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#! /usr/bin/perl -w
#
# check_rsync - Check Rsync and modules availability
#
# Copyright (C) 2006 Thomas Guyot-Sionnest <tguyot@gmail.com>
#
# 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 POSIX;
use strict;
use Getopt::Long;
# Make sure this module is installed or IPC::Cmd::run won't work as expected.
require IPC::Run;
use IPC::Cmd qw[run];
use vars qw($opt_H $opt_p $opt_m);
use vars qw($PROGNAME);
use lib "/usr/local/nagios/libexec";
use utils qw($TIMEOUT %ERRORS);
$PROGNAME = "check_rsync";
$ENV{'PATH'}='';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
Getopt::Long::Configure('bundling');
GetOptions (
"H=s" => \$opt_H, "hostname=s" => \$opt_H,
"p=s" => \$opt_p, "port=s" => \$opt_p,
"m=s@" => \$opt_m, "module=s@" => \$opt_m );
unless (defined($opt_H)){
print "Usage: $PROGNAME -H <host> [-p <port>] [-m <module>[,<user>,<password>] [-m <module>[,<user>,<password>]...]]\n";
exit $ERRORS{'UNKNOWN'};
}
my $host = $opt_H;
my $port = defined($opt_p) ? $opt_p : 873;
# Create an array for each -m arguments and store them in @modules
my @modules;
if (defined($opt_m)) {
for(@$opt_m) {
push @modules, [ split(/,/) ];
}
}
# Just in case of problems, let's not hang Nagios
$SIG{'ALRM'} = sub {
print "CRITICAL: Rsync timed out\n";
exit $ERRORS{"CRITICAL"};
};
# Rsync arguments
my $source = "rsync://$host";
alarm($TIMEOUT);
# Get a list of modules to see if rsync is up
my $command = "/usr/bin/rsync --port=$port $source";
my (undef, $error_code, undef, $stdout_buf, $stderr_buf ) =
run( command => $command, verbose => 0 );
#Turn off alarm
alarm(0);
my $realerr = $error_code >> 8;
report_error("Rsync command $command failed with error " . $realerr) if ($realerr != 0);
# If one or more -m, check if these modules exists first...
if (@modules) {
# IPC::Run have the bad habbit of randomly concatenating multiple lines
# in the same array element.
my @result;
for (@$stdout_buf) {
push(@result, split(/\n/));
}
foreach my $mod (@modules) {
my $match = 0;
for (@result) {
$match = 1 if (/^$$mod[0]\s/);
}
report_error("Module $$mod[0] not found") if ($match == 0);
}
} else { # else just return OK
print "OK: Rsync is up\n";
exit $ERRORS{'OK'};
}
# Check each -m aruments...
for my $arg (@modules) {
if (defined($$arg[1]) and defined($$arg[2])) {
$source = "rsync://$$arg[1]" . '@' . "$host/$$arg[0]";
$ENV{'RSYNC_PASSWORD'} = $$arg[2];
} else {
$source = "rsync://$host/$$arg[0]";
}
alarm($TIMEOUT);
# Get a file listing of the root of the module
undef $error_code; # Better safe than sorry...
$command = "/usr/bin/rsync --port=$port $source";
(undef, $error_code, undef, $stdout_buf, $stderr_buf ) =
run( command => $command, verbose => 0 );
#Turn off alarm
alarm(0);
$realerr = $error_code >> 8;
report_error("Rsync command failed on module $$arg[0] with error " . $realerr) if ($realerr != 0);
}
if (@modules > 0) {
print "OK: Rsync is up with ", scalar(@modules), " module tested\n" if (@modules == 1);
print "OK: Rsync is up with ", scalar(@modules), " modules tested\n" if (@modules > 1);
exit $ERRORS{'OK'};
} else { # We hould never end up here :)
print "UNKNOWN: The unexpected occured (bug?)\n";
exit $ERRORS{'UNKNOWN'};
}
# Report error passed as one string, print rsync messages to STDERR
sub report_error {
my $report = shift;
print "CRITICAL: $report\n";
print STDERR @$stderr_buf;
exit $ERRORS{'CRITICAL'};
}
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