></a></td>
											<td valign="middle"><a href="services_dhcpv6.php?if=<?=$if;?>&amp;act=del&amp;id=<?=$i;?>" onclick="return confirm('<?=gettext("Do you really want to delete this mapping?");?>')" alt="delete"><span class="glyphicon glyphicon-remove"></span></a></td>
											</tr>
											</table>
										</td>
										</tr>
										<?php endif; ?>
										<?php $i++; endforeach; ?>
										<?php endif; ?>
										<tr>
										<td class="list" colspan="4"></td>
										<td class="list">
											<table border="0" cellspacing="0" cellpadding="1" summary="add">
											<tr>
											<td valign="middle" width="17"></td>
											<td valign="middle"><a href="services_dhcpv6_edit.php?if=<?=$if;?>" alt="add"><span class="glyphicon glyphicon-plus" ></span></a></td>
											</tr>
											</table>
										</td>
										</tr>
										</table>
									</div>
					    <? endif; ?>
                        </form>
				</div>
			    </section>

			</div>
			</div>
			</section>
<script type="text/javascript">
//<![CDATA[
enable_change(false);
//]]>
</script>
<?php include("foot.inc"); ?>
