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- #! /usr/bin/env perl
- # Copyright 2015-2018 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;
- use File::Temp qw(tempfile);
- use constant {
- REVERSE_ORDER_VERSIONS => 1,
- UNRECOGNISED_VERSIONS => 2,
- NO_EXTENSION => 3,
- EMPTY_EXTENSION => 4,
- TLS1_1_AND_1_0_ONLY => 5,
- WITH_TLS1_4 => 6,
- BAD_LEGACY_VERSION => 7
- };
- my $testtype;
- my $test_name = "test_sslversions";
- setup($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, TLS1.2 and TLS1.1 enabled"
- if disabled("tls1_3") || disabled("tls1_2") || disabled("tls1_1");
- $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
- my $proxy = TLSProxy::Proxy->new(
- undef,
- cmdstr(app(["openssl"]), display => 1),
- srctop_file("apps", "server.pem"),
- (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
- );
- #We're just testing various negative and unusual scenarios here. ssltest with
- #02-protocol-version.conf should check all the various combinations of normal
- #version neg
- #Test 1: An empty supported_versions extension should not succeed
- $testtype = EMPTY_EXTENSION;
- $proxy->filter(\&modify_supported_versions_filter);
- $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
- plan tests => 8;
- ok(TLSProxy::Message->fail(), "Empty supported versions");
- #Test 2: supported_versions extension with no recognised versions should not
- #succeed
- $proxy->clear();
- $testtype = UNRECOGNISED_VERSIONS;
- $proxy->start();
- ok(TLSProxy::Message->fail(), "No recognised versions");
- #Test 3: No supported versions extensions should succeed and select TLSv1.2
- $proxy->clear();
- $testtype = NO_EXTENSION;
- $proxy->start();
- my $record = pop @{$proxy->record_list};
- ok(TLSProxy::Message->success()
- && $record->version() == TLSProxy::Record::VERS_TLS_1_2,
- "No supported versions extension");
- #Test 4: No supported versions extensions should fail if only TLS1.3 available
- $proxy->clear();
- $proxy->serverflags("-tls1_3");
- $proxy->start();
- ok(TLSProxy::Message->fail(), "No supported versions extension (only TLS1.3)");
- #Test 5: supported versions extension with best version last should succeed
- #and select TLSv1.3
- $proxy->clear();
- $testtype = REVERSE_ORDER_VERSIONS;
- $proxy->start();
- $record = pop @{$proxy->record_list};
- ok(TLSProxy::Message->success()
- && $record->version() == TLSProxy::Record::VERS_TLS_1_2
- && TLSProxy::Proxy->is_tls13(),
- "Reverse order versions");
- #Test 6: no TLSv1.3 or TLSv1.2 version in supported versions extension, but
- #TLSv1.1 and TLSv1.0 are present. Should just use TLSv1.1 and succeed
- $proxy->clear();
- $testtype = TLS1_1_AND_1_0_ONLY;
- $proxy->start();
- $record = pop @{$proxy->record_list};
- ok(TLSProxy::Message->success()
- && $record->version() == TLSProxy::Record::VERS_TLS_1_1,
- "TLS1.1 and TLS1.0 in supported versions extension only");
- #Test 7: TLS1.4 and TLS1.3 in supported versions. Should succeed and use TLS1.3
- $proxy->clear();
- $testtype = WITH_TLS1_4;
- $proxy->start();
- $record = pop @{$proxy->record_list};
- ok(TLSProxy::Message->success()
- && $record->version() == TLSProxy::Record::VERS_TLS_1_2
- && TLSProxy::Proxy->is_tls13(),
- "TLS1.4 in supported versions extension");
- #Test 8: Set the legacy version to SSLv3 with supported versions. Should fail
- $proxy->clear();
- $testtype = BAD_LEGACY_VERSION;
- $proxy->start();
- ok(TLSProxy::Message->fail(), "Legacy version is SSLv3 with supported versions");
- sub modify_supported_versions_filter
- {
- my $proxy = shift;
- if ($proxy->flight == 1) {
- # Change the ServerRandom so that the downgrade sentinel doesn't cause
- # the connection to fail
- my $message = ${$proxy->message_list}[1];
- return if (!defined $message);
- $message->random("\0"x32);
- $message->repack();
- return;
- }
- # We're only interested in the initial ClientHello
- if ($proxy->flight != 0) {
- return;
- }
- foreach my $message (@{$proxy->message_list}) {
- if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
- my $ext;
- if ($testtype == REVERSE_ORDER_VERSIONS) {
- $ext = pack "C5",
- 0x04, # Length
- 0x03, 0x03, #TLSv1.2
- 0x03, 0x04; #TLSv1.3
- } elsif ($testtype == UNRECOGNISED_VERSIONS) {
- $ext = pack "C5",
- 0x04, # Length
- 0x04, 0x04, #Some unrecognised version
- 0x04, 0x03; #Another unrecognised version
- } elsif ($testtype == TLS1_1_AND_1_0_ONLY) {
- $ext = pack "C5",
- 0x04, # Length
- 0x03, 0x02, #TLSv1.1
- 0x03, 0x01; #TLSv1.0
- } elsif ($testtype == WITH_TLS1_4) {
- $ext = pack "C5",
- 0x04, # Length
- 0x03, 0x05, #TLSv1.4
- 0x03, 0x04; #TLSv1.3
- }
- if ($testtype == REVERSE_ORDER_VERSIONS
- || $testtype == UNRECOGNISED_VERSIONS
- || $testtype == TLS1_1_AND_1_0_ONLY
- || $testtype == WITH_TLS1_4) {
- $message->set_extension(
- TLSProxy::Message::EXT_SUPPORTED_VERSIONS, $ext);
- } elsif ($testtype == EMPTY_EXTENSION) {
- $message->set_extension(
- TLSProxy::Message::EXT_SUPPORTED_VERSIONS, "");
- } elsif ($testtype == NO_EXTENSION) {
- $message->delete_extension(
- TLSProxy::Message::EXT_SUPPORTED_VERSIONS);
- } else {
- # BAD_LEGACY_VERSION
- $message->client_version(TLSProxy::Record::VERS_SSL_3_0);
- }
- $message->repack();
- }
- }
- }
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