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1 files changed, 230 insertions, 0 deletions

diff --git a/nagios-checks/nagios-check-apt-updates b/nagios-checks/nagios-check-apt-updates
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+++ b/nagios-checks/nagios-check-apt-updates
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+#!/usr/bin/perl -Tw
+
+# $Id$
+
+# nagios check for debian (security) updates,
+# based on net-snmp glue to security updates via apt-get.
+#  Copyright (C) 2004 SILVER SERVER Gmbh
+#  Copyright (C) 2004, 2005, 2006, 2007, 2008 Peter Palfrader
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+# USA
+
+use strict;
+use English;
+use Getopt::Long;
+use IO::Handle;
+use IPC::Open2;
+
+$ENV{'PATH'} = '/bin:/sbin:/usr/bin:/usr/sbin';
+delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
+
+my $APT = '/usr/bin/apt-get';
+my $VERBOSE;
+
+sub do_check($$$$$$) {
+	my ($pre_command, $timeout, $noupdate, $name, $updates_security, $updates_other) = @_;
+	my $fh;
+	my $pid;
+	my @command;
+
+	unless ($noupdate) {
+		print STDERR "Running $APT update in $name\n" if $VERBOSE;
+		@command = ($APT, 'update');
+		unshift @command, @$pre_command;
+		$fh = new IO::Handle;
+		$pid = open2($fh, \*STDIN, @command) or die ("Cannot run $APT update in $name: $!\n");
+		local $SIG{ALRM} = sub { die "Timeout for apt-get update.\n" };
+		alarm $timeout;
+		my @ignore=<$fh>;
+		alarm 0;
+		close $fh;
+		waitpid $pid, 0;
+		if ($CHILD_ERROR) { # program failed
+			die("$APT update returned with non-zero exit code in $name: ".($CHILD_ERROR / 256)."\n");
+		};
+	};
+
+	print STDERR "Running $APT --simulate upgrade in $name\n" if $VERBOSE;
+	@command = ($APT, qw{--simulate upgrade});
+	unshift @command, @$pre_command;
+	$fh = new IO::Handle;
+	$pid = open2($fh, \*STDIN, @command) or die ("Cannot run $APT --simulate upgrade | sort -u in $name: $!\n");
+	local $SIG{ALRM} = sub { die "Timeout for apt-get --simulate upgrade.\n" };
+	alarm $timeout;
+	my @lines=<$fh>;
+	close $fh;
+	alarm 0;
+	waitpid $pid, 0;
+	if ($CHILD_ERROR) { # program failed
+		die("$APT --simulate upgrade | sort -u returned with non-zero exit code in $name: ".($CHILD_ERROR / 256)."\n");
+	};
+
+	@lines = sort {$a cmp $b} @lines;
+	my %uniq;
+	@lines = grep {!$uniq{$_}++} @lines;
+
+	print STDERR "Processing information for $name\n" if $VERBOSE;
+	for my $line (@lines)  {
+		if ($line =~ m/^Inst\s+(\S+)\s+/) {
+			my $package = $1;
+			if ($line =~ m/^Inst\s+\S+\s+.*security/i) {
+				push @$updates_security, $package.($name ne '/' ? "($name)" : '');
+			} else {
+				push @$updates_other, $package.($name ne '/' ? "($name)" : '');
+			};
+		}
+	}
+}
+
+
+
+my $VERSION = '0.0.3 - $Rev$';
+my $use_sudo = 1;
+my $params;
+
+# nagios exit codes
+my $OK = 0;
+my $WARNING = 1;
+my $CRITICAL = 2;
+my $UNKNOWN = 3;
+
+$params->{'chroots'} = [];
+$params->{'vservers'} = [];
+$params->{'timeout'} = 20;
+Getopt::Long::config('bundling');
+if (!GetOptions (
+	'--help'		=> \$params->{'help'},
+	'--version'		=> \$params->{'version'},
+	'--sudo'		=> \$params->{'sudo'},
+	'--noupdate'		=> \$params->{'noupdate'},
+	'--nosudo'		=> \$params->{'nosudo'},
+	'--verbose'		=> \$params->{'verbose'},
+	'--warnifupdates'	=> \$params->{'warnifupdates'},
+	'--timeout=i'		=> \$params->{'timeout'},
+	'--chroot=s'		=> $params->{'chroots'},
+	'--vserver=s'		=> $params->{'vservers'}
+	)) {
+	die ("Usage: $PROGRAM_NAME [--help|--version] [--sudo|--nosudo] [--timeout=<timeout>] [--verbose]\n");
+};
+if ($params->{'help'}) {
+	print "nagios-check-apt-updates $VERSION\n";
+	print "Usage: $PROGRAM_NAME [--help|--version] [--sudo|--nosudo] [--verbose]\n";
+	print "Reports packages to upgrade, updating the list if necessary.\n";
+	print "\n";
+	print "  --help              Print this short help.\n";
+	print "  --version           Report version number.\n";
+	print "  --sudo              Use sudo to call apt-get (default).\n";
+	print "  --noupdate          Do not run apt-get update first.\n";
+	print "  --nosudo            Do not use sudo to call apt-get.\n";
+	print "  --warnifupdates     Exit with a WARNING status if any updates are available.\n";
+	print "  --timeout=<timeout> Timeout in seconds for each of the two apt-get runs.\n";
+	print "  --verbose           Be a little verbose.\n";
+	print "  --chroot=<path>     Run check in path.\n";
+	print "  --vserver=<vserver> Run check in vserver.\n";
+	print "\n";
+	print "Note that for --sudo (default) you will need entries in /etc/sudoers like these:\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/bin/apt-get update\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/bin/apt-get --simulate upgrade\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/sbin/chroot /chroot-ia32 /usr/bin/apt-get update\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/sbin/chroot /chroot-ia32 /usr/bin/apt-get --simulate upgrade\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/sbin/vserver phpserver exec /usr/bin/apt-get update\n";
+	print "nagios  ALL=(ALL) NOPASSWD: /usr/sbin/vserver phpserver exec /usr/bin/apt-get --simulate upgrade\n";
+	print "\n";
+	exit (0);
+};
+if ($params->{'version'}) {
+	print "nagios-check-apt-updates $VERSION\n";
+	print "nagios check for availability of debian (security) updates\n";
+	print "Copyright (c) 2004 SILVER SERVER Gmbh\n";
+	print "Copyright (c) 2004,2005 Peter Palfrader <peter\@palfrader.org>\n";
+	exit (0);
+};
+if ($params->{'sudo'} && $params->{'nosudo'}) {
+	die ("$PROGRAM_NAME: --sudo and --nosudo are mutually exclusive.\n");
+};
+if ($params->{'sudo'}) {
+	$use_sudo = 1;
+};
+if ($params->{'nosudo'}) {
+	$use_sudo = 0;
+};
+if (scalar @{$params->{'chroots'}} == 0 && scalar @{$params->{'vservers'}} == 0) {
+	$params->{'chroots'} = ['/'];
+};
+$VERBOSE = $params->{'verbose'};
+
+
+$SIG{'__DIE__'} = sub {
+	print STDERR @_;
+	exit $UNKNOWN;
+};
+
+
+my @updates_security;
+my @updates_other;
+
+
+# Make sure chroot paths are nice;
+my @chroots = ();
+for my $root (@{$params->{'chroots'}}) {
+	if ($root =~ m#^(/[a-zA-Z0-9/.-]*)$#) {
+		push @chroots, $1;
+	} else {
+		die ("Chroot path $root is not nice.\n");
+	};
+};
+for my $root (@chroots) {
+	my @pre_command = ();
+	unshift @pre_command, 'chroot', $root if ($root ne '/');
+	unshift @pre_command, 'sudo' if $use_sudo;
+	do_check(\@pre_command, $params->{'timeout'}, $params->{'noupdate'}, $root, \@updates_security, \@updates_other);
+}
+
+# Make sure vserver names are nice;
+my @vservers = ();
+for my $vserver (@{$params->{'vservers'}}) {
+	if ($vserver =~ m#^([a-zA-Z0-9.-]+)$#) {
+		push @vservers, $1;
+	} else {
+		die ("Vserver name $vserver is not nice.\n");
+	};
+};
+for my $vserver (@vservers) {
+	my @pre_command = ();
+	unshift @pre_command, '/usr/sbin/vserver', $vserver, 'exec';
+	unshift @pre_command, 'sudo' if $use_sudo;
+	do_check(\@pre_command, $params->{'timeout'}, $params->{'noupdate'}, $vserver, \@updates_security, \@updates_other);
+}
+
+
+
+
+my $exit = $OK;
+
+my $updateinfo;
+if (@updates_security) {
+	$updateinfo .= 'Security updates ('.(scalar @updates_security).'): '.join(', ', @updates_security)."; ";
+	$exit = $CRITICAL;
+}
+if (@updates_other) {
+	$updateinfo .= 'Other Updates ('.(scalar @updates_other).'): '.join(', ', @updates_other)."; ";
+	$exit = $WARNING if ($params->{'warnifupdates'} and $exit == $OK);
+};
+$updateinfo = 'No updates available' unless defined $updateinfo;
+
+
+print $updateinfo,"\n";
+exit $exit;