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#! /usr/bin/env perl
# Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (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 OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
use OpenSSL::Test::Utils;
use TLSProxy::Proxy;
my $test_name = "test_tls13cookie";
setup($test_name);
plan skip_all => "TLSProxy isn't usable on $^O"
if $^O =~ /^(VMS)$/;
plan skip_all => "$test_name needs the dynamic engine feature enabled"
if disabled("engine") || disabled("dynamic-engine");
plan skip_all => "$test_name needs the sock feature enabled"
if disabled("sock");
plan skip_all => "$test_name needs TLS1.3 enabled"
if disabled("tls1_3") || (disabled("ec") && disabled("dh"));
$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
use constant {
COOKIE_ONLY => 0,
COOKIE_AND_KEY_SHARE => 1
};
my $proxy = TLSProxy::Proxy->new(
undef,
cmdstr(app(["openssl"]), display => 1),
srctop_file("apps", "server.pem"),
(!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
);
my $cookieseen = 0;
my $testtype;
#Test 1: Inserting a cookie into an HRR should see it echoed in the ClientHello
$testtype = COOKIE_ONLY;
$proxy->filter(\&cookie_filter);
$proxy->serverflags("-curves X25519") if !disabled("ec");
$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
plan tests => 2;
SKIP: {
skip "EC disabled", 1, if disabled("ec");
ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
}
#Test 2: Same as test 1 but should also work where a new key_share is also
# required
$testtype = COOKIE_AND_KEY_SHARE;
$proxy->clear();
if (disabled("ec")) {
$proxy->clientflags("-curves ffdhe3072:ffdhe2048");
$proxy->serverflags("-curves ffdhe2048");
} else {
$proxy->clientflags("-curves P-256:X25519");
$proxy->serverflags("-curves X25519");
}
$proxy->start();
ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
sub cookie_filter
{
my $proxy = shift;
# We're only interested in the HRR and both ClientHellos
return if ($proxy->flight > 2);
my $ext = pack "C8",
0x00, 0x06, #Cookie Length
0x00, 0x01, #Dummy cookie data (6 bytes)
0x02, 0x03,
0x04, 0x05;
foreach my $message (@{$proxy->message_list}) {
if ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
&& ${$message->records}[0]->flight == 1) {
$message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE)
if ($testtype == COOKIE_ONLY);
$message->set_extension(TLSProxy::Message::EXT_COOKIE, $ext);
$message->repack();
} elsif ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
if (${$message->records}[0]->flight == 0) {
if ($testtype == COOKIE_ONLY) {
my $ext = pack "C7",
0x00, 0x05, #List Length
0x00, 0x17, #P-256
0x00, 0x01, #key_exchange data length
0xff; #Dummy key_share data
# Trick the server into thinking we got an unacceptable
# key_share
$message->set_extension(
TLSProxy::Message::EXT_KEY_SHARE, $ext);
$message->repack();
}
} else {
#cmp can behave differently dependent on locale
no locale;
my $cookie =
$message->extension_data->{TLSProxy::Message::EXT_COOKIE};
return if !defined($cookie);
return if ($cookie cmp $ext) != 0;
$cookieseen = 1;
}
}
}
}
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