mirror of
https://gitlab.isc.org/isc-projects/bind9.git
synced 2025-04-18 09:44:09 +03:00
101 lines
2.5 KiB
Perl
101 lines
2.5 KiB
Perl
#!/usr/bin/perl
|
|
#
|
|
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
|
|
#
|
|
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
#
|
|
# See the COPYRIGHT file distributed with this work for additional
|
|
# information regarding copyright ownership.
|
|
|
|
# This is a tool for sending an arbitrary packet via UDP or TCP to an
|
|
# arbitrary address and port. The packet is specified in a file or on
|
|
# the standard input, in the form of a series of bytes in hexadecimal.
|
|
# Whitespace is ignored, as is anything following a '#' symbol.
|
|
#
|
|
# For example, the following input would generate normal query for
|
|
# isc.org/NS/IN":
|
|
#
|
|
# # QID:
|
|
# 0c d8
|
|
# # header:
|
|
# 01 00 00 01 00 00 00 00 00 00
|
|
# # qname isc.org:
|
|
# 03 69 73 63 03 6f 72 67 00
|
|
# # qtype NS:
|
|
# 00 02
|
|
# # qclass IN:
|
|
# 00 01
|
|
#
|
|
# Note that we do not wait for a response for the server. This is simply
|
|
# a way of injecting arbitrary packets to test server resposnes.
|
|
#
|
|
# Usage: packet.pl [-a <address>] [-p <port>] [-t (udp|tcp)] [filename]
|
|
#
|
|
# If not specified, address defaults to 127.0.0.1, port to 53, protocol
|
|
# to udp, and file to stdin.
|
|
#
|
|
# XXX: Doesn't support IPv6 yet
|
|
|
|
require 5.006.001;
|
|
|
|
use strict;
|
|
use Getopt::Std;
|
|
use IO::File;
|
|
use IO::Socket;
|
|
|
|
sub usage {
|
|
print ("Usage: packet.pl [-a address] [-p port] [-t (tcp|udp)] [file]\n");
|
|
exit 1;
|
|
}
|
|
|
|
my %options={};
|
|
getopts("a:p:t:", \%options);
|
|
|
|
my $addr = "127.0.0.1";
|
|
$addr = $options{a} if defined $options{a};
|
|
|
|
my $port = 53;
|
|
$port = $options{p} if defined $options{p};
|
|
|
|
my $proto = "udp";
|
|
$proto = lc $options{t} if defined $options{t};
|
|
usage if ($proto !~ /^(udp|tcp)$/);
|
|
|
|
my $file = "STDIN";
|
|
if (@ARGV >= 1) {
|
|
my $filename = shift @ARGV;
|
|
open FH, "<$filename" or die "$filename: $!";
|
|
$file = "FH";
|
|
}
|
|
|
|
my $input = "";
|
|
while (defined(my $line = <$file>) ) {
|
|
chomp $line;
|
|
$line =~ s/#.*$//;
|
|
$input .= $line;
|
|
}
|
|
|
|
$input =~ s/\s+//g;
|
|
my $data = pack("H*", $input);
|
|
my $len = length $data;
|
|
|
|
my $output = unpack("H*", $data);
|
|
print ("sending: $output\n");
|
|
|
|
my $sock = IO::Socket::INET->new(PeerAddr => $addr, PeerPort => $port,
|
|
Proto => $proto,) or die "$!";
|
|
|
|
my $bytes;
|
|
if ($proto eq "udp") {
|
|
$bytes = $sock->send($data);
|
|
} else {
|
|
$bytes = $sock->syswrite(pack("n", $len), 2);
|
|
$bytes += $sock->syswrite($data, $len);
|
|
}
|
|
|
|
print ("sent $bytes bytes to $addr:$port\n");
|
|
$sock->close;
|
|
close $file;
|