Added -M for maxmsgsize (v1/v2c)

Added v3 support


git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@743 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 230 insertions, 93 deletions

diff --git a/plugins-scripts/check_ifstatus.pl b/plugins-scripts/check_ifstatus.pl
index cc9cccf..3372adb 100755
--- a/plugins-scripts/check_ifstatus.pl
+++ b/plugins-scripts/check_ifstatus.pl
@@ -7,6 +7,8 @@
 # Modified 5/2002 to conform to updated Nagios Plugin Guidelines (S. Ghosh)
 #  Added -x option (4/2003)
 #  Added -u option (4/2003)
+#  Added -M option (10/2003)
+#  Added SNMPv3 support (10/2003)
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -40,9 +42,13 @@ Getopt::Long::Configure('bundling');
 
 my $PROGNAME = "check_ifstatus";
 
+sub print_help ();
+sub usage ();
+sub process_arguments ();
+
 
 my $status;
-my %ifOperStatus =      ('1','up',
+my %ifOperStatus =      ('1','up',
                          '2','down',
                          '3','testing',
                          '4','unknown',
@@ -55,6 +61,8 @@ my $snmpkey=0;
 my $snmpoid=0;
 my $key=0;
 my $community = "public";
+my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
+my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
 my $port = 161;
 my @snmpoids;
 my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
@@ -93,98 +101,19 @@ $SIG{'ALRM'} = sub {
      print ("ERROR: No snmp response from $hostname (alarm timeout)\n");
      exit $ERRORS{"UNKNOWN"};
 };
-alarm($TIMEOUT);
-
 
 
 #Option checking
-$status = GetOptions(
-                "V"   => \$opt_V, "version"    => \$opt_V,
-                "h"   => \$opt_h, "help"       => \$opt_h,
-                "v=i" => \$snmp_version, "snmp_version=i"  => \$snmp_version,
-                "C=s" =>\$community,"community=s" => \$community,
-                "p=i" =>\$port, "port=i" => \$port,
-                "H=s" => \$hostname, "hostname=s" => \$hostname,
-                "I"       => \$ifXTable, "ifmib" => \$ifXTable,
-                "x:s"           =>      \$opt_x,   "exclude:s" => \$opt_x,
-                "u=s" => \$opt_u,  "unused_ports=s" => \$opt_u);
-                
-if ($status == 0)
+$status = process_arguments();
+
+if ($status != 0)
 {
         print_help() ;
         exit $ERRORS{'OK'};
 }
 
 
-if ($opt_V) {
-        print_revision($PROGNAME,'$Revision$ ');
-        exit $ERRORS{'OK'};
-}
-
-if ($opt_h) {
-        print_help();
-        exit $ERRORS{'OK'};
-}
-
-
-if (defined $opt_x) {
-        my @x = split(/,/, $opt_x);
-        if ( @x) {
-                foreach $key (@x){
-                        $excluded{$key} = 1;
-                }
-        }else{
-                $excluded{23} = 1; # default PPP(23) if empty list - note (AIX seems to think PPP is 22 according to a post)
-        }
-        #debugging
-        #foreach $x (keys %excluded) 
-        #       { print "key = $x  val = $excluded{$x}\n";}
-}
-
-if ($opt_u) {
-        @unused_ports = split(/,/,$opt_u);
-        foreach $key (@unused_ports) { 
-                $ifStatus{$key}{'notInUse'}++ ;
-        }
-}
-
-if (! utils::is_hostname($hostname)){
-        usage();
-        exit $ERRORS{"UNKNOWN"};
-}
-
-if ( ! $snmp_version ) {
-        $snmp_version =1 ;
-}else{
-        if ( $snmp_version =~ /[12]/ ) {
-                        
-                ($session, $error) = Net::SNMP->session(
-                      -hostname  => $hostname,
-                      -community => $community,
-                      -port      => $port,
-                          -version      => $snmp_version
-                           );
-
-                if (!defined($session)) {
-                      $state='UNKNOWN';
-                      $answer=$error;
-                      print ("$state: $answer");
-                      exit $ERRORS{$state};
-                }
-
-                
-        }elsif ( $snmp_version =~ /3/ ) {
-                $state='UNKNOWN';
-                print ("$state: No support for SNMP v3 yet\n");
-                exit $ERRORS{$state};
-        }else{
-                $state='UNKNOWN';
-                print ("$state: No support for SNMP v$snmp_version yet\n");
-                exit $ERRORS{$state};
-        }
-}
-
-
+alarm($TIMEOUT);
 
 push(@snmpoids,$snmpIfOperStatus);
 push(@snmpoids,$snmpIfAdminStatus);
@@ -205,7 +134,7 @@ foreach $snmpoid (@snmpoids) {
                         if ( ( $snmpoid =~ $snmpIfName ) && defined $ifXTable ) {
                                 print ("$state: Device does not support ifTable - try without -I option\n");
                         }else{
-              print ("$state: $answer for $snmpoid  with snmp version $snmp_version\n");
+                                print ("$state: $answer for $snmpoid  with snmp version $snmp_version\n");
                         }
       exit $ERRORS{$state};
    }
@@ -220,6 +149,8 @@ foreach $snmpoid (@snmpoids) {
 
 $session->close;
 
+alarm(0);
+
 foreach $key (keys %ifStatus) {
 
         # skip unused interfaces
@@ -230,18 +161,18 @@ foreach $key (keys %ifStatus) {
                         # check only if interface type is not listed in %excluded
                         if (!defined $excluded{$ifStatus{$key}{$snmpIfType}} ) {
                                 if ($ifStatus{$key}{$snmpIfOperStatus} == 1 ) { $ifup++ ;}
-                if ($ifStatus{$key}{$snmpIfOperStatus} == 2 ) {
-                        $ifdown++ ;
+                                if ($ifStatus{$key}{$snmpIfOperStatus} == 2 ) {
+                                                                $ifdown++ ;
                                                                 if (defined $ifXTable) {
                                                                         $ifmessage .= sprintf("%s: down -> %s<BR>",
                                 $ifStatus{$key}{$snmpIfName},
-                                                                                                                                $ifStatus{$key}{$snmpIfAlias});
+                                                                                                                                $ifStatus{$key}{$snmpIfAlias});
                                                                 }else{
                                                                         $ifmessage .= sprintf("%s: down <BR>",
                                                                                                                                 $ifStatus{$key}{$snmpIfDescr});
                                                                 }
                                 }
-        if ($ifStatus{$key}{$snmpIfOperStatus} == 5 ) { $ifdormant++ ;}
+                                if ($ifStatus{$key}{$snmpIfOperStatus} == 5 ) { $ifdormant++ ;}
                         }else{
                                 $ifexclude++;
                         }
@@ -278,7 +209,7 @@ print ("$state: $answer |$perfdata\n");
 exit $ERRORS{$state};
 
 
-sub usage {
+sub usage (){
         printf "\nMissing arguments!\n";
         printf "\n";
         printf "check_ifstatus -C <READCOMMUNITY> -p <PORT> -H <HOSTNAME>\n";
@@ -289,24 +220,230 @@ sub usage {
         exit $ERRORS{"UNKNOWN"};
 }
 
-sub print_help {
+sub print_help (){
         printf "check_ifstatus plugin for Nagios monitors operational \n";
-        printf "status of each network interface on the target host\n";
+        printf "status of each 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";
         printf "                     used with SNMP v1 and v2c\n";
         printf "   -v (--snmp_version)  1 for SNMP v1 (default)\n";
         printf "                        2 for SNMP v2c\n";
-        printf "                        SNMP v2c will use get_bulk for less overhead\n";
+        printf "                          SNMP v2c will use get_bulk for less overhead\n";
+        printf "                        3 for SNMPv3 (requires -U option)";
         printf "   -p (--port)       SNMP port (default 161)\n";
         printf "   -I (--ifmib)      Agent supports IFMIB ifXTable.  For Cisco - this will provide\n";
         printf "                     the descriptive name.  Do not use if you don't know what this is. \n";
         printf "   -x (--exclude)    A comma separated list of ifType values that should be excluded \n";
         printf "                     from the report (default for an empty list is PPP(23).\n";
+        printf "   -u (--unused_ports) A comma separated list of ifIndex values that should be excluded \n";
+        printf "                     from the report (default is an empty exclusion list).\n";
         printf "                     See the IANAifType-MIB for a list of interface types.\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 "   -A (--authpass)   authentication password (cleartext ascii or localized key\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 "   -X (--privpass)   privacy password (cleartext ascii or localized key\n";
+        printf "                     in hex with 0x prefix generated by using   \"snmpkey\" utility\n"; 
+        printf "                     privacy password and authEngineID\n";
+        printf "   -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
         printf "   -V (--version)    Plugin version\n";
         printf "   -h (--help)       usage help \n\n";
         print_revision($PROGNAME, '$Revision$');
         
 }
+
+sub process_arguments() {
+        $status = GetOptions(
+                "V"   => \$opt_V, "version"    => \$opt_V,
+                "h"   => \$opt_h, "help"       => \$opt_h,
+                "v=i" => \$snmp_version, "snmp_version=i"  => \$snmp_version,
+                "C=s" => \$community,"community=s" => \$community,
+                "L=s" => \$seclevel, "seclevel=s" => \$seclevel,
+                "a=s" => \$authproto, "authproto=s" => \$authproto,
+                "U=s" => \$secname,   "secname=s"   => \$secname,
+                "A=s" => \$authpass,  "authpass=s"  => \$authpass,
+                "X=s" => \$privpass,  "privpass=s"  => \$privpass,
+                "c=s" => \$context,   "context=s"   => \$context,
+                "p=i" =>\$port, "port=i" => \$port,
+                "H=s" => \$hostname, "hostname=s" => \$hostname,
+                "I"             => \$ifXTable, "ifmib" => \$ifXTable,
+                "x:s"           =>      \$opt_x,   "exclude:s" => \$opt_x,
+                "u=s" => \$opt_u,  "unused_ports=s" => \$opt_u,
+                "M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize);
+                
+        if ($status == 0){
+                print_help() ;
+                exit $ERRORS{'OK'};
+        }
+        if ($opt_V) {
+                print_revision($PROGNAME,'$Revision$ ');
+                exit $ERRORS{'OK'};
+        }
+
+        if ($opt_h) {
+                print_help();
+                exit $ERRORS{'OK'};
+        }
+
+
+        if ($snmp_version =~ /3/ ) {
+                # Must define a security level even though default is noAuthNoPriv
+                # v3 requires a security username
+                if (defined $seclevel  && defined $secname) {
+                
+                        # Must define a security level even though defualt is noAuthNoPriv
+                        unless ($seclevel eq ('noAuthNoPriv' || 'authNoPriv' || 'authPriv' ) ) {
+                                usage();
+                                exit $ERRORS{"UNKNOWN"};
+                        }
+                        
+                        # Authentication wanted
+                        if ($seclevel eq ('authNoPriv' || 'authPriv') ) {
+                
+                                unless ($authproto eq ('MD5' || 'SHA1') ) {
+                                        usage();
+                                        exit $ERRORS{"UNKNOWN"};
+                                }
+
+                                if ( !defined $authpass) {
+                                        usage();
+                                        exit $ERRORS{"UNKNOWN"};
+                                }else{
+                                        if ($authpass =~ /^0x/ ) {
+                                                $auth = "-authkey => $authpass" ;
+                                        }else{
+                                                $auth = "-authpassword => $authpass";
+                                        }
+                                }
+                                        
+                        }
+                        
+                        # Privacy (DES encryption) wanted
+                        if ($seclevel eq  'authPriv' ) {
+                                if (! defined $privpass) {
+                                        usage();
+                                        exit $ERRORS{"UNKNOWN"};
+                                }else{
+                                        if ($privpass =~ /^0x/){
+                                                $priv = "-privkey => $privpass";
+                                        }else{
+                                                $priv = "-privpassword => $privpass";
+                                        }
+                                }
+                        }
+
+                        # Context name defined or default
+
+                        unless ( defined $context) {
+                                $context = "";
+                        }
+                
+                
+                
+                }else {
+                                        usage();
+                                        exit $ERRORS{'UNKNOWN'}; ;
+                }
+        } # end snmpv3
+
+        # for snmp v1 & v2c we default to community = "public"
+        
+        # Excluded interfaces types (ifType) (backup interfaces, dial-on demand interfaces, PPP interfaces
+        if (defined $opt_x) {
+                my @x = split(/,/, $opt_x);
+                if ( @x) {
+                        foreach $key (@x){
+                                $excluded{$key} = 1;
+                        }
+                }else{
+                        $excluded{23} = 1; # default PPP(23) if empty list - note (AIX seems to think PPP is 22 according to a post)
+                }
+        }
+        
+        # Excluded interface ports (ifIndex) - management reasons
+        if ($opt_u) {
+                @unused_ports = split(/,/,$opt_u);
+                foreach $key (@unused_ports) { 
+                        $ifStatus{$key}{'notInUse'}++ ;
+                }
+        }
+
+        if (! utils::is_hostname($hostname)){
+                usage();
+                exit $ERRORS{"UNKNOWN"};
+        }
+
+        # create SNMP session handle based on options passed.
+
+        if ( ! $snmp_version ) {
+                $snmp_version =1 ;
+        }else{
+                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");
+                                        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,
+                                $auth
+                        );      
+                }elsif ($seclevel eq 'authPriv' ) {
+                        ($session, $error) = Net::SNMP->session(
+                                -hostname  => $hostname,
+                                -port      => $port,
+                                -version  => $snmp_version,
+                                -username => $secname,
+                                $auth,
+                                $priv
+                        );
+                }
+                                        
+                                        
+                if (!defined($session)) {
+                                        $state='UNKNOWN';
+                                        $answer=$error;
+                                        print ("$state: $answer");
+                                        exit $ERRORS{$state};
+                }
+                        
+        }else{
+                $state='UNKNOWN';
+                print ("$state: No support for SNMP v$snmp_version yet\n");
+                exit $ERRORS{$state};
+        }
+}
+
+return $ERRORS{"OK"};
+                                
+}