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<?php
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/*
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* diag_arp.inc
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2004-2013 BSD Perimeter
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* Copyright (c) 2013-2016 Electric Sheep Fencing
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* Copyright (c) 2014-2021 Rubicon Communications, LLC (Netgate)
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* All rights reserved.
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*
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* originally based on 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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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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require_once("config.gui.inc");
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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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function _getHostName($mac, $ip) {
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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 {
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exec("host -W 1 " . escapeshellarg($ip), $output);
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if (preg_match('/.*pointer ([A-Za-z_0-9.-]+)\..*/', $output[0], $matches)) {
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if ($matches[1] <> $ip) {
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return $matches[1];
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}
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}
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}
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return "";
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}
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function prepare_ARP_table($json = false) {
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global $dhcpmac, $dhcpip;
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$leases = system_get_dhcpleases();
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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['lease'] as $value) {
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$dhcpmac[$value['mac']] = $value['hostname'];
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$dhcpip[$value['ip']] = $value['hostname'];
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}
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$arp_table = system_get_arp_table();
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$i = 0;
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// if list
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$ifdescrs = get_configured_interface_with_descr();
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foreach ($ifdescrs as $key => $interface) {
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$thisif = convert_friendly_interface_to_real_interface_name($key);
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if (!empty($thisif)) {
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$hwif[$thisif] = $interface;
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}
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}
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// Resolve hostnames and replace Z_ with "". The intention
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// is to sort the list by hostnames, alpha and then the non
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// resolvable addresses will appear last in the list.
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$dnsavailable=1;
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$dns = trim(_getHostName("", "8.8.8.8"));
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if ($dns == "") {
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$dns = trim(_getHostName("", "8.8.4.4"));
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if ($dns == "") {
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$dnsavailable = 0;
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}
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}
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foreach ($arp_table as &$entry) {
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// Add dnsresolve
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if ($dnsavailable && !empty($entry['mac-address'])) {
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$dns = trim(_getHostName($entry['mac-address'],
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$entry['ip-address']));
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} else {
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$dns="";
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}
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if (trim($dns)) {
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$entry['dnsresolve'] = "$dns";
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} else {
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$entry['dnsresolve'] = "Z_ ";
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}
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// Fix MAC address
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if (empty($entry['mac-address'])) {
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$mac = '(' . gettext("Incomplete") .')';
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$entry['mac-address'] = $mac;
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} else {
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$mac = trim($entry['mac-address']);
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$entry['mac-address'] = $mac;
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$mac_hi = strtoupper($mac[0] . $mac[1] .
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$mac[3] . $mac[4] . $mac[6] .
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$mac[7]);
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if (isset($mac_man[$mac_hi])) {
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$entry['mac-address'] .= ' <small>('.
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$mac_man[$mac_hi] .
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')</small>';
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}
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}
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// Fix expiration
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$status = '';
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if (!empty($entry['expires'])) {
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$status = sprintf(gettext(
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"Expires in %d seconds"),
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$entry['expires']);
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} else if (!empty($entry['permanent'])) {
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$status = gettext("Permanent");
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}
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$entry['expires'] = $status;
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// Fix dnsresolve
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$entry['dnsresolve'] = trim(str_replace("Z_ ", "", $entry['dnsresolve']));
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// Fix interface
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$entry['interface'] = $hwif[$entry['interface']];
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}
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// Sort the data alpha first
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$arp_table = msort($arp_table, "dnsresolve");
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if ($json) {
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$jstr = json_encode($arp_table);
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$jstr = str_replace("mac-address", "mac", $jstr);
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$jstr = str_replace("ip-address", "ip", $jstr);
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return $jstr;
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} else {
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return $arp_table;
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}
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}
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?>
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