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