2 # Copyright 2016-2016 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the OpenSSL license (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 ## Test version negotiation
17 use List::Util qw/max min/;
20 use OpenSSL::Test::Utils qw/anydisabled alldisabled/;
21 setup("no_test_here");
23 my @tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
24 # undef stands for "no limit".
25 my @min_tls_protocols = (undef, "SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
26 my @max_tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3", undef);
28 my @is_tls_disabled = anydisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
30 my $min_tls_enabled; my $max_tls_enabled;
32 # Protocol configuration works in cascades, i.e.,
33 # $no_tls1_1 disables TLSv1.1 and below.
35 # $min_enabled and $max_enabled will be correct if there is at least one
37 foreach my $i (0..$#tls_protocols) {
38 if (!$is_tls_disabled[$i]) {
39 $min_tls_enabled = $i;
44 foreach my $i (0..$#tls_protocols) {
45 if (!$is_tls_disabled[$i]) {
46 $max_tls_enabled = $i;
50 my @dtls_protocols = ("DTLSv1", "DTLSv1.2");
51 # undef stands for "no limit".
52 my @min_dtls_protocols = (undef, "DTLSv1", "DTLSv1.2");
53 my @max_dtls_protocols = ("DTLSv1", "DTLSv1.2", undef);
55 my @is_dtls_disabled = anydisabled("dtls1", "dtls1_2");
57 my $min_dtls_enabled; my $max_dtls_enabled;
59 # $min_enabled and $max_enabled will be correct if there is at least one
61 foreach my $i (0..$#dtls_protocols) {
62 if (!$is_dtls_disabled[$i]) {
63 $min_dtls_enabled = $i;
68 foreach my $i (0..$#dtls_protocols) {
69 if (!$is_dtls_disabled[$i]) {
70 $max_dtls_enabled = $i;
76 return $dtls ? alldisabled("dtls1", "dtls1_2") :
77 alldisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
80 sub generate_version_tests {
83 my $dtls = $method eq "DTLS";
84 # Don't write the redundant "Method = TLS" into the configuration.
85 undef $method if !$dtls;
87 my @protocols = $dtls ? @dtls_protocols : @tls_protocols;
88 my @min_protocols = $dtls ? @min_dtls_protocols : @min_tls_protocols;
89 my @max_protocols = $dtls ? @max_dtls_protocols : @max_tls_protocols;
90 my $min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
91 my $max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
93 if (no_tests($dtls)) {
99 foreach my $c_min (0..$#min_protocols) {
100 my $c_max_min = $c_min == 0 ? 0 : $c_min - 1;
101 foreach my $c_max ($c_max_min..$#max_protocols) {
102 foreach my $s_min (0..$#min_protocols) {
103 my $s_max_min = $s_min == 0 ? 0 : $s_min - 1;
104 foreach my $s_max ($s_max_min..$#max_protocols) {
105 my ($result, $protocol) =
106 expected_result($c_min, $c_max, $s_min, $s_max,
107 $min_enabled, $max_enabled, \@protocols);
109 "name" => "version-negotiation",
111 "MinProtocol" => $min_protocols[$c_min],
112 "MaxProtocol" => $max_protocols[$c_max],
115 "MinProtocol" => $min_protocols[$s_min],
116 "MaxProtocol" => $max_protocols[$s_max],
119 "ExpectedResult" => $result,
120 "ExpectedProtocol" => $protocol,
131 sub generate_resumption_tests {
134 my $dtls = $method eq "DTLS";
135 # Don't write the redundant "Method = TLS" into the configuration.
136 undef $method if !$dtls;
139 #TODO(TLS1.3): This is temporary code while we do not have support for
140 # TLS1.3 resumption. We recalculate min_tls_enabled and
141 # max_tls_enabled, ignoring TLS1.3
142 foreach my $i (0..($#tls_protocols - 1)) {
143 if (!$is_tls_disabled[$i]) {
144 $min_tls_enabled = $i;
148 foreach my $i (0..($#tls_protocols - 1)) {
149 if (!$is_tls_disabled[$i]) {
150 $max_tls_enabled = $i;
154 my @protocols = $dtls ? @dtls_protocols : @tls_protocols;
155 my $min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
156 my $max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
158 if (no_tests($dtls)) {
162 my @server_tests = ();
163 my @client_tests = ();
165 # Obtain the first session against a fixed-version server/client.
166 foreach my $original_protocol($min_enabled..$max_enabled) {
167 # Upgrade or downgrade the server/client max version support and test
168 # that it upgrades, downgrades or resumes the session as well.
169 foreach my $resume_protocol($min_enabled..$max_enabled) {
170 my $resumption_expected;
171 # We should only resume on exact version match.
172 if ($original_protocol eq $resume_protocol) {
173 $resumption_expected = "Yes";
175 $resumption_expected = "No";
178 foreach my $ticket ("SessionTicket", "-SessionTicket") {
179 # Client is flexible, server upgrades/downgrades.
180 push @server_tests, {
181 "name" => "resumption",
184 "MinProtocol" => $protocols[$original_protocol],
185 "MaxProtocol" => $protocols[$original_protocol],
186 "Options" => $ticket,
189 "MaxProtocol" => $protocols[$resume_protocol],
192 "ExpectedProtocol" => $protocols[$resume_protocol],
194 "HandshakeMode" => "Resume",
195 "ResumptionExpected" => $resumption_expected,
198 # Server is flexible, client upgrades/downgrades.
199 push @client_tests, {
200 "name" => "resumption",
202 "MinProtocol" => $protocols[$original_protocol],
203 "MaxProtocol" => $protocols[$original_protocol],
206 "Options" => $ticket,
209 "MaxProtocol" => $protocols[$resume_protocol],
212 "ExpectedProtocol" => $protocols[$resume_protocol],
214 "HandshakeMode" => "Resume",
215 "ResumptionExpected" => $resumption_expected,
222 return (@server_tests, @client_tests);
225 sub expected_result {
226 my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
229 # Adjust for "undef" (no limit).
230 $c_min = $c_min == 0 ? 0 : $c_min - 1;
231 $c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
232 $s_min = $s_min == 0 ? 0 : $s_min - 1;
233 $s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;
235 # We now have at least one protocol enabled, so $min_enabled and
236 # $max_enabled are well-defined.
237 $c_min = max $c_min, $min_enabled;
238 $s_min = max $s_min, $min_enabled;
239 $c_max = min $c_max, $max_enabled;
240 $s_max = min $s_max, $max_enabled;
242 if ($c_min > $c_max) {
243 # Client should fail to even send a hello.
244 # This results in an internal error since the server will be
245 # waiting for input that never arrives.
246 return ("InternalError", undef);
247 } elsif ($s_min > $s_max) {
248 # Server has no protocols, should always fail.
249 return ("ServerFail", undef);
250 } elsif ($s_min > $c_max) {
251 # Server doesn't support the client range.
252 return ("ServerFail", undef);
253 } elsif ($c_min > $s_max) {
254 my @prots = @$protocols;
255 if ($prots[$c_max] eq "TLSv1.3") {
256 # Client will have sent supported_versions, so server will know
257 # that there are no overlapping versions.
258 return ("ServerFail", undef);
260 # Server will try with a version that is lower than the lowest
261 # supported client version.
262 return ("ClientFail", undef);
265 # Server and client ranges overlap.
266 my $max_common = $s_max < $c_max ? $s_max : $c_max;
267 return ("Success", $protocols->[$max_common]);