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         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 (!strcmp(*args, "-rmd"))
 572                         {
 573                         if (args[1])
 574                                 {
 575                                 args++;
 576                                 rsign_md = EVP_get_digestbyname(*args);
 577                                 if (!rsign_md)
 578                                         badarg = 1;
 579                                 }
 580                         else badarg = 1;
 581                         }
 582                 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
 583                         {
 584                         badarg = 1;
 585                         }
 586                 args++;
 587                 }
 588
 589         /* Have we anything to do? */
 590         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 591
 592         if (badarg)
 593                 {
 594                 BIO_printf (bio_err, "OCSP utility\n");
 595                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 596                 BIO_printf (bio_err, "where options are\n");
 597                 BIO_printf (bio_err, "-out file          output filename\n");
 598                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 599                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 600                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 601                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 602                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 603                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 604                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 605                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 606                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 607                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 608                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 609                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 610                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 611                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 612                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 613                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 614                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 615                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 616                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 617                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 618                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 619                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 620                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 621                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 622                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 623                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 624                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 625                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 626                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 627                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 628                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 629                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 630                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 631                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 632                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 633                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 634                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 635                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 636                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 637                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 638                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 639                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 640                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 641                 BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request\n");
 642                 goto end;
 643                 }
 644
 645         if(outfile) out = BIO_new_file(outfile, "w");
 646         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 647
 648         if(!out)
 649                 {
 650                 BIO_printf(bio_err, "Error opening output file\n");
 651                 goto end;
 652                 }
 653
 654         if (!req && (add_nonce != 2)) add_nonce = 0;
 655
 656         if (!req && reqin)
 657                 {
 658                 if (!strcmp(reqin, "-"))
 659                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 660                 else
 661                         derbio = BIO_new_file(reqin, "rb");
 662                 if (!derbio)
 663                         {
 664                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 665                         goto end;
 666                         }
 667                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 668                 BIO_free(derbio);
 669                 if(!req)
 670                         {
 671                         BIO_printf(bio_err, "Error reading OCSP request\n");
 672                         goto end;
 673                         }
 674                 }
 675
 676         if (!req && port)
 677                 {
 678                 acbio = init_responder(port);
 679                 if (!acbio)
 680                         goto end;
 681                 }
 682
 683         if (rsignfile && !rdb)
 684                 {
 685                 if (!rkeyfile) rkeyfile = rsignfile;
 686                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 687                         NULL, e, "responder certificate");
 688                 if (!rsigner)
 689                         {
 690                         BIO_printf(bio_err, "Error loading responder certificate\n");
 691                         goto end;
 692                         }
 693                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 694                         NULL, e, "CA certificate");
 695                 if (rcertfile)
 696                         {
 697                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 698                                 NULL, e, "responder other certificates");
 699                         if (!rother) goto end;
 700                         }
 701                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 702                         "responder private key");
 703                 if (!rkey)
 704                         goto end;
 705                 }
 706         if(acbio)
 707                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 708
 709         redo_accept:
 710
 711         if (acbio)
 712                 {
 713                 if (!do_responder(&req, &cbio, acbio, port))
 714                         goto end;
 715                 if (!req)
 716                         {
 717                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 718                         send_ocsp_response(cbio, resp);
 719                         goto done_resp;
 720                         }
 721                 }
 722
 723         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 724                 {
 725                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 726                 goto end;
 727                 }
 728
 729         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 730
 731         if (signfile)
 732                 {
 733                 if (!keyfile) keyfile = signfile;
 734                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 735                         NULL, e, "signer certificate");
 736                 if (!signer)
 737                         {
 738                         BIO_printf(bio_err, "Error loading signer certificate\n");
 739                         goto end;
 740                         }
 741                 if (sign_certfile)
 742                         {
 743                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 744                                 NULL, e, "signer certificates");
 745                         if (!sign_other) goto end;
 746                         }
 747                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 748                         "signer private key");
 749                 if (!key)
 750                         goto end;
 751
 752                 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
 753                         {
 754                         BIO_printf(bio_err, "Error signing OCSP request\n");
 755                         goto end;
 756                         }
 757                 }
 758
 759         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 760
 761         if (reqout)
 762                 {
 763                 if (!strcmp(reqout, "-"))
 764                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 765                 else
 766                         derbio = BIO_new_file(reqout, "wb");
 767                 if(!derbio)
 768                         {
 769                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 770                         goto end;
 771                         }
 772                 i2d_OCSP_REQUEST_bio(derbio, req);
 773                 BIO_free(derbio);
 774                 }
 775
 776         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 777                 {
 778                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 779                 goto end;
 780                 }
 781
 782         if (ridx_filename && !rdb)
 783                 {
 784                 rdb = load_index(ridx_filename, NULL);
 785                 if (!rdb) goto end;
 786                 if (!index_index(rdb)) goto end;
 787                 }
 788
 789         if (rdb)
 790                 {
 791                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,rsign_md, rother, rflags, nmin, ndays, badsig);
 792                 if (cbio)
 793                         send_ocsp_response(cbio, resp);
 794                 }
 795         else if (host)
 796                 {
 797 #ifndef OPENSSL_NO_SOCK
 798                 resp = process_responder(bio_err, req, host, path,
 799                                         port, use_ssl, headers, req_timeout);
 800                 if (!resp)
 801                         goto end;
 802 #else
 803                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 804                 goto end;
 805 #endif
 806                 }
 807         else if (respin)
 808                 {
 809                 if (!strcmp(respin, "-"))
 810                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 811                 else
 812                         derbio = BIO_new_file(respin, "rb");
 813                 if (!derbio)
 814                         {
 815                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 816                         goto end;
 817                         }
 818                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 819                 BIO_free(derbio);
 820                 if(!resp)
 821                         {
 822                         BIO_printf(bio_err, "Error reading OCSP response\n");
 823                         goto end;
 824                         }
 825
 826                 }
 827         else
 828                 {
 829                 ret = 0;
 830                 goto end;
 831                 }
 832
 833         done_resp:
 834
 835         if (respout)
 836                 {
 837                 if (!strcmp(respout, "-"))
 838                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
 839                 else
 840                         derbio = BIO_new_file(respout, "wb");
 841                 if(!derbio)
 842                         {
 843                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 844                         goto end;
 845                         }
 846                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 847                 BIO_free(derbio);
 848                 }
 849
 850         i = OCSP_response_status(resp);
 851
 852         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 853                 {
 854                 BIO_printf(out, "Responder Error: %s (%d)\n",
 855                                 OCSP_response_status_str(i), i);
 856                 if (ignore_err)
 857                         goto redo_accept;
 858                 ret = 0;
 859                 goto end;
 860                 }
 861
 862         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 863
 864         /* If running as responder don't verify our own response */
 865         if (cbio)
 866                 {
 867                 if (accept_count > 0)
 868                         accept_count--;
 869                 /* Redo if more connections needed */
 870                 if (accept_count)
 871                         {
 872                         BIO_free_all(cbio);
 873                         cbio = NULL;
 874                         OCSP_REQUEST_free(req);
 875                         req = NULL;
 876                         OCSP_RESPONSE_free(resp);
 877                         resp = NULL;
 878                         goto redo_accept;
 879                         }
 880                 ret = 0;
 881                 goto end;
 882                 }
 883         else if (ridx_filename)
 884                 {
 885                 ret = 0;
 886                 goto end;
 887                 }
 888
 889         if (!store)
 890                 store = setup_verify(bio_err, CAfile, CApath);
 891         if (!store)
 892                 goto end;
 893         if (vpm)
 894                 X509_STORE_set1_param(store, vpm);
 895         if (verify_certfile)
 896                 {
 897                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 898                         NULL, e, "validator certificate");
 899                 if (!verify_other) goto end;
 900                 }
 901
 902         bs = OCSP_response_get1_basic(resp);
 903
 904         if (!bs)
 905                 {
 906                 BIO_printf(bio_err, "Error parsing response\n");
 907                 goto end;
 908                 }
 909
 910         ret = 0;
 911
 912         if (!noverify)
 913                 {
 914                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 915                         {
 916                         if (i == -1)
 917                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 918                         else
 919                                 {
 920                                 BIO_printf(bio_err, "Nonce Verify error\n");
 921                                 ret = 1;
 922                                 goto end;
 923                                 }
 924                         }
 925
 926                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 927                 if(i <= 0)
 928                         {
 929                         BIO_printf(bio_err, "Response Verify Failure\n");
 930                         ERR_print_errors(bio_err);
 931                         ret = 1;
 932                         }
 933                 else
 934                         BIO_printf(bio_err, "Response verify OK\n");
 935
 936                 }
 937
 938         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 939                 ret = 1;
 940
 941 end:
 942         ERR_print_errors(bio_err);
 943         X509_free(signer);
 944         X509_STORE_free(store);
 945         if (vpm)
 946                 X509_VERIFY_PARAM_free(vpm);
 947         EVP_PKEY_free(key);
 948         EVP_PKEY_free(rkey);
 949         X509_free(issuer);
 950         X509_free(cert);
 951         X509_free(rsigner);
 952         X509_free(rca_cert);
 953         free_index(rdb);
 954         BIO_free_all(cbio);
 955         BIO_free_all(acbio);
 956         BIO_free(out);
 957         OCSP_REQUEST_free(req);
 958         OCSP_RESPONSE_free(resp);
 959         OCSP_BASICRESP_free(bs);
 960         sk_OPENSSL_STRING_free(reqnames);
 961         sk_OCSP_CERTID_free(ids);
 962         sk_X509_pop_free(sign_other, X509_free);
 963         sk_X509_pop_free(verify_other, X509_free);
 964         sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 965
 966         if (use_ssl != -1)
 967                 {
 968                 OPENSSL_free(host);
 969                 OPENSSL_free(port);
 970                 OPENSSL_free(path);
 971                 }
 972
 973         OPENSSL_EXIT(ret);
 974 }
 975
 976 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
 977                                 STACK_OF(OCSP_CERTID) *ids)
 978         {
 979         OCSP_CERTID *id;
 980         if(!issuer)
 981                 {
 982                 BIO_printf(bio_err, "No issuer certificate specified\n");
 983                 return 0;
 984                 }
 985         if(!*req) *req = OCSP_REQUEST_new();
 986         if(!*req) goto err;
 987         id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 988         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 989         if(!OCSP_request_add0_id(*req, id)) goto err;
 990         return 1;
 991
 992         err:
 993         BIO_printf(bio_err, "Error Creating OCSP request\n");
 994         return 0;
 995         }
 996
 997 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
 998                                 STACK_OF(OCSP_CERTID) *ids)
 999         {
1000         OCSP_CERTID *id;
1001         X509_NAME *iname;
1002         ASN1_BIT_STRING *ikey;
1003         ASN1_INTEGER *sno;
1004         if(!issuer)
1005                 {
1006                 BIO_printf(bio_err, "No issuer certificate specified\n");
1007                 return 0;
1008                 }
1009         if(!*req) *req = OCSP_REQUEST_new();
1010         if(!*req) goto err;
1011         iname = X509_get_subject_name(issuer);
1012         ikey = X509_get0_pubkey_bitstr(issuer);
1013         sno = s2i_ASN1_INTEGER(NULL, serial);
1014         if(!sno)
1015                 {
1016                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1017                 return 0;
1018                 }
1019         id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1020         ASN1_INTEGER_free(sno);
1021         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1022         if(!OCSP_request_add0_id(*req, id)) goto err;
1023         return 1;
1024
1025         err:
1026         BIO_printf(bio_err, "Error Creating OCSP request\n");
1027         return 0;
1028         }
1029
1030 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1031                               STACK_OF(OPENSSL_STRING) *names,
1032                               STACK_OF(OCSP_CERTID) *ids, long nsec,
1033                               long maxage)
1034         {
1035         OCSP_CERTID *id;
1036         char *name;
1037         int i;
1038
1039         int status, reason;
1040
1041         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1042
1043         if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1044                 return 1;
1045
1046         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1047                 {
1048                 id = sk_OCSP_CERTID_value(ids, i);
1049                 name = sk_OPENSSL_STRING_value(names, i);
1050                 BIO_printf(out, "%s: ", name);
1051
1052                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1053                                         &rev, &thisupd, &nextupd))
1054                         {
1055                         BIO_puts(out, "ERROR: No Status found.\n");
1056                         continue;
1057                         }
1058
1059                 /* Check validity: if invalid write to output BIO so we
1060                  * know which response this refers to.
1061                  */
1062                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1063                         {
1064                         BIO_puts(out, "WARNING: Status times invalid.\n");
1065                         ERR_print_errors(out);
1066                         }
1067                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1068
1069                 BIO_puts(out, "\tThis Update: ");
1070                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1071                 BIO_puts(out, "\n");
1072
1073                 if(nextupd)
1074                         {
1075                         BIO_puts(out, "\tNext Update: ");
1076                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1077                         BIO_puts(out, "\n");
1078                         }
1079
1080                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1081                         continue;
1082
1083                 if (reason != -1)
1084                         BIO_printf(out, "\tReason: %s\n",
1085                                 OCSP_crl_reason_str(reason));
1086
1087                 BIO_puts(out, "\tRevocation Time: ");
1088                 ASN1_GENERALIZEDTIME_print(out, rev);
1089                 BIO_puts(out, "\n");
1090                 }
1091
1092         return 1;
1093         }
1094
1095
1096 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1097                         X509 *ca, X509 *rcert,
1098                         EVP_PKEY *rkey, const EVP_MD *rmd,
1099                         STACK_OF(X509) *rother, unsigned long flags,
1100                         int nmin, int ndays, int badsig)
1101         {
1102         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1103         OCSP_CERTID *cid, *ca_id = NULL;
1104         OCSP_BASICRESP *bs = NULL;
1105         int i, id_count, ret = 1;
1106
1107         id_count = OCSP_request_onereq_count(req);
1108
1109         if (id_count <= 0)
1110                 {
1111                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1112                 goto end;
1113                 }
1114
1115
1116         bs = OCSP_BASICRESP_new();
1117         thisupd = X509_gmtime_adj(NULL, 0);
1118         if (ndays != -1)
1119                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1120
1121         /* Examine each certificate id in the request */
1122         for (i = 0; i < id_count; i++)
1123                 {
1124                 OCSP_ONEREQ *one;
1125                 ASN1_INTEGER *serial;
1126                 char **inf;
1127                 ASN1_OBJECT *cert_id_md_oid;
1128                 const EVP_MD *cert_id_md;
1129                 one = OCSP_request_onereq_get0(req, i);
1130                 cid = OCSP_onereq_get0_id(one);
1131
1132                 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1133
1134                 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1135                 if (! cert_id_md)
1136                         {
1137                         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1138                                 NULL);
1139                                 goto end;
1140                         }
1141                 if (ca_id) OCSP_CERTID_free(ca_id);
1142                 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1143
1144                 /* Is this request about our CA? */
1145                 if (OCSP_id_issuer_cmp(ca_id, cid))
1146                         {
1147                         OCSP_basic_add1_status(bs, cid,
1148                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1149                                                 0, NULL,
1150                                                 thisupd, nextupd);
1151                         continue;
1152                         }
1153                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1154                 inf = lookup_serial(db, serial);
1155                 if (!inf)
1156                         OCSP_basic_add1_status(bs, cid,
1157                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1158                                                 0, NULL,
1159                                                 thisupd, nextupd);
1160                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1161                         OCSP_basic_add1_status(bs, cid,
1162                                                 V_OCSP_CERTSTATUS_GOOD,
1163                                                 0, NULL,
1164                                                 thisupd, nextupd);
1165                 else if (inf[DB_type][0] == DB_TYPE_REV)
1166                         {
1167                         ASN1_OBJECT *inst = NULL;
1168                         ASN1_TIME *revtm = NULL;
1169                         ASN1_GENERALIZEDTIME *invtm = NULL;
1170                         OCSP_SINGLERESP *single;
1171                         int reason = -1;
1172                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1173                         single = OCSP_basic_add1_status(bs, cid,
1174                                                 V_OCSP_CERTSTATUS_REVOKED,
1175                                                 reason, revtm,
1176                                                 thisupd, nextupd);
1177                         if (invtm)
1178                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1179                         else if (inst)
1180                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1181                         ASN1_OBJECT_free(inst);
1182                         ASN1_TIME_free(revtm);
1183                         ASN1_GENERALIZEDTIME_free(invtm);
1184                         }
1185                 }
1186
1187         OCSP_copy_nonce(bs, req);
1188
1189         OCSP_basic_sign(bs, rcert, rkey, rmd, rother, flags);
1190
1191         if (badsig)
1192                 bs->signature->data[bs->signature->length -1] ^= 0x1;
1193
1194         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1195
1196         end:
1197         ASN1_TIME_free(thisupd);
1198         ASN1_TIME_free(nextupd);
1199         OCSP_CERTID_free(ca_id);
1200         OCSP_BASICRESP_free(bs);
1201         return ret;
1202
1203         }
1204
1205 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1206         {
1207         int i;
1208         BIGNUM *bn = NULL;
1209         char *itmp, *row[DB_NUMBER],**rrow;
1210         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1211         bn = ASN1_INTEGER_to_BN(ser,NULL);
1212         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1213         if (BN_is_zero(bn))
1214                 itmp = BUF_strdup("00");
1215         else
1216                 itmp = BN_bn2hex(bn);
1217         row[DB_serial] = itmp;
1218         BN_free(bn);
1219         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1220         OPENSSL_free(itmp);
1221         return rrow;
1222         }
1223
1224 /* Quick and dirty OCSP server: read in and parse input request */
1225
1226 static BIO *init_responder(const char *port)
1227         {
1228         BIO *acbio = NULL, *bufbio = NULL;
1229         bufbio = BIO_new(BIO_f_buffer());
1230         if (!bufbio)
1231                 goto err;
1232 #ifndef OPENSSL_NO_SOCK
1233         acbio = BIO_new_accept(port);
1234 #else
1235         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1236 #endif
1237         if (!acbio)
1238                 goto err;
1239         BIO_set_accept_bios(acbio, bufbio);
1240         bufbio = NULL;
1241
1242         if (BIO_do_accept(acbio) <= 0)
1243                 {
1244                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1245                         ERR_print_errors(bio_err);
1246                         goto err;
1247                 }
1248
1249         return acbio;
1250
1251         err:
1252         BIO_free_all(acbio);
1253         BIO_free(bufbio);
1254         return NULL;
1255         }
1256
1257 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1258                         const char *port)
1259         {
1260         int have_post = 0, len;
1261         OCSP_REQUEST *req = NULL;
1262         char inbuf[1024];
1263         BIO *cbio = NULL;
1264
1265         if (BIO_do_accept(acbio) <= 0)
1266                 {
1267                         BIO_printf(bio_err, "Error accepting connection\n");
1268                         ERR_print_errors(bio_err);
1269                         return 0;
1270                 }
1271
1272         cbio = BIO_pop(acbio);
1273         *pcbio = cbio;
1274
1275         for(;;)
1276                 {
1277                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1278                 if (len <= 0)
1279                         return 1;
1280                 /* Look for "POST" signalling start of query */
1281                 if (!have_post)
1282                         {
1283                         if(strncmp(inbuf, "POST", 4))
1284                                 {
1285                                 BIO_printf(bio_err, "Invalid request\n");
1286                                 return 1;
1287                                 }
1288                         have_post = 1;
1289                         }
1290                 /* Look for end of headers */
1291                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1292                         break;
1293                 }
1294
1295         /* Try to read OCSP request */
1296
1297         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1298
1299         if (!req)
1300                 {
1301                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1302                 ERR_print_errors(bio_err);
1303                 }
1304
1305         *preq = req;
1306
1307         return 1;
1308
1309         }
1310
1311 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1312         {
1313         char http_resp[] =
1314                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1315                 "Content-Length: %d\r\n\r\n";
1316         if (!cbio)
1317                 return 0;
1318         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1319         i2d_OCSP_RESPONSE_bio(cbio, resp);
1320         (void)BIO_flush(cbio);
1321         return 1;
1322         }
1323
1324 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
1325                                       const STACK_OF(CONF_VALUE) *headers,
1326                                       OCSP_REQUEST *req, int req_timeout)
1327         {
1328         int fd;
1329         int rv;
1330         int i;
1331         OCSP_REQ_CTX *ctx = NULL;
1332         OCSP_RESPONSE *rsp = NULL;
1333         fd_set confds;
1334         struct timeval tv;
1335
1336         if (req_timeout != -1)
1337                 BIO_set_nbio(cbio, 1);
1338
1339         rv = BIO_do_connect(cbio);
1340
1341         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1342                 {
1343                 BIO_puts(err, "Error connecting BIO\n");
1344                 return NULL;
1345                 }
1346
1347         if (BIO_get_fd(cbio, &fd) <= 0)
1348                 {
1349                 BIO_puts(err, "Can't get connection fd\n");
1350                 goto err;
1351                 }
1352
1353         if (req_timeout != -1 && rv <= 0)
1354                 {
1355                 FD_ZERO(&confds);
1356                 openssl_fdset(fd, &confds);
1357                 tv.tv_usec = 0;
1358                 tv.tv_sec = req_timeout;
1359                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1360                 if (rv == 0)
1361                         {
1362                         BIO_puts(err, "Timeout on connect\n");
1363                         return NULL;
1364                         }
1365                 }
1366
1367
1368         ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1369         if (!ctx)
1370                 return NULL;
1371
1372         for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1373                 {
1374                 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1375                 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1376                         goto err;
1377                 }
1378
1379         if (!OCSP_REQ_CTX_set1_req(ctx, req))
1380                 goto err;
1381
1382         for (;;)
1383                 {
1384                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1385                 if (rv != -1)
1386                         break;
1387                 if (req_timeout == -1)
1388                         continue;
1389                 FD_ZERO(&confds);
1390                 openssl_fdset(fd, &confds);
1391                 tv.tv_usec = 0;
1392                 tv.tv_sec = req_timeout;
1393                 if (BIO_should_read(cbio))
1394                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1395                 else if (BIO_should_write(cbio))
1396                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1397                 else
1398                         {
1399                         BIO_puts(err, "Unexpected retry condition\n");
1400                         goto err;
1401                         }
1402                 if (rv == 0)
1403                         {
1404                         BIO_puts(err, "Timeout on request\n");
1405                         break;
1406                         }
1407                 if (rv == -1)
1408                         {
1409                         BIO_puts(err, "Select error\n");
1410                         break;
1411                         }
1412
1413                 }
1414         err:
1415         if (ctx)
1416                 OCSP_REQ_CTX_free(ctx);
1417
1418         return rsp;
1419         }
1420
1421 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1422                                  const char *host, const char *path,
1423                                  const char *port, int use_ssl,
1424                                  const STACK_OF(CONF_VALUE) *headers,
1425                                  int req_timeout)
1426         {
1427         BIO *cbio = NULL;
1428         SSL_CTX *ctx = NULL;
1429         OCSP_RESPONSE *resp = NULL;
1430         cbio = BIO_new_connect(host);
1431         if (!cbio)
1432                 {
1433                 BIO_printf(err, "Error creating connect BIO\n");
1434                 goto end;
1435                 }
1436         if (port) BIO_set_conn_port(cbio, port);
1437         if (use_ssl == 1)
1438                 {
1439                 BIO *sbio;
1440 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1441                 ctx = SSL_CTX_new(SSLv23_client_method());
1442 #elif !defined(OPENSSL_NO_SSL3)
1443                 ctx = SSL_CTX_new(SSLv3_client_method());
1444 #elif !defined(OPENSSL_NO_SSL2)
1445                 ctx = SSL_CTX_new(SSLv2_client_method());
1446 #else
1447                 BIO_printf(err, "SSL is disabled\n");
1448                         goto end;
1449 #endif
1450                 if (ctx == NULL)
1451                         {
1452                         BIO_printf(err, "Error creating SSL context.\n");
1453                         goto end;
1454                         }
1455                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1456                 sbio = BIO_new_ssl(ctx, 1);
1457                 cbio = BIO_push(sbio, cbio);
1458                 }
1459         resp = query_responder(err, cbio, path, headers, req, req_timeout);
1460         if (!resp)
1461                 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1462         end:
1463         if (cbio)
1464                 BIO_free_all(cbio);
1465         if (ctx)
1466                 SSL_CTX_free(ctx);
1467         return resp;
1468         }
1469
1470 #endif