crypto/external/bsd/openssl/dist/apps/ocsp.c

   1 /* ocsp.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 2000.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59 #ifndef OPENSSL_NO_OCSP
  60
  61 # ifdef OPENSSL_SYS_VMS
  62 #  define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined
  63                                  * on OpenVMS */
  64 # endif
  65
  66 # define USE_SOCKETS
  67
  68 # include <stdio.h>
  69 # include <stdlib.h>
  70 # include <string.h>
  71 # include <time.h>
  72 # include "apps.h"              /* needs to be included before the openssl
  73                                  * headers! */
  74 # include <openssl/e_os2.h>
  75 # include <openssl/crypto.h>
  76 # include <openssl/err.h>
  77 # include <openssl/ssl.h>
  78 # include <openssl/evp.h>
  79 # include <openssl/bn.h>
  80 # include <openssl/x509v3.h>
  81
  82 # if defined(NETWARE_CLIB)
  83 #  ifdef NETWARE_BSDSOCK
  84 #   include <sys/socket.h>
  85 #   include <sys/bsdskt.h>
  86 #  else
  87 #   include <novsock2.h>
  88 #  endif
  89 # elif defined(NETWARE_LIBC)
  90 #  ifdef NETWARE_BSDSOCK
  91 #   include <sys/select.h>
  92 #  else
  93 #   include <novsock2.h>
  94 #  endif
  95 # endif
  96
  97 /* Maximum leeway in validity period: default 5 minutes */
  98 # define MAX_VALIDITY_PERIOD     (5 * 60)
  99
 100 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 101                          const EVP_MD *cert_id_md, X509 *issuer,
 102                          STACK_OF(OCSP_CERTID) *ids);
 103 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 104                            const EVP_MD *cert_id_md, X509 *issuer,
 105                            STACK_OF(OCSP_CERTID) *ids);
 106 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 107                               STACK_OF(OPENSSL_STRING) *names,
 108                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 109                               long maxage);
 110
 111 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req,
 112                               CA_DB *db, X509 *ca, X509 *rcert,
 113                               EVP_PKEY *rkey, STACK_OF(X509) *rother,
 114                               unsigned long flags, int nmin, int ndays);
 115
 116 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
 117 static BIO *init_responder(char *port);
 118 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
 119                         char *port);
 120 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
 121 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
 122                                       STACK_OF(CONF_VALUE) *headers,
 123                                       OCSP_REQUEST *req, int req_timeout);
 124
 125 # undef PROG
 126 # define PROG ocsp_main
 127
 128 int MAIN(int, char **);
 129
 130 int MAIN(int argc, char **argv)
 131 {
 132     ENGINE *e = NULL;
 133     char **args;
 134     char *host = NULL, *port = NULL, *path = "/";
 135     char *thost = NULL, *tport = NULL, *tpath = NULL;
 136     char *reqin = NULL, *respin = NULL;
 137     char *reqout = NULL, *respout = NULL;
 138     char *signfile = NULL, *keyfile = NULL;
 139     char *rsignfile = NULL, *rkeyfile = NULL;
 140     char *outfile = NULL;
 141     int add_nonce = 1, noverify = 0, use_ssl = -1;
 142     STACK_OF(CONF_VALUE) *headers = NULL;
 143     OCSP_REQUEST *req = NULL;
 144     OCSP_RESPONSE *resp = NULL;
 145     OCSP_BASICRESP *bs = NULL;
 146     X509 *issuer = NULL, *cert = NULL;
 147     X509 *signer = NULL, *rsigner = NULL;
 148     EVP_PKEY *key = NULL, *rkey = NULL;
 149     BIO *acbio = NULL, *cbio = NULL;
 150     BIO *derbio = NULL;
 151     BIO *out = NULL;
 152     int req_timeout = -1;
 153     int req_text = 0, resp_text = 0;
 154     long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 155     char *CAfile = NULL, *CApath = NULL;
 156     X509_STORE *store = NULL;
 157     STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 158     char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 159     unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 160     int ret = 1;
 161     int accept_count = -1;
 162     int badarg = 0;
 163     int i;
 164     int ignore_err = 0;
 165     STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 166     STACK_OF(OCSP_CERTID) *ids = NULL;
 167
 168     X509 *rca_cert = NULL;
 169     char *ridx_filename = NULL;
 170     char *rca_filename = NULL;
 171     CA_DB *rdb = NULL;
 172     int nmin = 0, ndays = -1;
 173     const EVP_MD *cert_id_md = NULL;
 174
 175     if (bio_err == NULL)
 176         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 177
 178     if (!load_config(bio_err, NULL))
 179         goto end;
 180     SSL_load_error_strings();
 181     OpenSSL_add_ssl_algorithms();
 182     args = argv + 1;
 183     reqnames = sk_OPENSSL_STRING_new_null();
 184     ids = sk_OCSP_CERTID_new_null();
 185     while (!badarg && *args && *args[0] == '-') {
 186         if (!strcmp(*args, "-out")) {
 187             if (args[1]) {
 188                 args++;
 189                 outfile = *args;
 190             } else
 191                 badarg = 1;
 192         } else if (!strcmp(*args, "-timeout")) {
 193             if (args[1]) {
 194                 args++;
 195                 req_timeout = atol(*args);
 196                 if (req_timeout < 0) {
 197                     BIO_printf(bio_err, "Illegal timeout value %s\n", *args);
 198                     badarg = 1;
 199                 }
 200             } else
 201                 badarg = 1;
 202         } else if (!strcmp(*args, "-url")) {
 203             if (thost)
 204                 OPENSSL_free(thost);
 205             if (tport)
 206                 OPENSSL_free(tport);
 207             if (tpath)
 208                 OPENSSL_free(tpath);
 209             if (args[1]) {
 210                 args++;
 211                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) {
 212                     BIO_printf(bio_err, "Error parsing URL\n");
 213                     badarg = 1;
 214                 }
 215                 thost = host;
 216                 tport = port;
 217                 tpath = path;
 218             } else
 219                 badarg = 1;
 220         } else if (!strcmp(*args, "-host")) {
 221             if (args[1]) {
 222                 args++;
 223                 host = *args;
 224             } else
 225                 badarg = 1;
 226         } else if (!strcmp(*args, "-port")) {
 227             if (args[1]) {
 228                 args++;
 229                 port = BUF_strdup(*args);
 230             } else
 231                 badarg = 1;
 232         } else if (!strcmp(*args, "-header")) {
 233             if (args[1] && args[2]) {
 234                 if (!X509V3_add_value(args[1], args[2], &headers))
 235                     goto end;
 236                 args += 2;
 237             } else
 238                 badarg = 1;
 239         } else if (!strcmp(*args, "-ignore_err"))
 240             ignore_err = 1;
 241         else if (!strcmp(*args, "-noverify"))
 242             noverify = 1;
 243         else if (!strcmp(*args, "-nonce"))
 244             add_nonce = 2;
 245         else if (!strcmp(*args, "-no_nonce"))
 246             add_nonce = 0;
 247         else if (!strcmp(*args, "-resp_no_certs"))
 248             rflags |= OCSP_NOCERTS;
 249         else if (!strcmp(*args, "-resp_key_id"))
 250             rflags |= OCSP_RESPID_KEY;
 251         else if (!strcmp(*args, "-no_certs"))
 252             sign_flags |= OCSP_NOCERTS;
 253         else if (!strcmp(*args, "-no_signature_verify"))
 254             verify_flags |= OCSP_NOSIGS;
 255         else if (!strcmp(*args, "-no_cert_verify"))
 256             verify_flags |= OCSP_NOVERIFY;
 257         else if (!strcmp(*args, "-no_chain"))
 258             verify_flags |= OCSP_NOCHAIN;
 259         else if (!strcmp(*args, "-no_cert_checks"))
 260             verify_flags |= OCSP_NOCHECKS;
 261         else if (!strcmp(*args, "-no_explicit"))
 262             verify_flags |= OCSP_NOEXPLICIT;
 263         else if (!strcmp(*args, "-trust_other"))
 264             verify_flags |= OCSP_TRUSTOTHER;
 265         else if (!strcmp(*args, "-no_intern"))
 266             verify_flags |= OCSP_NOINTERN;
 267         else if (!strcmp(*args, "-text")) {
 268             req_text = 1;
 269             resp_text = 1;
 270         } else if (!strcmp(*args, "-req_text"))
 271             req_text = 1;
 272         else if (!strcmp(*args, "-resp_text"))
 273             resp_text = 1;
 274         else if (!strcmp(*args, "-reqin")) {
 275             if (args[1]) {
 276                 args++;
 277                 reqin = *args;
 278             } else
 279                 badarg = 1;
 280         } else if (!strcmp(*args, "-respin")) {
 281             if (args[1]) {
 282                 args++;
 283                 respin = *args;
 284             } else
 285                 badarg = 1;
 286         } else if (!strcmp(*args, "-signer")) {
 287             if (args[1]) {
 288                 args++;
 289                 signfile = *args;
 290             } else
 291                 badarg = 1;
 292         } else if (!strcmp(*args, "-VAfile")) {
 293             if (args[1]) {
 294                 args++;
 295                 verify_certfile = *args;
 296                 verify_flags |= OCSP_TRUSTOTHER;
 297             } else
 298                 badarg = 1;
 299         } else if (!strcmp(*args, "-sign_other")) {
 300             if (args[1]) {
 301                 args++;
 302                 sign_certfile = *args;
 303             } else
 304                 badarg = 1;
 305         } else if (!strcmp(*args, "-verify_other")) {
 306             if (args[1]) {
 307                 args++;
 308                 verify_certfile = *args;
 309             } else
 310                 badarg = 1;
 311         } else if (!strcmp(*args, "-CAfile")) {
 312             if (args[1]) {
 313                 args++;
 314                 CAfile = *args;
 315             } else
 316                 badarg = 1;
 317         } else if (!strcmp(*args, "-CApath")) {
 318             if (args[1]) {
 319                 args++;
 320                 CApath = *args;
 321             } else
 322                 badarg = 1;
 323         } else if (!strcmp(*args, "-validity_period")) {
 324             if (args[1]) {
 325                 args++;
 326                 nsec = atol(*args);
 327                 if (nsec < 0) {
 328                     BIO_printf(bio_err,
 329                                "Illegal validity period %s\n", *args);
 330                     badarg = 1;
 331                 }
 332             } else
 333                 badarg = 1;
 334         } else if (!strcmp(*args, "-status_age")) {
 335             if (args[1]) {
 336                 args++;
 337                 maxage = atol(*args);
 338                 if (maxage < 0) {
 339                     BIO_printf(bio_err, "Illegal validity age %s\n", *args);
 340                     badarg = 1;
 341                 }
 342             } else
 343                 badarg = 1;
 344         } else if (!strcmp(*args, "-signkey")) {
 345             if (args[1]) {
 346                 args++;
 347                 keyfile = *args;
 348             } else
 349                 badarg = 1;
 350         } else if (!strcmp(*args, "-reqout")) {
 351             if (args[1]) {
 352                 args++;
 353                 reqout = *args;
 354             } else
 355                 badarg = 1;
 356         } else if (!strcmp(*args, "-respout")) {
 357             if (args[1]) {
 358                 args++;
 359                 respout = *args;
 360             } else
 361                 badarg = 1;
 362         } else if (!strcmp(*args, "-path")) {
 363             if (args[1]) {
 364                 args++;
 365                 path = *args;
 366             } else
 367                 badarg = 1;
 368         } else if (!strcmp(*args, "-issuer")) {
 369             if (args[1]) {
 370                 args++;
 371                 X509_free(issuer);
 372                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 373                                    NULL, e, "issuer certificate");
 374                 if (!issuer)
 375                     goto end;
 376             } else
 377                 badarg = 1;
 378         } else if (!strcmp(*args, "-cert")) {
 379             if (args[1]) {
 380                 args++;
 381                 X509_free(cert);
 382                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 383                                  NULL, e, "certificate");
 384                 if (!cert)
 385                     goto end;
 386                 if (!cert_id_md)
 387                     cert_id_md = EVP_sha1();
 388                 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 389                     goto end;
 390                 if (!sk_OPENSSL_STRING_push(reqnames, *args))
 391                     goto end;
 392             } else
 393                 badarg = 1;
 394         } else if (!strcmp(*args, "-serial")) {
 395             if (args[1]) {
 396                 args++;
 397                 if (!cert_id_md)
 398                     cert_id_md = EVP_sha1();
 399                 if (!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
 400                     goto end;
 401                 if (!sk_OPENSSL_STRING_push(reqnames, *args))
 402                     goto end;
 403             } else
 404                 badarg = 1;
 405         } else if (!strcmp(*args, "-index")) {
 406             if (args[1]) {
 407                 args++;
 408                 ridx_filename = *args;
 409             } else
 410                 badarg = 1;
 411         } else if (!strcmp(*args, "-CA")) {
 412             if (args[1]) {
 413                 args++;
 414                 rca_filename = *args;
 415             } else
 416                 badarg = 1;
 417         } else if (!strcmp(*args, "-nmin")) {
 418             if (args[1]) {
 419                 args++;
 420                 nmin = atol(*args);
 421                 if (nmin < 0) {
 422                     BIO_printf(bio_err, "Illegal update period %s\n", *args);
 423                     badarg = 1;
 424                 }
 425             }
 426             if (ndays == -1)
 427                 ndays = 0;
 428             else
 429                 badarg = 1;
 430         } else if (!strcmp(*args, "-nrequest")) {
 431             if (args[1]) {
 432                 args++;
 433                 accept_count = atol(*args);
 434                 if (accept_count < 0) {
 435                     BIO_printf(bio_err, "Illegal accept count %s\n", *args);
 436                     badarg = 1;
 437                 }
 438             } else
 439                 badarg = 1;
 440         } else if (!strcmp(*args, "-ndays")) {
 441             if (args[1]) {
 442                 args++;
 443                 ndays = atol(*args);
 444                 if (ndays < 0) {
 445                     BIO_printf(bio_err, "Illegal update period %s\n", *args);
 446                     badarg = 1;
 447                 }
 448             } else
 449                 badarg = 1;
 450         } else if (!strcmp(*args, "-rsigner")) {
 451             if (args[1]) {
 452                 args++;
 453                 rsignfile = *args;
 454             } else
 455                 badarg = 1;
 456         } else if (!strcmp(*args, "-rkey")) {
 457             if (args[1]) {
 458                 args++;
 459                 rkeyfile = *args;
 460             } else
 461                 badarg = 1;
 462         } else if (!strcmp(*args, "-rother")) {
 463             if (args[1]) {
 464                 args++;
 465                 rcertfile = *args;
 466             } else
 467                 badarg = 1;
 468         } else if ((cert_id_md = EVP_get_digestbyname((*args) + 1)) == NULL) {
 469             badarg = 1;
 470         }
 471         args++;
 472     }
 473
 474     /* Have we anything to do? */
 475     if (!req && !reqin && !respin && !(port && ridx_filename))
 476         badarg = 1;
 477
 478     if (badarg) {
 479         BIO_printf(bio_err, "OCSP utility\n");
 480         BIO_printf(bio_err, "Usage ocsp [options]\n");
 481         BIO_printf(bio_err, "where options are\n");
 482         BIO_printf(bio_err, "-out file            output filename\n");
 483         BIO_printf(bio_err, "-issuer file         issuer certificate\n");
 484         BIO_printf(bio_err, "-cert file           certificate to check\n");
 485         BIO_printf(bio_err, "-serial n            serial number to check\n");
 486         BIO_printf(bio_err,
 487                    "-signer file         certificate to sign OCSP request with\n");
 488         BIO_printf(bio_err,
 489                    "-signkey file        private key to sign OCSP request with\n");
 490         BIO_printf(bio_err,
 491                    "-sign_other file     additional certificates to include in signed request\n");
 492         BIO_printf(bio_err,
 493                    "-no_certs            don't include any certificates in signed request\n");
 494         BIO_printf(bio_err,
 495                    "-req_text            print text form of request\n");
 496         BIO_printf(bio_err,
 497                    "-resp_text           print text form of response\n");
 498         BIO_printf(bio_err,
 499                    "-text                print text form of request and response\n");
 500         BIO_printf(bio_err,
 501                    "-reqout file         write DER encoded OCSP request to \"file\"\n");
 502         BIO_printf(bio_err,
 503                    "-respout file        write DER encoded OCSP reponse to \"file\"\n");
 504         BIO_printf(bio_err,
 505                    "-reqin file          read DER encoded OCSP request from \"file\"\n");
 506         BIO_printf(bio_err,
 507                    "-respin file         read DER encoded OCSP reponse from \"file\"\n");
 508         BIO_printf(bio_err,
 509                    "-nonce               add OCSP nonce to request\n");
 510         BIO_printf(bio_err,
 511                    "-no_nonce            don't add OCSP nonce to request\n");
 512         BIO_printf(bio_err, "-url URL             OCSP responder URL\n");
 513         BIO_printf(bio_err,
 514                    "-host host:n         send OCSP request to host on port n\n");
 515         BIO_printf(bio_err,
 516                    "-path                path to use in OCSP request\n");
 517         BIO_printf(bio_err,
 518                    "-CApath dir          trusted certificates directory\n");
 519         BIO_printf(bio_err,
 520                    "-CAfile file         trusted certificates file\n");
 521         BIO_printf(bio_err,
 522                    "-no_alt_chains       only ever use the first certificate chain found\n");
 523         BIO_printf(bio_err,
 524                    "-VAfile file         validator certificates file\n");
 525         BIO_printf(bio_err,
 526                    "-validity_period n   maximum validity discrepancy in seconds\n");
 527         BIO_printf(bio_err,
 528                    "-status_age n        maximum status age in seconds\n");
 529         BIO_printf(bio_err,
 530                    "-noverify            don't verify response at all\n");
 531         BIO_printf(bio_err,
 532                    "-verify_other file   additional certificates to search for signer\n");
 533         BIO_printf(bio_err,
 534                    "-trust_other         don't verify additional certificates\n");
 535         BIO_printf(bio_err,
 536                    "-no_intern           don't search certificates contained in response for signer\n");
 537         BIO_printf(bio_err,
 538                    "-no_signature_verify don't check signature on response\n");
 539         BIO_printf(bio_err,
 540                    "-no_cert_verify      don't check signing certificate\n");
 541         BIO_printf(bio_err,
 542                    "-no_chain            don't chain verify response\n");
 543         BIO_printf(bio_err,
 544                    "-no_cert_checks      don't do additional checks on signing certificate\n");
 545         BIO_printf(bio_err,
 546                    "-port num            port to run responder on\n");
 547         BIO_printf(bio_err,
 548                    "-index file          certificate status index file\n");
 549         BIO_printf(bio_err, "-CA file             CA certificate\n");
 550         BIO_printf(bio_err,
 551                    "-rsigner file        responder certificate to sign responses with\n");
 552         BIO_printf(bio_err,
 553                    "-rkey file           responder key to sign responses with\n");
 554         BIO_printf(bio_err,
 555                    "-rother file         other certificates to include in response\n");
 556         BIO_printf(bio_err,
 557                    "-resp_no_certs       don't include any certificates in response\n");
 558         BIO_printf(bio_err,
 559                    "-nmin n              number of minutes before next update\n");
 560         BIO_printf(bio_err,
 561                    "-ndays n             number of days before next update\n");
 562         BIO_printf(bio_err,
 563                    "-resp_key_id         identify reponse by signing certificate key ID\n");
 564         BIO_printf(bio_err,
 565                    "-nrequest n          number of requests to accept (default unlimited)\n");
 566         BIO_printf(bio_err,
 567                    "-<dgst alg>          use specified digest in the request\n");
 568         BIO_printf(bio_err,
 569                    "-timeout n           timeout connection to OCSP responder after n seconds\n");
 570         goto end;
 571     }
 572
 573     if (outfile)
 574         out = BIO_new_file(outfile, "w");
 575     else
 576         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 577
 578     if (!out) {
 579         BIO_printf(bio_err, "Error opening output file\n");
 580         goto end;
 581     }
 582
 583     if (!req && (add_nonce != 2))
 584         add_nonce = 0;
 585
 586     if (!req && reqin) {
 587         derbio = BIO_new_file(reqin, "rb");
 588         if (!derbio) {
 589             BIO_printf(bio_err, "Error Opening OCSP request file\n");
 590             goto end;
 591         }
 592         req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 593         BIO_free(derbio);
 594         if (!req) {
 595             BIO_printf(bio_err, "Error reading OCSP request\n");
 596             goto end;
 597         }
 598     }
 599
 600     if (!req && port) {
 601         acbio = init_responder(port);
 602         if (!acbio)
 603             goto end;
 604     }
 605
 606     if (rsignfile && !rdb) {
 607         if (!rkeyfile)
 608             rkeyfile = rsignfile;
 609         rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 610                             NULL, e, "responder certificate");
 611         if (!rsigner) {
 612             BIO_printf(bio_err, "Error loading responder certificate\n");
 613             goto end;
 614         }
 615         rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 616                              NULL, e, "CA certificate");
 617         if (rcertfile) {
 618             rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 619                                 NULL, e, "responder other certificates");
 620             if (!rother)
 621                 goto end;
 622         }
 623         rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 624                         "responder private key");
 625         if (!rkey)
 626             goto end;
 627     }
 628     if (acbio)
 629         BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 630
 631  redo_accept:
 632
 633     if (acbio) {
 634         if (!do_responder(&req, &cbio, acbio, port))
 635             goto end;
 636         if (!req) {
 637             resp =
 638                 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
 639                                      NULL);
 640             send_ocsp_response(cbio, resp);
 641             goto done_resp;
 642         }
 643     }
 644
 645     if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) {
 646         BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 647         goto end;
 648     }
 649
 650     if (req && add_nonce)
 651         OCSP_request_add1_nonce(req, NULL, -1);
 652
 653     if (signfile) {
 654         if (!keyfile)
 655             keyfile = signfile;
 656         signer = load_cert(bio_err, signfile, FORMAT_PEM,
 657                            NULL, e, "signer certificate");
 658         if (!signer) {
 659             BIO_printf(bio_err, "Error loading signer certificate\n");
 660             goto end;
 661         }
 662         if (sign_certfile) {
 663             sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 664                                     NULL, e, "signer certificates");
 665             if (!sign_other)
 666                 goto end;
 667         }
 668         key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 669                        "signer private key");
 670         if (!key)
 671             goto end;
 672
 673         if (!OCSP_request_sign
 674             (req, signer, key, NULL, sign_other, sign_flags)) {
 675             BIO_printf(bio_err, "Error signing OCSP request\n");
 676             goto end;
 677         }
 678     }
 679
 680     if (req_text && req)
 681         OCSP_REQUEST_print(out, req, 0);
 682
 683     if (reqout) {
 684         derbio = BIO_new_file(reqout, "wb");
 685         if (!derbio) {
 686             BIO_printf(bio_err, "Error opening file %s\n", reqout);
 687             goto end;
 688         }
 689         i2d_OCSP_REQUEST_bio(derbio, req);
 690         BIO_free(derbio);
 691     }
 692
 693     if (ridx_filename && (!rkey || !rsigner || !rca_cert)) {
 694         BIO_printf(bio_err,
 695                    "Need a responder certificate, key and CA for this operation!\n");
 696         goto end;
 697     }
 698
 699     if (ridx_filename && !rdb) {
 700         rdb = load_index(ridx_filename, NULL);
 701         if (!rdb)
 702             goto end;
 703         if (!index_index(rdb))
 704             goto end;
 705     }
 706
 707     if (rdb) {
 708         i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,
 709                                rother, rflags, nmin, ndays);
 710         if (cbio)
 711             send_ocsp_response(cbio, resp);
 712     } else if (host) {
 713 # ifndef OPENSSL_NO_SOCK
 714         resp = process_responder(bio_err, req, host, path,
 715                                  port, use_ssl, headers, req_timeout);
 716         if (!resp)
 717             goto end;
 718 # else
 719         BIO_printf(bio_err,
 720                    "Error creating connect BIO - sockets not supported.\n");
 721         goto end;
 722 # endif
 723     } else if (respin) {
 724         derbio = BIO_new_file(respin, "rb");
 725         if (!derbio) {
 726             BIO_printf(bio_err, "Error Opening OCSP response file\n");
 727             goto end;
 728         }
 729         resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 730         BIO_free(derbio);
 731         if (!resp) {
 732             BIO_printf(bio_err, "Error reading OCSP response\n");
 733             goto end;
 734         }
 735
 736     } else {
 737         ret = 0;
 738         goto end;
 739     }
 740
 741  done_resp:
 742
 743     if (respout) {
 744         derbio = BIO_new_file(respout, "wb");
 745         if (!derbio) {
 746             BIO_printf(bio_err, "Error opening file %s\n", respout);
 747             goto end;
 748         }
 749         i2d_OCSP_RESPONSE_bio(derbio, resp);
 750         BIO_free(derbio);
 751     }
 752
 753     i = OCSP_response_status(resp);
 754
 755     if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
 756         BIO_printf(out, "Responder Error: %s (%d)\n",
 757                    OCSP_response_status_str(i), i);
 758         if (ignore_err)
 759             goto redo_accept;
 760         ret = 0;
 761         goto end;
 762     }
 763
 764     if (resp_text)
 765         OCSP_RESPONSE_print(out, resp, 0);
 766
 767     /* If running as responder don't verify our own response */
 768     if (cbio) {
 769         if (accept_count > 0)
 770             accept_count--;
 771         /* Redo if more connections needed */
 772         if (accept_count) {
 773             BIO_free_all(cbio);
 774             cbio = NULL;
 775             OCSP_REQUEST_free(req);
 776             req = NULL;
 777             OCSP_RESPONSE_free(resp);
 778             resp = NULL;
 779             goto redo_accept;
 780         }
 781         goto end;
 782     }
 783
 784     if (!store)
 785         store = setup_verify(bio_err, CAfile, CApath);
 786     if (!store)
 787         goto end;
 788     if (verify_certfile) {
 789         verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 790                                   NULL, e, "validator certificate");
 791         if (!verify_other)
 792             goto end;
 793     }
 794
 795     bs = OCSP_response_get1_basic(resp);
 796
 797     if (!bs) {
 798         BIO_printf(bio_err, "Error parsing response\n");
 799         goto end;
 800     }
 801
 802     if (!noverify) {
 803         if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
 804             if (i == -1)
 805                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 806             else {
 807                 BIO_printf(bio_err, "Nonce Verify error\n");
 808                 goto end;
 809             }
 810         }
 811
 812         i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 813         if (i < 0)
 814             i = OCSP_basic_verify(bs, NULL, store, 0);
 815
 816         if (i <= 0) {
 817             BIO_printf(bio_err, "Response Verify Failure\n");
 818             ERR_print_errors(bio_err);
 819         } else
 820             BIO_printf(bio_err, "Response verify OK\n");
 821
 822     }
 823
 824     if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 825         goto end;
 826
 827     ret = 0;
 828
 829  end:
 830     ERR_print_errors(bio_err);
 831     X509_free(signer);
 832     X509_STORE_free(store);
 833     EVP_PKEY_free(key);
 834     EVP_PKEY_free(rkey);
 835     X509_free(issuer);
 836     X509_free(cert);
 837     X509_free(rsigner);
 838     X509_free(rca_cert);
 839     free_index(rdb);
 840     BIO_free_all(cbio);
 841     BIO_free_all(acbio);
 842     BIO_free(out);
 843     OCSP_REQUEST_free(req);
 844     OCSP_RESPONSE_free(resp);
 845     OCSP_BASICRESP_free(bs);
 846     sk_OPENSSL_STRING_free(reqnames);
 847     sk_OCSP_CERTID_free(ids);
 848     sk_X509_pop_free(sign_other, X509_free);
 849     sk_X509_pop_free(verify_other, X509_free);
 850     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 851
 852     if (thost)
 853         OPENSSL_free(thost);
 854     if (tport)
 855         OPENSSL_free(tport);
 856     if (tpath)
 857         OPENSSL_free(tpath);
 858
 859     OPENSSL_EXIT(ret);
 860 }
 861
 862 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 863                          const EVP_MD *cert_id_md, X509 *issuer,
 864                          STACK_OF(OCSP_CERTID) *ids)
 865 {
 866     OCSP_CERTID *id;
 867     if (!issuer) {
 868         BIO_printf(bio_err, "No issuer certificate specified\n");
 869         return 0;
 870     }
 871     if (!*req)
 872         *req = OCSP_REQUEST_new();
 873     if (!*req)
 874         goto err;
 875     id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 876     if (!id || !sk_OCSP_CERTID_push(ids, id))
 877         goto err;
 878     if (!OCSP_request_add0_id(*req, id))
 879         goto err;
 880     return 1;
 881
 882  err:
 883     BIO_printf(bio_err, "Error Creating OCSP request\n");
 884     return 0;
 885 }
 886
 887 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 888                            const EVP_MD *cert_id_md, X509 *issuer,
 889                            STACK_OF(OCSP_CERTID) *ids)
 890 {
 891     OCSP_CERTID *id;
 892     X509_NAME *iname;
 893     ASN1_BIT_STRING *ikey;
 894     ASN1_INTEGER *sno;
 895     if (!issuer) {
 896         BIO_printf(bio_err, "No issuer certificate specified\n");
 897         return 0;
 898     }
 899     if (!*req)
 900         *req = OCSP_REQUEST_new();
 901     if (!*req)
 902         goto err;
 903     iname = X509_get_subject_name(issuer);
 904     ikey = X509_get0_pubkey_bitstr(issuer);
 905     sno = s2i_ASN1_INTEGER(NULL, serial);
 906     if (!sno) {
 907         BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 908         return 0;
 909     }
 910     id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 911     ASN1_INTEGER_free(sno);
 912     if (!id || !sk_OCSP_CERTID_push(ids, id))
 913         goto err;
 914     if (!OCSP_request_add0_id(*req, id))
 915         goto err;
 916     return 1;
 917
 918  err:
 919     BIO_printf(bio_err, "Error Creating OCSP request\n");
 920     return 0;
 921 }
 922
 923 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 924                               STACK_OF(OPENSSL_STRING) *names,
 925                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 926                               long maxage)
 927 {
 928     OCSP_CERTID *id;
 929     char *name;
 930     int i;
 931
 932     int status, reason;
 933
 934     ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 935
 936     if (!bs || !req || !sk_OPENSSL_STRING_num(names)
 937         || !sk_OCSP_CERTID_num(ids))
 938         return 1;
 939
 940     for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
 941         id = sk_OCSP_CERTID_value(ids, i);
 942         name = sk_OPENSSL_STRING_value(names, i);
 943         BIO_printf(out, "%s: ", name);
 944
 945         if (!OCSP_resp_find_status(bs, id, &status, &reason,
 946                                    &rev, &thisupd, &nextupd)) {
 947             BIO_puts(out, "ERROR: No Status found.\n");
 948             continue;
 949         }
 950
 951         /*
 952          * Check validity: if invalid write to output BIO so we know which
 953          * response this refers to.
 954          */
 955         if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
 956             BIO_puts(out, "WARNING: Status times invalid.\n");
 957             ERR_print_errors(out);
 958         }
 959         BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 960
 961         BIO_puts(out, "\tThis Update: ");
 962         ASN1_GENERALIZEDTIME_print(out, thisupd);
 963         BIO_puts(out, "\n");
 964
 965         if (nextupd) {
 966             BIO_puts(out, "\tNext Update: ");
 967             ASN1_GENERALIZEDTIME_print(out, nextupd);
 968             BIO_puts(out, "\n");
 969         }
 970
 971         if (status != V_OCSP_CERTSTATUS_REVOKED)
 972             continue;
 973
 974         if (reason != -1)
 975             BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
 976
 977         BIO_puts(out, "\tRevocation Time: ");
 978         ASN1_GENERALIZEDTIME_print(out, rev);
 979         BIO_puts(out, "\n");
 980     }
 981
 982     return 1;
 983 }
 984
 985 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req,
 986                               CA_DB *db, X509 *ca, X509 *rcert,
 987                               EVP_PKEY *rkey, STACK_OF(X509) *rother,
 988                               unsigned long flags, int nmin, int ndays)
 989 {
 990     ASN1_TIME *thisupd = NULL, *nextupd = NULL;
 991     OCSP_CERTID *cid, *ca_id = NULL;
 992     OCSP_BASICRESP *bs = NULL;
 993     int i, id_count, ret = 1;
 994
 995     id_count = OCSP_request_onereq_count(req);
 996
 997     if (id_count <= 0) {
 998         *resp =
 999             OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1000         goto end;
1001     }
1002
1003     bs = OCSP_BASICRESP_new();
1004     thisupd = X509_gmtime_adj(NULL, 0);
1005     if (ndays != -1)
1006         nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24);
1007
1008     /* Examine each certificate id in the request */
1009     for (i = 0; i < id_count; i++) {
1010         OCSP_ONEREQ *one;
1011         ASN1_INTEGER *serial;
1012         char **inf;
1013         ASN1_OBJECT *cert_id_md_oid;
1014         const EVP_MD *cert_id_md;
1015         one = OCSP_request_onereq_get0(req, i);
1016         cid = OCSP_onereq_get0_id(one);
1017
1018         OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1019
1020         cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1021         if (!cert_id_md) {
1022             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1023                                          NULL);
1024             goto end;
1025         }
1026         if (ca_id)
1027             OCSP_CERTID_free(ca_id);
1028         ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1029
1030         /* Is this request about our CA? */
1031         if (OCSP_id_issuer_cmp(ca_id, cid)) {
1032             OCSP_basic_add1_status(bs, cid,
1033                                    V_OCSP_CERTSTATUS_UNKNOWN,
1034                                    0, NULL, thisupd, nextupd);
1035             continue;
1036         }
1037         OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1038         inf = lookup_serial(db, serial);
1039         if (!inf)
1040             OCSP_basic_add1_status(bs, cid,
1041                                    V_OCSP_CERTSTATUS_UNKNOWN,
1042                                    0, NULL, thisupd, nextupd);
1043         else if (inf[DB_type][0] == DB_TYPE_VAL)
1044             OCSP_basic_add1_status(bs, cid,
1045                                    V_OCSP_CERTSTATUS_GOOD,
1046                                    0, NULL, thisupd, nextupd);
1047         else if (inf[DB_type][0] == DB_TYPE_REV) {
1048             ASN1_OBJECT *inst = NULL;
1049             ASN1_TIME *revtm = NULL;
1050             ASN1_GENERALIZEDTIME *invtm = NULL;
1051             OCSP_SINGLERESP *single;
1052             int reason = -1;
1053             unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1054             single = OCSP_basic_add1_status(bs, cid,
1055                                             V_OCSP_CERTSTATUS_REVOKED,
1056                                             reason, revtm, thisupd, nextupd);
1057             if (invtm)
1058                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1059                                              invtm, 0, 0);
1060             else if (inst)
1061                 OCSP_SINGLERESP_add1_ext_i2d(single,
1062                                              NID_hold_instruction_code, inst,
1063                                              0, 0);
1064             ASN1_OBJECT_free(inst);
1065             ASN1_TIME_free(revtm);
1066             ASN1_GENERALIZEDTIME_free(invtm);
1067         }
1068     }
1069
1070     OCSP_copy_nonce(bs, req);
1071
1072     OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags);
1073
1074     *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1075
1076  end:
1077     ASN1_TIME_free(thisupd);
1078     ASN1_TIME_free(nextupd);
1079     OCSP_CERTID_free(ca_id);
1080     OCSP_BASICRESP_free(bs);
1081     return ret;
1082
1083 }
1084
1085 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1086 {
1087     int i;
1088     BIGNUM *bn = NULL;
1089     char *itmp, *row[DB_NUMBER], **rrow;
1090     for (i = 0; i < DB_NUMBER; i++)
1091         row[i] = NULL;
1092     bn = ASN1_INTEGER_to_BN(ser, NULL);
1093     OPENSSL_assert(bn);         /* FIXME: should report an error at this
1094                                  * point and abort */
1095     if (BN_is_zero(bn))
1096         itmp = BUF_strdup("00");
1097     else
1098         itmp = BN_bn2hex(bn);
1099     row[DB_serial] = itmp;
1100     BN_free(bn);
1101     rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1102     OPENSSL_free(itmp);
1103     return rrow;
1104 }
1105
1106 /* Quick and dirty OCSP server: read in and parse input request */
1107
1108 static BIO *init_responder(char *port)
1109 {
1110     BIO *acbio = NULL, *bufbio = NULL;
1111     bufbio = BIO_new(BIO_f_buffer());
1112     if (!bufbio)
1113         goto err;
1114 # ifndef OPENSSL_NO_SOCK
1115     acbio = BIO_new_accept(port);
1116 # else
1117     BIO_printf(bio_err,
1118                "Error setting up accept BIO - sockets not supported.\n");
1119 # endif
1120     if (!acbio)
1121         goto err;
1122     BIO_set_accept_bios(acbio, bufbio);
1123     bufbio = NULL;
1124
1125     if (BIO_do_accept(acbio) <= 0) {
1126         BIO_printf(bio_err, "Error setting up accept BIO\n");
1127         ERR_print_errors(bio_err);
1128         goto err;
1129     }
1130
1131     return acbio;
1132
1133  err:
1134     BIO_free_all(acbio);
1135     BIO_free(bufbio);
1136     return NULL;
1137 }
1138
1139 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1140                         char *port)
1141 {
1142     int have_post = 0, len;
1143     OCSP_REQUEST *req = NULL;
1144     char inbuf[1024];
1145     BIO *cbio = NULL;
1146
1147     if (BIO_do_accept(acbio) <= 0) {
1148         BIO_printf(bio_err, "Error accepting connection\n");
1149         ERR_print_errors(bio_err);
1150         return 0;
1151     }
1152
1153     cbio = BIO_pop(acbio);
1154     *pcbio = cbio;
1155
1156     for (;;) {
1157         len = BIO_gets(cbio, inbuf, sizeof inbuf);
1158         if (len <= 0)
1159             return 1;
1160         /* Look for "POST" signalling start of query */
1161         if (!have_post) {
1162             if (strncmp(inbuf, "POST", 4)) {
1163                 BIO_printf(bio_err, "Invalid request\n");
1164                 return 1;
1165             }
1166             have_post = 1;
1167         }
1168         /* Look for end of headers */
1169         if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1170             break;
1171     }
1172
1173     /* Try to read OCSP request */
1174
1175     req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1176
1177     if (!req) {
1178         BIO_printf(bio_err, "Error parsing OCSP request\n");
1179         ERR_print_errors(bio_err);
1180     }
1181
1182     *preq = req;
1183
1184     return 1;
1185
1186 }
1187
1188 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1189 {
1190     char http_resp[] =
1191         "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1192         "Content-Length: %d\r\n\r\n";
1193     if (!cbio)
1194         return 0;
1195     BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1196     i2d_OCSP_RESPONSE_bio(cbio, resp);
1197     (void)BIO_flush(cbio);
1198     return 1;
1199 }
1200
1201 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1202                                       STACK_OF(CONF_VALUE) *headers,
1203                                       OCSP_REQUEST *req, int req_timeout)
1204 {
1205     int fd;
1206     int rv;
1207     int i;
1208     OCSP_REQ_CTX *ctx = NULL;
1209     OCSP_RESPONSE *rsp = NULL;
1210     fd_set confds;
1211     struct timeval tv;
1212
1213     if (req_timeout != -1)
1214         BIO_set_nbio(cbio, 1);
1215
1216     rv = BIO_do_connect(cbio);
1217
1218     if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1219         BIO_puts(err, "Error connecting BIO\n");
1220         return NULL;
1221     }
1222
1223     if (BIO_get_fd(cbio, &fd) <= 0) {
1224         BIO_puts(err, "Can't get connection fd\n");
1225         goto err;
1226     }
1227
1228     if (req_timeout != -1 && rv <= 0) {
1229         FD_ZERO(&confds);
1230         openssl_fdset(fd, &confds);
1231         tv.tv_usec = 0;
1232         tv.tv_sec = req_timeout;
1233         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1234         if (rv == 0) {
1235             BIO_puts(err, "Timeout on connect\n");
1236             return NULL;
1237         }
1238     }
1239
1240     ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1241     if (!ctx)
1242         return NULL;
1243
1244     for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1245         CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1246         if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1247             goto err;
1248     }
1249
1250     if (!OCSP_REQ_CTX_set1_req(ctx, req))
1251         goto err;
1252
1253     for (;;) {
1254         rv = OCSP_sendreq_nbio(&rsp, ctx);
1255         if (rv != -1)
1256             break;
1257         if (req_timeout == -1)
1258             continue;
1259         FD_ZERO(&confds);
1260         openssl_fdset(fd, &confds);
1261         tv.tv_usec = 0;
1262         tv.tv_sec = req_timeout;
1263         if (BIO_should_read(cbio))
1264             rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1265         else if (BIO_should_write(cbio))
1266             rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1267         else {
1268             BIO_puts(err, "Unexpected retry condition\n");
1269             goto err;
1270         }
1271         if (rv == 0) {
1272             BIO_puts(err, "Timeout on request\n");
1273             break;
1274         }
1275         if (rv == -1) {
1276             BIO_puts(err, "Select error\n");
1277             break;
1278         }
1279
1280     }
1281  err:
1282     if (ctx)
1283         OCSP_REQ_CTX_free(ctx);
1284
1285     return rsp;
1286 }
1287
1288 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1289                                  char *host, char *path, char *port,
1290                                  int use_ssl, STACK_OF(CONF_VALUE) *headers,
1291                                  int req_timeout)
1292 {
1293     BIO *cbio = NULL;
1294     SSL_CTX *ctx = NULL;
1295     OCSP_RESPONSE *resp = NULL;
1296     cbio = BIO_new_connect(host);
1297     if (!cbio) {
1298         BIO_printf(err, "Error creating connect BIO\n");
1299         goto end;
1300     }
1301     if (port)
1302         BIO_set_conn_port(cbio, port);
1303     if (use_ssl == 1) {
1304         BIO *sbio;
1305         ctx = SSL_CTX_new(SSLv23_client_method());
1306         if (ctx == NULL) {
1307             BIO_printf(err, "Error creating SSL context.\n");
1308             goto end;
1309         }
1310         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1311         sbio = BIO_new_ssl(ctx, 1);
1312         cbio = BIO_push(sbio, cbio);
1313     }
1314     resp = query_responder(err, cbio, path, headers, req, req_timeout);
1315     if (!resp)
1316         BIO_printf(bio_err, "Error querying OCSP responder\n");
1317  end:
1318     if (cbio)
1319         BIO_free_all(cbio);
1320     if (ctx)
1321         SSL_CTX_free(ctx);
1322     return resp;
1323 }
1324
1325 #endif