diff options
Diffstat (limited to 'hosts/p64c-armhf-rb.debian.net/usr/local/sbin/nagios-check-libs')
| -rwxr-xr-x | hosts/p64c-armhf-rb.debian.net/usr/local/sbin/nagios-check-libs | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/hosts/p64c-armhf-rb.debian.net/usr/local/sbin/nagios-check-libs b/hosts/p64c-armhf-rb.debian.net/usr/local/sbin/nagios-check-libs new file mode 100755 index 00000000..77b37805 --- /dev/null +++ b/hosts/p64c-armhf-rb.debian.net/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; |