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
|
/*
* Copyright (C) 2016 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* GnuTLS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include "utils.h"
#include "eagain-common.h"
#include "cert-common.h"
/* This program tests whether rehandshake without ext master secret works
* even if ext master secret was used initially.
*
* Note that we do not fail gracefully and we simply continue as if
* the extension is still valid. This violates the letter of RFC7627.
*/
const char *side = "";
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
static void try(unsigned onclient)
{
/* Server stuff. */
gnutls_certificate_credentials_t serverx509cred;
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
/* General init. */
global_init();
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(7);
/* Init server */
gnutls_certificate_allocate_credentials(&serverx509cred);
gnutls_certificate_set_x509_key_mem(serverx509cred,
&server_cert, &server_key,
GNUTLS_X509_FMT_PEM);
gnutls_init(&server, GNUTLS_SERVER);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
serverx509cred);
gnutls_priority_set_direct(server, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
/* Init client */
gnutls_certificate_allocate_credentials(&clientx509cred);
gnutls_init(&client, GNUTLS_CLIENT);
gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
gnutls_priority_set_direct(client, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
HANDSHAKE(client, server);
if (gnutls_session_ext_master_secret_status(server) == 0) {
fail("%d: ext master secret was not detected by server\n", onclient);
}
if (gnutls_session_ext_master_secret_status(client) == 0) {
fail("%d: ext master secret was not detected by client\n", onclient);
}
if ((gnutls_session_get_flags(server) & GNUTLS_SFLAGS_EXT_MASTER_SECRET) == 0) {
fail("%d: ext master secret was not detected by server\n", onclient);
}
if ((gnutls_session_get_flags(client) & GNUTLS_SFLAGS_EXT_MASTER_SECRET) == 0) {
fail("%d: ext master secret was not detected by client\n", onclient);
}
if (onclient)
gnutls_priority_set_direct(client, "NORMAL:-VERS-ALL:+VERS-TLS1.2:%NO_SESSION_HASH", NULL);
else
gnutls_priority_set_direct(server, "NORMAL:-VERS-ALL:+VERS-TLS1.2:%NO_SESSION_HASH", NULL);
sret = gnutls_rehandshake(server);
if (debug) {
tls_log_func(0, "gnutls_rehandshake (server)...\n");
tls_log_func(0, gnutls_strerror(sret));
tls_log_func(0, "\n");
}
{
ssize_t n;
char b[1];
n = gnutls_record_recv(client, b, 1);
if (n != GNUTLS_E_REHANDSHAKE)
abort();
}
if (onclient) {
HANDSHAKE_EXPECT(client, server, GNUTLS_E_AGAIN, GNUTLS_E_DECRYPTION_FAILED);
} else {
HANDSHAKE_EXPECT(client, server, GNUTLS_E_AGAIN, GNUTLS_E_DECRYPTION_FAILED);
}
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
gnutls_global_deinit();
}
void doit(void)
{
try(0);
reset_buffers();
try(1);
}
|
