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<?php
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/* $Id$ */
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/*
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diag_dhcp_leases.php
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Copyright (C) 2004 Scott Ullrich
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All rights reserved.
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originially 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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##|+PRIV
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##|*IDENT=page-status-dhcpleases
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##|*NAME=Status: DHCP leases page
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##|*DESCR=Allow access to the 'Status: DHCP leases' page.
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##|*MATCH=diag_dhcp_leases.php*
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##|-PRIV
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require("guiconfig.inc");
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$pgtitle = array("Status","DHCP leases");
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$leasesfile = "{$g['dhcpd_chroot_path']}/var/db/dhcpd.leases";
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if (($_GET['deleteip']) && (is_ipaddr($_GET['deleteip']))) {
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/* Stop DHCPD */
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killbyname("dhcpd");
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/* Read existing leases */
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$leases_contents = explode("\n", file_get_contents($leasesfile));
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$newleases_contents = array();
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$i=0;
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while ($i < count($leases_contents)) {
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/* Find the lease(s) we want to delete */
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if ($leases_contents[$i] == "lease {$_GET['deleteip']} {") {
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/* Skip to the end of the lease declaration */
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do {
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$i++;
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} while ($leases_contents[$i] != "}");
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} else {
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/* It's a line we want to keep, copy it over. */
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$newleases_contents[] = $leases_contents[$i];
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}
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$i++;
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}
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/* Write out the new leases file */
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$fd = fopen($leasesfile, 'w');
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fwrite($fd, implode("\n", $newleases_contents));
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fclose($fd);
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/* Restart DHCP Service */
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services_dhcpd_configure();
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header("Location: diag_dhcp_leases.php?all={$_GET['all']}");
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}
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<?php
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function leasecmp($a, $b) {
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return strcmp($a[$_GET['order']], $b[$_GET['order']]);
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}
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function adjust_gmt($dt) {
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$ts = strtotime($dt . " GMT");
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return strftime("%Y/%m/%d %H:%M:%S", $ts);
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}
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function remove_duplicate($array, $field)
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{
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foreach ($array as $sub)
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$cmp[] = $sub[$field];
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$unique = array_unique(array_reverse($cmp,true));
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foreach ($unique as $k => $rien)
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$new[] = $array[$k];
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return $new;
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}
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$awk = "/usr/bin/awk";
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/* this pattern sticks comments into a single array item */
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$cleanpattern = "'{ gsub(\"#.*\", \"\");} { gsub(\";\", \"\"); print;}'";
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/* We then split the leases file by } */
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$splitpattern = "'BEGIN { RS=\"}\";} {for (i=1; i<=NF; i++) printf \"%s \", \$i; printf \"}\\n\";}'";
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/* stuff the leases file in a proper format into a array by line */
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exec("cat {$leasesfile} | {$awk} {$cleanpattern} | {$awk} {$splitpattern}", $leases_content);
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$leases_count = count($leases_content);
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exec("/usr/sbin/arp -an", $rawdata);
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$arpdata = 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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$arpdata[] = $arpent['ip'];
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}
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}
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$pools = array();
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$leases = array();
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$i = 0;
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$l = 0;
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$p = 0;
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// Put everything together again
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while($i < $leases_count) {
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/* split the line by space */
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$data = explode(" ", $leases_content[$i]);
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/* walk the fields */
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$f = 0;
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$fcount = count($data);
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/* with less then 20 fields there is nothing useful */
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if($fcount < 20) {
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$i++;
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continue;
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}
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while($f < $fcount) {
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switch($data[$f]) {
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case "failover":
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$pools[$p]['name'] = $data[$f+2];
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$pools[$p]['mystate'] = $data[$f+7];
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$pools[$p]['peerstate'] = $data[$f+14];
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$pools[$p]['mydate'] = $data[$f+10];
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$pools[$p]['mydate'] .= " " . $data[$f+11];
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$pools[$p]['peerdate'] = $data[$f+17];
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$pools[$p]['peerdate'] .= " " . $data[$f+18];
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$p++;
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$i++;
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continue 3;
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case "lease":
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$leases[$l]['ip'] = $data[$f+1];
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$leases[$l]['type'] = "dynamic";
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$f = $f+2;
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break;
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case "starts":
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$leases[$l]['start'] = $data[$f+2];
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$leases[$l]['start'] .= " " . $data[$f+3];
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$f = $f+3;
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break;
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case "ends":
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$leases[$l]['end'] = $data[$f+2];
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$leases[$l]['end'] .= " " . $data[$f+3];
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$f = $f+3;
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break;
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case "tstp":
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$f = $f+3;
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break;
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case "tsfp":
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$f = $f+3;
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break;
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case "atsfp":
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$f = $f+3;
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break;
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case "cltt":
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$f = $f+3;
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break;
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case "binding":
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switch($data[$f+2]) {
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case "active":
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$leases[$l]['act'] = "active";
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break;
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case "free":
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$leases[$l]['act'] = "expired";
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$leases[$l]['online'] = "offline";
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break;
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case "backup":
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$leases[$l]['act'] = "reserved";
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$leases[$l]['online'] = "offline";
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break;
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}
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$f = $f+1;
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break;
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case "next":
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/* skip the next binding statement */
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$f = $f+3;
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break;
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case "hardware":
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$leases[$l]['mac'] = $data[$f+2];
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/* check if it's online and the lease is active */
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if (in_array($leases[$l]['ip'], $arpdata)) {
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$leases[$l]['online'] = 'online';
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} else {
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$leases[$l]['online'] = 'offline';
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}
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$f = $f+2;
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break;
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case "client-hostname":
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if($data[$f+1] <> "") {
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$leases[$l]['hostname'] = preg_replace('/"/','',$data[$f+1]);
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} else {
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$hostname = gethostbyaddr($leases[$l]['ip']);
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if($hostname <> "") {
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$leases[$l]['hostname'] = $hostname;
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}
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}
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$f = $f+1;
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break;
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case "uid":
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$f = $f+1;
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break;
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}
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$f++;
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}
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$l++;
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$i++;
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}
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/* remove duplicate items by mac address */
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if(count($leases) > 0) {
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$leases = remove_duplicate($leases,"ip");
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}
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if(count($pools) > 0) {
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$pools = remove_duplicate($pools,"name");
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asort($pools);
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}
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foreach($config['interfaces'] as $ifname => $ifarr) {
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if (is_array($config['dhcpd'][$ifname]) &&
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is_array($config['dhcpd'][$ifname]['staticmap'])) {
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foreach($config['dhcpd'][$ifname]['staticmap'] as $static) {
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$slease = array();
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$slease['ip'] = $static['ipaddr'];
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$slease['type'] = "static";
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$slease['mac'] = $static['mac'];
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$slease['start'] = "";
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$slease['end'] = "";
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$slease['hostname'] = htmlentities($static['hostname']);
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$slease['act'] = "static";
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$online = exec("/usr/sbin/arp -an |/usr/bin/grep {$slease['mac']}| /usr/bin/wc -l|/usr/bin/awk '{print $1;}'");
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if ($online == 1) {
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$slease['online'] = 'online';
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} else {
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$slease['online'] = 'offline';
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}
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$leases[] = $slease;
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}
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}
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}
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if ($_GET['order'])
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usort($leases, "leasecmp");
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?>
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<?php
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/* only print pool status when we have one */
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if(count($pools) > 0) {
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?>
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<table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td class="listhdrr">Failover Group</a></td>
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<td class="listhdrr">My State</a></td>
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<td class="listhdrr">Since</a></td>
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<td class="listhdrr">Peer State</a></td>
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<td class="listhdrr">Since</a></td>
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</tr>
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<?php
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foreach ($pools as $data) {
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echo "<tr>\n";
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echo "<td class=\"listlr\">{$fspans}{$data['name']}{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}{$data['mystate']}{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['mydate']) . "{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}{$data['peerstate']}{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['peerdate']) . "{$fspane} </td>\n";
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echo "<td class=\"list\" valign=\"middle\" width=\"17\"> </td>\n";
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echo "<td class=\"list\" valign=\"middle\" width=\"17\"> </td>\n";
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echo "</tr>\n";
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}
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?>
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</table>
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<?php
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/* only print pool status when we have one */
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}
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?>
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310
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<p>
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311
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312
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<table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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314
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<td class="listhdrr"><a href="#">IP address</a></td>
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315
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<td class="listhdrr"><a href="#">MAC address</a></td>
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<td class="listhdrr"><a href="#">Hostname</a></td>
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<td class="listhdrr"><a href="#">Start</a></td>
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<td class="listhdrr"><a href="#">End</a></td>
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<td class="listhdrr"><a href="#">Online</a></td>
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<td class="listhdrr"><a href="#">Lease Type</a></td>
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</tr>
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<?php
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foreach ($leases as $data) {
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if (($data['act'] == "active") || ($data['act'] == "static") || ($_GET['all'] == 1)) {
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325
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if ($data['act'] != "active" && $data['act'] != "static") {
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$fspans = "<span class=\"gray\">";
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327
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$fspane = "</span>";
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328
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} else {
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329
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$fspans = $fspane = "";
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330
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}
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331
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$lip = ip2long($data['ip']);
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332
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if ($data['act'] == "static") {
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333
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foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
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334
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if(is_array($dhcpifconf['staticmap'])) {
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335
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foreach ($dhcpifconf['staticmap'] as $staticent) {
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336
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if ($data['ip'] == $staticent['ipaddr']) {
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337
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$data['if'] = $dhcpif;
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break;
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339
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}
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340
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}
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341
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}
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342
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/* exit as soon as we have an interface */
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343
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if ($data['if'] != "")
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344
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break;
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345
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}
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346
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} else {
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347
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foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
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348
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if (($lip >= ip2long($dhcpifconf['range']['from'])) && ($lip <= ip2long($dhcpifconf['range']['to']))) {
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349
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$data['if'] = $dhcpif;
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350
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break;
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351
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}
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352
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}
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353
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}
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354
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echo "<tr>\n";
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355
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echo "<td class=\"listlr\">{$fspans}{$data['ip']}{$fspane} </td>\n";
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356
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if ($data['online'] != "online") {
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357
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echo "<td class=\"listr\">{$fspans}<a href=\"services_wol.php?if={$data['if']}&mac={$data['mac']}\" title=\"send Wake on Lan packet to mac\">{$data['mac']}</a>{$fspane} </td>\n";
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358
|
} else {
|
|
359
|
echo "<td class=\"listr\">{$fspans}{$data['mac']}{$fspane} </td>\n";
|
|
360
|
}
|
|
361
|
echo "<td class=\"listr\">{$fspans}" . htmlentities($data['hostname']) . "{$fspane} </td>\n";
|
|
362
|
if ($data['type'] != "static") {
|
|
363
|
echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['start']) . "{$fspane} </td>\n";
|
|
364
|
echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['end']) . "{$fspane} </td>\n";
|
|
365
|
} else {
|
|
366
|
echo "<td class=\"listr\">{$fspans} n/a {$fspane} </td>\n";
|
|
367
|
echo "<td class=\"listr\">{$fspans} n/a {$fspane} </td>\n";
|
|
368
|
}
|
|
369
|
echo "<td class=\"listr\">{$fspans}{$data['online']}{$fspane} </td>\n";
|
|
370
|
echo "<td class=\"listr\">{$fspans}{$data['act']}{$fspane} </td>\n";
|
|
371
|
|
|
372
|
if ($data['type'] == "dynamic") {
|
|
373
|
echo "<td valign=\"middle\"><a href=\"services_dhcp_edit.php?if={$data['if']}&mac={$data['mac']}&hostname={$data['hostname']}\">";
|
|
374
|
echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_plus.gif\" width=\"17\" height=\"17\" border=\"0\" title=\"add a static mapping for this MAC address\"></a></td>\n";
|
|
375
|
} else {
|
|
376
|
echo "<td class=\"list\" valign=\"middle\">";
|
|
377
|
echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_plus_mo.gif\" width=\"17\" height=\"17\" border=\"0\"></td>\n";
|
|
378
|
}
|
|
379
|
|
|
380
|
echo "<td valign=\"middle\"><a href=\"services_wol_edit.php?if={$data['if']}&mac={$data['mac']}&descr={$data['hostname']}\">";
|
|
381
|
echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_wol_all.gif\" width=\"17\" height=\"17\" border=\"0\" title=\"add a Wake on Lan mapping for this MAC address\"></a></td>\n";
|
|
382
|
|
|
383
|
/* Only show the button for offline dynamic leases */
|
|
384
|
if (($data['type'] == "dynamic") && ($data['online'] != "online")) {
|
|
385
|
echo "<td class=\"list\" valign=\"middle\"><a href=\"diag_dhcp_leases.php?deleteip={$data['ip']}&all={$_GET['all']}\">";
|
|
386
|
echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_x.gif\" width=\"17\" height=\"17\" border=\"0\" title=\"delete this dhcp lease\"></a></td>\n";
|
|
387
|
}
|
|
388
|
echo "</tr>\n";
|
|
389
|
}
|
|
390
|
}
|
|
391
|
|
|
392
|
?>
|
|
393
|
</table>
|
|
394
|
<p>
|
|
395
|
<form action="diag_dhcp_leases.php" method="GET">
|
|
396
|
<input type="hidden" name="order" value="<?=$_GET['order'];?>">
|
|
397
|
<?php if ($_GET['all']): ?>
|
|
398
|
<input type="hidden" name="all" value="0">
|
|
399
|
<input type="submit" class="formbtn" value="Show active and static leases only">
|
|
400
|
<?php else: ?>
|
|
401
|
<input type="hidden" name="all" value="1">
|
|
402
|
<input type="submit" class="formbtn" value="Show all configured leases">
|
|
403
|
<?php endif; ?>
|
|
404
|
</form>
|
|
405
|
<?php if($leases == 0): ?>
|
|
406
|
<p><strong>No leases file found. Is the DHCP server active?</strong></p>
|
|
407
|
<?php endif; ?>
|
|
408
|
|
|
409
|
<?php include("fend.inc"); ?>
|
|
410
|
</body>
|
|
411
|
</html>
|