tests/mini-overhead.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 #define MTU 1500
 115
 116 static void client(int fd, const char *prio, unsigned overhead)
 117 {
 118         int ret;
 119         gnutls_anon_client_credentials_t anoncred;
 120         gnutls_certificate_credentials_t x509_cred;
 121         gnutls_session_t session;
 122         /* Need to enable anonymous KX specifically. */
 123
 124         global_init();
 125
 126         if (debug) {
 127                 gnutls_global_set_log_function(client_log_func);
 128                 gnutls_global_set_log_level(7);
 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 | GNUTLS_DATAGRAM);
 137
 138         /* Use default priorities */
 139         ret = gnutls_priority_set_direct(session, prio, NULL);
 140         if (ret < 0) {
 141                 fail("error in setting priority: %s\n", prio);
 142                 exit(1);
 143         }
 144
 145         /* put the anonymous credentials to the current session
 146          */
 147         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 148         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 149
 150         gnutls_transport_set_int(session, fd);
 151
 152         /* Perform the TLS handshake
 153          */
 154         do {
 155                 ret = gnutls_handshake(session);
 156         }
 157         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 158
 159         if (ret < 0) {
 160                 fail("client: Handshake failed for %s\n", prio);
 161                 gnutls_perror(ret);
 162                 exit(1);
 163         } else {
 164                 if (debug)
 165                         success("client: Handshake was completed\n");
 166         }
 167
 168         if (debug)
 169                 success("client: TLS version is: %s\n",
 170                         gnutls_protocol_get_name
 171                         (gnutls_protocol_get_version(session)));
 172
 173         gnutls_dtls_set_mtu(session, MTU);
 174         ret = gnutls_dtls_get_data_mtu(session);
 175
 176         if (MTU - ret != (int) overhead) {
 177                 fail("overhead for %s is %d, expected %u\n", prio,
 178                      MTU - ret, overhead);
 179                 exit(1);
 180         }
 181
 182         close(fd);
 183
 184         gnutls_deinit(session);
 185
 186         gnutls_anon_free_client_credentials(anoncred);
 187         gnutls_certificate_free_credentials(x509_cred);
 188
 189         gnutls_global_deinit();
 190 }
 191
 192
 193 /* These are global */
 194 gnutls_anon_server_credentials_t anoncred;
 195 gnutls_certificate_credentials_t x509_cred;
 196 pid_t child;
 197
 198 static gnutls_session_t initialize_tls_session(const char *prio)
 199 {
 200         gnutls_session_t session;
 201
 202         gnutls_init(&session, GNUTLS_SERVER | GNUTLS_DATAGRAM);
 203
 204         /* avoid calling all the priority functions, since the defaults
 205          * are adequate.
 206          */
 207         gnutls_priority_set_direct(session, prio, NULL);
 208
 209         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 210         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 211
 212         return session;
 213 }
 214
 215 static void terminate(void)
 216 {
 217         kill(child, SIGTERM);
 218         exit(1);
 219 }
 220
 221 static void server(int fd, const char *prio)
 222 {
 223         int ret;
 224         char buffer[MAX_BUF + 1];
 225         gnutls_session_t session;
 226
 227         /* this must be called once in the program
 228          */
 229         global_init();
 230         memset(buffer, 0, sizeof(buffer));
 231
 232         if (debug) {
 233                 gnutls_global_set_log_function(server_log_func);
 234                 gnutls_global_set_log_level(4711);
 235         }
 236
 237         gnutls_certificate_allocate_credentials(&x509_cred);
 238         gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
 239                                             &server_key,
 240                                             GNUTLS_X509_FMT_PEM);
 241
 242         gnutls_anon_allocate_server_credentials(&anoncred);
 243
 244         session = initialize_tls_session(prio);
 245
 246         gnutls_transport_set_int(session, fd);
 247
 248         do {
 249                 ret = gnutls_handshake(session);
 250         }
 251         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 252         if (ret < 0) {
 253                 close(fd);
 254                 gnutls_deinit(session);
 255                 fail("server: Handshake has failed (%s) for %s\n\n",
 256                      gnutls_strerror(ret), prio);
 257                 terminate();
 258         }
 259         if (debug)
 260                 success("server: Handshake was completed\n");
 261
 262         if (debug)
 263                 success("server: TLS version is: %s\n",
 264                         gnutls_protocol_get_name
 265                         (gnutls_protocol_get_version(session)));
 266         close(fd);
 267         gnutls_deinit(session);
 268
 269         gnutls_anon_free_server_credentials(anoncred);
 270         gnutls_certificate_free_credentials(x509_cred);
 271
 272         gnutls_global_deinit();
 273
 274         if (debug)
 275                 success("server: finished\n");
 276 }
 277
 278 static void start(const char *prio, unsigned overhead)
 279 {
 280         int fd[2];
 281         int ret;
 282
 283         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 284         if (ret < 0) {
 285                 perror("socketpair");
 286                 exit(1);
 287         }
 288
 289         child = fork();
 290         if (child < 0) {
 291                 perror("fork");
 292                 fail("fork");
 293                 exit(1);
 294         }
 295
 296         if (child) {
 297                 /* parent */
 298                 close(fd[1]);
 299                 server(fd[0], prio);
 300                 waitpid(-1, NULL, 0);
 301                 //kill(child, SIGTERM);
 302         } else {
 303                 close(fd[0]);
 304                 client(fd[1], prio, overhead);
 305                 exit(0);
 306         }
 307 }
 308
 309 static void ch_handler(int sig)
 310 {
 311         int status = 0;
 312
 313         waitpid(-1, &status, 0);
 314         if (WEXITSTATUS(status) != 0 ||
 315             (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
 316                 if (WIFSIGNALED(status))
 317                         fail("Child died with sigsegv\n");
 318                 else
 319                         fail("Child died with status %d\n",
 320                              WEXITSTATUS(status));
 321                 terminate();
 322         }
 323         return;
 324 }
 325
 326 void doit(void)
 327 {
 328         signal(SIGCHLD, ch_handler);
 329
 330         /* 13 + 20(sha1) + 16(iv) + 16(max pad) */
 331         start
 332             ("NONE:+VERS-DTLS1.0:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-NULL:+RSA",
 333              65);
 334         /* 13 + 16(tag) + 4(iv) */
 335         start
 336             ("NONE:+VERS-DTLS1.2:+AES-128-GCM:+AEAD:+SIGN-ALL:+COMP-NULL:+RSA",
 337              37);
 338 #ifndef ENABLE_FIPS140
 339         /* 13 + 20(tag) */
 340         start
 341             ("NONE:+VERS-DTLS1.0:+SALSA20-256:+SHA1:+SIGN-ALL:+COMP-NULL:+RSA",
 342              33);
 343 #endif
 344 }
 345
 346 #endif                          /* _WIN32 */