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<?php
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/*
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diag_arp.php
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part of m0n0wall (http://m0n0.ch/wall)
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Copyright (C) 2005 Paul Taylor (paultaylor@winndixie.com) and 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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$pgtitle = "Diagnostics: ARP Table";
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include("head.inc");
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?>
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<body link="#000000" vlink="#000000" alink="#000000">
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<script src="/javascript/sorttable.js"></script>
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<? include("fbegin.inc"); ?>
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<p class="pgtitle"><?=$pgtitle?></p>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td>
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<?php
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$fp = @fopen("{$g['dhcpd_chroot_path']}/var/db/dhcpd.leases","r");
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if ($fp) {
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$return = array();
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while ($line = fgets($fp)) {
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$matches = "";
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// Sort out comments
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// C-style comments not supported!
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if (preg_match("/^\s*[\r|\n]/", $line, $matches[0]) ||
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preg_match("/^([^\"#]*)#.*$/", $line, $matches[1]) ||
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preg_match("/^([^\"]*)\/\/.*$/", $line, $matches[2]) ||
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preg_match("/\s*#(.*)/", $line, $matches[3]) ||
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preg_match("/\\\"\176/", $line, $matches[4])
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) {
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$line = "";
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continue;
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}
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if (preg_match("/(.*)#(.*)/", $line, $matches))
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$line = $matches[0];
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// Tokenize lines
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do {
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if (preg_match("/^\s*\"([^\"]*)\"(.*)$/", $line, $matches)) {
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$line = $matches[2];
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$return[] = array($matches[1], 0);
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} else if (preg_match("/^\s*([{};])(.*)$/", $line, $matches)) {
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$line = $matches[2];
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$return[] = array($matches[0], 1);
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} else if (preg_match("/^\s*([^{}; \t]+)(.*)$/", $line, $matches)) {
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$line = $matches[2];
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$return[] = array($matches[1], 0);
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} else
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break;
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} while($line);
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$lines++;
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}
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fclose($fp);
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$leases = array();
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$i = 0;
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// Put everything together again
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while ($data = array_shift($return)) {
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if ($data[0] == "next") {
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$d = array_shift($return);
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}
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if ($data[0] == "lease") {
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$d = array_shift($return);
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$leases[$i]['ip'] = $d[0];
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}
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if ($data[0] == "client-hostname") {
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$d = array_shift($return);
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$leases[$i]['hostname'] = $d[0];
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}
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if ($data[0] == "hardware") {
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$d = array_shift($return);
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if ($d[0] == "ethernet") {
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$d = array_shift($return);
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$leases[$i]['mac'] = $d[0];
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}
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} else if ($data[0] == "starts") {
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$d = array_shift($return);
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$d = array_shift($return);
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$leases[$i]['start'] = $d[0];
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$d = array_shift($return);
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$leases[$i]['start'] .= " " . $d[0];
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} else if ($data[0] == "ends") {
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$d = array_shift($return);
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$d = array_shift($return);
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$leases[$i]['end'] = $d[0];
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$d = array_shift($return);
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$leases[$i]['end'] .= " " . $d[0];
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} else if ($data[0] == "binding") {
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$d = array_shift($return);
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if ($d[0] == "state") {
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$d = array_shift($return);
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$leases[$i]['act'] = $d[0];
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}
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} else if (($data[0] == "}") && ($data[1] == 1)) // End of group
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$i++;
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}
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// Put this in an easy to use form
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$dhcpmac = array();
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$dhcpip = array();
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foreach ($leases as $value) {
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$dhcpmac[$value['mac']] = $value['hostname'];
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$dhcpip[$value['ip']] = $value['hostname'];
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}
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unset($data);
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}
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exec("/usr/sbin/arp -an",$rawdata);
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$i = 0;
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$ifdescrs = array('wan' => 'WAN', 'lan' => 'LAN');
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for ($j = 1; isset($config['interfaces']['opt' . $j]); $j++) {
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$ifdescrs['opt' . $j] = $config['interfaces']['opt' . $j]['descr'];
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}
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foreach ($ifdescrs as $key =>$interface) {
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$hwif[$config['interfaces'][$key]['if']] = $interface;
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}
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$data = array();
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foreach ($rawdata as $line) {
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$elements = explode(' ',$line);
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if ($elements[3] != "(incomplete)") {
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$arpent = array();
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$arpent['ip'] = trim(str_replace(array('(',')'),'',$elements[1]));
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$arpent['mac'] = trim($elements[3]);
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$arpent['interface'] = trim($elements[5]);
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$data[] = $arpent;
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}
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}
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function getHostName($mac,$ip)
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{
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global $dhcpmac, $dhcpip;
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if ($dhcpmac[$mac])
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return $dhcpmac[$mac];
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else if ($dhcpip[$ip])
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return $dhcpip[$ip];
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else if(gethostbyaddr($ip) <> "" and gethostbyaddr($ip) <> $ip)
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return gethostbyaddr($ip);
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else
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return " ";
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}
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?>
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<table class="sortable" name="sortabletable" id="sortabletable" width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td class="listhdrr">IP address</td>
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<td class="listhdrr">MAC address</td>
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<td class="listhdrr">Hostname</td>
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<td class="listhdr">Interface</td>
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<td class="list"></td>
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</tr>
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<?php foreach ($data as $entry): ?>
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<tr>
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<td class="listlr"><?=$entry['ip'];?></td>
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<td class="listr"><?=$entry['mac'];?></td>
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<td class="listr"><?=getHostName($entry['mac'], $entry['ip']);?></td>
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<td class="listr"><?=$hwif[$entry['interface']];?></td>
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</tr>
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<?php endforeach; ?>
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</table>
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</td></tr></table>
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<?php include("fend.inc"); ?>
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