apps/ocsp.c

   1 /* ocsp.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 #ifndef OPENSSL_NO_OCSP
  59
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <openssl/e_os2.h>
  64 #include <openssl/bio.h>
  65 #include <openssl/ocsp.h>
  66 #include <openssl/txt_db.h>
  67 #include <openssl/ssl.h>
  68 #include "apps.h"
  69
  70 /* Maximum leeway in validity period: default 5 minutes */
  71 #define MAX_VALIDITY_PERIOD     (5 * 60)
  72
  73 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
  74                                 STACK_OF(OCSP_CERTID) *ids);
  75 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
  76                                 STACK_OF(OCSP_CERTID) *ids);
  77 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  78                                 STACK *names, STACK_OF(OCSP_CERTID) *ids,
  79                                 long nsec, long maxage);
  80
  81 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
  82                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
  83                         STACK_OF(X509) *rother, unsigned long flags,
  84                         int nmin, int ndays);
  85
  86 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  87 static BIO *init_responder(char *port);
  88 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
  89 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
  90 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
  91                                 OCSP_REQUEST *req, int req_timeout);
  92
  93 #undef PROG
  94 #define PROG ocsp_main
  95
  96 int MAIN(int, char **);
  97
  98 int MAIN(int argc, char **argv)
  99         {
 100         ENGINE *e = NULL;
 101         char **args;
 102         char *host = NULL, *port = NULL, *path = "/";
 103         char *reqin = NULL, *respin = NULL;
 104         char *reqout = NULL, *respout = NULL;
 105         char *signfile = NULL, *keyfile = NULL;
 106         char *rsignfile = NULL, *rkeyfile = NULL;
 107         char *outfile = NULL;
 108         int add_nonce = 1, noverify = 0, use_ssl = -1;
 109         OCSP_REQUEST *req = NULL;
 110         OCSP_RESPONSE *resp = NULL;
 111         OCSP_BASICRESP *bs = NULL;
 112         X509 *issuer = NULL, *cert = NULL;
 113         X509 *signer = NULL, *rsigner = NULL;
 114         EVP_PKEY *key = NULL, *rkey = NULL;
 115         BIO *acbio = NULL, *cbio = NULL;
 116         BIO *derbio = NULL;
 117         BIO *out = NULL;
 118         int req_timeout = -1;
 119         int req_text = 0, resp_text = 0;
 120         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 121         char *CAfile = NULL, *CApath = NULL;
 122         X509_STORE *store = NULL;
 123         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 124         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 125         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 126         int ret = 1;
 127         int accept_count = -1;
 128         int badarg = 0;
 129         int i;
 130         int ignore_err = 0;
 131         STACK *reqnames = NULL;
 132         STACK_OF(OCSP_CERTID) *ids = NULL;
 133
 134         X509 *rca_cert = NULL;
 135         char *ridx_filename = NULL;
 136         char *rca_filename = NULL;
 137         CA_DB *rdb = NULL;
 138         int nmin = 0, ndays = -1;
 139
 140         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 141
 142         if (!load_config(bio_err, NULL))
 143                 goto end;
 144         SSL_load_error_strings();
 145         OpenSSL_add_ssl_algorithms();
 146         args = argv + 1;
 147         reqnames = sk_new_null();
 148         ids = sk_OCSP_CERTID_new_null();
 149         while (!badarg && *args && *args[0] == '-')
 150                 {
 151                 if (!strcmp(*args, "-out"))
 152                         {
 153                         if (args[1])
 154                                 {
 155                                 args++;
 156                                 outfile = *args;
 157                                 }
 158                         else badarg = 1;
 159                         }
 160                 else if (!strcmp(*args, "-timeout"))
 161                         {
 162                         if (args[1])
 163                                 {
 164                                 args++;
 165                                 req_timeout = atol(*args);
 166                                 if (req_timeout < 0)
 167                                         {
 168                                         BIO_printf(bio_err,
 169                                                 "Illegal timeout value %s\n",
 170                                                 *args);
 171                                         badarg = 1;
 172                                         }
 173                                 }
 174                         else badarg = 1;
 175                         }
 176                 else if (!strcmp(*args, "-url"))
 177                         {
 178                         if (args[1])
 179                                 {
 180                                 args++;
 181                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 182                                         {
 183                                         BIO_printf(bio_err, "Error parsing URL\n");
 184                                         badarg = 1;
 185                                         }
 186                                 }
 187                         else badarg = 1;
 188                         }
 189                 else if (!strcmp(*args, "-host"))
 190                         {
 191                         if (args[1])
 192                                 {
 193                                 args++;
 194                                 host = *args;
 195                                 }
 196                         else badarg = 1;
 197                         }
 198                 else if (!strcmp(*args, "-port"))
 199                         {
 200                         if (args[1])
 201                                 {
 202                                 args++;
 203                                 port = *args;
 204                                 }
 205                         else badarg = 1;
 206                         }
 207                 else if (!strcmp(*args, "-ignore_err"))
 208                         ignore_err = 1;
 209                 else if (!strcmp(*args, "-noverify"))
 210                         noverify = 1;
 211                 else if (!strcmp(*args, "-nonce"))
 212                         add_nonce = 2;
 213                 else if (!strcmp(*args, "-no_nonce"))
 214                         add_nonce = 0;
 215                 else if (!strcmp(*args, "-resp_no_certs"))
 216                         rflags |= OCSP_NOCERTS;
 217                 else if (!strcmp(*args, "-resp_key_id"))
 218                         rflags |= OCSP_RESPID_KEY;
 219                 else if (!strcmp(*args, "-no_certs"))
 220                         sign_flags |= OCSP_NOCERTS;
 221                 else if (!strcmp(*args, "-no_signature_verify"))
 222                         verify_flags |= OCSP_NOSIGS;
 223                 else if (!strcmp(*args, "-no_cert_verify"))
 224                         verify_flags |= OCSP_NOVERIFY;
 225                 else if (!strcmp(*args, "-no_chain"))
 226                         verify_flags |= OCSP_NOCHAIN;
 227                 else if (!strcmp(*args, "-no_cert_checks"))
 228                         verify_flags |= OCSP_NOCHECKS;
 229                 else if (!strcmp(*args, "-no_explicit"))
 230                         verify_flags |= OCSP_NOEXPLICIT;
 231                 else if (!strcmp(*args, "-trust_other"))
 232                         verify_flags |= OCSP_TRUSTOTHER;
 233                 else if (!strcmp(*args, "-no_intern"))
 234                         verify_flags |= OCSP_NOINTERN;
 235                 else if (!strcmp(*args, "-text"))
 236                         {
 237                         req_text = 1;
 238                         resp_text = 1;
 239                         }
 240                 else if (!strcmp(*args, "-req_text"))
 241                         req_text = 1;
 242                 else if (!strcmp(*args, "-resp_text"))
 243                         resp_text = 1;
 244                 else if (!strcmp(*args, "-reqin"))
 245                         {
 246                         if (args[1])
 247                                 {
 248                                 args++;
 249                                 reqin = *args;
 250                                 }
 251                         else badarg = 1;
 252                         }
 253                 else if (!strcmp(*args, "-respin"))
 254                         {
 255                         if (args[1])
 256                                 {
 257                                 args++;
 258                                 respin = *args;
 259                                 }
 260                         else badarg = 1;
 261                         }
 262                 else if (!strcmp(*args, "-signer"))
 263                         {
 264                         if (args[1])
 265                                 {
 266                                 args++;
 267                                 signfile = *args;
 268                                 }
 269                         else badarg = 1;
 270                         }
 271                 else if (!strcmp (*args, "-VAfile"))
 272                         {
 273                         if (args[1])
 274                                 {
 275                                 args++;
 276                                 verify_certfile = *args;
 277                                 verify_flags |= OCSP_TRUSTOTHER;
 278                                 }
 279                         else badarg = 1;
 280                         }
 281                 else if (!strcmp(*args, "-sign_other"))
 282                         {
 283                         if (args[1])
 284                                 {
 285                                 args++;
 286                                 sign_certfile = *args;
 287                                 }
 288                         else badarg = 1;
 289                         }
 290                 else if (!strcmp(*args, "-verify_other"))
 291                         {
 292                         if (args[1])
 293                                 {
 294                                 args++;
 295                                 verify_certfile = *args;
 296                                 }
 297                         else badarg = 1;
 298                         }
 299                 else if (!strcmp (*args, "-CAfile"))
 300                         {
 301                         if (args[1])
 302                                 {
 303                                 args++;
 304                                 CAfile = *args;
 305                                 }
 306                         else badarg = 1;
 307                         }
 308                 else if (!strcmp (*args, "-CApath"))
 309                         {
 310                         if (args[1])
 311                                 {
 312                                 args++;
 313                                 CApath = *args;
 314                                 }
 315                         else badarg = 1;
 316                         }
 317                 else if (!strcmp (*args, "-validity_period"))
 318                         {
 319                         if (args[1])
 320                                 {
 321                                 args++;
 322                                 nsec = atol(*args);
 323                                 if (nsec < 0)
 324                                         {
 325                                         BIO_printf(bio_err,
 326                                                 "Illegal validity period %s\n",
 327                                                 *args);
 328                                         badarg = 1;
 329                                         }
 330                                 }
 331                         else badarg = 1;
 332                         }
 333                 else if (!strcmp (*args, "-status_age"))
 334                         {
 335                         if (args[1])
 336                                 {
 337                                 args++;
 338                                 maxage = atol(*args);
 339                                 if (maxage < 0)
 340                                         {
 341                                         BIO_printf(bio_err,
 342                                                 "Illegal validity age %s\n",
 343                                                 *args);
 344                                         badarg = 1;
 345                                         }
 346                                 }
 347                         else badarg = 1;
 348                         }
 349                  else if (!strcmp(*args, "-signkey"))
 350                         {
 351                         if (args[1])
 352                                 {
 353                                 args++;
 354                                 keyfile = *args;
 355                                 }
 356                         else badarg = 1;
 357                         }
 358                 else if (!strcmp(*args, "-reqout"))
 359                         {
 360                         if (args[1])
 361                                 {
 362                                 args++;
 363                                 reqout = *args;
 364                                 }
 365                         else badarg = 1;
 366                         }
 367                 else if (!strcmp(*args, "-respout"))
 368                         {
 369                         if (args[1])
 370                                 {
 371                                 args++;
 372                                 respout = *args;
 373                                 }
 374                         else badarg = 1;
 375                         }
 376                  else if (!strcmp(*args, "-path"))
 377                         {
 378                         if (args[1])
 379                                 {
 380                                 args++;
 381                                 path = *args;
 382                                 }
 383                         else badarg = 1;
 384                         }
 385                 else if (!strcmp(*args, "-issuer"))
 386                         {
 387                         if (args[1])
 388                                 {
 389                                 args++;
 390                                 X509_free(issuer);
 391                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 392                                         NULL, e, "issuer certificate");
 393                                 if(!issuer) goto end;
 394                                 }
 395                         else badarg = 1;
 396                         }
 397                 else if (!strcmp (*args, "-cert"))
 398                         {
 399                         if (args[1])
 400                                 {
 401                                 args++;
 402                                 X509_free(cert);
 403                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 404                                         NULL, e, "certificate");
 405                                 if(!cert) goto end;
 406                                 if(!add_ocsp_cert(&req, cert, issuer, ids))
 407                                         goto end;
 408                                 if(!sk_push(reqnames, *args))
 409                                         goto end;
 410                                 }
 411                         else badarg = 1;
 412                         }
 413                 else if (!strcmp(*args, "-serial"))
 414                         {
 415                         if (args[1])
 416                                 {
 417                                 args++;
 418                                 if(!add_ocsp_serial(&req, *args, issuer, ids))
 419                                         goto end;
 420                                 if(!sk_push(reqnames, *args))
 421                                         goto end;
 422                                 }
 423                         else badarg = 1;
 424                         }
 425                 else if (!strcmp(*args, "-index"))
 426                         {
 427                         if (args[1])
 428                                 {
 429                                 args++;
 430                                 ridx_filename = *args;
 431                                 }
 432                         else badarg = 1;
 433                         }
 434                 else if (!strcmp(*args, "-CA"))
 435                         {
 436                         if (args[1])
 437                                 {
 438                                 args++;
 439                                 rca_filename = *args;
 440                                 }
 441                         else badarg = 1;
 442                         }
 443                 else if (!strcmp (*args, "-nmin"))
 444                         {
 445                         if (args[1])
 446                                 {
 447                                 args++;
 448                                 nmin = atol(*args);
 449                                 if (nmin < 0)
 450                                         {
 451                                         BIO_printf(bio_err,
 452                                                 "Illegal update period %s\n",
 453                                                 *args);
 454                                         badarg = 1;
 455                                         }
 456                                 }
 457                                 if (ndays == -1)
 458                                         ndays = 0;
 459                         else badarg = 1;
 460                         }
 461                 else if (!strcmp (*args, "-nrequest"))
 462                         {
 463                         if (args[1])
 464                                 {
 465                                 args++;
 466                                 accept_count = atol(*args);
 467                                 if (accept_count < 0)
 468                                         {
 469                                         BIO_printf(bio_err,
 470                                                 "Illegal accept count %s\n",
 471                                                 *args);
 472                                         badarg = 1;
 473                                         }
 474                                 }
 475                         else badarg = 1;
 476                         }
 477                 else if (!strcmp (*args, "-ndays"))
 478                         {
 479                         if (args[1])
 480                                 {
 481                                 args++;
 482                                 ndays = atol(*args);
 483                                 if (ndays < 0)
 484                                         {
 485                                         BIO_printf(bio_err,
 486                                                 "Illegal update period %s\n",
 487                                                 *args);
 488                                         badarg = 1;
 489                                         }
 490                                 }
 491                         else badarg = 1;
 492                         }
 493                 else if (!strcmp(*args, "-rsigner"))
 494                         {
 495                         if (args[1])
 496                                 {
 497                                 args++;
 498                                 rsignfile = *args;
 499                                 }
 500                         else badarg = 1;
 501                         }
 502                 else if (!strcmp(*args, "-rkey"))
 503                         {
 504                         if (args[1])
 505                                 {
 506                                 args++;
 507                                 rkeyfile = *args;
 508                                 }
 509                         else badarg = 1;
 510                         }
 511                 else if (!strcmp(*args, "-rother"))
 512                         {
 513                         if (args[1])
 514                                 {
 515                                 args++;
 516                                 rcertfile = *args;
 517                                 }
 518                         else badarg = 1;
 519                         }
 520                 else badarg = 1;
 521                 args++;
 522                 }
 523
 524         /* Have we anything to do? */
 525         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 526
 527         if (badarg)
 528                 {
 529                 BIO_printf (bio_err, "OCSP utility\n");
 530                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 531                 BIO_printf (bio_err, "where options are\n");
 532                 BIO_printf (bio_err, "-out file          output filename\n");
 533                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 534                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 535                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 536                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 537                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 538                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 539                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 540                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 541                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 542                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 543                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 544                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 545                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 546                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 547                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 548                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 549                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 550                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 551                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 552                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 553                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 554                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 555                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 556                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 557                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 558                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 559                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 560                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 561                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 562                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 563                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 564                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 565                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 566                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 567                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 568                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 569                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 570                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 571                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 572                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 573                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 574                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 575                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 576                 goto end;
 577                 }
 578
 579         if(outfile) out = BIO_new_file(outfile, "w");
 580         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 581
 582         if(!out)
 583                 {
 584                 BIO_printf(bio_err, "Error opening output file\n");
 585                 goto end;
 586                 }
 587
 588         if (!req && (add_nonce != 2)) add_nonce = 0;
 589
 590         if (!req && reqin)
 591                 {
 592                 derbio = BIO_new_file(reqin, "rb");
 593                 if (!derbio)
 594                         {
 595                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 596                         goto end;
 597                         }
 598                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 599                 BIO_free(derbio);
 600                 if(!req)
 601                         {
 602                         BIO_printf(bio_err, "Error reading OCSP request\n");
 603                         goto end;
 604                         }
 605                 }
 606
 607         if (!req && port)
 608                 {
 609                 acbio = init_responder(port);
 610                 if (!acbio)
 611                         goto end;
 612                 }
 613
 614         if (rsignfile && !rdb)
 615                 {
 616                 if (!rkeyfile) rkeyfile = rsignfile;
 617                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 618                         NULL, e, "responder certificate");
 619                 if (!rsigner)
 620                         {
 621                         BIO_printf(bio_err, "Error loading responder certificate\n");
 622                         goto end;
 623                         }
 624                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 625                         NULL, e, "CA certificate");
 626                 if (rcertfile)
 627                         {
 628                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 629                                 NULL, e, "responder other certificates");
 630                         if (!rother) goto end;
 631                         }
 632                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 633                         "responder private key");
 634                 if (!rkey)
 635                         goto end;
 636                 }
 637         if(acbio)
 638                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 639
 640         redo_accept:
 641
 642         if (acbio)
 643                 {
 644                 if (!do_responder(&req, &cbio, acbio, port))
 645                         goto end;
 646                 if (!req)
 647                         {
 648                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 649                         send_ocsp_response(cbio, resp);
 650                         goto done_resp;
 651                         }
 652                 }
 653
 654         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 655                 {
 656                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 657                 goto end;
 658                 }
 659
 660         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 661
 662         if (signfile)
 663                 {
 664                 if (!keyfile) keyfile = signfile;
 665                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 666                         NULL, e, "signer certificate");
 667                 if (!signer)
 668                         {
 669                         BIO_printf(bio_err, "Error loading signer certificate\n");
 670                         goto end;
 671                         }
 672                 if (sign_certfile)
 673                         {
 674                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 675                                 NULL, e, "signer certificates");
 676                         if (!sign_other) goto end;
 677                         }
 678                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 679                         "signer private key");
 680                 if (!key)
 681                         goto end;
 682                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
 683                         {
 684                         BIO_printf(bio_err, "Error signing OCSP request\n");
 685                         goto end;
 686                         }
 687                 }
 688
 689         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 690
 691         if (reqout)
 692                 {
 693                 derbio = BIO_new_file(reqout, "wb");
 694                 if(!derbio)
 695                         {
 696                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 697                         goto end;
 698                         }
 699                 i2d_OCSP_REQUEST_bio(derbio, req);
 700                 BIO_free(derbio);
 701                 }
 702
 703         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 704                 {
 705                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 706                 goto end;
 707                 }
 708
 709         if (ridx_filename && !rdb)
 710                 {
 711                 rdb = load_index(ridx_filename, NULL);
 712                 if (!rdb) goto end;
 713                 if (!index_index(rdb)) goto end;
 714                 }
 715
 716         if (rdb)
 717                 {
 718                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
 719                 if (cbio)
 720                         send_ocsp_response(cbio, resp);
 721                 }
 722         else if (host)
 723                 {
 724 #ifndef OPENSSL_NO_SOCK
 725                 resp = process_responder(bio_err, req, host, path,
 726                                                 port, use_ssl, req_timeout);
 727                 if (!resp)
 728                         goto end;
 729 #else
 730                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 731                 goto end;
 732 #endif
 733                 }
 734         else if (respin)
 735                 {
 736                 derbio = BIO_new_file(respin, "rb");
 737                 if (!derbio)
 738                         {
 739                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 740                         goto end;
 741                         }
 742                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 743                 BIO_free(derbio);
 744                 if(!resp)
 745                         {
 746                         BIO_printf(bio_err, "Error reading OCSP response\n");
 747                         goto end;
 748                         }
 749
 750                 }
 751         else
 752                 {
 753                 ret = 0;
 754                 goto end;
 755                 }
 756
 757         done_resp:
 758
 759         if (respout)
 760                 {
 761                 derbio = BIO_new_file(respout, "wb");
 762                 if(!derbio)
 763                         {
 764                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 765                         goto end;
 766                         }
 767                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 768                 BIO_free(derbio);
 769                 }
 770
 771         i = OCSP_response_status(resp);
 772
 773         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 774                 {
 775                 BIO_printf(out, "Responder Error: %s (%d)\n",
 776                                 OCSP_response_status_str(i), i);
 777                 if (ignore_err)
 778                         goto redo_accept;
 779                 ret = 0;
 780                 goto end;
 781                 }
 782
 783         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 784
 785         /* If running as responder don't verify our own response */
 786         if (cbio)
 787                 {
 788                 if (accept_count > 0)
 789                         accept_count--;
 790                 /* Redo if more connections needed */
 791                 if (accept_count)
 792                         {
 793                         BIO_free_all(cbio);
 794                         cbio = NULL;
 795                         OCSP_REQUEST_free(req);
 796                         req = NULL;
 797                         OCSP_RESPONSE_free(resp);
 798                         resp = NULL;
 799                         goto redo_accept;
 800                         }
 801                 goto end;
 802                 }
 803
 804         if (!store)
 805                 store = setup_verify(bio_err, CAfile, CApath);
 806         if (!store)
 807                 goto end;
 808         if (verify_certfile)
 809                 {
 810                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 811                         NULL, e, "validator certificate");
 812                 if (!verify_other) goto end;
 813                 }
 814
 815         bs = OCSP_response_get1_basic(resp);
 816
 817         if (!bs)
 818                 {
 819                 BIO_printf(bio_err, "Error parsing response\n");
 820                 goto end;
 821                 }
 822
 823         if (!noverify)
 824                 {
 825                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 826                         {
 827                         if (i == -1)
 828                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 829                         else
 830                                 {
 831                                 BIO_printf(bio_err, "Nonce Verify error\n");
 832                                 goto end;
 833                                 }
 834                         }
 835
 836                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 837                 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
 838
 839                 if(i <= 0)
 840                         {
 841                         BIO_printf(bio_err, "Response Verify Failure\n");
 842                         ERR_print_errors(bio_err);
 843                         }
 844                 else
 845                         BIO_printf(bio_err, "Response verify OK\n");
 846
 847                 }
 848
 849         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 850                 goto end;
 851
 852         ret = 0;
 853
 854 end:
 855         ERR_print_errors(bio_err);
 856         X509_free(signer);
 857         X509_STORE_free(store);
 858         EVP_PKEY_free(key);
 859         EVP_PKEY_free(rkey);
 860         X509_free(issuer);
 861         X509_free(cert);
 862         X509_free(rsigner);
 863         X509_free(rca_cert);
 864         free_index(rdb);
 865         BIO_free_all(cbio);
 866         BIO_free_all(acbio);
 867         BIO_free(out);
 868         OCSP_REQUEST_free(req);
 869         OCSP_RESPONSE_free(resp);
 870         OCSP_BASICRESP_free(bs);
 871         sk_free(reqnames);
 872         sk_OCSP_CERTID_free(ids);
 873         sk_X509_pop_free(sign_other, X509_free);
 874         sk_X509_pop_free(verify_other, X509_free);
 875
 876         if (use_ssl != -1)
 877                 {
 878                 OPENSSL_free(host);
 879                 OPENSSL_free(port);
 880                 OPENSSL_free(path);
 881                 }
 882
 883         OPENSSL_EXIT(ret);
 884 }
 885
 886 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
 887                                 STACK_OF(OCSP_CERTID) *ids)
 888         {
 889         OCSP_CERTID *id;
 890         if(!issuer)
 891                 {
 892                 BIO_printf(bio_err, "No issuer certificate specified\n");
 893                 return 0;
 894                 }
 895         if(!*req) *req = OCSP_REQUEST_new();
 896         if(!*req) goto err;
 897         id = OCSP_cert_to_id(NULL, cert, issuer);
 898         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 899         if(!OCSP_request_add0_id(*req, id)) goto err;
 900         return 1;
 901
 902         err:
 903         BIO_printf(bio_err, "Error Creating OCSP request\n");
 904         return 0;
 905         }
 906
 907 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
 908                                 STACK_OF(OCSP_CERTID) *ids)
 909         {
 910         OCSP_CERTID *id;
 911         X509_NAME *iname;
 912         ASN1_BIT_STRING *ikey;
 913         ASN1_INTEGER *sno;
 914         if(!issuer)
 915                 {
 916                 BIO_printf(bio_err, "No issuer certificate specified\n");
 917                 return 0;
 918                 }
 919         if(!*req) *req = OCSP_REQUEST_new();
 920         if(!*req) goto err;
 921         iname = X509_get_subject_name(issuer);
 922         ikey = X509_get0_pubkey_bitstr(issuer);
 923         sno = s2i_ASN1_INTEGER(NULL, serial);
 924         if(!sno)
 925                 {
 926                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 927                 return 0;
 928                 }
 929         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
 930         ASN1_INTEGER_free(sno);
 931         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 932         if(!OCSP_request_add0_id(*req, id)) goto err;
 933         return 1;
 934
 935         err:
 936         BIO_printf(bio_err, "Error Creating OCSP request\n");
 937         return 0;
 938         }
 939
 940 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 941                                         STACK *names, STACK_OF(OCSP_CERTID) *ids,
 942                                         long nsec, long maxage)
 943         {
 944         OCSP_CERTID *id;
 945         char *name;
 946         int i;
 947
 948         int status, reason;
 949
 950         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 951
 952         if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
 953                 return 1;
 954
 955         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
 956                 {
 957                 id = sk_OCSP_CERTID_value(ids, i);
 958                 name = sk_value(names, i);
 959                 BIO_printf(out, "%s: ", name);
 960
 961                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
 962                                         &rev, &thisupd, &nextupd))
 963                         {
 964                         BIO_puts(out, "ERROR: No Status found.\n");
 965                         continue;
 966                         }
 967
 968                 /* Check validity: if invalid write to output BIO so we
 969                  * know which response this refers to.
 970                  */
 971                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
 972                         {
 973                         BIO_puts(out, "WARNING: Status times invalid.\n");
 974                         ERR_print_errors(out);
 975                         }
 976                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 977
 978                 BIO_puts(out, "\tThis Update: ");
 979                 ASN1_GENERALIZEDTIME_print(out, thisupd);
 980                 BIO_puts(out, "\n");
 981
 982                 if(nextupd)
 983                         {
 984                         BIO_puts(out, "\tNext Update: ");
 985                         ASN1_GENERALIZEDTIME_print(out, nextupd);
 986                         BIO_puts(out, "\n");
 987                         }
 988
 989                 if (status != V_OCSP_CERTSTATUS_REVOKED)
 990                         continue;
 991
 992                 if (reason != -1)
 993                         BIO_printf(out, "\tReason: %s\n",
 994                                 OCSP_crl_reason_str(reason));
 995
 996                 BIO_puts(out, "\tRevocation Time: ");
 997                 ASN1_GENERALIZEDTIME_print(out, rev);
 998                 BIO_puts(out, "\n");
 999                 }
1000
1001         return 1;
1002         }
1003
1004
1005 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1006                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1007                         STACK_OF(X509) *rother, unsigned long flags,
1008                         int nmin, int ndays)
1009         {
1010         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1011         OCSP_CERTID *cid, *ca_id = NULL;
1012         OCSP_BASICRESP *bs = NULL;
1013         int i, id_count, ret = 1;
1014
1015
1016         id_count = OCSP_request_onereq_count(req);
1017
1018         if (id_count <= 0)
1019                 {
1020                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1021                 goto end;
1022                 }
1023
1024         ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
1025
1026         bs = OCSP_BASICRESP_new();
1027         thisupd = X509_gmtime_adj(NULL, 0);
1028         if (ndays != -1)
1029                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1030
1031         /* Examine each certificate id in the request */
1032         for (i = 0; i < id_count; i++)
1033                 {
1034                 OCSP_ONEREQ *one;
1035                 ASN1_INTEGER *serial;
1036                 char **inf;
1037                 one = OCSP_request_onereq_get0(req, i);
1038                 cid = OCSP_onereq_get0_id(one);
1039                 /* Is this request about our CA? */
1040                 if (OCSP_id_issuer_cmp(ca_id, cid))
1041                         {
1042                         OCSP_basic_add1_status(bs, cid,
1043                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1044                                                 0, NULL,
1045                                                 thisupd, nextupd);
1046                         continue;
1047                         }
1048                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1049                 inf = lookup_serial(db, serial);
1050                 if (!inf)
1051                         OCSP_basic_add1_status(bs, cid,
1052                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1053                                                 0, NULL,
1054                                                 thisupd, nextupd);
1055                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1056                         OCSP_basic_add1_status(bs, cid,
1057                                                 V_OCSP_CERTSTATUS_GOOD,
1058                                                 0, NULL,
1059                                                 thisupd, nextupd);
1060                 else if (inf[DB_type][0] == DB_TYPE_REV)
1061                         {
1062                         ASN1_OBJECT *inst = NULL;
1063                         ASN1_TIME *revtm = NULL;
1064                         ASN1_GENERALIZEDTIME *invtm = NULL;
1065                         OCSP_SINGLERESP *single;
1066                         int reason = -1;
1067                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1068                         single = OCSP_basic_add1_status(bs, cid,
1069                                                 V_OCSP_CERTSTATUS_REVOKED,
1070                                                 reason, revtm,
1071                                                 thisupd, nextupd);
1072                         if (invtm)
1073                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1074                         else if (inst)
1075                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1076                         ASN1_OBJECT_free(inst);
1077                         ASN1_TIME_free(revtm);
1078                         ASN1_GENERALIZEDTIME_free(invtm);
1079                         }
1080                 }
1081
1082         OCSP_copy_nonce(bs, req);
1083
1084         OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
1085
1086         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1087
1088         end:
1089         ASN1_TIME_free(thisupd);
1090         ASN1_TIME_free(nextupd);
1091         OCSP_CERTID_free(ca_id);
1092         OCSP_BASICRESP_free(bs);
1093         return ret;
1094
1095         }
1096
1097 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1098         {
1099         int i;
1100         BIGNUM *bn = NULL;
1101         char *itmp, *row[DB_NUMBER],**rrow;
1102         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1103         bn = ASN1_INTEGER_to_BN(ser,NULL);
1104         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1105         if (BN_is_zero(bn))
1106                 itmp = BUF_strdup("00");
1107         else
1108                 itmp = BN_bn2hex(bn);
1109         row[DB_serial] = itmp;
1110         BN_free(bn);
1111         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1112         OPENSSL_free(itmp);
1113         return rrow;
1114         }
1115
1116 /* Quick and dirty OCSP server: read in and parse input request */
1117
1118 static BIO *init_responder(char *port)
1119         {
1120         BIO *acbio = NULL, *bufbio = NULL;
1121         bufbio = BIO_new(BIO_f_buffer());
1122         if (!bufbio)
1123                 goto err;
1124 #ifndef OPENSSL_NO_SOCK
1125         acbio = BIO_new_accept(port);
1126 #else
1127         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1128 #endif
1129         if (!acbio)
1130                 goto err;
1131         BIO_set_accept_bios(acbio, bufbio);
1132         bufbio = NULL;
1133
1134         if (BIO_do_accept(acbio) <= 0)
1135                 {
1136                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1137                         ERR_print_errors(bio_err);
1138                         goto err;
1139                 }
1140
1141         return acbio;
1142
1143         err:
1144         BIO_free_all(acbio);
1145         BIO_free(bufbio);
1146         return NULL;
1147         }
1148
1149 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1150         {
1151         int have_post = 0, len;
1152         OCSP_REQUEST *req = NULL;
1153         char inbuf[1024];
1154         BIO *cbio = NULL;
1155
1156         if (BIO_do_accept(acbio) <= 0)
1157                 {
1158                         BIO_printf(bio_err, "Error accepting connection\n");
1159                         ERR_print_errors(bio_err);
1160                         return 0;
1161                 }
1162
1163         cbio = BIO_pop(acbio);
1164         *pcbio = cbio;
1165
1166         for(;;)
1167                 {
1168                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1169                 if (len <= 0)
1170                         return 1;
1171                 /* Look for "POST" signalling start of query */
1172                 if (!have_post)
1173                         {
1174                         if(strncmp(inbuf, "POST", 4))
1175                                 {
1176                                 BIO_printf(bio_err, "Invalid request\n");
1177                                 return 1;
1178                                 }
1179                         have_post = 1;
1180                         }
1181                 /* Look for end of headers */
1182                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1183                         break;
1184                 }
1185
1186         /* Try to read OCSP request */
1187
1188         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1189
1190         if (!req)
1191                 {
1192                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1193                 ERR_print_errors(bio_err);
1194                 }
1195
1196         *preq = req;
1197
1198         return 1;
1199
1200         }
1201
1202 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1203         {
1204         char http_resp[] =
1205                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1206                 "Content-Length: %d\r\n\r\n";
1207         if (!cbio)
1208                 return 0;
1209         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1210         i2d_OCSP_RESPONSE_bio(cbio, resp);
1211         (void)BIO_flush(cbio);
1212         return 1;
1213         }
1214
1215 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1216                                 OCSP_REQUEST *req, int req_timeout)
1217         {
1218         int fd;
1219         int rv;
1220         OCSP_REQ_CTX *ctx = NULL;
1221         OCSP_RESPONSE *rsp = NULL;
1222         fd_set confds;
1223         struct timeval tv;
1224
1225         if (req_timeout != -1)
1226                 BIO_set_nbio(cbio, 1);
1227
1228         rv = BIO_do_connect(cbio);
1229
1230         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1231                 {
1232                 BIO_puts(err, "Error connecting BIO\n");
1233                 return NULL;
1234                 }
1235
1236         if (req_timeout == -1)
1237                 return OCSP_sendreq_bio(cbio, path, req);
1238
1239         if (BIO_get_fd(cbio, &fd) <= 0)
1240                 {
1241                 BIO_puts(err, "Can't get connection fd\n");
1242                 goto err;
1243                 }
1244
1245         if (rv <= 0)
1246                 {
1247                 FD_ZERO(&confds);
1248                 openssl_fdset(fd, &confds);
1249                 tv.tv_usec = 0;
1250                 tv.tv_sec = req_timeout;
1251                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1252                 if (rv == 0)
1253                         {
1254                         BIO_puts(err, "Timeout on connect\n");
1255                         return NULL;
1256                         }
1257                 }
1258
1259
1260         ctx = OCSP_sendreq_new(cbio, path, req, -1);
1261         if (!ctx)
1262                 return NULL;
1263
1264         for (;;)
1265                 {
1266                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1267                 if (rv != -1)
1268                         break;
1269                 FD_ZERO(&confds);
1270                 openssl_fdset(fd, &confds);
1271                 tv.tv_usec = 0;
1272                 tv.tv_sec = req_timeout;
1273                 if (BIO_should_read(cbio))
1274                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1275                 else if (BIO_should_write(cbio))
1276                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1277                 else
1278                         {
1279                         BIO_puts(err, "Unexpected retry condition\n");
1280                         goto err;
1281                         }
1282                 if (rv == 0)
1283                         {
1284                         BIO_puts(err, "Timeout on request\n");
1285                         break;
1286                         }
1287                 if (rv == -1)
1288                         {
1289                         BIO_puts(err, "Select error\n");
1290                         break;
1291                         }
1292
1293                 }
1294         err:
1295         if (ctx)
1296                 OCSP_REQ_CTX_free(ctx);
1297
1298         return rsp;
1299         }
1300
1301 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1302                         char *host, char *path, char *port, int use_ssl,
1303                         int req_timeout)
1304         {
1305         BIO *cbio = NULL;
1306         SSL_CTX *ctx = NULL;
1307         OCSP_RESPONSE *resp = NULL;
1308         cbio = BIO_new_connect(host);
1309         if (!cbio)
1310                 {
1311                 BIO_printf(err, "Error creating connect BIO\n");
1312                 goto end;
1313                 }
1314         if (port) BIO_set_conn_port(cbio, port);
1315         if (use_ssl == 1)
1316                 {
1317                 BIO *sbio;
1318 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1319                 ctx = SSL_CTX_new(SSLv23_client_method());
1320 #elif !defined(OPENSSL_NO_SSL3)
1321                 ctx = SSL_CTX_new(SSLv3_client_method());
1322 #elif !defined(OPENSSL_NO_SSL2)
1323                 ctx = SSL_CTX_new(SSLv2_client_method());
1324 #else
1325                 BIO_printf(err, "SSL is disabled\n");
1326                         goto end;
1327 #endif
1328                 if (ctx == NULL)
1329                         {
1330                         BIO_printf(err, "Error creating SSL context.\n");
1331                         goto end;
1332                         }
1333                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1334                 sbio = BIO_new_ssl(ctx, 1);
1335                 cbio = BIO_push(sbio, cbio);
1336                 }
1337         resp = query_responder(err, cbio, path, req, req_timeout);
1338         if (!resp)
1339                 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1340         end:
1341         if (ctx)
1342                 SSL_CTX_free(ctx);
1343         if (cbio)
1344                 BIO_free_all(cbio);
1345         return resp;
1346         }
1347
1348 #endif