#!/usr/local/bin/php
.
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 ($ipv6rules = ($_GET['type'] == 'ipv6')) {
$configname = 'rule6';
$typelink = '&type=ipv6';
$maxnetmask = 128;
} else {
$configname = 'rule';
$typelink = '';
$maxnetmask = 32;
}
$pgtitle = array("Firewall", "Rules", "Edit"); /* make group manager happy */
$pgtitle = array("Firewall", ipv6enabled() ? ($ipv6rules ? 'IPv6 Rules' : 'IPv4 Rules') : 'Rules', "Edit");
$specialsrcdst = explode(" ", "any wanip lan pptp");
if (!is_array($config['filter'][$configname])) {
$config['filter'][$configname] = array();
}
filter_rules_sort();
$a_filter = &$config['filter'][$configname];
$id = $_GET['id'];
if (is_numeric($_POST['id']))
$id = $_POST['id'];
$after = $_GET['after'];
if (isset($_POST['after']))
$after = $_POST['after'];
if (isset($_GET['dup'])) {
$id = $_GET['dup'];
$after = $_GET['dup'];
}
function is_specialnet($net) {
global $specialsrcdst;
if (in_array($net, $specialsrcdst) || (strstr($net, "opt") && !is_alias($net)))
return true;
else
return false;
}
function address_to_pconfig($adr, &$padr, &$pmask, &$pnot, &$pbeginport, &$pendport) {
global $maxnetmask;
if (isset($adr['any']))
$padr = "any";
else if ($adr['network'])
$padr = $adr['network'];
else if ($adr['address']) {
list($padr, $pmask) = explode("/", $adr['address']);
if (!$pmask)
$pmask = $maxnetmask;
}
if (isset($adr['not']))
$pnot = 1;
else
$pnot = 0;
if ($adr['port']) {
list($pbeginport, $pendport) = explode("-", $adr['port']);
if (!$pendport)
$pendport = $pbeginport;
} else {
$pbeginport = "any";
$pendport = "any";
}
}
function pconfig_to_address(&$adr, $padr, $pmask, $pnot, $pbeginport, $pendport) {
global $maxnetmask;
$adr = array();
if ($padr == "any")
$adr['any'] = true;
else if (is_specialnet($padr))
$adr['network'] = $padr;
else {
$adr['address'] = $padr;
if ($pmask != $maxnetmask)
$adr['address'] .= "/" . $pmask;
}
$adr['not'] = $pnot ? true : false;
if (($pbeginport != 0) && ($pbeginport != "any")) {
if ($pbeginport != $pendport)
$adr['port'] = $pbeginport . "-" . $pendport;
else
$adr['port'] = $pbeginport;
}
}
if (isset($id) && $a_filter[$id]) {
$pconfig['interface'] = $a_filter[$id]['interface'];
if (!isset($a_filter[$id]['type']))
$pconfig['type'] = "pass";
else
$pconfig['type'] = $a_filter[$id]['type'];
if (isset($a_filter[$id]['protocol']))
$pconfig['proto'] = $a_filter[$id]['protocol'];
else
$pconfig['proto'] = "any";
if ($a_filter[$id]['protocol'] == "icmp" || $a_filter[$id]['protocol'] == "ipv6-icmp")
$pconfig['icmptype'] = $a_filter[$id]['icmptype'];
address_to_pconfig($a_filter[$id]['source'], $pconfig['src'],
$pconfig['srcmask'], $pconfig['srcnot'],
$pconfig['srcbeginport'], $pconfig['srcendport']);
address_to_pconfig($a_filter[$id]['destination'], $pconfig['dst'],
$pconfig['dstmask'], $pconfig['dstnot'],
$pconfig['dstbeginport'], $pconfig['dstendport']);
$pconfig['disabled'] = isset($a_filter[$id]['disabled']);
$pconfig['log'] = isset($a_filter[$id]['log']);
$pconfig['frags'] = isset($a_filter[$id]['frags']);
$pconfig['descr'] = $a_filter[$id]['descr'];
} else {
/* defaults */
if ($_GET['if'])
$pconfig['interface'] = $_GET['if'];
$pconfig['type'] = "pass";
$pconfig['src'] = "any";
$pconfig['dst'] = "any";
}
if (isset($_GET['dup']))
unset($id);
if ($_POST) {
if (($_POST['proto'] != "tcp") && ($_POST['proto'] != "udp") && ($_POST['proto'] != "tcp/udp")) {
$_POST['srcbeginport'] = 0;
$_POST['srcendport'] = 0;
$_POST['dstbeginport'] = 0;
$_POST['dstendport'] = 0;
} else {
if ($_POST['srcbeginport_cust'] && !$_POST['srcbeginport'])
$_POST['srcbeginport'] = $_POST['srcbeginport_cust'];
if ($_POST['srcendport_cust'] && !$_POST['srcendport'])
$_POST['srcendport'] = $_POST['srcendport_cust'];
if ($_POST['srcbeginport'] == "any") {
$_POST['srcbeginport'] = 0;
$_POST['srcendport'] = 0;
} else {
if (!$_POST['srcendport'])
$_POST['srcendport'] = $_POST['srcbeginport'];
}
if ($_POST['srcendport'] == "any")
$_POST['srcendport'] = $_POST['srcbeginport'];
if ($_POST['dstbeginport_cust'] && !$_POST['dstbeginport'])
$_POST['dstbeginport'] = $_POST['dstbeginport_cust'];
if ($_POST['dstendport_cust'] && !$_POST['dstendport'])
$_POST['dstendport'] = $_POST['dstendport_cust'];
if ($_POST['dstbeginport'] == "any") {
$_POST['dstbeginport'] = 0;
$_POST['dstendport'] = 0;
} else {
if (!$_POST['dstendport'])
$_POST['dstendport'] = $_POST['dstbeginport'];
}
if ($_POST['dstendport'] == "any")
$_POST['dstendport'] = $_POST['dstbeginport'];
}
if (is_specialnet($_POST['srctype'])) {
$_POST['src'] = $_POST['srctype'];
$_POST['srcmask'] = 0;
} else if ($_POST['srctype'] == "single") {
$_POST['srcmask'] = $maxnetmask;
}
if (is_specialnet($_POST['dsttype'])) {
$_POST['dst'] = $_POST['dsttype'];
$_POST['dstmask'] = 0;
} else if ($_POST['dsttype'] == "single") {
$_POST['dstmask'] = $maxnetmask;
}
unset($input_errors);
$pconfig = $_POST;
/* input validation */
$reqdfields = explode(" ", "type interface proto src dst");
$reqdfieldsn = explode(",", "Type,Interface,Protocol,Source,Destination");
if (!(is_specialnet($_POST['srctype']) || ($_POST['srctype'] == "single"))) {
$reqdfields[] = "srcmask";
$reqdfieldsn[] = "Source bit count";
}
if (!(is_specialnet($_POST['dsttype']) || ($_POST['dsttype'] == "single"))) {
$reqdfields[] = "dstmask";
$reqdfieldsn[] = "Destination bit count";
}
do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
if (!$_POST['srcbeginport']) {
$_POST['srcbeginport'] = 0;
$_POST['srcendport'] = 0;
}
if (!$_POST['dstbeginport']) {
$_POST['dstbeginport'] = 0;
$_POST['dstendport'] = 0;
}
if (($_POST['type'] == "reject") && ($_POST['proto'] != "tcp") && ($_POST['proto'] != "udp")) {
$input_errors[] = "Reject only works when the protocol is set to either TCP or UDP.";
}
if (($_POST['srcbeginport'] && !is_port($_POST['srcbeginport']))) {
$input_errors[] = "The start source port must be an integer between 1 and 65535.";
}
if (($_POST['srcendport'] && !is_port($_POST['srcendport']))) {
$input_errors[] = "The end source port must be an integer between 1 and 65535.";
}
if (($_POST['dstbeginport'] && !is_port($_POST['dstbeginport']))) {
$input_errors[] = "The start destination port must be an integer between 1 and 65535.";
}
if (($_POST['dstendport'] && !is_port($_POST['dstendport']))) {
$input_errors[] = "The end destination port must be an integer between 1 and 65535.";
}
if (!is_specialnet($_POST['srctype'])) {
if ($_POST['src'] && !($ipv6rules ? is_ipaddr6($_POST['src']) : is_ipaddroranyalias($_POST['src']))) {
$input_errors[] = "A valid source IP address or alias must be specified.";
}
if (($_POST['srcmask'] && !is_numericint($_POST['srcmask']))) {
$input_errors[] = "A valid source bit count must be specified.";
}
}
if (!is_specialnet($_POST['dsttype'])) {
if ($_POST['dst'] && !($ipv6rules ? is_ipaddr6($_POST['dst']) : is_ipaddroranyalias($_POST['dst']))) {
$input_errors[] = "A valid destination IP address or alias must be specified.";
}
if (($_POST['dstmask'] && !is_numericint($_POST['dstmask']))) {
$input_errors[] = "A valid destination bit count must be specified.";
}
}
if ($_POST['srcbeginport'] > $_POST['srcendport']) {
/* swap */
$tmp = $_POST['srcendport'];
$_POST['srcendport'] = $_POST['srcbeginport'];
$_POST['srcbeginport'] = $tmp;
}
if ($_POST['dstbeginport'] > $_POST['dstendport']) {
/* swap */
$tmp = $_POST['dstendport'];
$_POST['dstendport'] = $_POST['dstbeginport'];
$_POST['dstbeginport'] = $tmp;
}
if (!$input_errors) {
$filterent = array();
$filterent['type'] = $_POST['type'];
$filterent['interface'] = $_POST['interface'];
if ($_POST['proto'] != "any")
$filterent['protocol'] = $_POST['proto'];
else
unset($filterent['protocol']);
if (($_POST['proto'] == "icmp" || $_POST['proto'] == "ipv6-icmp") && $_POST['icmptype'])
$filterent['icmptype'] = $_POST['icmptype'];
else
unset($filterent['icmptype']);
pconfig_to_address($filterent['source'], $_POST['src'],
$_POST['srcmask'], $_POST['srcnot'],
$_POST['srcbeginport'], $_POST['srcendport']);
pconfig_to_address($filterent['destination'], $_POST['dst'],
$_POST['dstmask'], $_POST['dstnot'],
$_POST['dstbeginport'], $_POST['dstendport']);
$filterent['disabled'] = $_POST['disabled'] ? true : false;
$filterent['log'] = $_POST['log'] ? true : false;
$filterent['frags'] = $_POST['frags'] ? true : false;
$filterent['descr'] = $_POST['descr'];
if (isset($id) && $a_filter[$id])
$a_filter[$id] = $filterent;
else {
if (is_numeric($after))
array_splice($a_filter, $after+1, 0, array($filterent));
else
$a_filter[] = $filterent;
}
write_config();
touch($d_filterconfdirty_path);
header("Location: firewall_rules.php?if=" . $_POST['interface'] . $typelink);
exit;
}
}
?>