55 lines
1.3 KiB
Perl
Executable file
55 lines
1.3 KiB
Perl
Executable file
#!/usr/bin/perl
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# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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#
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# SPDX-License-Identifier: MPL-2.0
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, you can obtain one at https://mozilla.org/MPL/2.0/.
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#
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# See the COPYRIGHT file distributed with this work for additional
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# information regarding copyright ownership.
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# Test whether the interfaces on 10.53.0.* are up.
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require 5.001;
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use Cwd 'abs_path';
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use File::Basename;
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use Socket;
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use Getopt::Long;
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my $port = 0;
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my $id = 0;
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GetOptions("p=i" => \$port,
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"i=i" => \$id);
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my @ids;
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if ($id != 0) {
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@ids = ($id);
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} else {
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my $dir = dirname(abs_path($0));
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my $fn = "$dir/ifconfig.sh.in";
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open FH, "< $fn" or die "open < $fn: $!\n";
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while (<FH>) {
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@ids = (1..$1)
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if /^max=(\d+)\s*$/;
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}
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close FH;
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die "could not find max IP address in $fn\n"
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unless @ids > 1;
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}
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foreach $id (@ids) {
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my $addr = pack("C4", 10, 53, 0, $id);
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my $sa = pack_sockaddr_in($port, $addr);
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socket(SOCK, PF_INET, SOCK_STREAM, getprotobyname("tcp"))
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or die "$0: socket: $!\n";
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setsockopt(SOCK, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
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bind(SOCK, $sa)
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or die sprintf("$0: bind(%s, %d): $!\n",
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inet_ntoa($addr), $port);
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close(SOCK);
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}
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