check_ifoperstatus is now more user friendly in case of missing arguments

Added proper usage messages in case of missing arguments.
Removed accidently committed Data::Dumper call.
Minor whitespace fixes.

2 files changed, 26 insertions, 29 deletions

diff --git a/NEWS b/NEWS
index 768a1cc..66106e0 100644
--- a/NEWS
+++ b/NEWS
@@ -40,6 +40,7 @@ This file documents the major additions and syntax changes between releases.
         check_snmp now supports standard threshold ranges and doubles (floating numbers) in thresholds
         check_fping now supports passing target timeout and interval to fping (#2347686 - Martin Foster)
         Fixed SNMPv3 behaviour of check_ifoperstatus. Added -x to define privprotocol (#2343438 - Robin Schroeder)
+        check_ifoperstatus is now more userfriendly in case of missing arguments
 
 1.4.13 25th Sept 2008
         Fix Debian bug #460097: check_http --max-age broken (Hilko Bengen)
diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
index 88782f5..e137e7f 100755
--- a/plugins-scripts/check_ifoperstatus.pl
+++ b/plugins-scripts/check_ifoperstatus.pl
@@ -43,18 +43,19 @@ use Getopt::Long;
 
 my $PROGNAME = "check_ifoperstatus";
 sub print_help ();
-sub usage ();
+sub usage ($);
+sub print_usage ();
 sub process_arguments ();
 
 my $timeout;
 my $status;
 my %ifOperStatus =      ('1','up',
-                         '2','down',
-                         '3','testing',
-                         '4','unknown',
-                         '5','dormant',
-                         '6','notPresent',
-                         '7','lowerLayerDown');  # down due to the state of lower layer interface(s)
+                     '2','down',
+                     '3','testing',
+                     '4','unknown',
+                     '5','dormant',
+                     '6','notPresent',
+                     '7','lowerLayerDown');  # down due to the state of lower layer interface(s)
 
 my $state = "UNKNOWN";
 my $answer = "";
@@ -96,7 +97,6 @@ my %session_opts;
 $status = process_arguments();
 
 
-use Data::Dumper;
 # Just in case of problems, let's not hang Nagios
 $SIG{'ALRM'} = sub {
         print ("ERROR: No snmp response from $hostname (alarm)\n");
@@ -105,7 +105,6 @@ $SIG{'ALRM'} = sub {
 
 alarm($timeout);
 
-print Dumper(\%session_opts);
 ($session, $error) = Net::SNMP->session(%session_opts);
 
                 
@@ -269,8 +268,13 @@ sub fetch_ifindex {
         return $snmpkey;
 }
 
-sub usage() {
-        printf "\nMissing arguments!\n";
+sub usage($) {
+        print "$_[0]\n";
+        print_usage();
+        exit $ERRORS{"UNKNOWN"};
+}
+
+sub print_usage() {
         printf "\n";
         printf "usage: \n";
         printf "check_ifoperstatus -k <IF_KEY> -H <HOSTNAME> [-C <community>]\n";
@@ -279,10 +283,11 @@ sub usage() {
         printf "This programm is licensed under the terms of the ";
         printf "GNU General Public License\n(check source code for details)\n";
         printf "\n\n";
-        exit $ERRORS{"UNKNOWN"};
 }
 
 sub print_help() {
+        print_revision($PROGNAME, '@NP_VERSION@');
+        print_usage();
         printf "check_ifoperstatus plugin for Nagios monitors operational \n";
         printf "status of a particular network interface on the target host\n";
         printf "\nUsage:\n";
@@ -323,7 +328,6 @@ sub print_help() {
         printf "intensive.  Use it sparingly or not at all.  -n is used to match against\n";
         printf "a much more descriptive ifName value in the IfXTable to verify that the\n";
         printf "snmpkey has not changed to some other network interface after a reboot.\n\n";
-        print_revision($PROGNAME, '@NP_VERSION@');
         
 }
 
@@ -371,14 +375,11 @@ sub process_arguments() {
         }
 
         if (! utils::is_hostname($hostname)){
-                usage();
-                exit $ERRORS{"UNKNOWN"};
+                usage("Hostname invalid or not given");
         }
 
         unless ($snmpkey > 0 || defined $ifdescr || defined $iftype){
-                printf "Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided)\n";
-                usage();
-                exit $ERRORS{"UNKNOWN"};
+                usage("Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided");
         }
 
         if (defined $name) {
@@ -419,21 +420,18 @@ sub process_arguments() {
                 
                         # Must define a security level even though defualt is noAuthNoPriv
                         unless ( grep /^$seclevel$/, qw(noAuthNoPriv authNoPriv authPriv) ) {
-                                usage();
-                                exit $ERRORS{"UNKNOWN"};
+                                usage("Must define a security level even though default is noAuthNoPriv");
                         }
                         
                         # Authentication wanted
                         if ( $seclevel eq 'authNoPriv' || $seclevel eq 'authPriv' ) {
-                                unless ( $authproto eq 'MD5' || $authproto eq 'SHA1' ) {
-                                        usage();
-                                        exit $ERRORS{"UNKNOWN"};
+                                if (defined $authproto && $authproto ne 'MD5' && $authproto ne 'SHA1') {
+                                        usage("Auth protocol can be either MD5 or SHA1");
                                 }
                                 $session_opts{'-authprotocol'} = $authproto if(defined $authproto);
 
                                 if ( !defined $authpass) {
-                                        usage();
-                                        exit $ERRORS{"UNKNOWN"};
+                                        usage("Auth password/key is not defined");
                                 }else{
                                         if ($authpass =~ /^0x/ ) {
                                                 $session_opts{'-authkey'} = $authpass ;
@@ -446,8 +444,7 @@ sub process_arguments() {
                         # Privacy (DES encryption) wanted
                         if ($seclevel eq 'authPriv' ) {
                                 if (! defined $privpass) {
-                                        usage();
-                                        exit $ERRORS{"UNKNOWN"};
+                                        usage("Privacy passphrase/key is not defined");
                                 }else{
                                         if ($privpass =~ /^0x/){
                                                 $session_opts{'-privkey'} = $privpass;
@@ -465,8 +462,7 @@ sub process_arguments() {
                         }
                 
                 }else {
-                                        usage();
-                                        exit $ERRORS{'UNKNOWN'}; ;
+                        usage("Security level or name is not defined");
                 }
         } # end snmpv3