<?php

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'];

    $oids = snmp_walk($device, 'ipAddressIfIndex.ipv6', '-Ln -Osq', 'IP-MIB');
    $oids = str_replace('ipAddressIfIndex.ipv6.', '', $oids);
    $oids = str_replace('"', '', $oids);
    $oids = str_replace('IP-MIB::', '', $oids);
    $oids = trim($oids);

    foreach (explode("\n", $oids) as $data) {
        if ($data) {
            $data                    = trim($data);
            list($ipv6addr,$ifIndex) = explode(' ', $data);
            $oid   = '';
            $sep   = '';
            $adsep = '';
            unset($ipv6_address);
            $do = '0';
            foreach (explode(':', $ipv6addr) as $part) {
                $n            = hexdec($part);
                $oid          = "$oid"."$sep"."$n";
                $sep          = '.';
                $ipv6_address = $ipv6_address."$adsep".$part;
                $do++;
                if ($do == 2) {
                    $adsep = ':';
                    $do    = '0';
                }
                else {
                    $adsep = '';
                }
            }

            $ipv6_prefixlen = snmp_get($device, ".1.3.6.1.2.1.4.34.1.5.2.16.$oid", '', 'IP-MIB');
            $ipv6_prefixlen = explode('.', $ipv6_prefixlen);
            $ipv6_prefixlen = str_replace('"', '', end($ipv6_prefixlen));

            $ipv6_origin = snmp_get($device, ".1.3.6.1.2.1.4.34.1.6.2.16.$oid", '-Ovq', 'IP-MIB');

            discover_process_ipv6($valid, $ifIndex, $ipv6_address, $ipv6_prefixlen, $ipv6_origin, $device['context_name']);
        } //end if
    } //end foreach

    if (!$oids) {
        $oids = snmp_walk($device, 'ipv6AddrPfxLength', '-Ln -Osq -OnU', 'IPV6-MIB');
        $oids = str_replace('.1.3.6.1.2.1.55.1.8.1.2.', '', $oids);
        $oids = str_replace('"', '', $oids);
        $oids = trim($oids);

        foreach (explode("\n", $oids) as $data) {
            if ($data) {
                $data = trim($data);
                list($if_ipv6addr,$ipv6_prefixlen) = explode(' ', $data);
                list($ifIndex,$ipv6addr)           = explode('.', $if_ipv6addr, 2);
                $ipv6_address = snmp2ipv6($ipv6addr);
                $ipv6_origin  = snmp_get($device, "IPV6-MIB::ipv6AddrType.$if_ipv6addr", '-Ovq', 'IPV6-MIB');
                discover_process_ipv6($valid, $ifIndex, $ipv6_address, $ipv6_prefixlen, $ipv6_origin, $device['context_name']);
            } //end if
        } //end foreach
    } //end if

    $sql = "SELECT * FROM ipv6_addresses AS A, ports AS I WHERE I.device_id = '".$device['device_id']."' AND  A.port_id = I.port_id'";

    foreach (dbFetchRows($sql) as $row) {
        $full_address  = $row['ipv6_address'].'/'.$row['ipv6_prefixlen'];
        $port_id       = $row['port_id'];
        $valid_address = $full_address.'-'.$port_id;
        if (!$valid['ipv6'][$valid_address]) {
            echo '-';
            $query = dbDelete('ipv6_addresses', '`ipv6_address_id` = ?', array($row['ipv6_address_id']));
            if (!dbFetchCell('SELECT COUNT(*) FROM `ipv6_addresses` WHERE `ipv6_network_id` = ?', array($row['ipv6_network_id']))) {
                $query = dbDelete('ipv6_networks', '`ipv6_network_id` = ?', array($row['ipv6_network_id']));
            }
        }
    }

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