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#!/usr/bin/perl
#
# $Id: aggregate-ios,v 1.6 2001/03/27 22:32:08 shields Exp $
#
# Copyright (c) 2000-2001 by Metromedia Fiber Network Services, Inc.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND METROMEDIA FIBER NETWORK SERVICES,
# INC. ("MFN") DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
# EVENT SHALL MFN BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
# USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
# Metromedia Fiber Network
# 360 Hamilton Avenue
# White Plains, NY 10601
#
# http://www.mmfn.com/
#
# aggregate-ios:
#
# Receive some prefix lists in ios syntax on stdin, feed
# them through aggregate(1), then return the results in
# ios syntax on stdout. Also encodes some filtering policy.
#
# michael.shields@mmfn.com
# based on an sh/awk script by jabley@mfnx.net
use IPC::Open2;
use strict;
my %lists = ();
while (<STDIN>) {
if (/^ip prefix-list (\S+) permit (.*)/
|| /^ip prefix-list (\S+) seq \d+ permit (.*)/) {
$lists{$1} .= "$2\n";
}
}
foreach my $list (sort keys %lists) {
next unless length $lists{$list};
open2(\*RH, \*WH, 'aggregate', '-m32', '-o32')
or die "couldn't open pipe to aggregate: $!\n";
print WH $lists{$list};
close WH or die "couldn't close write pipe to aggregate: $!\n";
while (<RH>) {
chop;
(my $x, my $length) = split m,/,;
print "ip prefix-list $list permit $_";
print " le 24" if $length < 24;
print "\n";
}
close RH or die "couldn't close read pipe to aggregate: $!\n";
}
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