Import OpenSSL 1.1.0h
This commit is contained in:
Steve Dower
339
util/perl/TLSProxy/Record.pm
Normal file
339
util/perl/TLSProxy/Record.pm
Normal file
@@ -0,0 +1,339 @@
|
||||
# Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
|
||||
#
|
||||
# Licensed under the OpenSSL license (the "License"). You may not use
|
||||
# this file except in compliance with the License. You can obtain a copy
|
||||
# in the file LICENSE in the source distribution or at
|
||||
# https://www.openssl.org/source/license.html
|
||||
|
||||
use strict;
|
||||
|
||||
use TLSProxy::Proxy;
|
||||
|
||||
package TLSProxy::Record;
|
||||
|
||||
my $server_ccs_seen = 0;
|
||||
my $client_ccs_seen = 0;
|
||||
my $etm = 0;
|
||||
|
||||
use constant TLS_RECORD_HEADER_LENGTH => 5;
|
||||
|
||||
#Record types
|
||||
use constant {
|
||||
RT_APPLICATION_DATA => 23,
|
||||
RT_HANDSHAKE => 22,
|
||||
RT_ALERT => 21,
|
||||
RT_CCS => 20,
|
||||
RT_UNKNOWN => 100
|
||||
};
|
||||
|
||||
my %record_type = (
|
||||
RT_APPLICATION_DATA, "APPLICATION DATA",
|
||||
RT_HANDSHAKE, "HANDSHAKE",
|
||||
RT_ALERT, "ALERT",
|
||||
RT_CCS, "CCS",
|
||||
RT_UNKNOWN, "UNKNOWN"
|
||||
);
|
||||
|
||||
use constant {
|
||||
VERS_TLS_1_3 => 772,
|
||||
VERS_TLS_1_2 => 771,
|
||||
VERS_TLS_1_1 => 770,
|
||||
VERS_TLS_1_0 => 769,
|
||||
VERS_SSL_3_0 => 768,
|
||||
VERS_SSL_LT_3_0 => 767
|
||||
};
|
||||
|
||||
my %tls_version = (
|
||||
VERS_TLS_1_3, "TLS1.3",
|
||||
VERS_TLS_1_2, "TLS1.2",
|
||||
VERS_TLS_1_1, "TLS1.1",
|
||||
VERS_TLS_1_0, "TLS1.0",
|
||||
VERS_SSL_3_0, "SSL3",
|
||||
VERS_SSL_LT_3_0, "SSL<3"
|
||||
);
|
||||
|
||||
#Class method to extract records from a packet of data
|
||||
sub get_records
|
||||
{
|
||||
my $class = shift;
|
||||
my $server = shift;
|
||||
my $flight = shift;
|
||||
my $packet = shift;
|
||||
my $partial = "";
|
||||
my @record_list = ();
|
||||
my @message_list = ();
|
||||
my $data;
|
||||
my $content_type;
|
||||
my $version;
|
||||
my $len;
|
||||
my $len_real;
|
||||
my $decrypt_len;
|
||||
|
||||
my $recnum = 1;
|
||||
while (length ($packet) > 0) {
|
||||
print " Record $recnum";
|
||||
if ($server) {
|
||||
print " (server -> client)\n";
|
||||
} else {
|
||||
print " (client -> server)\n";
|
||||
}
|
||||
#Get the record header
|
||||
if (length($packet) < TLS_RECORD_HEADER_LENGTH
|
||||
|| length($packet) < 5 + unpack("n", substr($packet, 3, 2))) {
|
||||
print "Partial data : ".length($packet)." bytes\n";
|
||||
$partial = $packet;
|
||||
$packet = "";
|
||||
} else {
|
||||
($content_type, $version, $len) = unpack('CnnC*', $packet);
|
||||
$data = substr($packet, 5, $len);
|
||||
|
||||
print " Content type: ".$record_type{$content_type}."\n";
|
||||
print " Version: $tls_version{$version}\n";
|
||||
print " Length: $len";
|
||||
if ($len == length($data)) {
|
||||
print "\n";
|
||||
$decrypt_len = $len_real = $len;
|
||||
} else {
|
||||
print " (expected), ".length($data)." (actual)\n";
|
||||
$decrypt_len = $len_real = length($data);
|
||||
}
|
||||
|
||||
my $record = TLSProxy::Record->new(
|
||||
$flight,
|
||||
$content_type,
|
||||
$version,
|
||||
$len,
|
||||
0,
|
||||
$len_real,
|
||||
$decrypt_len,
|
||||
substr($packet, TLS_RECORD_HEADER_LENGTH, $len_real),
|
||||
substr($packet, TLS_RECORD_HEADER_LENGTH, $len_real)
|
||||
);
|
||||
|
||||
if (($server && $server_ccs_seen)
|
||||
|| (!$server && $client_ccs_seen)) {
|
||||
if ($etm) {
|
||||
$record->decryptETM();
|
||||
} else {
|
||||
$record->decrypt();
|
||||
}
|
||||
}
|
||||
|
||||
push @record_list, $record;
|
||||
|
||||
#Now figure out what messages are contained within this record
|
||||
my @messages = TLSProxy::Message->get_messages($server, $record);
|
||||
push @message_list, @messages;
|
||||
|
||||
$packet = substr($packet, TLS_RECORD_HEADER_LENGTH + $len_real);
|
||||
$recnum++;
|
||||
}
|
||||
}
|
||||
|
||||
return (\@record_list, \@message_list, $partial);
|
||||
}
|
||||
|
||||
sub clear
|
||||
{
|
||||
$server_ccs_seen = 0;
|
||||
$client_ccs_seen = 0;
|
||||
}
|
||||
|
||||
#Class level accessors
|
||||
sub server_ccs_seen
|
||||
{
|
||||
my $class = shift;
|
||||
if (@_) {
|
||||
$server_ccs_seen = shift;
|
||||
}
|
||||
return $server_ccs_seen;
|
||||
}
|
||||
sub client_ccs_seen
|
||||
{
|
||||
my $class = shift;
|
||||
if (@_) {
|
||||
$client_ccs_seen = shift;
|
||||
}
|
||||
return $client_ccs_seen;
|
||||
}
|
||||
#Enable/Disable Encrypt-then-MAC
|
||||
sub etm
|
||||
{
|
||||
my $class = shift;
|
||||
if (@_) {
|
||||
$etm = shift;
|
||||
}
|
||||
return $etm;
|
||||
}
|
||||
|
||||
sub new
|
||||
{
|
||||
my $class = shift;
|
||||
my ($flight,
|
||||
$content_type,
|
||||
$version,
|
||||
$len,
|
||||
$sslv2,
|
||||
$len_real,
|
||||
$decrypt_len,
|
||||
$data,
|
||||
$decrypt_data) = @_;
|
||||
|
||||
my $self = {
|
||||
flight => $flight,
|
||||
content_type => $content_type,
|
||||
version => $version,
|
||||
len => $len,
|
||||
sslv2 => $sslv2,
|
||||
len_real => $len_real,
|
||||
decrypt_len => $decrypt_len,
|
||||
data => $data,
|
||||
decrypt_data => $decrypt_data,
|
||||
orig_decrypt_data => $decrypt_data,
|
||||
sent => 0
|
||||
};
|
||||
|
||||
return bless $self, $class;
|
||||
}
|
||||
|
||||
#Decrypt using encrypt-then-MAC
|
||||
sub decryptETM
|
||||
{
|
||||
my ($self) = shift;
|
||||
|
||||
my $data = $self->data;
|
||||
|
||||
if($self->version >= VERS_TLS_1_1()) {
|
||||
#TLS1.1+ has an explicit IV. Throw it away
|
||||
$data = substr($data, 16);
|
||||
}
|
||||
|
||||
#Throw away the MAC (assumes MAC is 20 bytes for now. FIXME)
|
||||
$data = substr($data, 0, length($data) - 20);
|
||||
|
||||
#Find out what the padding byte is
|
||||
my $padval = unpack("C", substr($data, length($data) - 1));
|
||||
|
||||
#Throw away the padding
|
||||
$data = substr($data, 0, length($data) - ($padval + 1));
|
||||
|
||||
$self->decrypt_data($data);
|
||||
$self->decrypt_len(length($data));
|
||||
|
||||
return $data;
|
||||
}
|
||||
|
||||
#Standard decrypt
|
||||
sub decrypt()
|
||||
{
|
||||
my ($self) = shift;
|
||||
|
||||
my $data = $self->data;
|
||||
|
||||
if($self->version >= VERS_TLS_1_1()) {
|
||||
#TLS1.1+ has an explicit IV. Throw it away
|
||||
$data = substr($data, 16);
|
||||
}
|
||||
|
||||
#Find out what the padding byte is
|
||||
my $padval = unpack("C", substr($data, length($data) - 1));
|
||||
|
||||
#Throw away the padding
|
||||
$data = substr($data, 0, length($data) - ($padval + 1));
|
||||
|
||||
#Throw away the MAC (assumes MAC is 20 bytes for now. FIXME)
|
||||
$data = substr($data, 0, length($data) - 20);
|
||||
|
||||
$self->decrypt_data($data);
|
||||
$self->decrypt_len(length($data));
|
||||
|
||||
return $data;
|
||||
}
|
||||
|
||||
#Reconstruct the on-the-wire record representation
|
||||
sub reconstruct_record
|
||||
{
|
||||
my $self = shift;
|
||||
my $data;
|
||||
|
||||
if ($self->{sent}) {
|
||||
return "";
|
||||
}
|
||||
$self->{sent} = 1;
|
||||
|
||||
if ($self->sslv2) {
|
||||
$data = pack('n', $self->len | 0x8000);
|
||||
} else {
|
||||
$data = pack('Cnn', $self->content_type, $self->version, $self->len);
|
||||
}
|
||||
$data .= $self->data;
|
||||
|
||||
return $data;
|
||||
}
|
||||
|
||||
#Read only accessors
|
||||
sub flight
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{flight};
|
||||
}
|
||||
sub content_type
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{content_type};
|
||||
}
|
||||
sub version
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{version};
|
||||
}
|
||||
sub sslv2
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{sslv2};
|
||||
}
|
||||
sub len_real
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{len_real};
|
||||
}
|
||||
sub orig_decrypt_data
|
||||
{
|
||||
my $self = shift;
|
||||
return $self->{orig_decrypt_data};
|
||||
}
|
||||
|
||||
#Read/write accessors
|
||||
sub decrypt_len
|
||||
{
|
||||
my $self = shift;
|
||||
if (@_) {
|
||||
$self->{decrypt_len} = shift;
|
||||
}
|
||||
return $self->{decrypt_len};
|
||||
}
|
||||
sub data
|
||||
{
|
||||
my $self = shift;
|
||||
if (@_) {
|
||||
$self->{data} = shift;
|
||||
}
|
||||
return $self->{data};
|
||||
}
|
||||
sub decrypt_data
|
||||
{
|
||||
my $self = shift;
|
||||
if (@_) {
|
||||
$self->{decrypt_data} = shift;
|
||||
}
|
||||
return $self->{decrypt_data};
|
||||
}
|
||||
sub len
|
||||
{
|
||||
my $self = shift;
|
||||
if (@_) {
|
||||
$self->{len} = shift;
|
||||
}
|
||||
return $self->{len};
|
||||
}
|
||||
1;
|
||||
Reference in New Issue
Block a user