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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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require("guiconfig.inc");
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$pgtitle = "Diagnostics: DHCP leases";
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<script src="/javascript/sorttable.js"></script>
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<?php include("fbegin.inc"); ?>
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<p class="pgtitle"><?=$pgtitle?></p>
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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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$unique = array_unique($cmp);
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foreach ($unique as $k => $rien)
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$new[] = $array[$k];
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return $new;
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}
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$leasesfile = "{$g['dhcpd_chroot_path']}/var/db/dhcpd.leases";
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$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($leases_content);
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$pools = array();
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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($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($data);
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while($f < $fcount) {
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if ($data[$f] == "lease") {
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$leases[$i]['ip'] = $data[$f+1];
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$leases[$i]['type'] = "dynamic";
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}
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if ($data[$f] == "failover") {
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$pools[$i]['name'] = $data[$f+2];
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$pools[$i]['mystate'] = $data[$f+7];
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$pools[$i]['peerstate'] = $data[$f+14];
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$pools[$i]['mydate'] = $data[$f+10];
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$pools[$i]['mydate'] .= " " . $data[$f+11];
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$pools[$i]['peerdate'] = $data[$f+17];
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$pools[$i]['peerdate'] .= " " . $data[$f+18];
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}
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if ($data[$f] == "client-hostname") {
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if($data[$f] <> "") {
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$leases[$i]['hostname'] = preg_replace('/"/','',$data[$f+1]);
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} else {
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$hostname = gethostbyaddr($leases[$i]['ip']);
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if($hostname <> "") {
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$leases[$i]['hostname'] = $hostname;
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}
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}
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}
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if ($data[$f] == "hardware") {
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if ($data[$f+1] == "ethernet") {
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$leases[$i]['mac'] = $data[$f+2];
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/* check if it's online */
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$online = exec("/usr/sbin/arp -an |/usr/bin/grep {$leases[$i]['mac']}| grep {$leases[$i]['ip']}| /usr/bin/wc -l|/usr/bin/awk '{print $1;}'");
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if ($online == 1) {
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$leases[$i]['online'] = 'online';
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} else {
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$leases[$i]['online'] = 'offline';
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}
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}
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} else if ($data[$f] == "starts") {
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$leases[$i]['start'] = $data[$f+2];
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$leases[$i]['start'] .= " " . $data[$f+3];
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} else if ($data[$f] == "ends") {
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$leases[$i]['end'] = $data[$f+2];
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$leases[$i]['end'] .= " " . $data[$f+3];
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} else if (($data[$f] == "binding") && (!isset($leases[$i]['act']))){
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if ($data[$f+1] == "state") {
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switch($data[$f+2]) {
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case 'active':
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$leases[$i]['act'] = 'active';
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break;
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case 'free':
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$leases[$i]['act'] = 'expired';
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break;
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case 'backup':
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$leases[$i]['act'] = 'reserved';
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$leases[$i]['online'] = 'offline';
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break;
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}
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}
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} elseif (($data[$f] == "}") && ($data[1] == 1)) {
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// End of group
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//updated leases are appended to the end of the lease file. if we aren't
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//showing everything just show the most current lease in the list
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if(!$_GET['all']) {
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$l = $leases[$i]['ip'];
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for($k = 0; $k < $i; $k++) {
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if($leases[$k]['ip'] == $l) {
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array_splice($leases, $k, 1);
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--$i;
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break;
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}
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}
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}
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}
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$f++;
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}
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$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($leases,"mac");
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}
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if(count($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'][$ifname]['staticmap'])) {
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foreach($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'] = gmdate("M d Y H:i:s", time());
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$slease['end'] = gmdate("M d Y H:i:s", time());
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$slease['end'] = gmdate("M d Y H:i:s", strtotime('+5 minutes'));
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$slease['hostname'] = $static['hostname'];
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$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="sortable" id="sortabletable" name="sortabletable" 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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<p>
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<table class="sortable" id="sortabletable" name="sortabletable" width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td class="listhdrr"><a href="?all=<?=$_GET['all'];?>&order=ip">IP address</a></td>
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<td class="listhdrr"><a href="?all=<?=$_GET['all'];?>&order=mac">MAC address</a></td>
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<td class="listhdrr"><a href="?all=<?=$_GET['all'];?>&order=hostname">Hostname</a></td>
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<td class="listhdrr"><a href="?all=<?=$_GET['all'];?>&order=start">Start</a></td>
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<td class="listhdrr"><a href="?all=<?=$_GET['all'];?>&order=end">End</a></td>
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<td class="listhdr"><a href="?all=<?=$_GET['all'];?>&order=online">Online</a></td>
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<td class="listhdr"><a href="?all=<?=$_GET['all'];?>&order=act">Lease Type</a></td>
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</tr>
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<?php
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foreach ($leases as $data) {
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if (($data['act'] == "active") || ($data['act'] == "static") || ($_GET['all'] == 1)) {
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if ($data['act'] != "active" && $data['act'] != "static") {
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$fspans = "<span class=\"gray\">";
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$fspane = "</span>";
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} else {
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$fspans = $fspane = "";
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}
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$lip = ip2long($data['ip']);
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if ($data['act'] == "static") {
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foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
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if(is_array($dhcpifconf['staticmap'])) {
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foreach ($dhcpifconf['staticmap'] as $staticent) {
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if ($data['ip'] == $staticent['ipaddr']) {
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$data['if'] = $dhcpif;
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break;
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}
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}
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}
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/* exit as soon as we have an interface */
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if ($data['if'] != "")
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break;
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}
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} else {
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foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
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if (($lip >= ip2long($dhcpifconf['range']['from'])) && ($lip <= ip2long($dhcpifconf['range']['to']))) {
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$data['if'] = $dhcpif;
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break;
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}
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}
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}
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echo "<tr>\n";
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echo "<td class=\"listlr\">{$fspans}{$data['ip']}{$fspane} </td>\n";
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if ($data['online'] != "online") {
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echo "<td class=\"listr\">{$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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} else {
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echo "<td class=\"listr\">{$fspans}{$data['mac']}{$fspane} </td>\n";
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}
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echo "<td class=\"listr\">{$fspans}{$data['hostname']}{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['start']) . "{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}" . adjust_gmt($data['end']) . "{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}{$data['online']}{$fspane} </td>\n";
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echo "<td class=\"listr\">{$fspans}{$data['act']}{$fspane} </td>\n";
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if ($data['type'] == "dynamic") {
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echo "<td class=\"list\" valign=\"middle\"><a href=\"services_dhcp_edit.php?if={$data['if']}&mac={$data['mac']}&hostname={$data['hostname']}\">";
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echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_plus.gif\" width=\"17\" height=\"17\" border=\"0\" title=\"add a static mapping for this MAC address\"></a></td>\n";
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} else {
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echo "<td class=\"list\" valign=\"middle\">";
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echo "<img src=\"/themes/{$g['theme']}/images/icons/icon_plus_mo.gif\" width=\"17\" height=\"17\" border=\"0\"></td>\n";
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}
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echo "<td valign=\"middle\"><a href=\"services_wol_edit.php?if={$data['if']}&mac={$data['mac']}&descr={$data['hostname']}\">";
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echo "<img src=\"/themes/{$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";
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echo "</tr>\n";
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}
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}
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?>
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</table>
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<p>
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<form action="diag_dhcp_leases.php" method="GET">
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309
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<input type="hidden" name="order" value="<?=$_GET['order'];?>">
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310
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<?php if ($_GET['all']): ?>
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<input type="hidden" name="all" value="0">
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<input type="submit" class="formbtn" value="Show active and static leases only">
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<?php else: ?>
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<input type="hidden" name="all" value="1">
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<input type="submit" class="formbtn" value="Show all configured leases">
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<?php endif; ?>
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</form>
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318
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<?php if($leases == 0): ?>
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<p><strong>No leases file found. Is the DHCP server active?</strong></p>
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320
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<?php endif; ?>
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321
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<meta http-equiv="refresh" content="120;url=<?php print $_SERVER['SCRIPT_NAME']; ?>">
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324
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<?php include("fend.inc"); ?>
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</body>
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326
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</html>
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