tests/mini-rehandshake-2.c

   1 /*
   2  * Copyright (C) 2014 Nikos Mavrogiannopoulos
   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 /* A very basic TLS client, with anonymous authentication.
 110  */
 111
 112 #define MAX_BUF 1024
 113
 114 static void client(int fd, unsigned test)
 115 {
 116         int ret;
 117         char buffer[MAX_BUF + 1];
 118         gnutls_anon_client_credentials_t anoncred;
 119         gnutls_certificate_credentials_t x509_cred;
 120         gnutls_session_t session;
 121         /* Need to enable anonymous KX specifically. */
 122
 123         global_init();
 124         memset(buffer, 2, sizeof(buffer));
 125
 126         if (debug) {
 127                 gnutls_global_set_log_function(client_log_func);
 128                 gnutls_global_set_log_level(3);
 129         }
 130
 131         gnutls_anon_allocate_client_credentials(&anoncred);
 132         gnutls_certificate_allocate_credentials(&x509_cred);
 133
 134         /* Initialize TLS session
 135          */
 136         gnutls_init(&session, GNUTLS_CLIENT);
 137
 138         /* Use default priorities */
 139         gnutls_priority_set_direct(session, "NORMAL", NULL);
 140
 141         /* put the anonymous credentials to the current session
 142          */
 143         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 144         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 145
 146         gnutls_transport_set_int(session, fd);
 147
 148         /* Perform the TLS handshake
 149          */
 150         do {
 151                 ret = gnutls_handshake(session);
 152         }
 153         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 154
 155         if (ret < 0) {
 156                 fail("client: Handshake failed\n");
 157                 gnutls_perror(ret);
 158                 exit(1);
 159         } else {
 160                 if (debug)
 161                         success("client: Handshake was completed\n");
 162         }
 163
 164         if (debug)
 165                 success("client: TLS version is: %s\n",
 166                         gnutls_protocol_get_name
 167                         (gnutls_protocol_get_version(session)));
 168
 169         if (debug)
 170                 success("client: test %d\n", test);
 171
 172         if (test != 0) {
 173                 ret = gnutls_handshake(session);
 174                 if (ret != GNUTLS_E_GOT_APPLICATION_DATA) {
 175                         fail("client: error in code after rehandshake: %s\n",
 176                              gnutls_strerror(ret));
 177                         exit(1);
 178                 }
 179
 180                 do {
 181                         do {
 182                                 ret =
 183                                     gnutls_record_recv(session, buffer,
 184                                                        MAX_BUF);
 185                         } while (ret == GNUTLS_E_AGAIN
 186                                  || ret == GNUTLS_E_INTERRUPTED);
 187                 } while (ret > 0);
 188
 189                 if (ret < GNUTLS_E_REHANDSHAKE) {
 190                         fail("client: Error receiving: %s\n",
 191                              gnutls_strerror(ret));
 192                         exit(1);
 193                 }
 194
 195         } else {
 196                 do {
 197                         do {
 198                                 ret =
 199                                     gnutls_record_recv(session, buffer,
 200                                                        MAX_BUF);
 201                         } while (ret == GNUTLS_E_AGAIN
 202                                  || ret == GNUTLS_E_INTERRUPTED);
 203                 } while (ret > 0);
 204
 205                 if (ret != GNUTLS_E_REHANDSHAKE) {
 206                         fail("client: Error receiving rehandshake: %s\n",
 207                              gnutls_strerror(ret));
 208                         exit(1);
 209                 }
 210
 211                 do {
 212                         ret =
 213                             gnutls_record_send(session, buffer, sizeof(buffer));
 214                 } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 215
 216                 if (ret < 0) {
 217                         fail("Error sending %d byte packet: %s\n",
 218                              (int)sizeof(buffer), gnutls_strerror(ret));
 219                         exit(1);
 220                 }
 221
 222                 do {
 223                         ret =
 224                             gnutls_record_send(session, buffer, sizeof(buffer));
 225                 } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 226
 227                 if (ret < 0) {
 228                         fail("Error sending %d byte packet: %s\n",
 229                              (int)sizeof(buffer), gnutls_strerror(ret));
 230                         exit(1);
 231                 }
 232
 233         }
 234
 235         gnutls_bye(session, GNUTLS_SHUT_WR);
 236
 237         close(fd);
 238
 239         gnutls_deinit(session);
 240
 241         gnutls_anon_free_client_credentials(anoncred);
 242         gnutls_certificate_free_credentials(x509_cred);
 243
 244         gnutls_global_deinit();
 245 }
 246
 247 /* These are global */
 248 pid_t child;
 249
 250 static void terminate(void)
 251 {
 252         kill(child, SIGTERM);
 253         exit(1);
 254 }
 255
 256 static void server(int fd, unsigned test)
 257 {
 258         int ret;
 259         char buffer[MAX_BUF + 1];
 260         gnutls_session_t session;
 261         gnutls_anon_server_credentials_t anoncred;
 262         gnutls_certificate_credentials_t x509_cred;
 263
 264         /* this must be called once in the program
 265          */
 266         global_init();
 267         memset(buffer, 0, sizeof(buffer));
 268
 269         if (debug) {
 270                 gnutls_global_set_log_function(server_log_func);
 271                 gnutls_global_set_log_level(3);
 272         }
 273
 274         gnutls_certificate_allocate_credentials(&x509_cred);
 275         gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
 276                                             &server_key, GNUTLS_X509_FMT_PEM);
 277
 278         gnutls_anon_allocate_server_credentials(&anoncred);
 279
 280         gnutls_init(&session, GNUTLS_SERVER);
 281
 282         /* avoid calling all the priority functions, since the defaults
 283          * are adequate.
 284          */
 285         gnutls_priority_set_direct(session, "NORMAL", NULL);
 286
 287         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 288         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 289
 290         gnutls_transport_set_int(session, fd);
 291
 292         do {
 293                 ret = gnutls_handshake(session);
 294         }
 295         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 296         if (ret < 0) {
 297                 close(fd);
 298                 gnutls_deinit(session);
 299                 fail("server: Handshake has failed (%s)\n\n",
 300                      gnutls_strerror(ret));
 301                 terminate();
 302         }
 303         if (debug)
 304                 success("server: Handshake was completed\n");
 305
 306         if (debug)
 307                 success("server: TLS version is: %s\n",
 308                         gnutls_protocol_get_name
 309                         (gnutls_protocol_get_version(session)));
 310
 311         if (debug)
 312                 success("server: test %d\n", test);
 313
 314         if (test != 0) {
 315
 316                 do {
 317                         do {
 318                                 ret =
 319                                     gnutls_record_recv(session, buffer,
 320                                                        MAX_BUF);
 321                         } while (ret == GNUTLS_E_AGAIN
 322                                  || ret == GNUTLS_E_INTERRUPTED);
 323                 } while (ret > 0);
 324
 325                 if (ret != GNUTLS_E_REHANDSHAKE) {
 326                         fail("server: Error receiving client handshake request: %s\n", gnutls_strerror(ret));
 327                         terminate();
 328                 }
 329
 330                 do {
 331                         ret =
 332                             gnutls_record_send(session, buffer, sizeof(buffer));
 333                 } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 334
 335                 if (ret < 0) {
 336                         fail("Error sending %d byte packet: %s\n",
 337                              (int)sizeof(buffer), gnutls_strerror(ret));
 338                         terminate();
 339                 }
 340
 341         } else {
 342                 if (debug)
 343                         success("server: sending rehandshake request\n");
 344
 345                 ret = gnutls_rehandshake(session);
 346                 if (ret < 0) {
 347                         fail("Error sending %d byte packet: %s\n",
 348                              (int)sizeof(buffer), gnutls_strerror(ret));
 349                         terminate();
 350                 }
 351
 352                 if (debug)
 353                         success("server: starting handshake\n");
 354
 355                 ret = gnutls_handshake(session);
 356
 357                 if (ret != GNUTLS_E_GOT_APPLICATION_DATA) {
 358                         fail("server: didn't receive GNUTLS_E_GOT_APPLICATION_DATA: %s\n", gnutls_strerror(ret));
 359                         terminate();
 360                 }
 361
 362                 if (debug)
 363                         success("server: got application data error code: %s\n",
 364                                 gnutls_strerror(ret));
 365
 366                 do {
 367                         do {
 368                                 ret =
 369                                     gnutls_record_recv(session, buffer,
 370                                                        MAX_BUF);
 371                         } while (ret == GNUTLS_E_AGAIN
 372                                  || ret == GNUTLS_E_INTERRUPTED);
 373                 } while (ret > 0);
 374
 375                 if (debug)
 376                         success("server: final ret: %s\n",
 377                                 gnutls_strerror(ret));
 378
 379                 if (ret < 0) {
 380                         fail("Error receiving final packet: %s\n",
 381                              gnutls_strerror(ret));
 382                         terminate();
 383                 }
 384
 385         }
 386
 387         /* do not wait for the peer to close the connection.
 388          */
 389         gnutls_bye(session, GNUTLS_SHUT_WR);
 390
 391         close(fd);
 392         gnutls_deinit(session);
 393
 394         gnutls_anon_free_server_credentials(anoncred);
 395         gnutls_certificate_free_credentials(x509_cred);
 396
 397         gnutls_global_deinit();
 398
 399         if (debug)
 400                 success("server: finished\n");
 401 }
 402
 403 static void start(unsigned test)
 404 {
 405         int fd[2];
 406         int ret;
 407
 408         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 409         if (ret < 0) {
 410                 perror("socketpair");
 411                 exit(1);
 412         }
 413
 414         child = fork();
 415         if (child < 0) {
 416                 perror("fork");
 417                 fail("fork");
 418                 exit(1);
 419         }
 420
 421         if (child) {
 422                 /* parent */
 423                 close(fd[1]);
 424                 server(fd[0], test);
 425                 kill(child, SIGTERM);
 426         } else {
 427                 close(fd[0]);
 428                 client(fd[1], test);
 429                 exit(0);
 430         }
 431 }
 432
 433 static void ch_handler(int sig)
 434 {
 435         int status;
 436         wait(&status);
 437         if (WEXITSTATUS(status) != 0 ||
 438             (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
 439                 if (WIFSIGNALED(status))
 440                         fail("Child died with sigsegv\n");
 441                 else
 442                         fail("Child died with status %d\n",
 443                              WEXITSTATUS(status));
 444                 terminate();
 445         }
 446         return;
 447 }
 448
 449 void doit(void)
 450 {
 451         signal(SIGCHLD, ch_handler);
 452         signal(SIGPIPE, SIG_IGN);
 453
 454         start(0);
 455 }
 456
 457 #endif                          /* _WIN32 */