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#!/usr/local/bin/php
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<?php
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/*
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firewall_rules.php
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Copyright (C) 2004, 2005 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($config['filter']['rule'])) {
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$config['filter']['rule'] = array();
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}
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filter_rules_sort();
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$a_filter = &$config['filter']['rule'];
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$if = $_GET['if'];
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if ($_POST['if'])
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$if = $_POST['if'];
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$iflist = array("lan" => "LAN", "wan" => "WAN");
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if ($config['pptpd']['mode'] == "server")
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$iflist['pptp'] = "PPTP VPN";
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for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
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$iflist['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
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}
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if (!$if || !isset($iflist[$if]))
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$if = "lan";
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if ($_POST) {
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$pconfig = $_POST;
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if ($_POST['apply']) {
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$retval = 0;
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if (!file_exists($d_sysrebootreqd_path)) {
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config_lock();
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$retval = filter_configure();
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config_unlock();
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}
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$savemsg = get_std_save_message($retval);
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if ($retval == 0) {
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if (file_exists($d_natconfdirty_path))
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unlink($d_natconfdirty_path);
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if (file_exists($d_filterconfdirty_path))
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unlink($d_filterconfdirty_path);
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}
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}
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}
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if (isset($_POST['del_x'])) {
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/* delete selected rules */
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if (is_array($_POST['rule']) && count($_POST['rule'])) {
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foreach ($_POST['rule'] as $rulei) {
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unset($a_filter[$rulei]);
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}
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write_config();
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touch($d_filterconfdirty_path);
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header("Location: firewall_rules.php?if={$if}");
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exit;
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}
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} else if ($_GET['act'] == "toggle") {
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if ($a_filter[$_GET['id']]) {
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$a_filter[$_GET['id']]['disabled'] = !isset($a_filter[$_GET['id']]['disabled']);
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write_config();
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touch($d_filterconfdirty_path);
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header("Location: firewall_rules.php?if={$if}");
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exit;
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}
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} else {
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/* yuck - IE won't send value attributes for image buttons, while Mozilla does -
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so we use .x/.y to fine move button clicks instead... */
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unset($movebtn);
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foreach ($_POST as $pn => $pd) {
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if (preg_match("/move_(\d+)_x/", $pn, $matches)) {
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$movebtn = $matches[1];
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break;
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}
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}
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/* move selected rules before this rule */
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if (isset($movebtn) && is_array($_POST['rule']) && count($_POST['rule'])) {
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$a_filter_new = array();
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/* copy all rules < $movebtn and not selected */
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for ($i = 0; $i < $movebtn; $i++) {
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if (!in_array($i, $_POST['rule']))
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$a_filter_new[] = $a_filter[$i];
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}
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/* copy all selected rules */
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for ($i = 0; $i < count($a_filter); $i++) {
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if ($i == $movebtn)
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continue;
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if (in_array($i, $_POST['rule']))
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$a_filter_new[] = $a_filter[$i];
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}
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/* copy $movebtn rule */
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if ($movebtn < count($a_filter))
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$a_filter_new[] = $a_filter[$movebtn];
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/* copy all rules > $movebtn and not selected */
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for ($i = $movebtn+1; $i < count($a_filter); $i++) {
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if (!in_array($i, $_POST['rule']))
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$a_filter_new[] = $a_filter[$i];
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}
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$a_filter = $a_filter_new;
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write_config();
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touch($d_filterconfdirty_path);
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header("Location: firewall_rules.php?if={$if}");
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exit;
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}
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}
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?>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title><?=gentitle("Firewall: Rules");?></title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="gui.css" rel="stylesheet" type="text/css">
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</head>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<p class="pgtitle">Firewall: Rules</p>
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<form action="firewall_rules.php" method="post">
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<?php if ($savemsg) print_info_box($savemsg); ?>
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<?php if (file_exists($d_filterconfdirty_path)): ?><p>
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<?php print_info_box_np("The firewall rule configuration has been changed.<br>You must apply the changes in order for them to take effect.");?><br>
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<input name="apply" type="submit" class="formbtn" id="apply" value="Apply changes"></p>
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<?php endif; ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr><td>
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<ul id="tabnav">
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<?php foreach ($iflist as $ifent => $ifname):
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if ($ifent == $if): ?>
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<li class="tabact"><?=htmlspecialchars($ifname);?></li>
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<?php else: ?>
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<li class="tabinact"><a href="firewall_rules.php?if=<?=$ifent;?>"><?=htmlspecialchars($ifname);?></a></li>
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<?php endif; ?>
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<?php endforeach; ?>
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</ul>
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</td></tr>
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<tr>
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<td class="tabcont">
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td width="5%" class="list"> </td>
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<td width="10%" class="listhdrr">Proto</td>
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<td width="15%" class="listhdrr">Source</td>
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<td width="10%" class="listhdrr">Port</td>
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<td width="15%" class="listhdrr">Destination</td>
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<td width="10%" class="listhdrr">Port</td>
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<td width="25%" class="listhdr">Description</td>
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<td width="10%" class="list"></td>
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</tr>
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<?php $nrules = 0; for ($i = 0; isset($a_filter[$i]); $i++):
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$filterent = $a_filter[$i];
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if ($filterent['interface'] != $if)
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continue;
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?>
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<tr valign="top">
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<td class="listt">
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<?php if ($filterent['type'] == "block")
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$iconfn = "block";
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else if ($filterent['type'] == "reject") {
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if ($filterent['protocol'] == "tcp" || $filterent['protocol'] == "udp")
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$iconfn = "reject";
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else
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$iconfn = "block";
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} else
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$iconfn = "pass";
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if (isset($filterent['disabled'])) {
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$textss = "<span class=\"gray\">";
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$textse = "</span>";
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$iconfn .= "_d";
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} else {
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$textss = $textse = "";
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}
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?>
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<a href="?if=<?=$if;?>&act=toggle&id=<?=$i;?>"><img src="<?=$iconfn;?>.gif" width="11" height="11" border="0" title="click to toggle enabled/disabled status"></a>
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<?php if (isset($filterent['log'])):
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$iconfn = "log_s";
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if (isset($filterent['disabled']))
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$iconfn .= "_d";
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?>
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<br><img src="<?=$iconfn;?>.gif" width="11" height="15" border="0">
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<?php endif; ?>
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</td>
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<td class="listlr">
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<?=$textss;?><?php if (isset($filterent['protocol'])) echo strtoupper($filterent['protocol']); else echo "*"; ?><?=$textse;?>
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</td>
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<td class="listr">
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<?=$textss;?><?php echo htmlspecialchars(pprint_address($filterent['source'])); ?><?=$textse;?>
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</td>
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<td class="listr">
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<?=$textss;?><?php echo htmlspecialchars(pprint_port($filterent['source']['port'])); ?><?=$textse;?>
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</td>
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<td class="listr">
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<?=$textss;?><?php echo htmlspecialchars(pprint_address($filterent['destination'])); ?><?=$textse;?>
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</td>
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<td class="listr">
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<?=$textss;?><?php echo htmlspecialchars(pprint_port($filterent['destination']['port'])); ?><?=$textse;?>
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</td>
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<td class="listbg"><font color="#FFFFFF">
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<?=$textss;?><?=htmlspecialchars($filterent['descr']);?> <?=$textse;?>
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</td>
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<td valign="middle" nowrap class="list">
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<table border="0" cellspacing="0" cellpadding="1">
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<tr>
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<td><a href="firewall_rules_edit.php?id=<?=$i;?>"><img src="e.gif" title="edit rule" width="17" height="17" border="0"></a></td>
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<td align="center" valign="middle"><input type="checkbox" name="rule[]" value="<?=$i;?>" style="margin: 0; padding: 0; width: 15px; height: 15px;"></td>
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</tr>
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<tr>
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<td><input name="move_<?=$i;?>" type="image" src="left.gif" width="17" height="17" title="move selected rules before this rule"></td>
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<td><a href="firewall_rules_edit.php?dup=<?=$i;?>"><img src="plus.gif" title="add a new rule based on this one" width="17" height="17" border="0"></a></td>
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</tr>
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</table>
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</td>
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</tr>
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<?php $nrules++; endfor; ?>
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<?php if ($nrules == 0): ?>
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<td class="listt"></td>
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<td class="listlr" colspan="6" align="center" valign="middle">
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<span class="gray">
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No rules are currently defined for this interface.<br>
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All incoming connections on this interface will be blocked until you add pass rules.<br><br>
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Click the <a href="firewall_rules_edit.php?if=<?=$if;?>"><img src="plus.gif" title="add new rule" border="0" width="17" height="17" align="absmiddle"></a> button to add a new rule.</span>
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</td>
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<?php endif; ?>
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<tr>
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<td class="list" colspan="7"></td>
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<td class="list">
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<table border="0" cellspacing="0" cellpadding="1">
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<tr>
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<td>
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<?php if ($nrules == 0): ?><img src="left_d.gif" width="17" height="17" title="move selected rules to end" border="0"><?php else: ?><input name="move_<?=$i;?>" type="image" src="left.gif" width="17" height="17" title="move selected rules to end"><?php endif; ?></td>
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<td><a href="firewall_rules_edit.php?if=<?=$if;?>"><img src="plus.gif" title="add new rule" width="17" height="17" border="0"></a></td>
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</tr>
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<tr>
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<td><?php if ($nrules == 0): ?><img src="x_d.gif" width="17" height="17" title="delete selected rules" border="0"><?php else: ?><input name="del" type="image" src="x.gif" width="17" height="17" title="delete selected rules" onclick="return confirm('Do you really want to delete the selected rules?')"><?php endif; ?></td>
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<td></td>
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</tr>
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</table>
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</td>
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</tr>
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</table>
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<table border="0" cellspacing="0" cellpadding="0">
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<tr>
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<td width="16"><img src="pass.gif" width="11" height="11"></td>
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<td>pass</td>
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<td width="14"></td>
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<td width="16"><img src="block.gif" width="11" height="11"></td>
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<td>block</td>
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<td width="14"></td>
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<td width="16"><img src="reject.gif" width="11" height="11"></td>
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<td>reject</td>
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<td width="14"></td>
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<td width="16"><img src="log.gif" width="11" height="11"></td>
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<td>log</td>
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</tr>
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<tr>
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<td colspan="5" height="4"></td>
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</tr>
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<tr>
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<td><img src="pass_d.gif" width="11" height="11"></td>
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<td>pass (disabled)</td>
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<td></td>
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<td><img src="block_d.gif" width="11" height="11"></td>
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<td>block (disabled)</td>
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<td></td>
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<td><img src="reject_d.gif" width="11" height="11"></td>
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<td>reject (disabled)</td>
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<td></td>
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<td width="16"><img src="log_d.gif" width="11" height="11"></td>
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<td>log (disabled)</td>
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</tr>
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</table>
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</td>
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</tr>
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</table>
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<p>
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<strong><span class="red">Hint:<br>
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</span></strong>rules are evaluated on a first-match basis (i.e.
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the action of the first rule to match a packet will be executed).
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This means that if you use block rules, you'll have to pay attention
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to the rule order. Everything that isn't explicitly passed is blocked
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by default.</p>
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<input type="hidden" name="if" value="<?=$if;?>">
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</form>
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<?php include("fend.inc"); ?>
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</body>
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</html>
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