2 # Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the Apache License 2.0 (the "License"). You may not use
5 # this file except in compliance with the License. You can obtain a copy
6 # in the file LICENSE in the source distribution or at
7 # https://www.openssl.org/source/license.html
10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
11 use OpenSSL::Test::Utils;
14 my $test_name = "test_sslvertol";
17 plan skip_all => "TLSProxy isn't usable on $^O"
20 plan skip_all => "$test_name needs the dynamic engine feature enabled"
21 if disabled("engine") || disabled("dynamic-engine");
23 plan skip_all => "$test_name needs the sock feature enabled"
26 plan skip_all => "$test_name needs TLS enabled"
27 if alldisabled(available_protocols("tls"));
29 my $proxy = TLSProxy::Proxy->new(
30 \&vers_tolerance_filter,
31 cmdstr(app(["openssl"]), display => 1),
32 srctop_file("apps", "server.pem"),
33 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
36 my @available_tls_versions = ();
37 foreach (available_protocols("tls")) {
38 unless (disabled($_)) {
39 note("Checking enabled protocol $_");
40 m|^([a-z]+)(\d)(_\d)?|;
43 $versionname = 'TLSProxy::Record::VERS_'.uc($1).'_'.$2.$3;
44 note("'$1', '$2', '$3' => $versionname");
46 $versionname = 'TLSProxy::Record::VERS_'.uc($1).'_'.$2.'_0';
47 note("'$1', '$2' => $versionname");
49 push @available_tls_versions, eval $versionname;
52 note("TLS versions we can expect: ", join(", ", @available_tls_versions));
54 #This file does tests without the supported_versions extension.
55 #See 70-test_sslversions.t for tests with supported versions.
57 #Test 1: Asking for TLS1.4 should pass and negotiate the maximum
58 #available TLS version according to configuration below TLS1.3
59 my $client_version = TLSProxy::Record::VERS_TLS_1_4;
60 my $previous_version = tls_version_below(TLSProxy::Record::VERS_TLS_1_3);
61 $proxy->clientflags("-no_tls1_3");
62 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
65 skip "There are too few protocols enabled for test 1", 1
66 unless defined $previous_version;
68 my $record = pop @{$proxy->record_list};
69 ok((note("Record version received: ".$record->version()),
70 TLSProxy::Message->success())
71 && $record->version() == $previous_version,
72 "Version tolerance test, below TLS 1.4 and not TLS 1.3");
75 #Test 2: Asking for TLS1.3 with that disabled should succeed and negotiate
76 #the highest configured TLS version below that.
77 $client_version = TLSProxy::Record::VERS_TLS_1_3;
78 $previous_version = tls_version_below($client_version);
80 skip "There are too few protocols enabled for test 2", 1
81 unless defined $previous_version;
84 $proxy->clientflags("-no_tls1_3");
86 my $record = pop @{$proxy->record_list};
87 ok((note("Record version received: ".$record->version()),
88 TLSProxy::Message->success())
89 && $record->version() == $previous_version,
90 "Version tolerance test, max version but not TLS 1.3");
93 #Test 3: Testing something below SSLv3 should fail. We must disable TLS 1.3
94 #to avoid having the 'supported_versions' extension kick in and override our
96 $client_version = TLSProxy::Record::VERS_SSL_3_0 - 1;
98 $proxy->clientflags("-no_tls1_3");
100 my $record = pop @{$proxy->record_list};
101 ok((note("Record version received: ".
102 (defined $record ? $record->version() : "none")),
103 TLSProxy::Message->fail()),
104 "Version tolerance test, SSL < 3.0");
106 sub vers_tolerance_filter
110 # We're only interested in the initial ClientHello
111 if ($proxy->flight != 0) {
115 foreach my $message (@{$proxy->message_list}) {
116 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
117 #Set the client version
118 #Anything above the max supported version should succeed
119 #Anything below SSLv3 should fail
120 $message->client_version($client_version);
126 sub tls_version_below {
131 foreach (@available_tls_versions) {
132 $res = $_ if $_ < $term;
136 return $available_tls_versions[-1];