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");
24 # undef stands for "no limit".
25 my @min_tls_protocols = (undef, "SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2");
26 my @max_tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", undef);
28 my @is_tls_disabled = anydisabled("ssl3", "tls1", "tls1_1", "tls1_2");
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;
77 my $dtls = $method eq "DTLS";
78 # Don't write the redundant "Method = TLS" into the configuration.
79 undef $method if !$dtls;
81 my @protocols = $dtls ? @dtls_protocols : @tls_protocols;
82 my @min_protocols = $dtls ? @min_dtls_protocols : @min_tls_protocols;
83 my @max_protocols = $dtls ? @max_dtls_protocols : @max_tls_protocols;
84 my $min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
85 my $max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
87 my $no_tests = $dtls ? alldisabled("dtls1", "dtls1_2") :
88 alldisabled("ssl3", "tls1", "tls1_1", "tls1_2");
95 foreach my $c_min (0..$#min_protocols) {
96 my $c_max_min = $c_min == 0 ? 0 : $c_min - 1;
97 foreach my $c_max ($c_max_min..$#max_protocols) {
98 foreach my $s_min (0..$#min_protocols) {
99 my $s_max_min = $s_min == 0 ? 0 : $s_min - 1;
100 foreach my $s_max ($s_max_min..$#max_protocols) {
101 my ($result, $protocol) =
102 expected_result($c_min, $c_max, $s_min, $s_max,
103 $min_enabled, $max_enabled, \@protocols);
105 "name" => "version-negotiation",
107 "MinProtocol" => $min_protocols[$c_min],
108 "MaxProtocol" => $max_protocols[$c_max],
111 "MinProtocol" => $min_protocols[$s_min],
112 "MaxProtocol" => $max_protocols[$s_max],
115 "ExpectedResult" => $result,
116 "Protocol" => $protocol,
127 sub expected_result {
128 my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
131 # Adjust for "undef" (no limit).
132 $c_min = $c_min == 0 ? 0 : $c_min - 1;
133 $c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
134 $s_min = $s_min == 0 ? 0 : $s_min - 1;
135 $s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;
137 # We now have at least one protocol enabled, so $min_enabled and
138 # $max_enabled are well-defined.
139 $c_min = max $c_min, $min_enabled;
140 $s_min = max $s_min, $min_enabled;
141 $c_max = min $c_max, $max_enabled;
142 $s_max = min $s_max, $max_enabled;
144 if ($c_min > $c_max) {
145 # Client should fail to even send a hello.
146 # This results in an internal error since the server will be
147 # waiting for input that never arrives.
148 return ("InternalError", undef);
149 } elsif ($s_min > $s_max) {
150 # Server has no protocols, should always fail.
151 return ("ServerFail", undef);
152 } elsif ($s_min > $c_max) {
153 # Server doesn't support the client range.
154 return ("ServerFail", undef);
155 } elsif ($c_min > $s_max) {
156 # Server will try with a version that is lower than the lowest
157 # supported client version.
158 return ("ClientFail", undef);
160 # Server and client ranges overlap.
161 my $max_common = $s_max < $c_max ? $s_max : $c_max;
162 return ("Success", $protocols->[$max_common]);