diff options
Diffstat (limited to 'hosts/cb3a-armhf-rb/usr')
| -rwxr-xr-x | hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-packages | 362 | ||||
| -rwxr-xr-x | hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-running-kernel | 252 | ||||
| -rwxr-xr-x | hosts/cb3a-armhf-rb/usr/local/sbin/nagios-check-libs | 204 |
3 files changed, 818 insertions, 0 deletions
diff --git a/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-packages b/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-packages new file mode 100755 index 00000000..28844e5a --- /dev/null +++ b/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-packages @@ -0,0 +1,362 @@ +#!/usr/bin/perl + +# dsa-check-packages + +# checks for obsolete/local and upgradeable packages. +# +# packages for the obsolete/local check can be ignored, by +# listing their full name in /etc/nagios/obsolete-packages-ignore +# or by having a regex (starting a line with "/") that matches +# the packagename in said file. +# +# Takes one optional argument, the location of the ignore file. + + +# Copyright (C) 2008, 2009 Peter Palfrader <peter@palfrader.org> +# +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice shall be +# included in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +use strict; +use warnings; +use English; + +my $IGNORE = "/etc/nagios/obsolete-packages-ignore"; +my $IGNORED = "/etc/nagios/obsolete-packages-ignore.d"; + +my %CODE = ( + 'OK' => 0, + 'WARNING' => 1, + 'CRITICAL' => 2, + 'UNKNOWN' => 3 +); +my $EXITCODE = 'OK'; +sub record($) { + my ($newexit) = @_; + die "code $newexit not defined\n" unless defined $CODE{$newexit}; + + if ($CODE{$newexit} > $CODE{$EXITCODE}) { + $EXITCODE = $newexit; + }; +} + + + +sub get_packages { + $ENV{'COLUMNS'} = 1000; + $ENV{'LC_ALL'} = 'C'; + open(F, "dpkg -l|") or die ("Cannot run dpkg: $!\n"); + my @lines = <F>; + close(F); + chomp(@lines); + + my $line; + my $has_arch = 0; + while (defined($line = shift @lines) && ($line !~ /\+\+\+/)) { + if ($line =~ /Architecture/) { $has_arch = 1; } + } + + my %pkgs; + for $line (@lines) { + my ($state, $pkg, $version, $arch, undef) = split(/ */, $line); + $arch = '' unless $has_arch; + $pkgs{$state}{$pkg} = { 'installed' => $version, arch => $arch } + } + + my $installed = $pkgs{'ii'}; + delete $pkgs{'ii'}; + + my @installed_packages = keys(%$installed); + my @cmd = ("apt-cache", "policy", @installed_packages); + + open my $olderr, ">&STDERR" or die "Can't dup STDERR: $!"; + open STDERR, ">/dev/null" or die "Can't dup STDOUT: $!"; + open (F, "-|", @cmd) or die ("Cannot run apt-cache policy: $!\n"); + @lines = <F>; + close(F); + open STDERR, ">&", $olderr or die "Can't dup OLDERR: $!"; + chomp(@lines); + + my $pkgname = undef; + my $candidate_found = 0; + while (defined($line = shift @lines)) { + if ($line =~ /^([^ ]*):$/) { + # when we have multi-arch capable fu, we require that + # apt-cache policy output is in the same order as its + # arguments. + # + # We needs thi, because the output block in apt-cache + # policy does not show the arch: + # + # | weasel@stanley:~$ apt-cache policy libedit2:amd64 + # | libedit2: + # | Installed: 2.11-20080614-5 + # | Candidate: 2.11-20080614-5 + # + # We replace the package name in the output with the + # one we asked for ($pkg:$arch) - but to match this up + # sanely we need the order to be correct. + # + # For squeeze systems (no m-a), apt-cache policy output + # is all different. + $pkgname = $1; + $candidate_found = 0; + if ($has_arch) { + my $from_list = shift @installed_packages; + next if ($pkgname eq $from_list); # no :$arch in pkgname we asked for + + my $ma_fix_pkgname = $pkgname.':'.$installed->{$from_list}->{'arch'}; + my $ma_fix_from_list = $from_list.':'.$installed->{$from_list}->{'arch'}; + + if ($pkgname eq $ma_fix_from_list || # e.g. ia32-libs-i386. dpkg -l: ia32-libs-i386, apt-cache policy: ia32-libs-i386:i386 + $ma_fix_pkgname eq $from_list) { + $pkgname = $from_list; + } else { + die "Unexpected order mismatch in apt-cache policy output (apt-cache policy name: $pkgname - dpkg -l name: $from_list)\n"; + } + } + } elsif ($line =~ /^ +Installed: (.*)$/) { + # etch dpkg -l does not print epochs, so use this info, it's better + $installed->{$pkgname}{'installed'} = $1; + # initialize security-update + $installed->{$pkgname}{'security-update'} = 0; + } elsif ($line =~ /^ +Candidate: (.*)$/) { + $installed->{$pkgname}{'candidate'} = $1; + } elsif ($line =~ / ([^ ]+) [0-9]+/) { + # check if the next lines show the sources of our candidate + if ($1 eq $installed->{$pkgname}{'candidate'}) { + $candidate_found = 1; + } + } elsif (($line =~ / +[0-9]+ [^ ]+\/(security\.([^ ]+\.)?debian\.org|debian-security).*\/updates\//) && $candidate_found ) { + $installed->{$pkgname}{'security-update'} = 1; + } elsif ($line =~ /^ +\*\*\*/) { + $line = shift @lines; + my @l = split(/ +/, $line); + $installed->{$pkgname}{'origin'} = $l[2]; + $candidate_found = 0; + } + } + + my (%current, %obsolete, %outofdate, %security_outofdate); + for my $pkgname (keys %$installed) { + my $pkg = $installed->{$pkgname}; + + unless (defined($pkg->{'candidate'}) && defined($pkg->{'origin'})) { + $obsolete{$pkgname} = $pkg; + next; + } + + if ($pkg->{'candidate'} ne $pkg->{'installed'}) { + if ($pkg->{'security-update'}) { + $security_outofdate{$pkgname} = $pkg; + } else { + $outofdate{$pkgname} = $pkg; + } + next; + }; + if ($pkg->{'origin'} eq '/var/lib/dpkg/status') { + $obsolete{$pkgname} = $pkg; + next; + } + $current{$pkgname} = $pkg; + } + + $pkgs{'current'} = \%current; + $pkgs{'outofdate'} = \%outofdate; + $pkgs{'security_outofdate'} = \%security_outofdate; + $pkgs{'obsolete'} = \%obsolete; + return \%pkgs; +} + +sub load_ignores { + my ($ignorefiles, $require_file) = @_; + + my @ignores; + + for my $ignoreitem (@$ignorefiles) { + next if (!$require_file and ! -e $ignoreitem); + + my @filestoopen; + if (-d $ignoreitem) { + opendir(DIR, $ignoreitem) or die ("Cannot open dir $ignoreitem: $!\n"); + @filestoopen = readdir(DIR); + closedir(DIR); + + @filestoopen = grep { -f ($ignoreitem.'/'.$_) } @filestoopen; + @filestoopen = grep { /^([a-z0-9_.-]+)+[a-z0-9]+$/i } @filestoopen; + @filestoopen = grep { !/dpkg-(old|dist|new|tmp)$/ } @filestoopen; + @filestoopen = map { ($ignoreitem.'/'.$_) } @filestoopen; + } else { + push @filestoopen, $ignoreitem; + } + + for my $f (@filestoopen) { + open (F, "< $f") or die ("Cannot open $f: $!\n"); + push @ignores, <F>; + close F; + } + } + chomp(@ignores); + return \@ignores; +} + +sub check_ignore { + my ($pkg, $ignores) = @_; + + my $ignore_this = 0; + for my $ignore (@$ignores) { + my $ig = $ignore; + return 1 if ($ig eq $pkg); + if (substr($ig,0,1) eq '/') { + substr($ig, 0, 1, ''); + $ig =~ s,/$,,; + return 1 if ($pkg =~ /$ig/); + } + } + return 0 +} + +sub filter_ignored { + my ($packages, $ignores) = @_; + + my $obs = $packages->{'obsolete'}; + + my (%ignored, %bad); + for my $pkg (keys %$obs) { + if (check_ignore($pkg, $ignores)) { + $ignored{$pkg} = $obs->{$pkg}; + } else { + $bad{$pkg} = $obs->{$pkg}; + }; + } + delete $packages->{'obsolete'}; + $packages->{'obsolete'} = \%bad; + $packages->{'obsolete-ignored'} = \%ignored; +}; + +sub usage { + my ($fd, $exit) = @_; + print $fd "Usage: $PROGRAM_NAME [<ignorefile|dir> [<ignorefile|dir> ...]]\n"; + exit $exit; +} + +my $ignorefiles = [$IGNORE, $IGNORED]; +my $ignorefile_userset = 0; +if (@ARGV >= 1) { + usage(\*STDOUT, 0) if ($ARGV[0] eq "-h"); + usage(\*STDOUT, 0) if ($ARGV[0] eq "--help"); + $ignorefile_userset = 1; + $ignorefiles = \@ARGV; +}; + +my $ignores = load_ignores($ignorefiles, $ignorefile_userset); +my $packages = get_packages(); + +filter_ignored($packages, $ignores); + + + +my @reportform = ( + { 'key' => 'obsolete', + 'listpackages' => 1, + 'long' => "%d local or obsolete packages: %s", + 'short' => "%d obs/loc", + 'perf' => "obs_loc=%d;1;5;0", + 'status' => 'WARNING' }, + { 'key' => 'outofdate', + 'listpackages' => 1, + 'long' => "%d out of date packages: %s", + 'short' => "%d updates", + 'perf' => "outdated=%d;1;5;0", + 'status' => 'WARNING' }, + { 'key' => 'current', + 'listpackages' => 0, + 'long' => "%d packages current.", + 'short' => "%d ok", + 'perf' => "current=%d;;;0", + 'status' => 'OK' }, + { 'key' => 'obsolete-ignored', + 'listpackages' => 1, + 'long' => "%d whitelisted local or obsolete packages: %s", + 'short' => "%d obs/loc(ignored)", + 'perf' => "obs_ign=%d;;;0", + 'status' => 'OK' }, + { 'key' => 'rc', + 'listpackages' => 1, + 'long' => "%d packages removed but not purged: %s", + 'short' => "%d rc", + 'perf' => "rm_unprg=%d;;;0", + 'status' => 'OK' }, + { 'key' => 'hi', + 'listpackages' => 1, + 'long' => "%d packages on hold: %s", + 'short' => "%d hi", + 'perf' => "hold=%d;;;0", + 'status' => 'OK' }, + { 'key' => 'pc', + 'listpackages' => 1, + 'long' => "%d packages requested to be purged but conffiles still installed: %s", + 'short' => "%d pc", + 'perf' => "prg_conf=%d;1;;0", + 'status' => 'WARNING' }, + { 'key' => 'security_outofdate', + 'listpackages' => 1, + 'long' => "%d packages with outstanding security updates: %s", + 'short' => "%d security-updates", + 'perf' => "security_outdated=%d;;1;0", + 'status' => 'CRITICAL' }, + ); + +my @longout; +my @perfout; +my @shortout; +for my $form (@reportform) { + my $pkgs = $packages->{$form->{'key'}}; + delete $packages->{$form->{'key'}}; + my $num = scalar keys %$pkgs; + push @perfout, sprintf($form->{'perf'}, $num); + next unless ($num > 0); + if ($form->{'listpackages'}) { + my $list = join(", ", keys %$pkgs); + push @longout, sprintf($form->{'long'}, $num, $list); + } else { + push @longout, sprintf($form->{'long'}, $num); + }; + push @shortout, sprintf($form->{'short'}, $num); + record($form->{'status'}); +}; +if (scalar keys %$packages) { + record('WARNING'); + unshift @shortout, "unk: ".join(", ", keys %$packages); + for my $status (sort {$b cmp $a} keys %$packages) { + my $pkgs = $packages->{$status}; + my $list = join(", ", keys %$pkgs); + unshift @longout, "Unknown package status $status: $list"; + }; +} + +my $shortout = $EXITCODE.": ".join(", ", @shortout); +my $longout = join("\n", @longout); +my $perfout = "|".join(" ", @perfout); + +print $shortout,"\n"; +print $longout,"\n"; +print $perfout,"\n"; + +exit $CODE{$EXITCODE}; diff --git a/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-running-kernel b/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-running-kernel new file mode 100755 index 00000000..80f45bfb --- /dev/null +++ b/hosts/cb3a-armhf-rb/usr/local/bin/dsa-check-running-kernel @@ -0,0 +1,252 @@ +#!/bin/bash + +# Check if the running kernel has the same version string as the on-disk +# kernel image. + +# Copyright 2008,2009,2011,2012,2013,2014 Peter Palfrader +# Copyright 2009 Stephen Gran +# Copyright 2010,2012,2013 Uli Martens +# Copyright 2011 Alexander Reichle-Schmehl +# +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice shall be +# included in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +OK=0; +WARNING=1; +CRITICAL=2; +UNKNOWN=3; + +get_offset() { + local file needle + + file="$1" + needle="$2" + + perl -e ' + undef $/; + $i = 0; $k=<>; + while (($i = index($k, "'"$needle"'", $i)) >= 0) { + print $i++,"\n"; + }; ' < "$file" +} + +get_avail() { + # This is wrong, but leaves room for when we have to care for machines running + # myfirstunix-image-0.1-dsa-arm + local prefix="$1"; shift + + local kervers=$(uname -r) + + local metavers='' + + # DSA uses kernel versions of the form 2.6.29.3-dsa-dl380-oldxeon, where + # Debian uses versions of the form 2.6.29-2-amd64 + if [ "${kervers#3}" != "$kervers" ]; then + metavers=$(echo $kervers | sed -r -e 's/^3\.[0-9]+(\.[0-9])?+-[A-Za-z0-9\.]+-(.*)/\2/') + elif [ "${kervers//dsa}" != "$kervers" ]; then + metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/') + else + metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/') + fi + + # Attempt to track back to a metapackage failed. bail + if [ "$metavers" = "$kervers" ]; then + return 2 + fi + + # We're just going to give up if we can't find a matching metapackage + # I tried being strict once, and it just caused a lot of headaches. We'll see how + # being lax does for us + + local output=$(apt-cache policy ${prefix}-image-${metavers} 2>/dev/null) + local metaavailvers=$(echo "$output" | grep '^ Candidate:' | awk '{print $2}') + local metainstavers=$(echo "$output" | grep '^ Installed:' | awk '{print $2}') + + if [ -z "$metaavailvers" ] || [ "$metaavailvers" = '(none)' ]; then + return 2 + fi + if [ -z "$metainstavers" ] || [ "$metainstavers" = '(none)' ]; then + return 2 + fi + + if [ "$metaavailvers" != "$metainstavers" ] ; then + echo "${prefix}-image-${metavers} $metaavailvers available but $metainstavers installed" + return 1 + fi + + local imagename=0 + # --no-all-versions show shows only the candidate + for vers in $(apt-cache --no-all-versions show ${prefix}-image-${metavers} | sed -n 's/^Depends: //p' | tr ',' '\n' | tr -d ' ' | grep ${prefix}-image | awk '{print $1}' | sort -u); do + if dpkg --compare-versions "1.$vers" gt "1.$imagename"; then + imagename=$vers + fi + done + + if [ -z "$imagename" ] || [ "$imagename" = 0 ]; then + return 2 + fi + + if [ "$imagename" != "${prefix}-image-${kervers}" ]; then + if dpkg --compare-versions 1."$imagename" lt 1."${prefix}-image-${kervers}"; then + return 2 + fi + echo "$imagename" != "${prefix}-image-${kervers}" + return 1 + fi + + local availvrs=$(apt-cache policy ${imagename} 2>/dev/null | grep '^ Candidate' | awk '{print $2}') + local kernelversion=$(apt-cache policy ${prefix}-image-${kervers} 2>/dev/null | grep '^ Installed:' | awk '{print $2}') + + if [ "$availvrs" = "$kernelversion" ]; then + return 0 + fi + + echo "$kernelversion != $availvrs" + return 1 +} + +cat_vmlinux() { + local image header filter hdroff + + image="$1" + header="$2" + filter="$3" + hdroff="$4" + + get_offset "$image" $header | head -n 5 | while read off; do + (if [ "$off" != 0 ]; then + dd ibs="$((off+hdroff))" skip=1 count=0 + fi && + dd bs=512k) < "$image" 2>/dev/null | $filter 2>/dev/null + done +} + +get_image_linux() { + local image + + image="$1" + + # gzip compressed image + cat_vmlinux "$image" "\x1f\x8b\x08\x00" "zcat" 0 + cat_vmlinux "$image" "\x1f\x8b\x08\x08" "zcat" 0 + # lzma compressed image + cat_vmlinux "$image" "\x00\x00\x00\x02\xff" "xzcat" -1 + cat_vmlinux "$image" "\x00\x00\x00\x04\xff" "xzcat" -1 + # xz compressed image + cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat" 0 + + echo "ERROR: Unable to extract kernel image." 2>&1 + exit 1 +} + + +freebsd_check_running_version() { + local imagefile="$1"; shift + + local r="$(uname -r)" + local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')" + + local q='@(#)FreeBSD '"$r $v" + + if zcat "$imagefile" | $STRINGS | grep -F -q "$q"; then + echo "OK" + else + echo "not OK" + fi +} + +STRINGS=""; +if [ -x "$(which strings)" ]; then + STRINGS="$(which strings)" +elif [ -x "$(which busybox)" -a "$( echo foobar | $(which busybox) strings 2>/dev/null)" = "foobar" ]; then + STRINGS="$(which busybox) strings" +fi + +searched="" +for on_disk in \ + "/boot/vmlinuz-`uname -r`"\ + "/boot/vmlinux-`uname -r`"\ + "/boot/kfreebsd-`uname -r`.gz"; do + + if [ -e "$on_disk" ]; then + if [ -z "$STRINGS" ]; then + echo "UNKNOWN: 'strings' command missing, perhaps install binutils or busybox?" + exit $UNKNOWN + fi + if [ "${on_disk/vmlinu}" != "$on_disk" ]; then + on_disk_version="`get_image_linux "$on_disk" | $STRINGS | grep 'Linux version' | head -n1`" + if [ -x /usr/bin/lsb_release ] ; then + vendor=$(lsb_release -i -s) + if [ -n "$vendor" ] && [ "xDebian" != "x$vendor" ] ; then + on_disk_version=$( echo $on_disk_version|sed -e "s/ ($vendor [[:alnum:]\.-]\+ [[:alnum:]\.]\+)//") + fi + fi + [ -z "$on_disk_version" ] || break + on_disk_version="`cat "$on_disk" | $STRINGS | grep 'Linux version' | head -n1`" + [ -z "$on_disk_version" ] || break + + echo "UNKNOWN: Failed to get a version string from image $on_disk" + exit $UNKNOWN + else + on_disk_version="$(zcat $on_disk | $STRINGS | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')" + fi + fi + searched="$searched $on_disk" +done + +if ! [ -e "$on_disk" ]; then + echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running" + exit $WARNING +fi + +if [ "$(uname -s)" = "Linux" ]; then + running_version="`cat /proc/version`" + if [ -z "$running_version" ] ; then + echo "UNKNOWN: Failed to get a version string from running system" + exit $UNKNOWN + fi + + if [ "$running_version" != "$on_disk_version" ]; then + echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]" + exit $WARNING + fi + + ret="$(get_avail linux)" + if [ $? = 1 ]; then + echo "WARNING: Kernel needs upgrade [$ret]" + exit $WARNING + fi +else + image_current=$(freebsd_check_running_version $on_disk) + running_version="`uname -s` `uname -r` `uname -v`" + if [ "$image_current" != "OK" ]; then + approx_time="$(date -d "@`stat -c '%Y' "$on_disk"`" +"%Y-%m-%d %H:%M:%S")" + echo "WARNING: Currently running kernel ($running_version) does not match on disk image (~ $approx_time)" + exit $WARNING; + fi + + ret="$(get_avail linux)" + if [ $? = 1 ]; then + echo "WARNING: Kernel needs upgrade [$ret]" + exit $WARNING + fi +fi + +echo "OK: Running kernel matches on disk image: [$running_version]" +exit $OK diff --git a/hosts/cb3a-armhf-rb/usr/local/sbin/nagios-check-libs b/hosts/cb3a-armhf-rb/usr/local/sbin/nagios-check-libs new file mode 100755 index 00000000..77b37805 --- /dev/null +++ b/hosts/cb3a-armhf-rb/usr/local/sbin/nagios-check-libs @@ -0,0 +1,204 @@ +#!/usr/bin/perl -w + +# Copyright (C) 2005, 2006, 2007, 2008, 2012, 2015 Peter Palfrader <peter@palfrader.org> +# 2012 Uli Martens <uli@youam.net> +# +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice shall be +# included in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +use strict; +use English; +use Getopt::Long; + +$ENV{'PATH'} = '/bin:/sbin:/usr/bin:/usr/sbin'; +delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'}; + +my $LSOF = '/usr/bin/lsof -F0'; +my $VERSION = '0.2015012901'; + +# nagios exit codes +my $OK = 0; +my $WARNING = 1; +my $CRITICAL = 2; +my $UNKNOWN = 3; + +my $params; +my $config; + +Getopt::Long::config('bundling'); + +sub dief { + print STDERR @_; + exit $UNKNOWN; +} + +if (!GetOptions ( + '--help' => \$params->{'help'}, + '--version' => \$params->{'version'}, + '--quiet' => \$params->{'quiet'}, + '--verbose' => \$params->{'verbose'}, + '-v' => \$params->{'verbose'}, + '--config=s' => \$params->{'config'}, + )) { + dief ("$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose] [--quiet] [--config=<CONFIGFILE>]\n"); +}; +if ($params->{'help'}) { + print "$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose] [--quiet] [--config=<CONFIGFILE>]\n"; + print "Reports processes that are linked against libraries that no longer exist.\n"; + print "The optional config file can specify ignore rules - see the sample config file.\n"; + exit (0); +}; +if ($params->{'version'}) { + print "nagios-check-libs $VERSION\n"; + print "nagios check for availability of debian (security) updates\n"; + print "Copyright (c) 2005, 2006, 2007, 2008, 2012 Peter Palfrader <peter\@palfrader.org>\n"; + exit (0); +}; + +if (! defined $params->{'config'}) { + $params->{'config'} = '/etc/nagios/check-libs.conf'; +} elsif (! -e $params->{'config'}) { + dief("Config file $params->{'config'} does not exist.\n"); +} + +if (-e $params->{'config'}) { + eval "use YAML::Syck; 1" or dief "you need YAML::Syck (libyaml-syck-perl) to load a config file"; + open(my $fh, '<', $params->{'config'}) or dief "Cannot open config file $params->{'config'}: $!"; + $config = LoadFile($fh); + close($fh); + if (!(ref($config) eq "HASH")) { + dief("Loaded config is not a hash!\n"); + } +} else { + $config = { + 'ignorelist' => [ + '$path =~ m#^/proc/#', + '$path =~ m#^/var/tmp/#', + '$path =~ m#^/SYS#', + '$path =~ m#^/drm$# # xserver stuff', + '$path =~ m#^/dev/zero#', + '$path =~ m#^/dev/shm/#', + ] + }; +} + +if (! exists $config->{'ignorelist'}) { + $config->{'ignorelist'} = []; +} elsif (! (ref($config->{'ignorelist'}) eq 'ARRAY')) { + dief("Config->ignorelist is not an array!\n"); +} + + +my %processes; + +sub getPIDs($$) { + my ($user, $process) = @_; + return join(', ', sort keys %{ $processes{$user}->{$process} }); +}; +sub getProcs($) { + my ($user) = @_; + + return join(', ', map { $_.' ('.getPIDs($user, $_).')' } (sort {$a cmp $b} keys %{ $processes{$user} })); +}; +sub getUsers() { + return join('; ', (map { $_.': '.getProcs($_) } (sort {$a cmp $b} keys %processes))); +}; +sub inVserver() { + my ($f, $key); + if (-e "/proc/self/vinfo" ) { + $f = "/proc/self/vinfo"; + $key = "XID"; + } else { + $f = "/proc/self/status"; + $key = "s_context"; + }; + open(F, "< $f") or return 0; + while (<F>) { + my ($k, $v) = split(/: */, $_, 2); + if ($k eq $key) { + close F; + return ($v > 0); + }; + }; + close F; + return 0; +} + +my $INVSERVER = inVserver(); + +print STDERR "Running $LSOF -n\n" if $params->{'verbose'}; +open (LSOF, "$LSOF -n|") or dief ("Cannot run $LSOF -n: $!\n"); +my @lsof=<LSOF>; +close LSOF; +if ($CHILD_ERROR) { # program failed + dief("$LSOF -n returned with non-zero exit code: ".($CHILD_ERROR / 256)."\n"); +}; + +my ($process, $pid, $user); +LINE: for my $line (@lsof) { + if ( $line =~ /^p/ ) { + my %fields = map { m/^(.)(.*)$/ ; $1 => $2 } grep { defined $_ and length $_ >1} split /\0/, $line; + $process = $fields{c}; + $pid = $fields{p}; + $user = $fields{L}; + next; + } + + unless ( $line =~ /^f/ ) { + dief("UNKNOWN strange line read from lsof\n"); + # don't print it because it contains NULL characters... + } + + my %fields = map { m/^(.)(.*)$/ ; $1 => $2 } grep { defined $_ and length $_ >1} split /\0/, $line; + + my $fd = $fields{f}; + my $inode = $fields{i}; + my $path = $fields{n}; + if ($path =~ m/\.dpkg-/ || $path =~ m/\(deleted\)/ || $path =~ /path inode=/ || $path =~ m#/\.nfs# || $fd eq 'DEL') { + my $deleted_in_path = ($path =~ m/\(deleted\)/ || $path =~ m/\.nfs/); + next if ($deleted_in_path && $fd =~ /^[0-9]*$/); # Ignore deleted files that are open via normal file handles. + next if ($deleted_in_path && $fd eq 'cwd'); # Ignore deleted directories that we happen to be in. + + $path =~ s/^\(deleted\)//; # in some cases "(deleted)" is at the beginning of the string + for my $i (@{$config->{'ignorelist'}}) { + my $ignore = eval($i); + next LINE if $ignore; + } + next if ($INVSERVER && ($process eq 'init') && ($pid == 1) && ($user eq 'root')); + if ( $params->{'verbose'} ) { + print STDERR "adding $process($pid) because of [$path]:\n"; + print STDERR $line; + } + $processes{$user}->{$process}->{$pid} = 1; + }; +}; + + + +my $message=''; +my $exit = $OK; +if (keys %processes) { + $exit = $WARNING; + $message = 'The following processes have libs linked that were upgraded: '. getUsers()."\n"; +} else { + $message = "No upgraded libs linked in running processes\n" unless $params->{'quiet'}; +}; + +print $message; +exit $exit; |