/usr/lib/nagios/plugins/check_libs is in nagios-plugins-contrib 9.20140106.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | #!/usr/bin/perl -w
# Copyright (C) 2005, 2006, 2007, 2008, 2012 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 = '0.2012042101';
# 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 $UNKNOWN;
}
if (!GetOptions (
'--help' => \$params->{'help'},
'--version' => \$params->{'version'},
'--quiet' => \$params->{'quiet'},
'--verbose' => \$params->{'verbose'},
'--config=s' => \$params->{'config'},
)) {
dief ("$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-plugins/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=/ || $fd eq 'DEL') {
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;
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