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#!/usr/local/bin/perl -w
# -*- perl -*-
# Cricket: a configuration, polling and data display wrapper for RRD files
#
# Copyright (C) 1998-2002 Jeff R. Allen and WebTV Networks, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
BEGIN {
my $programdir = (($0 =~ m:^(.*/):)[0] || "./") . "..";
eval "require '$programdir/cricket-conf.pl'";
eval "require '/usr/local/etc/cricket-conf.pl'"
unless $Common::global::gInstallRoot;
$Common::global::gInstallRoot ||= $programdir;
}
use lib "$Common::global::gInstallRoot/lib";
use strict;
use snmpUtils;
use Common::Options;
use Common::Log;
# Default the log level high enough to ignore warnings, unless they
# ask for them with "./listInterfaces -loglevel warn". This is so
# that when we get warnings for trying to talk to extended mibs, the
# user does not freak out.
unshift @ARGV, "-logLevel", "error";
my(%suppress) =();
my($bytes) = 0;
my($usage) = 0;
my($redback) = 0;
my($cisco) = 0;
my($useifnamekey) = 0;
my($useifdesckey) = 0;
my($usealias) = 0;
my($usedescr) = 0;
my($units) = "bits";
my($showspeed) = 0;
Common::Options::commonOptions(
"speed!", \$showspeed,
"ifname!", \$useifnamekey,
"ifdesc!", \$useifdesckey,
"alias!", \$usealias,
"descript!", \$usedescr,
"redback!", \$redback,
"cisco!", \$cisco,
"bytes|b!", \$bytes,
"help|usage|h|?!", \$usage,
"suppress=s@", \@main::suppress
);
if ($cisco && $redback) {
$usage = 1;
} elsif ($cisco) {
$showspeed = 1;
$useifdesckey = 1;
$usealias = 1;
$useifnamekey = 0;
$usedescr = 0;
} elsif ($redback) {
$showspeed = 1;
$useifnamekey = 1;
$usedescr = 1;
$useifdesckey = 0;
$usealias = 0;
} else {
$useifdesckey = 1 if ! $useifnamekey;
$usealias = 1 if ! $usedescr;
}
if ($#ARGV+1 < 1 || $#ARGV+1 > 2 || $usage) {
print STDERR "Usage: $0 [options] hostname [community]\n";
print STDERR "\tcommunity will default to public if you don't give it.\n\n";
print STDERR "Options:\n";
print STDERR " --help or --usage or -? show this message\n";
print STDERR " --speed \tinclude interface speed in output (platform-dependent)\n";
print STDERR " --ifdesc \tuse ifDescr as interface key (default)\n";
print STDERR " --ifname \tuse ifName as interface key instead of ifDescr\n";
print STDERR " --alias \tuse ifAlias as interface description (default)\n";
print STDERR " --descr \tuse ifDescr as interface description\n";
print STDERR " --bytes \tuse units of bytes (default bits)\n";
print STDERR " --cisco \tsame as --speed --ifdesc --alias \n";
print STDERR " --redback \tsame as --speed --ifname --descr \n";
print STDERR " --suppress [pattern] \tignore/skip interfaces matching pattern\n";
print STDERR " \t\tMultiple --suppress entries may be used.\n\n";
print STDERR "Examples:\n";
print STDERR " $0 --cisco --suppress BVI --suppress Loop mycisco mySNMP\n";;
print STDERR "Generate interfaces config for a Cisco, including speed information \n";
print STDERR "per interface but skipping loopback and BVI (bridge) interfaces \n";
exit 1;
}
$units = "bytes" if $bytes;
my($router) = $ARGV[0];
my($community) = "public";
$community = $ARGV[1] unless (!defined($ARGV[1]));
my($snmp) = "$community\@$router";
print "target --default--\n";
print " router = $router\n";
print "\n";
my($ifDescr) = '1.3.6.1.2.1.2.2.1.2';
my($ifName) = '1.3.6.1.2.1.31.1.1.1.1';
my($ifAlias) = '1.3.6.1.2.1.31.1.1.1.18';
my($interface_key) = '.' . $ifDescr;
$interface_key = '.' . $ifName if $useifnamekey;
my($interface_name) = $ifAlias;
$interface_name = $ifDescr if $usedescr;
## print("# Read with ifName key $interface_key\n") if $useifnamekey;
my($outputme) = 0;
my($test)= "";
my($row);
foreach $row (snmpUtils::walk($snmp, $interface_key)) {
my($oid, $value) = split(/:/, $row, 2);
$oid =~ s/$interface_key//;
my($stat) = snmpUtils::get($snmp, "1.3.6.1.2.1.2.2.1.7.$oid");
my($connector) = snmpUtils::get($snmp, "1.3.6.1.2.1.31.1.1.1.17.$oid");
my($desc) = snmpUtils::get($snmp, "$interface_name.$oid");
my($ifSpeed) = snmpUtils::get($snmp, "1.3.6.1.2.1.2.2.1.5.$oid");
# Sanitize $desc value because current Redback SNMP implementation
# as of 11/2000 returns corrupted garbage in ifDescr sometimes.
$desc =~ tr/!-~/ /cs; # convert all non-printable ASCIIs to a space
# second fetched value is oper status -- use it to decide which
# targets to print
$outputme = ($stat == 1);
# suppress array is list of strings to be pattern-matched to
# decide whether we ignore this interface.
TEST: foreach $test (@main::suppress) {
if ($outputme && $value =~ m/$test/) {
$outputme = 0;
last TEST;
}
}
if ($outputme) {
my($target) = $value;
$target =~ s/[\/\s:]/\_/g;
print "target $target\n";
output("interface-name", $value);
output("short-desc", $desc);
if ($showspeed && $ifSpeed) {
output("if-speed", $ifSpeed);
output("fmt-speed", fmispeed($ifSpeed, $units));
}
# experience shows that subinterfaces (like those
# representing the endpoints of PVCs riding on a
# frame relay link) need a special config.
if (defined($connector) && $connector == 2) {
output("target-type", "sub-interface");
}
print "\n";
}
}
sub output {
my($name, $value) = @_;
my($quote) = '';
if (defined($value)) {
# quote empty (or white-space only) lines, or lines which
# will have embedded spaces.
$quote = '"' if ($value =~ /^\s*$/ || $value =~ /\s/);
print "\t$name = $quote$value$quote\n";
}
}
sub fmispeed {
my($number, $units) = @_;
my @short;
if ($units eq "bytes") {
@short = ("Bytes/sec","kBytes/sec","MBytes/sec","GBytes/sec");
} else {
@short = ("bits/sec","kbits/sec","Mbits/sec","Gbits/sec");
}
my $digits = length("".$number);
my $divm = 0;
while ($digits - $divm*3 > 3) { $divm++; }
my $divnum = $number/10**($divm*3);
if ($divnum == int $divnum) {
return sprintf("%1d %s", $divnum, $short[$divm]);
}
return sprintf("%1.3f %s", $divnum, $short[$divm]);
}
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