tests/custom-urls.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/abstract.h>
  48 #include <gnutls/urls.h>
  49 #include <signal.h>
  50
  51 #include "utils.h"
  52
  53 static void terminate(void);
  54
  55 /* This program tests the registration of custom URL strings.
  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 unsigned char server_cert_pem[] =
  64     "-----BEGIN CERTIFICATE-----\n"
  65     "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  66     "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
  67     "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
  68     "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
  69     "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
  70     "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
  71     "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
  72     "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
  73     "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
  74     "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
  75     "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
  76     "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
  77     "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
  78
  79 const gnutls_datum_t server_cert = { server_cert_pem,
  80         sizeof(server_cert_pem)
  81 };
  82
  83 static unsigned char server_key_pem[] =
  84     "-----BEGIN RSA PRIVATE KEY-----\n"
  85     "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
  86     "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
  87     "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
  88     "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
  89     "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
  90     "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
  91     "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
  92     "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
  93     "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
  94     "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
  95     "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
  96     "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
  97     "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
  98     "-----END RSA PRIVATE KEY-----\n";
  99
 100 const gnutls_datum_t server_key = { server_key_pem,
 101         sizeof(server_key_pem)
 102 };
 103
 104 static int url_import_key(gnutls_privkey_t pkey, const char *url, unsigned flags)
 105 {
 106         if (strcmp(url, "myurl:key") != 0) {
 107                 fail("unexpected key url: %s\n", url);
 108                 return GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE;
 109         }
 110         return gnutls_privkey_import_x509_raw(pkey, &server_key, GNUTLS_X509_FMT_PEM, NULL, 0);
 111 }
 112
 113 static int url_import_crt(gnutls_x509_crt_t crt, const char *url, unsigned flags)
 114 {
 115         if (strcmp(url, "myurl:cert") != 0) {
 116                 abort();
 117                 fail("unexpected cert url: %s\n", url);
 118                 return GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE;
 119         }
 120         return gnutls_x509_crt_import(crt, &server_cert, GNUTLS_X509_FMT_PEM);
 121 }
 122
 123 /* A very basic TLS client, with anonymous authentication.
 124  */
 125
 126 static void client(int fd)
 127 {
 128         int ret;
 129         gnutls_anon_client_credentials_t anoncred;
 130         gnutls_certificate_credentials_t x509_cred;
 131         gnutls_session_t session;
 132         /* Need to enable anonymous KX specifically. */
 133
 134         gnutls_anon_allocate_client_credentials(&anoncred);
 135         gnutls_certificate_allocate_credentials(&x509_cred);
 136
 137         /* Initialize TLS session
 138          */
 139         gnutls_init(&session, GNUTLS_CLIENT);
 140
 141         /* Use default priorities */
 142         gnutls_priority_set_direct(session, "NORMAL", NULL);
 143
 144         /* put the anonymous credentials to the current session
 145          */
 146         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 147         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 148
 149         gnutls_transport_set_int(session, fd);
 150
 151         /* Perform the TLS handshake
 152          */
 153         do {
 154                 ret = gnutls_handshake(session);
 155         }
 156         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 157
 158         if (ret < 0) {
 159                 fail("client: Handshake failed\n");
 160                 gnutls_perror(ret);
 161                 exit(1);
 162         } else {
 163                 if (debug)
 164                         success("client: Handshake was completed\n");
 165         }
 166
 167         if (debug)
 168                 success("client: TLS version is: %s\n",
 169                         gnutls_protocol_get_name
 170                         (gnutls_protocol_get_version(session)));
 171
 172         gnutls_bye(session, GNUTLS_SHUT_WR);
 173
 174         close(fd);
 175
 176         gnutls_deinit(session);
 177
 178         gnutls_anon_free_client_credentials(anoncred);
 179         gnutls_certificate_free_credentials(x509_cred);
 180
 181         gnutls_global_deinit();
 182 }
 183
 184 /* These are global */
 185 pid_t child;
 186
 187 static void terminate(void)
 188 {
 189         kill(child, SIGTERM);
 190         exit(1);
 191 }
 192
 193 static void server(int fd)
 194 {
 195         int ret;
 196         gnutls_session_t session;
 197         gnutls_anon_server_credentials_t anoncred;
 198         gnutls_certificate_credentials_t x509_cred;
 199
 200         /* this must be called once in the program
 201          */
 202         gnutls_certificate_allocate_credentials(&x509_cred);
 203         ret = gnutls_certificate_set_x509_key_file(x509_cred, "nomyurl:cert", "nomyurl:key",
 204                                                   GNUTLS_X509_FMT_PEM);
 205         if (ret != GNUTLS_E_FILE_ERROR) {
 206                 fail("server: gnutls_certificate_set_x509_key_file unexpected error (%s)\n\n",
 207                      gnutls_strerror(ret));
 208                 terminate();
 209         }
 210
 211         ret = gnutls_certificate_set_x509_key_file(x509_cred, "myurl:cert", "myurl:key",
 212                                                   GNUTLS_X509_FMT_PEM);
 213         if (ret < 0) {
 214                 fail("server: gnutls_certificate_set_x509_key_file (%s)\n\n",
 215                      gnutls_strerror(ret));
 216                 terminate();
 217         }
 218
 219         gnutls_anon_allocate_server_credentials(&anoncred);
 220
 221         gnutls_init(&session, GNUTLS_SERVER);
 222
 223         /* avoid calling all the priority functions, since the defaults
 224          * are adequate.
 225          */
 226         gnutls_priority_set_direct(session, "NORMAL", NULL);
 227
 228         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 229         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 230
 231         gnutls_transport_set_int(session, fd);
 232
 233         do {
 234                 ret = gnutls_handshake(session);
 235         }
 236         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 237         if (ret < 0) {
 238                 close(fd);
 239                 gnutls_deinit(session);
 240                 fail("server: Handshake has failed (%s)\n\n",
 241                      gnutls_strerror(ret));
 242                 terminate();
 243         }
 244         if (debug)
 245                 success("server: Handshake was completed\n");
 246
 247         if (debug)
 248                 success("server: TLS version is: %s\n",
 249                         gnutls_protocol_get_name
 250                         (gnutls_protocol_get_version(session)));
 251
 252         /* do not wait for the peer to close the connection.
 253          */
 254         gnutls_bye(session, GNUTLS_SHUT_WR);
 255
 256         close(fd);
 257         gnutls_deinit(session);
 258
 259         gnutls_anon_free_server_credentials(anoncred);
 260         gnutls_certificate_free_credentials(x509_cred);
 261
 262         gnutls_global_deinit();
 263
 264         if (debug)
 265                 success("server: finished\n");
 266 }
 267
 268 const gnutls_custom_url_st custom_url_st = {
 269         .name = "myurl:",
 270         .name_size = sizeof("myurl:")-1,
 271         .import_key = url_import_key,
 272         .import_crt = url_import_crt
 273 };
 274
 275 static void start(void)
 276 {
 277         int fd[2];
 278         int ret;
 279
 280         global_init();
 281
 282         if (debug) {
 283                 gnutls_global_set_log_function(server_log_func);
 284                 gnutls_global_set_log_level(3);
 285         }
 286
 287         ret = gnutls_register_custom_url(&custom_url_st);
 288         if (ret < 0) {
 289                 fail("error registering: %s\n", gnutls_strerror(ret));
 290                 exit(1);
 291         }
 292
 293         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 294         if (ret < 0) {
 295                 perror("socketpair");
 296                 exit(1);
 297         }
 298
 299         child = fork();
 300         if (child < 0) {
 301                 perror("fork");
 302                 fail("fork");
 303                 exit(1);
 304         }
 305
 306         if (child) {
 307                 /* parent */
 308                 close(fd[0]);
 309                 client(fd[1]);
 310                 kill(child, SIGTERM);
 311         } else {
 312                 close(fd[1]);
 313                 server(fd[0]);
 314                 exit(0);
 315         }
 316 }
 317
 318 static void ch_handler(int sig)
 319 {
 320         int status;
 321         wait(&status);
 322         if (WEXITSTATUS(status) != 0 ||
 323             (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
 324                 if (WIFSIGNALED(status))
 325                         fail("Child died with sigsegv\n");
 326                 else
 327                         fail("Child died with status %d\n",
 328                              WEXITSTATUS(status));
 329                 terminate();
 330         }
 331         return;
 332 }
 333
 334 void doit(void)
 335 {
 336         signal(SIGCHLD, ch_handler);
 337         signal(SIGPIPE, SIG_IGN);
 338
 339         start();
 340 }
 341
 342 #endif                          /* _WIN32 */