#! /usr/bin/perl -w -I .. # # check_ssh tests # # use strict; use Test::More; use NPTest; my $res; # Required parameters my $ssh_host = getTestParameter("NP_SSH_HOST", "A host providing SSH service", "localhost"); my $host_nonresponsive = getTestParameter("NP_HOST_NONRESPONSIVE", "The hostname of system not responsive to network requests", "10.0.0.1" ); my $hostname_invalid = getTestParameter("NP_HOSTNAME_INVALID", "An invalid (not known to DNS) hostname", "nosuchhost" ); plan tests => 14 + 6; SKIP: { skip "SSH_HOST must be defined", 6 unless $ssh_host; my $result = NPTest->testCmd( "./check_ssh -H $ssh_host" ); cmp_ok($result->return_code, '==', 0, "Exit with return code 0 (OK)"); like($result->output, '/^SSH OK - /', "Status text if command returned none (OK)"); $result = NPTest->testCmd( "./check_ssh -H $host_nonresponsive -t 2" ); cmp_ok($result->return_code, '==', 2, "Exit with return code 0 (OK)"); like($result->output, '/^CRITICAL - Socket timeout after 2 seconds/', "Status text if command returned none (OK)"); $result = NPTest->testCmd( "./check_ssh -H $hostname_invalid -t 2" ); cmp_ok($result->return_code, '==', 3, "Exit with return code 0 (OK)"); like($result->output, '/^check_ssh: Invalid hostname/', "Status text if command returned none (OK)"); } SKIP: { skip "No netcat available", 14 unless (system("which nc > /dev/null") == 0); # netcat on linux (on debian) will just keep the socket open if not advised otherwise # therefore we add -q to close it after two seconds after receiving the EOF from input my $nc_flags = "-l 5003 -N"; #A valid protocol version control string has the form # SSH-protoversion-softwareversion SP comments CR LF # # where `comments` is optional, protoversion is the SSH protocol version and # softwareversion is an arbitrary string representing the server software version open(NC, "echo 'SSH-2.0-nagiosplug.ssh.0.1' | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, '==', 0, "Got SSH protocol version control string"); like( $res->output, '/^SSH OK - nagiosplug.ssh.0.1 \(protocol 2.0\)/', "Output OK"); close NC; open(NC, "echo 'SSH-2.0-3.2.9.1' | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, "==", 0, "Got SSH protocol version control string with non-alpha softwareversion string"); like( $res->output, '/^SSH OK - 3.2.9.1 \(protocol 2.0\)/', "Output OK for non-alpha softwareversion string"); close NC; open(NC, "echo 'SSH-2.0-nagiosplug.ssh.0.1 this is a comment' | nc ${nc_flags} |"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003 -r nagiosplug.ssh.0.1" ); cmp_ok( $res->return_code, '==', 0, "Got SSH protocol version control string, and parsed comment appropriately"); like( $res->output, '/^SSH OK - nagiosplug.ssh.0.1 \(protocol 2.0\)/', "Output OK"); close NC; open(NC, "echo 'SSH-' | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, '==', 2, "Got invalid SSH protocol version control string"); like( $res->output, '/^SSH CRITICAL/', "Output OK"); close NC; open(NC, "echo '' | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, '==', 2, "No version control string received"); like( $res->output, '/^SSH CRITICAL - No version control string received/', "Output OK"); close NC; open(NC, "echo 'Not a version control string' | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, '==', 2, "No version control string received"); like( $res->output, '/^SSH CRITICAL - No version control string received/', "Output OK"); close NC; #RFC 4253 permits servers to send any number of data lines prior to sending the protocol version control string open(NC, "{ echo 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'; sleep 0.5; echo 'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB'; sleep 0.5; echo 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'; sleep 0.2; echo 'DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD'; sleep 0.3; printf 'EEEEEEEEEEEEEEEEEE'; sleep 0.2; printf 'EEEEEEEEEEEEEEEEEE\n'; sleep 0.2; echo 'Some\nPrepended\nData\nLines\n'; sleep 0.2; echo 'SSH-2.0-nagiosplug.ssh.0.2';} | nc ${nc_flags}|"); sleep 0.1; $res = NPTest->testCmd( "./check_ssh -H localhost -p 5003" ); cmp_ok( $res->return_code, '==', 0, "Got delayed SSH protocol version control string"); like( $res->output, '/^SSH OK - nagiosplug.ssh.0.2 \(protocol 2.0\)/', "Output OK"); close NC; }