summaryrefslogtreecommitdiffstats
path: root/test/recipes/70-test_sslextension.t
blob: 20e1933f0054162277d18f367a6dd68aeefba9f7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
#! /usr/bin/env perl
# Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

use strict;
use feature 'state';

use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
use OpenSSL::Test::Utils;
use TLSProxy::Proxy;

my $test_name = "test_sslextension";
setup($test_name);

plan skip_all => "TLSProxy isn't usable on $^O"
    if $^O =~ /^(VMS)$/;

plan skip_all => "$test_name needs the dynamic engine feature enabled"
    if disabled("engine") || disabled("dynamic-engine");

plan skip_all => "$test_name needs the sock feature enabled"
    if disabled("sock");

plan skip_all => "$test_name needs TLS enabled"
    if alldisabled(available_protocols("tls"));

my $no_below_tls13 = alldisabled(("tls1", "tls1_1", "tls1_2"))
                     || (!disabled("tls1_3") && disabled("tls1_2"));

use constant {
    UNSOLICITED_SERVER_NAME => 0,
    UNSOLICITED_SERVER_NAME_TLS13 => 1,
    UNSOLICITED_SCT => 2,
    NONCOMPLIANT_SUPPORTED_GROUPS => 3
};

my $testtype;
my $fatal_alert = 0;    # set by filter on fatal alert

$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
my $proxy = TLSProxy::Proxy->new(
    \&inject_duplicate_extension_clienthello,
    cmdstr(app(["openssl"]), display => 1),
    srctop_file("apps", "server.pem"),
    (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
);


sub extension_filter
{
    my $proxy = shift;

    if ($proxy->flight == 1) {
        # Change the ServerRandom so that the downgrade sentinel doesn't cause
        # the connection to fail
        my $message = ${$proxy->message_list}[1];
        $message->random("\0"x32);
        $message->repack();
        return;
    }

    # We're only interested in the initial ClientHello
    if ($proxy->flight != 0) {
        return;
    }

    foreach my $message (@{$proxy->message_list}) {
        if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
            # Remove all extensions and set the extension len to zero
            $message->extension_data({});
            $message->extensions_len(0);
            # Extensions have been removed so make sure we don't try to use them
            $message->process_extensions();

            $message->repack();
        }
    }
}

sub inject_duplicate_extension
{
  my ($proxy, $message_type) = @_;

    foreach my $message (@{$proxy->message_list}) {
        if ($message->mt == $message_type) {
          my %extensions = %{$message->extension_data};
            # Add a duplicate (unknown) extension.
            $message->set_extension(TLSProxy::Message::EXT_DUPLICATE_EXTENSION, "");
            $message->set_extension(TLSProxy::Message::EXT_DUPLICATE_EXTENSION, "");
            $message->repack();
        }
    }
}

sub inject_duplicate_extension_clienthello
{
    my $proxy = shift;

    # We're only interested in the initial ClientHello
    if ($proxy->flight == 0) {
        inject_duplicate_extension($proxy, TLSProxy::Message::MT_CLIENT_HELLO);
        return;
    }

    my $last_record = @{$proxy->{record_list}}[-1];
    $fatal_alert = 1 if $last_record->is_fatal_alert(1);
}

sub inject_duplicate_extension_serverhello
{
    my $proxy = shift;

    # We're only interested in the initial ServerHello
    if ($proxy->flight == 0) {
        return;
    } elsif ($proxy->flight == 1) {
        inject_duplicate_extension($proxy, TLSProxy::Message::MT_SERVER_HELLO);
        return;
    }

    my $last_record = @{$proxy->{record_list}}[-1];
    $fatal_alert = 1 if $last_record->is_fatal_alert(0);
}

sub inject_unsolicited_extension
{
    my $proxy = shift;
    my $message;
    state $sent_unsolisited_extension;

    if ($proxy->flight == 0) {
        $sent_unsolisited_extension = 0;
        return;
    }

    # We're only interested in the initial ServerHello/EncryptedExtensions
    if ($proxy->flight != 1) {
        if ($sent_unsolisited_extension) {
            my $last_record = @{$proxy->record_list}[-1];
            $fatal_alert = 1 if $last_record->is_fatal_alert(0);
        }
        return;
    }

    if ($testtype == UNSOLICITED_SERVER_NAME_TLS13) {
        return if (!defined($message = ${$proxy->message_list}[2]));
        die "Expecting EE message ".($message->mt).","
                                   .${$proxy->message_list}[1]->mt.", "
                                   .${$proxy->message_list}[3]->mt
            if $message->mt != TLSProxy::Message::MT_ENCRYPTED_EXTENSIONS;
    } else {
        $message = ${$proxy->message_list}[1];
    }

    my $ext = pack "C2",
        0x00, 0x00; #Extension length

    my $type;
    if ($testtype == UNSOLICITED_SERVER_NAME
            || $testtype == UNSOLICITED_SERVER_NAME_TLS13) {
        $type = TLSProxy::Message::EXT_SERVER_NAME;
    } elsif ($testtype == UNSOLICITED_SCT) {
        $type = TLSProxy::Message::EXT_SCT;
    } elsif ($testtype == NONCOMPLIANT_SUPPORTED_GROUPS) {
        $type = TLSProxy::Message::EXT_SUPPORTED_GROUPS;
    }
    $message->set_extension($type, $ext);
    $message->repack();
    $sent_unsolisited_extension = 1;
}

# Test 1-2: Sending a duplicate extension should fail.
$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
plan tests => 7;
ok($fatal_alert, "Duplicate ClientHello extension");

$fatal_alert = 0;
$proxy->clear();
$proxy->filter(\&inject_duplicate_extension_serverhello);
$proxy->start();
ok($fatal_alert, "Duplicate ServerHello extension");

SKIP: {
    skip "TLS <= 1.2 disabled", 3 if $no_below_tls13;

    #Test 3: Sending a zero length extension block should pass
    $proxy->clear();
    $proxy->filter(\&extension_filter);
    $proxy->start();
    ok(TLSProxy::Message->success, "Zero extension length test");

    #Test 4: Inject an unsolicited extension (<= TLSv1.2)
    $fatal_alert = 0;
    $proxy->clear();
    $proxy->filter(\&inject_unsolicited_extension);
    $testtype = UNSOLICITED_SERVER_NAME;
    $proxy->clientflags("-no_tls1_3 -noservername");
    $proxy->start();
    ok($fatal_alert, "Unsolicited server name extension");

    #Test 5: Inject a noncompliant supported_groups extension (<= TLSv1.2)
    $proxy->clear();
    $proxy->filter(\&inject_unsolicited_extension);
    $testtype = NONCOMPLIANT_SUPPORTED_GROUPS;
    $proxy->clientflags("-no_tls1_3");
    $proxy->start();
    ok(TLSProxy::Message->success(), "Noncompliant supported_groups extension");
}

SKIP: {
    skip "TLS <= 1.2 or CT disabled", 1
        if $no_below_tls13 || disabled("ct");
    #Test 6: Same as above for the SCT extension which has special handling
    $fatal_alert = 0;
    $proxy->clear();
    $testtype = UNSOLICITED_SCT;
    $proxy->clientflags("-no_tls1_3");
    $proxy->start();
    ok($fatal_alert, "Unsolicited sct extension");
}

SKIP: {
    skip "TLS 1.3 disabled", 1 if disabled("tls1_3");
    #Test 7: Inject an unsolicited extension (TLSv1.3)
    $fatal_alert = 0;
    $proxy->clear();
    $proxy->filter(\&inject_unsolicited_extension);
    $testtype = UNSOLICITED_SERVER_NAME_TLS13;
    $proxy->clientflags("-noservername");
    $proxy->start();
    ok($fatal_alert, "Unsolicited server name extension (TLSv1.3)");
}