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#!/usr/local/bin/perl -w
# check_mailq - check to see how many messages are in the smtp queue awating
# transmittal.
#
# Initial version support sendmail's mailq command
# License Information:
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
############################################################################
use POSIX;
use strict;
use Getopt::Long;
use vars qw($opt_V $opt_h $opt_v $verbose $PROGNAME $opt_w $opt_c $opt_t $status $state $msg $msg_q );
use lib utils.pm;
use utils qw(%ERRORS &print_revision &support &usage );
#my $MAILQ = "/usr/bin/mailq"; # need to migrate support to utils.pm and autoconf
sub print_help ();
sub print_usage ();
sub process_arguments ();
$ENV{'PATH'}='';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
$PROGNAME = "check_mailq";
Getopt::Long::Configure('bundling');
$status = process_arguments();
if ($status){
print "ERROR: processing arguments\n";
exit $ERRORS{"UNKNOWN"};
}
$SIG{'ALRM'} = sub {
print ("ERROR: timed out waiting for $utils::PATH_TO_MAILQ \n");
exit $ERRORS{"WARNING"};
};
alarm($opt_t);
## open mailq
if ( defined $utils::PATH_TO_MAILQ && -x $utils::PATH_TO_MAILQ ) {
if (! open (MAILQ, "$utils::PATH_TO_MAILQ | " ) ) {
print "ERROR: could not open $utils::PATH_TO_MAILQ \n";
exit $ERRORS{'UNKNOWN'};
}
}else{
print "ERROR: Could not find mailq executable!\n";
exit $ERRORS{'UNKNOWN'};
}
# only first line is relevant in this iteration.
while (<MAILQ>) {
if (/mqueue/) {
print "$utils::PATH_TO_MAILQ = $_ "if $verbose ;
if (/empty/ ) {
$msg = "OK: mailq is empty";
$msg_q = 0;
$state = $ERRORS{'OK'};
}elsif ( /(\d+)/ ) {
$msg_q = $1 ;
print "msg_q = $msg_q warn=$opt_w crit=$opt_c\n" if $verbose;
if ($msg_q < $opt_w) {
$msg = "OK: mailq ($msg_q) is below threshold ($opt_w/$opt_c)";
$state = $ERRORS{'OK'};
}elsif ($msg_q >= $opt_w && $msg_q < $opt_c) {
$msg = "WARNING: mailq is $msg_q (threshold w = $opt_w)";
$state = $ERRORS{'WARNING'};
}else {
$msg = "CRITICAL: mailq is $msg_q (threshold c = $opt_c)";
$state = $ERRORS{'CRITICAL'};
}
}
last;
}
}
close (MAILQ);
# declare an error if we also get a non-zero return code from mailq
# unless already set to critical
if ( $? ) {
print "stderr = $? : $! \n" if $verbose;
$state = $state == $ERRORS{"CRITICAL"} ? $ERRORS{"CRITICAL"} : $ERRORS{"UNKNOWN"} ;
print "MAILQ error: $!\n" if $verbose;
}
## close mailq
# Perfdata support
print "$msg | mailq = $msg_q\n";
exit $state;
#####################################
#### subs
sub process_arguments(){
GetOptions
("V" => \$opt_V, "version" => \$opt_V,
"v" => \$opt_v, "verbose" => \$opt_v,
"h" => \$opt_h, "help" => \$opt_h,
"w=i" => \$opt_w, "warning=i" => \$opt_w, # warning if above this number
"c=i" => \$opt_c, "critical=i" => \$opt_c, # critical if above this number
"t=i" => \$opt_t, "timeout=i" => \$opt_t
);
if ($opt_V) {
print_revision($PROGNAME,'$Revision$ ');
exit $ERRORS{'OK'};
}
if ($opt_h) {
print_help();
exit $ERRORS{'OK'};
}
if (defined $opt_v ){
$verbose = $opt_v;
}
unless (defined $opt_t) {
$opt_t = $utils::TIMEOUT ; # default timeout
}
unless ( defined $opt_w && defined $opt_c ) {
print_usage();
exit $ERRORS{'UNKNOWN'};
}
if ( $opt_w >= $opt_c) {
print "Warning cannot be greater than Critical!\n";
exit $ERRORS{'UNKNOWN'};
}
return $ERRORS{'OK'};
}
sub print_usage () {
print "Usage: $PROGNAME [-w <warn>] [-c <crit>] [-t <timeout>] [-v verbose]\n";
}
sub print_help () {
print_revision($PROGNAME,'$Revision$');
print "Copyright (c) 2002 Subhendu Ghosh\n";
print "\n";
print_usage();
print "\n";
print " Checks the number of messages in the mail queue\n";
print " Feedback/patches to support non-sendmail mailqueue welcome\n\n";
print "-w (--warning) = Min. number of messages in queue to generate warning\n";
print "-c (--critical) = Min. number of messages in queu to generate critical alert ( w < c )\n";
print "-t (--timeout) = Plugin timeout in seconds (default = $utils::TIMEOUT)\n";
print "-h (--help)\n";
print "-V (--version)\n";
print "-v (--verbose) = deebugging output\n";
print "\n\n";
support();
}
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