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 foreach my $ticket ("SessionTicket", "-SessionTicket") {
167 # Client is flexible, server upgrades/downgrades.
168 push @server_tests, {
169 "name" => "resumption",
172 "MinProtocol" => $protocols[$original_protocol],
173 "MaxProtocol" => $protocols[$original_protocol],
174 "Options" => $ticket,
177 "MaxProtocol" => $protocols[$resume_protocol],
180 "ExpectedProtocol" => $protocols[$resume_protocol],
182 "HandshakeMode" => "Resume",
183 "ResumptionExpected" => $resumption_expected,
186 # Server is flexible, client upgrades/downgrades.
187 push @client_tests, {
188 "name" => "resumption",
190 "MinProtocol" => $protocols[$original_protocol],
191 "MaxProtocol" => $protocols[$original_protocol],
194 "Options" => $ticket,
197 "MaxProtocol" => $protocols[$resume_protocol],
200 "ExpectedProtocol" => $protocols[$resume_protocol],
202 "HandshakeMode" => "Resume",
203 "ResumptionExpected" => $resumption_expected,
210 if (!disabled("tls1_3") && !$dtls) {
211 push @client_tests, {
212 "name" => "resumption-with-hrr",
221 "ExpectedProtocol" => "TLSv1.3",
223 "HandshakeMode" => "Resume",
224 "ResumptionExpected" => "Yes",
229 return (@server_tests, @client_tests);
232 sub expected_result {
233 my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
236 # Adjust for "undef" (no limit).
237 $c_min = $c_min == 0 ? 0 : $c_min - 1;
238 $c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
239 $s_min = $s_min == 0 ? 0 : $s_min - 1;
240 $s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;
242 # We now have at least one protocol enabled, so $min_enabled and
243 # $max_enabled are well-defined.
244 $c_min = max $c_min, $min_enabled;
245 $s_min = max $s_min, $min_enabled;
246 $c_max = min $c_max, $max_enabled;
247 $s_max = min $s_max, $max_enabled;
249 if ($c_min > $c_max) {
250 # Client should fail to even send a hello.
251 return ("ClientFail", undef);
252 } elsif ($s_min > $s_max) {
253 # Server has no protocols, should always fail.
254 return ("ServerFail", undef);
255 } elsif ($s_min > $c_max) {
256 # Server doesn't support the client range.
257 return ("ServerFail", undef);
258 } elsif ($c_min > $s_max) {
259 my @prots = @$protocols;
260 if ($prots[$c_max] eq "TLSv1.3") {
261 # Client will have sent supported_versions, so server will know
262 # that there are no overlapping versions.
263 return ("ServerFail", undef);
265 # Server will try with a version that is lower than the lowest
266 # supported client version.
267 return ("ClientFail", undef);
270 # Server and client ranges overlap.
271 my $max_common = $s_max < $c_max ? $s_max : $c_max;
272 return ("Success", $protocols->[$max_common]);