1#!/usr/bin/perl 2 3# Copyright (C) Internet Systems Consortium, Inc. ("ISC") 4# 5# SPDX-License-Identifier: MPL-2.0 6# 7# This Source Code Form is subject to the terms of the Mozilla Public 8# License, v. 2.0. If a copy of the MPL was not distributed with this 9# file, you can obtain one at https://mozilla.org/MPL/2.0/. 10# 11# See the COPYRIGHT file distributed with this work for additional 12# information regarding copyright ownership. 13 14# Test whether the interfaces on 10.53.0.* are up. 15 16require 5.001; 17 18use Cwd 'abs_path'; 19use File::Basename; 20use Socket; 21use Getopt::Long; 22 23my $port = 0; 24my $id = 0; 25GetOptions("p=i" => \$port, 26 "i=i" => \$id); 27 28my @ids; 29if ($id != 0) { 30 @ids = ($id); 31} else { 32 my $dir = dirname(abs_path($0)); 33 my $fn = "$dir/ifconfig.sh.in"; 34 open FH, "< $fn" or die "open < $fn: $!\n"; 35 while (<FH>) { 36 @ids = (1..$1) 37 if /^max=(\d+)\s*$/; 38 } 39 close FH; 40 die "could not find max IP address in $fn\n" 41 unless @ids > 1; 42} 43 44foreach $id (@ids) { 45 my $addr = pack("C4", 10, 53, 0, $id); 46 my $sa = pack_sockaddr_in($port, $addr); 47 socket(SOCK, PF_INET, SOCK_STREAM, getprotobyname("tcp")) 48 or die "$0: socket: $!\n"; 49 setsockopt(SOCK, SOL_SOCKET, SO_REUSEADDR, pack("l", 1)); 50 51 bind(SOCK, $sa) 52 or die sprintf("$0: bind(%s, %d): $!\n", 53 inet_ntoa($addr), $port); 54 close(SOCK); 55} 56