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 *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, *rsign_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         X509V3_EXT_add_rfc6962();
 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 (args[1])
 211                                 {
 212                                 args++;
 213                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 214                                         {
 215                                         BIO_printf(bio_err, "Error parsing URL\n");
 216                                         badarg = 1;
 217                                         }
 218                                 }
 219                         else badarg = 1;
 220                         }
 221                 else if (!strcmp(*args, "-host"))
 222                         {
 223                         if (args[1])
 224                                 {
 225                                 args++;
 226                                 host = *args;
 227                                 }
 228                         else badarg = 1;
 229                         }
 230                 else if (!strcmp(*args, "-port"))
 231                         {
 232                         if (args[1])
 233                                 {
 234                                 args++;
 235                                 port = *args;
 236                                 }
 237                         else badarg = 1;
 238                         }
 239                 else if (!strcmp(*args, "-header"))
 240                         {
 241                         if (args[1] && args[2])
 242                                 {
 243                                 if (!X509V3_add_value(args[1], args[2], &headers))
 244                                         goto end;
 245                                 args += 2;
 246                                 }
 247                         else badarg = 1;
 248                         }
 249                 else if (!strcmp(*args, "-ignore_err"))
 250                         ignore_err = 1;
 251                 else if (!strcmp(*args, "-noverify"))
 252                         noverify = 1;
 253                 else if (!strcmp(*args, "-nonce"))
 254                         add_nonce = 2;
 255                 else if (!strcmp(*args, "-no_nonce"))
 256                         add_nonce = 0;
 257                 else if (!strcmp(*args, "-resp_no_certs"))
 258                         rflags |= OCSP_NOCERTS;
 259                 else if (!strcmp(*args, "-resp_key_id"))
 260                         rflags |= OCSP_RESPID_KEY;
 261                 else if (!strcmp(*args, "-no_certs"))
 262                         sign_flags |= OCSP_NOCERTS;
 263                 else if (!strcmp(*args, "-no_signature_verify"))
 264                         verify_flags |= OCSP_NOSIGS;
 265                 else if (!strcmp(*args, "-no_cert_verify"))
 266                         verify_flags |= OCSP_NOVERIFY;
 267                 else if (!strcmp(*args, "-no_chain"))
 268                         verify_flags |= OCSP_NOCHAIN;
 269                 else if (!strcmp(*args, "-no_cert_checks"))
 270                         verify_flags |= OCSP_NOCHECKS;
 271                 else if (!strcmp(*args, "-no_explicit"))
 272                         verify_flags |= OCSP_NOEXPLICIT;
 273                 else if (!strcmp(*args, "-trust_other"))
 274                         verify_flags |= OCSP_TRUSTOTHER;
 275                 else if (!strcmp(*args, "-no_intern"))
 276                         verify_flags |= OCSP_NOINTERN;
 277                 else if (!strcmp(*args, "-badsig"))
 278                         badsig = 1;
 279                 else if (!strcmp(*args, "-text"))
 280                         {
 281                         req_text = 1;
 282                         resp_text = 1;
 283                         }
 284                 else if (!strcmp(*args, "-req_text"))
 285                         req_text = 1;
 286                 else if (!strcmp(*args, "-resp_text"))
 287                         resp_text = 1;
 288                 else if (!strcmp(*args, "-reqin"))
 289                         {
 290                         if (args[1])
 291                                 {
 292                                 args++;
 293                                 reqin = *args;
 294                                 }
 295                         else badarg = 1;
 296                         }
 297                 else if (!strcmp(*args, "-respin"))
 298                         {
 299                         if (args[1])
 300                                 {
 301                                 args++;
 302                                 respin = *args;
 303                                 }
 304                         else badarg = 1;
 305                         }
 306                 else if (!strcmp(*args, "-signer"))
 307                         {
 308                         if (args[1])
 309                                 {
 310                                 args++;
 311                                 signfile = *args;
 312                                 }
 313                         else badarg = 1;
 314                         }
 315                 else if (!strcmp (*args, "-VAfile"))
 316                         {
 317                         if (args[1])
 318                                 {
 319                                 args++;
 320                                 verify_certfile = *args;
 321                                 verify_flags |= OCSP_TRUSTOTHER;
 322                                 }
 323                         else badarg = 1;
 324                         }
 325                 else if (!strcmp(*args, "-sign_other"))
 326                         {
 327                         if (args[1])
 328                                 {
 329                                 args++;
 330                                 sign_certfile = *args;
 331                                 }
 332                         else badarg = 1;
 333                         }
 334                 else if (!strcmp(*args, "-verify_other"))
 335                         {
 336                         if (args[1])
 337                                 {
 338                                 args++;
 339                                 verify_certfile = *args;
 340                                 }
 341                         else badarg = 1;
 342                         }
 343                 else if (!strcmp (*args, "-CAfile"))
 344                         {
 345                         if (args[1])
 346                                 {
 347                                 args++;
 348                                 CAfile = *args;
 349                                 }
 350                         else badarg = 1;
 351                         }
 352                 else if (!strcmp (*args, "-CApath"))
 353                         {
 354                         if (args[1])
 355                                 {
 356                                 args++;
 357                                 CApath = *args;
 358                                 }
 359                         else badarg = 1;
 360                         }
 361                 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
 362                         {
 363                         if (badarg)
 364                                 goto end;
 365                         continue;
 366                         }
 367                 else if (!strcmp (*args, "-validity_period"))
 368                         {
 369                         if (args[1])
 370                                 {
 371                                 args++;
 372                                 nsec = atol(*args);
 373                                 if (nsec < 0)
 374                                         {
 375                                         BIO_printf(bio_err,
 376                                                 "Illegal validity period %s\n",
 377                                                 *args);
 378                                         badarg = 1;
 379                                         }
 380                                 }
 381                         else badarg = 1;
 382                         }
 383                 else if (!strcmp (*args, "-status_age"))
 384                         {
 385                         if (args[1])
 386                                 {
 387                                 args++;
 388                                 maxage = atol(*args);
 389                                 if (maxage < 0)
 390                                         {
 391                                         BIO_printf(bio_err,
 392                                                 "Illegal validity age %s\n",
 393                                                 *args);
 394                                         badarg = 1;
 395                                         }
 396                                 }
 397                         else badarg = 1;
 398                         }
 399                  else if (!strcmp(*args, "-signkey"))
 400                         {
 401                         if (args[1])
 402                                 {
 403                                 args++;
 404                                 keyfile = *args;
 405                                 }
 406                         else badarg = 1;
 407                         }
 408                 else if (!strcmp(*args, "-reqout"))
 409                         {
 410                         if (args[1])
 411                                 {
 412                                 args++;
 413                                 reqout = *args;
 414                                 }
 415                         else badarg = 1;
 416                         }
 417                 else if (!strcmp(*args, "-respout"))
 418                         {
 419                         if (args[1])
 420                                 {
 421                                 args++;
 422                                 respout = *args;
 423                                 }
 424                         else badarg = 1;
 425                         }
 426                  else if (!strcmp(*args, "-path"))
 427                         {
 428                         if (args[1])
 429                                 {
 430                                 args++;
 431                                 path = *args;
 432                                 }
 433                         else badarg = 1;
 434                         }
 435                 else if (!strcmp(*args, "-issuer"))
 436                         {
 437                         if (args[1])
 438                                 {
 439                                 args++;
 440                                 X509_free(issuer);
 441                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 442                                         NULL, e, "issuer certificate");
 443                                 if(!issuer) goto end;
 444                                 }
 445                         else badarg = 1;
 446                         }
 447                 else if (!strcmp (*args, "-cert"))
 448                         {
 449                         if (args[1])
 450                                 {
 451                                 args++;
 452                                 X509_free(cert);
 453                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 454                                         NULL, e, "certificate");
 455                                 if(!cert) goto end;
 456                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 457                                 if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 458                                         goto end;
 459                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 460                                         goto end;
 461                                 }
 462                         else badarg = 1;
 463                         }
 464                 else if (!strcmp(*args, "-serial"))
 465                         {
 466                         if (args[1])
 467                                 {
 468                                 args++;
 469                                 if (!cert_id_md) cert_id_md = EVP_sha1();
 470                                 if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
 471                                         goto end;
 472                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
 473                                         goto end;
 474                                 }
 475                         else badarg = 1;
 476                         }
 477                 else if (!strcmp(*args, "-index"))
 478                         {
 479                         if (args[1])
 480                                 {
 481                                 args++;
 482                                 ridx_filename = *args;
 483                                 }
 484                         else badarg = 1;
 485                         }
 486                 else if (!strcmp(*args, "-CA"))
 487                         {
 488                         if (args[1])
 489                                 {
 490                                 args++;
 491                                 rca_filename = *args;
 492                                 }
 493                         else badarg = 1;
 494                         }
 495                 else if (!strcmp (*args, "-nmin"))
 496                         {
 497                         if (args[1])
 498                                 {
 499                                 args++;
 500                                 nmin = atol(*args);
 501                                 if (nmin < 0)
 502                                         {
 503                                         BIO_printf(bio_err,
 504                                                 "Illegal update period %s\n",
 505                                                 *args);
 506                                         badarg = 1;
 507                                         }
 508                                 }
 509                                 if (ndays == -1)
 510                                         ndays = 0;
 511                         else badarg = 1;
 512                         }
 513                 else if (!strcmp (*args, "-nrequest"))
 514                         {
 515                         if (args[1])
 516                                 {
 517                                 args++;
 518                                 accept_count = atol(*args);
 519                                 if (accept_count < 0)
 520                                         {
 521                                         BIO_printf(bio_err,
 522                                                 "Illegal accept count %s\n",
 523                                                 *args);
 524                                         badarg = 1;
 525                                         }
 526                                 }
 527                         else badarg = 1;
 528                         }
 529                 else if (!strcmp (*args, "-ndays"))
 530                         {
 531                         if (args[1])
 532                                 {
 533                                 args++;
 534                                 ndays = atol(*args);
 535                                 if (ndays < 0)
 536                                         {
 537                                         BIO_printf(bio_err,
 538                                                 "Illegal update period %s\n",
 539                                                 *args);
 540                                         badarg = 1;
 541                                         }
 542                                 }
 543                         else badarg = 1;
 544                         }
 545                 else if (!strcmp(*args, "-rsigner"))
 546                         {
 547                         if (args[1])
 548                                 {
 549                                 args++;
 550                                 rsignfile = *args;
 551                                 }
 552                         else badarg = 1;
 553                         }
 554                 else if (!strcmp(*args, "-rkey"))
 555                         {
 556                         if (args[1])
 557                                 {
 558                                 args++;
 559                                 rkeyfile = *args;
 560                                 }
 561                         else badarg = 1;
 562                         }
 563                 else if (!strcmp(*args, "-rother"))
 564                         {
 565                         if (args[1])
 566                                 {
 567                                 args++;
 568                                 rcertfile = *args;
 569                                 }
 570                         else badarg = 1;
 571                         }
 572                 else if (!strcmp(*args, "-rmd"))
 573                         {
 574                         if (args[1])
 575                                 {
 576                                 args++;
 577                                 rsign_md = EVP_get_digestbyname(*args);
 578                                 if (!rsign_md)
 579                                         badarg = 1;
 580                                 }
 581                         else badarg = 1;
 582                         }
 583                 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
 584                         {
 585                         badarg = 1;
 586                         }
 587                 args++;
 588                 }
 589
 590         /* Have we anything to do? */
 591         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 592
 593         if (badarg)
 594                 {
 595                 BIO_printf (bio_err, "OCSP utility\n");
 596                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 597                 BIO_printf (bio_err, "where options are\n");
 598                 BIO_printf (bio_err, "-out file          output filename\n");
 599                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 600                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 601                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 602                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 603                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 604                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 605                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 606                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 607                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 608                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 609                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 610                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 611                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 612                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 613                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 614                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 615                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 616                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 617                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 618                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 619                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 620                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 621                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 622                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 623                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 624                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 625                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 626                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 627                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 628                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 629                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 630                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 631                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 632                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 633                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 634                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 635                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 636                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 637                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 638                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 639                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 640                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 641                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 642                 BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request\n");
 643                 goto end;
 644                 }
 645
 646         if(outfile) out = BIO_new_file(outfile, "w");
 647         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 648
 649         if(!out)
 650                 {
 651                 BIO_printf(bio_err, "Error opening output file\n");
 652                 goto end;
 653                 }
 654
 655         if (!req && (add_nonce != 2)) add_nonce = 0;
 656
 657         if (!req && reqin)
 658                 {
 659                 if (!strcmp(reqin, "-"))
 660                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 661                 else
 662                         derbio = BIO_new_file(reqin, "rb");
 663                 if (!derbio)
 664                         {
 665                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 666                         goto end;
 667                         }
 668                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 669                 BIO_free(derbio);
 670                 if(!req)
 671                         {
 672                         BIO_printf(bio_err, "Error reading OCSP request\n");
 673                         goto end;
 674                         }
 675                 }
 676
 677         if (!req && port)
 678                 {
 679                 acbio = init_responder(port);
 680                 if (!acbio)
 681                         goto end;
 682                 }
 683
 684         if (rsignfile && !rdb)
 685                 {
 686                 if (!rkeyfile) rkeyfile = rsignfile;
 687                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 688                         NULL, e, "responder certificate");
 689                 if (!rsigner)
 690                         {
 691                         BIO_printf(bio_err, "Error loading responder certificate\n");
 692                         goto end;
 693                         }
 694                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 695                         NULL, e, "CA certificate");
 696                 if (rcertfile)
 697                         {
 698                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 699                                 NULL, e, "responder other certificates");
 700                         if (!rother) goto end;
 701                         }
 702                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 703                         "responder private key");
 704                 if (!rkey)
 705                         goto end;
 706                 }
 707         if(acbio)
 708                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 709
 710         redo_accept:
 711
 712         if (acbio)
 713                 {
 714                 if (!do_responder(&req, &cbio, acbio, port))
 715                         goto end;
 716                 if (!req)
 717                         {
 718                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 719                         send_ocsp_response(cbio, resp);
 720                         goto done_resp;
 721                         }
 722                 }
 723
 724         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 725                 {
 726                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 727                 goto end;
 728                 }
 729
 730         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 731
 732         if (signfile)
 733                 {
 734                 if (!keyfile) keyfile = signfile;
 735                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 736                         NULL, e, "signer certificate");
 737                 if (!signer)
 738                         {
 739                         BIO_printf(bio_err, "Error loading signer certificate\n");
 740                         goto end;
 741                         }
 742                 if (sign_certfile)
 743                         {
 744                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 745                                 NULL, e, "signer certificates");
 746                         if (!sign_other) goto end;
 747                         }
 748                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 749                         "signer private key");
 750                 if (!key)
 751                         goto end;
 752
 753                 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
 754                         {
 755                         BIO_printf(bio_err, "Error signing OCSP request\n");
 756                         goto end;
 757                         }
 758                 }
 759
 760         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 761
 762         if (reqout)
 763                 {
 764                 if (!strcmp(reqout, "-"))
 765                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 766                 else
 767                         derbio = BIO_new_file(reqout, "wb");
 768                 if(!derbio)
 769                         {
 770                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 771                         goto end;
 772                         }
 773                 i2d_OCSP_REQUEST_bio(derbio, req);
 774                 BIO_free(derbio);
 775                 }
 776
 777         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 778                 {
 779                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 780                 goto end;
 781                 }
 782
 783         if (ridx_filename && !rdb)
 784                 {
 785                 rdb = load_index(ridx_filename, NULL);
 786                 if (!rdb) goto end;
 787                 if (!index_index(rdb)) goto end;
 788                 }
 789
 790         if (rdb)
 791                 {
 792                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,rsign_md, rother, rflags, nmin, ndays, badsig);
 793                 if (cbio)
 794                         send_ocsp_response(cbio, resp);
 795                 }
 796         else if (host)
 797                 {
 798 #ifndef OPENSSL_NO_SOCK
 799                 resp = process_responder(bio_err, req, host, path,
 800                                         port, use_ssl, headers, req_timeout);
 801                 if (!resp)
 802                         goto end;
 803 #else
 804                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 805                 goto end;
 806 #endif
 807                 }
 808         else if (respin)
 809                 {
 810                 if (!strcmp(respin, "-"))
 811                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 812                 else
 813                         derbio = BIO_new_file(respin, "rb");
 814                 if (!derbio)
 815                         {
 816                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 817                         goto end;
 818                         }
 819                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 820                 BIO_free(derbio);
 821                 if(!resp)
 822                         {
 823                         BIO_printf(bio_err, "Error reading OCSP response\n");
 824                         goto end;
 825                         }
 826
 827                 }
 828         else
 829                 {
 830                 ret = 0;
 831                 goto end;
 832                 }
 833
 834         done_resp:
 835
 836         if (respout)
 837                 {
 838                 if (!strcmp(respout, "-"))
 839                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 840                 else
 841                         derbio = BIO_new_file(respout, "wb");
 842                 if(!derbio)
 843                         {
 844                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 845                         goto end;
 846                         }
 847                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 848                 BIO_free(derbio);
 849                 }
 850
 851         i = OCSP_response_status(resp);
 852
 853         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 854                 {
 855                 BIO_printf(out, "Responder Error: %s (%d)\n",
 856                                 OCSP_response_status_str(i), i);
 857                 if (ignore_err)
 858                         goto redo_accept;
 859                 ret = 0;
 860                 goto end;
 861                 }
 862
 863         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 864
 865         /* If running as responder don't verify our own response */
 866         if (cbio)
 867                 {
 868                 if (accept_count > 0)
 869                         accept_count--;
 870                 /* Redo if more connections needed */
 871                 if (accept_count)
 872                         {
 873                         BIO_free_all(cbio);
 874                         cbio = NULL;
 875                         OCSP_REQUEST_free(req);
 876                         req = NULL;
 877                         OCSP_RESPONSE_free(resp);
 878                         resp = NULL;
 879                         goto redo_accept;
 880                         }
 881                 ret = 0;
 882                 goto end;
 883                 }
 884         else if (ridx_filename)
 885                 {
 886                 ret = 0;
 887                 goto end;
 888                 }
 889
 890         if (!store)
 891                 store = setup_verify(bio_err, CAfile, CApath);
 892         if (!store)
 893                 goto end;
 894         if (vpm)
 895                 X509_STORE_set1_param(store, vpm);
 896         if (verify_certfile)
 897                 {
 898                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 899                         NULL, e, "validator certificate");
 900                 if (!verify_other) goto end;
 901                 }
 902
 903         bs = OCSP_response_get1_basic(resp);
 904
 905         if (!bs)
 906                 {
 907                 BIO_printf(bio_err, "Error parsing response\n");
 908                 goto end;
 909                 }
 910
 911         ret = 0;
 912
 913         if (!noverify)
 914                 {
 915                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 916                         {
 917                         if (i == -1)
 918                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 919                         else
 920                                 {
 921                                 BIO_printf(bio_err, "Nonce Verify error\n");
 922                                 ret = 1;
 923                                 goto end;
 924                                 }
 925                         }
 926
 927                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 928                 if(i <= 0)
 929                         {
 930                         BIO_printf(bio_err, "Response Verify Failure\n");
 931                         ERR_print_errors(bio_err);
 932                         ret = 1;
 933                         }
 934                 else
 935                         BIO_printf(bio_err, "Response verify OK\n");
 936
 937                 }
 938
 939         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 940                 ret = 1;
 941
 942 end:
 943         ERR_print_errors(bio_err);
 944         X509_free(signer);
 945         X509_STORE_free(store);
 946         if (vpm)
 947                 X509_VERIFY_PARAM_free(vpm);
 948         EVP_PKEY_free(key);
 949         EVP_PKEY_free(rkey);
 950         X509_free(issuer);
 951         X509_free(cert);
 952         X509_free(rsigner);
 953         X509_free(rca_cert);
 954         free_index(rdb);
 955         BIO_free_all(cbio);
 956         BIO_free_all(acbio);
 957         BIO_free(out);
 958         OCSP_REQUEST_free(req);
 959         OCSP_RESPONSE_free(resp);
 960         OCSP_BASICRESP_free(bs);
 961         sk_OPENSSL_STRING_free(reqnames);
 962         sk_OCSP_CERTID_free(ids);
 963         sk_X509_pop_free(sign_other, X509_free);
 964         sk_X509_pop_free(verify_other, X509_free);
 965         sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 966
 967         if (use_ssl != -1)
 968                 {
 969                 OPENSSL_free(host);
 970                 OPENSSL_free(port);
 971                 OPENSSL_free(path);
 972                 }
 973
 974         X509V3_EXT_cleanup();
 975         OPENSSL_EXIT(ret);
 976 }
 977
 978 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
 979                                 STACK_OF(OCSP_CERTID) *ids)
 980         {
 981         OCSP_CERTID *id;
 982         if(!issuer)
 983                 {
 984                 BIO_printf(bio_err, "No issuer certificate specified\n");
 985                 return 0;
 986                 }
 987         if(!*req) *req = OCSP_REQUEST_new();
 988         if(!*req) goto err;
 989         id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 990         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 991         if(!OCSP_request_add0_id(*req, id)) goto err;
 992         return 1;
 993
 994         err:
 995         BIO_printf(bio_err, "Error Creating OCSP request\n");
 996         return 0;
 997         }
 998
 999 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
1000                                 STACK_OF(OCSP_CERTID) *ids)
1001         {
1002         OCSP_CERTID *id;
1003         X509_NAME *iname;
1004         ASN1_BIT_STRING *ikey;
1005         ASN1_INTEGER *sno;
1006         if(!issuer)
1007                 {
1008                 BIO_printf(bio_err, "No issuer certificate specified\n");
1009                 return 0;
1010                 }
1011         if(!*req) *req = OCSP_REQUEST_new();
1012         if(!*req) goto err;
1013         iname = X509_get_subject_name(issuer);
1014         ikey = X509_get0_pubkey_bitstr(issuer);
1015         sno = s2i_ASN1_INTEGER(NULL, serial);
1016         if(!sno)
1017                 {
1018                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1019                 return 0;
1020                 }
1021         id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1022         ASN1_INTEGER_free(sno);
1023         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1024         if(!OCSP_request_add0_id(*req, id)) goto err;
1025         return 1;
1026
1027         err:
1028         BIO_printf(bio_err, "Error Creating OCSP request\n");
1029         return 0;
1030         }
1031
1032 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1033                               STACK_OF(OPENSSL_STRING) *names,
1034                               STACK_OF(OCSP_CERTID) *ids, long nsec,
1035                               long maxage)
1036         {
1037         OCSP_CERTID *id;
1038         char *name;
1039         int i;
1040
1041         int status, reason;
1042
1043         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1044
1045         if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1046                 return 1;
1047
1048         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1049                 {
1050                 id = sk_OCSP_CERTID_value(ids, i);
1051                 name = sk_OPENSSL_STRING_value(names, i);
1052                 BIO_printf(out, "%s: ", name);
1053
1054                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1055                                         &rev, &thisupd, &nextupd))
1056                         {
1057                         BIO_puts(out, "ERROR: No Status found.\n");
1058                         continue;
1059                         }
1060
1061                 /* Check validity: if invalid write to output BIO so we
1062                  * know which response this refers to.
1063                  */
1064                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1065                         {
1066                         BIO_puts(out, "WARNING: Status times invalid.\n");
1067                         ERR_print_errors(out);
1068                         }
1069                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1070
1071                 BIO_puts(out, "\tThis Update: ");
1072                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1073                 BIO_puts(out, "\n");
1074
1075                 if(nextupd)
1076                         {
1077                         BIO_puts(out, "\tNext Update: ");
1078                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1079                         BIO_puts(out, "\n");
1080                         }
1081
1082                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1083                         continue;
1084
1085                 if (reason != -1)
1086                         BIO_printf(out, "\tReason: %s\n",
1087                                 OCSP_crl_reason_str(reason));
1088
1089                 BIO_puts(out, "\tRevocation Time: ");
1090                 ASN1_GENERALIZEDTIME_print(out, rev);
1091                 BIO_puts(out, "\n");
1092                 }
1093
1094         return 1;
1095         }
1096
1097
1098 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1099                         X509 *ca, X509 *rcert,
1100                         EVP_PKEY *rkey, const EVP_MD *rmd,
1101                         STACK_OF(X509) *rother, unsigned long flags,
1102                         int nmin, int ndays, int badsig)
1103         {
1104         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1105         OCSP_CERTID *cid, *ca_id = NULL;
1106         OCSP_BASICRESP *bs = NULL;
1107         int i, id_count, ret = 1;
1108
1109         id_count = OCSP_request_onereq_count(req);
1110
1111         if (id_count <= 0)
1112                 {
1113                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1114                 goto end;
1115                 }
1116
1117
1118         bs = OCSP_BASICRESP_new();
1119         thisupd = X509_gmtime_adj(NULL, 0);
1120         if (ndays != -1)
1121                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1122
1123         /* Examine each certificate id in the request */
1124         for (i = 0; i < id_count; i++)
1125                 {
1126                 OCSP_ONEREQ *one;
1127                 ASN1_INTEGER *serial;
1128                 char **inf;
1129                 ASN1_OBJECT *cert_id_md_oid;
1130                 const EVP_MD *cert_id_md;
1131                 one = OCSP_request_onereq_get0(req, i);
1132                 cid = OCSP_onereq_get0_id(one);
1133
1134                 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1135
1136                 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1137                 if (! cert_id_md)
1138                         {
1139                         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1140                                 NULL);
1141                                 goto end;
1142                         }
1143                 if (ca_id) OCSP_CERTID_free(ca_id);
1144                 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1145
1146                 /* Is this request about our CA? */
1147                 if (OCSP_id_issuer_cmp(ca_id, cid))
1148                         {
1149                         OCSP_basic_add1_status(bs, cid,
1150                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1151                                                 0, NULL,
1152                                                 thisupd, nextupd);
1153                         continue;
1154                         }
1155                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1156                 inf = lookup_serial(db, serial);
1157                 if (!inf)
1158                         OCSP_basic_add1_status(bs, cid,
1159                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1160                                                 0, NULL,
1161                                                 thisupd, nextupd);
1162                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1163                         OCSP_basic_add1_status(bs, cid,
1164                                                 V_OCSP_CERTSTATUS_GOOD,
1165                                                 0, NULL,
1166                                                 thisupd, nextupd);
1167                 else if (inf[DB_type][0] == DB_TYPE_REV)
1168                         {
1169                         ASN1_OBJECT *inst = NULL;
1170                         ASN1_TIME *revtm = NULL;
1171                         ASN1_GENERALIZEDTIME *invtm = NULL;
1172                         OCSP_SINGLERESP *single;
1173                         int reason = -1;
1174                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1175                         single = OCSP_basic_add1_status(bs, cid,
1176                                                 V_OCSP_CERTSTATUS_REVOKED,
1177                                                 reason, revtm,
1178                                                 thisupd, nextupd);
1179                         if (invtm)
1180                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1181                         else if (inst)
1182                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1183                         ASN1_OBJECT_free(inst);
1184                         ASN1_TIME_free(revtm);
1185                         ASN1_GENERALIZEDTIME_free(invtm);
1186                         }
1187                 }
1188
1189         OCSP_copy_nonce(bs, req);
1190
1191         OCSP_basic_sign(bs, rcert, rkey, rmd, rother, flags);
1192
1193         if (badsig)
1194                 bs->signature->data[bs->signature->length -1] ^= 0x1;
1195
1196         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1197
1198         end:
1199         ASN1_TIME_free(thisupd);
1200         ASN1_TIME_free(nextupd);
1201         OCSP_CERTID_free(ca_id);
1202         OCSP_BASICRESP_free(bs);
1203         return ret;
1204
1205         }
1206
1207 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1208         {
1209         int i;
1210         BIGNUM *bn = NULL;
1211         char *itmp, *row[DB_NUMBER],**rrow;
1212         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1213         bn = ASN1_INTEGER_to_BN(ser,NULL);
1214         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1215         if (BN_is_zero(bn))
1216                 itmp = BUF_strdup("00");
1217         else
1218                 itmp = BN_bn2hex(bn);
1219         row[DB_serial] = itmp;
1220         BN_free(bn);
1221         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1222         OPENSSL_free(itmp);
1223         return rrow;
1224         }
1225
1226 /* Quick and dirty OCSP server: read in and parse input request */
1227
1228 static BIO *init_responder(const char *port)
1229         {
1230         BIO *acbio = NULL, *bufbio = NULL;
1231         bufbio = BIO_new(BIO_f_buffer());
1232         if (!bufbio)
1233                 goto err;
1234 #ifndef OPENSSL_NO_SOCK
1235         acbio = BIO_new_accept(port);
1236 #else
1237         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1238 #endif
1239         if (!acbio)
1240                 goto err;
1241         BIO_set_accept_bios(acbio, bufbio);
1242         bufbio = NULL;
1243
1244         if (BIO_do_accept(acbio) <= 0)
1245                 {
1246                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1247                         ERR_print_errors(bio_err);
1248                         goto err;
1249                 }
1250
1251         return acbio;
1252
1253         err:
1254         BIO_free_all(acbio);
1255         BIO_free(bufbio);
1256         return NULL;
1257         }
1258
1259 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1260                         const char *port)
1261         {
1262         int have_post = 0, len;
1263         OCSP_REQUEST *req = NULL;
1264         char inbuf[1024];
1265         BIO *cbio = NULL;
1266
1267         if (BIO_do_accept(acbio) <= 0)
1268                 {
1269                         BIO_printf(bio_err, "Error accepting connection\n");
1270                         ERR_print_errors(bio_err);
1271                         return 0;
1272                 }
1273
1274         cbio = BIO_pop(acbio);
1275         *pcbio = cbio;
1276
1277         for(;;)
1278                 {
1279                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1280                 if (len <= 0)
1281                         return 1;
1282                 /* Look for "POST" signalling start of query */
1283                 if (!have_post)
1284                         {
1285                         if(strncmp(inbuf, "POST", 4))
1286                                 {
1287                                 BIO_printf(bio_err, "Invalid request\n");
1288                                 return 1;
1289                                 }
1290                         have_post = 1;
1291                         }
1292                 /* Look for end of headers */
1293                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1294                         break;
1295                 }
1296
1297         /* Try to read OCSP request */
1298
1299         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1300
1301         if (!req)
1302                 {
1303                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1304                 ERR_print_errors(bio_err);
1305                 }
1306
1307         *preq = req;
1308
1309         return 1;
1310
1311         }
1312
1313 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1314         {
1315         char http_resp[] =
1316                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1317                 "Content-Length: %d\r\n\r\n";
1318         if (!cbio)
1319                 return 0;
1320         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1321         i2d_OCSP_RESPONSE_bio(cbio, resp);
1322         (void)BIO_flush(cbio);
1323         return 1;
1324         }
1325
1326 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
1327                                       const STACK_OF(CONF_VALUE) *headers,
1328                                       OCSP_REQUEST *req, int req_timeout)
1329         {
1330         int fd;
1331         int rv;
1332         int i;
1333         OCSP_REQ_CTX *ctx = NULL;
1334         OCSP_RESPONSE *rsp = NULL;
1335         fd_set confds;
1336         struct timeval tv;
1337
1338         if (req_timeout != -1)
1339                 BIO_set_nbio(cbio, 1);
1340
1341         rv = BIO_do_connect(cbio);
1342
1343         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1344                 {
1345                 BIO_puts(err, "Error connecting BIO\n");
1346                 return NULL;
1347                 }
1348
1349         if (BIO_get_fd(cbio, &fd) <= 0)
1350                 {
1351                 BIO_puts(err, "Can't get connection fd\n");
1352                 goto err;
1353                 }
1354
1355         if (req_timeout != -1 && rv <= 0)
1356                 {
1357                 FD_ZERO(&confds);
1358                 openssl_fdset(fd, &confds);
1359                 tv.tv_usec = 0;
1360                 tv.tv_sec = req_timeout;
1361                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1362                 if (rv == 0)
1363                         {
1364                         BIO_puts(err, "Timeout on connect\n");
1365                         return NULL;
1366                         }
1367                 }
1368
1369
1370         ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1371         if (!ctx)
1372                 return NULL;
1373
1374         for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1375                 {
1376                 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1377                 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1378                         goto err;
1379                 }
1380
1381         if (!OCSP_REQ_CTX_set1_req(ctx, req))
1382                 goto err;
1383
1384         for (;;)
1385                 {
1386                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1387                 if (rv != -1)
1388                         break;
1389                 if (req_timeout == -1)
1390                         continue;
1391                 FD_ZERO(&confds);
1392                 openssl_fdset(fd, &confds);
1393                 tv.tv_usec = 0;
1394                 tv.tv_sec = req_timeout;
1395                 if (BIO_should_read(cbio))
1396                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1397                 else if (BIO_should_write(cbio))
1398                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1399                 else
1400                         {
1401                         BIO_puts(err, "Unexpected retry condition\n");
1402                         goto err;
1403                         }
1404                 if (rv == 0)
1405                         {
1406                         BIO_puts(err, "Timeout on request\n");
1407                         break;
1408                         }
1409                 if (rv == -1)
1410                         {
1411                         BIO_puts(err, "Select error\n");
1412                         break;
1413                         }
1414
1415                 }
1416         err:
1417         if (ctx)
1418                 OCSP_REQ_CTX_free(ctx);
1419
1420         return rsp;
1421         }
1422
1423 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1424                                  const char *host, const char *path,
1425                                  const char *port, int use_ssl,
1426                                  const STACK_OF(CONF_VALUE) *headers,
1427                                  int req_timeout)
1428         {
1429         BIO *cbio = NULL;
1430         SSL_CTX *ctx = NULL;
1431         OCSP_RESPONSE *resp = NULL;
1432         cbio = BIO_new_connect(host);
1433         if (!cbio)
1434                 {
1435                 BIO_printf(err, "Error creating connect BIO\n");
1436                 goto end;
1437                 }
1438         if (port) BIO_set_conn_port(cbio, port);
1439         if (use_ssl == 1)
1440                 {
1441                 BIO *sbio;
1442 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1443                 ctx = SSL_CTX_new(SSLv23_client_method());
1444 #elif !defined(OPENSSL_NO_SSL3)
1445                 ctx = SSL_CTX_new(SSLv3_client_method());
1446 #elif !defined(OPENSSL_NO_SSL2)
1447                 ctx = SSL_CTX_new(SSLv2_client_method());
1448 #else
1449                 BIO_printf(err, "SSL is disabled\n");
1450                         goto end;
1451 #endif
1452                 if (ctx == NULL)
1453                         {
1454                         BIO_printf(err, "Error creating SSL context.\n");
1455                         goto end;
1456                         }
1457                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1458                 sbio = BIO_new_ssl(ctx, 1);
1459                 cbio = BIO_push(sbio, cbio);
1460                 }
1461         resp = query_responder(err, cbio, path, headers, req, req_timeout);
1462         if (!resp)
1463                 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1464         end:
1465         if (cbio)
1466                 BIO_free_all(cbio);
1467         if (ctx)
1468                 SSL_CTX_free(ctx);
1469         return resp;
1470         }
1471
1472 #endif