# SNMP::Info # # Copyright (c) 2003-2012 Max Baker and SNMP::Info Developers # All rights reserved. # # Portions Copyright (c) 2002-2003, Regents of the University of California # All rights reserved. # # See COPYRIGHT at bottom package SNMP::Info; use warnings; use strict; use Exporter; use SNMP; use Carp; use Math::BigInt; use NetAddr::IP::Lite ':lower'; @SNMP::Info::ISA = qw/Exporter/; @SNMP::Info::EXPORT_OK = qw//; our ($VERSION, %FUNCS, %GLOBALS, %MIBS, %MUNGE, $AUTOLOAD, $INIT, $DEBUG, %SPEED_MAP, $NOSUCH, $BIGINT, $REPEATERS); $VERSION = '3.81'; =head1 NAME SNMP::Info - OO Interface to Network devices and MIBs through SNMP =head1 VERSION SNMP::Info - Version 3.81 =head1 AUTHOR SNMP::Info is maintained by team of Open Source authors headed by Eric Miller, Bill Fenner, Max Baker, Jeroen van Ingen and Oliver Gorwits. Please visit L for the most up-to-date list of developers. SNMP::Info was originally created at UCSC for the Netdisco project L by Max Baker. =head1 DEVICES SUPPORTED There are now generic classes for most types of device and so the authors recommend loading SNMP::Info with AutoSpecify, and then reporting to the mail list any missing functionality (such as neighbor discovery tables). =head1 SYNOPSIS use SNMP::Info; my $info = new SNMP::Info( # Auto Discover more specific Device Class AutoSpecify => 1, Debug => 1, # The rest is passed to SNMP::Session DestHost => 'router', Community => 'public', Version => 2 ) or die "Can't connect to device.\n"; my $err = $info->error(); die "SNMP Community or Version probably wrong connecting to device. $err\n" if defined $err; my $name = $info->name(); my $class = $info->class(); print "SNMP::Info is using this device class : $class\n"; # Find out the Duplex status for the ports my $interfaces = $info->interfaces(); my $i_duplex = $info->i_duplex(); # Get CDP Neighbor info my $c_if = $info->c_if(); my $c_ip = $info->c_ip(); my $c_port = $info->c_port(); # Print out data per port foreach my $iid (keys %$interfaces){ my $duplex = $i_duplex->{$iid}; # Print out physical port name, not snmp iid my $port = $interfaces->{$iid}; print "$port: "; print "$duplex duplex" if defined $duplex; # The CDP Table has table entries different than the interface tables. # So we use c_if to get the map from cdp table to interface table. my %c_map = reverse %$c_if; my $c_key = $c_map{$iid}; unless (defined $c_key) { print "\n\n"; next; } my $neighbor_ip = $c_ip->{$c_key}; my $neighbor_port = $c_port->{$c_key}; print " connected to $neighbor_ip / $neighbor_port\n" if defined $neighbor_ip; print "\n"; } =head1 SUPPORT Please direct all support, help, and bug requests to the snmp-info-users Mailing List at L. =head1 DESCRIPTION SNMP::Info gives an object oriented interface to information obtained through SNMP. This module is geared towards network devices. Subclasses exist for a number of network devices and common MIBs. The idea behind this module is to give a common interface to data from network devices, leaving the device-specific hacks behind the scenes in subclasses. In the SYNOPSIS example we fetch the name of all the ports on the device and the duplex setting for that port with two methods -- interfaces() and i_duplex(). The information may be coming from any number of MIB files and is very vendor specific. SNMP::Info provides you a common method for all supported devices. Adding support for your own device is easy, and takes little SNMP knowledge. The module is not limited to network devices. Any MIB or device can be given an objected oriented front-end by making a module that consists of a couple hashes. See EXTENDING SNMP::INFO. =head1 REQUIREMENTS =over =item 1. Net-SNMP To use this module, you must have Net-SNMP installed on your system. More specifically you need the Perl modules that come with it. DO NOT INSTALL SNMP:: or Net::SNMP from CPAN! The SNMP module is matched to an install of net-snmp, and must be installed from the net-snmp source tree. The Perl module C is found inside the net-snmp distribution. Go to the F directory of the distribution to install it, or run C<./configure --with-perl-modules> from the top directory of the net-snmp distribution. Net-SNMP can be found at http://net-snmp.sourceforge.net Version 5.3.2 or greater is recommended. Versions 5.0.1, 5.0301 and 5.0203 have issues with bulkwalk and are not supported. B: Some versions that come with certain versions of Redhat/Fedora don't have the Perl library installed. Uninstall the RPM and install by hand. =item 2. MIBS SNMP::Info operates on textual descriptors found in MIBs. If you are using SNMP::Info separate from Netdisco, download the Netdisco MIB package at L Make sure that your snmp.conf is updated to point to your MIB directory and that the MIBs are world-readable. =back =head1 DESIGN GOALS =over =item 1. Use of textual MIB leaf identifier and enumerated values =over =item * All values are retrieved via MIB Leaf node names For example SNMP::Info has an entry in its %GLOBALS hash for ``sysName'' instead of 1.3.6.1.2.1.1.5. =item * Data returned is in the enumerated value form. For Example instead of looking up 1.3.6.1.2.1.2.2.1.3 and getting back C<23> SNMP::Info will ask for C and will get back C. =back =item 2. SNMP::Info is easily extended to new devices You can create a new subclass for a device by providing four hashes : %GLOBALS, %MIBS, %FUNCS, and %MUNGE. Or you can override any existing methods from a parent class by making a short subroutine. See the section EXTENDING SNMP::INFO for more details. When you make a new subclass for a device, please be sure to send it back to the developers (via a github pull request or the mailing list) for inclusion in the next version. =back =head1 SUBCLASSES These are the subclasses that implement MIBs and support devices: Required MIBs not included in the install instructions above are noted here. =head2 MIB Subclasses These subclasses implement method to access one or more MIBs. These are not used directly, but rather inherited from device subclasses. For more info run C on any of the following module names. =over =item SNMP::Info::AdslLine SNMP Interface to the ADSL-LINE-MIB for ADSL interfaces. Requires the F, down loadable from Cisco. See documentation in L for details. =item SNMP::Info::Aggregate SNMP Interface to F C Aggregated Links See documentation in L for details. =item SNMP::Info::Airespace F and F. Inherited by devices based on the Airespace wireless platform. See documentation in L for details. =item SNMP::Info::AMAP F. Alcatel Mapping Adjacency Protocol (AMAP) Support. See documentation in L for details. =item SNMP::Info::Bridge F (RFC1286). F. Inherited by devices with Layer2 support. See documentation in L for details. =item SNMP::Info::CDP F. Cisco Discovery Protocol (CDP) Support. Inherited by Cisco, Enterasys, and HP devices. See documentation in L for details. =item SNMP::Info::CiscoAgg SNMP Interface to Cisco Aggregated Links See documentation in L for details. =item SNMP::Info::CiscoConfig F, F, and F. These OIDs facilitate the writing of configuration files. See documentation in L for details. =item SNMP::Info::CiscoPortSecurity F and F. See documentation in L for details. =item SNMP::Info::CiscoPower F. See documentation in L for details. =item SNMP::Info::CiscoQOS F. A collection of OIDs providing information about a Cisco device's QOS config. See documentation in L for details. =item SNMP::Info::CiscoRTT F. A collection of OIDs providing information about a Cisco device's RTT values. See documentation in L for details. =item SNMP::Info::CiscoStack F. See documentation in L for details. =item SNMP::Info::CiscoStats F, F, and F. Provides common interfaces for memory, cpu, and os statistics for Cisco devices. See documentation in L for details. =item SNMP::Info::CiscoStpExtensions F See documentation in L for details. =item SNMP::Info::CiscoVTP F, F, F See documentation in L for details. =item SNMP::Info::DocsisCM SNMP Interface for DOCSIS Cable Modems See documentation in L for details. =item SNMP::Info::DocsisHE SNMP Interface for DOCSIS CMTS See documentation in L for details. =item SNMP::Info::EDP Extreme Discovery Protocol. F See documentation in L for details. =item SNMP::Info::Entity F. Used for device info in Cisco and other vendors. See documentation in L for details. =item SNMP::Info::EtherLike F (RFC1398) - Some Layer3 devices implement this MIB, as well as some Aironet Layer 2 devices (non Cisco). See documentation in L for details. =item SNMP::Info::FDP Foundry (Brocade) Discovery Protocol. F See documentation in L for details. =item SNMP::Info::IEEE802_Bridge SNMP Interface to data available through the F See documentation in L for details. =item SNMP::Info::IEEE802dot11 F. A collection of OIDs providing information about standards based 802.11 wireless devices. See documentation in L for details. =item SNMP::Info::IEEE802dot3ad SNMP Interface to IEEE Aggregated Links. F See documentation in L for details. =item SNMP::Info::IPv6 SNMP Interface for obtaining configured IPv6 addresses and mapping IPv6 addresses to MAC addresses and interfaces, using information from F, F and/or F. See documentation in L for details. =item SNMP::Info::LLDP F, F, and F. Link Layer Discovery Protocol (LLDP) Support. See documentation in L for details. =item SNMP::Info::MAU F (RFC2668). Some Layer2 devices use this for extended Ethernet (Medium Attachment Unit) interface information. See documentation in L for details. =item SNMP::Info::MRO Method resolution introspection for SNMP::Info See documentation in L for details. =item SNMP::Info::NortelStack F, F. See documentation in L for details. =item SNMP::Info::PowerEthernet F See documentation in L for details. =item SNMP::Info::RapidCity F. Inherited by Avaya switches for duplex and VLAN information. See documentation in L for details. =item SNMP::Info::SONMP SynOptics Network Management Protocol (SONMP) F, F. Inherited by Avaya/Nortel/Bay/Synoptics switches and hubs. See documentation in L for details. =back =head2 Device Subclasses These subclasses inherit from one or more classes to provide a common interface to data obtainable from network devices. All the required MIB files are included in the netdisco-mib package. (See Above). =over 4 =item SNMP::Info::Layer1 Generic Layer1 Device subclass. See documentation in L for details. =over 4 =item SNMP::Info::Layer1::Allied Subclass for Allied Telesis Repeaters / Hubs. Requires F See documentation in L for details. =item SNMP::Info::Layer1::Asante Subclass for Asante 1012 Hubs. Requires F See documentation in L for details. =item SNMP::Info::Layer1::Bayhub Subclass for Nortel/Bay hubs. This includes System 5000, 100 series, 200 series, and probably more. See documentation in L for details. =item SNMP::Info::Layer1::Cyclades Subclass for Cyclades/Avocent terminal servers. See documentation in L for details. =item SNMP::Info::Layer1::S3000 Subclass for Bay/Synoptics hubs. This includes System 3000, 281X, and probably more. See documentation in L for details. =back =item SNMP::Info::Layer2 Generic Layer2 Device subclass. See documentation in L for details. =over =item SNMP::Info::Layer2::3Com Subclass for L2 3Com Switches. See documentation in L for details. =item SNMP::Info::Layer2::Adtran Subclass for Adtran devices. See documentation in L for details. =item SNMP::Info::Layer2::Aerohive Subclass for Aerohive / Extreme access points. See documentation in L for details. =item SNMP::Info::Layer2::Airespace Subclass for Cisco (Airespace) wireless controllers. See documentation in L for details. =item SNMP::Info::Layer2::Aironet Class for Cisco Aironet wireless devices that run IOS. See also L for Aironet devices that don't run IOS. See documentation in L for details. =item SNMP::Info::Layer2::Allied Allied Telesis switches. See documentation in L for details. =item SNMP::Info::Layer2::Atmedia Subclass for atmedia encryptors. See documentation in L for details. =item SNMP::Info::Layer2::Baystack Subclass for Avaya/Nortel/Bay Ethernet Switch/Baystack switches. This includes 303, 304, 350, 380, 410, 420, 425, 450, 460, 470 series, 2500 series, 4000 series, 5000 series, Business Ethernet Switch (BES), Business Policy Switch (BPS), VSP 7000 series, and probably others. See documentation in L for details. =item SNMP::Info::Layer2::C1900 Subclass for Cisco Catalyst 1900 and 1900c Devices running CatOS. See documentation in L for details. =item SNMP::Info::Layer2::C2900 Subclass for Cisco Catalyst 2900, 2950, 3500XL, and 3548 devices running IOS. See documentation in L for details. =item SNMP::Info::Layer2::Catalyst Subclass for Cisco Catalyst switches running CatOS. These switches usually report a model number that starts with C. Note that this class does not support everything that has the name Catalyst. See documentation in L for details. =item SNMP::Info::Layer2::Centillion Subclass for Nortel/Bay Centillion and 5000BH ATM switches. See documentation in L for details. =item SNMP::Info::Layer2::Cisco Generic Cisco subclass for layer 2 devices that are not yet supported in more specific subclasses and the base layer 2 Cisco class for other device specific layer 2 Cisco classes. See documentation in L for details. =item SNMP::Info::Layer2::CiscoSB Subclass for Cisco's "Small Business" product line, acquired from Linksys. This currently comprises the Sx300/500 line of switches. See documentation in L for details. =item SNMP::Info::Layer2::Exinda Subclass for Exinda / GFI Network Orchestrator traffic shapers. See documentation in L for details. =item SNMP::Info::Layer2::HP Subclass for more recent HP Procurve Switches. Requires F and F downloaded from HP. See documentation in L for details. =item SNMP::Info::Layer2::HP4000 Subclass for older HP Procurve Switches Requires F and F downloaded from HP. See documentation in L for details. =item SNMP::Info::Layer2::HPVC Subclass for HP Virtual Connect Switches See documentation in L for details. =item SNMP::Info::Layer2::Kentrox Class for Kentrox DataSMART DSU/CSU. See documentation in L for details. =item SNMP::Info::Layer2::N2270 Subclass for Nortel 2270 wireless switches. See documentation in L for details. =item SNMP::Info::Layer2::NAP222x Subclass for Nortel 222x series wireless access points. See documentation in L for details. =item SNMP::Info::Layer2::Netgear Subclass for Netgear switches See documentation in L for details. =item SNMP::Info::Layer2::Nexans Subclass for Nexans switches See documentation in L for details. =item SNMP::Info::Layer2::NWSS2300 SNMP Interface to Avaya (Trapeze) Wireless Controllers See documentation in L for details. =item SNMP::Info::Layer2::Orinoco Subclass for Orinoco/Proxim wireless access points. See documentation in L for details. =item SNMP::Info::Layer2::Trapeze SNMP Interface to Juniper (Trapeze) Wireless Controllers See documentation in L for details. =item SNMP::Info::Layer2::Sixnet SNMP Interface to Sixnet industrial switches See documentation in L for details. =item SNMP::Info::Layer2::Ubiquiti SNMP Interface to Ubiquiti Access Points and other devices See documentation in L for details. =item SNMP::Info::Layer2::ZyXEL_DSLAM Zyxel DSLAMs. Need I say more? See documentation in L for details. =back =item SNMP::Info::Layer3 Generic Layer3 and Layer2+3 Device subclass. See documentation in L for details. =over =item SNMP::Info::Layer3::Aironet Subclass for Cisco Aironet wireless access points (AP) not running IOS. These are usually older devices. Note L See documentation in L for details. =item SNMP::Info::Layer3::AlcatelLucent Alcatel-Lucent OmniSwitch Class. See documentation in L for details. =item SNMP::Info::Layer3::AlteonAD Subclass for Radware Alteon Series ADC switches and Nortel BladeCenter Layer2-3 GbE Switch Modules. See documentation in L for details. =item SNMP::Info::Layer3::Altiga See documentation in L for details. =item SNMP::Info::Layer3::Arista See documentation in L for details. =item SNMP::Info::Layer3::Aruba Subclass for Aruba wireless switches. See documentation in L for details. =item SNMP::Info::Layer3::ArubaCX SNMP Interface to L3 Devices running ArubaOS-CX See documentation in L for details. =item SNMP::Info::Layer3::BayRS Subclass for Avaya/Nortel/Bay Multiprotocol/BayRS routers. This includes BCN, BLN, ASN, ARN, AN, 2430, and 5430 routers. See documentation in L for details. =item SNMP::Info::Layer3::BlueCoatSG Subclass for BlueCoat SG series proxy devices. See documentation in L for details. =item SNMP::Info::Layer3::C3550 Subclass for Cisco Catalyst 3550,3540,3560 2/3 switches running IOS. See documentation in L for details. =item SNMP::Info::Layer3::C4000 This class covers Catalyst 4000s and 4500s. See documentation in L for details. =item SNMP::Info::Layer3::C6500 This class covers Catalyst 6500 series running CatOS or IOS, as well as Catalyst 2960, 2970, 3750 and 3850 series, including blade switches CBS30x0 and CBS31x0 series, all running IOS. See documentation in L for details. =item SNMP::Info::Layer3::CheckPoint Subclass for CheckPoint devices. See documentation in L for details. =item SNMP::Info::Layer3::Ciena Subclass for Ciena devices. See documentation in L for details. =item SNMP::Info::Layer3::Cisco This is a simple wrapper around layer 3 for IOS devices and the base layer 3 Cisco class for other device specific layer 3 Cisco classes. See documentation in L for details. =item SNMP::Info::Layer3::CiscoASA Subclass for Cisco Adaptive Security Appliances. See documentation in L for details. =item SNMP::Info::Layer3::CiscoFWSM Subclass for Cisco Firewall Services Modules. See documentation in L for details. =item SNMP::Info::Layer3::CiscoSwitch Base class for L3 Cisco switches. See documentation in L for details. =item SNMP::Info::Layer3::Contivity Subclass for Avaya/Nortel Contivity/VPN Routers. See documentation in L for details. =item SNMP::Info::Layer3::Cumulus Subclass for Cumulus Networks Routers. See documentation in L for details. =item SNMP::Info::Layer3::Dell Subclass for Dell PowerConnect switches. The IBM BladeCenter Gigabit Ethernet Switch Module and some Linksys switches also use this module based upon MIB support. See documentation in L for details. =item SNMP::Info::Layer3::DLink Subclass for DLink devices. See documentation in L for details. =item SNMP::Info::Layer3::Enterasys Subclass for Enterasys devices. See documentation in L for details. =item SNMP::Info::Layer3::ERX Subclass for Juniper ERX switches. See documentation in L for details. =item SNMP::Info::Layer3::Extreme Subclass for Extreme Networks switches. See documentation in L for details. =item SNMP::Info::Layer3::F5 Subclass for F5 devices. See documentation in L for details. =item SNMP::Info::Layer3::Force10 Subclass for Force10 devices. See documentation in L for details. =item SNMP::Info::Layer3::Fortinet Subclass for Fortinet devices. See documentation in L for details. =item SNMP::Info::Layer3::Foundry Subclass for Brocade (Foundry) Network devices. See documentation in L for details. =item SNMP::Info::Layer3::Genua Subclass for Genua security devices. See documentation in L for details. =item SNMP::Info::Layer3::H3C SNMP Interface to Layer 3 Devices, H3C & HP A-series. See documentation in L for details. =item SNMP::Info::Layer3::HP9300 Subclass for HP network devices which Foundry Networks was the Original Equipment Manufacturer (OEM) such as the HP ProCurve 9300 and 6300 series. See documentation in L for details. =item SNMP::Info::Layer3::Huawei SNMP Interface to Huawei Layer 3 switches and routers. See documentation in L for details. =item SNMP::Info::Layer3::IBMGbTor SNMP Interface to IBM Rackswitch (formerly Blade Network Technologies) network devices. Lenovo acquired these from IBM and is now selling them under the Lenovo brand. See documentation in L for details. =item SNMP::Info::Layer3::Juniper Subclass for Juniper devices. See documentation in L for details. =item SNMP::Info::Layer3::Lantronix Subclass for Lantronix devices. See documentation in L for details. =item SNMP::Info::Layer3::Lenovo Subclass for Lenovo switches running CNOS. See documentation in L for details. =item SNMP::Info::Layer3::Microsoft Subclass for Generic Microsoft Routers running Microsoft Windows OS. See documentation in L for details. =item SNMP::Info::Layer3::Mikrotik Subclass for Mikrotik devices running RouterOS. See documentation in L for details. =item SNMP::Info::Layer3::N1600 Subclass for Avaya/Nortel Ethernet Routing Switch 1600 series. See documentation in L for details. =item SNMP::Info::Layer3::NetSNMP Subclass for host systems running Net-SNMP. See documentation in L for details. =item SNMP::Info::Layer3::Netscreen Subclass for Juniper NetScreen. See documentation in L for details. =item SNMP::Info::Layer3::Nexus Subclass for Cisco Nexus devices running NX-OS. See documentation in L for details. =item SNMP::Info::Layer3::OneAccess Subclass for OneAccess routers. See documentation in L for details. =item SNMP::Info::Layer3::PacketFront Subclass for PacketFront DRG series CPE. See documentation in L for details. =item SNMP::Info::Layer3::PaloAlto Subclass for Palo Alto firewalls. See documentation in L for details. =item SNMP::Info::Layer3::Passport Subclass for Avaya/Nortel Ethernet Routing Switch/Passport 8000 series, Accelar, and VSP 9000 series switches. See documentation in L for details. =item SNMP::Info::Layer3::Pf Subclass for FreeBSD-Based Firewalls using Pf /Pf Sense See documentation in L for details. =item SNMP::Info::Layer3::Pica8 Subclass for Pica8 devices. See documentation in L for details. =item SNMP::Info::Layer3::Redlion Subclass for redlion routers. See documentation in L for details. =item SNMP::Info::Layer3::Scalance Subclass for Siemens Scalance devices. See documentation in L for details. =item SNMP::Info::Layer3::SonicWALL Subclass for generic SonicWALL devices. See documentation in L for details. =item SNMP::Info::Layer3::Steelfusion Subclass for Riverbed Steelfusion WAN optimization appliances. See documentation in L for details. =item SNMP::Info::Layer3::Steelhead Subclass for Riverbed Steelhead WAN optimization appliances. See documentation in L for details. =item SNMP::Info::Layer3::SteelheadEx Subclass for Riverbed SteelheadEx WAN optimization appliances. See documentation in L for details. =item SNMP::Info::Layer3::Sun Subclass for Generic Sun Routers running SunOS. See documentation in L for details. =item SNMP::Info::Layer3::Tasman Subclass for Avaya Secure Routers. See documentation in L for details. =item SNMP::Info::Layer3::Teltonika Subclass for Teltonika RUT9xx series routers. See documentation in L for details. =item SNMP::Info::Layer3::Timetra Alcatel-Lucent SR Class. See documentation in L for details. =item SNMP::Info::Layer3::VyOS Subclass for VyOS routers. See documentation in L for details. =item SNMP::Info::Layer3::VMware Subclass for VMware ESXi hosts. See documentation in L for details. =item SNMP::Info::Layer3::Whiterabbit Subclass for whiterabbit devices. See documentation in L for details. =back =back =over 4 =item SNMP::Info::Layer7 Generic Layer7 Devices. See documentation in L for details. =over 4 =item SNMP::Info::Layer7::APC Subclass for APC UPS devices. See documentation in L for details. =item SNMP::Info::Layer7::Arbor Subclass for Arbor appliances. See documentation in L for details. =item SNMP::Info::Layer7::CiscoIPS Subclass for Cisco IPS devices. See documentation in L for details. =item SNMP::Info::Layer7::Gigamon Subclass for Gigamon devices. See documentation in L for details. =item SNMP::Info::Layer7::Liebert Subclass for Liebert devices. See documentation in L for details. =item SNMP::Info::Layer7::Neoteris Subclass for Pulse Secure / Juniper SSL VPN appliances. See documentation in L for details. =item SNMP::Info::Layer7::Netscaler Subclass for Citrix Netscaler appliances. See documentation in L for details. =back =back =head1 Thanks Thanks for testing and coding help (in no particular order) to : Alexander Barthel, Andy Ford, Alexander Hartmaier, Andrew Herrick, Alex Kramarov, Bernhard Augenstein, Bradley Baetz, Brian Chow, Brian Wilson, Carlos Vicente, Dana Watanabe, David Pinkoski, David Sieborger, Douglas McKeown, Greg King, Ivan Auger, Jean-Philippe Luiggi, Jeroen van Ingen, Justin Hunter, Kent Hamilton, Matthew Tuttle, Michael Robbert, Mike Hunter, Nicolai Petri, Ralf Gross, Robert Kerr, Nick Nauwelaerts and people listed on the Netdisco README! =head1 USAGE =head2 Constructor =over =item new() Creates a new object and connects via SNMP::Session. my $info = new SNMP::Info( 'Debug' => 1, 'AutoSpecify' => 1, 'BigInt' => 1, 'BulkWalk' => 1, 'BulkRepeaters' => 20, 'IgnoreNetSNMPConf' => 1, 'LoopDetect' => 1, 'DestHost' => 'myrouter', 'Community' => 'public', 'Version' => 2, 'MibDirs' => ['dir1','dir2','dir3'], ) or die; SNMP::Info Specific Arguments : =over =item AutoSpecify Returns an object of a more specific device class (default 0, which means "off") =item BigInt Return Math::BigInt objects for 64 bit counters. Sets on a global scope, not object. (default 0, which means "off") =item BulkWalk Set to C<0> to turn off BULKWALK commands for SNMPv2 connections. Note that BULKWALK is turned off for Net-SNMP versions 5.1.x because of a bug. (default 1, which means "on") =item BulkRepeaters Set number of MaxRepeaters for BULKWALK operation. See C -> bulkwalk() for more info. (default 20) =item LoopDetect Detects looping during getnext table column walks by comparing IIDs for each instance. A loop is detected if the same IID is seen more than once and the walk is aborted. Note: This will not detect loops during a bulkwalk operation, Net-SNMP's internal bulkwalk function must detect the loop. Set to C<0> to turn off loop detection. (default 1, which means "on") =item IgnoreNetSNMPConf Net-SNMP version 5.0 and higher read configuration files, snmp.conf or snmp.local.conf, from /etc/snmp, /usr/share/snmp, /usr/lib(64)/snmp, or $HOME/.snmp and uses those settings to automatically parse MIB files, etc. Set to C<1> "on" to ignore Net-SNMP configuration files by overriding the C environmental variable during object initialization. Note: MibDirs must be defined or Net-SNMP will not be able to load MIBs and initialize the object. (default 0, which means "off") =item Debug Prints Lots of debugging messages. Pass 2 to print even more debugging messages. (default 0, which means "off") =item DebugSNMP Set $SNMP::debugging level for Net-SNMP. See F for more details. =item MibDirs Array ref to list of directories in which to look for MIBs. Note this will be in addition to the ones setup in snmp.conf at the system level. (default use net-snmp settings only) =item RetryNoSuch When using SNMP Version 1, try reading values even if they come back as "no such variable in this MIB". Set to false if so desired. This feature lets you read SNMPv2 data from an SNMP version 1 connection, and should probably be left on. (default 1, which means "on") =item Session SNMP::Session object to use instead of connecting on own. (default creates session automatically) =item Offline Causes SNMP::Info to avoid network activity and return data only from its cache. If you ask for something not in the cache, an error is thrown. See also the C and C methods. (default 0, which means "online") =item Cache Pass in a HashRef to prime the cache of retrieved data. Useful for creating an instance in C mode from a previously dumped cache. See also the C method to retrieve a cache after running actial queries. =item OTHER All other arguments are passed to SNMP::Session. See SNMP::Session for a list of other possible arguments. =back A Note about the wrong Community string or wrong SNMP Version: If a connection is using the wrong community string or the wrong SNMP version, the creation of the object will not fail. The device still answers the call on the SNMP port, but will not return information. Check the error() method after you create the device object to see if there was a problem in connecting. A note about SNMP Versions : Some older devices don't support SNMP version 2, and will not return anything when a connection under Version 2 is attempted. Some newer devices will support Version 1, but will not return all the data they might have if you had connected under Version 1. When trying to get info from a new device, you may have to try version 2 and then fallback to version 1. =cut sub new { my $proto = shift; my $class = ref($proto) || $proto; my %args = @_; my %sess_args = %args; my $new_obj = {}; bless $new_obj, $class; $new_obj->{class} = $class; # load references to all the subclass data structures { no strict 'refs'; ## no critic (ProhibitNoStrict ProhibitProlongedStrictureOverride) $new_obj->{init} = \${ $class . '::INIT' }; $new_obj->{mibs} = \%{ $class . '::MIBS' }; $new_obj->{globals} = \%{ $class . '::GLOBALS' }; $new_obj->{funcs} = \%{ $class . '::FUNCS' }; $new_obj->{munge} = \%{ $class . '::MUNGE' }; } # SNMP::Info specific args : if ( defined $args{Debug} ) { $new_obj->debug( $args{Debug} ); delete $sess_args{Debug}; } else { $new_obj->debug( defined $DEBUG ? $DEBUG : 0 ); } if ( defined $args{DebugSNMP} ) { $SNMP::debugging = $args{DebugSNMP}; delete $sess_args{DebugSNMP}; } my $auto_specific = 0; if ( defined $args{AutoSpecify} ) { $auto_specific = $args{AutoSpecify} || 0; delete $sess_args{AutoSpecify}; } if ( defined $args{BulkRepeaters} ) { $new_obj->{BulkRepeaters} = $args{BulkRepeaters}; delete $sess_args{BulkRepeaters}; } if ( defined $args{BulkWalk} ) { $new_obj->{BulkWalk} = $args{BulkWalk}; delete $sess_args{BulkWalk}; } if ( defined $args{LoopDetect} ) { $new_obj->{LoopDetect} = $args{LoopDetect}; delete $sess_args{LoopDetect}; } if ( defined $args{IgnoreNetSNMPConf} ) { $new_obj->{IgnoreNetSNMPConf} = $args{IgnoreNetSNMPConf} || 0; delete $sess_args{IgnoreNetSNMPConf}; } if ( defined $args{Offline} ) { $new_obj->{Offline} = $args{Offline} || 0; delete $sess_args{Offline}; } if ( defined $args{Cache} and ref {} eq ref $args{Cache} ) { $new_obj->{$_} = $args{Cache}->{$_} for keys %{$args{Cache}}; delete $sess_args{Cache}; } my $sess = undef; if ( defined $args{Session} ) { $sess = $args{Session}; delete $sess_args{Session}; } if ( defined $args{BigInt} ) { $BIGINT = $args{BigInt}; delete $sess_args{BigInt}; } if ( defined $args{MibDirs} ) { $new_obj->{mibdirs} = $args{MibDirs}; delete $sess_args{MibDirs}; } # For IPv6 hosts set transport if ( defined $sess_args{DestHost} ) { $sess_args{DestHost} = resolve_desthost($sess_args{DestHost}); } $new_obj->{nosuch} = $args{RetryNoSuch} || $NOSUCH; # Initialize mibs if not done my $init_ref = $new_obj->{init}; unless ( defined $$init_ref and $$init_ref ) { $new_obj->init(); $$init_ref = 1; } # Connects to device unless open session is provided. $sess = SNMP::Session->new( 'UseEnums' => 1, %sess_args, 'RetryNoSuch' => $new_obj->{nosuch} ) unless defined $sess; # No session object created unless ( defined $sess ) { $new_obj->error_throw("SNMP::Info::new() Failed to Create Session. "); return; } # Session object created but SNMP connection failed. my $sess_err = $sess->{ErrorStr} || ''; if ($sess_err) { $new_obj->error_throw( "SNMP::Info::new() Net-SNMP session creation failed. $sess_err"); return; } # Save Args for later $new_obj->{store} ||= {}; $new_obj->{sess} = $sess; $new_obj->{args} = \%args; $new_obj->{snmp_ver} = $sess->{Version} || $args{Version} || 2; $new_obj->{snmp_comm} = $sess->{Community} || $args{Community} || 'public'; $new_obj->{snmp_user} = $sess->{SecName} || $args{SecName} || 'initial'; my $info = $auto_specific ? $new_obj->specify() : $new_obj; if (defined $info and ($info->debug() > 1)) { require mro; print STDERR (ref $info) ." has resolution order: \n"; print STDERR " $_\n" foreach @{ mro::get_linear_isa( ref $info ) }; } return $info; } =item update() Replace the existing session with a new one with updated values, without re-identifying the device. The only supported changes are to Community or Context. Clears the object cache. This is useful, e.g., when a device supports multiple contexts (via changes to the Community string, or via the SNMPv3 Context parameter), but a context that you want to access does not support the objects (e.g., C, C) that we use to identify the device. =cut sub update { my $obj = shift; my %update_args = @_; my %sess_args = ( %{ $obj->{args} }, %update_args ); # silently only update "the right" args delete $sess_args{Debug}; delete $sess_args{DebugSNMP}; delete $sess_args{AutoSpecify}; delete $sess_args{BulkRepeaters}; delete $sess_args{BulkWalk}; delete $sess_args{LoopDetect}; delete $sess_args{IgnoreNetSNMPConf}; delete $sess_args{BigInt}; delete $sess_args{MibDirs}; my $sess = SNMP::Session->new( 'UseEnums' => 1, %sess_args, 'RetryNoSuch' => $obj->{nosuch} ); unless ( defined $sess ) { $obj->error_throw( "SNMP::Info::update() Failed to Create new Session. "); return; } # Session object created but SNMP connection failed. my $sess_err = $sess->{ErrorStr} || ''; if ($sess_err) { $obj->error_throw( "SNMP::Info::update() Net-SNMP session creation failed. $sess_err" ); return; } $obj->clear_cache(); return $obj->session($sess); } =back =head2 Data is Cached Methods and subroutines requesting data from a device will only load the data once, and then return cached versions of that data. Run $info->load_METHOD() where method is something like 'i_name' to reload data from a method. Run $info->clear_cache() to clear the cache to allow reload of both globals and table methods. The cache can be retrieved or set using the $info->cache() method. This works together with the C option. =head2 Object Scalar Methods These are for package related data, not directly supplied from SNMP. =over =item $info->clear_cache() Clears the cached data. This includes GLOBALS data and TABLE METHOD data. =cut sub clear_cache { my $self = shift; print "SNMP::Info::clear_cache() - Cache Cleared.\n" if $self->debug(); # Clear cached global values and table method flag for being cached foreach my $key ( keys %$self ) { next unless defined $key; next unless $key =~ /^_/; delete $self->{$key}; } # Clear store for tables return $self->store( {} ); } =item $info->debug(1) Returns current debug status, and optionally toggles debugging info for this object. =cut sub debug { my $self = shift; my $debug = shift; if ( defined $debug ) { $self->{debug} = $debug; } return $self->{debug}; } =item $info->offline([1|0]) Returns if offline mode is currently turned on for this object. Optionally sets the Offline parameter. =cut sub offline { my $self = shift; my $ol = shift; if ( defined $ol ) { $self->{Offline} = $ol; } return $self->{Offline}; } =item $info->cache([new_cache]) Returns a HashRef of all cached data in this object. There will be a C key for table data and then one key for each leaf. Optionally sets the cache parameters if passed a HashRef. =cut sub cache { my $self = shift; my $data = shift; if ( defined $data and ref {} eq ref $data ) { $self->{$_} = $data->{$_} for keys %$data; } my $cache = { store => $self->{store} }; foreach my $key ( keys %$self ) { next unless defined $key; next unless $key =~ /^_/; $cache->{$key} = $self->{$key}; } return $cache; } =item $info->bulkwalk([1|0]) Returns if bulkwalk is currently turned on for this object. Optionally sets the bulkwalk parameter. =cut sub bulkwalk { my $self = shift; my $bw = shift; if ( defined $bw ) { $self->{BulkWalk} = $bw; } return $self->{BulkWalk}; } =item $info->loopdetect([1|0]) Returns if loopdetect is currently turned on for this object. Optionally sets the loopdetect parameter. =cut sub loopdetect { my $self = shift; my $ld = shift; if ( defined $ld ) { $self->{LoopDetect} = $ld; } return $self->{LoopDetect}; } =item $info->device_type() Returns the Subclass name for this device. C is returned if no more specific class is available. First the device is checked for Layer 3 support and a specific subclass, then Layer 2 support and subclasses are checked. This means that Layer 2 / 3 switches and routers will fall under the SNMP::Info::Layer3 subclasses. If the device still can be connected to via SNMP::Info, then SNMP::Info is returned. =cut sub device_type { my $info = shift; my $objtype = "SNMP::Info"; my $layers = $info->layers() || '00000000'; my $desc = $info->description() || 'undef'; $desc =~ s/[\r\n\l]+/ /g; # Some devices don't implement sysServices, but do return a description. # In that case, log a warning and continue. if ( $layers eq '00000000' ) { if ($desc ne 'undef') { carp("Device doesn't implement sysServices but did return sysDescr. Might give unexpected results.\n") if $info->debug(); } else { # No sysServices, no sysDescr return; } } my $id = $info->id() || 'undef'; my $soid = $id; # Hash for generic fallback to a device class if unable to determine using # the sysDescr regex. my %l3sysoidmap = ( 9 => 'SNMP::Info::Layer3::CiscoSwitch', 11 => 'SNMP::Info::Layer2::HP', 18 => 'SNMP::Info::Layer3::BayRS', 42 => 'SNMP::Info::Layer3::Sun', 43 => 'SNMP::Info::Layer2::3Com', 45 => 'SNMP::Info::Layer2::Baystack', 96 => 'SNMP::Info::Layer3::Whiterabbit', 171 => 'SNMP::Info::Layer3::DLink', 244 => 'SNMP::Info::Layer3::Lantronix', 311 => 'SNMP::Info::Layer3::Microsoft', 664 => 'SNMP::Info::Layer2::Adtran', 674 => 'SNMP::Info::Layer3::Dell', 1588 => 'SNMP::Info::Layer3::Foundry', 1872 => 'SNMP::Info::Layer3::AlteonAD', 1890 => 'SNMP::Info::Layer3::Redlion', 1916 => 'SNMP::Info::Layer3::Extreme', 1991 => 'SNMP::Info::Layer3::Foundry', 2011 => 'SNMP::Info::Layer3::Huawei', 2021 => 'SNMP::Info::Layer3::NetSNMP', 2272 => 'SNMP::Info::Layer3::Passport', 2620 => 'SNMP::Info::Layer3::CheckPoint', 2636 => 'SNMP::Info::Layer3::Juniper', 2925 => 'SNMP::Info::Layer1::Cyclades', 3076 => 'SNMP::Info::Layer3::Altiga', 3224 => 'SNMP::Info::Layer3::Netscreen', 3375 => 'SNMP::Info::Layer3::F5', 3417 => 'SNMP::Info::Layer3::BlueCoatSG', 3717 => 'SNMP::Info::Layer3::Genua', 4413 => 'SNMP::Info::Layer2::Ubiquiti', 4526 => 'SNMP::Info::Layer2::Netgear', 4874 => 'SNMP::Info::Layer3::ERX', 5624 => 'SNMP::Info::Layer3::Enterasys', 6027 => 'SNMP::Info::Layer3::Force10', 6141 => 'SNMP::Info::Layer3::Ciena', 6486 => 'SNMP::Info::Layer3::AlcatelLucent', 6527 => 'SNMP::Info::Layer3::Timetra', 6876 => 'SNMP::Info::Layer3::VMware', 8072 => 'SNMP::Info::Layer3::NetSNMP', 9303 => 'SNMP::Info::Layer3::PacketFront', 10002 => 'SNMP::Info::Layer2::Ubiquiti', 10418 => 'SNMP::Info::Layer1::Cyclades', 12325 => 'SNMP::Info::Layer3::Pf', 12356 => 'SNMP::Info::Layer3::Fortinet', 13191 => 'SNMP::Info::Layer3::OneAccess', 14179 => 'SNMP::Info::Layer2::Airespace', 14525 => 'SNMP::Info::Layer2::Trapeze', 14823 => 'SNMP::Info::Layer3::Aruba', 14988 => 'SNMP::Info::Layer3::Mikrotik', 17163 => 'SNMP::Info::Layer3::Steelhead', 19046 => 'SNMP::Info::Layer3::Lenovo', 21091 => 'SNMP::Info::Layer2::Exinda', 25461 => 'SNMP::Info::Layer3::PaloAlto', 25506 => 'SNMP::Info::Layer3::H3C', 26543 => 'SNMP::Info::Layer3::IBMGbTor', 26928 => 'SNMP::Info::Layer2::Aerohive', 30065 => 'SNMP::Info::Layer3::Arista', 30803 => 'SNMP::Info::Layer3::VyOS', 35098 => 'SNMP::Info::Layer3::Pica8', 40310 => 'SNMP::Info::Layer3::Cumulus', 41112 => 'SNMP::Info::Layer2::Ubiquiti', 44641 => 'SNMP::Info::Layer3::VyOS', 47196 => 'SNMP::Info::Layer3::ArubaCX', 48690 => 'SNMP::Info::Layer3::Teltonika', ); my %l2sysoidmap = ( 9 => 'SNMP::Info::Layer2::Cisco', 11 => 'SNMP::Info::Layer2::HP', 43 => 'SNMP::Info::Layer2::3Com', 45 => 'SNMP::Info::Layer2::Baystack', 96 => 'SNMP::Info::Layer3::Whiterabbit', 171 => 'SNMP::Info::Layer3::DLink', 207 => 'SNMP::Info::Layer2::Allied', 266 => 'SNMP::Info::Layer2::Nexans', 664 => 'SNMP::Info::Layer2::Adtran', 674 => 'SNMP::Info::Layer3::Dell', 1872 => 'SNMP::Info::Layer3::AlteonAD', 1890 => 'SNMP::Info::Layer3::Redlion', 1916 => 'SNMP::Info::Layer3::Extreme', 1991 => 'SNMP::Info::Layer3::Foundry', 2011 => 'SNMP::Info::Layer3::Huawei', 2272 => 'SNMP::Info::Layer3::Passport', 2925 => 'SNMP::Info::Layer1::Cyclades', 3224 => 'SNMP::Info::Layer3::Netscreen', 3375 => 'SNMP::Info::Layer3::F5', 4526 => 'SNMP::Info::Layer2::Netgear', 5624 => 'SNMP::Info::Layer3::Enterasys', 6141 => 'SNMP::Info::Layer3::Ciena', 6486 => 'SNMP::Info::Layer3::AlcatelLucent', 9303 => 'SNMP::Info::Layer3::PacketFront', 10418 => 'SNMP::Info::Layer1::Cyclades', 11898 => 'SNMP::Info::Layer2::Orinoco', 13458 => 'SNMP::Info::Layer2::Atmedia', 14179 => 'SNMP::Info::Layer2::Airespace', 14525 => 'SNMP::Info::Layer2::Trapeze', 14823 => 'SNMP::Info::Layer3::Aruba', 17163 => 'SNMP::Info::Layer3::Steelhead', 20540 => 'SNMP::Info::Layer2::Sixnet', 21091 => 'SNMP::Info::Layer2::Exinda', 26543 => 'SNMP::Info::Layer3::IBMGbTor', 26928 => 'SNMP::Info::Layer2::Aerohive', 47196 => 'SNMP::Info::Layer3::ArubaCX', 48690 => 'SNMP::Info::Layer3::Teltonika', ); my %l1sysoidmap = ( 2925 => 'SNMP::Info::Layer1::Cyclades', 10418 => 'SNMP::Info::Layer1::Cyclades', ); my %l7sysoidmap = ( 318 => 'SNMP::Info::Layer7::APC', 476 => 'SNMP::Info::Layer7::Liebert', 5951 => 'SNMP::Info::Layer7::Netscaler', 9694 => 'SNMP::Info::Layer7::Arbor', 12532 => 'SNMP::Info::Layer7::Neoteris', 14525 => 'SNMP::Info::Layer2::Trapeze', 26866 => 'SNMP::Info::Layer7::Gigamon', ); # Get just the enterprise number for generic mapping $id = $1 if ( defined($id) && $id =~ /^\.1\.3\.6\.1\.4\.1\.(\d+)/ ); if ($info->debug()) { print "SNMP::Info $VERSION\n"; print "SNMP::Info::device_type() layers:$layers id:$id sysDescr:\"$desc\"\n"; } # Layer 3 Supported # (usually has layer2 as well, so we check for 3 first) if ( $info->has_layer(3) ) { $objtype = 'SNMP::Info::Layer3'; # Device Type Overrides return $objtype unless ( defined $desc and length($desc) ); $objtype = 'SNMP::Info::Layer3::C3550' if $desc =~ /(C3550|C3560)/; $objtype = 'SNMP::Info::Layer3::C4000' if $desc =~ /Catalyst 4[05]00/; $objtype = 'SNMP::Info::Layer3::Foundry' if $desc =~ /foundry/i; $objtype = 'SNMP::Info::Layer3::ERX' if $desc =~ /erx/i; # Aironet - older non-IOS $objtype = 'SNMP::Info::Layer3::Aironet' if ($desc =~ /Cisco/ and $desc =~ /\D(CAP340|AP340|CAP350|350|1200)\D/ ); $objtype = 'SNMP::Info::Layer3::Aironet' if ( $desc =~ /Aironet/ and $desc =~ /\D(AP4800)\D/ ); # Override voice gateway device (VG350) showing up as Aironet $objtype = 'SNMP::Info::Layer3::Cisco' if $desc =~ /VG350/; # Cat6k with older SUPs (hybrid CatOS/IOS?) $objtype = 'SNMP::Info::Layer3::C6500' if $desc =~ /(c6sup2|c6sup1)/; # Cat6k with Sup720, Sup720 or Sup2T (and Sup2 running native IOS?) $objtype = 'SNMP::Info::Layer3::C6500' if $desc =~ /(s72033_rp|s3223_rp|s32p3_rp|s222_rp|s2t54)/; # Next one untested. Reported working by DA $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /cisco/i and $desc =~ /3750/ ); # IOS 15.x on Catalyst 3850 $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /cisco/i and $desc =~ /CAT3K/ ); # Cisco 2970 $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /(C2970|C2960)/ ); # Cisco 3400 w/ Layer3 capable image $objtype = 'SNMP::Info::Layer3::C3550' if ( $desc =~ /(ME340x)/ ); # Various Cisco blade switches, CBS30x0 and CBS31x0 models $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /cisco/i and $desc =~ /CBS3[0-9A-Za-z]{3}/ ); # Cisco Nexus running NX-OS $objtype = 'SNMP::Info::Layer3::Nexus' if ( $desc =~ /^Cisco\s+NX-OS/ ); # HP, older ProCurve models (1600, 2400, 2424m, 4000, 8000) $objtype = 'SNMP::Info::Layer2::HP4000' if $desc =~ /\b(J4093A|J4110A|J4120A|J4121A|J4122A|J4122B)\b/; # HP, Foundry OEM $objtype = 'SNMP::Info::Layer3::HP9300' if $desc =~ /\b(J4874A|J4138A|J4139A|J4840A|J4841A)\b/; # Nortel ERS (Passport) 1600 Series < version 2.1 $objtype = 'SNMP::Info::Layer3::N1600' if $desc =~ /(Passport|Ethernet\s+Routing\s+Switch)-16/i; # ERS - BayStack Numbered $objtype = 'SNMP::Info::Layer2::Baystack' if ( $desc =~ /^(BayStack|Ethernet\s+Routing\s+Switch)\s[2345](\d){2,3}/i ); # Nortel Contivity $objtype = 'SNMP::Info::Layer3::Contivity' if $desc =~ /(\bCES\b|\bNVR\sV\d)/ and (!defined $id or !defined $l3sysoidmap{$id}); # SonicWALL $objtype = 'SNMP::Info::Layer3::SonicWALL' if $desc =~ /SonicWALL/i; # Allied Telesis Layer2 managed switches. They report they have L3 support $objtype = 'SNMP::Info::Layer2::Allied' if ( $desc =~ /Allied.*AT-80\d{2}\S*/i ); # Cisco ASA, newer versions which report layer 3 functionality # version >= 8.2 are known to do this $objtype = 'SNMP::Info::Layer3::CiscoASA' if ( $desc =~ /Cisco Adaptive Security Appliance/i ); # Cisco FTD includes an ASA running as lina process $objtype = 'SNMP::Info::Layer3::CiscoASA' if ( $desc =~ /Cisco Firepower Threat Defense/i ); # Cisco FWSM $objtype = 'SNMP::Info::Layer3::CiscoFWSM' if ( $desc =~ /Cisco Firewall Services Module/i ); # Cisco Small Business (300 500) series override # This is for enterprises(1).cisco(9).otherEnterprises(6).ciscosb(1) $objtype = 'SNMP::Info::Layer2::CiscoSB' if ( $soid =~ /^\.?1\.3\.6\.1\.4\.1\.9\.6\.1/ ); # Avaya Secure Router $objtype = 'SNMP::Info::Layer3::Tasman' if ( $desc =~ /^(avaya|nortel)\s+(SR|secure\srouter)\s+\d{4}/i ); # HP Virtual Connect blade switches $objtype = 'SNMP::Info::Layer2::HPVC' if ( $desc =~ /HP\sVC\s/ ); # Aironet - IOS # Starting with IOS 15, Aironet reports sysServices 6, even though # it still is the same layer2 access point. $objtype = 'SNMP::Info::Layer2::Aironet' if ($desc =~ /\b(C1100|C1130|C1140|AP1200|C350|C1200|C1240|C1250|C2700|C3700)\b/ and $desc =~ /\bIOS\b/ ); # Airespace (WLC) Module $objtype = 'SNMP::Info::Layer2::Airespace' if ( $desc =~ /^Cisco Controller$/ ); #Nortel 2270 $objtype = 'SNMP::Info::Layer2::N2270' if ( $desc =~ /Nortel\s+(Networks\s+)??WLAN\s+-\s+Security\s+Switch/ ); # Nortel (Trapeze) WSS 2300 Series $objtype = 'SNMP::Info::Layer2::NWSS2300' if ( $desc =~ /^(Nortel\s)??Wireless\sSecurity\sSwitch\s23[568][012]\b/); # Siemens Simatic Scalance # Scalance overwrites layers later, # so if we don't add it here (layer3) and at other # it would flip/flop between those $objtype = 'SNMP::Info::Layer3::Scalance' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.4329\.6\.1\.2/i ); # Aruba wireless switches (issue #403) $objtype = 'SNMP::Info::Layer3::Aruba' if ( $desc =~ /ArubaOS/ ); # Teltonika RUT9xx Series $objtype = 'SNMP::Info::Layer3::Teltonika' if ( $desc =~ /\bTeltonika.*RUT9\d{2}\b/); # Riverbed Steelfusion $objtype = 'SNMP::Info::Layer3::SteelheadEx' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.17163\.1\.51/i ); $objtype = 'SNMP::Info::Layer3::Steelfusion' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.17163\.1\.52/i ); # Whiterabbit Timing $objtype = 'SNMP::Info::Layer3::Whiterabbit' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.96\.100\.1000/i ); # Generic device classification based upon sysObjectID if ( ( $objtype eq 'SNMP::Info::Layer3' ) and ( defined($id) ) and ( exists( $l3sysoidmap{$id} ) ) ) { $objtype = $l3sysoidmap{$id}; } # Layer 2 Supported } elsif ( $info->has_layer(2) ) { $objtype = 'SNMP::Info::Layer2'; return $objtype unless ( defined $desc and $desc !~ /^\s*$/ ); # Device Type Overrides # Bay Hub (Needed here for layers override) $objtype = 'SNMP::Info::Layer1::Bayhub' if ( $desc =~ /\bNMM.*Agent/ ); $objtype = 'SNMP::Info::Layer1::Bayhub' if ( $desc =~ /\bBay\s*Stack.*Hub/i ); # Synoptics Hub (Needed here for layers override) # This will override Bay Hub only for specific devices supported # by this class $objtype = 'SNMP::Info::Layer1::S3000' if ( $desc =~ /\bNMM\s+(281|3000|3030)/i ); # Catalyst 1900 series override $objtype = 'SNMP::Info::Layer2::C1900' if ( $desc =~ /catalyst/i and $desc =~ /\D19\d{2}/ ); # Catalyst 2900 and 3500XL (IOS) series override $objtype = 'SNMP::Info::Layer2::C2900' if ( $desc =~ /(C2900XL|C2950|C3500XL|C2940|CGESM|CIGESM)/i ); # Catalyst WS-C series override 2926,4k,5k,6k in Hybrid $objtype = 'SNMP::Info::Layer2::Catalyst' if ( $desc =~ /WS-C\d{4}/ ); # Catalyst 3550 / 3548 Layer2 only switches # Cisco 3400 w/ MetroBase Image $objtype = 'SNMP::Info::Layer3::C3550' if ( $desc =~ /(C3550|ME340x)/ ); # Cisco blade switches, CBS30x0 and CBS31x0 models with L2 only $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /cisco/i and $desc =~ /CBS3[0-9A-Za-z]{3}/ ); # Cisco 2970 $objtype = 'SNMP::Info::Layer3::C6500' if ( $desc =~ /(C2970|C2960)/ ); # Cisco Small Business (300 500) series override # This is for enterprises(1).cisco(9).otherEnterprises(6).ciscosb(1) $objtype = 'SNMP::Info::Layer2::CiscoSB' if ( $soid =~ /^\.1\.3\.6\.1\.4\.1\.9\.6\.1/ ); # HP, older ProCurve models (1600, 2400, 2424m, 4000, 8000) $objtype = 'SNMP::Info::Layer2::HP4000' if $desc =~ /\b(J4093A|J4110A|J4120A|J4121A|J4122A|J4122B)\b/; # HP, Foundry OEM $objtype = 'SNMP::Info::Layer3::HP9300' if $desc =~ /\b(J4874A|J4138A|J4139A|J4840A|J4841A)\b/; # IBM BladeCenter 4-Port GB Ethernet Switch Module $objtype = 'SNMP::Info::Layer3::Dell' if ( $desc =~ /^IBM Gigabit Ethernet Switch Module$/ ); # Linksys 2024/2048 $objtype = 'SNMP::Info::Layer3::Dell' if ( $desc =~ /^(24|48)-Port 10\/100\/1000 Gigabit Switch (with |w\/)WebView$/ ); # Centillion ATM $objtype = 'SNMP::Info::Layer2::Centillion' if ( $desc =~ /MCP/ ); # BPS $objtype = 'SNMP::Info::Layer2::Baystack' if ( $desc =~ /Business\sPolicy\sSwitch/i ); # BayStack Numbered $objtype = 'SNMP::Info::Layer2::Baystack' if ( $desc =~ /^(BayStack|Ethernet\s+(Routing\s+)??Switch)\s[2345](\d){2,3}/i ); # Kentrox DataSMART DSU/CSU $objtype = 'SNMP::Info::Layer2::Kentrox' if ( $desc =~ /^DataSMART/i ); # Nortel Business Ethernet Switch $objtype = 'SNMP::Info::Layer2::Baystack' if ( $desc =~ /^Business Ethernet Switch\s[12]\d\d/i ); # Nortel AP 222X $objtype = 'SNMP::Info::Layer2::NAP222x' if ( $desc =~ /Access\s+Point\s+222/ ); # Orinoco $objtype = 'SNMP::Info::Layer2::Orinoco' if ( $desc =~ /(AP-\d{3}|WavePOINT)/ ); # Aironet - IOS $objtype = 'SNMP::Info::Layer2::Aironet' if ($desc =~ /\b(C1100|C1130|C1140|AP1200|C350|C1200|C1240|C1250)\b/ and $desc =~ /\bIOS\b/ ); # Aironet - non IOS $objtype = 'SNMP::Info::Layer3::Aironet' if ( $desc =~ /Cisco/ and $desc =~ /\D(BR500)\D/ ); # Airespace (WLC) Module $objtype = 'SNMP::Info::Layer2::Airespace' if ( $desc =~ /^Cisco Controller$/ ); #Nortel 2270 $objtype = 'SNMP::Info::Layer2::N2270' if ( $desc =~ /Nortel\s+(Networks\s+)??WLAN\s+-\s+Security\s+Switch/ ); # HP Virtual Connect blade switches $objtype = 'SNMP::Info::Layer2::HPVC' if ( $desc =~ /HP\sVC\s/ ); $objtype = 'SNMP::Info::Layer2::ZyXEL_DSLAM' if ( $desc =~ /8-port .DSL Module\(Annex .\)/i ); # Generic DOCSIS Cable Modem override # If sysDesc follows the DOCSIS standard $objtype = 'SNMP::Info::DocsisCM' if ( $desc =~ /<>/i); # Generic device classification based upon sysObjectID if ( ( $objtype eq 'SNMP::Info::Layer2' ) and ( defined($id) ) and ( exists( $l2sysoidmap{$id} ) ) ) { $objtype = $l2sysoidmap{$id}; } } elsif ( $info->has_layer(1) ) { $objtype = 'SNMP::Info::Layer1'; # Allied crap-o-hub $objtype = 'SNMP::Info::Layer1::Allied' if ( $desc =~ /allied/i ); $objtype = 'SNMP::Info::Layer1::Asante' if ( $desc =~ /asante/i ); # Bay Hub $objtype = 'SNMP::Info::Layer1::Bayhub' if ( $desc =~ /\bNMM.*Agent/ ); $objtype = 'SNMP::Info::Layer1::Bayhub' if ( $desc =~ /\bBay\s*Stack.*Hub/i ); # Synoptics Hub # This will override Bay Hub only for specific devices supported # by this class $objtype = 'SNMP::Info::Layer1::S3000' if ( $desc =~ /\bNMM\s+(281|3000|3030)/i ); # Generic device classification based upon sysObjectID if ( ( $objtype eq 'SNMP::Info::Layer1' ) and ( defined($id) ) and ( exists( $l1sysoidmap{$id} ) ) ) { $objtype = $l1sysoidmap{$id}; } } # These devices don't claim to have Layer1-3 but we like em anyways. else { $objtype = 'SNMP::Info::Layer2::ZyXEL_DSLAM' if ( $desc =~ /8-port .DSL Module\(Annex .\)/i ); # Aruba wireless switches $objtype = 'SNMP::Info::Layer3::Aruba' if ( $desc =~ /(ArubaOS|AirOS)/ ); # Alcatel-Lucent branded Aruba $objtype = 'SNMP::Info::Layer3::Aruba' if ( $desc =~ /^AOS-W/ ); # Cisco PIX $objtype = 'SNMP::Info::Layer3::Cisco' if ( $desc =~ /Cisco PIX Security Appliance/i ); # Cisco ASA, older version which doesn't report layer 3 functionality $objtype = 'SNMP::Info::Layer3::CiscoASA' if ( $desc =~ /Cisco Adaptive Security Appliance/i ); # HP Virtual Connect blade switches $objtype = 'SNMP::Info::Layer2::HPVC' if ( $desc =~ /HP\sVC\s/ ); # Nortel (Trapeze) WSS 2300 Series $objtype = 'SNMP::Info::Layer2::NWSS2300' if ( $desc =~ /^(Nortel\s)??Wireless\sSecurity\sSwitch\s23[568][012]\b/); # Cisco IPS, older version which doesn't report layer 3 functionality $objtype = 'SNMP::Info::Layer7::CiscoIPS' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.9\.1\.1545/i ); # Siemens Simatic Scalance # Scalance overwrites layers later, # so if we don't add it here (layer3) and at other # it would flip/flop between those $objtype = 'SNMP::Info::Layer3::Scalance' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.4329\.6\.1\.2/i ); # Whiterabbit Timing $objtype = 'SNMP::Info::Layer3::Whiterabbit' if ( $soid =~ /\.1\.3\.6\.1\.4\.1\.96\.100\.1000/i ); # Teltonika RUT9xx Series $objtype = 'SNMP::Info::Layer3::Teltonika' if ( $desc =~ /\bTeltonika.*RUT9\d{2}\b/); # Generic device classification based upon sysObjectID if ( defined($id) and $objtype eq 'SNMP::Info') { if ( defined $l3sysoidmap{$id} ) { $objtype = $l3sysoidmap{$id}; } elsif ( defined $l2sysoidmap{$id}) { $objtype = $l2sysoidmap{$id}; } elsif ( defined $l7sysoidmap{$id}) { $objtype = $l7sysoidmap{$id}; } elsif ($info->has_layer(7)) { $objtype = 'SNMP::Info::Layer7' } } } return $objtype; } =item $info->error(no_clear) Returns Error message if there is an error, or undef if there is not. Reading the error will clear the error unless you set the no_clear flag. =cut sub error { my $self = shift; my $no_clear = shift; my $err = $self->{error}; $self->{error} = undef unless defined $no_clear and $no_clear; return $err; } =item $info->has_layer(3) Returns non-zero if the device has the supplied layer in the OSI Model Returns if the device doesn't support the layers() call. =cut sub has_layer { my $self = shift; my $check_for = shift; my $layers = $self->layers(); return unless defined $layers; return unless length($layers); return substr( $layers, 8 - $check_for, 1 ); } =item $info->snmp_comm() Returns SNMP Community string used in connection. =cut sub snmp_comm { my $self = shift; if ( $self->{snmp_ver} == 3 ) { return $self->{snmp_user}; } else { return $self->{snmp_comm}; } } =item $info->snmp_ver() Returns SNMP Version used for this connection =cut sub snmp_ver { my $self = shift; return $self->{snmp_ver}; } =item $info->specify() Returns an object of a more-specific subclass. my $info = new SNMP::Info(...); # Returns more specific object type my $specific = $info->specify(); Usually this method is called internally from new(AutoSpecify => 1) See device_type() entry for how a subclass is chosen. =cut sub specify { my $self = shift; my $device_type = $self->device_type(); unless ( defined $device_type ) { $self->error_throw( "SNMP::Info::specify() - Could not get info from device"); return; } return $self if $device_type eq 'SNMP::Info'; # Load Subclass # By evaling a string the contents of device_type now becomes a bareword. eval "require $device_type;"; ## no critic if ($@) { croak "SNMP::Info::specify() Loading $device_type Failed. $@\n"; } my $args = $self->args(); my $session = $self->session(); my $sub_obj = $device_type->new( %$args, 'Session' => $session, 'AutoSpecify' => 0 ); unless ( defined $sub_obj ) { $self->error_throw( "SNMP::Info::specify() - Could not connect with new class ($device_type)" ); return $self; } $self->debug() and print "SNMP::Info::specify() - Changed Class to $device_type.\n"; return $sub_obj; } =item $info->cisco_comm_indexing() Returns 0. Is an overridable method used for vlan indexing for snmp calls on certain Cisco devices. See L =cut sub cisco_comm_indexing { return 0; } =back =head2 GLOBALS (Scalar Methods) These are methods to return scalar data from RFC1213. Some subset of these is probably available for any network device that speaks SNMP. =over =item $info->uptime() Uptime in hundredths of seconds since device became available. (C) =item $info->contact() (C) =item $info->name() (C) =item $info->location() (C) =item $info->layers() This returns a binary encoded string where each digit represents a layer of the OSI model served by the device. eg: 01000010 means layers 2 (physical) and 7 (Application) are served. Note: This string is 8 digits long. See $info->has_layer() (C) =item $info->ports() Number of interfaces available on this device. Not too useful as the number of SNMP interfaces usually does not correspond with the number of physical ports (C) =item $info->ipforwarding() The indication of whether the entity is acting as an IP gateway Returns either forwarding or not-forwarding (C) =back =head2 Table Methods Each of these methods returns a hash_reference to a hash keyed on the interface index in SNMP. Example : $info->interfaces() might return { '1.12' => 'FastEthernet/0', '2.15' => 'FastEthernet/1', '9.99' => 'FastEthernet/2' } The key is what you would see if you were to do an snmpwalk, and in some cases changes between reboots of the network device. =head2 Partial Table Fetches If you want to get only a part of an SNMP table or a single instance from the table and you know the IID for the part of the table that you want, you can specify it in the call: $local_routes = $info->ipr_route('192.168.0'); This will only fetch entries in the table that start with C<192.168.0>, which in this case are routes on the local network. Remember that you must supply the partial IID (a numeric OID). Partial table results are not cached. =head2 Interface Information =over =item $info->interfaces() This methods is overridden in each subclass to provide a mapping between the Interface Table Index (iid) and the physical port name. =item $info->if_ignore() Returns a reference to a hash where key values that exist are interfaces to ignore. Ignored interfaces are ones that are usually not physical ports or Virtual Lans (VLANs) such as the Loopback interface, or the CPU interface. =cut sub if_ignore { my %nothing; return \%nothing; } =item $info->bulkwalk_no() Returns 0. Is an overridable method used for turn off bulkwalk for the device class. =cut sub bulkwalk_no { return 0; } =item $info->i_index() Default SNMP IID to Interface index. (C) =item $info->i_description() Description of the interface. Usually a little longer single word name that is both human and machine friendly. Not always. (C) =item $info->i_type() Interface type, such as Vlan, Ethernet, Serial (C) =item $info->i_mtu() INTEGER. Interface MTU value. (C) =item $info->i_speed() Speed of the link, human format. See munge_speed() later in document for details. (C, C if necessary) =cut sub i_speed { my $info = shift; my $partial = shift; my $i_speed = $info->orig_i_speed($partial); my $i_speed_high = undef; foreach my $i ( keys %$i_speed ) { if ( $i_speed->{$i} eq "4294967295" ) { $i_speed_high = $info->i_speed_high($partial) unless defined($i_speed_high); $i_speed->{$i} = $i_speed_high->{$i} if ( $i_speed_high->{$i} ); } } return $i_speed; } =item $info->i_speed_raw() Speed of the link in bits per second without munging. If i_speed_high is available it will be used and multiplied by 1_000_000. (C, C if necessary) =cut sub i_speed_raw { my $info = shift; my $partial = shift; # remove the speed formating my $munge_i_speed = delete $info->{munge}{i_speed}; # also for highspeed interfaces e.g. TenGigabitEthernet my $munge_i_speed_high = delete $info->{munge}{i_speed_high}; my $i_speed_raw = $info->orig_i_speed($partial); my $i_speed_high = undef; foreach my $i ( keys %$i_speed_raw ) { if ( $i_speed_raw->{$i} eq "4294967295" ) { $i_speed_high = $info->i_speed_high($partial) unless defined($i_speed_high); $i_speed_raw->{$i} = ( $i_speed_high->{$i} * 1_000_000 ) if ( $i_speed_high->{$i} ); } } # restore the speed formating $info->{munge}{i_speed} = $munge_i_speed; $info->{munge}{i_speed_high} = $munge_i_speed_high; return $i_speed_raw; } =item $info->i_speed_high() Speed of a high-speed link, human format. See munge_highspeed() later in document for details. You should not need to call this directly, as i_speed() will call it if it needs to. (C) =item $info->i_mac() MAC address of the interface. Note this is just the MAC of the port, not anything connected to it. (C) =item $info->i_up() Link Status of the interface. Typical values are 'up' and 'down'. (C) =item $info->i_up_admin() Administrative status of the port. Typical values are 'enabled' and 'disabled'. (C) =item $info->i_lastchange() The value of C when this port last changed states (up,down). (C) =item $info->i_name() Interface Name field. Supported by a smaller subset of devices, this fields is often human set. (C) =item $info->i_alias() Interface Name field. For certain devices this is a more human friendly form of i_description(). For others it is a human set field like i_name(). (C) =back =head2 Interface Statistics =over =item $info->i_octet_in(), $info->i_octets_out(), $info->i_octet_in64(), $info->i_octets_out64() Bandwidth. Number of octets sent/received on the interface including framing characters. 64 bit version may not exist on all devices. NOTE: To manipulate 64 bit counters you need to use Math::BigInt, since the values are too large for a normal Perl scalar. Set the global $SNMP::Info::BIGINT to 1 , or pass the BigInt value to new() if you want SNMP::Info to do it for you. (C) (C) (C) (C) =item $info->i_errors_in(), $info->i_errors_out() Number of packets that contained an error preventing delivery. See C for more info. (C) (C) =item $info->i_pkts_ucast_in(), $info->i_pkts_ucast_out(), $info->i_pkts_ucast_in64(), $info->i_pkts_ucast_out64() Number of packets not sent to a multicast or broadcast address. 64 bit version may not exist on all devices. (C) (C) (C) (C) =item $info->i_pkts_nucast_in(), $info->i_pkts_nucast_out(), Number of packets sent to a multicast or broadcast address. These methods are deprecated by i_pkts_multi_in() and i_pkts_bcast_in() according to C. Actual device usage may vary. (C) (C) =item $info->i_pkts_multi_in() $info->i_pkts_multi_out(), $info->i_pkts_multi_in64(), $info->i_pkts_multi_out64() Number of packets sent to a multicast address. 64 bit version may not exist on all devices. (C) (C) (C) (C) =item $info->i_pkts_bcast_in() $info->i_pkts_bcast_out(), $info->i_pkts_bcast_in64() $info->i_pkts_bcast_out64() Number of packets sent to a broadcast address on an interface. 64 bit version may not exist on all devices. (C) (C) (C) (C) =item $info->i_discards_in() $info->i_discards_out() "The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space." (C) (C) (C) =item $info->i_bad_proto_in() "For packet-oriented interfaces, the number of packets received via the interface which were discarded because of an unknown or unsupported protocol. For character-oriented or fixed-length interfaces that support protocol multiplexing the number of transmission units received via the interface which were discarded because of an unknown or unsupported protocol. For any interface that does not support protocol multiplexing, this counter will always be 0." (C) =item $info->i_qlen_out() "The length of the output packet queue (in packets)." (C) =item $info->i_specific() See C for full description (C) =back =head2 IPv4 Address Table Each entry in this table is an IPv4 address in use on this device. Usually this is implemented in Layer3 Devices. These methods try the deprecated IPv4 address table C first due to its prevalence and will try the current C if it doesn't return any results. C results are filtered to only return IPv4 unicast addresses and modified to match the return format of the older table for backwards compatibility. See documentation in L for IPv6 Address Table. =over =item $info->ip_index() Maps the IPv4 addresses to the interface index (C) or filtered and index modified (C) =item $info->ip_table() Maps the Table to the IPv4 address (C) or address extracted from (C) =item $info->ip_netmask() Gives netmask setting for IPv4 table entry. (C) or netmask calculated from (C) =item $info->ip_broadcast() Gives the value of the least-significant bit in the IPv4 broadcast address either 1 or 0. (C), there is no equivalent from the C =back =head2 IP Routing Table =over =item $info->ipr_route() The route in question. A value of 0.0.0.0 is the default gateway route. (C) =item $info->ipr_if() The interface (IID) that the route is on. Use interfaces() to map. (C) =item $info->ipr_1() Primary routing metric for this route. (C) =item $info->ipr_2() If metrics are not used, they should be set to -1 (C) =item $info->ipr_3() (C) =item $info->ipr_4() (C) =item $info->ipr_5() (C) =item $info->ipr_dest() From RFC1213: "The IP address of the next hop of this route. (In the case of a route bound to an interface which is realized via a broadcast media, the value of this field is the agent's IP address on that interface.)" (C) =item $info->ipr_type() From RFC1213: other(1), -- none of the following invalid(2), -- an invalidated route -- route to directly direct(3), -- connected (sub-)network -- route to a non-local indirect(4) -- host/network/sub-network "The type of route. Note that the values direct(3) and indirect(4) refer to the notion of direct and indirect routing in the IP architecture. Setting this object to the value invalid(2) has the effect of invalidating the corresponding entry in the ipRouteTable object. That is, it effectively disassociates the destination identified with said entry from the route identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant ipRouteType object." (C) =item $info->ipr_proto() From RFC1213: other(1), -- none of the following -- non-protocol information, -- e.g., manually configured local(2), -- entries -- set via a network netmgmt(3), -- management protocol -- obtained via ICMP, icmp(4), -- e.g., Redirect -- the remaining values are -- all gateway routing -- protocols egp(5), ggp(6), hello(7), rip(8), is-is(9), es-is(10), ciscoIgrp(11), bbnSpfIgp(12), ospf(13), bgp(14) (C) =item $info->ipr_age() Seconds since route was last updated or validated. (C) =item $info->ipr_mask() Subnet Mask of route. 0.0.0.0 for default gateway. (C) =item $info->ipr_info() Reference to MIB definition specific to routing protocol. (C) =back =head2 Topology Information Based upon the manufacturer and software version devices may support some combination of Layer 2 topology protocol information. SNMP::Info supports querying Link Layer Discovery Protocol (LLDP), Cisco Discovery Protocol (CDP), SynOptics/Bay/Nortel/Avaya Network Management Protocol (SONMP), Foundry/Brocade Discovery Protocol (FDP), Extreme Discovery Protocol (EDP), and Alcatel Mapping Adjacency Protocol (AMAP). For protocol specific information and implementation: =over =item AMAP: See L for details. =item CDP: See L for details. =item EDP: See L for details. =item FDP: See L for details. =item LLDP: See L for details. =item SONMP: See L for details. =back =head3 Topology Capabilities =over =item $info->has_topo() Reports Layer 2 topology protocols which are supported and running on a device. Returns either a reference to an array of protocols, possible values being: C, C, C, C, C, C or C if no protocols are supported or running. =back =cut sub ip_index { my $self = shift; my $o_ip_idx = $self->old_ip_index(); return $o_ip_idx if ( ref {} eq ref $o_ip_idx and scalar keys %$o_ip_idx ); # Since callers may be using the old iid to get the IP, strip protocol # and length from the index my $n_ip_idx = $self->new_ip_index() || {}; my $n_ip_type = $self->new_ip_type() || {}; my %ip_index; foreach my $iid ( keys %$n_ip_idx ) { next unless $n_ip_type->{$iid} and $n_ip_type->{$iid} eq 'unicast'; my @parts = split( /\./, $iid ); my $type = shift(@parts); my $len = shift(@parts); next unless ( ( $type == 1 ) and ( $len == 4 ) ); my $new_iid = join( ".", @parts ); $ip_index{$new_iid} = $n_ip_idx->{$iid}; } return \%ip_index; } sub ip_table { my $self = shift; my $o_ip_table = $self->old_ip_table(); return $o_ip_table if ( ref {} eq ref $o_ip_table and scalar keys %$o_ip_table ); my $n_ip_idx = $self->new_ip_index() || {}; my $n_ip_type = $self->new_ip_type() || {}; my %ip_table; foreach my $iid ( keys %$n_ip_idx ) { next unless $n_ip_type->{$iid} and $n_ip_type->{$iid} eq 'unicast'; my @parts = split( /\./, $iid ); my $type = shift(@parts); my $len = shift(@parts); next unless ( ( $type == 1 ) and ( $len == 4 ) ); my $new_iid = join( ".", @parts ); $ip_table{$new_iid} = $new_iid; } return \%ip_table; } sub ip_netmask { my $self = shift; my $o_ip_mask = $self->old_ip_netmask(); return $o_ip_mask if ( ref {} eq ref $o_ip_mask and scalar keys %$o_ip_mask ); my $n_ip_pfx = $self->new_ip_prefix() || {}; my $n_ip_type = $self->new_ip_type() || {}; my %ip_netmask; foreach my $iid ( keys %$n_ip_pfx ) { next unless $n_ip_type->{$iid} and $n_ip_type->{$iid} eq 'unicast'; my @parts = split( /\./, $iid ); my $type = shift(@parts); my $len = shift(@parts); next unless ( ( $type == 1 ) and ( $len == 4 ) ); my $prefix = $n_ip_pfx->{$iid}; next if ( !$prefix || $prefix =~ /0\.0$/ ); if ( $prefix =~ /\.(\d+)$/ ) { $prefix = $1; } my $new_iid = join( ".", @parts ); my $mask = NetAddr::IP::Lite->new( $new_iid . '/' . $prefix )->mask() || undef; $ip_netmask{$new_iid} = $mask; } return \%ip_netmask; } sub has_topo { my $self = shift; my @topo_cap; push( @topo_cap, 'lldp' ) if ( $self->can('hasLLDP') && $self->hasLLDP() ); push( @topo_cap, 'cdp' ) if $self->can('hasCDP') && $self->hasCDP(); push( @topo_cap, 'sonmp' ) if $self->can('hasSONMP') && $self->hasSONMP(); push( @topo_cap, 'fdp' ) if $self->can('hasFDP') && $self->hasFDP(); push( @topo_cap, 'edp' ) if $self->can('hasEDP') && $self->hasEDP(); push( @topo_cap, 'amap' ) if $self->can('hasAMAP') && $self->hasAMAP(); if (@topo_cap) { return \@topo_cap; } else { return; } } sub _get_topo_data { my $self = shift; my $partial = shift; my $topo_cap = shift; my $method = shift || ''; return unless $method =~ /(ip|if|port|id|platform|cap)/; my %t_data; foreach my $proto (@$topo_cap) { next unless $proto =~ /(lldp|cdp|sonmp|fdp|edp|amap)/; my $method_name = "$proto" . "_$method"; my $cdp = $self->$method_name($partial) || {}; foreach my $iid ( keys %$cdp ) { my $ip = $cdp->{$iid}; next unless defined $ip; $t_data{$iid} = $ip; } } return \%t_data; } =head3 Common Topology Table Information The common topology table methods below will query the device for information from the specified topology protocols and return a single hash combining all information. As a result, there may be identical topology information returned from the two protocols causing duplicate entries. It is the calling program's responsibility to identify any duplicate entries and remove duplicates if necessary. If it is necessary to understand which protocol provided the information, utilize the protocol specific methods directly rather than the generic methods. The methods support partial table fetches by providing a partial as the first argument. If a reference to an array is provided as the second argument, those protocols will be queried for information. The supported array values are: C, C, C, C, C, C. If nothing is passed in as the second argument, the methods will call has_topo() to determine supported and running topology protocols on the device. =over =item $info->c_ip(partial, topology_protocol_arrayref) Returns reference to hash. Key: iid, Value: remote IPv4 address If multiple entries exist with the same local port, c_if(), with the same IPv4 address, c_ip(), it may be a duplicate entry. If multiple entries exist with the same local port, c_if(), with different IPv4 addresses, c_ip(), there is either a device in between two or more devices utilizing a different topology protocol or multiple devices which are not directly connected. Use the protocol specific methods to dig deeper. =cut sub c_ip { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'ip'); } =item $info->c_if(partial, topology_protocol_arrayref) Returns reference to hash. Key: iid, Value: local device port (interfaces) =cut sub c_if { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'if'); } =item $info->c_port(partial, topology_protocol_arrayref) Returns reference to hash. Key: iid, Value: remote port (interfaces) =cut sub c_port { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'port'); } =item $info->c_id(partial, topology_protocol_arrayref) Returns reference to hash. Key: iid, Value: string value used to identify the chassis component associated with the remote system. Note: SONMP does not return this information. =cut sub c_id { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'id'); } =item $info->c_platform(partial, topology_protocol_arrayref) Returns reference to hash. Key: iid, Value: Remote Device Type Note: EDP does not provide this information. LLDP uses (C) or C as the closest match. =cut sub c_platform { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'platform'); } =item $info->c_cap(partial, topology_protocol_arrayref) Returns reference to hash of arrays. Key: iid, Value: Array of capabilities supported by the device. See the specific protocol class for string values which could be elements within the array. Note: Only CDP and LLDP support this method. =cut sub c_cap { my $self = shift; my $partial = shift; my $topo_cap = shift; # Default to old behavior if not called with topo_cap if ( !$topo_cap ) { my $topo_test = $self->has_topo(); if ($topo_test) { $topo_cap = $topo_test; } else { return; } } return _get_topo_data ($self, $partial, $topo_cap, 'cap'); } =back =head1 SETTING DATA VIA SNMP This section explains how to use SNMP::Info to do SNMP Set operations. =over =item $info->set_METHOD($value) Sets the global METHOD to value. Assumes that iid is .0 Returns if failed, or the return value from SNMP::Session::set() (snmp_errno) $info->set_location("Here!"); =item $info->set_METHOD($value,$iid) Table Methods. Set iid of method to value. Returns if failed, or the return value from SNMP::Session::set() (snmp_errno) # Disable a port administratively my %if_map = reverse %{$info->interfaces()} $info->set_i_up_admin('down', $if_map{'FastEthernet0/0'}) or die "Couldn't disable the port. ",$info->error(1); =back NOTE: You must be connected to your device with a C community string in order for set operations to work. NOTE: This will only set data listed in %FUNCS and %GLOBALS. For data acquired from overridden methods (subroutines) specific set_METHOD() subroutines will need to be added if they haven't been already. =head1 Quiet Mode SNMP::Info will not chirp anything to STDOUT unless there is a serious error (in which case it will probably die). To get lots of debug info, set the Debug flag when calling new() or call $info->debug(1); When calling a method check the return value. If the return value is undef then check $info->error() Beware, calling $info->error() clears the error. my $name = $info->name() or die "Couldn't get sysName!" . $name->error(); =head1 EXTENDING SNMP::INFO To support a new class (vendor or platform) of device, add a Perl package with the data structures and methods listed below. If this seems a little scary, then the SNMP::Info developers are usually happy to accept the SNMP data from your device and make an attempt at the class themselves. Usually a "beta" release will go to CPAN for you to verify the implementation. =head2 Gathering MIB data for SNMP::Info Developers The preference is to open a pull request in the github project. This allows all developers to have visibility into the request. Please include pointers to the applicable platform MIBs. For development we will need an C of the device. There is a tool now included in the SNMP::Info distribution to help with this task, although you'll most likely need to download the distribution from CPAN as it's included in the "C" directory. The utility is named C. Run it with a command line like: ./make_snmpdata.pl -c community -i -d device_ip \ -m /home/netdisco-mibs/rfc:/home/netdisco-mibs/net-snmp:/home/netdisco-mibs/dir3 \ SNMPv2-MIB IF-MIB EtherLike-MIB BRIDGE-MIB Q-BRIDGE-MIB ENTITY-MIB \ POWER-ETHERNET-MIB IPV6-MIB LLDP-MIB DEVICE-SPECIFIC-MIB-NAME(s) > output.txt This will print to the file every MIB entry with data in a format that the developers can use to emulate read operations without needing access to the device. Preference would be to mask any sensitive data in the output, zip the file, and attach it to the github pull request. However, if you do not feel comfortable uploading the output to the tracker you could e-mail it to the developer that has claimed the ticket. =head2 Data Structures required in new Subclass A class inheriting this class must implement these data structures : =over =item $INIT Used to flag if the MIBs have been loaded yet. =cut $INIT = 0; =item %GLOBALS Contains a hash in the form ( method_name => SNMP MIB leaf name ) These are scalar values such as name, uptime, etc. To resolve MIB leaf name conflicts between private MIBs, you may prefix the leaf name with the MIB replacing each - (dash) and : (colon) with an _ (underscore). For example, ALTEON_TIGON_SWITCH_MIB__agSoftwareVersion would be used as the hash value instead of the net-snmp notation ALTEON-TIGON-SWITCH-MIB::agSoftwareVersion. When choosing the name for the methods, be aware that other new Sub Modules might inherit this one to get it's features. Try to choose a prefix for methods that will give it's own name space inside the SNMP::Info methods. =cut %GLOBALS = ( # from SNMPv2-MIB 'id' => 'sysObjectID', 'description' => 'sysDescr', 'uptime' => 'sysUpTime', 'contact' => 'sysContact', 'name' => 'sysName', 'location' => 'sysLocation', 'layers' => 'sysServices', # IF-MIB 'ports' => 'ifNumber', # IP-MIB 'ipforwarding' => 'ipForwarding', ); =item %FUNCS Contains a hash in the form ( method_name => SNMP MIB leaf name) These are table entries, such as the C To resolve MIB leaf name conflicts between private MIBs, you may prefix the leaf name with the MIB replacing each - (dash) and : (colon) with an _ (underscore). For example, ALTEON_TS_PHYSICAL_MIB__agPortCurCfgPortName would be used as the hash value instead of the net-snmp notation ALTEON-TS-PHYSICAL-MIB::agPortCurCfgPortName. =cut %FUNCS = ( # IF-MIB::IfEntry 'interfaces' => 'ifIndex', # IF-MIB::IfXEntry 'i_name' => 'ifName', # IF-MIB::IfEntry 'i_index' => 'ifIndex', 'i_description' => 'ifDescr', 'i_type' => 'ifType', 'i_mtu' => 'ifMtu', 'i_speed' => 'ifSpeed', 'i_mac' => 'ifPhysAddress', 'i_up_admin' => 'ifAdminStatus', 'i_up' => 'ifOperStatus', 'i_lastchange' => 'ifLastChange', 'i_octet_in' => 'ifInOctets', 'i_pkts_ucast_in' => 'ifInUcastPkts', 'i_pkts_nucast_in' => 'ifInNUcastPkts', 'i_discards_in' => 'ifInDiscards', 'i_errors_in' => 'ifInErrors', 'i_bad_proto_in' => 'ifInUnknownProtos', 'i_octet_out' => 'ifOutOctets', 'i_pkts_ucast_out' => 'ifOutUcastPkts', 'i_pkts_nucast_out' => 'ifOutNUcastPkts', 'i_discards_out' => 'ifOutDiscards', 'i_errors_out' => 'ifOutErrors', 'i_qlen_out' => 'ifOutQLen', 'i_specific' => 'ifSpecific', # IF-MIB::IfStackTable 'i_stack_status' => 'ifStackStatus', # IP-MIB::ipAddrTable (deprecated IPv4 address table) 'old_ip_index' => 'ipAdEntIfIndex', 'old_ip_table' => 'ipAdEntAddr', 'old_ip_netmask' => 'ipAdEntNetMask', 'ip_broadcast' => 'ipAdEntBcastAddr', # IP-MIB::ipAddressTable 'new_ip_index' => 'ipAddressIfIndex', 'new_ip_prefix' => 'ipAddressPrefix', 'new_ip_type' => 'ipAddressType', # IF-MIB::ifXTable - Extension Table 'i_speed_high' => 'ifHighSpeed', 'i_pkts_multi_in' => 'ifInMulticastPkts', 'i_pkts_multi_out' => 'ifOutMulticastPkts', 'i_pkts_bcast_in' => 'ifInBroadcastPkts', 'i_pkts_bcast_out' => 'ifOutBroadcastPkts', 'i_octet_in64' => 'ifHCInOctets', 'i_octet_out64' => 'ifHCOutOctets', 'i_pkts_ucast_in64' => 'ifHCInUcastPkts', 'i_pkts_ucast_out64' => 'ifHCOutUcastPkts', 'i_pkts_multi_in64' => 'ifHCInMulticastPkts', 'i_pkts_multi_out64' => 'ifHCOutMulticastPkts', 'i_pkts_bcast_in64' => 'ifHCInBroadcastPkts', 'i_pkts_bcast_out64' => 'ifHCOutBroadcastPkts', 'i_alias' => 'ifAlias', # RFC-1213::ipRoute (deprecated Table IP Routing Table) 'ipr_route' => 'ipRouteDest', 'ipr_if' => 'ipRouteIfIndex', 'ipr_1' => 'ipRouteMetric1', 'ipr_2' => 'ipRouteMetric2', 'ipr_3' => 'ipRouteMetric3', 'ipr_4' => 'ipRouteMetric4', 'ipr_5' => 'ipRouteMetric5', 'ipr_dest' => 'ipRouteNextHop', 'ipr_type' => 'ipRouteType', 'ipr_proto' => 'ipRouteProto', 'ipr_age' => 'ipRouteAge', 'ipr_mask' => 'ipRouteMask', 'ipr_info' => 'ipRouteInfo', ); =item %MIBS A list of each mib needed. ('MIB-NAME' => 'itemToTestForPresence') The value for each entry should be a MIB object to check for to make sure that the MIB is present and has loaded correctly. $info->init() will throw an exception if a MIB does not load. =cut %MIBS = ( # Include these here for cases where the Net-SNMP default MIB list has # been overridden during the compilation of the local Net-SNMP library. # These cover the globals and funcs defined in this file. 'SNMPv2-MIB' => 'sysObjectID', # (#325) 'RFC1213-MIB' => 'ipRouteIfIndex', 'IP-MIB' => 'ipAdEntAddr', 'IF-MIB' => 'ifIndex', ); =item %MUNGE A map between method calls (from %FUNCS or %GLOBALS) and subroutine methods. The subroutine called will be passed the data as it gets it from SNMP and it should return that same data in a more human friendly format. Sample %MUNGE: (my_ip => \&munge_ip, my_mac => \&munge_mac, my_layers => \&munge_dec2bin ) =cut %MUNGE = ( 'ip' => \&munge_ip, 'mac' => \&munge_mac, 'i_mac' => \&munge_mac, 'layers' => \&munge_dec2bin, 'i_speed' => \&munge_speed, 'i_speed_high' => \&munge_highspeed, 'i_octet_in64' => \&munge_counter64, 'i_octet_out64' => \&munge_counter64, 'i_pkts_ucast_in64' => \&munge_counter64, 'i_pkts_ucast_out64' => \&munge_counter64, 'i_pkts_mutli_in64' => \&munge_counter64, 'i_pkts_multi_out64' => \&munge_counter64, 'i_pkts_bcast_in64' => \&munge_counter64, 'i_pkts_bcast_out64' => \&munge_counter64, 'i_up' => \&munge_i_up, ); =back =head2 Sample Subclass Let's make a sample Layer 2 Device subclass. This class will inherit the Cisco Vlan module as an example. ----------------------- snip -------------------------------- # SNMP::Info::Layer2::Sample package SNMP::Info::Layer2::Sample; $VERSION = 0.1; use strict; use warnings; use Exporter; use SNMP::Info::Layer2; use SNMP::Info::CiscoVTP; @SNMP::Info::Layer2::Sample::ISA = qw/SNMP::Info::Layer2 SNMP::Info::CiscoVTP Exporter/; @SNMP::Info::Layer2::Sample::EXPORT_OK = qw//; our ($VERSION, %FUNCS, %GLOBALS, %MIBS, %MUNGE, $AUTOLOAD, $INIT, $DEBUG); %MIBS = (%SNMP::Info::Layer2::MIBS, %SNMP::Info::CiscoVTP::MIBS, 'SUPER-DOOPER-MIB' => 'supermibobject', ); %GLOBALS = (%SNMP::Info::Layer2::GLOBALS, %SNMP::Info::CiscoVTP::GLOBALS, 'name' => 'supermib_supername', 'favorite_color' => 'supermib_fav_color_object', 'favorite_movie' => 'supermib_fav_movie_val', ); %FUNCS = (%SNMP::Info::Layer2::FUNCS, %SNMP::Info::CiscoVTP::FUNCS, # Super Dooper MIB - Super Hero Table 'super_hero_index' => 'SuperHeroIfIndex', 'super_hero_name' => 'SuperHeroIfName', 'super_hero_powers' => 'SuperHeroIfPowers', ); %MUNGE = (%SNMP::Info::Layer2::MUNGE, %SNMP::Info::CiscoVTP::MUNGE, 'super_hero_powers' => \&munge_powers, ); # Override uptime() method from %SNMP::Info::GLOBALS sub uptime { my $sample = shift; my $name = $sample->name(); # this is silly but you get the idea return '600' if defined $name ; } # Create our own munge function sub munge_powers { my $power = shift; # Take the returned obscure value and return something useful. return 'Fire' if $power =~ /reallyhot/i; return 'Ice' if $power =~ /reallycold/i; # Else return $power; } # Copious Documentation here!!! =head1 NAME =head1 AUTHOR =head1 SYNOPSIS =head1 DESCRIPTION =head2 Inherited Classes =head2 Required MIBs =head1 GLOBALS =head2 Overrides =head1 TABLE METHODS =head2 Overrides =cut 1; # don't forget this line ----------------------- snip -------------------------------- =head1 SNMP::INFO INTERNALS =head2 Object Namespace Internal data is stored with bareword keys. For example $info->{debug} SNMP Data is stored or marked cached with keys starting with an underscore. For example $info->{_name} is the cache for $info->name(). Cached Table data is stored in $info->store() and marked cached per above. =head2 Package Globals These set the default value for an object upon creation. =over =item $DEBUG Default 0. Sends copious debug info to stdout. This global sets the object's debug status in new() unless 'Debug' argument passed in new(). Change objects' debug status with $info->debug(). =cut $DEBUG = 0; =item $BIGINT Default 0. Set to true to have 64 bit counters return Math::BigInt objects instead of scalar string values. See note under Interface Statistics about 64 bit values. =cut $BIGINT = 0; =item $NOSUCH Default 1. Set to false to disable RetryNoSuch option for SNMP::Session. Or see method in new() to do it on an object scope. =cut $NOSUCH = 1; =item $REPEATERS Default 20. MaxRepeaters for BULKWALK operations. See C for more info. Can change by passing L option in new() =cut $REPEATERS = 20; =back =head2 Data Munging Callback Subroutines =over =item munge_speed() Makes human friendly speed ratings using C<%SPEED_MAP>. %SPEED_MAP = ( '56000' => '56 kbps', '64000' => '64 kbps', '115000' => '115 kbps', '1500000' => '1.5 Mbps', '1536000' => 'T1', '1544000' => 'T1', '2000000' => '2.0 Mbps', '2048000' => '2.048 Mbps', '3072000' => 'Dual T1', '3088000' => 'Dual T1', '4000000' => '4.0 Mbps', '10000000' => '10 Mbps', '11000000' => '11 Mbps', '16000000' => '16 Mbps', '16777216' => '16 Mbps', '20000000' => '20 Mbps', '44210000' => 'T3', '44736000' => 'T3', '45000000' => '45 Mbps', '45045000' => 'DS3', '46359642' => 'DS3', '51850000' => 'OC-1', '54000000' => '54 Mbps', '64000000' => '64 Mbps', '100000000' => '100 Mbps', '149760000' => 'ATM on OC-3', '155000000' => 'OC-3', '155519000' => 'OC-3', '155520000' => 'OC-3', '200000000' => '200 Mbps', '400000000' => '400 Mbps', '599040000' => 'ATM on OC-12', '622000000' => 'OC-12', '622080000' => 'OC-12', '1000000000' => '1.0 Gbps', '2000000000' => '2.0 Gbps', '2488000000' => 'OC-48', ) Note: high speed interfaces (usually 1 Gbps or faster) have their link speed in C. i_speed() automatically determines whether to use C or C; if the latter is used, the value is munged by munge_highspeed(). SNMP::Info can return speeds up to terabit levels this way. =cut %SPEED_MAP = ( '56000' => '56 kbps', '64000' => '64 kbps', '115000' => '115 kbps', '1500000' => '1.5 Mbps', '1536000' => 'T1', '1544000' => 'T1', '2000000' => '2.0 Mbps', '2048000' => '2.048 Mbps', '3072000' => 'Dual T1', '3088000' => 'Dual T1', '4000000' => '4.0 Mbps', '10000000' => '10 Mbps', '11000000' => '11 Mbps', '16000000' => '16 Mbps', '16777216' => '16 Mbps', '20000000' => '20 Mbps', '44210000' => 'T3', '44736000' => 'T3', '45000000' => '45 Mbps', '45045000' => 'DS3', '46359642' => 'DS3', '51850000' => 'OC-1', '54000000' => '54 Mbps', '64000000' => '64 Mbps', '100000000' => '100 Mbps', '149760000' => 'ATM on OC-3', '155000000' => 'OC-3', '155519000' => 'OC-3', '155520000' => 'OC-3', '200000000' => '200 Mbps', '400000000' => '400 Mbps', '599040000' => 'ATM on OC-12', '622000000' => 'OC-12', '622080000' => 'OC-12', '1000000000' => '1.0 Gbps', '2000000000' => '2.0 Gbps', '2488000000' => 'OC-48', ); sub munge_speed { my $speed = shift; my $map = $SPEED_MAP{$speed}; #print " $speed -> $map " if (defined $map); return $map || $speed; } =item munge_highspeed() Makes human friendly speed ratings for C. =cut sub munge_highspeed { my $speed = shift; my $fmt = "%d Mbps"; if ( $speed > 9999999 ) { $fmt = "%d Tbps"; $speed /= 1000000; } elsif ( $speed > 999999 ) { $fmt = "%.1f Tbps"; $speed /= 1000000.0; } elsif ( $speed > 9999 ) { $fmt = "%d Gbps"; $speed /= 1000; } elsif ( $speed > 999 ) { $fmt = "%.1f Gbps"; $speed /= 1000.0; } return sprintf( $fmt, $speed ); } =item munge_ip() Takes a binary IP and makes it dotted ASCII. =cut sub munge_ip { my $ip = shift; return join( '.', unpack( 'C4', $ip ) ); } =item munge_mac() Takes an octet stream (HEX-STRING) and returns a colon separated ASCII hex string. =cut sub munge_mac { my $mac = shift; return unless defined $mac; return unless length $mac; $mac = join( ':', map { sprintf "%02x", $_ } unpack( 'C*', $mac ) ); return $mac if $mac =~ /^([0-9A-F][0-9A-F]:){5}[0-9A-F][0-9A-F]$/i; return; } =item munge_prio_mac() Takes an 8-byte octet stream (HEX-STRING) and returns a colon separated ASCII hex string. =cut sub munge_prio_mac { my $mac = shift; return unless defined $mac; return unless length $mac; $mac = join( ':', map { sprintf "%02x", $_ } unpack( 'C*', $mac ) ); return $mac if $mac =~ /^([0-9A-F][0-9A-F]:){7}[0-9A-F][0-9A-F]$/i; return; } =item munge_prio_port() Takes an 2-byte octet stream (HEX-STRING) and returns a colon separated ASCII hex string. =cut sub munge_prio_port { my $priop = shift; return unless defined $priop; return unless length $priop; $priop = join( ':', map { sprintf "%02x", $_ } unpack( 'C*', $priop ) ); return $priop if $priop =~ /^([0-9A-F][0-9A-F]:){1}[0-9A-F][0-9A-F]$/i; return; } =item munge_octet2hex() Takes a binary octet stream and returns an ASCII hex string. =cut sub munge_octet2hex { my $oct = shift; return join( '', map { sprintf "%x", $_ } unpack( 'C*', $oct ) ); } =item munge_dec2bin() Takes a binary char and returns its ASCII binary representation. =cut sub munge_dec2bin { my $num = shift; return unless defined $num; #return unless length($num); $num = unpack( "B32", pack( "N", $num ) ); # return last 8 characters only $num =~ s/.*(.{8})$/$1/; return $num; } =item munge_bits() Takes a SNMP2 'BITS' field and returns the ASCII bit string. =cut sub munge_bits { my $bits = shift; return unless defined $bits; return unpack( "B*", $bits ); } =item munge_counter64() If $BIGINT is set to true, then a Math::BigInt object is returned. See Math::BigInt for details. =cut sub munge_counter64 { my $counter = shift; return unless defined $counter; return $counter unless $BIGINT; my $bigint = Math::BigInt->new($counter); return $bigint; } =item munge_i_up() Net-SNMP tends to load C first, and so ignores the updated enumeration for C in C. This munge handles the "newer" definitions for the enumeration in IF-MIB. TODO: Get the precedence of MIBs and overriding of MIB data in Net-SNMP figured out. Hierarchy/precedence of MIBS in SNMP::Info. =cut sub munge_i_up { my $i_up = shift; return unless defined $i_up; my %ifOperStatusMap = ( '4' => 'unknown', '5' => 'dormant', '6' => 'notPresent', '7' => 'lowerLayerDown' ); return $ifOperStatusMap{$i_up} || $i_up; } =item munge_port_list() Takes an octet string representing a set of ports and returns a reference to an array of binary values each array element representing a port. If the element has a value of '1', then that port is included in the set of ports; the port is not included if it has a value of '0'. =cut sub munge_port_list { my $oct = shift; return unless defined $oct; my $list = [ split( //, unpack( "B*", $oct ) ) ]; return $list; } =item munge_null() Removes control characters from a string. =cut # munge_null() - removes nulls (\0) and other control characters sub munge_null { my $text = shift || return; $text =~ s/[[:cntrl:]]//g; return $text; } =item munge_e_type() Takes an OID and return the object name if the right MIB is loaded. =cut sub munge_e_type { my $oid = shift; my $name = &SNMP::translateObj($oid); return $name if defined($name); return $oid; } =back =head2 Internally Used Functions =over =item resolve_desthost() Takes the SNMP::Session C argument and determines if it is an 'IPv4' or 'IPv6' host. 'IPv6' hosts are prefixed with the C C as required by the underlying C library. If unable to determine the type of address or resolve a DNS name, dies with C. =cut sub resolve_desthost { my $desthost = shift; # If we have an IPv6 transport-specifier strip it $desthost =~ s/^(?:udp6:|udpv6:|udpipv6:)//x; my $ip = NetAddr::IP::Lite->new($desthost); if ($ip and $ip->bits == 32) { return $ip->addr; } elsif ($ip and $ip->bits == 128) { return 'udp6:' . $ip->addr; } else { croak "Unable to resolve DestHost: $desthost to an IP\n"; } } =item $info->init() Used internally. Loads all entries in %MIBS. =cut sub init { my $self = shift; # Get MibDirs if provided my $mibdirs = $self->{mibdirs} || []; # SNMP::initMib and SNMP::addMibDirs both look for some initial MIBs # so if we are not using Net-SNMP configuration files we need to # specify where the MIBs are before those calls. # Ignore snmp.conf and snmp.local.conf files if IgnoreNetSNMPConf # specified local $ENV{'SNMPCONFPATH'} = '' if $self->{IgnoreNetSNMPConf}; # We need to provide MIBDIRS if we are not getting them from a # configuration file my $mibdir = join (':', @$mibdirs); local $ENV{'MIBDIRS'} = "$mibdir" if $self->{IgnoreNetSNMPConf}; SNMP::initMib; my $version = $SNMP::VERSION; my ( $major, $minor, $rev ) = split( '\.', $version ); if ( $major < 5 ) { # Seems to work under 4.2.0 } elsif ( $major == 5 and $minor == 0 and $rev < 2 ) { carp("Net-SNMP 5.0.1 seems to be rather buggy. Upgrade.\n"); # This is a bug in net-snmp 5.0.1 perl module # see http://groups.google.com/groups?th=47aed6bf7be6a0f5 SNMP::init_snmp("perl"); } foreach my $d (@$mibdirs) { next unless -d $d; print "SNMP::Info::init() - Adding new mibdir:$d\n" if $self->debug() > 1; SNMP::addMibDirs($d); } my $mibs = $self->mibs(); foreach my $mib ( keys %$mibs ) { #print "SNMP::Info::init() - Loading mib:$mib\n" if $self->debug(); SNMP::loadModules("$mib"); unless ( defined $SNMP::MIB{ $mibs->{$mib} } ) { croak "The $mib did not load. See README for $self->{class}\n"; } } return; } =item $info->args() Returns a reference to the argument hash supplied to SNMP::Session =cut sub args { my $self = shift; return $self->{args}; } =item $info->class() Returns the class name of the object. =cut sub class { my $self = shift; return $self->{class}; } =item $info->error_throw(error message) Stores the error message for use by $info->error() If $info->debug() is true, then the error message is carped too. =cut sub error_throw { my $self = shift; my $error = shift; return unless defined $error; $self->{error} = $error; if ( $self->debug() ) { $error =~ s/\n+$//; carp($error); } return; } =item $info->funcs() Returns a reference to the %FUNCS hash. =cut sub funcs { my $self = shift; return $self->{funcs}; } =item $info->globals() Returns a reference to the %GLOBALS hash. =cut sub globals { my $self = shift; return $self->{globals}; } =item $info->mibs() Returns a reference to the %MIBS hash. =cut sub mibs { my $self = shift; return $self->{mibs}; } =item $info->munge() Returns a reference of the %MUNGE hash. =cut sub munge { my $self = shift; return $self->{munge}; } =item $info->nosuch() Returns NoSuch value set or not in new() =cut sub nosuch { my $self = shift; return $self->{nosuch}; } =item $info->session() Gets or Sets the SNMP::Session object. =cut sub session { my $self = shift; $self->{sess} = $_[0] if @_; return $self->{sess}; } =item $info->store(new_store) Returns or sets hash store for Table functions. Store is a hash reference in this format : $info->store = { attribute => { iid => value , iid2 => value2, ... } }; =cut sub store { my $self = shift; $self->{store} = $_[0] if @_; return $self->{store}; } =item $info->_global() Used internally by AUTOLOAD to create dynamic methods from %GLOBALS or a single instance MIB Leaf node name from a loaded MIB. Example: $info->name() on the first call dispatches to AUTOLOAD() which calls $info->_global('name') creating the method name(). These methods return data as a scalar. =cut sub _global { my $method = shift; my $oid = shift; return sub { my $self = shift; my $sess = $self->session(); return unless defined $sess; my $load = $method =~ /^load/; my $raw = $method =~ /raw$/; my $attr = $method; $attr =~ s/^(load|orig)_//; $attr =~ s/_raw$//; # Return cached data unless loading # We now store in raw format so munge before returning # unless expecting raw data if ( exists $self->{"_$attr"} && !$load ) { my $val = $self->{"_$attr"}; if ( !$raw ) { return $self->_munge($attr, $val); } else{ return $val; } } if ( $self->{Offline} ) { $self->error_throw( "SNMP::Info::_global: Offline but $attr is not in cache\n" ); return; } if ( $self->debug() ) { # Let's get the MIB Module and leaf name along with the OID my $qual_leaf = SNMP::translateObj($oid,0,1) || ''; print "SNMP::Info::_global $method : $qual_leaf : $oid\n"; } my $val = $sess->get($oid); # Mark as gotten. Even if it fails below, we don't want to keep failing. $self->{"_$attr"} = undef; if ( $sess->{ErrorStr} ) { $self->error_throw( "SNMP::Info::_global($method) $sess->{ErrorStr}"); return; } if ( defined $val and $val eq 'NOSUCHOBJECT' ) { $self->error_throw("SNMP::Info::_global($method) NOSUCHOBJECT"); return; } if ( defined $val and $val eq 'NOSUCHINSTANCE' ) { $self->error_throw("SNMP::Info::_global($method) NOSUCHINSTANCE"); return; } # Save Cached Value $self->_cache($attr, $val); # Data Munging if ( !$raw ) { $val = $self->_munge($attr, $val); } return $val; } } =item $info->_set(attr,val,iid,type) Used internally by set_multi() to run an SNMP set command. When run clears attr cache. Attr can be passed as either a scalar or a reference to an array or array of arrays when used with set_multi(). Example: $info->set_name('dog',3) uses autoload to resolve to $info->_set('name','dog',3); =cut sub _set { my ( $self, $attr, $val, $iid, $type ) = @_; my $varbind_list_ref; if ( !ref($attr) ) { $varbind_list_ref = [ [ $attr, $iid, $val, $type ] ]; } elsif ( ref($attr) =~ /ARRAY/ ) { $varbind_list_ref = [$attr]; $varbind_list_ref = $attr if ref( $$attr[0] ) =~ /ARRAY/; } else { $self->error_throw( "SNMP::Info::_set - Failed. Invalid arguments" ); return; } my $sess = $self->session(); return unless defined $sess; my $funcs = $self->funcs(); my $globals = $self->globals(); foreach my $var_list (@$varbind_list_ref) { my $list_attr = $var_list->[0]; my $list_iid = $var_list->[1]; my $list_val = $var_list->[2]; # Get rid of non-printable chars in $list_val for debug statements $list_val =~ s/\W//; # Instance is 0 for scalars without a supplied instance $var_list->[1] = $list_iid = defined $list_iid ? $list_iid : '0'; # Lookup oid my $oid = undef; $oid = $list_attr if SNMP::translateObj($list_attr); $oid = $globals->{$list_attr} if defined $globals->{$list_attr}; $oid = $funcs->{$list_attr} if defined $funcs->{$list_attr}; unless ( defined $oid ) { $self->error_throw( "SNMP::Info::_set($list_attr,$list_val) - Failed to find $list_attr in \%GLOBALS or \%FUNCS or loaded MIB." ); return; } # Check for fully qualified attr if ( $oid =~ /__/ ) { $oid =~ s/__/::/; $oid =~ s/_/-/g; } $var_list->[0] = $oid; $self->debug() and print "SNMP::Info::_set $list_attr.$list_iid ($oid.$list_iid) = $list_val\n"; delete $self->{"_$list_attr"}; } my $rv = $sess->set($varbind_list_ref); if ( $sess->{ErrorStr} ) { $self->error_throw("SNMP::Info::_set $sess->{ErrorStr}"); return; } return $rv; } =item $info->_make_setter(val,iid) Used internally by AUTOLOAD to create dynamic methods from either %GLOBALS, %FUNCS, or a valid mib leaf from a loaded MIB which runs an SNMP set command. When run clears the attribute cache. Example: $info->set_name('dog',3) dispatches to autoload to resolve to $info->_set('name','dog',3) and _make_setter creates the set_name() method. =cut sub _make_setter { my $method = shift; my $oid = shift; return sub { my $self = shift; my $val = shift; my $iid = shift; my $set_oid = $oid; my $globals = $self->globals(); my $attr = $method; $attr =~ s/^set_//; # The only thing which may give us the iid in $oid should be # a %GLOBALS entry appended with a number. In that case strip it # from the OID and use it as $iid if ( defined $globals->{$attr} && $globals->{$attr} =~ /(\.\d+$)/ ) { $iid = $1; $set_oid =~ s/$iid//; } # If we don't have $iid now we should be a %GLOBALS entry or single # instance MIB leaf so default to zero $iid = defined $iid ? $iid : '.0'; # prepend dot if necessary to $iid $iid = ".$iid" unless $iid =~ /^\./; my $sess = $self->session(); return unless defined $sess; $set_oid .= "$iid"; $self->debug() and print "SNMP::Info::_set $method$iid ($set_oid) = $val\n"; delete $self->{"_$attr"}; my $rv = $sess->set( $set_oid, $val ); if ( $sess->{ErrorStr} ) { $self->error_throw("SNMP::Info::_set $sess->{ErrorStr}"); return; } return $rv; } } =item $info->set_multi(arrayref) Used to run an SNMP set command on several new values in the one request. Returns the result of $info->_set(method). Pass either a reference to a 4 element array [, , , ] or a reference to an array of 4 element arrays to specify multiple values. - One of the following forms: 1) leaf identifier (e.g., C<'sysContact'>) 2) An entry in either %FUNCS, %GLOBALS (e.g., 'contact') - The dotted-decimal, instance identifier. For scalar MIB objects use '0' - The SNMP data value being set (e.g., 'netdisco') - Optional as the MIB should be loaded. If one of the set assignments is invalid, then the request will be rejected without applying any of the new values - regardless of the order they appear in the list. Example: my $vlan_set = [ ['qb_v_untagged',"$old_vlan_id","$old_untagged_portlist"], ['qb_v_egress',"$new_vlan_id","$new_egress_portlist"], ['qb_v_egress',"$old_vlan_id","$old_egress_portlist"], ['qb_v_untagged',"$new_vlan_id","$new_untagged_portlist"], ['qb_i_vlan',"$port","$new_vlan_id"], ]; $info->set_multi($vlan_set); =cut sub set_multi { my $self = shift; return $self->_set(@_); } =item $info->load_all() Debugging routine. This does not include any overridden method or method implemented by subroutine. Runs $info->load_METHOD() for each entry in $info->funcs(); Returns $info->store() -- See store() entry. Note return value has changed since version 0.3 =cut sub load_all { my $self = shift; my $sess = $self->session(); return unless defined $sess; my $funcs = $self->funcs(); foreach my $attrib ( keys %$funcs ) { $attrib = "load_$attrib"; $self->$attrib(); } $self->{_all}++; return unless defined wantarray; return $self->store(); } =item $info->all() Runs $info->load_all() once then returns $info->store(); Use $info->load_all() to reload the data. Note return value has changed since version 0.3 =cut sub all { my $self = shift; my $sess = $self->session(); return unless defined $sess; $self->load_all() unless defined $self->{_all}; return $self->store(); } =item $info->_load_attr() Used internally by AUTOLOAD to create dynamic methods from %FUNCS or a MIB Leaf node name contained within a table of a loaded MIB. Supports partial table fetches and single instance table fetches. See L. These methods return data as a reference to a hash. =cut sub _load_attr { my $method = shift; my $oid = shift; return sub { my $self = shift; my $partial = shift; my $sess = $self->session(); return unless defined $sess; my $ver = $self->snmp_ver(); my $load = $method =~ /^load/; my $raw = $method =~ /raw$/; my $attr = $method; $attr =~ s/^(load|orig)_//; $attr =~ s/_raw$//; # Return cached data unless loading or partial # We now store in raw format so munge before returning # unless expecting raw data return $self->_show_attr($attr, $raw) if ( defined $self->{"_${attr}"} && !$load && !defined $partial ); if ( $self->{Offline} ) { $self->error_throw( "SNMP::Info::_load_attr: Offline but $attr is not in cache\n" ); return; } # We want the qualified leaf name so that we can # specify the Module (MIB) in the case of private leaf naming # conflicts. Example: ALTEON-TIGON-SWITCH-MIB::agSoftwareVersion # and ALTEON-CHEETAH-SWITCH-MIB::agSoftwareVersion # Third argument to translateObj specifies the Module prefix my $qual_leaf = SNMP::translateObj($oid,0,1) || ''; # We still want just the leaf since a SNMP get in the case of a # partial fetch may strip the Module portion upon return. We need # the match to make sure we didn't leave the table during getnext # requests my ($leaf) = $qual_leaf =~ /::(.+)$/; # If we weren't able to translate, we'll only have an OID $leaf = $oid unless defined $leaf; $self->debug() and print "SNMP::Info::_load_attr $method : $qual_leaf", defined $partial ? "($partial)" : '', " : $oid" , defined $partial ? ".$partial" : '', "\n"; my $var = SNMP::Varbind->new( [$qual_leaf, $partial] ); # So devices speaking SNMP v.1 are not supposed to give out # data from SNMP2, but most do. Net-SNMP, being very precise # will tell you that the SNMP OID doesn't exist for the device. # They have a flag RetryNoSuch that is used for get() operations, # but not for getnext(). We set this flag normally, and if we're # using V1, let's try and fetch the data even if we get one of those. my $localstore = undef; my $errornum = 0; my %seen = (); my $vars = []; my $bulkwalk_no = $self->can('bulkwalk_no') ? $self->bulkwalk_no() : 0; my $bulkwalk_on = defined $self->{BulkWalk} ? $self->{BulkWalk} : 1; my $can_bulkwalk = $bulkwalk_on && !$bulkwalk_no; my $repeaters = $self->{BulkRepeaters} || $REPEATERS; my $bulkwalk = $can_bulkwalk && $ver != 1; my $loopdetect = defined $self->{LoopDetect} ? $self->{LoopDetect} : 1; if ( defined $partial ) { # Try a GET, in case the partial is a leaf OID. # Would like to only do this if we know the OID is # long enough; implementing that would require a # lot of MIB mucking. my $try = $sess->get($var); $errornum = $sess->{ErrorNum}; if ( defined($try) && $errornum == 0 && $try !~ /^NOSUCH/ ) { $var->[2] = $try; $vars = [$var]; $bulkwalk = 1; # fake a bulkwalk return } # We want to execute the while loop below for the getnext request. if ( $ver == 1 and $sess->{ErrorNum} and $sess->{ErrorStr} =~ /nosuch/i ) { $errornum = 0; } } # Use BULKWALK if we can because its faster if ( $bulkwalk && @$vars == 0 ) { ($vars) = $sess->bulkwalk( 0, $repeaters, $var ); if ( $sess->{ErrorNum} ) { $self->error_throw( "SNMP::Info::_load_attr: BULKWALK " . $sess->{ErrorStr}, "\n" ); return; } } while ( !$errornum ) { if ($bulkwalk) { $var = shift @$vars or last; } else { # GETNEXT instead of BULKWALK $sess->getnext($var); $errornum = $sess->{ErrorNum}; } if ( $self->debug() > 1 ) { use Data::Dumper; print "SNMP::Info::_load_attr $method : leaf = $oid , var = ", Dumper($var); } # Check if we've left the requested subtree last if $var->[0] !~ /$leaf$/; my $iid = $var->[1]; my $val = $var->[2]; unless ( defined $iid ) { $self->error_throw( "SNMP::Info::_load_attr: $method not here"); next; } # Check to make sure we are still in partial land if ( defined $partial and $iid !~ /^$partial$/ and $iid !~ /^$partial\./ ) { $self->debug() and print "$iid makes us leave partial land.\n"; last; } # Check if last element, V2 devices may report ENDOFMIBVIEW even if # instance or object doesn't exist. if ( $val eq 'ENDOFMIBVIEW' ) { last; } # Similarly for SNMPv1 - noSuchName return results in both $iid # and $val being empty strings. if ( $val eq '' and $iid eq '' ) { last; } # Another check for SNMPv1 - noSuchName return may results in an $iid # we've already seen and $val an empty string. If we don't catch # this here we erroneously report a loop below. if ( defined $seen{$iid} and $seen{$iid} and $val eq '' ) { last; } if ($loopdetect) { # Check to see if we've already seen this IID (looping) if ( defined $seen{$iid} and $seen{$iid} ) { $self->error_throw("Looping on: $method iid:$iid. "); last; } else { $seen{$iid}++; } } if ( $val eq 'NOSUCHOBJECT' ) { $self->error_throw( "SNMP::Info::_load_attr: $method : NOSUCHOBJECT"); next; } if ( $val eq 'NOSUCHINSTANCE' ) { $self->error_throw( "SNMP::Info::_load_attr: $method : NOSUCHINSTANCE"); next; } $localstore->{$iid} = $val; } # Cache data if we are not getting partial data: if ( !defined $partial ) { $self->_cache($attr, $localstore); } # Data Munging if ( !$raw ) { $localstore = $self->_munge($attr, $localstore); } return $localstore; } } =item $info->_show_attr() Used internally by AUTOLOAD to return data called by methods listed in %FUNCS. =cut sub _show_attr { my $self = shift; my $attr = shift; my $raw = shift; my $store = $self->store(); if ( !$raw ) { my $localstore = $store->{$attr}; return $self->_munge($attr, $localstore); } else { return $store->{$attr}; } } =item $info->snmp_connect_ip(ip) Returns true or false based upon snmp connectivity to an IP. =cut sub snmp_connect_ip { my $self = shift; my $ip = shift; my $ver = $self->snmp_ver(); my $comm = $self->snmp_comm(); return if $self->{Offline}; $ip = resolve_desthost($ip); return if ( $ip eq '0.0.0.0' ) or ( $ip =~ /^127\./ ); # Create session object my $snmp_test = SNMP::Session->new( 'DestHost' => $ip, 'Community' => $comm, 'Version' => $ver ); # No session object created unless ( defined $snmp_test ) { return; } # Session object created but SNMP connection failed. my $sess_err = $snmp_test->{ErrorStr} || ''; if ($sess_err) { return; } # Try to get some data from IP my $layers = $snmp_test->get('sysServices.0'); $sess_err = $snmp_test->{ErrorStr} || ''; if ($sess_err) { return; } return 1; } =item modify_port_list(portlist,offset,replacement) Replaces the specified bit in a port_list array and returns the packed bitmask =cut sub modify_port_list { my ( $self, $portlist, $offset, $replacement ) = @_; print "Original port list: @$portlist \n" if $self->debug(); @$portlist[$offset] = $replacement; # Some devices do not populate the portlist with all possible ports. # If we have lengthened the list fill all undefined elements with zero. foreach my $item (@$portlist) { $item = '0' unless ( defined($item) ); } print "Modified port list: @$portlist \n" if $self->debug(); return pack( "B*", join( '', @$portlist ) ); } =item $info->_cache(attr, data) Cache retrieved data so that if it's asked for again, we use the cache instead of going back to Net-SNMP. Data is cached inside the blessed hashref C<$self>. Accepts the leaf and value (scalar, or hashref for a table). Does not return anything useful. =cut sub _cache { my $self = shift; my ($attr, $data) = @_; my $store = $self->store(); if (ref {} eq ref $data) { $self->{"_${attr}"}++; $store->{$attr} = $data; } else { $self->{"_$attr"} = $data; } } =item $info->_munge(attr, data) Raw data returned from Net-SNMP might not be formatted correctly or might have platform-specific bugs or mistakes. The MUNGE feature of SNMP::Info allows for fixups to take place. Accepts the leaf and value (scalar, or hashref for a table) and returns the raw or the munged data, as appropriate. That is, you do not need to know whether MUNGE is installed, and it's safe to call this method regardless. =cut sub _munge { my $self = shift; my ($attr, $data) = @_; my $munge = $self->munge(); return $data unless defined $munge->{$attr}; if (ref {} eq ref $data) { my $subref = $munge->{$attr}; my %munged; foreach my $key ( keys %$data ) { my $value = $data->{$key}; next unless defined $value; $munged{$key} = $subref->($value); } return \%munged; } else { return unless $data; my $subref = $munge->{$attr}; return $subref->($data); } } =item _validate_autoload_method(method) Used internally by AUTOLOAD to validate that a dynamic method should be created. Returns the OID of the MIB leaf node the method will get or set. =over =item 1. Returns unless method is listed in %FUNCS, %GLOBALS, or is MIB Leaf node name in a loaded MIB for given class. =item 2. Translates the MIB Leaf node name to an OID. =item 3. Checks to see if the method access type is allowed for the resolved OID. Write access for set_ methods, read access for others. =back =cut sub _validate_autoload_method { my $self = shift; my $method = shift; my $setter = $method =~ /^set/; my $attr = $method; $attr =~ s/^(load|set|orig)_//; $attr =~ s/_raw$//; my $globals = $self->globals(); my $funcs = $self->funcs(); my $leaf_name = $globals->{$attr} || $funcs->{$attr} || $attr; # Check for fully qualified name if ( $leaf_name =~ /__/ ) { $leaf_name =~ s/__/::/; $leaf_name =~ s/_/-/g; } # skip if offline if ( $self->{Offline} ) { return [1,(exists $self->{store}->{$method} ? 1: 0)]; } # (#325) lazy load legacy RFC1213-MIB only if needed SNMP::loadModules('RFC1213-MIB') if $leaf_name =~ m/^(?:RFC1213-MIB::|ipr_|ipRoute)/ and not SNMP::translateObj($leaf_name); # Translate MIB leaf node name to OID my $oid = SNMP::translateObj($leaf_name); if ( $leaf_name =~ /^[.]?\d[\.\d]+$/ ) { $oid = $leaf_name; } unless ( defined $oid ) { print "SNMP::Info::_validate_autoload_method($leaf_name) Unable to resolve method.\n" if $self->debug(); return; } # Validate that we have proper access for the operation my $access = ''; # Prevent autovivification by checking that MIB leaf exists if (exists $SNMP::MIB{$oid}) { $access = $SNMP::MIB{$oid}{'access'} || ''; } # If we were given a fully qualified OID because we don't have the MIB # file, it will translate above but we won't be able to check access so # skip the check and return if ($access && ($method =~ /^set/ && $access !~ /Write|Create/) || ($method !~ /^set/ && $access eq 'NoAccess')) { print "SNMP::Info::_validate_autoload_method($attr : $oid) Not accessible for requested operation.\n" if $self->debug(); return; } my $table_leaf = 0; # This is an expensive check so we assume anything in the funcs and globals # hashes are known. Only for actual MIB leafs should we have to check the # MIB. If the parent of the leaf has indexes it is contained within a table. if ($funcs->{$attr}) { $table_leaf = 1; } elsif (!$globals->{$attr}) { # Prevent autovivification if (exists $SNMP::MIB{$oid} && exists $SNMP::MIB{$oid}{'parent'} && exists $SNMP::MIB{$oid}{'parent'}{'indexes'} && defined $SNMP::MIB{$oid}{'parent'}{'indexes'} && scalar( @{$SNMP::MIB{$oid}{'parent'}{'indexes'}} ) > 0) { $table_leaf = 1; } } # Tag on .0 for %GLOBALS and single instance MIB leafs unless # the leaf ends in a digit or we are going to use for a set operation if ( $table_leaf == 0 && ( $globals->{$attr} || $leaf_name ne $oid ) ) { unless ( $leaf_name =~ /\d$/ || $setter ) { $oid .= ".0"; } } my $return = [ $oid, $table_leaf ]; return $return; } =item $info->can() Overrides UNIVERSAL::can() so that objects will correctly report their capabilities to include dynamic methods generated at run time via AUTOLOAD. Calls parent can() first to see if method exists, if not validates that a method should be created then dispatches to the appropriate internal method for creation. Returns undef if the method does not exist and can not be created. =cut sub can { my $self = shift; my $method = shift; # use results of parent can() return $self->SUPER::can($method) if $self->SUPER::can($method); return if $method eq 'CARP_TRACE'; my $validated = $self->_validate_autoload_method($method); return unless $validated; my ($oid, $table) = @$validated; # _validate_autoload_method validates, so we need to check for # set_ , funcs, table leafs, and everything else goes to _global my $funcs = $self->funcs(); # We need to resolve funcs with a prefix or suffix my $base_method = $method; $base_method =~ s/^(load|orig)_//; $base_method =~ s/_raw$//; no strict 'refs'; ## no critic (ProhibitNoStrict ) # We could add load_/orig_/_raw alternatives to symbol table here on # first call of any type for a global or func since they all use the same # destination code, but they aren't used heavily in main code base so # we'll just create if/when they are called rather than pollute the # symbol table with entries that never get called. # Between 2012-2020 we actually added the methods generated below to the # symbol table, but they were global to the SNMP::Info class, while # methods for different device classes may point to different SNMP # objects. This made interacting with multiple device types from a single # script somewhat unreliable. # Check for set_ ing. if ( $method =~ /^set_/ ) { return _make_setter( $method, $oid, @_ ); } elsif ( defined $funcs->{$base_method} || $table ) { return _load_attr( $method, $oid, @_ ); } else { return _global( $method, $oid ); } } =back =head2 AUTOLOAD Each entry in either %FUNCS, %GLOBALS, or MIB Leaf node names present in loaded MIBs are used by AUTOLOAD() to create dynamic methods. =over =item 1. Returns unless method is listed in %FUNCS, %GLOBALS, or is a MIB Leaf node name in a loaded MIB for given class. =item 2. If the method exists in %GLOBALS or is a single instance MIB Leaf node name from a loaded MIB, _global() generates the method. =item 3. If a set_ prefix is present _make_setter() generates the method. =item 4. If the method exists in %FUNCS or is a MIB Leaf node name contained within a table from a loaded MIB, _load_attr() generates the method. =item 5. A load_ prefix forces reloading of data and does not use cached data. =item 6. A _raw suffix returns data ignoring any munge routines. =back Override any dynamic method listed in %GLOBALS, %FUNCS, or MIB Leaf node name a by creating a subroutine with the same name. For example to override $info->name() create `` sub name {...}'' in your subclass. =cut sub AUTOLOAD { my $self = shift; my ($sub_name) = $AUTOLOAD =~ /::(\w+)$/; return if $sub_name eq 'CARP_TRACE'; # Typos in function calls in SNMP::Info subclasses turn into # AUTOLOAD requests for non-methods. While this is deprecated, # we'll still get called, so report a less confusing error. if ( ref($self) !~ /SNMP::Info/ ) { # croak reports one level too high. die reports here. # I would really like to get the place that's likely to # have the typo, but perl doesn't want me to. croak( "SNMP::Info::AUTOLOAD($AUTOLOAD) called with no class (probably typo of function call to $sub_name)" ); } # This enables us to use SUPER:: for AUTOLOAD methods as well # as the true OO methods. Method needs to be renamed to prevent # namespace collision when we insert into the symbol table later. if ( $AUTOLOAD =~ /SUPER::$sub_name$/ ) { $AUTOLOAD =~ s/SUPER::$sub_name/orig_$sub_name/; $sub_name = "orig_$sub_name"; } return unless my $meth_ref = $self->can($sub_name, @_); return $self->$meth_ref(@_); } # Skip AUTOLOAD() sub DESTROY {} 1; =head1 COPYRIGHT AND LICENSE Changes from SNMP::Info Version 0.7 and on are: Copyright (c) 2003-2010 Max Baker and SNMP::Info Developers All rights reserved. Original Code is: Copyright (c) 2002-2003, Regents of the University of California All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the University of California, Santa Cruz nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. =cut