[monitoring-plugins] Add mailq -C option for config dir or config file

[Lee Clemens]

 Module: monitoring-plugins
 Branch: master
 Commit: 6246b8f1830e8a375bc656deafd28aab715b4fd9
 Author: Lee Clemens <java at leeclemens.net>
   Date: Tue May 16 11:23:43 2017 -0400
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=6246b8f

Add mailq -C option for config dir or config file

New variable, mailq_args, is appended for postfix mta mailq commands

Fixes #1489

---

 plugins-scripts/check_mailq.pl | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/plugins-scripts/check_mailq.pl b/plugins-scripts/check_mailq.pl
index 32f498d..9ef292e 100755
--- a/plugins-scripts/check_mailq.pl
+++ b/plugins-scripts/check_mailq.pl
@@ -28,9 +28,9 @@
 use POSIX;
 use strict;
 use Getopt::Long;
-use vars qw($opt_V $opt_h $opt_v $verbose $PROGNAME $opt_w $opt_c $opt_t $opt_s
-					$opt_M $mailq $status $state $msg $msg_q $msg_p $opt_W $opt_C $mailq @lines
-					%srcdomains %dstdomains);
+use vars qw($opt_V $opt_h $opt_v $verbose $PROGNAME $opt_w $opt_c $opt_t $opt_s $opt_d
+					$opt_M $mailq $status $state $msg $msg_q $msg_p $opt_W $opt_C $mailq $mailq_args
+					@lines %srcdomains %dstdomains);
 use FindBin;
 use lib "$FindBin::Bin";
 use utils qw(%ERRORS &print_revision &support &usage );
@@ -48,6 +48,8 @@ $PROGNAME = "check_mailq";
 $mailq = 'sendmail';	# default
 $msg_q = 0 ;
 $msg_p = 0 ;
+# If appended, must start with a space
+$mailq_args = '' ;
 $state = $ERRORS{'UNKNOWN'};
 
 Getopt::Long::Configure('bundling');
@@ -68,6 +70,10 @@ if ($opt_s) {
 	$sudo = "";
 }
 
+if ($opt_d) {
+	$mailq_args = $mailq_args . ' -C ' . $opt_d;
+}
+
 $SIG{'ALRM'} = sub {
 	print ("ERROR: timed out waiting for $utils::PATH_TO_MAILQ \n");
 	exit $ERRORS{"WARNING"};
@@ -309,8 +315,8 @@ elsif ( $mailq eq "postfix" ) {
 
      ## open mailq
         if ( defined $utils::PATH_TO_MAILQ && -x $utils::PATH_TO_MAILQ ) {
-                if (! open (MAILQ, "$sudo $utils::PATH_TO_MAILQ | " ) ) {
-                        print "ERROR: could not open $utils::PATH_TO_MAILQ \n";
+                if (! open (MAILQ, "$sudo $utils::PATH_TO_MAILQ$mailq_args | " ) ) {
+                        print "ERROR: could not open $utils::PATH_TO_MAILQ$mailq_args \n";
                         exit $ERRORS{'UNKNOWN'};
                 }
         }elsif( defined $utils::PATH_TO_MAILQ){
@@ -330,7 +336,7 @@ elsif ( $mailq eq "postfix" ) {
         close MAILQ;
 
         if ( $? ) {
-		print "CRITICAL: Error code ".($?>>8)." returned from $utils::PATH_TO_MAILQ",$/;
+		print "CRITICAL: Error code ".($?>>8)." returned from $utils::PATH_TO_MAILQ$mailq_args",$/;
 		exit $ERRORS{CRITICAL};
         }
 
@@ -343,7 +349,7 @@ elsif ( $mailq eq "postfix" ) {
 	}elsif ($lines[0]=~/Mail queue is empty/) {
 		$msg_q = 0;
         }else{
-                print "Couldn't match $utils::PATH_TO_MAILQ output\n";
+                print "Couldn't match $utils::PATH_TO_MAILQ$mailq_args output\n";
                 exit   $ERRORS{'UNKNOWN'};
         }
 
@@ -568,7 +574,8 @@ sub process_arguments(){
 		 "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,
-		 "s"   => \$opt_s, "sudo"       => \$opt_s
+		 "s"   => \$opt_s, "sudo"       => \$opt_s,
+		 "d:s" => \$opt_d, "configdir:s" => \$opt_d
 		 );
 
 	if ($opt_V) {
@@ -649,7 +656,7 @@ sub process_arguments(){
 }
 
 sub print_usage () {
-	print "Usage: $PROGNAME -w <warn> -c <crit> [-W <warn>] [-C <crit>] [-M <MTA>] [-t <timeout>] [-s] [-v]\n";
+	print "Usage: $PROGNAME -w <warn> -c <crit> [-W <warn>] [-C <crit>] [-M <MTA>] [-t <timeout>] [-s] [-d <CONFIGDIR>] [-v]\n";
 }
 
 sub print_help () {
@@ -667,6 +674,7 @@ sub print_help () {
 	print "-t (--timeout)   = Plugin timeout in seconds (default = $utils::TIMEOUT)\n";
 	print "-M (--mailserver) = [ sendmail | qmail | postfix | exim | nullmailer ] (default = autodetect)\n";
 	print "-s (--sudo)      = Use sudo to call the mailq command\n";
+	print "-d (--configdir) = Config file or directory\n";
 	print "-h (--help)\n";
 	print "-V (--version)\n";
 	print "-v (--verbose)   = debugging output\n";