apps/ocsp.c

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