From 8a96ee4741633cf8e832903f7ce0f542a77dbed8 Mon Sep 17 00:00:00 2001 From: Thomas Guyot-Sionnest Date: Fri, 31 Jul 2009 02:45:30 -0400 Subject: [PATCH] Add tests using custom snmp agent Only multi-line string test for now (regression test), counter rollover tests planed with my snmp_counters_new branch. NB: 64bit counters are broken in NetSNMP::agent from NetSNMP version 5.4.1 and lower, but might come in handy one day --- plugins/tests/check_snmp.t | 56 +++++++++++++++++ plugins/tests/check_snmp_agent.pl | 101 ++++++++++++++++++++++++++++++ plugins/tests/conf/snmpd.conf | 23 +++++++ 3 files changed, 180 insertions(+) create mode 100755 plugins/tests/check_snmp.t create mode 100644 plugins/tests/check_snmp_agent.pl create mode 100644 plugins/tests/conf/snmpd.conf diff --git a/plugins/tests/check_snmp.t b/plugins/tests/check_snmp.t new file mode 100755 index 0000000..fcd15ea --- /dev/null +++ b/plugins/tests/check_snmp.t @@ -0,0 +1,56 @@ +#! /usr/bin/perl -w -I .. +# +# Test check_snmp by having an actual SNMP agent running +# + +use strict; +use Test::More; +use NPTest; +use FindBin qw($Bin); + +my $port_snmp = 16100 + int(rand(100)); +my $running = 1; + + +# Start up server +my @pids; +my $pid = fork(); +if ($pid) { + # Parent + push @pids, $pid; + # give our agent some time to startup + sleep(1); +} else { + # Child + #print "child\n"; + + print "Please contact SNMP at: $port_snmp\n"; + close(STDERR); # Coment out to debug snmpd problems (most errors sent there are OK) + exec("snmpd -c tests/conf/snmpd.conf -C -f -r udp:$port_snmp"); +} + +END { + foreach my $pid (@pids) { + if ($pid) { print "Killing $pid\n"; kill "INT", $pid } + } +}; + +if ($ARGV[0] && $ARGV[0] eq "-d") { + while (1) { + sleep 100; + } +} + +my $tests = 2; +if (-x "./check_snmp") { + plan tests => $tests; +} else { + plan skip_all => "No check_snmp compiled"; +} + +my $res; + +$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.0"); +cmp_ok( $res->return_code, '==', 0, "Exit OK when querying a multi-line string" ); +like($res->output, '/^SNMP OK - /', "String contains SNMP OK"); + diff --git a/plugins/tests/check_snmp_agent.pl b/plugins/tests/check_snmp_agent.pl new file mode 100644 index 0000000..d1ff6d0 --- /dev/null +++ b/plugins/tests/check_snmp_agent.pl @@ -0,0 +1,101 @@ +#! /usr/bin/perl -w -I .. +# +# Subagent for testing check_snmp +# + +#use strict; # Doesn't work +use NetSNMP::OID qw(:all); +use NetSNMP::agent; +use NetSNMP::ASN qw(ASN_OCTET_STR ASN_COUNTER ASN_COUNTER64 ASN_INTEGER ASN_INTEGER64 ASN_UNSIGNED ASN_UNSIGNED64); +#use Math::Int64 qw(uint64); # Skip that module whie we don't need it +sub uint64 { return $_ } + +if (!$agent) { + print "This program must run as an embedded NetSNMP agent\n"; + exit 1; +} + +my $baseoid = '.1.3.6.1.4.1.8072.3.2.67'; +# Next are arrays of indexes (Type, initial value and increments) +# Undef miltipliers are randomized +my $multiline = "Cisco Internetwork Operating System Software +IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-I9K91S-M), Version +12.2(20)EWA, RELEASE SOFTWARE (fc1) +Technical Support: http://www.cisco.com/techsupport +Copyright (c) 1986-2004 by cisco Systems, Inc. +"; +my @fields = (ASN_OCTET_STR, ASN_UNSIGNED, ASN_UNSIGNED, ASN_COUNTER, ASN_COUNTER64, ASN_UNSIGNED); +my @values = ($multiline, 4294965296, 1000, 4294965296, uint64("18446744073709351616"), int(rand(2**32))); +my @incrts = (undef, 1000, -500, 1000, 100000, undef); + +# Number of elements in our OID +my $oidelts; +{ + my @oid = split(/\./, $baseoid); + $oidelts = scalar(@oid); +} + +my $regoid = new NetSNMP::OID($baseoid); +$agent->register('check_snmp_agent', $regoid, \&my_snmp_handler); + +sub my_snmp_handler { + my ($handler, $registration_info, $request_info, $requests) = @_; + + for (my $request = $requests; $request; $request = $request->next) { + my $oid = $request->getOID(); + my $index; + my $next_index; + + # Validate the OID + my @numarray = $oid->to_array(); + if (@numarray != $oidelts) { + if ($request_info->getMode() == MODE_GETNEXT && @numarray == ($oidelts - 1)) { + # GETNEXT for the base oid; set it to the first index + push(@numarray, 0); + $next_index = 0; + } else { + # We got a request for the base OID or with extra elements + $request->setError($request_info, SNMP_ERR_NOERROR); + next; + } + } + + $index = pop(@numarray); + if ($index >= scalar(@fields)) { + # Index is out of bounds + $request->setError($request_info, SNMP_ERR_NOERROR); + next; + } + + # Handle the request + if ($request_info->getMode() == MODE_GETNEXT) { + if (++$index >= scalar(@fields)) { + # Index will grow out of bounds + $request->setError($request_info, SNMP_ERR_NOERROR); + next; + } + $index = (defined($next_index) ? $next_index : $index); + $request->setOID("$baseoid.$index"); + } elsif ($request_info->getMode() != MODE_GET) { + # Everything else is write-related modes + $request->setError($request_info, SNMP_ERR_READONLY); + next; + } + + # Set the response... setValue is a bit touchy about the data type, but accepts plain strings. + my $value = sprintf("%s", $values[$index]); + $request->setValue($fields[$index], $value); + + # And update the value + if (defined($incrts[$index])) { + $values[$index] += $incrts[$index]; + } elsif ($fields[$index] != ASN_OCTET_STR) { + my $minus = int(rand(2))*-1; + $minus = 1 unless ($minus); + my $exp = 32; + $exp = 64 if ($fields[$index] == ASN_COUNTER64 || $fields[$index] == ASN_INTEGER64 || $fields[$index] == ASN_UNSIGNED64); + $values[$index] = int(rand(2**$exp)); + } + } +} + diff --git a/plugins/tests/conf/snmpd.conf b/plugins/tests/conf/snmpd.conf new file mode 100644 index 0000000..eff5b0b --- /dev/null +++ b/plugins/tests/conf/snmpd.conf @@ -0,0 +1,23 @@ +############################################################################### +# Access Control +############################################################################### + +com2sec readonly localhost public + +group MyROGroup v1 readonly +group MyROGroup v2c readonly + +view all included .1 80 + +access MyROGroup "" any noauth exact all none none + +syslocation Wonderland +syscontact Alice + + +############################################################################### +# Embedded Subagents +############################################################################### + +perl do "tests/check_snmp_agent.pl"; + -- 2.30.2