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 disabled/;
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 for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1); $sctp++) {
100 foreach my $c_min (0..$#min_protocols) {
101 my $c_max_min = $c_min == 0 ? 0 : $c_min - 1;
102 foreach my $c_max ($c_max_min..$#max_protocols) {
103 foreach my $s_min (0..$#min_protocols) {
104 my $s_max_min = $s_min == 0 ? 0 : $s_min - 1;
105 foreach my $s_max ($s_max_min..$#max_protocols) {
106 my ($result, $protocol) =
107 expected_result($c_min, $c_max, $s_min, $s_max,
108 $min_enabled, $max_enabled,
111 "name" => "version-negotiation",
113 "MinProtocol" => $min_protocols[$c_min],
114 "MaxProtocol" => $max_protocols[$c_max],
117 "MinProtocol" => $min_protocols[$s_min],
118 "MaxProtocol" => $max_protocols[$s_max],
121 "ExpectedResult" => $result,
122 "ExpectedProtocol" => $protocol,
126 $tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
135 sub generate_resumption_tests {
138 my $dtls = $method eq "DTLS";
139 # Don't write the redundant "Method = TLS" into the configuration.
140 undef $method if !$dtls;
142 my @protocols = $dtls ? @dtls_protocols : @tls_protocols;
143 my $min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
144 my $max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
146 if (no_tests($dtls)) {
150 my @server_tests = ();
151 my @client_tests = ();
153 # Obtain the first session against a fixed-version server/client.
154 foreach my $original_protocol($min_enabled..$max_enabled) {
155 # Upgrade or downgrade the server/client max version support and test
156 # that it upgrades, downgrades or resumes the session as well.
157 foreach my $resume_protocol($min_enabled..$max_enabled) {
158 my $resumption_expected;
159 # We should only resume on exact version match.
160 if ($original_protocol eq $resume_protocol) {
161 $resumption_expected = "Yes";
163 $resumption_expected = "No";
166 for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1);
168 foreach my $ticket ("SessionTicket", "-SessionTicket") {
169 # Client is flexible, server upgrades/downgrades.
170 push @server_tests, {
171 "name" => "resumption",
174 "MinProtocol" => $protocols[$original_protocol],
175 "MaxProtocol" => $protocols[$original_protocol],
176 "Options" => $ticket,
179 "MaxProtocol" => $protocols[$resume_protocol],
182 "ExpectedProtocol" => $protocols[$resume_protocol],
184 "HandshakeMode" => "Resume",
185 "ResumptionExpected" => $resumption_expected,
188 $server_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
189 # Server is flexible, client upgrades/downgrades.
190 push @client_tests, {
191 "name" => "resumption",
193 "MinProtocol" => $protocols[$original_protocol],
194 "MaxProtocol" => $protocols[$original_protocol],
197 "Options" => $ticket,
200 "MaxProtocol" => $protocols[$resume_protocol],
203 "ExpectedProtocol" => $protocols[$resume_protocol],
205 "HandshakeMode" => "Resume",
206 "ResumptionExpected" => $resumption_expected,
209 $client_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
215 if (!disabled("tls1_3") && !$dtls) {
216 push @client_tests, {
217 "name" => "resumption-with-hrr",
226 "ExpectedProtocol" => "TLSv1.3",
228 "HandshakeMode" => "Resume",
229 "ResumptionExpected" => "Yes",
234 return (@server_tests, @client_tests);
237 sub expected_result {
238 my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
241 # Adjust for "undef" (no limit).
242 $c_min = $c_min == 0 ? 0 : $c_min - 1;
243 $c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
244 $s_min = $s_min == 0 ? 0 : $s_min - 1;
245 $s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;
247 # We now have at least one protocol enabled, so $min_enabled and
248 # $max_enabled are well-defined.
249 $c_min = max $c_min, $min_enabled;
250 $s_min = max $s_min, $min_enabled;
251 $c_max = min $c_max, $max_enabled;
252 $s_max = min $s_max, $max_enabled;
254 if ($c_min > $c_max) {
255 # Client should fail to even send a hello.
256 return ("ClientFail", undef);
257 } elsif ($s_min > $s_max) {
258 # Server has no protocols, should always fail.
259 return ("ServerFail", undef);
260 } elsif ($s_min > $c_max) {
261 # Server doesn't support the client range.
262 return ("ServerFail", undef);
263 } elsif ($c_min > $s_max) {
264 my @prots = @$protocols;
265 if ($prots[$c_max] eq "TLSv1.3") {
266 # Client will have sent supported_versions, so server will know
267 # that there are no overlapping versions.
268 return ("ServerFail", undef);
270 # Server will try with a version that is lower than the lowest
271 # supported client version.
272 return ("ClientFail", undef);
275 # Server and client ranges overlap.
276 my $max_common = $s_max < $c_max ? $s_max : $c_max;
277 return ("Success", $protocols->[$max_common]);