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#!/usr/bin/perl

# pmlines.pl
#
# 1998/08/04

#
# Created by  Carlos.Canau@EUnet.pt with cfgmaker  from Tobias Oetiker
# <oetiker@ee.ethz.ch> as skeleton
#
# returns:
# #async
# #digital
# #isdn
# #sync
# #other
#

# 1998/10/30
#
# Modified by Butch Kemper <kemper@tstar.net> to allow multiple PortMasters
# to be specified on the argument line and to output the totals.
#

# 1999/4/18
#
# Modified by Butch Kemper <kemper@tstar.net> to process PM2 systems and
# to distingish between async and isdn ports.
#
# Changed name to PM2lines.pl
#

# 1999/4/19
#
# Modified by Butch Kemper <kemper@tstar.net> to process both PM2 and PM3
# systems.
#
# Changed name to PMlines.pl
#

use SNMP_Session;
use BER;
use Socket;
use strict;

# PMip is livingston.livingstonMib.livingstonInterfaces.livingstonSerial.livingstonSerialTable.livingstonSerialEntry.livingstonSerialIpAddress
# PMty is livingston.livingstonMib.livingstonInterfaces.livingstonSerial.livingstonSerialTable.livingstonSerialEntry.livingstonSerialPhysType

# TODO

# - sum all the calls, connects, detects, renegotiates, and retrains
# from livingstonModemTable.
#
# - think about using livingstonModemStatus instead of
# livingstonSerialIpAddress to count lines in use (not portable to
# PM2)  (or livingstonSerialPortStatus?)

%snmpget::OIDS = ('ifNumber' => '1.3.6.1.2.1.2.1.0',
                  'PMip' => '1.3.6.1.4.1.307.3.2.1.1.1.14',
                  'PMty' => '1.3.6.1.4.1.307.3.2.1.1.1.3',
                  );

my($tot_isdn, $tot_modems, $args) = (0,0,0);
my($tot_isdn, $tot_digitalmodems, $tot_asyncmodems,
   $tot_sync, $tot_other, $args) = (0,0,0,0,0,0);

my($input_string, $PROGNAME, $interfaces)="";
($PROGNAME = $0) =~ s/.*\///;

diexit(0) if $#ARGV < 0;

for ($args=0; $args < $#ARGV+1; $args++) {
    $input_string = $ARGV[$args];
    my($community,$router) = split /\@/, $input_string;

    diexit(0) unless $community && $router;

    $interfaces = snmpget($router,$community,'ifNumber');
    my @PMip = snmpgettable($router,$community,'PMip');
    my @PMty = snmpgettable($router,$community,'PMty');
    my ($i);

    for ($i=0; $i < $#PMip+1; $i++) {
      #
      # instead of livingstonSerialIpAddress we should use livingstonSerialPortStatus
      # and check for "established" (which might be applicable to terminal sessions)
      #
        if ($PMip[$i] ne "0.0.0.0") {
            if ($PMty[$i] == 2) {
                $tot_asyncmodems++;
            } elsif ($PMty[$i] == 3) {
                $tot_sync++;
            } elsif ($PMty[$i] == 5) {
                $tot_digitalmodems++;
            } elsif ($PMty[$i] == 4 || $PMty[$i] == 6 || $PMty[$i] == 7) {
                $tot_isdn++;
            } else {
                $tot_other++;
            }
        }
    }
}

printf "$tot_asyncmodems\n";
printf "$tot_digitalmodems\n";
printf "$tot_isdn\n";
printf "$tot_sync\n";
printf "$tot_other\n";

exit(0);

sub diexit {
    die ("USAGE: $PROGNAME  community\@portmaster [community\@portmaster]" .
        " \.\.\.\n" .
        "       community   = snmp read community string\n" .
        "       portmaster  = FQN of PortMaster\n");
}

sub snmpget{
    my($host,$community,@vars) = @_;
    my(@enoid, $var,$response, $bindings, $binding, $value, $inoid,$outoid,
       $upoid,$oid,@retvals);
    foreach $var (@vars) {
        die "Unknown SNMP var $var\n"
            unless $snmpget::OIDS{$var};
        push @enoid,  encode_oid((split /\./, $snmpget::OIDS{$var}));
    }
    srand();
    my $session = SNMP_Session->open ($host ,
                                      $community,
                                      161);
    if ($session->get_request_response(@enoid)) {
        $response = $session->pdu_buffer;
        ($bindings) = $session->decode_get_response ($response);
        $session->close ();
        while ($bindings) {
            ($binding,$bindings) = decode_sequence ($bindings);
            ($oid,$value) = decode_by_template ($binding, "%O%@");
            # WARNING: this makes getting values such as timeticks in raw form impossible
            my $tempo = pretty_print($value);
            $tempo=~s/\t/ /g;
            $tempo=~s/\n/ /g;
            $tempo=~s/^\s+//;
            $tempo=~s/\s+$//;

            push @retvals,  $tempo;
        }
        return (@retvals);
    } else {
        die "No answer from $input_string. You may be using the wrong community\n";
    }
}

sub snmpgettable{
    my($host,$community,$var) = @_;
    my($next_oid,$enoid,$orig_oid,
       $response, $bindings, $binding, $value, $inoid,$outoid,
       $upoid,$oid,@table,$tempo);
    die "Unknown SNMP var $var\n"
        unless $snmpget::OIDS{$var};

    $orig_oid = encode_oid(split /\./, $snmpget::OIDS{$var});
    $enoid=$orig_oid;
    srand();
    my $session = SNMP_Session->open ($host ,
                                      $community,
                                      161);
    for(;;) {
        if ($session->getnext_request_response(($enoid))) {
            $response = $session->pdu_buffer;
            ($bindings) = $session->decode_get_response ($response);
            ($binding,$bindings) = decode_sequence ($bindings);
            ($next_oid,$value) = decode_by_template ($binding, "%O%@");
            # quit once we are outside the table
            last unless BER::encoded_oid_prefix_p($orig_oid,$next_oid);
            $tempo = pretty_print($value);
            #print "$var: '$tempo'\n";
            $tempo=~s/\t/ /g;
            $tempo=~s/\n/ /g;
            $tempo=~s/^\s+//;
            $tempo=~s/\s+$//;
            push @table, $tempo;
        } else {
            die "No answer from $input_string\n";
        }
        $enoid=$next_oid;
    }
    $session->close ();
    return (@table);
}

# Local Variables:
# mode: perl
# indent-tabs-mode: nil
# tab-width: 4
# perl-indent-level: 4
# End: