librenms/includes/discovery/ipv4-addresses.inc.php

<?php

echo 'IPv4 Addresses : ';
if( key_exists('vrf_lite_cisco', $device) && (count($device['vrf_lite_cisco'])!= 0) ){
    $vrfs_lite_cisco = $device['vrf_lite_cisco'];
}
else {  
    $vrfs_lite_cisco = array(array('context_name'=>null));
}
foreach ($vrfs_lite_cisco as $vrf) {
    $device['context_name']=$vrf['context_name'];

    $oids = trim(snmp_walk($device, 'ipAdEntIfIndex', '-Osq', 'IP-MIB'));
    $oids = str_replace('ipAdEntIfIndex.', '', $oids);
    foreach (explode("\n", $oids) as $data) {
        $data               = trim($data);
        list($oid,$ifIndex) = explode(' ', $data);
        $mask               = trim(snmp_get($device, "ipAdEntNetMask.$oid", '-Oqv', 'IP-MIB'));
        $addr               = Net_IPv4::parseAddress("$oid/$mask");
        $network            = $addr->network.'/'.$addr->bitmask;
        $cidr               = $addr->bitmask;

        if (dbFetchCell('SELECT COUNT(*) FROM `ports` WHERE device_id = ? AND `ifIndex` = ?', array($device['device_id'], $ifIndex)) != '0' && $oid != '0.0.0.0' && $oid != 'ipAdEntIfIndex') {
            $port_id = dbFetchCell('SELECT `port_id` FROM `ports` WHERE `device_id` = ? AND `ifIndex` = ?', array($device['device_id'], $ifIndex));

            if (dbFetchCell('SELECT COUNT(*) FROM `ipv4_networks` WHERE `ipv4_network` = ?', array($network)) < '1') {
                dbInsert(array('ipv4_network' => $network,'context_name' => $device['context_name']), 'ipv4_networks');
                // echo("Create Subnet $network\n");
                echo 'S';
            }
            else {
                //Update Context
                dbUpdate(array('context_name' => $device['context_name']), 'ipv4_networks', '`ipv4_network` = ?', array($network) );
                echo 's';
            }

            $ipv4_network_id = dbFetchCell('SELECT `ipv4_network_id` FROM `ipv4_networks` WHERE `ipv4_network` = ?', array($network));

            if (dbFetchCell('SELECT COUNT(*) FROM `ipv4_addresses` WHERE `ipv4_address` = ? AND `ipv4_prefixlen` = ? AND `port_id` = ? ', array($oid, $cidr, $port_id)) == '0') {
                dbInsert(array('ipv4_address' => $oid, 'ipv4_prefixlen' => $cidr, 'ipv4_network_id' => $ipv4_network_id, 'port_id' => $port_id, 'context_name' => $device['context_name']), 'ipv4_addresses');
                // echo("Added $oid/$cidr to $port_id ( $hostname $ifIndex )\n $i_query\n");
                echo '+';
            }
            else {
                //Update Context
                dbUpdate(array('context_name' => $device['context_name']), 'ipv4_addresses', 'ipv4_address` = ? AND `ipv4_prefixlen` = ? AND `port_id` = ?',array($oid, $cidr, $port_id) );
                echo '.';
            }

            $full_address            = "$oid/$cidr|$ifIndex";
            $valid_v4[$full_address] = 1;
        } 
        else {
            echo '!';
        }//end if
    }//end foreach

    $sql = "SELECT * FROM ipv4_addresses AS A, ports AS I WHERE I.device_id = '".$device['device_id']."' AND  A.port_id = I.port_id";
    foreach (dbFetchRows($sql) as $row) {
        $full_address = $row['ipv4_address'].'/'.$row['ipv4_prefixlen'].'|'.$row['ifIndex'];

        if (!$valid_v4[$full_address]) {
            echo '-';
            $query = dbDelete('ipv4_addresses', '`ipv4_address_id` = ?', array($row['ipv4_address_id']));
            if (!dbFetchCell('SELECT COUNT(*) FROM `ipv4_addresses` WHERE `ipv4_network_id` = ?', array($row['ipv4_network_id']))) {
                $query = dbDelete('ipv4_networks', '`ipv4_network_id` = ?', array($row['ipv4_network_id']));
            }
        }
    }

    echo "\n";
    unset($device['context_name']);
    unset($valid_v4);
}
unset($vrfs_c);