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<?php
/* $Id$ */
/*
firewall_nat_server_edit.php
Copyright (C) 2004, 2005 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.
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("guiconfig.inc");
if (!is_array($config['nat']['servernat'])) {
$config['nat']['servernat'] = array();
}
nat_server_rules_sort();
$a_snat = &$config['nat']['servernat'];
$id = $_GET['id'];
if (isset($_POST['id']))
$id = $_POST['id'];
if (isset($id) && $a_snat[$id]) {
$pconfig['ipaddr'] = $a_snat[$id]['ipaddr'];
$pconfig['descr'] = $a_snat[$id]['descr'];
}
if ($_POST) {
unset($input_errors);
$pconfig = $_POST;
/* input validation */
$reqdfields = explode(" ", "ipaddr");
$reqdfieldsn = explode(",", "External IP address");
do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
if (($_POST['ipaddr'] && !is_ipaddr($_POST['ipaddr']))) {
$input_errors[] = "A valid external IP address must be specified.";
}
if ($_POST['ipaddr'] == $config['interfaces']['wan']['ipaddr'])
$input_errors[] = "The WAN IP address may not be used in a NAT Address entry.";
/* check for overlaps with other server NAT */
foreach ($a_snat as $natent) {
if (isset($id) && ($a_snat[$id]) && ($a_snat[$id] === $natent))
continue;
if ($_POST['ipaddr'] == $natent['ipaddr']) {
$input_errors[] = "There is already a server NAT entry for the specified external IP address.";
break;
}
}
/* check for overlaps with 1:1 NAT */
if (is_array($config['nat']['onetoone'])) {
foreach ($config['nat']['onetoone'] as $natent) {
if (check_subnets_overlap($_POST['ipaddr'], 32, $natent['external'], $natent['subnet'])) {
$input_errors[] = "A 1:1 NAT mapping overlaps with the specified external IP address.";
break;
}
}
}
if (!$input_errors) {
$natent = array();
$natent['ipaddr'] = $_POST['ipaddr'];
$natent['descr'] = $_POST['descr'];
if (isset($id) && $a_snat[$id]) {
/* modify all inbound NAT rules with this address */
for ($i = 0; isset($config['nat']['rule'][$i]); $i++) {
if ($config['nat']['rule'][$i]['external-address'] == $a_snat[$id]['ipaddr'])
$config['nat']['rule'][$i]['external-address'] = $natent['ipaddr'];
}
$a_snat[$id] = $natent;
} else
$a_snat[] = $natent;
touch($d_natconfdirty_path);
write_config();
header("Location: firewall_nat_server.php");
exit;
}
}
$pgtitle = "Firewall: NAT: NAT Addresses: Edit";
include("head.inc");
?>
<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
<?php include("fbegin.inc"); ?>
<p class="pgtitle"><?=$pgtitle?></p>
<?php if ($input_errors) print_input_errors($input_errors); ?>
<form action="firewall_nat_server_edit.php" method="post" name="iform" id="iform">
<table width="100%" border="0" cellpadding="6" cellspacing="0">
<tr>
<td width="22%" valign="top" class="vncellreq">External IP address</td>
<td width="78%" class="vtable">
<input name="ipaddr" type="text" class="formfld" id="ipaddr" size="20" value="<?=htmlspecialchars($pconfig['ipaddr']);?>">
</td>
</tr>
<tr>
<td width="22%" valign="top" class="vncell">Description</td>
<td width="78%" class="vtable">
<input name="descr" type="text" class="formfld" id="descr" size="40" value="<?=htmlspecialchars($pconfig['descr']);?>">
<br> <span class="vexpl">You may enter a description here
for your reference (not parsed).</span></td>
</tr>
<tr>
<td width="22%" valign="top"> </td>
<td width="78%">
<input name="Submit" type="submit" class="formbtn" value="Save"> <input type="button" class="formbtn" value="Cancel" onclick="history.back()">
<?php if (isset($id) && $a_snat[$id]): ?>
<input name="id" type="hidden" value="<?=$id;?>">
<?php endif; ?>
</td>
</tr>
</table>
</form>
<?php include("fend.inc"); ?>
</body>
</html>
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