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, const EVP_MD *md,
 109                         STACK_OF(X509) *rother, unsigned long flags,
 110                         int nmin, int ndays, int badsig);
 111
 112 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
 113 static BIO *init_responder(const char *port);
 114 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, const char *port);
 115 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
 116 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
 117                                       const 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 *thost = NULL, *tport = NULL, *tpath = NULL;
 131         char *reqin = NULL, *respin = NULL;
 132         char *reqout = NULL, *respout = NULL;
 133         char *signfile = NULL, *keyfile = NULL;
 134         char *rsignfile = NULL, *rkeyfile = NULL;
 135         char *outfile = NULL;
 136         int add_nonce = 1, noverify = 0, use_ssl = -1;
 137         STACK_OF(CONF_VALUE) *headers = NULL;
 138         OCSP_REQUEST *req = NULL;
 139         OCSP_RESPONSE *resp = NULL;
 140         OCSP_BASICRESP *bs = NULL;
 141         X509 *issuer = NULL, *cert = NULL;
 142         X509 *signer = NULL, *rsigner = NULL;
 143         EVP_PKEY *key = NULL, *rkey = NULL;
 144         BIO *acbio = NULL, *cbio = NULL;
 145         BIO *derbio = NULL;
 146         BIO *out = NULL;
 147         int req_timeout = -1;
 148         int req_text = 0, resp_text = 0;
 149         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 150         char *CAfile = NULL, *CApath = NULL;
 151         X509_STORE *store = NULL;
 152         X509_VERIFY_PARAM *vpm = NULL;
 153         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 154         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 155         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 156         int ret = 1;
 157         int accept_count = -1;
 158         int badarg = 0;
 159         int badsig = 0;
 160         int i;
 161         int ignore_err = 0;
 162         STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 163         STACK_OF(OCSP_CERTID) *ids = NULL;
 164
 165         X509 *rca_cert = NULL;
 166         char *ridx_filename = NULL;
 167         char *rca_filename = NULL;
 168         CA_DB *rdb = NULL;
 169         int nmin = 0, ndays = -1;
 170         const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
 171
 172         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 173
 174         if (!load_config(bio_err, NULL))
 175                 goto end;
 176         SSL_load_error_strings();
 177         OpenSSL_add_ssl_algorithms();
 178         args = argv + 1;
 179         reqnames = sk_OPENSSL_STRING_new_null();
 180         ids = sk_OCSP_CERTID_new_null();
 181         while (!badarg && *args && *args[0] == '-')
 182                 {
 183                 if (!strcmp(*args, "-out"))
 184                         {
 185                         if (args[1])
 186                                 {
 187                                 args++;
 188                                 outfile = *args;
 189                                 }
 190                         else badarg = 1;
 191                         }
 192                 else if (!strcmp(*args, "-timeout"))
 193                         {
 194                         if (args[1])
 195                                 {
 196                                 args++;
 197                                 req_timeout = atol(*args);
 198                                 if (req_timeout < 0)
 199                                         {
 200                                         BIO_printf(bio_err,
 201                                                 "Illegal timeout value %s\n",
 202                                                 *args);
 203                                         badarg = 1;
 204                                         }
 205                                 }
 206                         else badarg = 1;
 207                         }
 208                 else if (!strcmp(*args, "-url"))
 209                         {
 210                         if (thost)
 211                                 OPENSSL_free(thost);
 212                         if (tport)
 213                                 OPENSSL_free(tport);
 214                         if (tpath)
 215                                 OPENSSL_free(tpath);
 216                         if (args[1])
 217                                 {
 218                                 args++;
 219                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 220                                         {
 221                                         BIO_printf(bio_err, "Error parsing URL\n");
 222                                         badarg = 1;
 223                                         }
 224                                 thost = host;
 225                                 tport = port;
 226                                 tpath = path;
 227                                 }
 228                         else badarg = 1;
 229                         }
 230                 else if (!strcmp(*args, "-host"))
 231                         {
 232                         if (args[1])
 233                                 {
 234                                 args++;
 235                                 host = *args;
 236                                 }
 237                         else badarg = 1;
 238                         }
 239                 else if (!strcmp(*args, "-port"))
 240                         {
 241                         if (args[1])
 242                                 {
 243                                 args++;
 244                                 port = *args;
 245                                 }
 246                         else badarg = 1;
 247                         }
 248                 else if (!strcmp(*args, "-header"))
 249                         {
 250                         if (args[1] && args[2])
 251                                 {
 252                                 if (!X509V3_add_value(args[1], args[2], &headers))
 253                                         goto end;
 254                                 args += 2;
 255                                 }
 256                         else badarg = 1;
 257                         }
 258                 else if (!strcmp(*args, "-ignore_err"))
 259                         ignore_err = 1;
 260                 else if (!strcmp(*args, "-noverify"))
 261                         noverify = 1;
 262                 else if (!strcmp(*args, "-nonce"))
 263                         add_nonce = 2;
 264                 else if (!strcmp(*args, "-no_nonce"))
 265                         add_nonce = 0;
 266                 else if (!strcmp(*args, "-resp_no_certs"))
 267                         rflags |= OCSP_NOCERTS;
 268                 else if (!strcmp(*args, "-resp_key_id"))
 269                         rflags |= OCSP_RESPID_KEY;
 270                 else if (!strcmp(*args, "-no_certs"))
 271                         sign_flags |= OCSP_NOCERTS;
 272                 else if (!strcmp(*args, "-no_signature_verify"))
 273                         verify_flags |= OCSP_NOSIGS;
 274                 else if (!strcmp(*args, "-no_cert_verify"))
 275                         verify_flags |= OCSP_NOVERIFY;
 276                 else if (!strcmp(*args, "-no_chain"))
 277                         verify_flags |= OCSP_NOCHAIN;
 278                 else if (!strcmp(*args, "-no_cert_checks"))
 279                         verify_flags |= OCSP_NOCHECKS;
 280                 else if (!strcmp(*args, "-no_explicit"))
 281                         verify_flags |= OCSP_NOEXPLICIT;
 282                 else if (!strcmp(*args, "-trust_other"))
 283                         verify_flags |= OCSP_TRUSTOTHER;
 284                 else if (!strcmp(*args, "-no_intern"))
 285                         verify_flags |= OCSP_NOINTERN;
 286                 else if (!strcmp(*args, "-badsig"))
 287                         badsig = 1;
 288                 else if (!strcmp(*args, "-text"))
 289                         {
 290                         req_text = 1;
 291                         resp_text = 1;
 292                         }
 293                 else if (!strcmp(*args, "-req_text"))
 294                         req_text = 1;
 295                 else if (!strcmp(*args, "-resp_text"))
 296                         resp_text = 1;
 297                 else if (!strcmp(*args, "-reqin"))
 298                         {
 299                         if (args[1])
 300                                 {
 301                                 args++;
 302                                 reqin = *args;
 303                                 }
 304                         else badarg = 1;
 305                         }
 306                 else if (!strcmp(*args, "-respin"))
 307                         {
 308                         if (args[1])
 309                                 {
 310                                 args++;
 311                                 respin = *args;
 312                                 }
 313                         else badarg = 1;
 314                         }
 315                 else if (!strcmp(*args, "-signer"))
 316                         {
 317                         if (args[1])
 318                                 {
 319                                 args++;
 320                                 signfile = *args;
 321                                 }
 322                         else badarg = 1;
 323                         }
 324                 else if (!strcmp (*args, "-VAfile"))
 325                         {
 326                         if (args[1])
 327                                 {
 328                                 args++;
 329                                 verify_certfile = *args;
 330                                 verify_flags |= OCSP_TRUSTOTHER;
 331                                 }
 332                         else badarg = 1;
 333                         }
 334                 else if (!strcmp(*args, "-sign_other"))
 335                         {
 336                         if (args[1])
 337                                 {
 338                                 args++;
 339                                 sign_certfile = *args;
 340                                 }
 341                         else badarg = 1;
 342                         }
 343                 else if (!strcmp(*args, "-verify_other"))
 344                         {
 345                         if (args[1])
 346                                 {
 347                                 args++;
 348                                 verify_certfile = *args;
 349                                 }
 350                         else badarg = 1;
 351                         }
 352                 else if (!strcmp (*args, "-CAfile"))
 353                         {
 354                         if (args[1])
 355                                 {
 356                                 args++;
 357                                 CAfile = *args;
 358                                 }
 359                         else badarg = 1;
 360                         }
 361                 else if (!strcmp (*args, "-CApath"))
 362                         {
 363                         if (args[1])
 364                                 {
 365                                 args++;
 366                                 CApath = *args;
 367                                 }
 368                         else badarg = 1;
 369                         }
 370                 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
 371                         {
 372                         if (badarg)
 373                                 goto end;
 374                         continue;
 375                         }
 376                 else if (!strcmp (*args, "-validity_period"))
 377                         {
 378                         if (args[1])
 379                                 {
 380                                 args++;
 381                                 nsec = atol(*args);
 382                                 if (nsec < 0)
 383                                         {
 384                                         BIO_printf(bio_err,
 385                                                 "Illegal validity period %s\n",
 386                                                 *args);
 387                                         badarg = 1;
 388                                         }
 389                                 }
 390                         else badarg = 1;
 391                         }
 392                 else if (!strcmp (*args, "-status_age"))
 393                         {
 394                         if (args[1])
 395                                 {
 396                                 args++;
 397                                 maxage = atol(*args);
 398                                 if (maxage < 0)
 399                                         {
 400                                         BIO_printf(bio_err,
 401                                                 "Illegal validity age %s\n",
 402                                                 *args);
 403                                         badarg = 1;
 404                                         }
 405                                 }
 406                         else badarg = 1;
 407                         }
 408                  else if (!strcmp(*args, "-signkey"))
 409                         {
 410                         if (args[1])
 411                                 {
 412                                 args++;
 413                                 keyfile = *args;
 414                                 }
 415                         else badarg = 1;
 416                         }
 417                 else if (!strcmp(*args, "-reqout"))
 418                         {
 419                         if (args[1])
 420                                 {
 421                                 args++;
 422                                 reqout = *args;
 423                                 }
 424                         else badarg = 1;
 425                         }
 426                 else if (!strcmp(*args, "-respout"))
 427                         {
 428                         if (args[1])
 429                                 {
 430                                 args++;
 431                                 respout = *args;
 432                                 }
 433                         else badarg = 1;
 434                         }
 435                  else if (!strcmp(*args, "-path"))
 436                         {
 437                         if (args[1])
 438                                 {
 439                                 args++;
 440                                 path = *args;
 441                                 }
 442                         else badarg = 1;
 443                         }
 444                 else if (!strcmp(*args, "-issuer"))
 445                         {
 446                         if (args[1])
 447                                 {
 448                                 args++;
 449                                 X509_free(issuer);
 450                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 451                                         NULL, e, "issuer certificate");
 452                                 if(!issuer) goto end;
 453                                 }
 454                         else badarg = 1;
 455                         }
 456                 else if (!strcmp (*args, "-cert"))
 457                         {
 458                         if (args[1])
 459                                 {
 460                                 args++;
 461                                 X509_free(cert);
 462                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 463                                         NULL, e, "certificate");
 464                                 if(!cert) goto end;
 465                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 466                                 if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 467                                         goto end;
 468                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 469                                         goto end;
 470                                 }
 471                         else badarg = 1;
 472                         }
 473                 else if (!strcmp(*args, "-serial"))
 474                         {
 475                         if (args[1])
 476                                 {
 477                                 args++;
 478                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 479                                 if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
 480                                         goto end;
 481                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 482                                         goto end;
 483                                 }
 484                         else badarg = 1;
 485                         }
 486                 else if (!strcmp(*args, "-index"))
 487                         {
 488                         if (args[1])
 489                                 {
 490                                 args++;
 491                                 ridx_filename = *args;
 492                                 }
 493                         else badarg = 1;
 494                         }
 495                 else if (!strcmp(*args, "-CA"))
 496                         {
 497                         if (args[1])
 498                                 {
 499                                 args++;
 500                                 rca_filename = *args;
 501                                 }
 502                         else badarg = 1;
 503                         }
 504                 else if (!strcmp (*args, "-nmin"))
 505                         {
 506                         if (args[1])
 507                                 {
 508                                 args++;
 509                                 nmin = atol(*args);
 510                                 if (nmin < 0)
 511                                         {
 512                                         BIO_printf(bio_err,
 513                                                 "Illegal update period %s\n",
 514                                                 *args);
 515                                         badarg = 1;
 516                                         }
 517                                 }
 518                                 if (ndays == -1)
 519                                         ndays = 0;
 520                         else badarg = 1;
 521                         }
 522                 else if (!strcmp (*args, "-nrequest"))
 523                         {
 524                         if (args[1])
 525                                 {
 526                                 args++;
 527                                 accept_count = atol(*args);
 528                                 if (accept_count < 0)
 529                                         {
 530                                         BIO_printf(bio_err,
 531                                                 "Illegal accept count %s\n",
 532                                                 *args);
 533                                         badarg = 1;
 534                                         }
 535                                 }
 536                         else badarg = 1;
 537                         }
 538                 else if (!strcmp (*args, "-ndays"))
 539                         {
 540                         if (args[1])
 541                                 {
 542                                 args++;
 543                                 ndays = atol(*args);
 544                                 if (ndays < 0)
 545                                         {
 546                                         BIO_printf(bio_err,
 547                                                 "Illegal update period %s\n",
 548                                                 *args);
 549                                         badarg = 1;
 550                                         }
 551                                 }
 552                         else badarg = 1;
 553                         }
 554                 else if (!strcmp(*args, "-rsigner"))
 555                         {
 556                         if (args[1])
 557                                 {
 558                                 args++;
 559                                 rsignfile = *args;
 560                                 }
 561                         else badarg = 1;
 562                         }
 563                 else if (!strcmp(*args, "-rkey"))
 564                         {
 565                         if (args[1])
 566                                 {
 567                                 args++;
 568                                 rkeyfile = *args;
 569                                 }
 570                         else badarg = 1;
 571                         }
 572                 else if (!strcmp(*args, "-rother"))
 573                         {
 574                         if (args[1])
 575                                 {
 576                                 args++;
 577                                 rcertfile = *args;
 578                                 }
 579                         else badarg = 1;
 580                         }
 581                 else if (!strcmp(*args, "-rmd"))
 582                         {
 583                         if (args[1])
 584                                 {
 585                                 args++;
 586                                 rsign_md = EVP_get_digestbyname(*args);
 587                                 if (!rsign_md)
 588                                         badarg = 1;
 589                                 }
 590                         else badarg = 1;
 591                         }
 592                 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
 593                         {
 594                         badarg = 1;
 595                         }
 596                 args++;
 597                 }
 598
 599         /* Have we anything to do? */
 600         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 601
 602         if (badarg)
 603                 {
 604                 BIO_printf (bio_err, "OCSP utility\n");
 605                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 606                 BIO_printf (bio_err, "where options are\n");
 607                 BIO_printf (bio_err, "-out file          output filename\n");
 608                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 609                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 610                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 611                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 612                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 613                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 614                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 615                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 616                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 617                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 618                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 619                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 620                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 621                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 622                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 623                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 624                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 625                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 626                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 627                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 628                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 629                 BIO_printf (bio_err, "-trusted_first     use locally trusted CA's first when building trust chain\n");
 630                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 631                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 632                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 633                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 634                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 635                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 636                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 637                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 638                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 639                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 640                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 641                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 642                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 643                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 644                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 645                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 646                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 647                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 648                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 649                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 650                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 651                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 652                 BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request\n");
 653                 BIO_printf (bio_err, "-timeout n timeout connection to OCSP responder after n seconds\n");
 654                 goto end;
 655                 }
 656
 657         if(outfile) out = BIO_new_file(outfile, "w");
 658         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 659
 660         if(!out)
 661                 {
 662                 BIO_printf(bio_err, "Error opening output file\n");
 663                 goto end;
 664                 }
 665
 666         if (!req && (add_nonce != 2)) add_nonce = 0;
 667
 668         if (!req && reqin)
 669                 {
 670                 if (!strcmp(reqin, "-"))
 671                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 672                 else
 673                         derbio = BIO_new_file(reqin, "rb");
 674                 if (!derbio)
 675                         {
 676                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 677                         goto end;
 678                         }
 679                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 680                 BIO_free(derbio);
 681                 if(!req)
 682                         {
 683                         BIO_printf(bio_err, "Error reading OCSP request\n");
 684                         goto end;
 685                         }
 686                 }
 687
 688         if (!req && port)
 689                 {
 690                 acbio = init_responder(port);
 691                 if (!acbio)
 692                         goto end;
 693                 }
 694
 695         if (rsignfile && !rdb)
 696                 {
 697                 if (!rkeyfile) rkeyfile = rsignfile;
 698                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 699                         NULL, e, "responder certificate");
 700                 if (!rsigner)
 701                         {
 702                         BIO_printf(bio_err, "Error loading responder certificate\n");
 703                         goto end;
 704                         }
 705                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 706                         NULL, e, "CA certificate");
 707                 if (rcertfile)
 708                         {
 709                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 710                                 NULL, e, "responder other certificates");
 711                         if (!rother) goto end;
 712                         }
 713                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 714                         "responder private key");
 715                 if (!rkey)
 716                         goto end;
 717                 }
 718         if(acbio)
 719                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 720
 721         redo_accept:
 722
 723         if (acbio)
 724                 {
 725                 if (!do_responder(&req, &cbio, acbio, port))
 726                         goto end;
 727                 if (!req)
 728                         {
 729                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 730                         send_ocsp_response(cbio, resp);
 731                         goto done_resp;
 732                         }
 733                 }
 734
 735         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 736                 {
 737                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 738                 goto end;
 739                 }
 740
 741         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 742
 743         if (signfile)
 744                 {
 745                 if (!keyfile) keyfile = signfile;
 746                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 747                         NULL, e, "signer certificate");
 748                 if (!signer)
 749                         {
 750                         BIO_printf(bio_err, "Error loading signer certificate\n");
 751                         goto end;
 752                         }
 753                 if (sign_certfile)
 754                         {
 755                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 756                                 NULL, e, "signer certificates");
 757                         if (!sign_other) goto end;
 758                         }
 759                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 760                         "signer private key");
 761                 if (!key)
 762                         goto end;
 763
 764                 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
 765                         {
 766                         BIO_printf(bio_err, "Error signing OCSP request\n");
 767                         goto end;
 768                         }
 769                 }
 770
 771         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 772
 773         if (reqout)
 774                 {
 775                 if (!strcmp(reqout, "-"))
 776                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 777                 else
 778                         derbio = BIO_new_file(reqout, "wb");
 779                 if(!derbio)
 780                         {
 781                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 782                         goto end;
 783                         }
 784                 i2d_OCSP_REQUEST_bio(derbio, req);
 785                 BIO_free(derbio);
 786                 }
 787
 788         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 789                 {
 790                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 791                 goto end;
 792                 }
 793
 794         if (ridx_filename && !rdb)
 795                 {
 796                 rdb = load_index(ridx_filename, NULL);
 797                 if (!rdb) goto end;
 798                 if (!index_index(rdb)) goto end;
 799                 }
 800
 801         if (rdb)
 802                 {
 803                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,rsign_md, rother, rflags, nmin, ndays, badsig);
 804                 if (cbio)
 805                         send_ocsp_response(cbio, resp);
 806                 }
 807         else if (host)
 808                 {
 809 #ifndef OPENSSL_NO_SOCK
 810                 resp = process_responder(bio_err, req, host, path,
 811                                         port, use_ssl, headers, req_timeout);
 812                 if (!resp)
 813                         goto end;
 814 #else
 815                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 816                 goto end;
 817 #endif
 818                 }
 819         else if (respin)
 820                 {
 821                 if (!strcmp(respin, "-"))
 822                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 823                 else
 824                         derbio = BIO_new_file(respin, "rb");
 825                 if (!derbio)
 826                         {
 827                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 828                         goto end;
 829                         }
 830                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 831                 BIO_free(derbio);
 832                 if(!resp)
 833                         {
 834                         BIO_printf(bio_err, "Error reading OCSP response\n");
 835                         goto end;
 836                         }
 837
 838                 }
 839         else
 840                 {
 841                 ret = 0;
 842                 goto end;
 843                 }
 844
 845         done_resp:
 846
 847         if (respout)
 848                 {
 849                 if (!strcmp(respout, "-"))
 850                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 851                 else
 852                         derbio = BIO_new_file(respout, "wb");
 853                 if(!derbio)
 854                         {
 855                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 856                         goto end;
 857                         }
 858                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 859                 BIO_free(derbio);
 860                 }
 861
 862         i = OCSP_response_status(resp);
 863
 864         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 865                 {
 866                 BIO_printf(out, "Responder Error: %s (%d)\n",
 867                                 OCSP_response_status_str(i), i);
 868                 if (ignore_err)
 869                         goto redo_accept;
 870                 ret = 0;
 871                 goto end;
 872                 }
 873
 874         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 875
 876         /* If running as responder don't verify our own response */
 877         if (cbio)
 878                 {
 879                 if (accept_count > 0)
 880                         accept_count--;
 881                 /* Redo if more connections needed */
 882                 if (accept_count)
 883                         {
 884                         BIO_free_all(cbio);
 885                         cbio = NULL;
 886                         OCSP_REQUEST_free(req);
 887                         req = NULL;
 888                         OCSP_RESPONSE_free(resp);
 889                         resp = NULL;
 890                         goto redo_accept;
 891                         }
 892                 ret = 0;
 893                 goto end;
 894                 }
 895         else if (ridx_filename)
 896                 {
 897                 ret = 0;
 898                 goto end;
 899                 }
 900
 901         if (!store)
 902                 store = setup_verify(bio_err, CAfile, CApath);
 903         if (!store)
 904                 goto end;
 905         if (vpm)
 906                 X509_STORE_set1_param(store, vpm);
 907         if (verify_certfile)
 908                 {
 909                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 910                         NULL, e, "validator certificate");
 911                 if (!verify_other) goto end;
 912                 }
 913
 914         bs = OCSP_response_get1_basic(resp);
 915
 916         if (!bs)
 917                 {
 918                 BIO_printf(bio_err, "Error parsing response\n");
 919                 goto end;
 920                 }
 921
 922         ret = 0;
 923
 924         if (!noverify)
 925                 {
 926                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 927                         {
 928                         if (i == -1)
 929                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 930                         else
 931                                 {
 932                                 BIO_printf(bio_err, "Nonce Verify error\n");
 933                                 ret = 1;
 934                                 goto end;
 935                                 }
 936                         }
 937
 938                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 939                 if(i <= 0)
 940                         {
 941                         BIO_printf(bio_err, "Response Verify Failure\n");
 942                         ERR_print_errors(bio_err);
 943                         ret = 1;
 944                         }
 945                 else
 946                         BIO_printf(bio_err, "Response verify OK\n");
 947
 948                 }
 949
 950         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 951                 ret = 1;
 952
 953 end:
 954         ERR_print_errors(bio_err);
 955         X509_free(signer);
 956         X509_STORE_free(store);
 957         if (vpm)
 958                 X509_VERIFY_PARAM_free(vpm);
 959         EVP_PKEY_free(key);
 960         EVP_PKEY_free(rkey);
 961         X509_free(issuer);
 962         X509_free(cert);
 963         X509_free(rsigner);
 964         X509_free(rca_cert);
 965         free_index(rdb);
 966         BIO_free_all(cbio);
 967         BIO_free_all(acbio);
 968         BIO_free(out);
 969         OCSP_REQUEST_free(req);
 970         OCSP_RESPONSE_free(resp);
 971         OCSP_BASICRESP_free(bs);
 972         sk_OPENSSL_STRING_free(reqnames);
 973         sk_OCSP_CERTID_free(ids);
 974         sk_X509_pop_free(sign_other, X509_free);
 975         sk_X509_pop_free(verify_other, X509_free);
 976         sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 977
 978         if (thost)
 979                 OPENSSL_free(thost);
 980         if (tport)
 981                 OPENSSL_free(tport);
 982         if (tpath)
 983                 OPENSSL_free(tpath);
 984
 985         OPENSSL_EXIT(ret);
 986 }
 987
 988 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
 989                                 STACK_OF(OCSP_CERTID) *ids)
 990         {
 991         OCSP_CERTID *id;
 992         if(!issuer)
 993                 {
 994                 BIO_printf(bio_err, "No issuer certificate specified\n");
 995                 return 0;
 996                 }
 997         if(!*req) *req = OCSP_REQUEST_new();
 998         if(!*req) goto err;
 999         id = OCSP_cert_to_id(cert_id_md, cert, issuer);
1000         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1001         if(!OCSP_request_add0_id(*req, id)) goto err;
1002         return 1;
1003
1004         err:
1005         BIO_printf(bio_err, "Error Creating OCSP request\n");
1006         return 0;
1007         }
1008
1009 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
1010                                 STACK_OF(OCSP_CERTID) *ids)
1011         {
1012         OCSP_CERTID *id;
1013         X509_NAME *iname;
1014         ASN1_BIT_STRING *ikey;
1015         ASN1_INTEGER *sno;
1016         if(!issuer)
1017                 {
1018                 BIO_printf(bio_err, "No issuer certificate specified\n");
1019                 return 0;
1020                 }
1021         if(!*req) *req = OCSP_REQUEST_new();
1022         if(!*req) goto err;
1023         iname = X509_get_subject_name(issuer);
1024         ikey = X509_get0_pubkey_bitstr(issuer);
1025         sno = s2i_ASN1_INTEGER(NULL, serial);
1026         if(!sno)
1027                 {
1028                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1029                 return 0;
1030                 }
1031         id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1032         ASN1_INTEGER_free(sno);
1033         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1034         if(!OCSP_request_add0_id(*req, id)) goto err;
1035         return 1;
1036
1037         err:
1038         BIO_printf(bio_err, "Error Creating OCSP request\n");
1039         return 0;
1040         }
1041
1042 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1043                               STACK_OF(OPENSSL_STRING) *names,
1044                               STACK_OF(OCSP_CERTID) *ids, long nsec,
1045                               long maxage)
1046         {
1047         OCSP_CERTID *id;
1048         char *name;
1049         int i;
1050
1051         int status, reason;
1052
1053         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1054
1055         if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1056                 return 1;
1057
1058         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1059                 {
1060                 id = sk_OCSP_CERTID_value(ids, i);
1061                 name = sk_OPENSSL_STRING_value(names, i);
1062                 BIO_printf(out, "%s: ", name);
1063
1064                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1065                                         &rev, &thisupd, &nextupd))
1066                         {
1067                         BIO_puts(out, "ERROR: No Status found.\n");
1068                         continue;
1069                         }
1070
1071                 /* Check validity: if invalid write to output BIO so we
1072                  * know which response this refers to.
1073                  */
1074                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1075                         {
1076                         BIO_puts(out, "WARNING: Status times invalid.\n");
1077                         ERR_print_errors(out);
1078                         }
1079                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1080
1081                 BIO_puts(out, "\tThis Update: ");
1082                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1083                 BIO_puts(out, "\n");
1084
1085                 if(nextupd)
1086                         {
1087                         BIO_puts(out, "\tNext Update: ");
1088                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1089                         BIO_puts(out, "\n");
1090                         }
1091
1092                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1093                         continue;
1094
1095                 if (reason != -1)
1096                         BIO_printf(out, "\tReason: %s\n",
1097                                 OCSP_crl_reason_str(reason));
1098
1099                 BIO_puts(out, "\tRevocation Time: ");
1100                 ASN1_GENERALIZEDTIME_print(out, rev);
1101                 BIO_puts(out, "\n");
1102                 }
1103
1104         return 1;
1105         }
1106
1107
1108 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1109                         X509 *ca, X509 *rcert,
1110                         EVP_PKEY *rkey, const EVP_MD *rmd,
1111                         STACK_OF(X509) *rother, unsigned long flags,
1112                         int nmin, int ndays, int badsig)
1113         {
1114         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1115         OCSP_CERTID *cid, *ca_id = NULL;
1116         OCSP_BASICRESP *bs = NULL;
1117         int i, id_count, ret = 1;
1118
1119         id_count = OCSP_request_onereq_count(req);
1120
1121         if (id_count <= 0)
1122                 {
1123                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1124                 goto end;
1125                 }
1126
1127
1128         bs = OCSP_BASICRESP_new();
1129         thisupd = X509_gmtime_adj(NULL, 0);
1130         if (ndays != -1)
1131                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1132
1133         /* Examine each certificate id in the request */
1134         for (i = 0; i < id_count; i++)
1135                 {
1136                 OCSP_ONEREQ *one;
1137                 ASN1_INTEGER *serial;
1138                 char **inf;
1139                 ASN1_OBJECT *cert_id_md_oid;
1140                 const EVP_MD *cert_id_md;
1141                 one = OCSP_request_onereq_get0(req, i);
1142                 cid = OCSP_onereq_get0_id(one);
1143
1144                 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1145
1146                 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1147                 if (! cert_id_md)
1148                         {
1149                         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1150                                 NULL);
1151                                 goto end;
1152                         }
1153                 if (ca_id) OCSP_CERTID_free(ca_id);
1154                 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1155
1156                 /* Is this request about our CA? */
1157                 if (OCSP_id_issuer_cmp(ca_id, cid))
1158                         {
1159                         OCSP_basic_add1_status(bs, cid,
1160                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1161                                                 0, NULL,
1162                                                 thisupd, nextupd);
1163                         continue;
1164                         }
1165                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1166                 inf = lookup_serial(db, serial);
1167                 if (!inf)
1168                         OCSP_basic_add1_status(bs, cid,
1169                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1170                                                 0, NULL,
1171                                                 thisupd, nextupd);
1172                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1173                         OCSP_basic_add1_status(bs, cid,
1174                                                 V_OCSP_CERTSTATUS_GOOD,
1175                                                 0, NULL,
1176                                                 thisupd, nextupd);
1177                 else if (inf[DB_type][0] == DB_TYPE_REV)
1178                         {
1179                         ASN1_OBJECT *inst = NULL;
1180                         ASN1_TIME *revtm = NULL;
1181                         ASN1_GENERALIZEDTIME *invtm = NULL;
1182                         OCSP_SINGLERESP *single;
1183                         int reason = -1;
1184                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1185                         single = OCSP_basic_add1_status(bs, cid,
1186                                                 V_OCSP_CERTSTATUS_REVOKED,
1187                                                 reason, revtm,
1188                                                 thisupd, nextupd);
1189                         if (invtm)
1190                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1191                         else if (inst)
1192                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1193                         ASN1_OBJECT_free(inst);
1194                         ASN1_TIME_free(revtm);
1195                         ASN1_GENERALIZEDTIME_free(invtm);
1196                         }
1197                 }
1198
1199         OCSP_copy_nonce(bs, req);
1200
1201         OCSP_basic_sign(bs, rcert, rkey, rmd, rother, flags);
1202
1203         if (badsig)
1204                 bs->signature->data[bs->signature->length -1] ^= 0x1;
1205
1206         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1207
1208         end:
1209         ASN1_TIME_free(thisupd);
1210         ASN1_TIME_free(nextupd);
1211         OCSP_CERTID_free(ca_id);
1212         OCSP_BASICRESP_free(bs);
1213         return ret;
1214
1215         }
1216
1217 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1218         {
1219         int i;
1220         BIGNUM *bn = NULL;
1221         char *itmp, *row[DB_NUMBER],**rrow;
1222         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1223         bn = ASN1_INTEGER_to_BN(ser,NULL);
1224         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1225         if (BN_is_zero(bn))
1226                 itmp = BUF_strdup("00");
1227         else
1228                 itmp = BN_bn2hex(bn);
1229         row[DB_serial] = itmp;
1230         BN_free(bn);
1231         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1232         OPENSSL_free(itmp);
1233         return rrow;
1234         }
1235
1236 /* Quick and dirty OCSP server: read in and parse input request */
1237
1238 static BIO *init_responder(const char *port)
1239         {
1240         BIO *acbio = NULL, *bufbio = NULL;
1241         bufbio = BIO_new(BIO_f_buffer());
1242         if (!bufbio)
1243                 goto err;
1244 #ifndef OPENSSL_NO_SOCK
1245         acbio = BIO_new_accept(port);
1246 #else
1247         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1248 #endif
1249         if (!acbio)
1250                 goto err;
1251         BIO_set_accept_bios(acbio, bufbio);
1252         bufbio = NULL;
1253
1254         if (BIO_do_accept(acbio) <= 0)
1255                 {
1256                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1257                         ERR_print_errors(bio_err);
1258                         goto err;
1259                 }
1260
1261         return acbio;
1262
1263         err:
1264         BIO_free_all(acbio);
1265         BIO_free(bufbio);
1266         return NULL;
1267         }
1268
1269 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1270                         const char *port)
1271         {
1272         int have_post = 0, len;
1273         OCSP_REQUEST *req = NULL;
1274         char inbuf[1024];
1275         BIO *cbio = NULL;
1276
1277         if (BIO_do_accept(acbio) <= 0)
1278                 {
1279                         BIO_printf(bio_err, "Error accepting connection\n");
1280                         ERR_print_errors(bio_err);
1281                         return 0;
1282                 }
1283
1284         cbio = BIO_pop(acbio);
1285         *pcbio = cbio;
1286
1287         for(;;)
1288                 {
1289                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1290                 if (len <= 0)
1291                         return 1;
1292                 /* Look for "POST" signalling start of query */
1293                 if (!have_post)
1294                         {
1295                         if(strncmp(inbuf, "POST", 4))
1296                                 {
1297                                 BIO_printf(bio_err, "Invalid request\n");
1298                                 return 1;
1299                                 }
1300                         have_post = 1;
1301                         }
1302                 /* Look for end of headers */
1303                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1304                         break;
1305                 }
1306
1307         /* Try to read OCSP request */
1308
1309         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1310
1311         if (!req)
1312                 {
1313                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1314                 ERR_print_errors(bio_err);
1315                 }
1316
1317         *preq = req;
1318
1319         return 1;
1320
1321         }
1322
1323 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1324         {
1325         char http_resp[] =
1326                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1327                 "Content-Length: %d\r\n\r\n";
1328         if (!cbio)
1329                 return 0;
1330         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1331         i2d_OCSP_RESPONSE_bio(cbio, resp);
1332         (void)BIO_flush(cbio);
1333         return 1;
1334         }
1335
1336 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
1337                                       const STACK_OF(CONF_VALUE) *headers,
1338                                       OCSP_REQUEST *req, int req_timeout)
1339         {
1340         int fd;
1341         int rv;
1342         int i;
1343         OCSP_REQ_CTX *ctx = NULL;
1344         OCSP_RESPONSE *rsp = NULL;
1345         fd_set confds;
1346         struct timeval tv;
1347
1348         if (req_timeout != -1)
1349                 BIO_set_nbio(cbio, 1);
1350
1351         rv = BIO_do_connect(cbio);
1352
1353         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1354                 {
1355                 BIO_puts(err, "Error connecting BIO\n");
1356                 return NULL;
1357                 }
1358
1359         if (BIO_get_fd(cbio, &fd) <= 0)
1360                 {
1361                 BIO_puts(err, "Can't get connection fd\n");
1362                 goto err;
1363                 }
1364
1365         if (req_timeout != -1 && rv <= 0)
1366                 {
1367                 FD_ZERO(&confds);
1368                 openssl_fdset(fd, &confds);
1369                 tv.tv_usec = 0;
1370                 tv.tv_sec = req_timeout;
1371                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1372                 if (rv == 0)
1373                         {
1374                         BIO_puts(err, "Timeout on connect\n");
1375                         return NULL;
1376                         }
1377                 }
1378
1379
1380         ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1381         if (!ctx)
1382                 return NULL;
1383
1384         for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1385                 {
1386                 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1387                 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1388                         goto err;
1389                 }
1390
1391         if (!OCSP_REQ_CTX_set1_req(ctx, req))
1392                 goto err;
1393
1394         for (;;)
1395                 {
1396                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1397                 if (rv != -1)
1398                         break;
1399                 if (req_timeout == -1)
1400                         continue;
1401                 FD_ZERO(&confds);
1402                 openssl_fdset(fd, &confds);
1403                 tv.tv_usec = 0;
1404                 tv.tv_sec = req_timeout;
1405                 if (BIO_should_read(cbio))
1406                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1407                 else if (BIO_should_write(cbio))
1408                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1409                 else
1410                         {
1411                         BIO_puts(err, "Unexpected retry condition\n");
1412                         goto err;
1413                         }
1414                 if (rv == 0)
1415                         {
1416                         BIO_puts(err, "Timeout on request\n");
1417                         break;
1418                         }
1419                 if (rv == -1)
1420                         {
1421                         BIO_puts(err, "Select error\n");
1422                         break;
1423                         }
1424
1425                 }
1426         err:
1427         if (ctx)
1428                 OCSP_REQ_CTX_free(ctx);
1429
1430         return rsp;
1431         }
1432
1433 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1434                                  const char *host, const char *path,
1435                                  const char *port, int use_ssl,
1436                                  const STACK_OF(CONF_VALUE) *headers,
1437                                  int req_timeout)
1438         {
1439         BIO *cbio = NULL;
1440         SSL_CTX *ctx = NULL;
1441         OCSP_RESPONSE *resp = NULL;
1442         cbio = BIO_new_connect(host);
1443         if (!cbio)
1444                 {
1445                 BIO_printf(err, "Error creating connect BIO\n");
1446                 goto end;
1447                 }
1448         if (port) BIO_set_conn_port(cbio, port);
1449         if (use_ssl == 1)
1450                 {
1451                 BIO *sbio;
1452 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1453                 ctx = SSL_CTX_new(SSLv23_client_method());
1454 #elif !defined(OPENSSL_NO_SSL3)
1455                 ctx = SSL_CTX_new(SSLv3_client_method());
1456 #elif !defined(OPENSSL_NO_SSL2)
1457                 ctx = SSL_CTX_new(SSLv2_client_method());
1458 #else
1459                 BIO_printf(err, "SSL is disabled\n");
1460                         goto end;
1461 #endif
1462                 if (ctx == NULL)
1463                         {
1464                         BIO_printf(err, "Error creating SSL context.\n");
1465                         goto end;
1466                         }
1467                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1468                 sbio = BIO_new_ssl(ctx, 1);
1469                 cbio = BIO_push(sbio, cbio);
1470                 }
1471         resp = query_responder(err, cbio, path, headers, req, req_timeout);
1472         if (!resp)
1473                 BIO_printf(bio_err, "Error querying OCSP responder\n");
1474         end:
1475         if (cbio)
1476                 BIO_free_all(cbio);
1477         if (ctx)
1478                 SSL_CTX_free(ctx);
1479         return resp;
1480         }
1481
1482 #endif