.
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.
*/
##|+PRIV
##|*IDENT=page-firewall-nat-portforward-edit
##|*NAME=Firewall: NAT: Port Forward: Edit page
##|*DESCR=Allow access to the 'Firewall: NAT: Port Forward: Edit' page.
##|*MATCH=firewall_nat_edit.php*
##|-PRIV
require("guiconfig.inc");
if (!is_array($config['nat']['rule'])) {
$config['nat']['rule'] = array();
}
//nat_rules_sort();
$a_nat = &$config['nat']['rule'];
$id = $_GET['id'];
if (isset($_POST['id']))
$id = $_POST['id'];
if (isset($_GET['dup'])) {
$id = $_GET['dup'];
$after = $_GET['dup'];
}
if (isset($id) && $a_nat[$id]) {
$pconfig['extaddr'] = $a_nat[$id]['external-address'];
$pconfig['proto'] = $a_nat[$id]['protocol'];
list($pconfig['beginport'],$pconfig['endport']) = explode("-", $a_nat[$id]['external-port']);
$pconfig['localip'] = $a_nat[$id]['target'];
$pconfig['localbeginport'] = $a_nat[$id]['local-port'];
$pconfig['descr'] = $a_nat[$id]['descr'];
$pconfig['interface'] = $a_nat[$id]['interface'];
$pconfig['nosync'] = isset($a_nat[$id]['nosync']);
if (!$pconfig['interface'])
$pconfig['interface'] = "wan";
} else {
$pconfig['interface'] = "wan";
}
if (isset($_GET['dup']))
unset($id);
/* run through $_POST items encoding HTML entties so that the user
* cannot think he is slick and perform a XSS attack on the unwilling
*/
foreach ($_POST as $key => $value) {
$temp = $value;
$newpost = htmlentities($temp);
if($newpost <> $temp)
$input_errors[] = "Invalid characters detected ($temp). Please remove invalid characters and save again.";
}
if ($_POST) {
if ($_POST['beginport_cust'] && !$_POST['beginport'])
$_POST['beginport'] = $_POST['beginport_cust'];
if ($_POST['endport_cust'] && !$_POST['endport'])
$_POST['endport'] = $_POST['endport_cust'];
if ($_POST['localbeginport_cust'] && !$_POST['localbeginport'])
$_POST['localbeginport'] = $_POST['localbeginport_cust'];
if (!$_POST['endport'])
$_POST['endport'] = $_POST['beginport'];
/* Make beginning port end port if not defined and endport is */
if (!$_POST['beginport'] && $_POST['endport'])
$_POST['beginport'] = $_POST['endport'];
unset($input_errors);
$pconfig = $_POST;
/* input validation */
if(strtoupper($_POST['proto']) == "TCP" or strtoupper($_POST['proto']) == "UDP" or strtoupper($_POST['proto']) == "TCP/UDP") {
$reqdfields = explode(" ", "interface proto beginport endport localip localbeginport");
$reqdfieldsn = explode(",", "Interface,Protocol,External port from,External port to,NAT IP,Local port");
} else {
$reqdfields = explode(" ", "interface proto localip");
$reqdfieldsn = explode(",", "Interface,Protocol,NAT IP");
}
do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
if (($_POST['localip'] && !is_ipaddroralias($_POST['localip']))) {
$input_errors[] = "\"{$_POST['localip']}\" is not valid NAT IP address or host alias.";
}
/* only validate the ports if the protocol is TCP, UDP or TCP/UDP */
if(strtoupper($_POST['proto']) == "TCP" or strtoupper($_POST['proto']) == "UDP" or strtoupper($_POST['proto']) == "TCP/UDP") {
if (($_POST['beginport'] && !is_ipaddroralias($_POST['beginport']) && !is_port($_POST['beginport']))) {
$input_errors[] = "The start port must be an integer between 1 and 65535.";
}
if (($_POST['endport'] && !is_ipaddroralias($_POST['endport']) && !is_port($_POST['endport']))) {
$input_errors[] = "The end port must be an integer between 1 and 65535.";
}
if (($_POST['localbeginport'] && !is_ipaddroralias($_POST['localbeginport']) && !is_port($_POST['localbeginport']))) {
$input_errors[] = "The local port must be an integer between 1 and 65535.";
}
if ($_POST['beginport'] > $_POST['endport']) {
/* swap */
$tmp = $_POST['endport'];
$_POST['endport'] = $_POST['beginport'];
$_POST['beginport'] = $tmp;
}
if (!$input_errors) {
if (($_POST['endport'] - $_POST['beginport'] + $_POST['localbeginport']) > 65535)
$input_errors[] = "The target port range must be an integer between 1 and 65535.";
}
}
/* check for overlaps */
foreach ($a_nat as $natent) {
if (isset($id) && ($a_nat[$id]) && ($a_nat[$id] === $natent))
continue;
if ($natent['interface'] != $_POST['interface'])
continue;
if ($natent['external-address'] != $_POST['extaddr'])
continue;
if (($natent['proto'] != $_POST['proto']) && ($natent['proto'] != "tcp/udp") && ($_POST['proto'] != "tcp/udp"))
continue;
list($begp,$endp) = explode("-", $natent['external-port']);
if (!$endp)
$endp = $begp;
if (!( (($_POST['beginport'] < $begp) && ($_POST['endport'] < $begp))
|| (($_POST['beginport'] > $endp) && ($_POST['endport'] > $endp)))) {
$input_errors[] = "The external port range overlaps with an existing entry.";
break;
}
}
if (!$input_errors) {
$natent = array();
if ($_POST['extaddr'])
$natent['external-address'] = $_POST['extaddr'];
$natent['protocol'] = $_POST['proto'];
if ($_POST['beginport'] == $_POST['endport'])
$natent['external-port'] = $_POST['beginport'];
else
$natent['external-port'] = $_POST['beginport'] . "-" . $_POST['endport'];
$natent['target'] = $_POST['localip'];
$natent['local-port'] = $_POST['localbeginport'];
$natent['interface'] = $_POST['interface'];
$natent['descr'] = $_POST['descr'];
if($_POST['nosync'] == "yes")
$natent['nosync'] = true;
else
unset($natent['nosync']);
if (isset($id) && $a_nat[$id])
$a_nat[$id] = $natent;
else {
if (is_numeric($after))
array_splice($a_nat, $after+1, 0, array($natent));
else
$a_nat[] = $natent;
}
touch($d_natconfdirty_path);
if ($_POST['autoadd']) {
/* auto-generate a matching firewall rule */
$filterent = array();
$filterent['interface'] = $_POST['interface'];
$filterent['protocol'] = $_POST['proto'];
$filterent['source']['any'] = "";
$filterent['destination']['address'] = $_POST['localip'];
$dstpfrom = $_POST['localbeginport'];
$dstpto = $dstpfrom + $_POST['endport'] - $_POST['beginport'];
if ($dstpfrom == $dstpto)
$filterent['destination']['port'] = $dstpfrom;
else
$filterent['destination']['port'] = $dstpfrom . "-" . $dstpto;
$filterent['descr'] = "NAT " . $_POST['descr'];
/*
* Our firewall filter description may be no longer than
* 63 characters, so don't let it be.
*/
$filterent['descr'] = substr("NAT " . $_POST['descr'], 0, 59);
$config['filter']['rule'][] = $filterent;
/* auto add rule to external port 21 as well since we are using
* pftpx to help open up ports automatically
*/
if($_POST['endport'] == "21") {
$filterent = array();
$filterent['interface'] = $_POST['interface'];
$filterent['protocol'] = $_POST['proto'];
$filterent['source']['any'] = "";
if($_POST['extaddr'] == "") {
$filterent['destination']['network'] = "wanip";
} else {
$filterent['destination']['address'] = $_POST['extaddr'];
}
$dstpfrom = $_POST['localbeginport'];
$dstpto = $dstpfrom + $_POST['endport'] - $_POST['beginport'];
if ($dstpfrom == $dstpto)
$filterent['destination']['port'] = $dstpfrom;
else
$filterent['destination']['port'] = $dstpfrom . "-" . $dstpto;
$filterent['descr'] = "NAT " . $_POST['descr'];
/* See comment above */
$filterent['descr'] = substr("NAT " . $_POST['descr'], 0, 63);
$config['filter']['rule'][] = $filterent;
touch($d_filterconfdirty_path);
write_config();
header("Location: firewall_nat.php?savemsg=The%20changes%20have%20been%20saved.%20%20Please%20note%20that%20we%20have%20added%20an%20additional%20rule%20for%20the%20FTP%20helper.");
exit;
}
touch($d_filterconfdirty_path);
}
write_config();
header("Location: firewall_nat.php");
exit;
}
}
$pgtitle = array("Firewall","NAT","Port Forward: Edit");
include("head.inc");
?>
"")
foreach($config['aliases']['alias'] as $alias_name) {
if(!stristr($alias_name['address'], ".")) {
if($isfirst == 1) $aliases .= ",";
$aliases .= "'" . $alias_name['name'] . "'";
$isfirst = 1;
} else {
if($addrisfirst == 1) $aliasesaddr .= ",";
$aliasesaddr .= "'" . $alias_name['name'] . "'";
$addrisfirst = 1;
}
}
?>