check_mailq: Add OpenSMTPD support

configure.ac

@@ -1557,6 +1557,17 @@ else
 	AC_MSG_WARN([Could not find qmail-qstat or equivalent])
 fi
 
+AC_PATH_PROG(PATH_TO_SMTPCTL,smtpctl)
+AC_ARG_WITH(smtpctl_command,
+            ACX_HELP_STRING([--with-smtpctl-command=PATH],
+                            [sets path to smtpctl]), PATH_TO_SMTPCTL=$withval)
+if test -n "$PATH_TO_SMTPCTL"
+then
+	AC_DEFINE_UNQUOTED(PATH_TO_SMTPCTL,"$PATH_TO_SMTPCTL",[path to smtpctl])
+else
+	AC_MSG_WARN([Could not find smtpctl or equivalent])
+fi
+
 dnl SWAP info required is amount allocated/available and amount free
 dnl The plugin works through all the swap devices and adds up the total swap
 dnl available.

plugins-scripts/check_mailq.pl

@@ -520,7 +520,47 @@ elsif ( $mailq eq "exim" ) {
 		$state = $ERRORS{'CRITICAL'};
 	}
 } # end of ($mailq eq "exim")
+elsif ( $mailq eq "opensmtpd" ) {
+	## open smtpctl
+	if ( defined $utils::PATH_TO_SMTPCTL && -x $utils::PATH_TO_SMTPCTL ) {
+		if (! open (MAILQ, "$sudo $utils::PATH_TO_SMTPCTL show queue | " ) ) {
+			print "ERROR: could not open $utils::PATH_TO_SMTPCTL \n";
+			exit $ERRORS{'UNKNOWN'};
+		}
+	}elsif( defined $utils::PATH_TO_SMTPCTL){
+		unless (-x $utils::PATH_TO_SMTPCTL) {
+			print "ERROR: $utils::PATH_TO_SMTPCTL is not executable by (uid $>:gid($)))\n";
+			exit $ERRORS{'UNKNOWN'};
+		}
+	} else {
+		print "ERROR: \$utils::PATH_TO_SMTPCTL is not defined\n";
+		exit $ERRORS{'UNKNOWN'};
+	}
 
+	while (<MAILQ>) {
+
+		# 34357f5b3f589feb|inet4|mta||f.someone@domaina.org|no-reply@domainb.com|no-reply@domainb.com|1498235412|1498581012|0|25|pending|17168|Network error on destination MXs
+		if (/^.*|.*|.*|.*|.*|.*|.*|.*|.*|.*|.*|.*|.*|.*$/) {
+			$msg_q++ ;
+		}
+	}
+	close(MAILQ);
+
+	if ( $? ) {
+		print "CRITICAL: Error code ".($?>>8)." returned from $utils::PATH_TO_SMTPCTL",$/;
+		exit $ERRORS{CRITICAL};
+	}
+	if ($msg_q < $opt_w) {
+		$msg = "OK: $mailq mailq ($msg_q) is below threshold ($opt_w/$opt_c)";
+		$state = $ERRORS{'OK'};
+	}elsif ($msg_q >= $opt_w  && $msg_q < $opt_c) {
+		$msg = "WARNING: $mailq mailq is $msg_q (threshold w = $opt_w)";
+		$state = $ERRORS{'WARNING'};
+	}else {
+		$msg = "CRITICAL: $mailq mailq is $msg_q (threshold c = $opt_c)";
+		$state = $ERRORS{'CRITICAL'};
+	}
+} # end of ($mailq eq "opensmtpd")
 elsif ( $mailq eq "nullmailer" ) {
 	## open mailq
 	if ( defined $utils::PATH_TO_MAILQ && -x $utils::PATH_TO_MAILQ ) {
@@ -618,7 +658,7 @@ sub process_arguments(){
 	}
 
 	if (defined $opt_M) {
-		if ($opt_M =~ /^(sendmail|qmail|postfix|exim|nullmailer)$/) {
+		if ($opt_M =~ /^(sendmail|qmail|postfix|exim|nullmailer|opensmtpd)$/) {
 			$mailq = $opt_M ;
 		}elsif( $opt_M eq ''){
 			$mailq = 'sendmail';
@@ -648,6 +688,10 @@ sub process_arguments(){
 		{
 			$mailq = 'nullmailer';
 		}
+		elsif (defined $utils::PATH_TO_SMTPCTL && -x $utils::PATH_TO_SMTPCTL)
+		{
+			$mailq = 'opensmtpd';
+		}
 		else {
 			$mailq = 'sendmail';
 		}
@@ -673,7 +717,7 @@ sub print_help () {
 	print "-W (--Warning)   = Min. number of messages for same domain in queue to generate warning\n";
 	print "-C (--Critical)  = Min. number of messages for same domain in queue to generate critical alert ( W < C )\n";
 	print "-t (--timeout)   = Plugin timeout in seconds (default = $utils::TIMEOUT)\n";
-	print "-M (--mailserver) = [ sendmail | qmail | postfix | exim | nullmailer ] (default = autodetect)\n";
+	print "-M (--mailserver) = [ sendmail | qmail | postfix | exim | nullmailer | opensmtpd ] (default = autodetect)\n";
 	print "-h (--help)\n";
 	print "-V (--version)\n";
 	print "-v (--verbose)   = debugging output\n";