_ Git - BearSSL/blob - tools/client.c

   1 /*
   2  * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdint.h>
  29 #include <errno.h>
  30
  31 #include <sys/types.h>
  32 #include <sys/socket.h>
  33 #include <netdb.h>
  34 #include <netinet/in.h>
  35 #include <arpa/inet.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38
  39 #include "brssl.h"
  40 #include "bearssl.h"
  41
  42 static int
  43 host_connect(const char *host, const char *port, int verbose)
  44 {
  45         struct addrinfo hints, *si, *p;
  46         int fd;
  47         int err;
  48
  49         memset(&hints, 0, sizeof hints);
  50         hints.ai_family = PF_UNSPEC;
  51         hints.ai_socktype = SOCK_STREAM;
  52         err = getaddrinfo(host, port, &hints, &si);
  53         if (err != 0) {
  54                 fprintf(stderr, "ERROR: getaddrinfo(): %s\n",
  55                         gai_strerror(err));
  56                 return -1;
  57         }
  58         fd = -1;
  59         for (p = si; p != NULL; p = p->ai_next) {
  60                 if (verbose) {
  61                         struct sockaddr *sa;
  62                         void *addr;
  63                         char tmp[INET6_ADDRSTRLEN + 50];
  64
  65                         sa = (struct sockaddr *)p->ai_addr;
  66                         if (sa->sa_family == AF_INET) {
  67                                 addr = &((struct sockaddr_in *)sa)->sin_addr;
  68                         } else if (sa->sa_family == AF_INET6) {
  69                                 addr = &((struct sockaddr_in6 *)sa)->sin6_addr;
  70                         } else {
  71                                 addr = NULL;
  72                         }
  73                         if (addr != NULL) {
  74                                 if (!inet_ntop(p->ai_family, addr,
  75                                         tmp, sizeof tmp))
  76                                 {
  77                                         strcpy(tmp, "<invalid>");
  78                                 }
  79                         } else {
  80                                 sprintf(tmp, "<unknown family: %d>",
  81                                         (int)sa->sa_family);
  82                         }
  83                         fprintf(stderr, "connecting to: %s\n", tmp);
  84                 }
  85                 fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
  86                 if (fd < 0) {
  87                         if (verbose) {
  88                                 perror("socket()");
  89                         }
  90                         continue;
  91                 }
  92                 if (connect(fd, p->ai_addr, p->ai_addrlen) < 0) {
  93                         if (verbose) {
  94                                 perror("connect()");
  95                         }
  96                         close(fd);
  97                         continue;
  98                 }
  99                 break;
 100         }
 101         if (p == NULL) {
 102                 freeaddrinfo(si);
 103                 fprintf(stderr, "ERROR: failed to connect\n");
 104                 return -1;
 105         }
 106         freeaddrinfo(si);
 107         if (verbose) {
 108                 fprintf(stderr, "connected.\n");
 109         }
 110
 111         /*
 112          * We make the socket non-blocking, since we are going to use
 113          * poll() to organise I/O.
 114          */
 115         fcntl(fd, F_SETFL, O_NONBLOCK);
 116         return fd;
 117 }
 118
 119 static void
 120 usage_client(void)
 121 {
 122         fprintf(stderr,
 123 "usage: brssl client server[:port] [ options ]\n");
 124         fprintf(stderr,
 125 "options:\n");
 126         fprintf(stderr,
 127 "   -q              suppress verbose messages\n");
 128         fprintf(stderr,
 129 "   -trace          activate extra debug messages (dump of all packets)\n");
 130         fprintf(stderr,
 131 "   -sni name       use this specific name for SNI\n");
 132         fprintf(stderr,
 133 "   -nosni          do not send any SNI\n");
 134         fprintf(stderr,
 135 "   -mono           use monodirectional buffering\n");
 136         fprintf(stderr,
 137 "   -buf length     set the I/O buffer length (in bytes)\n");
 138         fprintf(stderr,
 139 "   -CA file        add certificates in 'file' to trust anchors\n");
 140         fprintf(stderr,
 141 "   -list           list supported names (protocols, algorithms...)\n");
 142         fprintf(stderr,
 143 "   -vmin name      set minimum supported version (default: TLS-1.0)\n");
 144         fprintf(stderr,
 145 "   -vmax name      set maximum supported version (default: TLS-1.2)\n");
 146         fprintf(stderr,
 147 "   -cs names       set list of supported cipher suites (comma-separated)\n");
 148         fprintf(stderr,
 149 "   -hf names       add support for some hash functions (comma-separated)\n");
 150         fprintf(stderr,
 151 "   -minhello len   set minimum ClientHello length (in bytes)\n");
 152 }
 153
 154 /* see brssl.h */
 155 int
 156 do_client(int argc, char *argv[])
 157 {
 158         int retcode;
 159         int verbose;
 160         int trace;
 161         int i, bidi;
 162         const char *server_name;
 163         char *host;
 164         char *port;
 165         const char *sni;
 166         anchor_list anchors = VEC_INIT;
 167         unsigned vmin, vmax;
 168         cipher_suite *suites;
 169         size_t num_suites;
 170         uint16_t *suite_ids;
 171         unsigned hfuns;
 172         size_t u;
 173         br_ssl_client_context cc;
 174         br_x509_minimal_context xc;
 175         x509_noanchor_context xwc;
 176         const br_hash_class *dnhash;
 177         unsigned char *iobuf;
 178         size_t iobuf_len;
 179         size_t minhello_len;
 180         int fd;
 181
 182         retcode = 0;
 183         verbose = 1;
 184         trace = 0;
 185         server_name = NULL;
 186         host = NULL;
 187         port = NULL;
 188         sni = NULL;
 189         bidi = 1;
 190         vmin = 0;
 191         vmax = 0;
 192         suites = NULL;
 193         num_suites = 0;
 194         hfuns = 0;
 195         suite_ids = NULL;
 196         iobuf = NULL;
 197         iobuf_len = 0;
 198         minhello_len = (size_t)-1;
 199         fd = -1;
 200         for (i = 0; i < argc; i ++) {
 201                 const char *arg;
 202
 203                 arg = argv[i];
 204                 if (arg[0] != '-') {
 205                         if (server_name != NULL) {
 206                                 fprintf(stderr,
 207                                         "ERROR: duplicate server name\n");
 208                                 usage_client();
 209                                 goto client_exit_error;
 210                         }
 211                         server_name = arg;
 212                         continue;
 213                 }
 214                 if (eqstr(arg, "-v") || eqstr(arg, "-verbose")) {
 215                         verbose = 1;
 216                 } else if (eqstr(arg, "-q") || eqstr(arg, "-quiet")) {
 217                         verbose = 0;
 218                 } else if (eqstr(arg, "-trace")) {
 219                         trace = 1;
 220                 } else if (eqstr(arg, "-sni")) {
 221                         if (++ i >= argc) {
 222                                 fprintf(stderr,
 223                                         "ERROR: no argument for '-sni'\n");
 224                                 usage_client();
 225                                 goto client_exit_error;
 226                         }
 227                         if (sni != NULL) {
 228                                 fprintf(stderr, "ERROR: duplicate SNI\n");
 229                                 usage_client();
 230                                 goto client_exit_error;
 231                         }
 232                         sni = argv[i];
 233                 } else if (eqstr(arg, "-nosni")) {
 234                         if (sni != NULL) {
 235                                 fprintf(stderr, "ERROR: duplicate SNI\n");
 236                                 usage_client();
 237                                 goto client_exit_error;
 238                         }
 239                         sni = "";
 240                 } else if (eqstr(arg, "-mono")) {
 241                         bidi = 0;
 242                 } else if (eqstr(arg, "-buf")) {
 243                         if (++ i >= argc) {
 244                                 fprintf(stderr,
 245                                         "ERROR: no argument for '-buf'\n");
 246                                 usage_client();
 247                                 goto client_exit_error;
 248                         }
 249                         arg = argv[i];
 250                         if (iobuf_len != 0) {
 251                                 fprintf(stderr,
 252                                         "ERROR: duplicate I/O buffer length\n");
 253                                 usage_client();
 254                                 goto client_exit_error;
 255                         }
 256                         iobuf_len = parse_size(arg);
 257                         if (iobuf_len == (size_t)-1) {
 258                                 usage_client();
 259                                 goto client_exit_error;
 260                         }
 261                 } else if (eqstr(arg, "-CA")) {
 262                         if (++ i >= argc) {
 263                                 fprintf(stderr,
 264                                         "ERROR: no argument for '-CA'\n");
 265                                 usage_client();
 266                                 goto client_exit_error;
 267                         }
 268                         arg = argv[i];
 269                         if (read_trust_anchors(&anchors, arg) == 0) {
 270                                 usage_client();
 271                                 goto client_exit_error;
 272                         }
 273                 } else if (eqstr(arg, "-list")) {
 274                         list_names();
 275                         goto client_exit;
 276                 } else if (eqstr(arg, "-vmin")) {
 277                         if (++ i >= argc) {
 278                                 fprintf(stderr,
 279                                         "ERROR: no argument for '-vmin'\n");
 280                                 usage_client();
 281                                 goto client_exit_error;
 282                         }
 283                         arg = argv[i];
 284                         if (vmin != 0) {
 285                                 fprintf(stderr,
 286                                         "ERROR: duplicate minimum version\n");
 287                                 usage_client();
 288                                 goto client_exit_error;
 289                         }
 290                         vmin = parse_version(arg, strlen(arg));
 291                         if (vmin == 0) {
 292                                 fprintf(stderr,
 293                                         "ERROR: unrecognised version '%s'\n",
 294                                         arg);
 295                                 usage_client();
 296                                 goto client_exit_error;
 297                         }
 298                 } else if (eqstr(arg, "-vmax")) {
 299                         if (++ i >= argc) {
 300                                 fprintf(stderr,
 301                                         "ERROR: no argument for '-vmax'\n");
 302                                 usage_client();
 303                                 goto client_exit_error;
 304                         }
 305                         arg = argv[i];
 306                         if (vmax != 0) {
 307                                 fprintf(stderr,
 308                                         "ERROR: duplicate maximum version\n");
 309                                 usage_client();
 310                                 goto client_exit_error;
 311                         }
 312                         vmax = parse_version(arg, strlen(arg));
 313                         if (vmax == 0) {
 314                                 fprintf(stderr,
 315                                         "ERROR: unrecognised version '%s'\n",
 316                                         arg);
 317                                 usage_client();
 318                                 goto client_exit_error;
 319                         }
 320                 } else if (eqstr(arg, "-cs")) {
 321                         if (++ i >= argc) {
 322                                 fprintf(stderr,
 323                                         "ERROR: no argument for '-cs'\n");
 324                                 usage_client();
 325                                 goto client_exit_error;
 326                         }
 327                         arg = argv[i];
 328                         if (suites != NULL) {
 329                                 fprintf(stderr, "ERROR: duplicate list"
 330                                         " of cipher suites\n");
 331                                 usage_client();
 332                                 goto client_exit_error;
 333                         }
 334                         suites = parse_suites(arg, &num_suites);
 335                         if (suites == NULL) {
 336                                 usage_client();
 337                                 goto client_exit_error;
 338                         }
 339                 } else if (eqstr(arg, "-hf")) {
 340                         unsigned x;
 341
 342                         if (++ i >= argc) {
 343                                 fprintf(stderr,
 344                                         "ERROR: no argument for '-hf'\n");
 345                                 usage_client();
 346                                 goto client_exit_error;
 347                         }
 348                         arg = argv[i];
 349                         x = parse_hash_functions(arg);
 350                         if (x == 0) {
 351                                 usage_client();
 352                                 goto client_exit_error;
 353                         }
 354                         hfuns |= x;
 355                 } else if (eqstr(arg, "-minhello")) {
 356                         if (++ i >= argc) {
 357                                 fprintf(stderr,
 358                                         "ERROR: no argument for '-minhello'\n");
 359                                 usage_client();
 360                                 goto client_exit_error;
 361                         }
 362                         arg = argv[i];
 363                         if (minhello_len != (size_t)-1) {
 364                                 fprintf(stderr, "ERROR: duplicate minium"
 365                                         " ClientHello length\n");
 366                                 usage_client();
 367                                 goto client_exit_error;
 368                         }
 369                         minhello_len = parse_size(arg);
 370                         /*
 371                          * Minimum ClientHello length must fit on 16 bits.
 372                          */
 373                         if (minhello_len == (size_t)-1
 374                                 || (((minhello_len >> 12) >> 4) != 0))
 375                         {
 376                                 usage_client();
 377                                 goto client_exit_error;
 378                         }
 379                 } else {
 380                         fprintf(stderr, "ERROR: unknown option: '%s'\n", arg);
 381                         usage_client();
 382                         goto client_exit_error;
 383                 }
 384         }
 385         if (server_name == NULL) {
 386                 fprintf(stderr, "ERROR: no server name/address provided\n");
 387                 usage_client();
 388                 goto client_exit_error;
 389         }
 390         for (u = strlen(server_name); u > 0; u --) {
 391                 int c = server_name[u - 1];
 392                 if (c == ':') {
 393                         break;
 394                 }
 395                 if (c < '0' || c > '9') {
 396                         u = 0;
 397                         break;
 398                 }
 399         }
 400         if (u == 0) {
 401                 host = xstrdup(server_name);
 402                 port = "443";
 403         } else {
 404                 port = xstrdup(server_name + u);
 405                 host = xmalloc(u);
 406                 memcpy(host, server_name, u - 1);
 407                 host[u - 1] = 0;
 408         }
 409         if (sni == NULL) {
 410                 sni = host;
 411         }
 412
 413         if (vmin == 0) {
 414                 vmin = BR_TLS10;
 415         }
 416         if (vmax == 0) {
 417                 vmax = BR_TLS12;
 418         }
 419         if (vmax < vmin) {
 420                 fprintf(stderr, "ERROR: impossible minimum/maximum protocol"
 421                         " version combination\n");
 422                 usage_client();
 423                 goto client_exit_error;
 424         }
 425         if (suites == NULL) {
 426                 num_suites = 0;
 427
 428                 for (u = 0; cipher_suites[u].name; u ++) {
 429                         if ((cipher_suites[u].req & REQ_TLS12) == 0
 430                                 || vmax >= BR_TLS12)
 431                         {
 432                                 num_suites ++;
 433                         }
 434                 }
 435                 suites = xmalloc(num_suites * sizeof *suites);
 436                 num_suites = 0;
 437                 for (u = 0; cipher_suites[u].name; u ++) {
 438                         if ((cipher_suites[u].req & REQ_TLS12) == 0
 439                                 || vmax >= BR_TLS12)
 440                         {
 441                                 suites[num_suites ++] = cipher_suites[u];
 442                         }
 443                 }
 444         }
 445         if (hfuns == 0) {
 446                 hfuns = (unsigned)-1;
 447         }
 448         if (iobuf_len == 0) {
 449                 if (bidi) {
 450                         iobuf_len = BR_SSL_BUFSIZE_BIDI;
 451                 } else {
 452                         iobuf_len = BR_SSL_BUFSIZE_MONO;
 453                 }
 454         }
 455         iobuf = xmalloc(iobuf_len);
 456
 457         /*
 458          * Compute implementation requirements and inject implementations.
 459          */
 460         suite_ids = xmalloc(num_suites * sizeof *suite_ids);
 461         br_ssl_client_zero(&cc);
 462         br_ssl_engine_set_versions(&cc.eng, vmin, vmax);
 463         dnhash = NULL;
 464         for (u = 0; hash_functions[u].name; u ++) {
 465                 const br_hash_class *hc;
 466                 int id;
 467
 468                 hc = hash_functions[u].hclass;
 469                 id = (hc->desc >> BR_HASHDESC_ID_OFF) & BR_HASHDESC_ID_MASK;
 470                 if ((hfuns & ((unsigned)1 << id)) != 0) {
 471                         dnhash = hc;
 472                 }
 473         }
 474         if (dnhash == NULL) {
 475                 fprintf(stderr, "ERROR: no supported hash function\n");
 476                 goto client_exit_error;
 477         }
 478         br_x509_minimal_init(&xc, dnhash,
 479                 &VEC_ELT(anchors, 0), VEC_LEN(anchors));
 480         if (vmin <= BR_TLS11) {
 481                 if (!(hfuns & (1 << br_md5_ID))) {
 482                         fprintf(stderr, "ERROR: TLS 1.0 and 1.1 need MD5\n");
 483                         goto client_exit_error;
 484                 }
 485                 if (!(hfuns & (1 << br_sha1_ID))) {
 486                         fprintf(stderr, "ERROR: TLS 1.0 and 1.1 need SHA-1\n");
 487                         goto client_exit_error;
 488                 }
 489         }
 490         for (u = 0; u < num_suites; u ++) {
 491                 unsigned req;
 492
 493                 req = suites[u].req;
 494                 suite_ids[u] = suites[u].suite;
 495                 if ((req & REQ_TLS12) != 0 && vmax < BR_TLS12) {
 496                         fprintf(stderr,
 497                                 "ERROR: cipher suite %s requires TLS 1.2\n",
 498                                 suites[u].name);
 499                         goto client_exit_error;
 500                 }
 501                 if ((req & REQ_SHA1) != 0 && !(hfuns & (1 << br_sha1_ID))) {
 502                         fprintf(stderr,
 503                                 "ERROR: cipher suite %s requires SHA-1\n",
 504                                 suites[u].name);
 505                         goto client_exit_error;
 506                 }
 507                 if ((req & REQ_SHA256) != 0 && !(hfuns & (1 << br_sha256_ID))) {
 508                         fprintf(stderr,
 509                                 "ERROR: cipher suite %s requires SHA-256\n",
 510                                 suites[u].name);
 511                         goto client_exit_error;
 512                 }
 513                 if ((req & REQ_SHA384) != 0 && !(hfuns & (1 << br_sha384_ID))) {
 514                         fprintf(stderr,
 515                                 "ERROR: cipher suite %s requires SHA-384\n",
 516                                 suites[u].name);
 517                         goto client_exit_error;
 518                 }
 519                 /* TODO: algorithm implementation selection */
 520                 if ((req & REQ_AESCBC) != 0) {
 521                         br_ssl_engine_set_aes_cbc(&cc.eng,
 522                                 &br_aes_ct_cbcenc_vtable,
 523                                 &br_aes_ct_cbcdec_vtable);
 524                         br_ssl_engine_set_cbc(&cc.eng,
 525                                 &br_sslrec_in_cbc_vtable,
 526                                 &br_sslrec_out_cbc_vtable);
 527                 }
 528                 if ((req & REQ_AESGCM) != 0) {
 529                         br_ssl_engine_set_aes_ctr(&cc.eng,
 530                                 &br_aes_ct_ctr_vtable);
 531                         br_ssl_engine_set_ghash(&cc.eng,
 532                                 &br_ghash_ctmul);
 533                         br_ssl_engine_set_gcm(&cc.eng,
 534                                 &br_sslrec_in_gcm_vtable,
 535                                 &br_sslrec_out_gcm_vtable);
 536                 }
 537                 if ((req & REQ_3DESCBC) != 0) {
 538                         br_ssl_engine_set_des_cbc(&cc.eng,
 539                                 &br_des_ct_cbcenc_vtable,
 540                                 &br_des_ct_cbcdec_vtable);
 541                         br_ssl_engine_set_cbc(&cc.eng,
 542                                 &br_sslrec_in_cbc_vtable,
 543                                 &br_sslrec_out_cbc_vtable);
 544                 }
 545                 if ((req & REQ_RSAKEYX) != 0) {
 546                         br_ssl_client_set_rsapub(&cc, &br_rsa_i31_public);
 547                 }
 548                 if ((req & REQ_ECDHE_RSA) != 0) {
 549                         br_ssl_engine_set_ec(&cc.eng, &br_ec_prime_i31);
 550                         br_ssl_client_set_rsavrfy(&cc, &br_rsa_i31_pkcs1_vrfy);
 551                 }
 552                 if ((req & REQ_ECDHE_ECDSA) != 0) {
 553                         br_ssl_engine_set_ec(&cc.eng, &br_ec_prime_i31);
 554                         br_ssl_client_set_ecdsa(&cc, &br_ecdsa_i31_vrfy_asn1);
 555                 }
 556                 if ((req & REQ_ECDH) != 0) {
 557                         br_ssl_engine_set_ec(&cc.eng, &br_ec_prime_i31);
 558                 }
 559         }
 560         br_ssl_engine_set_suites(&cc.eng, suite_ids, num_suites);
 561
 562         for (u = 0; hash_functions[u].name; u ++) {
 563                 const br_hash_class *hc;
 564                 int id;
 565
 566                 hc = hash_functions[u].hclass;
 567                 id = (hc->desc >> BR_HASHDESC_ID_OFF) & BR_HASHDESC_ID_MASK;
 568                 if ((hfuns & ((unsigned)1 << id)) != 0) {
 569                         br_ssl_engine_set_hash(&cc.eng, id, hc);
 570                         br_x509_minimal_set_hash(&xc, id, hc);
 571                 }
 572         }
 573         if (vmin <= BR_TLS11) {
 574                 br_ssl_engine_set_prf10(&cc.eng, &br_tls10_prf);
 575         }
 576         if (vmax >= BR_TLS12) {
 577                 if ((hfuns & ((unsigned)1 << br_sha256_ID)) != 0) {
 578                         br_ssl_engine_set_prf_sha256(&cc.eng,
 579                                 &br_tls12_sha256_prf);
 580                 }
 581                 if ((hfuns & ((unsigned)1 << br_sha384_ID)) != 0) {
 582                         br_ssl_engine_set_prf_sha384(&cc.eng,
 583                                 &br_tls12_sha384_prf);
 584                 }
 585         }
 586         br_x509_minimal_set_rsa(&xc, &br_rsa_i31_pkcs1_vrfy);
 587         br_x509_minimal_set_ecdsa(&xc,
 588                 &br_ec_prime_i31, &br_ecdsa_i31_vrfy_asn1);
 589
 590         /*
 591          * If there is no provided trust anchor, then certificate validation
 592          * will always fail. In that situation, we use our custom wrapper
 593          * that tolerates unknown anchors.
 594          */
 595         if (VEC_LEN(anchors) == 0) {
 596                 if (verbose) {
 597                         fprintf(stderr,
 598                                 "WARNING: no configured trust anchor\n");
 599                 }
 600                 x509_noanchor_init(&xwc, &xc.vtable);
 601                 br_ssl_engine_set_x509(&cc.eng, &xwc.vtable);
 602         } else {
 603                 br_ssl_engine_set_x509(&cc.eng, &xc.vtable);
 604         }
 605
 606         if (minhello_len != (size_t)-1) {
 607                 br_ssl_client_set_min_clienthello_len(&cc, minhello_len);
 608         }
 609
 610         br_ssl_engine_set_buffer(&cc.eng, iobuf, iobuf_len, bidi);
 611         br_ssl_client_reset(&cc, sni, 0);
 612
 613         /*
 614          * Connect to the peer.
 615          */
 616         fd = host_connect(host, port, verbose);
 617         if (fd < 0) {
 618                 goto client_exit_error;
 619         }
 620
 621         /*
 622          * Run the engine until completion.
 623          */
 624         if (run_ssl_engine(&cc.eng, fd,
 625                 (verbose ? RUN_ENGINE_VERBOSE : 0)
 626                 | (trace ? RUN_ENGINE_TRACE : 0)) != 0)
 627         {
 628                 goto client_exit_error;
 629         } else {
 630                 goto client_exit;
 631         }
 632
 633         /*
 634          * Release allocated structures.
 635          */
 636 client_exit:
 637         xfree(host);
 638         xfree(suites);
 639         xfree(suite_ids);
 640         VEC_CLEAREXT(anchors, &free_ta_contents);
 641         xfree(iobuf);
 642         if (fd >= 0) {
 643                 close(fd);
 644         }
 645         return retcode;
 646
 647 client_exit_error:
 648         retcode = -1;
 649         goto client_exit;
 650 }