1 files changed, 160 insertions, 202 deletions

diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
index d0a1655..588993b 100755
--- a/plugins-scripts/check_ifoperstatus.pl
+++ b/plugins-scripts/check_ifoperstatus.pl
@@ -43,25 +43,26 @@ 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 = "";
 my $snmpkey = 0;
 my $community = "public";
 my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
-my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
+my ($seclevel, $authproto, $secname, $authpass, $privpass, $privproto, $auth, $priv, $context);
 my $port = 161;
 my @snmpoids;
 my $sysUptime        = '1.3.6.1.2.1.1.3.0';
@@ -89,6 +90,7 @@ my $lastc;
 my $dormantWarn;
 my $adminWarn;
 my $name;
+my %session_opts;
 
 ### Validate Arguments
 
@@ -97,19 +99,28 @@ $status = process_arguments();
 
 # Just in case of problems, let's not hang Nagios
 $SIG{'ALRM'} = sub {
-     print ("ERROR: No snmp response from $hostname (alarm)\n");
-     exit $ERRORS{"UNKNOWN"};
+        print ("ERROR: No snmp response from $hostname (alarm)\n");
+        exit $ERRORS{"UNKNOWN"};
 };
 
 alarm($timeout);
 
+($session, $error) = Net::SNMP->session(%session_opts);
+
+                
+if (!defined($session)) {
+                        $state='UNKNOWN';
+                        $answer=$error;
+                        print ("$state: $answer\n");
+                        exit $ERRORS{$state};
+}
 
 ## map ifdescr to ifindex - should look at being able to cache this value
 
 if (defined $ifdescr || defined $iftype) {
         # escape "/" in ifdescr - very common in the Cisco world
         if (defined $iftype) {
-                $status=fetch_ifindex($snmpIfType, $iftype);  
+                $status=fetch_ifindex($snmpIfType, $iftype);
         } else {
                 $ifdescr =~ s/\//\\\//g;
                 $status=fetch_ifindex($snmpIfDescr, $ifdescr);  # if using on device with large number of interfaces
@@ -138,88 +149,86 @@ push(@snmpoids,$snmpIfDescr);
 push(@snmpoids,$snmpIfName) if (defined $ifXTable) ;
 push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
 
-   if (!defined($response = $session->get_request(@snmpoids))) {
-      $answer=$session->error;
-      $session->close;
-      $state = 'WARNING';
-      print ("$state: SNMP error: $answer\n");
-      exit $ERRORS{$state};
-   }
-
-   $answer = sprintf("host '%s', %s(%s) is %s\n", 
-      $hostname, 
-      $response->{$snmpIfDescr},
-      $snmpkey, 
-      $ifOperStatus{$response->{$snmpIfOperStatus}}
-   );
-
-
-   ## Check to see if ifName match is requested and it matches - exit if no match
-   ## not the interface we want to monitor
-   if ( defined $ifName && not ($response->{$snmpIfName} eq $ifName) ) {
-      $state = 'UNKNOWN';
-      $answer = "Interface name ($ifName) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
-      print ("$state: $answer\n");
-      exit $ERRORS{$state};
-   } 
-
-   ## define the interface name
-   if (defined $ifXTable) {
-     $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ; 
-   }else{
-     $name = $response->{$snmpIfDescr} ;
-   }
-   
-   ## if AdminStatus is down - some one made a consious effort to change config
-   ##
-   if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
-     $answer = "Interface $name (index $snmpkey) is administratively down.";
-     if ( not defined $adminWarn or $adminWarn eq "w" ) {
-        $state = 'WARNING';
-     } elsif ( $adminWarn eq "i" ) {
-        $state = 'OK';
-     } elsif ( $adminWarn eq "c" ) {
-        $state = 'CRITICAL';
-     } else { # If wrong value for -a, say warning
-        $state = 'WARNING';
-     }
-   } 
-   ## Check operational status
-   elsif ( $response->{$snmpIfOperStatus} == 2 ) {
-      $state = 'CRITICAL';
-      $answer = "Interface $name (index $snmpkey) is down.";
-   } elsif ( $response->{$snmpIfOperStatus} == 5 ) {
-      if (defined $dormantWarn ) {
-                                if ($dormantWarn eq "w") {
-                          $state = 'WARNING';
-                                  $answer = "Interface $name (index $snmpkey) is dormant.";
-                  }elsif($dormantWarn eq "c") {
-                        $state = 'CRITICAL';
-                                  $answer = "Interface $name (index $snmpkey) is dormant.";
-        }elsif($dormantWarn eq "i") {
-                          $state = 'OK';
-                                $answer = "Interface $name (index $snmpkey) is dormant.";
-        }
-                        }else{
-                # dormant interface  - but warning/critical/ignore not requested
-                   $state = 'CRITICAL';
-                   $answer = "Interface $name (index $snmpkey) is dormant.";
-                        }
-   } elsif ( $response->{$snmpIfOperStatus} == 6 ) {
-           $state = 'CRITICAL';
-           $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
-   } elsif ( $response->{$snmpIfOperStatus} == 7 ) {
-           $state = 'CRITICAL';
-           $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
+if (!defined($response = $session->get_request(@snmpoids))) {
+        $answer=$session->error;
+        $session->close;
+        $state = 'WARNING';
+        print ("$state: SNMP error: $answer\n");
+        exit $ERRORS{$state};
+}
 
-   } elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4  ) {
-           $state = 'CRITICAL';
-           $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
+$answer = sprintf("host '%s', %s(%s) is %s\n", 
+        $hostname, 
+        $response->{$snmpIfDescr},
+        $snmpkey, 
+        $ifOperStatus{$response->{$snmpIfOperStatus}}
+);
+
+
+## Check to see if ifName match is requested and it matches - exit if no match
+## not the interface we want to monitor
+if ( defined $ifName && not ($response->{$snmpIfName} eq $ifName) ) {
+        $state = 'UNKNOWN';
+        $answer = "Interface name ($ifName) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
+        print ("$state: $answer\n");
+        exit $ERRORS{$state};
+} 
+
+## define the interface name
+if (defined $ifXTable) {
+         $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ; 
+}else{
+         $name = $response->{$snmpIfDescr} ;
+}
 
-   } else {
-      $state = 'OK';
-      $answer = "Interface $name (index $snmpkey) is up.";
-   }
+## if AdminStatus is down - some one made a consious effort to change config
+##
+if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
+        $answer = "Interface $name (index $snmpkey) is administratively down.";
+        if ( not defined $adminWarn or $adminWarn eq "w" ) {
+                $state = 'WARNING';
+        } elsif ( $adminWarn eq "i" ) {
+                $state = 'OK';
+        } elsif ( $adminWarn eq "c" ) {
+                $state = 'CRITICAL';
+        } else { # If wrong value for -a, say warning
+                $state = 'WARNING';
+        }
+} 
+## Check operational status
+elsif ( $response->{$snmpIfOperStatus} == 2 ) {
+        $state = 'CRITICAL';
+        $answer = "Interface $name (index $snmpkey) is down.";
+} elsif ( $response->{$snmpIfOperStatus} == 5 ) {
+        if (defined $dormantWarn ) {
+                if ($dormantWarn eq "w") {
+                        $state = 'WARNING';
+                        $answer = "Interface $name (index $snmpkey) is dormant.";
+                }elsif($dormantWarn eq "c") {
+                        $state = 'CRITICAL';
+                        $answer = "Interface $name (index $snmpkey) is dormant.";
+                }elsif($dormantWarn eq "i") {
+                        $state = 'OK';
+                        $answer = "Interface $name (index $snmpkey) is dormant.";
+                }
+        }else{
+                # dormant interface - but warning/critical/ignore not requested
+                $state = 'CRITICAL';
+                $answer = "Interface $name (index $snmpkey) is dormant.";
+        }
+} elsif ( $response->{$snmpIfOperStatus} == 6 ) {
+        $state = 'CRITICAL';
+        $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
+} elsif ( $response->{$snmpIfOperStatus} == 7 ) {
+        $state = 'CRITICAL';
+        $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
+} elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4  ) {
+        $state = 'CRITICAL';
+        $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
+} else {
+        $state = 'OK';
+        $answer = "Interface $name (index $snmpkey) is up.";
+}
 
 
 
@@ -259,22 +268,28 @@ sub fetch_ifindex {
         return $snmpkey;
 }
 
-sub usage() {
-  printf "\nMissing arguments!\n";
-  printf "\n";
-  printf "usage: \n";
-  printf "check_ifoperstatus -k <IF_KEY> -H <HOSTNAME> [-C <community>]\n";
-  printf "Copyright (C) 2000 Christoph Kron\n";
-  printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
-  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 $ERRORS{"UNKNOWN"};
+sub usage($) {
+        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";
+        printf "Copyright (C) 2000 Christoph Kron\n";
+        printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
+        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";
 }
 
 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 "status of a particular network interface on the target host\n";
         printf "\nUsage:\n";
         printf "   -H (--hostname)   Hostname to query - (required)\n";
         printf "   -C (--community)  SNMP read community (defaults to public,\n";
@@ -285,19 +300,20 @@ sub print_help() {
         printf "                        if monitoring with -d\n";
         printf "   -L (--seclevel)   choice of \"noAuthNoPriv\", \"authNoPriv\", or     \"authPriv\"\n";
         printf "   -U (--secname)    username for SNMPv3 context\n";
-        printf "   -c (--context)    SNMPv3 context name (default is empty      string)";
+        printf "   -c (--context)    SNMPv3 context name (default is empty string)\n";
         printf "   -A (--authpass)   authentication password (cleartext ascii or localized key\n";
-        printf "                     in hex with 0x prefix generated by using   \"snmpkey\" utility\n"; 
+        printf "                     in hex with 0x prefix generated by using \"snmpkey\" utility\n"; 
         printf "                     auth password and authEngineID\n";
-        printf "   -a (--authproto)  Authentication protocol ( MD5 or SHA1)\n";
+        printf "   -a (--authproto)  Authentication protocol (MD5 or SHA1)\n";
         printf "   -X (--privpass)   privacy password (cleartext ascii or localized key\n";
-        printf "                     in hex with 0x prefix generated by using   \"snmpkey\" utility\n"; 
+        printf "                     in hex with 0x prefix generated by using \"snmpkey\" utility\n"; 
         printf "                     privacy password and authEngineID\n";
+        printf "   -P (--privproto)  privacy protocol (DES or AES; default: DES)\n";
         printf "   -k (--key)        SNMP IfIndex value\n";
         printf "   -d (--descr)      SNMP ifDescr value\n";
         printf "   -T (--type)       SNMP ifType integer value (see http://www.iana.org/assignments/ianaiftype-mib)\n";
         printf "   -p (--port)       SNMP port (default 161)\n";
-        printf "   -I (--ifmib)      Agent supports IFMIB ifXTable.  Do not use if\n";
+        printf "   -I (--ifmib)      Agent supports IFMIB ifXTable. Do not use if\n";
         printf "                     you don't know what this is. \n";
         printf "   -n (--name)       the value should match the returned ifName\n";
         printf "                     (Implies the use of -I)\n";
@@ -312,7 +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@');
         
 }
 
@@ -327,6 +342,7 @@ sub process_arguments() {
                         "U=s" => \$secname,   "secname=s"   => \$secname,
                         "A=s" => \$authpass,  "authpass=s"  => \$authpass,
                         "X=s" => \$privpass,  "privpass=s"  => \$privpass,
+                        "P=s" => \$privproto,  "privproto=s"  => \$privproto,
                         "c=s" => \$context,   "context=s"   => \$context,
                         "k=i" => \$snmpkey, "key=i",\$snmpkey,
                         "d=s" => \$ifdescr, "descr=s" => \$ifdescr,
@@ -343,12 +359,11 @@ sub process_arguments() {
                         );
 
 
-                                
         if ($status == 0){
                 print_help();
                 exit $ERRORS{'OK'};
         }
-  
+
         if ($opt_V) {
                 print_revision($PROGNAME,'@NP_VERSION@');
                 exit $ERRORS{'OK'};
@@ -360,19 +375,14 @@ 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 snmp key (-k) or a ifDescr (-d) must be provided");
         }
 
-
-        if (defined $name) {
+        if (defined $ifName) {
                 $ifXTable=1;
         }       
 
@@ -387,128 +397,76 @@ sub process_arguments() {
                 $timeout = $TIMEOUT;
         }
 
+        if ($snmp_version !~ /[123]/){
+                $state='UNKNOWN';
+                print ("$state: No support for SNMP v$snmp_version yet\n");
+                exit $ERRORS{$state};
+        }
+
+        %session_opts = (
+                -hostname   => $hostname,
+                -port       => $port,
+                -version    => $snmp_version,
+                -maxmsgsize => $maxmsgsize
+        );
+
+        $session_opts{'-community'} = $community if (defined $community && $snmp_version =~ /[12]/);
+
         if ($snmp_version =~ /3/ ) {
                 # Must define a security level even though default is noAuthNoPriv
                 # v3 requires a security username
-                if (defined $seclevel  && defined $secname) {
+                if (defined $seclevel && defined $secname) {
+                        $session_opts{'-username'} = $secname;
                 
                         # 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 valid 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/ ) {
-                                                $auth = "-authkey => $authpass" ;
+                                                $session_opts{'-authkey'} = $authpass ;
                                         }else{
-                                                $auth = "-authpassword => $authpass";
+                                                $session_opts{'-authpassword'} = $authpass ;
                                         }
                                 }
-                                        
                         }
                         
                         # Privacy (DES encryption) wanted
-                        if ($seclevel eq  'authPriv' ) {
+                        if ($seclevel eq 'authPriv' ) {
                                 if (! defined $privpass) {
-                                        usage();
-                                        exit $ERRORS{"UNKNOWN"};
+                                        usage("Privacy passphrase/key is not defined");
                                 }else{
                                         if ($privpass =~ /^0x/){
-                                                $priv = "-privkey => $privpass";
+                                                $session_opts{'-privkey'} = $privpass;
                                         }else{
-                                                $priv = "-privpassword => $privpass";
+                                                $session_opts{'-privpassword'} = $privpass;
                                         }
                                 }
+
+                                $session_opts{'-privprotocol'} = $privproto if(defined $privproto);
                         }
 
                         # Context name defined or default
-
                         unless ( defined $context) {
                                 $context = "";
                         }
                 
-                
-                
                 }else {
-                                        usage();
-                                        exit $ERRORS{'UNKNOWN'}; ;
+                        usage("Security level or name is not defined");
                 }
         } # end snmpv3
 
 
-        if ( $snmp_version =~ /[12]/ ) {
-        ($session, $error) = Net::SNMP->session(
-                        -hostname  => $hostname,
-                        -community => $community,
-                        -port      => $port,
-                        -version        => $snmp_version,
-                        -maxmsgsize => $maxmsgsize
-                );
-
-                if (!defined($session)) {
-                        $state='UNKNOWN';
-                        $answer=$error;
-                        print ("$state: $answer\n");
-                        exit $ERRORS{$state};
-                }
-        
-        }elsif ( $snmp_version =~ /3/ ) {
-
-                if ($seclevel eq 'noAuthNoPriv') {
-                        ($session, $error) = Net::SNMP->session(
-                                -hostname  => $hostname,
-                                -port      => $port,
-                                -version  => $snmp_version,
-                                -username => $secname,
-                        );
-
-                }elsif ( $seclevel eq 'authNoPriv' ) {
-                        ($session, $error) = Net::SNMP->session(
-                                -hostname  => $hostname,
-                                -port      => $port,
-                                -version  => $snmp_version,
-                                -username => $secname,
-                                $auth,
-                                -authprotocol => $authproto,
-                        );      
-                }elsif ($seclevel eq 'authPriv' ) {
-                        ($session, $error) = Net::SNMP->session(
-                                -hostname  => $hostname,
-                                -port      => $port,
-                                -version  => $snmp_version,
-                                -username => $secname,
-                                $auth,
-                                -authprotocol => $authproto,
-                                $priv
-                        );
-                }
-                                        
-                                        
-                if (!defined($session)) {
-                                        $state='UNKNOWN';
-                                        $answer=$error;
-                                        print ("$state: $answer\n");
-                                        exit $ERRORS{$state};
-                }
-
-        }else{
-                $state='UNKNOWN';
-                print ("$state: No support for SNMP v$snmp_version yet\n");
-                exit $ERRORS{$state};
-        }
-
 }
 ## End validation