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#!/usr/bin/perl -Tw
# Copyright (C) 2005, 2006, 2007, 2008 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 English;
use Getopt::Long;
$ENV{'PATH'} = '/bin:/sbin:/usr/bin:/usr/sbin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
my $LSOF = '/usr/bin/lsof';
my $VERSION = '0.0.0';
# nagios exit codes
my $OK = 0;
my $WARNING = 1;
my $CRITICAL = 2;
my $UNKNOWN = 3;
my $params;
Getopt::Long::config('bundling');
sub dief {
print STDERR @_;
exit $UNKNOWN;
}
if (!GetOptions (
'--help' => \$params->{'help'},
'--version' => \$params->{'version'},
'--quiet' => \$params->{'quiet'},
'--verbose' => \$params->{'verbose'},
)) {
dief ("$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose] [--quiet]\n");
};
if ($params->{'help'}) {
print "$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose] [--quiet]\n";
print "Reports processes that are linked against libraries that no longer exist.\n";
exit (0);
};
if ($params->{'version'}) {
print "nagios-check-libs $VERSION\n";
print "nagios check for availability of debian (security) updates\n";
print "Copyright (c) 2005 Peter Palfrader <peter\@palfrader.org>\n";
exit (0);
};
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");
};
for my $line (@lsof) {
my ($process, $pid, $user, $fd, undef, undef, undef, $path, $rest) = split /\s+/, $line;
if ($line =~ m/\.dpkg-/ || $line =~ m/path inode=/ || $fd eq 'DEL') {
next if $path =~ m#^/proc/#;
next if $path =~ m#^/var/tmp/#;
next if $path =~ m#^/SYS#;
next if $path =~ m#^/drm$#; # xserver stuff
next if $path =~ m#^/dev/zero#;
next if ($INVSERVER && ($process eq 'init') && ($pid == 1) && ($user eq 'root'));
#$processes{$user}->{$process} = [] unless defined $processes{$user}->{$process};
$processes{$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;
|
