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