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#!/usr/local/bin/php
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<?php
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/*
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firewall_nat_edit.php
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part of m0n0wall (http://m0n0.ch/wall)
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Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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require("guiconfig.inc");
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if (!is_array($config['nat']['rule'])) {
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$config['nat']['rule'] = array();
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}
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nat_rules_sort();
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$a_nat = &$config['nat']['rule'];
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$id = $_GET['id'];
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if (isset($_POST['id']))
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$id = $_POST['id'];
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if (isset($id) && $a_nat[$id]) {
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$pconfig['extaddr'] = $a_nat[$id]['external-address'];
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$pconfig['proto'] = $a_nat[$id]['protocol'];
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list($pconfig['beginport'],$pconfig['endport']) = explode("-", $a_nat[$id]['external-port']);
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$pconfig['localip'] = $a_nat[$id]['target'];
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$pconfig['localbeginport'] = $a_nat[$id]['local-port'];
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$pconfig['descr'] = $a_nat[$id]['descr'];
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$pconfig['interface'] = $a_nat[$id]['interface'];
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if (!$pconfig['interface'])
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$pconfig['interface'] = "wan";
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} else {
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$pconfig['interface'] = "wan";
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}
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if ($_POST) {
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if ($_POST['beginport_cust'] && !$_POST['beginport'])
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$_POST['beginport'] = $_POST['beginport_cust'];
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if ($_POST['endport_cust'] && !$_POST['endport'])
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$_POST['endport'] = $_POST['endport_cust'];
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if ($_POST['localbeginport_cust'] && !$_POST['localbeginport'])
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$_POST['localbeginport'] = $_POST['localbeginport_cust'];
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if (!$_POST['endport'])
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$_POST['endport'] = $_POST['beginport'];
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unset($input_errors);
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$pconfig = $_POST;
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/* input validation */
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$reqdfields = explode(" ", "interface proto beginport localip localbeginport");
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$reqdfieldsn = explode(",", "Interface,Protocol,Start port,NAT IP,Local port");
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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if (($_POST['beginport'] && !is_port($_POST['beginport']))) {
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$input_errors[] = "The start port must be an integer between 1 and 65535.";
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}
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if (($_POST['endport'] && !is_port($_POST['endport']))) {
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$input_errors[] = "The end port must be an integer between 1 and 65535.";
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}
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if (($_POST['localbeginport'] && !is_port($_POST['localbeginport']))) {
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$input_errors[] = "The local port must be an integer between 1 and 65535.";
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}
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if (($_POST['localip'] && !is_ipaddroralias($_POST['localip']))) {
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$input_errors[] = "A valid NAT IP address or host alias must be specified.";
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}
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if ($_POST['beginport'] > $_POST['endport']) {
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/* swap */
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$tmp = $_POST['endport'];
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$_POST['endport'] = $_POST['beginport'];
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$_POST['beginport'] = $tmp;
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}
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if (!$input_errors) {
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if (($_POST['endport'] - $_POST['beginport'] + $_POST['localbeginport']) > 65535)
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$input_errors[] = "The target port range must lie between 1 and 65535.";
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}
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/* check for overlaps */
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foreach ($a_nat as $natent) {
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if (isset($id) && ($a_nat[$id]) && ($a_nat[$id] === $natent))
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continue;
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if ($natent['interface'] != $_POST['interface'])
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continue;
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if ($natent['external-address'] != $_POST['extaddr'])
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continue;
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list($begp,$endp) = explode("-", $natent['external-port']);
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if (!$endp)
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$endp = $begp;
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if (!( (($_POST['beginport'] < $begp) && ($_POST['endport'] < $begp))
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|| (($_POST['beginport'] > $endp) && ($_POST['endport'] > $endp)))) {
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$input_errors[] = "The external port range overlaps with an existing entry.";
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break;
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}
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}
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if (!$input_errors) {
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$natent = array();
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if ($_POST['extaddr'])
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$natent['external-address'] = $_POST['extaddr'];
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$natent['protocol'] = $_POST['proto'];
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if ($_POST['beginport'] == $_POST['endport'])
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$natent['external-port'] = $_POST['beginport'];
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else
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$natent['external-port'] = $_POST['beginport'] . "-" . $_POST['endport'];
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$natent['target'] = $_POST['localip'];
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$natent['local-port'] = $_POST['localbeginport'];
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$natent['interface'] = $_POST['interface'];
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$natent['descr'] = $_POST['descr'];
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if (isset($id) && $a_nat[$id])
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$a_nat[$id] = $natent;
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else
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$a_nat[] = $natent;
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touch($d_natconfdirty_path);
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if ($_POST['autoadd']) {
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/* auto-generate a matching firewall rule */
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$filterent = array();
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$filterent['interface'] = $_POST['interface'];
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$filterent['protocol'] = $_POST['proto'];
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$filterent['source']['any'] = "";
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$filterent['destination']['address'] = $_POST['localip'];
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$dstpfrom = $_POST['localbeginport'];
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$dstpto = $dstpfrom + $_POST['endport'] - $_POST['beginport'];
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if ($dstpfrom == $dstpto)
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$filterent['destination']['port'] = $dstpfrom;
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else
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$filterent['destination']['port'] = $dstpfrom . "-" . $dstpto;
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$filterent['descr'] = "NAT " . $_POST['descr'];
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$config['filter']['rule'][] = $filterent;
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touch($d_filterconfdirty_path);
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}
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write_config();
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header("Location: firewall_nat.php");
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exit;
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}
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}
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?>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title><?=gentitle("Firewall: NAT: Edit inbound");?></title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="gui.css" rel="stylesheet" type="text/css">
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<script language="JavaScript">
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<!--
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function ext_change() {
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if (document.iform.beginport.selectedIndex == 0) {
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document.iform.beginport_cust.disabled = 0;
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} else {
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document.iform.beginport_cust.value = "";
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document.iform.beginport_cust.disabled = 1;
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}
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if (document.iform.endport.selectedIndex == 0) {
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document.iform.endport_cust.disabled = 0;
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} else {
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document.iform.endport_cust.value = "";
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document.iform.endport_cust.disabled = 1;
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}
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if (document.iform.localbeginport.selectedIndex == 0) {
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document.iform.localbeginport_cust.disabled = 0;
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} else {
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document.iform.localbeginport_cust.value = "";
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document.iform.localbeginport_cust.disabled = 1;
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}
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}
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function ext_rep_change() {
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document.iform.endport.selectedIndex = document.iform.beginport.selectedIndex;
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document.iform.localbeginport.selectedIndex = document.iform.beginport.selectedIndex;
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}
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//-->
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</script>
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</head>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<p class="pgtitle">Firewall: NAT: Edit inbound</p>
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<?php if ($input_errors) print_input_errors($input_errors); ?>
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<form action="firewall_nat_edit.php" method="post" name="iform" id="iform">
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<table width="100%" border="0" cellpadding="6" cellspacing="0">
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<tr>
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<td width="22%" valign="top" class="vncellreq">Interface</td>
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<td width="78%" class="vtable">
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<select name="interface" class="formfld">
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<?php
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$interfaces = array('wan' => 'WAN', 'lan' => 'LAN');
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for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
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$interfaces['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
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}
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foreach ($interfaces as $iface => $ifacename): ?>
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<option value="<?=$iface;?>" <?php if ($iface == $pconfig['interface']) echo "selected"; ?>>
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<?=htmlspecialchars($ifacename);?>
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</option>
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<?php endforeach; ?>
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</select><br>
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<span class="vexpl">Choose which interface this rule applies to.<br>
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Hint: in most cases, you'll want to use WAN here.</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">External address</td>
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<td width="78%" class="vtable">
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<select name="extaddr" class="formfld">
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<option value="" <?php if (!$pconfig['extaddr']) echo "selected"; ?>>Interface address</option>
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<?php
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if (is_array($config['nat']['servernat'])):
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foreach ($config['nat']['servernat'] as $sn): ?>
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<option value="<?=$sn['ipaddr'];?>" <?php if ($sn['ipaddr'] == $pconfig['extaddr']) echo "selected"; ?>><?=htmlspecialchars("{$sn['ipaddr']} ({$sn['descr']})");?></option>
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<?php endforeach; endif; ?>
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</select><br>
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<span class="vexpl">
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If you want this rule to apply to another IP address than the IP address of the interface chosen above,
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select it here (you need to define IP addresses on the
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<a href="firewall_nat_server.php">Server NAT</a> page first).</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Protocol</td>
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<td width="78%" class="vtable">
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<select name="proto" class="formfld">
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<?php $protocols = explode(" ", "TCP UDP TCP/UDP"); foreach ($protocols as $proto): ?>
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<option value="<?=strtolower($proto);?>" <?php if (strtolower($proto) == $pconfig['proto']) echo "selected"; ?>><?=htmlspecialchars($proto);?></option>
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<?php endforeach; ?>
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</select> <br> <span class="vexpl">Choose which IP protocol
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this rule should match.<br>
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Hint: in most cases, you should specify <em>TCP</em> here.</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">External port
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range </td>
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<td width="78%" class="vtable">
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<table border="0" cellspacing="0" cellpadding="0">
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<tr>
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<td>from: </td>
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<td><select name="beginport" class="formfld" onChange="ext_rep_change();ext_change()">
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<option value="">(other)</option>
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<?php $bfound = 0; foreach ($wkports as $wkport => $wkportdesc): ?>
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<option value="<?=$wkport;?>" <?php if ($wkport == $pconfig['beginport']) {
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echo "selected";
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$bfound = 1;
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}?>>
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<?=htmlspecialchars($wkportdesc);?>
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</option>
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<?php endforeach; ?>
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</select> <input name="beginport_cust" type="text" size="5" value="<?php if (!$bfound) echo $pconfig['beginport']; ?>"></td>
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</tr>
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<tr>
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<td>to:</td>
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<td><select name="endport" class="formfld" onChange="ext_change()">
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<option value="">(other)</option>
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<?php $bfound = 0; foreach ($wkports as $wkport => $wkportdesc): ?>
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<option value="<?=$wkport;?>" <?php if ($wkport == $pconfig['endport']) {
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echo "selected";
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$bfound = 1;
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}?>>
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<?=htmlspecialchars($wkportdesc);?>
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</option>
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<?php endforeach; ?>
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</select> <input name="endport_cust" type="text" size="5" value="<?php if (!$bfound) echo $pconfig['endport']; ?>"></td>
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</tr>
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</table>
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<br> <span class="vexpl">Specify the port or port range on
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the firewall's external address for this mapping.<br>
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Hint: you can leave the <em>'to'</em> field empty if you only
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want to map a single port</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">NAT IP</td>
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<td width="78%" class="vtable">
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<input autocomplete='off' onblur='actb_removedisp()' onkeypress='return (event.keyCode!=13);' onkeydown='actb_checkkey(event, this)' onkeyup='actb_tocomplete(this,event,addressarray);' name="localip" type="text" class="formfldalias" id="localip" size="20" value="<?=htmlspecialchars($pconfig['localip']);?>">
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<br> <span class="vexpl">Enter the internal IP address of
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the server on which you want to map the ports.<br>
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e.g. <em>192.168.1.12</em></span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Local port</td>
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<td width="78%" class="vtable">
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<select name="localbeginport" class="formfld" onChange="ext_change()">
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<option value="">(other)</option>
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<?php $bfound = 0; foreach ($wkports as $wkport => $wkportdesc): ?>
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<option value="<?=$wkport;?>" <?php if ($wkport == $pconfig['localbeginport']) {
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echo "selected";
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$bfound = 1;
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}?>>
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<?=htmlspecialchars($wkportdesc);?>
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</option>
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<?php endforeach; ?>
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</select> <input name="localbeginport_cust" type="text" size="5" value="<?php if (!$bfound) echo $pconfig['localbeginport']; ?>">
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<br>
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<span class="vexpl">Specify the port on the machine with the
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IP address entered above. In case of a port range, specify
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329
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the beginning port of the range (the end port will be calculated
|
|
330
|
automatically).<br>
|
|
331
|
Hint: this is usually identical to the 'from' port above</span></td>
|
|
332
|
</tr>
|
|
333
|
<tr>
|
|
334
|
<td width="22%" valign="top" class="vncell">Description</td>
|
|
335
|
<td width="78%" class="vtable">
|
|
336
|
<input name="descr" type="text" class="formfld" id="descr" size="40" value="<?=htmlspecialchars($pconfig['descr']);?>">
|
|
337
|
<br> <span class="vexpl">You may enter a description here
|
|
338
|
for your reference (not parsed).</span></td>
|
|
339
|
</tr><?php if (!(isset($id) && $a_nat[$id])): ?>
|
|
340
|
<tr>
|
|
341
|
<td width="22%" valign="top"> </td>
|
|
342
|
<td width="78%">
|
|
343
|
<input name="autoadd" type="checkbox" id="autoadd" value="yes">
|
|
344
|
<strong>Auto-add a firewall rule to permit traffic through
|
|
345
|
this NAT rule</strong></td>
|
|
346
|
</tr><?php endif; ?>
|
|
347
|
<tr>
|
|
348
|
<td width="22%" valign="top"> </td>
|
|
349
|
<td width="78%">
|
|
350
|
<input name="Submit" type="submit" class="formbtn" value="Save">
|
|
351
|
<?php if (isset($id) && $a_nat[$id]): ?>
|
|
352
|
<input name="id" type="hidden" value="<?=$id;?>">
|
|
353
|
<?php endif; ?>
|
|
354
|
</td>
|
|
355
|
</tr>
|
|
356
|
</table>
|
|
357
|
</form>
|
|
358
|
<script language="JavaScript">
|
|
359
|
<!--
|
|
360
|
ext_change();
|
|
361
|
//-->
|
|
362
|
</script>
|
|
363
|
<?php
|
|
364
|
$isfirst = 0;
|
|
365
|
$aliases = "";
|
|
366
|
$addrisfirst = 0;
|
|
367
|
$aliasesaddr = "";
|
|
368
|
if($config['aliases']['alias'] <> "")
|
|
369
|
foreach($config['aliases']['alias'] as $alias_name) {
|
|
370
|
if(!stristr($alias_name['address'], ".")) {
|
|
371
|
if($isfirst == 1) $aliases .= ",";
|
|
372
|
$aliases .= "'" . $alias_name['name'] . "'";
|
|
373
|
$isfirst = 1;
|
|
374
|
} else {
|
|
375
|
if($addrisfirst == 1) $aliasesaddr .= ",";
|
|
376
|
$aliasesaddr .= "'" . $alias_name['name'] . "'";
|
|
377
|
$addrisfirst = 1;
|
|
378
|
}
|
|
379
|
}
|
|
380
|
?>
|
|
381
|
<script language="JavaScript">
|
|
382
|
<!--
|
|
383
|
var addressarray=new Array(<?php echo $aliasesaddr; ?>);
|
|
384
|
var customarray=new Array(<?php echo $aliases; ?>);
|
|
385
|
//-->
|
|
386
|
</script>
|
|
387
|
<script type="text/javascript" language="javascript" src="auto_complete_helper.js">
|
|
388
|
</script>
|
|
389
|
<?php include("fend.inc"); ?>
|
|
390
|
</body>
|
|
391
|
</html>
|