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Copyright (C) 2004 Scott Ullrich All rights reserved. originally part of m0n0wall (http://m0n0.ch/wall) Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>. All rights reserved.
314 lines
12 KiB
PHP
Executable File
314 lines
12 KiB
PHP
Executable File
#!/usr/local/bin/php
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<?php
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/*
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firewall_nat_out_edit.php
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Copyright (C) 2004 Scott Ullrich
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All rights reserved.
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originally 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($config['nat']['advancedoutbound']['rule']))
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$config['nat']['advancedoutbound']['rule'] = array();
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$a_out = &$config['nat']['advancedoutbound']['rule'];
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nat_out_rules_sort();
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$id = $_GET['id'];
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if (isset($_POST['id']))
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$id = $_POST['id'];
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function network_to_pconfig($adr, &$padr, &$pmask, &$pnot) {
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if (isset($adr['any']))
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$padr = "any";
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else if ($adr['network']) {
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list($padr, $pmask) = explode("/", $adr['network']);
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if (!$pmask)
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$pmask = 32;
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}
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if (isset($adr['not']))
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$pnot = 1;
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else
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$pnot = 0;
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}
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if (isset($id) && $a_out[$id]) {
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list($pconfig['source'],$pconfig['source_subnet']) = explode('/', $a_out[$id]['source']['network']);
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network_to_pconfig($a_out[$id]['destination'], $pconfig['destination'],
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$pconfig['destination_subnet'], $pconfig['destination_not']);
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$pconfig['target'] = $a_out[$id]['target'];
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$pconfig['interface'] = $a_out[$id]['interface'];
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if (!$pconfig['interface'])
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$pconfig['interface'] = "wan";
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$pconfig['descr'] = $a_out[$id]['descr'];
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} else {
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$pconfig['source_subnet'] = 24;
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$pconfig['destination'] = "any";
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$pconfig['destination_subnet'] = 24;
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$pconfig['interface'] = "wan";
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}
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if ($_POST) {
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if ($_POST['destination_type'] == "any") {
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$_POST['destination'] = "any";
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$_POST['destination_subnet'] = 24;
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}
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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 source source_subnet destination destination_subnet");
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$reqdfieldsn = explode(",", "Interface,Source,Source bit count,Destination,Destination bit count");
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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if ($_POST['source'] && !is_ipaddr($_POST['source'])) {
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$input_errors[] = "A valid source must be specified.";
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}
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if ($_POST['source_subnet'] && !is_numericint($_POST['source_subnet'])) {
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$input_errors[] = "A valid source bit count must be specified.";
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}
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if ($_POST['destination_type'] != "any") {
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if ($_POST['destination'] && !is_ipaddr($_POST['destination'])) {
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$input_errors[] = "A valid destination must be specified.";
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}
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if ($_POST['destination_subnet'] && !is_numericint($_POST['destination_subnet'])) {
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$input_errors[] = "A valid destination bit count must be specified.";
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}
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}
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if ($_POST['target'] && !is_ipaddr($_POST['target'])) {
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$input_errors[] = "A valid target IP address must be specified.";
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}
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/* check for existing entries */
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$osn = gen_subnet($_POST['source'], $_POST['source_subnet']) . "/" . $_POST['source_subnet'];
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if ($_POST['destination_type'] == "any")
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$ext = "any";
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else
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$ext = gen_subnet($_POST['destination'], $_POST['destination_subnet']) . "/"
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. $_POST['destination_subnet'];
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if ($_POST['target']) {
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/* check for clashes with 1:1 NAT (Server NAT is OK) */
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if (is_array($config['nat']['onetoone'])) {
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foreach ($config['nat']['onetoone'] as $natent) {
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if (check_subnets_overlap($_POST['target'], 32, $natent['external'], $natent['subnet'])) {
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$input_errors[] = "A 1:1 NAT mapping overlaps with the specified target IP address.";
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break;
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}
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}
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}
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}
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foreach ($a_out as $natent) {
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if (isset($id) && ($a_out[$id]) && ($a_out[$id] === $natent))
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continue;
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if (!$natent['interface'])
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$natent['interface'] == "wan";
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if (($natent['interface'] == $_POST['interface']) && ($natent['source']['network'] == $osn)) {
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if (isset($natent['destination']['not']) == isset($_POST['destination_not'])) {
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if ((isset($natent['destination']['any']) && ($ext == "any")) ||
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($natent['destination']['network'] == $ext)) {
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$input_errors[] = "There is already an outbound NAT rule with the specified settings.";
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break;
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}
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}
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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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$natent['source']['network'] = $osn;
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$natent['descr'] = $_POST['descr'];
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$natent['target'] = $_POST['target'];
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$natent['interface'] = $_POST['interface'];
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if ($ext == "any")
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$natent['destination']['any'] = true;
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else
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$natent['destination']['network'] = $ext;
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if (isset($_POST['destination_not']) && $ext != "any")
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$natent['destination']['not'] = true;
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if (isset($id) && $a_out[$id])
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$a_out[$id] = $natent;
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else
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$a_out[] = $natent;
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touch($d_natconfdirty_path);
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write_config();
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header("Location: firewall_nat_out.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 outbound mapping");?></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 typesel_change() {
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switch (document.iform.destination_type.selectedIndex) {
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case 1: // network
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document.iform.destination.disabled = 0;
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document.iform.destination_subnet.disabled = 0;
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break;
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default:
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document.iform.destination.value = "";
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document.iform.destination.disabled = 1;
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document.iform.destination_subnet.value = "24";
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document.iform.destination_subnet.disabled = 1;
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break;
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}
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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 outbound mapping</p>
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<?php if ($input_errors) print_input_errors($input_errors); ?>
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<form action="firewall_nat_out_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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$interfaces = array('wan' => 'WAN');
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for ($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">Source</td>
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<td width="78%" class="vtable">
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<input name="source" type="text" class="formfld" id="source" size="20" value="<?=htmlspecialchars($pconfig['source']);?>">
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/
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<select name="source_subnet" class="formfld" id="source_subnet">
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<?php for ($i = 32; $i >= 0; $i--): ?>
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<option value="<?=$i;?>" <?php if ($i == $pconfig['source_subnet']) echo "selected"; ?>>
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<?=$i;?>
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</option>
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<?php endfor; ?>
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</select>
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<br>
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<span class="vexpl">Enter the source network for the outbound NAT mapping.</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Destination</td>
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<td width="78%" class="vtable">
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<input name="destination_not" type="checkbox" id="destination_not" value="yes" <?php if ($pconfig['destination_not']) echo "checked"; ?>>
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<strong>not</strong><br>
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Use this option to invert the sense of the match.<br>
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<br>
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<table border="0" cellspacing="0" cellpadding="0">
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<tr>
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<td>Type: </td>
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<td><select name="destination_type" class="formfld" onChange="typesel_change()">
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<option value="any" <?php if ($pconfig['destination'] == "any") echo "selected"; ?>>
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any</option>
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<option value="network" <?php if ($pconfig['destination'] != "any") echo "selected"; ?>>
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Network</option>
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</select></td>
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</tr>
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<tr>
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<td>Address: </td>
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<td><input name="destination" type="text" class="formfld" id="destination" size="20" value="<?=htmlspecialchars($pconfig['destination']);?>">
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/
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<select name="destination_subnet" class="formfld" id="destination_subnet">
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<?php for ($i = 32; $i >= 0; $i--): ?>
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<option value="<?=$i;?>" <?php if ($i == $pconfig['destination_subnet']) echo "selected"; ?>>
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<?=$i;?>
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</option>
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<?php endfor; ?>
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</select> </td>
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</tr>
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<tr>
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<td> </td>
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<td><span class="vexpl">Enter the destination network for
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the outbound NAT mapping.</span></td>
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</tr>
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</table></td>
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</tr>
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<tr>
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<td valign="top" class="vncell">Target</td>
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<td class="vtable">
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<input name="target" type="text" class="formfld" id="target" size="20" value="<?=htmlspecialchars($pconfig['target']);?>">
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<br>
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<span class="vexpl">Packets matching this rule will be mapped to the IP address given here. Leave blank to use the selected interface's IP address.</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell">Description</td>
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<td width="78%" class="vtable">
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<input name="descr" type="text" class="formfld" id="descr" size="40" value="<?=htmlspecialchars($pconfig['descr']);?>">
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<br> <span class="vexpl">You may enter a description here
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for your reference (not parsed).</span></td>
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</tr>
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<tr>
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<td width="22%" valign="top"> </td>
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<td width="78%">
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<input name="Submit" type="submit" class="formbtn" value="Save">
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<?php if (isset($id) && $a_out[$id]): ?>
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<input name="id" type="hidden" value="<?=$id;?>">
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<?php endif; ?>
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</td>
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</tr>
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</table>
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</form>
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<script language="JavaScript">
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<!--
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typesel_change();
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//-->
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</script>
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<?php include("fend.inc"); ?>
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</body>
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</html>
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