apps/ocsp.c

   1 /* ocsp.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) 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 #ifdef OPENSSL_SYS_VMS
  61 #define _XOPEN_SOURCE_EXTENDED  /* So fd_set and friends get properly defined
  62                                    on OpenVMS */
  63 #endif
  64
  65 #define USE_SOCKETS
  66
  67 #include <stdio.h>
  68 #include <stdlib.h>
  69 #include <string.h>
  70 #include <time.h>
  71 #include "apps.h" /* needs to be included before the openssl headers! */
  72 #include <openssl/e_os2.h>
  73 #include <openssl/crypto.h>
  74 #include <openssl/err.h>
  75 #include <openssl/ssl.h>
  76 #include <openssl/evp.h>
  77 #include <openssl/bn.h>
  78 #include <openssl/x509v3.h>
  79
  80 #if defined(NETWARE_CLIB)
  81 #  ifdef NETWARE_BSDSOCK
  82 #    include <sys/socket.h>
  83 #    include <sys/bsdskt.h>
  84 #  else
  85 #    include <novsock2.h>
  86 #  endif
  87 #elif defined(NETWARE_LIBC)
  88 #  ifdef NETWARE_BSDSOCK
  89 #    include <sys/select.h>
  90 #  else
  91 #    include <novsock2.h>
  92 #  endif
  93 #endif
  94
  95 /* Maximum leeway in validity period: default 5 minutes */
  96 #define MAX_VALIDITY_PERIOD     (5 * 60)
  97
  98 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md, X509 *issuer,
  99                                 STACK_OF(OCSP_CERTID) *ids);
 100 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, const EVP_MD * cert_id_md, X509 *issuer,
 101                                 STACK_OF(OCSP_CERTID) *ids);
 102 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 103                               STACK_OF(OPENSSL_STRING) *names,
 104                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 105                               long maxage);
 106
 107 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
 108                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
 109                         STACK_OF(X509) *rother, unsigned long flags,
 110                         int nmin, int ndays);
 111
 112 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
 113 static BIO *init_responder(char *port);
 114 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
 115 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
 116 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
 117                                 STACK_OF(CONF_VALUE) *headers,
 118                                 OCSP_REQUEST *req, int req_timeout);
 119
 120 #undef PROG
 121 #define PROG ocsp_main
 122
 123 int MAIN(int, char **);
 124
 125 int MAIN(int argc, char **argv)
 126         {
 127         ENGINE *e = NULL;
 128         char **args;
 129         char *host = NULL, *port = NULL, *path = "/";
 130         char *reqin = NULL, *respin = NULL;
 131         char *reqout = NULL, *respout = NULL;
 132         char *signfile = NULL, *keyfile = NULL;
 133         char *rsignfile = NULL, *rkeyfile = NULL;
 134         char *outfile = NULL;
 135         int add_nonce = 1, noverify = 0, use_ssl = -1;
 136         STACK_OF(CONF_VALUE) *headers = NULL;
 137         OCSP_REQUEST *req = NULL;
 138         OCSP_RESPONSE *resp = NULL;
 139         OCSP_BASICRESP *bs = NULL;
 140         X509 *issuer = NULL, *cert = NULL;
 141         X509 *signer = NULL, *rsigner = NULL;
 142         EVP_PKEY *key = NULL, *rkey = NULL;
 143         BIO *acbio = NULL, *cbio = NULL;
 144         BIO *derbio = NULL;
 145         BIO *out = NULL;
 146         int req_timeout = -1;
 147         int req_text = 0, resp_text = 0;
 148         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 149         char *CAfile = NULL, *CApath = NULL;
 150         X509_STORE *store = NULL;
 151         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 152         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 153         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 154         int ret = 1;
 155         int accept_count = -1;
 156         int badarg = 0;
 157         int i;
 158         int ignore_err = 0;
 159         STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 160         STACK_OF(OCSP_CERTID) *ids = NULL;
 161
 162         X509 *rca_cert = NULL;
 163         char *ridx_filename = NULL;
 164         char *rca_filename = NULL;
 165         CA_DB *rdb = NULL;
 166         int nmin = 0, ndays = -1;
 167         const EVP_MD *cert_id_md = NULL;
 168
 169         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 170
 171         if (!load_config(bio_err, NULL))
 172                 goto end;
 173         SSL_load_error_strings();
 174         OpenSSL_add_ssl_algorithms();
 175         args = argv + 1;
 176         reqnames = sk_OPENSSL_STRING_new_null();
 177         ids = sk_OCSP_CERTID_new_null();
 178         while (!badarg && *args && *args[0] == '-')
 179                 {
 180                 if (!strcmp(*args, "-out"))
 181                         {
 182                         if (args[1])
 183                                 {
 184                                 args++;
 185                                 outfile = *args;
 186                                 }
 187                         else badarg = 1;
 188                         }
 189                 else if (!strcmp(*args, "-timeout"))
 190                         {
 191                         if (args[1])
 192                                 {
 193                                 args++;
 194                                 req_timeout = atol(*args);
 195                                 if (req_timeout < 0)
 196                                         {
 197                                         BIO_printf(bio_err,
 198                                                 "Illegal timeout value %s\n",
 199                                                 *args);
 200                                         badarg = 1;
 201                                         }
 202                                 }
 203                         else badarg = 1;
 204                         }
 205                 else if (!strcmp(*args, "-url"))
 206                         {
 207                         if (args[1])
 208                                 {
 209                                 args++;
 210                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 211                                         {
 212                                         BIO_printf(bio_err, "Error parsing URL\n");
 213                                         badarg = 1;
 214                                         }
 215                                 }
 216                         else badarg = 1;
 217                         }
 218                 else if (!strcmp(*args, "-host"))
 219                         {
 220                         if (args[1])
 221                                 {
 222                                 args++;
 223                                 host = *args;
 224                                 }
 225                         else badarg = 1;
 226                         }
 227                 else if (!strcmp(*args, "-port"))
 228                         {
 229                         if (args[1])
 230                                 {
 231                                 args++;
 232                                 port = *args;
 233                                 }
 234                         else badarg = 1;
 235                         }
 236                 else if (!strcmp(*args, "-header"))
 237                         {
 238                         if (args[1] && args[2])
 239                                 {
 240                                 if (!X509V3_add_value(args[1], args[2], &headers))
 241                                         goto end;
 242                                 args += 2;
 243                                 }
 244                         else badarg = 1;
 245                         }
 246                 else if (!strcmp(*args, "-ignore_err"))
 247                         ignore_err = 1;
 248                 else if (!strcmp(*args, "-noverify"))
 249                         noverify = 1;
 250                 else if (!strcmp(*args, "-nonce"))
 251                         add_nonce = 2;
 252                 else if (!strcmp(*args, "-no_nonce"))
 253                         add_nonce = 0;
 254                 else if (!strcmp(*args, "-resp_no_certs"))
 255                         rflags |= OCSP_NOCERTS;
 256                 else if (!strcmp(*args, "-resp_key_id"))
 257                         rflags |= OCSP_RESPID_KEY;
 258                 else if (!strcmp(*args, "-no_certs"))
 259                         sign_flags |= OCSP_NOCERTS;
 260                 else if (!strcmp(*args, "-no_signature_verify"))
 261                         verify_flags |= OCSP_NOSIGS;
 262                 else if (!strcmp(*args, "-no_cert_verify"))
 263                         verify_flags |= OCSP_NOVERIFY;
 264                 else if (!strcmp(*args, "-no_chain"))
 265                         verify_flags |= OCSP_NOCHAIN;
 266                 else if (!strcmp(*args, "-no_cert_checks"))
 267                         verify_flags |= OCSP_NOCHECKS;
 268                 else if (!strcmp(*args, "-no_explicit"))
 269                         verify_flags |= OCSP_NOEXPLICIT;
 270                 else if (!strcmp(*args, "-trust_other"))
 271                         verify_flags |= OCSP_TRUSTOTHER;
 272                 else if (!strcmp(*args, "-no_intern"))
 273                         verify_flags |= OCSP_NOINTERN;
 274                 else if (!strcmp(*args, "-text"))
 275                         {
 276                         req_text = 1;
 277                         resp_text = 1;
 278                         }
 279                 else if (!strcmp(*args, "-req_text"))
 280                         req_text = 1;
 281                 else if (!strcmp(*args, "-resp_text"))
 282                         resp_text = 1;
 283                 else if (!strcmp(*args, "-reqin"))
 284                         {
 285                         if (args[1])
 286                                 {
 287                                 args++;
 288                                 reqin = *args;
 289                                 }
 290                         else badarg = 1;
 291                         }
 292                 else if (!strcmp(*args, "-respin"))
 293                         {
 294                         if (args[1])
 295                                 {
 296                                 args++;
 297                                 respin = *args;
 298                                 }
 299                         else badarg = 1;
 300                         }
 301                 else if (!strcmp(*args, "-signer"))
 302                         {
 303                         if (args[1])
 304                                 {
 305                                 args++;
 306                                 signfile = *args;
 307                                 }
 308                         else badarg = 1;
 309                         }
 310                 else if (!strcmp (*args, "-VAfile"))
 311                         {
 312                         if (args[1])
 313                                 {
 314                                 args++;
 315                                 verify_certfile = *args;
 316                                 verify_flags |= OCSP_TRUSTOTHER;
 317                                 }
 318                         else badarg = 1;
 319                         }
 320                 else if (!strcmp(*args, "-sign_other"))
 321                         {
 322                         if (args[1])
 323                                 {
 324                                 args++;
 325                                 sign_certfile = *args;
 326                                 }
 327                         else badarg = 1;
 328                         }
 329                 else if (!strcmp(*args, "-verify_other"))
 330                         {
 331                         if (args[1])
 332                                 {
 333                                 args++;
 334                                 verify_certfile = *args;
 335                                 }
 336                         else badarg = 1;
 337                         }
 338                 else if (!strcmp (*args, "-CAfile"))
 339                         {
 340                         if (args[1])
 341                                 {
 342                                 args++;
 343                                 CAfile = *args;
 344                                 }
 345                         else badarg = 1;
 346                         }
 347                 else if (!strcmp (*args, "-CApath"))
 348                         {
 349                         if (args[1])
 350                                 {
 351                                 args++;
 352                                 CApath = *args;
 353                                 }
 354                         else badarg = 1;
 355                         }
 356                 else if (!strcmp (*args, "-validity_period"))
 357                         {
 358                         if (args[1])
 359                                 {
 360                                 args++;
 361                                 nsec = atol(*args);
 362                                 if (nsec < 0)
 363                                         {
 364                                         BIO_printf(bio_err,
 365                                                 "Illegal validity period %s\n",
 366                                                 *args);
 367                                         badarg = 1;
 368                                         }
 369                                 }
 370                         else badarg = 1;
 371                         }
 372                 else if (!strcmp (*args, "-status_age"))
 373                         {
 374                         if (args[1])
 375                                 {
 376                                 args++;
 377                                 maxage = atol(*args);
 378                                 if (maxage < 0)
 379                                         {
 380                                         BIO_printf(bio_err,
 381                                                 "Illegal validity age %s\n",
 382                                                 *args);
 383                                         badarg = 1;
 384                                         }
 385                                 }
 386                         else badarg = 1;
 387                         }
 388                  else if (!strcmp(*args, "-signkey"))
 389                         {
 390                         if (args[1])
 391                                 {
 392                                 args++;
 393                                 keyfile = *args;
 394                                 }
 395                         else badarg = 1;
 396                         }
 397                 else if (!strcmp(*args, "-reqout"))
 398                         {
 399                         if (args[1])
 400                                 {
 401                                 args++;
 402                                 reqout = *args;
 403                                 }
 404                         else badarg = 1;
 405                         }
 406                 else if (!strcmp(*args, "-respout"))
 407                         {
 408                         if (args[1])
 409                                 {
 410                                 args++;
 411                                 respout = *args;
 412                                 }
 413                         else badarg = 1;
 414                         }
 415                  else if (!strcmp(*args, "-path"))
 416                         {
 417                         if (args[1])
 418                                 {
 419                                 args++;
 420                                 path = *args;
 421                                 }
 422                         else badarg = 1;
 423                         }
 424                 else if (!strcmp(*args, "-issuer"))
 425                         {
 426                         if (args[1])
 427                                 {
 428                                 args++;
 429                                 X509_free(issuer);
 430                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 431                                         NULL, e, "issuer certificate");
 432                                 if(!issuer) goto end;
 433                                 }
 434                         else badarg = 1;
 435                         }
 436                 else if (!strcmp (*args, "-cert"))
 437                         {
 438                         if (args[1])
 439                                 {
 440                                 args++;
 441                                 X509_free(cert);
 442                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 443                                         NULL, e, "certificate");
 444                                 if(!cert) goto end;
 445                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 446                                 if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 447                                         goto end;
 448                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 449                                         goto end;
 450                                 }
 451                         else badarg = 1;
 452                         }
 453                 else if (!strcmp(*args, "-serial"))
 454                         {
 455                         if (args[1])
 456                                 {
 457                                 args++;
 458                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 459                                 if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
 460                                         goto end;
 461                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 462                                         goto end;
 463                                 }
 464                         else badarg = 1;
 465                         }
 466                 else if (!strcmp(*args, "-index"))
 467                         {
 468                         if (args[1])
 469                                 {
 470                                 args++;
 471                                 ridx_filename = *args;
 472                                 }
 473                         else badarg = 1;
 474                         }
 475                 else if (!strcmp(*args, "-CA"))
 476                         {
 477                         if (args[1])
 478                                 {
 479                                 args++;
 480                                 rca_filename = *args;
 481                                 }
 482                         else badarg = 1;
 483                         }
 484                 else if (!strcmp (*args, "-nmin"))
 485                         {
 486                         if (args[1])
 487                                 {
 488                                 args++;
 489                                 nmin = atol(*args);
 490                                 if (nmin < 0)
 491                                         {
 492                                         BIO_printf(bio_err,
 493                                                 "Illegal update period %s\n",
 494                                                 *args);
 495                                         badarg = 1;
 496                                         }
 497                                 }
 498                                 if (ndays == -1)
 499                                         ndays = 0;
 500                         else badarg = 1;
 501                         }
 502                 else if (!strcmp (*args, "-nrequest"))
 503                         {
 504                         if (args[1])
 505                                 {
 506                                 args++;
 507                                 accept_count = atol(*args);
 508                                 if (accept_count < 0)
 509                                         {
 510                                         BIO_printf(bio_err,
 511                                                 "Illegal accept count %s\n",
 512                                                 *args);
 513                                         badarg = 1;
 514                                         }
 515                                 }
 516                         else badarg = 1;
 517                         }
 518                 else if (!strcmp (*args, "-ndays"))
 519                         {
 520                         if (args[1])
 521                                 {
 522                                 args++;
 523                                 ndays = atol(*args);
 524                                 if (ndays < 0)
 525                                         {
 526                                         BIO_printf(bio_err,
 527                                                 "Illegal update period %s\n",
 528                                                 *args);
 529                                         badarg = 1;
 530                                         }
 531                                 }
 532                         else badarg = 1;
 533                         }
 534                 else if (!strcmp(*args, "-rsigner"))
 535                         {
 536                         if (args[1])
 537                                 {
 538                                 args++;
 539                                 rsignfile = *args;
 540                                 }
 541                         else badarg = 1;
 542                         }
 543                 else if (!strcmp(*args, "-rkey"))
 544                         {
 545                         if (args[1])
 546                                 {
 547                                 args++;
 548                                 rkeyfile = *args;
 549                                 }
 550                         else badarg = 1;
 551                         }
 552                 else if (!strcmp(*args, "-rother"))
 553                         {
 554                         if (args[1])
 555                                 {
 556                                 args++;
 557                                 rcertfile = *args;
 558                                 }
 559                         else badarg = 1;
 560                         }
 561                 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
 562                         {
 563                         badarg = 1;
 564                         }
 565                 args++;
 566                 }
 567
 568         /* Have we anything to do? */
 569         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 570
 571         if (badarg)
 572                 {
 573                 BIO_printf (bio_err, "OCSP utility\n");
 574                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 575                 BIO_printf (bio_err, "where options are\n");
 576                 BIO_printf (bio_err, "-out file          output filename\n");
 577                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 578                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 579                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 580                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 581                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 582                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 583                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 584                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 585                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 586                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 587                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 588                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 589                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 590                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 591                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 592                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 593                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 594                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 595                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 596                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 597                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 598                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 599                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 600                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 601                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 602                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 603                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 604                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 605                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 606                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 607                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 608                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 609                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 610                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 611                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 612                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 613                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 614                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 615                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 616                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 617                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 618                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 619                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 620                 BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request");
 621                 goto end;
 622                 }
 623
 624         if(outfile) out = BIO_new_file(outfile, "w");
 625         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 626
 627         if(!out)
 628                 {
 629                 BIO_printf(bio_err, "Error opening output file\n");
 630                 goto end;
 631                 }
 632
 633         if (!req && (add_nonce != 2)) add_nonce = 0;
 634
 635         if (!req && reqin)
 636                 {
 637                 derbio = BIO_new_file(reqin, "rb");
 638                 if (!derbio)
 639                         {
 640                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 641                         goto end;
 642                         }
 643                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 644                 BIO_free(derbio);
 645                 if(!req)
 646                         {
 647                         BIO_printf(bio_err, "Error reading OCSP request\n");
 648                         goto end;
 649                         }
 650                 }
 651
 652         if (!req && port)
 653                 {
 654                 acbio = init_responder(port);
 655                 if (!acbio)
 656                         goto end;
 657                 }
 658
 659         if (rsignfile && !rdb)
 660                 {
 661                 if (!rkeyfile) rkeyfile = rsignfile;
 662                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 663                         NULL, e, "responder certificate");
 664                 if (!rsigner)
 665                         {
 666                         BIO_printf(bio_err, "Error loading responder certificate\n");
 667                         goto end;
 668                         }
 669                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 670                         NULL, e, "CA certificate");
 671                 if (rcertfile)
 672                         {
 673                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 674                                 NULL, e, "responder other certificates");
 675                         if (!rother) goto end;
 676                         }
 677                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 678                         "responder private key");
 679                 if (!rkey)
 680                         goto end;
 681                 }
 682         if(acbio)
 683                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 684
 685         redo_accept:
 686
 687         if (acbio)
 688                 {
 689                 if (!do_responder(&req, &cbio, acbio, port))
 690                         goto end;
 691                 if (!req)
 692                         {
 693                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 694                         send_ocsp_response(cbio, resp);
 695                         goto done_resp;
 696                         }
 697                 }
 698
 699         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 700                 {
 701                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 702                 goto end;
 703                 }
 704
 705         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 706
 707         if (signfile)
 708                 {
 709                 if (!keyfile) keyfile = signfile;
 710                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 711                         NULL, e, "signer certificate");
 712                 if (!signer)
 713                         {
 714                         BIO_printf(bio_err, "Error loading signer certificate\n");
 715                         goto end;
 716                         }
 717                 if (sign_certfile)
 718                         {
 719                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 720                                 NULL, e, "signer certificates");
 721                         if (!sign_other) goto end;
 722                         }
 723                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 724                         "signer private key");
 725                 if (!key)
 726                         goto end;
 727
 728                 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
 729                         {
 730                         BIO_printf(bio_err, "Error signing OCSP request\n");
 731                         goto end;
 732                         }
 733                 }
 734
 735         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 736
 737         if (reqout)
 738                 {
 739                 derbio = BIO_new_file(reqout, "wb");
 740                 if(!derbio)
 741                         {
 742                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 743                         goto end;
 744                         }
 745                 i2d_OCSP_REQUEST_bio(derbio, req);
 746                 BIO_free(derbio);
 747                 }
 748
 749         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 750                 {
 751                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 752                 goto end;
 753                 }
 754
 755         if (ridx_filename && !rdb)
 756                 {
 757                 rdb = load_index(ridx_filename, NULL);
 758                 if (!rdb) goto end;
 759                 if (!index_index(rdb)) goto end;
 760                 }
 761
 762         if (rdb)
 763                 {
 764                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
 765                 if (cbio)
 766                         send_ocsp_response(cbio, resp);
 767                 }
 768         else if (host)
 769                 {
 770 #ifndef OPENSSL_NO_SOCK
 771                 resp = process_responder(bio_err, req, host, path,
 772                                         port, use_ssl, headers, req_timeout);
 773                 if (!resp)
 774                         goto end;
 775 #else
 776                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 777                 goto end;
 778 #endif
 779                 }
 780         else if (respin)
 781                 {
 782                 derbio = BIO_new_file(respin, "rb");
 783                 if (!derbio)
 784                         {
 785                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 786                         goto end;
 787                         }
 788                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 789                 BIO_free(derbio);
 790                 if(!resp)
 791                         {
 792                         BIO_printf(bio_err, "Error reading OCSP response\n");
 793                         goto end;
 794                         }
 795
 796                 }
 797         else
 798                 {
 799                 ret = 0;
 800                 goto end;
 801                 }
 802
 803         done_resp:
 804
 805         if (respout)
 806                 {
 807                 derbio = BIO_new_file(respout, "wb");
 808                 if(!derbio)
 809                         {
 810                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 811                         goto end;
 812                         }
 813                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 814                 BIO_free(derbio);
 815                 }
 816
 817         i = OCSP_response_status(resp);
 818
 819         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 820                 {
 821                 BIO_printf(out, "Responder Error: %s (%d)\n",
 822                                 OCSP_response_status_str(i), i);
 823                 if (ignore_err)
 824                         goto redo_accept;
 825                 ret = 0;
 826                 goto end;
 827                 }
 828
 829         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 830
 831         /* If running as responder don't verify our own response */
 832         if (cbio)
 833                 {
 834                 if (accept_count > 0)
 835                         accept_count--;
 836                 /* Redo if more connections needed */
 837                 if (accept_count)
 838                         {
 839                         BIO_free_all(cbio);
 840                         cbio = NULL;
 841                         OCSP_REQUEST_free(req);
 842                         req = NULL;
 843                         OCSP_RESPONSE_free(resp);
 844                         resp = NULL;
 845                         goto redo_accept;
 846                         }
 847                 ret = 0;
 848                 goto end;
 849                 }
 850         else if (ridx_filename)
 851                 {
 852                 ret = 0;
 853                 goto end;
 854                 }
 855
 856         if (!store)
 857                 store = setup_verify(bio_err, CAfile, CApath);
 858         if (!store)
 859                 goto end;
 860         if (verify_certfile)
 861                 {
 862                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 863                         NULL, e, "validator certificate");
 864                 if (!verify_other) goto end;
 865                 }
 866
 867         bs = OCSP_response_get1_basic(resp);
 868
 869         if (!bs)
 870                 {
 871                 BIO_printf(bio_err, "Error parsing response\n");
 872                 goto end;
 873                 }
 874
 875         ret = 0;
 876
 877         if (!noverify)
 878                 {
 879                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 880                         {
 881                         if (i == -1)
 882                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 883                         else
 884                                 {
 885                                 BIO_printf(bio_err, "Nonce Verify error\n");
 886                                 ret = 1;
 887                                 goto end;
 888                                 }
 889                         }
 890
 891                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 892                 if(i <= 0)
 893                         {
 894                         BIO_printf(bio_err, "Response Verify Failure\n");
 895                         ERR_print_errors(bio_err);
 896                         ret = 1;
 897                         }
 898                 else
 899                         BIO_printf(bio_err, "Response verify OK\n");
 900
 901                 }
 902
 903         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 904                 ret = 1;
 905
 906 end:
 907         ERR_print_errors(bio_err);
 908         X509_free(signer);
 909         X509_STORE_free(store);
 910         EVP_PKEY_free(key);
 911         EVP_PKEY_free(rkey);
 912         X509_free(issuer);
 913         X509_free(cert);
 914         X509_free(rsigner);
 915         X509_free(rca_cert);
 916         free_index(rdb);
 917         BIO_free_all(cbio);
 918         BIO_free_all(acbio);
 919         BIO_free(out);
 920         OCSP_REQUEST_free(req);
 921         OCSP_RESPONSE_free(resp);
 922         OCSP_BASICRESP_free(bs);
 923         sk_OPENSSL_STRING_free(reqnames);
 924         sk_OCSP_CERTID_free(ids);
 925         sk_X509_pop_free(sign_other, X509_free);
 926         sk_X509_pop_free(verify_other, X509_free);
 927         sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 928
 929         if (use_ssl != -1)
 930                 {
 931                 OPENSSL_free(host);
 932                 OPENSSL_free(port);
 933                 OPENSSL_free(path);
 934                 }
 935
 936         OPENSSL_EXIT(ret);
 937 }
 938
 939 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
 940                                 STACK_OF(OCSP_CERTID) *ids)
 941         {
 942         OCSP_CERTID *id;
 943         if(!issuer)
 944                 {
 945                 BIO_printf(bio_err, "No issuer certificate specified\n");
 946                 return 0;
 947                 }
 948         if(!*req) *req = OCSP_REQUEST_new();
 949         if(!*req) goto err;
 950         id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 951         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 952         if(!OCSP_request_add0_id(*req, id)) goto err;
 953         return 1;
 954
 955         err:
 956         BIO_printf(bio_err, "Error Creating OCSP request\n");
 957         return 0;
 958         }
 959
 960 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
 961                                 STACK_OF(OCSP_CERTID) *ids)
 962         {
 963         OCSP_CERTID *id;
 964         X509_NAME *iname;
 965         ASN1_BIT_STRING *ikey;
 966         ASN1_INTEGER *sno;
 967         if(!issuer)
 968                 {
 969                 BIO_printf(bio_err, "No issuer certificate specified\n");
 970                 return 0;
 971                 }
 972         if(!*req) *req = OCSP_REQUEST_new();
 973         if(!*req) goto err;
 974         iname = X509_get_subject_name(issuer);
 975         ikey = X509_get0_pubkey_bitstr(issuer);
 976         sno = s2i_ASN1_INTEGER(NULL, serial);
 977         if(!sno)
 978                 {
 979                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 980                 return 0;
 981                 }
 982         id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 983         ASN1_INTEGER_free(sno);
 984         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 985         if(!OCSP_request_add0_id(*req, id)) goto err;
 986         return 1;
 987
 988         err:
 989         BIO_printf(bio_err, "Error Creating OCSP request\n");
 990         return 0;
 991         }
 992
 993 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 994                               STACK_OF(OPENSSL_STRING) *names,
 995                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 996                               long maxage)
 997         {
 998         OCSP_CERTID *id;
 999         char *name;
1000         int i;
1001
1002         int status, reason;
1003
1004         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1005
1006         if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1007                 return 1;
1008
1009         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1010                 {
1011                 id = sk_OCSP_CERTID_value(ids, i);
1012                 name = sk_OPENSSL_STRING_value(names, i);
1013                 BIO_printf(out, "%s: ", name);
1014
1015                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1016                                         &rev, &thisupd, &nextupd))
1017                         {
1018                         BIO_puts(out, "ERROR: No Status found.\n");
1019                         continue;
1020                         }
1021
1022                 /* Check validity: if invalid write to output BIO so we
1023                  * know which response this refers to.
1024                  */
1025                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1026                         {
1027                         BIO_puts(out, "WARNING: Status times invalid.\n");
1028                         ERR_print_errors(out);
1029                         }
1030                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1031
1032                 BIO_puts(out, "\tThis Update: ");
1033                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1034                 BIO_puts(out, "\n");
1035
1036                 if(nextupd)
1037                         {
1038                         BIO_puts(out, "\tNext Update: ");
1039                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1040                         BIO_puts(out, "\n");
1041                         }
1042
1043                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1044                         continue;
1045
1046                 if (reason != -1)
1047                         BIO_printf(out, "\tReason: %s\n",
1048                                 OCSP_crl_reason_str(reason));
1049
1050                 BIO_puts(out, "\tRevocation Time: ");
1051                 ASN1_GENERALIZEDTIME_print(out, rev);
1052                 BIO_puts(out, "\n");
1053                 }
1054
1055         return 1;
1056         }
1057
1058
1059 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1060                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1061                         STACK_OF(X509) *rother, unsigned long flags,
1062                         int nmin, int ndays)
1063         {
1064         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1065         OCSP_CERTID *cid, *ca_id = NULL;
1066         OCSP_BASICRESP *bs = NULL;
1067         int i, id_count, ret = 1;
1068
1069         id_count = OCSP_request_onereq_count(req);
1070
1071         if (id_count <= 0)
1072                 {
1073                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1074                 goto end;
1075                 }
1076
1077
1078         bs = OCSP_BASICRESP_new();
1079         thisupd = X509_gmtime_adj(NULL, 0);
1080         if (ndays != -1)
1081                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1082
1083         /* Examine each certificate id in the request */
1084         for (i = 0; i < id_count; i++)
1085                 {
1086                 OCSP_ONEREQ *one;
1087                 ASN1_INTEGER *serial;
1088                 char **inf;
1089                 ASN1_OBJECT *cert_id_md_oid;
1090                 const EVP_MD *cert_id_md;
1091                 one = OCSP_request_onereq_get0(req, i);
1092                 cid = OCSP_onereq_get0_id(one);
1093
1094                 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1095
1096                 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1097                 if (! cert_id_md)
1098                         {
1099                         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1100                                 NULL);
1101                                 goto end;
1102                         }
1103                 if (ca_id) OCSP_CERTID_free(ca_id);
1104                 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1105
1106                 /* Is this request about our CA? */
1107                 if (OCSP_id_issuer_cmp(ca_id, cid))
1108                         {
1109                         OCSP_basic_add1_status(bs, cid,
1110                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1111                                                 0, NULL,
1112                                                 thisupd, nextupd);
1113                         continue;
1114                         }
1115                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1116                 inf = lookup_serial(db, serial);
1117                 if (!inf)
1118                         OCSP_basic_add1_status(bs, cid,
1119                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1120                                                 0, NULL,
1121                                                 thisupd, nextupd);
1122                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1123                         OCSP_basic_add1_status(bs, cid,
1124                                                 V_OCSP_CERTSTATUS_GOOD,
1125                                                 0, NULL,
1126                                                 thisupd, nextupd);
1127                 else if (inf[DB_type][0] == DB_TYPE_REV)
1128                         {
1129                         ASN1_OBJECT *inst = NULL;
1130                         ASN1_TIME *revtm = NULL;
1131                         ASN1_GENERALIZEDTIME *invtm = NULL;
1132                         OCSP_SINGLERESP *single;
1133                         int reason = -1;
1134                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1135                         single = OCSP_basic_add1_status(bs, cid,
1136                                                 V_OCSP_CERTSTATUS_REVOKED,
1137                                                 reason, revtm,
1138                                                 thisupd, nextupd);
1139                         if (invtm)
1140                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1141                         else if (inst)
1142                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1143                         ASN1_OBJECT_free(inst);
1144                         ASN1_TIME_free(revtm);
1145                         ASN1_GENERALIZEDTIME_free(invtm);
1146                         }
1147                 }
1148
1149         OCSP_copy_nonce(bs, req);
1150
1151         OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags);
1152
1153         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1154
1155         end:
1156         ASN1_TIME_free(thisupd);
1157         ASN1_TIME_free(nextupd);
1158         OCSP_CERTID_free(ca_id);
1159         OCSP_BASICRESP_free(bs);
1160         return ret;
1161
1162         }
1163
1164 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1165         {
1166         int i;
1167         BIGNUM *bn = NULL;
1168         char *itmp, *row[DB_NUMBER],**rrow;
1169         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1170         bn = ASN1_INTEGER_to_BN(ser,NULL);
1171         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1172         if (BN_is_zero(bn))
1173                 itmp = BUF_strdup("00");
1174         else
1175                 itmp = BN_bn2hex(bn);
1176         row[DB_serial] = itmp;
1177         BN_free(bn);
1178         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1179         OPENSSL_free(itmp);
1180         return rrow;
1181         }
1182
1183 /* Quick and dirty OCSP server: read in and parse input request */
1184
1185 static BIO *init_responder(char *port)
1186         {
1187         BIO *acbio = NULL, *bufbio = NULL;
1188         bufbio = BIO_new(BIO_f_buffer());
1189         if (!bufbio)
1190                 goto err;
1191 #ifndef OPENSSL_NO_SOCK
1192         acbio = BIO_new_accept(port);
1193 #else
1194         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1195 #endif
1196         if (!acbio)
1197                 goto err;
1198         BIO_set_accept_bios(acbio, bufbio);
1199         bufbio = NULL;
1200
1201         if (BIO_do_accept(acbio) <= 0)
1202                 {
1203                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1204                         ERR_print_errors(bio_err);
1205                         goto err;
1206                 }
1207
1208         return acbio;
1209
1210         err:
1211         BIO_free_all(acbio);
1212         BIO_free(bufbio);
1213         return NULL;
1214         }
1215
1216 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1217         {
1218         int have_post = 0, len;
1219         OCSP_REQUEST *req = NULL;
1220         char inbuf[1024];
1221         BIO *cbio = NULL;
1222
1223         if (BIO_do_accept(acbio) <= 0)
1224                 {
1225                         BIO_printf(bio_err, "Error accepting connection\n");
1226                         ERR_print_errors(bio_err);
1227                         return 0;
1228                 }
1229
1230         cbio = BIO_pop(acbio);
1231         *pcbio = cbio;
1232
1233         for(;;)
1234                 {
1235                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1236                 if (len <= 0)
1237                         return 1;
1238                 /* Look for "POST" signalling start of query */
1239                 if (!have_post)
1240                         {
1241                         if(strncmp(inbuf, "POST", 4))
1242                                 {
1243                                 BIO_printf(bio_err, "Invalid request\n");
1244                                 return 1;
1245                                 }
1246                         have_post = 1;
1247                         }
1248                 /* Look for end of headers */
1249                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1250                         break;
1251                 }
1252
1253         /* Try to read OCSP request */
1254
1255         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1256
1257         if (!req)
1258                 {
1259                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1260                 ERR_print_errors(bio_err);
1261                 }
1262
1263         *preq = req;
1264
1265         return 1;
1266
1267         }
1268
1269 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1270         {
1271         char http_resp[] =
1272                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1273                 "Content-Length: %d\r\n\r\n";
1274         if (!cbio)
1275                 return 0;
1276         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1277         i2d_OCSP_RESPONSE_bio(cbio, resp);
1278         (void)BIO_flush(cbio);
1279         return 1;
1280         }
1281
1282 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1283                                 STACK_OF(CONF_VALUE) *headers,
1284                                 OCSP_REQUEST *req, int req_timeout)
1285         {
1286         int fd;
1287         int rv;
1288         int i;
1289         OCSP_REQ_CTX *ctx = NULL;
1290         OCSP_RESPONSE *rsp = NULL;
1291         fd_set confds;
1292         struct timeval tv;
1293
1294         if (req_timeout != -1)
1295                 BIO_set_nbio(cbio, 1);
1296
1297         rv = BIO_do_connect(cbio);
1298
1299         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1300                 {
1301                 BIO_puts(err, "Error connecting BIO\n");
1302                 return NULL;
1303                 }
1304
1305         if (BIO_get_fd(cbio, &fd) <= 0)
1306                 {
1307                 BIO_puts(err, "Can't get connection fd\n");
1308                 goto err;
1309                 }
1310
1311         if (req_timeout != -1 && rv <= 0)
1312                 {
1313                 FD_ZERO(&confds);
1314                 openssl_fdset(fd, &confds);
1315                 tv.tv_usec = 0;
1316                 tv.tv_sec = req_timeout;
1317                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1318                 if (rv == 0)
1319                         {
1320                         BIO_puts(err, "Timeout on connect\n");
1321                         return NULL;
1322                         }
1323                 }
1324
1325
1326         ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1327         if (!ctx)
1328                 return NULL;
1329
1330         for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1331                 {
1332                 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1333                 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1334                         goto err;
1335                 }
1336
1337         if (!OCSP_REQ_CTX_set1_req(ctx, req))
1338                 goto err;
1339
1340         for (;;)
1341                 {
1342                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1343                 if (rv != -1)
1344                         break;
1345                 if (req_timeout == -1)
1346                         continue;
1347                 FD_ZERO(&confds);
1348                 openssl_fdset(fd, &confds);
1349                 tv.tv_usec = 0;
1350                 tv.tv_sec = req_timeout;
1351                 if (BIO_should_read(cbio))
1352                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1353                 else if (BIO_should_write(cbio))
1354                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1355                 else
1356                         {
1357                         BIO_puts(err, "Unexpected retry condition\n");
1358                         goto err;
1359                         }
1360                 if (rv == 0)
1361                         {
1362                         BIO_puts(err, "Timeout on request\n");
1363                         break;
1364                         }
1365                 if (rv == -1)
1366                         {
1367                         BIO_puts(err, "Select error\n");
1368                         break;
1369                         }
1370
1371                 }
1372         err:
1373         if (ctx)
1374                 OCSP_REQ_CTX_free(ctx);
1375
1376         return rsp;
1377         }
1378
1379 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1380                         char *host, char *path, char *port, int use_ssl,
1381                         STACK_OF(CONF_VALUE) *headers,
1382                         int req_timeout)
1383         {
1384         BIO *cbio = NULL;
1385         SSL_CTX *ctx = NULL;
1386         OCSP_RESPONSE *resp = NULL;
1387         cbio = BIO_new_connect(host);
1388         if (!cbio)
1389                 {
1390                 BIO_printf(err, "Error creating connect BIO\n");
1391                 goto end;
1392                 }
1393         if (port) BIO_set_conn_port(cbio, port);
1394         if (use_ssl == 1)
1395                 {
1396                 BIO *sbio;
1397 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1398                 ctx = SSL_CTX_new(SSLv23_client_method());
1399 #elif !defined(OPENSSL_NO_SSL3)
1400                 ctx = SSL_CTX_new(SSLv3_client_method());
1401 #elif !defined(OPENSSL_NO_SSL2)
1402                 ctx = SSL_CTX_new(SSLv2_client_method());
1403 #else
1404                 BIO_printf(err, "SSL is disabled\n");
1405                         goto end;
1406 #endif
1407                 if (ctx == NULL)
1408                         {
1409                         BIO_printf(err, "Error creating SSL context.\n");
1410                         goto end;
1411                         }
1412                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1413                 sbio = BIO_new_ssl(ctx, 1);
1414                 cbio = BIO_push(sbio, cbio);
1415                 }
1416         resp = query_responder(err, cbio, path, headers, req, req_timeout);
1417         if (!resp)
1418                 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1419         end:
1420         if (cbio)
1421                 BIO_free_all(cbio);
1422         if (ctx)
1423                 SSL_CTX_free(ctx);
1424         return resp;
1425         }
1426
1427 #endif