1 /*
2 * Copyright (C) 2017 Red Hat, Inc.
3 *
4 * Author: Nikos Mavrogiannopoulos
5 *
6 * This file is part of GnuTLS.
7 *
8 * GnuTLS is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * GnuTLS is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>
20 */
21
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25
26 #include <stdio.h>
27 #include <stdlib.h>
28
29 #if defined(_WIN32)
30
main()31 int main()
32 {
33 exit(77);
34 }
35
36 #else
37
38 #include <string.h>
39 #include <sys/types.h>
40 #include <netinet/in.h>
41 #include <sys/socket.h>
42 #include <sys/wait.h>
43 #include <arpa/inet.h>
44 #include <unistd.h>
45 #include <gnutls/gnutls.h>
46 #include <gnutls/dtls.h>
47 #include <signal.h>
48 #include <assert.h>
49
50 #include "cert-common.h"
51 #include "tls13/ext-parse.h"
52 #include "utils.h"
53
54 /* This program tests whether the Post Handshake Auth extension is missing
55 * from both hellos, when not enabled by client.
56 */
57
server_log_func(int level,const char * str)58 static void server_log_func(int level, const char *str)
59 {
60 fprintf(stderr, "server|<%d>| %s", level, str);
61 }
62
client_log_func(int level,const char * str)63 static void client_log_func(int level, const char *str)
64 {
65 fprintf(stderr, "client|<%d>| %s", level, str);
66 }
67
68 #define MAX_BUF 1024
69
client(int fd)70 static void client(int fd)
71 {
72 int ret;
73 gnutls_certificate_credentials_t x509_cred;
74 gnutls_session_t session;
75
76 global_init();
77
78 if (debug) {
79 gnutls_global_set_log_function(client_log_func);
80 gnutls_global_set_log_level(7);
81 }
82
83 gnutls_certificate_allocate_credentials(&x509_cred);
84
85 assert(gnutls_certificate_set_x509_key_mem(x509_cred, &cli_ca3_cert,
86 &cli_ca3_key,
87 GNUTLS_X509_FMT_PEM) >= 0);
88
89 /* Initialize TLS session
90 */
91 gnutls_init(&session, GNUTLS_CLIENT);
92
93 gnutls_handshake_set_timeout(session, 20 * 1000);
94
95 ret = gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.2:+VERS-TLS1.0", NULL);
96 if (ret < 0)
97 fail("cannot set TLS 1.3 priorities\n");
98
99 /* put the anonymous credentials to the current session
100 */
101 gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
102
103 gnutls_transport_set_int(session, fd);
104
105 /* Perform the TLS handshake
106 */
107 do {
108 ret = gnutls_handshake(session);
109 }
110 while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
111
112 /* try if gnutls_reauth() would fail as expected */
113 ret = gnutls_reauth(session, 0);
114 if (ret != GNUTLS_E_INVALID_REQUEST)
115 fail("server: gnutls_reauth did not fail as expected: %s", gnutls_strerror(ret));
116
117 close(fd);
118
119 gnutls_deinit(session);
120
121 gnutls_certificate_free_credentials(x509_cred);
122
123 gnutls_global_deinit();
124 }
125
126 static unsigned server_hello_ok = 0;
127
128 #define TLS_EXT_POST_HANDSHAKE 49
129
hellos_callback(gnutls_session_t session,unsigned int htype,unsigned post,unsigned int incoming,const gnutls_datum_t * msg)130 static int hellos_callback(gnutls_session_t session, unsigned int htype,
131 unsigned post, unsigned int incoming, const gnutls_datum_t *msg)
132 {
133 if (htype == GNUTLS_HANDSHAKE_SERVER_HELLO && post == GNUTLS_HOOK_POST) {
134 if (find_server_extension(msg, TLS_EXT_POST_HANDSHAKE, NULL, NULL)) {
135 fail("Post handshake extension seen in server hello!\n");
136 }
137 server_hello_ok = 1;
138
139 return GNUTLS_E_INTERRUPTED;
140 }
141
142 if (htype != GNUTLS_HANDSHAKE_CLIENT_HELLO || post != GNUTLS_HOOK_PRE)
143 return 0;
144
145 if (find_client_extension(msg, TLS_EXT_POST_HANDSHAKE, NULL, NULL))
146 fail("Post handshake extension seen in client hello with no cert!\n");
147
148 return 0;
149 }
150
server(int fd)151 static void server(int fd)
152 {
153 int ret;
154 char buffer[MAX_BUF + 1];
155 gnutls_session_t session;
156 gnutls_certificate_credentials_t x509_cred;
157
158 /* this must be called once in the program
159 */
160 global_init();
161 memset(buffer, 0, sizeof(buffer));
162
163 if (debug) {
164 gnutls_global_set_log_function(server_log_func);
165 gnutls_global_set_log_level(4711);
166 }
167
168 gnutls_certificate_allocate_credentials(&x509_cred);
169 gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
170 &server_key,
171 GNUTLS_X509_FMT_PEM);
172
173 gnutls_init(&session, GNUTLS_SERVER);
174
175 gnutls_handshake_set_timeout(session, 20 * 1000);
176 gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY,
177 GNUTLS_HOOK_BOTH,
178 hellos_callback);
179
180 /* avoid calling all the priority functions, since the defaults
181 * are adequate.
182 */
183 gnutls_priority_set_direct(session, "NORMAL:+VERS-TLS1.3", NULL);
184
185 gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
186
187 gnutls_transport_set_int(session, fd);
188
189 do {
190 ret = gnutls_handshake(session);
191 if (ret == GNUTLS_E_INTERRUPTED) { /* expected */
192 break;
193 }
194 } while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
195
196 if ((gnutls_session_get_flags(session) & GNUTLS_SFLAGS_POST_HANDSHAKE_AUTH)) {
197 fail("server: session flags did contain GNUTLS_SFLAGS_POST_HANDSHAKE_AUTH\n");
198 }
199
200 if (server_hello_ok == 0) {
201 fail("server: did not verify the server hello contents\n");
202 }
203
204 /* try if gnutls_reauth() would fail as expected */
205 ret = gnutls_reauth(session, 0);
206 if (ret != GNUTLS_E_INVALID_REQUEST)
207 fail("server: gnutls_reauth did not fail as expected: %s", gnutls_strerror(ret));
208
209 close(fd);
210 gnutls_deinit(session);
211
212 gnutls_certificate_free_credentials(x509_cred);
213
214 gnutls_global_deinit();
215
216 if (debug)
217 success("server: client/server hello were verified\n");
218 }
219
ch_handler(int sig)220 static void ch_handler(int sig)
221 {
222 int status = 0;
223 wait(&status);
224 check_wait_status(status);
225 return;
226 }
227
doit(void)228 void doit(void)
229 {
230 int fd[2];
231 int ret;
232 pid_t child;
233
234 signal(SIGCHLD, ch_handler);
235 signal(SIGPIPE, SIG_IGN);
236
237 ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
238 if (ret < 0) {
239 perror("socketpair");
240 exit(1);
241 }
242
243 child = fork();
244 if (child < 0) {
245 perror("fork");
246 fail("fork");
247 exit(1);
248 }
249
250 if (child) {
251 /* parent */
252 close(fd[1]);
253 server(fd[0]);
254 kill(child, SIGTERM);
255 } else {
256 close(fd[0]);
257 client(fd[1]);
258 exit(0);
259 }
260 }
261
262 #endif /* _WIN32 */
263