00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
108 lines
2.9 KiB
Perl
108 lines
2.9 KiB
Perl
#!/usr/bin/perl
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#
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# Copyright (C) 2011, 2012 Internet Systems Consortium, Inc. ("ISC")
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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# Id: packet.pl,v 1.2 2011/04/15 01:02:08 each Exp
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# This is a tool for sending an arbitrary packet via UDP or TCP to an
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# arbitrary address and port. The packet is specified in a file or on
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# the standard input, in the form of a series of bytes in hexidecimal.
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# Whitespace is ignored, as is anything following a '#' symbol.
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#
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# For example, the following input would generate normal query for
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# isc.org/NS/IN":
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#
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# # QID:
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# 0c d8
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# # header:
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# 01 00 00 01 00 00 00 00 00 00
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# # qname isc.org:
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# 03 69 73 63 03 6f 72 67 00
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# # qtype NS:
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# 00 02
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# # qclass IN:
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# 00 01
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#
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# Note that we do not wait for a response for the server. This is simply
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# a way of injecting arbitrary packets to test server resposnes.
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#
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# Usage: packet.pl [-a <address>] [-p <port>] [-t (udp|tcp)] [filename]
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#
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# If not specified, address defaults to 127.0.0.1, port to 53, protocol
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# to udp, and file to stdin.
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#
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# XXX: Doesn't support IPv6 yet
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require 5.006.001;
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use strict;
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use Getopt::Std;
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use IO::File;
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use IO::Socket;
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sub usage {
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print ("Usage: packet.pl [-a address] [-p port] [-t (tcp|udp)] [file]\n");
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exit 1;
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}
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my %options={};
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getopts("a:p:t:", \%options);
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my $addr = "127.0.0.1";
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$addr = $options{a} if defined $options{a};
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my $port = 53;
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$port = $options{p} if defined $options{p};
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my $proto = "udp";
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$proto = lc $options{t} if defined $options{t};
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usage if ($proto !~ /^(udp|tcp)$/);
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my $file = "STDIN";
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if (@ARGV >= 1) {
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my $filename = shift @ARGV;
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open FH, "<$filename" or die "$filename: $!";
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$file = "FH";
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}
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my $input = "";
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while (defined(my $line = <$file>) ) {
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chomp $line;
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$line =~ s/#.*$//;
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$input .= $line;
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}
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$input =~ s/\s+//g;
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my $data = pack("H*", $input);
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my $len = length $data;
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my $output = unpack("H*", $data);
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print ("sending: $output\n");
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my $sock = IO::Socket::INET->new(PeerAddr => $addr, PeerPort => $port,
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Proto => $proto,) or die "$!";
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my $bytes;
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if ($proto eq "udp") {
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$bytes = $sock->send($data);
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} else {
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$bytes = $sock->syswrite(pack("n", $len), 2);
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$bytes += $sock->syswrite($data, $len);
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}
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print ("sent $bytes bytes to $addr:$port\n");
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$sock->close;
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close $file;
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