<?php
/*
 * services_ntpd_acls.php
 *
 * part of pfSense (https://www.pfsense.org)
 * Copyright (c) 2004-2016 Electric Sheep Fencing, LLC
 * Copyright (c) 2013 Dagorlad
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

##|+PRIV
##|*IDENT=page-services-ntpd-acls
##|*NAME=Services: NTP ACL Settings
##|*DESCR=Allow access to the 'Services: NTP ACL Settings' page.
##|*MATCH=services_ntpd_acls.php*
##|-PRIV

define('NUMACLS', 50); // The maximum number of configurable ACLs
require_once("guiconfig.inc");
require_once('rrd.inc');
require_once("shaper.inc");

if (!is_array($config['ntpd'])) {
	$config['ntpd'] = array();
}
if (is_array($config['ntpd']['restrictions']) && is_array($config['ntpd']['restrictions']['row'])) {
	$networkacl = $config['ntpd']['restrictions']['row'];
} else {
	$networkacl = array('0' => array('acl_network' => '', 'mask' => ''));
}

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

	for ($x = 0; $x < NUMACLS; $x++) {
		if (isset($pconfig["acl_network{$x}"])) {
			$networkacl[$x] = array();
			$networkacl[$x]['acl_network'] = $pconfig["acl_network{$x}"];
			$networkacl[$x]['mask'] = $pconfig["mask{$x}"];

			/* ACL Flags */
			if (!empty($pconfig["kod{$x}"])) {
				$networkacl[$x]['kod'] = $pconfig["kod{$x}"];
			} elseif (isset($networkacl[$x]['kod'])) {
				unset($networkacl[$x]['kod']);
			}
			if (!empty($pconfig["nomodify{$x}"])) {
				$networkacl[$x]['nomodify'] = $pconfig["nomodify{$x}"];
			} elseif (isset($networkacl[$x]['nomodify'])) {
				unset($networkacl[$x]['nomodify']);
			}
			if (!empty($pconfig["noquery{$x}"])) {
				$networkacl[$x]['noquery'] = $pconfig["noquery{$x}"];
			} elseif (isset($networkacl[$x]['noquery'])) {
				unset($networkacl[$x]['noquery']);
			}
			if (!empty($pconfig["noserve{$x}"])) {
				$networkacl[$x]['noserve'] = $pconfig["noserve{$x}"];
			} elseif (isset($networkacl[$x]['noserve'])) {
				unset($networkacl[$x]['noserve']);
			}
			if (!empty($pconfig["nopeer{$x}"])) {
				$networkacl[$x]['nopeer'] = $pconfig["nopeer{$x}"];
			} elseif (isset($networkacl[$x]['nopeer'])) {
				unset($networkacl[$x]['nopeer']);
			}
			if (!empty($pconfig["notrap{$x}"])) {
				$networkacl[$x]['notrap'] = $pconfig["notrap{$x}"];
			} elseif (isset($networkacl[$x]['notrap'])) {
				unset($networkacl[$x]['notrap']);
			}
			/* End ACL Flags */

			if (!is_ipaddr($networkacl[$x]['acl_network'])) {
				$input_errors[] = gettext("A valid IP address must be entered for each row under Networks.");
			}
			if (is_ipaddr($networkacl[$x]['acl_network'])) {
				if (!is_subnet($networkacl[$x]['acl_network']."/".$networkacl[$x]['mask'])) {
					$input_errors[] = gettext("A valid IPv4 netmask must be entered for each IPv4 row under Networks.");
				}
			} else if (function_exists("is_ipaddrv6")) {
				if (!is_ipaddrv6($networkacl[$x]['acl_network'])) {
					$input_errors[] = gettext("A valid IPv6 address must be entered for {$networkacl[$x]['acl_network']}.");
				} else if (!is_subnetv6($networkacl[$x]['acl_network']."/".$networkacl[$x]['mask'])) {
					$input_errors[] = gettext("A valid IPv6 netmask must be entered for each IPv6 row under Networks.");
				}
			} else {
				$input_errors[] = gettext("A valid IP address must be entered for each row under Networks.");
			}
		} else if (isset($networkacl[$x])) {
			unset($networkacl[$x]);
		}
	}

	if (!$input_errors) {
		/* Default Access Restrictions */
		if (empty($_POST['kod'])) {
			$config['ntpd']['kod'] = 'on';
		} elseif (isset($config['ntpd']['kod'])) {
			unset($config['ntpd']['kod']);
		}

		if (empty($_POST['nomodify'])) {
			$config['ntpd']['nomodify'] = 'on';
		} elseif (isset($config['ntpd']['nomodify'])) {
			unset($config['ntpd']['nomodify']);
		}

		if (!empty($_POST['noquery'])) {
			$config['ntpd']['noquery'] = $_POST['noquery'];
		} elseif (isset($config['ntpd']['noquery'])) {
			unset($config['ntpd']['noquery']);
		}

		if (!empty($_POST['noserve'])) {
			$config['ntpd']['noserve'] = $_POST['noserve'];
		} elseif (isset($config['ntpd']['noserve'])) {
			unset($config['ntpd']['noserve']);
		}

		if (empty($_POST['nopeer'])) {
			$config['ntpd']['nopeer'] = 'on';
		} elseif (isset($config['ntpd']['nopeer'])) {
			unset($config['ntpd']['nopeer']);
		}

		if (empty($_POST['notrap'])) {
			$config['ntpd']['notrap'] = 'on';
		} elseif (isset($config['ntpd']['notrap'])) {
			unset($config['ntpd']['notrap']);
		}
		/* End Default Access Restrictions */
		$config['ntpd']['restrictions']['row'] = array();
		foreach ($networkacl as $acl) {
			$config['ntpd']['restrictions']['row'][] = $acl;
		}

		write_config("Updated NTP ACL Settings");

		$retval = 0;
		$retval = system_ntp_configure();
		$savemsg = get_std_save_message($retval);
	}
}

$pconfig = &$config['ntpd'];

$pgtitle = array(gettext("Services"), gettext("NTP"), gettext("ACLs"));
$shortcut_section = "ntp";
include("head.inc");

if ($input_errors) {
	print_input_errors($input_errors);
}
if ($savemsg) {
	print_info_box($savemsg, 'success');
}

$tab_array = array();
$tab_array[] = array(gettext("Settings"), false, "services_ntpd.php");
$tab_array[] = array(gettext("ACLs"), true, "services_ntpd_acls.php");
$tab_array[] = array(gettext("Serial GPS"), false, "services_ntpd_gps.php");
$tab_array[] = array(gettext("PPS"), false, "services_ntpd_pps.php");
display_top_tabs($tab_array);

$form = new Form;

$section = new Form_Section('Default Access Restrictions');

$section->addInput(new Form_Checkbox(
	'kod',
	'Kiss-o\'-death',
	'Enable KOD packets.',
	!$pconfig['kod']
));

$section->addInput(new Form_Checkbox(
	'nomodify',
	"Modifications",
	'Deny run-time Configuration (nomodify) by ntpq and ntpdc.',
	!$pconfig['nomodify']
));

$section->addInput(new Form_Checkbox(
	'noquery',
	'Queries',
	'Disable ntpq and ntpdc queries (noquery).',
	$pconfig['noquery']
));

$section->addInput(new Form_Checkbox(
	'noserve',
	'Service',
	'Disable all except ntpq and ntpdc queries (noserve).',
	$pconfig['noserve']
));

$section->addInput(new Form_Checkbox(
	'nopeer',
	'Peer Association',
	'Deny packets that attempt a peer association (nopeer).',
	!$pconfig['nopeer']
));

$section->addInput(new Form_Checkbox(
	'notrap',
	'Trap Service',
	'Deny mode 6 control message trap service (notrap).',
	!$pconfig['notrap']
));

/* End Default Restrictions*/
$form->add($section);

$section = new Form_Section('Custom Access Restrictions');

$numrows = count($networkacl) - 1;
$counter = 0;

foreach ($networkacl as $item) {
	$group = new Form_Group($counter == 0 ? 'Networks':'');

	$group->add(new Form_IpAddress(
		'acl_network' . $counter,
		null,
		$item['acl_network']
	))->addMask('mask' . $counter, $item['mask'])->setWidth(3)->setHelp(($counter == $numrows) ? 'Network/mask':null);

	$group->add(new Form_Checkbox(
		'kod' . $counter,
		null,
		null,
		$item['kod']
	))->setHelp('KOD');
	
	$group->add(new Form_Checkbox(
		'nomodify' . $counter,
		null,
		null,
		$item['nomodify']
	))->setHelp('nomodify');
	
	$group->add(new Form_Checkbox(
		'noquery' . $counter,
		null,
		null,
		$item['noquery']
	))->setHelp('noquery');
	
	$group->add(new Form_Checkbox(
		'noserve' . $counter,
		null,
		null,
		$item['noserve']
	))->setHelp('noserve');
	
	$group->add(new Form_Checkbox(
		'nopeer' . $counter,
		null,
		null,
		$item['nopeer']
	))->setHelp('nopeer');
	
	$group->add(new Form_Checkbox(
		'notrap' . $counter,
		null,
		null,
		$item['notrap']
	))->setHelp('notrap');

	$group->add(new Form_Button(
		'deleterow' . $counter,
		'Delete',
		null,
		'fa-trash'
	))->addClass('btn-warning');

	$group->addClass('repeatable');
	$section->add($group);

	$counter++;
}

$section->addInput(new Form_Button(
	'addrow',
	'Add',
	null,
	'fa-plus'
))->addClass('btn-success');

$form->add($section);

print($form);

?>

<script type="text/javascript">
//<![CDATA[
	// If this variable is declared, any help text will not be deleted when rows are added
	// IOW the help text will appear on every row
	retainhelp = true;
</script>

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