mirror of
https://github.com/librenms/librenms.git
synced 2024-10-07 16:52:45 +00:00
83 lines
2.2 KiB
PHP
83 lines
2.2 KiB
PHP
<?php
|
|
//
|
|
// LibreNMS module to do device discovery by ARP table contents.
|
|
//
|
|
// Needs to be run after the ARP table discovery, because it uses the
|
|
// data gathered by the ARP table discovery module. Keeps a cache of
|
|
// seen hosts, and will not attempt re-discovery of the same IP (whether
|
|
// discovery failed or succeed) during the same discovery run.
|
|
//
|
|
// Copyright (c) 2012-2013 Gear Consulting Pty Ltd <http://libertysys.com.au/>
|
|
//
|
|
// Author: Paul Gear <librenms@libertysys.com.au>
|
|
// License: GPLv3
|
|
//
|
|
|
|
$hostname = $device['hostname'];
|
|
$deviceid = $device['device_id'];
|
|
|
|
// Find all IPv4 addresses in the MAC table that haven't been discovered on monitored devices.
|
|
$sql = '
|
|
SELECT *
|
|
FROM ipv4_mac as m, ports as i
|
|
WHERE m.port_id = i.port_id
|
|
AND i.device_id = ?
|
|
AND i.deleted = 0
|
|
AND NOT EXISTS (
|
|
SELECT * FROM ipv4_addresses a
|
|
WHERE a.ipv4_address = m.ipv4_address
|
|
)
|
|
GROUP BY ipv4_address
|
|
ORDER BY ipv4_address
|
|
';
|
|
|
|
// FIXME: Observium now uses ip_mac.ip_address in place of ipv4_mac.ipv4_address - why?
|
|
$names = array();
|
|
$ips = array();
|
|
|
|
foreach (dbFetchRows($sql, array($deviceid)) as $entry) {
|
|
global $config;
|
|
|
|
$ip = $entry['ipv4_address'];
|
|
$mac = $entry['mac_address'];
|
|
$if = $entry['port_id'];
|
|
$int = ifLabel($if);
|
|
$label = $int['label'];
|
|
|
|
// Even though match_network is done inside discover_new_device, we do it here
|
|
// as well in order to skip unnecessary reverse DNS lookups on discovered IPs.
|
|
if (match_network($config['autodiscovery']['nets-exclude'], $ip)) {
|
|
echo 'x';
|
|
continue;
|
|
}
|
|
|
|
if (!match_network($config['nets'], $ip)) {
|
|
echo 'i';
|
|
log_event("Ignored $ip", $deviceid, 'interface', $if);
|
|
continue;
|
|
}
|
|
|
|
// Attempt discovery of each IP only once per run.
|
|
if (object_is_cached('arp_discovery', $ip)) {
|
|
echo '.';
|
|
continue;
|
|
}
|
|
|
|
object_add_cache('arp_discovery', $ip);
|
|
|
|
$name = gethostbyaddr($ip);
|
|
echo '+';
|
|
$names[] = $name;
|
|
$ips[$name] = $ip;
|
|
}
|
|
|
|
echo "\n";
|
|
|
|
// Run device discovery on each of the devices we've detected so far.
|
|
foreach ($names as $name) {
|
|
$remote_device_id = discover_new_device($name, $device, 'ARP');
|
|
}
|
|
|
|
unset($names);
|
|
unset($ips);
|