199 lines
9.0 KiB
PHP
199 lines
9.0 KiB
PHP
<?php
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/**
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* Observium
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*
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* This file is part of Observium.
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*
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* @package observium
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* @subpackage discovery
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* @copyright (C) 2006-2013 Adam Armstrong, (C) 2013-2022 Observium Limited
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*
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*/
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/*
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CISCO-CDP-MIB::cdpCacheAddressType.1.0 = INTEGER: ip(1)
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CISCO-CDP-MIB::cdpCacheAddress.1.0 = Hex-STRING: CD EB 52 C2
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CISCO-CDP-MIB::cdpCacheVersion.1.0 = STRING: 2007656304
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CISCO-CDP-MIB::cdpCacheDeviceId.1.0 = STRING: ASW10.SPN.WPA1.imdc.com
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CISCO-CDP-MIB::cdpCacheDevicePort.1.0 = STRING: GigabitEthernet1/27
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CISCO-CDP-MIB::cdpCachePlatform.1.0 = STRING: cisco WS-C4948-10GE
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CISCO-CDP-MIB::cdpCacheCapabilities.1.0 = Hex-STRING: 00 00 00 29
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CISCO-CDP-MIB::cdpCacheVTPMgmtDomain.1.0 = STRING: IMDC-1
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CISCO-CDP-MIB::cdpCacheNativeVLAN.1.0 = INTEGER: 0
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CISCO-CDP-MIB::cdpCacheDuplex.1.0 = INTEGER: unknown(1)
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CISCO-CDP-MIB::cdpCacheApplianceID.1.0 = Gauge32: 0
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CISCO-CDP-MIB::cdpCacheVlanID.1.0 = Gauge32: 0
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CISCO-CDP-MIB::cdpCachePowerConsumption.1.0 = Gauge32: 0 milliwatts
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CISCO-CDP-MIB::cdpCacheMTU.1.0 = Gauge32: 0
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CISCO-CDP-MIB::cdpCacheSysName.1.0 = STRING: ASW10.SPN.WPA1.imdc.com
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CISCO-CDP-MIB::cdpCacheSysObjectID.1.0 = OID: SNMPv2-SMI::zeroDotZero.0
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CISCO-CDP-MIB::cdpCachePrimaryMgmtAddrType.1.0 = INTEGER: ip(1)
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CISCO-CDP-MIB::cdpCachePrimaryMgmtAddr.1.0 = STRING: "205.235.82.194"
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CISCO-CDP-MIB::cdpCacheSecondaryMgmtAddrType.1.0 = INTEGER: 0
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CISCO-CDP-MIB::cdpCacheSecondaryMgmtAddr.1.0 = ""
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CISCO-CDP-MIB::cdpCachePhysLocation.1.0 = STRING:
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CISCO-CDP-MIB::cdpCacheLastChange.1.0 = Timeticks: (120) 0:00:01.20
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CISCO-CDP-MIB::cdpGlobalLastChange.0 = Timeticks: (600708689) 69 days, 12:38:06.89
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*/
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$cdp_flags = OBS_SNMP_ALL_MULTILINE | OBS_SNMP_DISPLAY_HINT; // disable hints
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//$cdp_flags = OBS_SNMP_ALL_NUMERIC_INDEX | OBS_SNMP_DISPLAY_HINT | OBS_SNMP_CONCAT;
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$cdp_array = snmpwalk_cache_twopart_oid($device, "cdpCache", [], "CISCO-CDP-MIB", NULL, $cdp_flags);
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// If we get timeout error and device has 'CISCO-FLASH-MIB', sleep and try re-walk
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if (snmp_status() === FALSE && is_device_mib($device, 'CISCO-FLASH-MIB') &&
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(snmp_error_code() === OBS_SNMP_ERROR_REQUEST_TIMEOUT || snmp_error_code() === OBS_SNMP_ERROR_BULK_REQUEST_TIMEOUT))
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{
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print_debug('Try to re-walk "CISCO-CDP-MIB"..');
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sleep(5); // Additional sleep, see comments in includes/discovery/storage/cisco-flash-mib-inc.php
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$cdp_array = snmpwalk_cache_twopart_oid($device, "cdpCache", $cdp_array, "CISCO-CDP-MIB", NULL, $cdp_flags);
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}
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print_debug_vars($cdp_array);
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if ($cdp_array) {
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// fetch sysUptime for correct last change
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// $device_sysUptime = timeticks_to_sec(snmp_get_oid($device, "sysUpTime.0", "SNMPv2-MIB"));
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// Force fetch cdpCacheAddress as HEX strings!
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$cdp_array = snmpwalk_cache_twopart_oid($device, "cdpCacheAddress", $cdp_array, "CISCO-CDP-MIB", NULL, OBS_SNMP_ALL_HEX);
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foreach ($cdp_array as $ifIndex => $port_neighbours) {
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$port = get_port_by_index_cache($device, $ifIndex);
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//$port = dbFetchRow("SELECT * FROM `ports` WHERE `device_id` = ? AND `ifIndex` = ?", array($device['device_id'], $ifIndex));
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foreach ($port_neighbours as $cdpCacheDeviceIndex => $cdp_entry) {
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// Init
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$remote_mac = NULL;
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$remote_hostname = '';
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// Remote hostname
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// NOTE. cdpCacheDeviceId have undocumented limit by 40 chars!
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if (preg_match('/^([A-F\d]{2}\s?){6}$/', $cdp_entry['cdpCacheDeviceId'])) {
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// HEX mac address
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// cdpCacheDeviceId.3.1 = "98 90 96 D1 59 5A "
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$remote_hostname = $cdp_entry['cdpCacheDeviceId'];
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$remote_mac = str_replace(' ', '', $cdp_entry['cdpCacheDeviceId']);
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} elseif (preg_match('/^01 (?<ip>([A-F\d]{2}\s?){4})$/', $cdp_entry['cdpCacheDeviceId'], $matches)) {
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// HEX ip address
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// cdpCacheDeviceId.5.2 = "01 90 7F 93 3E "
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$remote_hostname = hex2ip($matches['ip']);
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} else {
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$remote_hostname = snmp_hexstring($cdp_entry['cdpCacheDeviceId']);
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if (preg_match('/^(?:SEP|SIP|\w+\-)?([a-f\d]{12})$/i', $remote_hostname, $matches)) {
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// Meraki report mac instead hostname
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// Axis: axis-<mac>
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// Cisco IP Phone: SEP<mac>
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// SIP-<platform><mac>,
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$remote_hostname = $cdp_entry['cdpCacheDeviceId'];
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$remote_mac = $matches[1];
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} elseif (preg_match(OBS_PATTERN_NOPRINT, $remote_hostname)) {
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// Non-printable chars, seems as ID is not hostname, keep as is
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$tmp = preg_replace(OBS_PATTERN_NOPRINT, '', $remote_hostname);
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if (is_valid_hostname($tmp)) {
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print_debug("Probably valid hostname with broken chars? '".$cdp_entry['cdpCacheDeviceId']."' => '$tmp'");
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}
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$remote_hostname = $cdp_entry['cdpCacheDeviceId'];
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} else {
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list($remote_hostname) = explode('(', $remote_hostname); // Fix for Nexus CDP neighbors: <hostname>(serial number)
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}
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}
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$hostname_len = strlen($remote_hostname);
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// cdpCacheSysName
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if (isset($cdp_entry['cdpCacheSysName'])) {
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$cdp_entry['cdpCacheSysName'] = snmp_hexstring($cdp_entry['cdpCacheSysName']);
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$sysname_len = strlen($cdp_entry['cdpCacheSysName']);
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if (is_valid_hostname($cdp_entry['cdpCacheSysName']) && $sysname_len > $hostname_len) {
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$remote_hostname = $cdp_entry['cdpCacheSysName'];
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} elseif ($sysname_len && preg_match('/^[a-f\d]{12}$/i', $cdp_entry['cdpCacheDeviceId'])) {
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// DeviceId is mac, prefer sysName
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$remote_hostname = $cdp_entry['cdpCacheSysName'];
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}
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}
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// Remote address
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$remote_address = hex2ip($cdp_entry['cdpCacheAddress']);
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// Last change
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/* Derp. Do not use Last change from neighbour, it's not correct for us
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* (seems as changed uptime by remote host, not possible correct calculate unixtime)
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$last_change = timeticks_to_sec($cdp_entry['cdpCacheLastChange']);
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if ($last_change > 0)
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{
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$last_change = get_time() - $device_sysUptime + $last_change;
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}
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*/
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// Remote MAC on some devices
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$if = NULL;
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if (preg_match('/^([A-F\d]{2}\s?){6}$/', $cdp_entry['cdpCacheDevicePort'])) {
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$remote_mac = $cdp_entry['cdpCacheDevicePort'];
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} else {
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$cdp_entry['cdpCacheDevicePort'] = snmp_hexstring($cdp_entry['cdpCacheDevicePort']);
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if (preg_match('/^[a-f\d]{12}$/i', $cdp_entry['cdpCacheDevicePort'])) {
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$remote_mac = $cdp_entry['cdpCacheDevicePort'];
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} else {
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$if = $cdp_entry['cdpCacheDevicePort'];
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}
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}
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// Try find remote device and check if already cached
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$remote_device_id = get_autodiscovery_device_id($device, $remote_hostname, $remote_address, $remote_mac);
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if (is_null($remote_device_id) && // NULL - never cached in other rounds
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check_autodiscovery($remote_hostname, $remote_address)) { // Check all previous autodiscovery rounds
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// Neighbour never checked, try autodiscovery
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$remote_device_id = autodiscovery_device($remote_hostname, $remote_address, 'CDP', $cdp_entry['cdpCachePlatform'], $device, $port);
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}
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$remote_port_id = NULL;
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if ($remote_device_id) {
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//$if = $cdp_entry['cdpCacheDevicePort'];
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if (!is_null($if)) {
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$query = 'SELECT `port_id` FROM `ports` WHERE (`ifName` = ? OR `ifDescr` = ? OR `port_label_short` = ?) AND `device_id` = ? AND `deleted` = ?';
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$remote_port_id = dbFetchCell($query, array($if, $if, $if, $remote_device_id, 0));
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// Aruba devices can report ifAlias instead ifDescr
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if (!$remote_port_id && !isHexString($if)) {
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$query = 'SELECT `port_id` FROM `ports` WHERE `ifAlias` = ? AND `device_id` = ? AND `deleted` = ?';
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$remote_port_id = dbFetchCell($query, [ $if, $remote_device_id, 0 ]);
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}
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}
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if (!$remote_port_id) {
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if (!is_null($remote_mac)) {
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// By MAC
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$remote_port_id = get_port_id_by_mac($remote_device_id, $remote_mac);
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} elseif (!is_null($if)) {
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// Try by ifAlias
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$query = 'SELECT `port_id` FROM `ports` WHERE `ifAlias` = ? AND `device_id` = ? AND `deleted` = ?';
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$remote_port_id = dbFetchCell($query, array($if, $remote_device_id, 0));
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}
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if (!$remote_port_id) {
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// Try by IP
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$peer_where = generate_query_values_and($remote_device_id, 'device_id'); // Additional filter for include self IPs
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// Fetch all ports with peer IP and filter by UP
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if ($ids = get_entity_ids_ip_by_network('port', $remote_address, $peer_where))
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{
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$remote_port_id = $ids[0];
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//$port = get_port_by_id_cache($ids[0]);
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}
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}
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}
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}
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$neighbour = [
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'remote_port_id' => $remote_port_id,
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'remote_hostname' => $remote_hostname,
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'remote_port' => $cdp_entry['cdpCacheDevicePort'],
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'remote_platform' => $cdp_entry['cdpCachePlatform'],
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'remote_version' => $cdp_entry['cdpCacheVersion'],
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'remote_address' => $remote_address,
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//'last_change' => $last_change
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];
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discover_neighbour($port, 'cdp', $neighbour);
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}
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}
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}
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// EOF
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