1 /*
2 * Copyright (C) 2004-2012 Free Software Foundation, Inc.
3 *
4 * Author: Thierry Quemerais
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 General Public License
19 * along with GnuTLS; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
21 */
22
23 /* Parts copied from GnuTLS example programs. */
24
25 #ifdef HAVE_CONFIG_H
26 #include <config.h>
27 #endif
28
29 #include <stdio.h>
30 #include <stdlib.h>
31
32 #if defined(_WIN32)
33
34 /* socketpair isn't supported on Win32. */
main(int argc,char ** argv)35 int main(int argc, char **argv)
36 {
37 exit(77);
38 }
39
40 #else
41
42 #include <string.h>
43 #include <sys/types.h>
44 #include <sys/socket.h>
45 #if !defined(_WIN32)
46 #include <sys/wait.h>
47 #include <signal.h>
48 #endif
49 #include <unistd.h>
50 #include <gnutls/gnutls.h>
51 #include <assert.h>
52
53 #include "utils.h"
54
55 /* A very basic TLS client, with extension
56 */
57
58 const char *side = "";
59
tls_log_func(int level,const char * str)60 static void tls_log_func(int level, const char *str)
61 {
62 fprintf(stderr, "%s|<%d>| %s", side, level, str);
63 }
64
65 #define TLSEXT_TYPE_SAMPLE 0xF1
66
67 static int TLSEXT_TYPE_client_sent = 0;
68 static int TLSEXT_TYPE_client_received = 0;
69 static int TLSEXT_TYPE_server_sent = 0;
70 static int TLSEXT_TYPE_server_received = 0;
71
72 static const unsigned char ext_data[] =
73 {
74 0xFE,
75 0xED
76 };
77
ext_recv_client_params(gnutls_session_t session,const unsigned char * buf,size_t buflen)78 static int ext_recv_client_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
79 {
80 if (buflen != sizeof(ext_data))
81 fail("ext_recv_client_params: Invalid input buffer length\n");
82
83 if (memcmp(buf, ext_data, sizeof(ext_data)) != 0)
84 fail("ext_recv_client_params: Invalid input buffer data\n");
85
86 TLSEXT_TYPE_client_received = 1;
87
88 gnutls_ext_set_data(session, TLSEXT_TYPE_SAMPLE, session);
89
90 return 0; //Success
91 }
92
ext_send_client_params(gnutls_session_t session,gnutls_buffer_t extdata)93 static int ext_send_client_params(gnutls_session_t session, gnutls_buffer_t extdata)
94 {
95 TLSEXT_TYPE_client_sent = 1;
96 gnutls_buffer_append_data(extdata, ext_data, sizeof(ext_data));
97 return sizeof(ext_data);
98 }
99
ext_recv_server_params(gnutls_session_t session,const unsigned char * buf,size_t buflen)100 static int ext_recv_server_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
101 {
102 if (buflen != sizeof(ext_data))
103 fail("ext_recv_server_params: Invalid input buffer length\n");
104
105 if (memcmp(buf, ext_data, sizeof(ext_data)) != 0)
106 fail("ext_recv_server_params: Invalid input buffer data\n");
107
108 TLSEXT_TYPE_server_received = 1;
109
110 return 0; //Success
111 }
112
ext_send_server_params(gnutls_session_t session,gnutls_buffer_t extdata)113 static int ext_send_server_params(gnutls_session_t session, gnutls_buffer_t extdata)
114 {
115 TLSEXT_TYPE_server_sent = 1;
116 gnutls_buffer_append_data(extdata, ext_data, sizeof(ext_data));
117 return sizeof(ext_data);
118 }
119
client(int sd,const char * prio)120 static void client(int sd, const char *prio)
121 {
122 int ret;
123 gnutls_session_t session;
124 gnutls_certificate_credentials_t clientx509cred;
125 void *p;
126
127 gnutls_global_set_log_function(tls_log_func);
128 if (debug)
129 gnutls_global_set_log_level(4711);
130
131 side = "client";
132
133 /* extensions are registered globally */
134 ret = gnutls_ext_register("ext_client", TLSEXT_TYPE_SAMPLE, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
135 assert(ret >= 0);
136
137 gnutls_certificate_allocate_credentials(&clientx509cred);
138
139 /* Initialize TLS session
140 */
141 gnutls_init(&session, GNUTLS_CLIENT);
142
143 assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
144
145 /* put the anonymous credentials to the current session
146 */
147 gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
148 clientx509cred);
149
150 gnutls_transport_set_int(session, sd);
151 gnutls_handshake_set_timeout(session, 20 * 1000);
152
153 /* Perform the TLS handshake
154 */
155 ret = gnutls_handshake(session);
156
157 if (ret < 0) {
158 fail("client: Handshake failed\n");
159 gnutls_perror(ret);
160 goto end;
161 } else {
162 if (debug)
163 success("client: Handshake was completed\n");
164 }
165
166 if (TLSEXT_TYPE_client_sent != 1 || TLSEXT_TYPE_client_received != 1)
167 fail("client: extension not properly sent/received\n");
168
169 ret = gnutls_ext_get_data(session, TLSEXT_TYPE_SAMPLE, &p);
170 if (ret < 0) {
171 fail("gnutls_ext_get_data: %s\n", gnutls_strerror(ret));
172 }
173
174 if (p != session) {
175 fail("client: gnutls_ext_get_data failed\n");
176 }
177
178 gnutls_bye(session, GNUTLS_SHUT_RDWR);
179
180 end:
181 close(sd);
182
183 gnutls_deinit(session);
184
185 gnutls_certificate_free_credentials(clientx509cred);
186 }
187
188 /* This is a sample TLS 1.0 server, for extension
189 */
190
191 static unsigned char server_cert_pem[] =
192 "-----BEGIN CERTIFICATE-----\n"
193 "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
194 "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
195 "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
196 "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
197 "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
198 "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
199 "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
200 "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
201 "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
202 "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
203 "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
204 "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
205 "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
206
207 const gnutls_datum_t server_cert = { server_cert_pem,
208 sizeof(server_cert_pem)
209 };
210
211 static unsigned char server_key_pem[] =
212 "-----BEGIN RSA PRIVATE KEY-----\n"
213 "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
214 "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
215 "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
216 "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
217 "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
218 "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
219 "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
220 "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
221 "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
222 "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
223 "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
224 "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
225 "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
226 "-----END RSA PRIVATE KEY-----\n";
227
228 const gnutls_datum_t server_key = { server_key_pem,
229 sizeof(server_key_pem)
230 };
231
232
server(int sd,const char * prio)233 static void server(int sd, const char *prio)
234 {
235 gnutls_certificate_credentials_t serverx509cred;
236 int ret;
237 gnutls_session_t session;
238
239 /* this must be called once in the program
240 */
241 gnutls_global_set_log_function(tls_log_func);
242 if (debug)
243 gnutls_global_set_log_level(4711);
244
245 side = "server";
246
247 gnutls_certificate_allocate_credentials(&serverx509cred);
248 gnutls_certificate_set_x509_key_mem(serverx509cred,
249 &server_cert, &server_key,
250 GNUTLS_X509_FMT_PEM);
251
252 gnutls_init(&session, GNUTLS_SERVER);
253
254 assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
255
256 gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
257 serverx509cred);
258
259 assert(gnutls_ext_register("ext_server", TLSEXT_TYPE_SAMPLE, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL)>=0);
260
261 gnutls_transport_set_int(session, sd);
262 gnutls_handshake_set_timeout(session, 20 * 1000);
263
264 ret = gnutls_handshake(session);
265 if (ret < 0) {
266 close(sd);
267 gnutls_deinit(session);
268 fail("server: Handshake has failed (%s)\n\n",
269 gnutls_strerror(ret));
270 return;
271 }
272 if (debug)
273 success("server: Handshake was completed\n");
274
275 if (TLSEXT_TYPE_server_sent != 1 || TLSEXT_TYPE_server_received != 1)
276 fail("server: extension not properly sent/received\n");
277
278 /* do not wait for the peer to close the connection.
279 */
280 gnutls_bye(session, GNUTLS_SHUT_WR);
281
282 close(sd);
283 gnutls_deinit(session);
284
285 gnutls_certificate_free_credentials(serverx509cred);
286
287 if (debug)
288 success("server: finished\n");
289 }
290
291 static
start(const char * prio)292 void start(const char *prio)
293 {
294 pid_t child1, child2;
295 int sockets[2];
296 int err;
297
298 success("trying %s\n", prio);
299
300 signal(SIGPIPE, SIG_IGN);
301 TLSEXT_TYPE_client_sent = 0;
302 TLSEXT_TYPE_client_received = 0;
303 TLSEXT_TYPE_server_sent = 0;
304 TLSEXT_TYPE_server_received = 0;
305
306 err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
307 if (err == -1) {
308 perror("socketpair");
309 fail("socketpair failed\n");
310 return;
311 }
312
313 child1 = fork();
314 if (child1 < 0) {
315 perror("fork");
316 fail("fork");
317 }
318
319 if (child1) {
320 int status;
321 /* parent */
322 close(sockets[1]);
323
324 child2 = fork();
325 if (child2 < 0) {
326 perror("fork");
327 fail("fork");
328 }
329
330 if (child2) {
331 waitpid(child1, &status, 0);
332 check_wait_status(status);
333
334 waitpid(child2, &status, 0);
335 check_wait_status(status);
336 } else {
337 server(sockets[0], prio);
338 exit(0);
339 }
340 } else {
341 close(sockets[0]);
342 client(sockets[1], prio);
343 exit(0);
344 }
345 }
346
doit(void)347 void doit(void)
348 {
349 int ret;
350 unsigned i;
351
352 start("NORMAL:-VERS-ALL:+VERS-TLS1.2");
353 start("NORMAL:-VERS-ALL:+VERS-TLS1.3");
354 start("NORMAL");
355
356 /* check whether we can crash the library by adding many extensions */
357 for (i=0;i<64;i++) {
358 ret = gnutls_ext_register("ext_serverxx", TLSEXT_TYPE_SAMPLE+i+1, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
359 if (ret < 0) {
360 success("failed registering extension no %d (expected)\n", i+1);
361 break;
362 }
363 }
364 }
365
366 #endif /* _WIN32 */
367