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#!/usr/bin/perl -Tw
# Copyright (C) 2005 Peter Palfrader <peter@palfrader.org>
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 $params;
Getopt::Long::config('bundling');
if (!GetOptions (
'--help' => \$params->{'help'},
'--version' => \$params->{'version'},
'--verbose' => \$params->{'verbose'},
)) {
die ("$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose]\n");
};
if ($params->{'help'}) {
print "$PROGRAM_NAME: Usage: $PROGRAM_NAME [--help|--version] [--verbose]\n";
print "Reports processes that are linked against libraries that no longer exist.\n";
exit (0);
};
if ($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);
};
$SIG{'__DIE__'} = sub {
print STDERR @_;
exit $UNKNOWN;
};
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 $b} keys %processes)));
};
sub inVserver() {
open(F, "< /proc/self/status") or return 0;
while (<F>) {
my ($k, $v) = split(/: */, $_, 2);
if ($k eq 's_context') {
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 die ("Cannot run $LSOF -n: $!\n");
my @lsof=<LSOF>;
close LSOF;
if ($CHILD_ERROR) { # program failed
die("$LSOF -n returned with non-zero exit code: ".($CHILD_ERROR / 256)."\n");
};
for my $line (@lsof) {
if ($line =~ m/\.dpkg-/ || $line =~ m/path inode=/) {
my ($process, $pid, $user, undef, undef, undef, undef, $path, $rest) = split /\s+/, $line;
next if $path =~ m#^/proc/#;
next if ($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();
} else {
$message = 'No upgraded libs linked in running processes';
};
print $message,"\n";
exit $exit;
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