tests/mini-record.c

   1 /*
   2  * Copyright (C) 2012 Free Software Foundation, 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 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 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29
  30 #if defined(_WIN32)
  31
  32 int main()
  33 {
  34         exit(77);
  35 }
  36
  37 #else
  38
  39 #include <string.h>
  40 #include <sys/types.h>
  41 #include <netinet/in.h>
  42 #include <sys/socket.h>
  43 #include <sys/wait.h>
  44 #include <arpa/inet.h>
  45 #include <unistd.h>
  46 #include <gnutls/gnutls.h>
  47 #include <gnutls/dtls.h>
  48 #include <signal.h>
  49
  50 #include "utils.h"
  51
  52 static void terminate(void);
  53
  54 /* This program tests the robustness of record
  55  * decoding.
  56  */
  57
  58 static void server_log_func(int level, const char *str)
  59 {
  60         fprintf(stderr, "server|<%d>| %s", level, str);
  61 }
  62
  63 static void client_log_func(int level, const char *str)
  64 {
  65         fprintf(stderr, "client|<%d>| %s", level, str);
  66 }
  67
  68 static unsigned char server_cert_pem[] =
  69     "-----BEGIN CERTIFICATE-----\n"
  70     "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  71     "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
  72     "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
  73     "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
  74     "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
  75     "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
  76     "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
  77     "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
  78     "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
  79     "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
  80     "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
  81     "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
  82     "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
  83
  84 const gnutls_datum_t server_cert = { server_cert_pem,
  85         sizeof(server_cert_pem)
  86 };
  87
  88 static unsigned char server_key_pem[] =
  89     "-----BEGIN RSA PRIVATE KEY-----\n"
  90     "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
  91     "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
  92     "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
  93     "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
  94     "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
  95     "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
  96     "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
  97     "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
  98     "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
  99     "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 100     "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 101     "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 102     "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 103     "-----END RSA PRIVATE KEY-----\n";
 104
 105 const gnutls_datum_t server_key = { server_key_pem,
 106         sizeof(server_key_pem)
 107 };
 108
 109
 110 /* A very basic TLS client, with anonymous authentication.
 111  */
 112
 113 #define MAX_BUF 1024
 114
 115 static int to_send = -1;
 116 static int mtu = 0;
 117
 118 static ssize_t
 119 push(gnutls_transport_ptr_t tr, const void *data, size_t len)
 120 {
 121         int fd = (long int) tr;
 122
 123         return send(fd, data, len, 0);
 124 }
 125
 126 #define RECORD_HEADER_SIZE (5+8)
 127
 128 static ssize_t
 129 push_crippled(gnutls_transport_ptr_t tr, const void *data, size_t len)
 130 {
 131         int fd = (long int) tr;
 132         int _len, ret;
 133         uint8_t *_data = (void *) data;
 134
 135         if (to_send == -1)
 136                 return send(fd, data, len, 0);
 137         else {
 138 #if 0
 139                 _len =
 140                     ((uint8_t *) data)[11] << 8 | ((uint8_t *) data)[12];
 141                 fprintf(stderr, "mtu: %d, len: %d", mtu, (int) _len);
 142                 fprintf(stderr, " send: %d\n", (int) to_send);
 143 #endif
 144
 145                 _len = to_send;
 146                 _data[11] = _len >> 8;
 147                 _data[12] = _len;
 148
 149                 /* correct len */
 150                 ret = send(fd, data, RECORD_HEADER_SIZE + _len, 0);
 151
 152                 if (ret < 0)
 153                         return ret;
 154
 155                 return len;
 156         }
 157 }
 158
 159 static void client(int fd, const char *prio)
 160 {
 161         int ret;
 162         char buffer[MAX_BUF + 1];
 163         gnutls_anon_client_credentials_t anoncred;
 164         gnutls_certificate_credentials_t x509_cred;
 165         gnutls_session_t session;
 166         /* Need to enable anonymous KX specifically. */
 167
 168         global_init();
 169
 170         if (debug) {
 171                 gnutls_global_set_log_function(client_log_func);
 172                 gnutls_global_set_log_level(7);
 173         }
 174
 175         gnutls_anon_allocate_client_credentials(&anoncred);
 176         gnutls_certificate_allocate_credentials(&x509_cred);
 177
 178         /* Initialize TLS session
 179          */
 180         gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_DATAGRAM);
 181         gnutls_dtls_set_mtu(session, 1500);
 182
 183         /* Use default priorities */
 184         gnutls_priority_set_direct(session, prio, NULL);
 185
 186         /* put the anonymous credentials to the current session
 187          */
 188         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 189         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 190
 191         gnutls_transport_set_int(session, fd);
 192         gnutls_transport_set_push_function(session, push);
 193
 194         /* Perform the TLS handshake
 195          */
 196         do {
 197                 ret = gnutls_handshake(session);
 198         }
 199         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 200
 201         if (ret < 0) {
 202                 fail("client: Handshake failed\n");
 203                 gnutls_perror(ret);
 204                 exit(1);
 205         } else {
 206                 if (debug)
 207                         success("client: Handshake was completed\n");
 208         }
 209
 210         if (debug)
 211                 success("client: TLS version is: %s\n",
 212                         gnutls_protocol_get_name
 213                         (gnutls_protocol_get_version(session)));
 214
 215         do {
 216                 do {
 217                         ret = gnutls_record_recv(session, buffer, MAX_BUF);
 218                 } while (ret == GNUTLS_E_AGAIN
 219                          || ret == GNUTLS_E_INTERRUPTED);
 220         } while (ret > 0);
 221
 222         if (ret == 0) {
 223                 if (debug)
 224                         success
 225                             ("client: Peer has closed the TLS connection\n");
 226                 goto end;
 227         } else if (ret < 0) {
 228                 if (ret != 0) {
 229                         fail("client: Error: %s\n", gnutls_strerror(ret));
 230                         exit(1);
 231                 }
 232         }
 233
 234         gnutls_bye(session, GNUTLS_SHUT_WR);
 235
 236       end:
 237
 238         close(fd);
 239
 240         gnutls_deinit(session);
 241
 242         gnutls_anon_free_client_credentials(anoncred);
 243         gnutls_certificate_free_credentials(x509_cred);
 244
 245         gnutls_global_deinit();
 246 }
 247
 248
 249 /* These are global */
 250 pid_t child;
 251
 252 static void terminate(void)
 253 {
 254         kill(child, SIGTERM);
 255         exit(1);
 256 }
 257
 258 static void server(int fd, const char *prio)
 259 {
 260         int ret;
 261         char buffer[MAX_BUF + 1];
 262         gnutls_session_t session;
 263         gnutls_anon_server_credentials_t anoncred;
 264         gnutls_certificate_credentials_t x509_cred;
 265
 266         /* this must be called once in the program
 267          */
 268         global_init();
 269         memset(buffer, 0, sizeof(buffer));
 270
 271         if (debug) {
 272                 gnutls_global_set_log_function(server_log_func);
 273                 gnutls_global_set_log_level(4711);
 274         }
 275
 276         gnutls_certificate_allocate_credentials(&x509_cred);
 277         gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
 278                                             &server_key,
 279                                             GNUTLS_X509_FMT_PEM);
 280
 281         gnutls_anon_allocate_server_credentials(&anoncred);
 282
 283         gnutls_init(&session, GNUTLS_SERVER | GNUTLS_DATAGRAM);
 284         gnutls_dtls_set_mtu(session, 1500);
 285
 286         /* avoid calling all the priority functions, since the defaults
 287          * are adequate.
 288          */
 289         gnutls_priority_set_direct(session, prio, NULL);
 290
 291         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 292         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 293
 294         gnutls_transport_set_int(session, fd);
 295         gnutls_transport_set_push_function(session, push_crippled);
 296
 297         do {
 298                 ret = gnutls_handshake(session);
 299         }
 300         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 301         if (ret < 0) {
 302                 close(fd);
 303                 gnutls_deinit(session);
 304                 fail("server: Handshake has failed (%s)\n\n",
 305                      gnutls_strerror(ret));
 306                 terminate();
 307         }
 308         if (debug)
 309                 success("server: Handshake was completed\n");
 310
 311         if (debug)
 312                 success("server: TLS version is: %s\n",
 313                         gnutls_protocol_get_name
 314                         (gnutls_protocol_get_version(session)));
 315         mtu = gnutls_dtls_get_mtu(session);
 316
 317         do {
 318                 do {
 319                         ret =
 320                             gnutls_record_send(session, buffer,
 321                                                sizeof(buffer));
 322                 } while (ret == GNUTLS_E_AGAIN
 323                          || ret == GNUTLS_E_INTERRUPTED);
 324
 325                 if (ret < 0) {
 326                         fail("Error sending %d byte packet: %s\n", to_send,
 327                              gnutls_strerror(ret));
 328                         terminate();
 329                 }
 330                 to_send++;
 331         }
 332         while (to_send < 64);
 333
 334         to_send = -1;
 335         /* do not wait for the peer to close the connection.
 336          */
 337         gnutls_bye(session, GNUTLS_SHUT_WR);
 338
 339         close(fd);
 340         gnutls_deinit(session);
 341
 342         gnutls_anon_free_server_credentials(anoncred);
 343         gnutls_certificate_free_credentials(x509_cred);
 344
 345         gnutls_global_deinit();
 346
 347         if (debug)
 348                 success("server: finished\n");
 349 }
 350
 351 static void start(const char *prio)
 352 {
 353         int fd[2];
 354         int ret;
 355
 356         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 357         if (ret < 0) {
 358                 perror("socketpair");
 359                 exit(1);
 360         }
 361
 362         child = fork();
 363         if (child < 0) {
 364                 perror("fork");
 365                 fail("fork");
 366                 exit(1);
 367         }
 368
 369         if (child) {
 370                 /* parent */
 371                 close(fd[1]);
 372                 server(fd[0], prio);
 373                 kill(child, SIGTERM);
 374         } else {
 375                 close(fd[0]);
 376                 client(fd[1], prio);
 377                 exit(0);
 378         }
 379 }
 380
 381 #define AES_CBC "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 382 #define AES_CBC_SHA256 "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+RSA:+AES-128-CBC:+AES-256-CBC:+SHA256:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 383 #define AES_GCM "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+RSA:+AES-128-GCM:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 384
 385 static void ch_handler(int sig)
 386 {
 387         int status;
 388         wait(&status);
 389         if (WEXITSTATUS(status) != 0 ||
 390             (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
 391                 if (WIFSIGNALED(status))
 392                         fail("Child died with sigsegv\n");
 393                 else
 394                         fail("Child died with status %d\n",
 395                              WEXITSTATUS(status));
 396                 terminate();
 397         }
 398         return;
 399 }
 400
 401 void doit(void)
 402 {
 403         signal(SIGCHLD, ch_handler);
 404
 405         start(AES_CBC);
 406         start(AES_CBC_SHA256);
 407         start(AES_GCM);
 408 }
 409
 410 #endif                          /* _WIN32 */