apps/ocsp.c

   1 /* ocsp.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 #ifndef OPENSSL_NO_OCSP
  59
  60 #include <stdio.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/pem.h>
  64 #include <openssl/ocsp.h>
  65 #include <openssl/err.h>
  66 #include <openssl/ssl.h>
  67 #include <openssl/bn.h>
  68
  69 /* Maximum leeway in validity period: default 5 minutes */
  70 #define MAX_VALIDITY_PERIOD     (5 * 60)
  71
  72 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
  73                                 STACK_OF(OCSP_CERTID) *ids);
  74 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
  75                                 STACK_OF(OCSP_CERTID) *ids);
  76 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  77                                 STACK *names, STACK_OF(OCSP_CERTID) *ids,
  78                                 long nsec, long maxage);
  79
  80 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
  81                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
  82                         STACK_OF(X509) *rother, unsigned long flags,
  83                         int nmin, int ndays);
  84
  85 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  86 static BIO *init_responder(char *port);
  87 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
  88 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
  89
  90 #undef PROG
  91 #define PROG ocsp_main
  92
  93 int MAIN(int, char **);
  94
  95 int MAIN(int argc, char **argv)
  96         {
  97         ENGINE *e = NULL;
  98         char **args;
  99         char *host = NULL, *port = NULL, *path = "/";
 100         char *reqin = NULL, *respin = NULL;
 101         char *reqout = NULL, *respout = NULL;
 102         char *signfile = NULL, *keyfile = NULL;
 103         char *rsignfile = NULL, *rkeyfile = NULL;
 104         char *outfile = NULL;
 105         int add_nonce = 1, noverify = 0, use_ssl = -1;
 106         OCSP_REQUEST *req = NULL;
 107         OCSP_RESPONSE *resp = NULL;
 108         OCSP_BASICRESP *bs = NULL;
 109         X509 *issuer = NULL, *cert = NULL;
 110         X509 *signer = NULL, *rsigner = NULL;
 111         EVP_PKEY *key = NULL, *rkey = NULL;
 112         BIO *acbio = NULL, *cbio = NULL;
 113         BIO *derbio = NULL;
 114         BIO *out = NULL;
 115         int req_text = 0, resp_text = 0;
 116         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 117         char *CAfile = NULL, *CApath = NULL;
 118         X509_STORE *store = NULL;
 119         SSL_CTX *ctx = NULL;
 120         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 121         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 122         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 123         int ret = 1;
 124         int accept_count = -1;
 125         int badarg = 0;
 126         int i;
 127         int ignore_err = 0;
 128         STACK *reqnames = NULL;
 129         STACK_OF(OCSP_CERTID) *ids = NULL;
 130
 131         X509 *rca_cert = NULL;
 132         char *ridx_filename = NULL;
 133         char *rca_filename = NULL;
 134         CA_DB *rdb = NULL;
 135         int nmin = 0, ndays = -1;
 136
 137         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 138
 139         if (!load_config(bio_err, NULL))
 140                 goto end;
 141         SSL_load_error_strings();
 142         args = argv + 1;
 143         reqnames = sk_new_null();
 144         ids = sk_OCSP_CERTID_new_null();
 145         while (!badarg && *args && *args[0] == '-')
 146                 {
 147                 if (!strcmp(*args, "-out"))
 148                         {
 149                         if (args[1])
 150                                 {
 151                                 args++;
 152                                 outfile = *args;
 153                                 }
 154                         else badarg = 1;
 155                         }
 156                 else if (!strcmp(*args, "-url"))
 157                         {
 158                         if (args[1])
 159                                 {
 160                                 args++;
 161                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 162                                         {
 163                                         BIO_printf(bio_err, "Error parsing URL\n");
 164                                         badarg = 1;
 165                                         }
 166                                 }
 167                         else badarg = 1;
 168                         }
 169                 else if (!strcmp(*args, "-host"))
 170                         {
 171                         if (args[1])
 172                                 {
 173                                 args++;
 174                                 host = *args;
 175                                 }
 176                         else badarg = 1;
 177                         }
 178                 else if (!strcmp(*args, "-port"))
 179                         {
 180                         if (args[1])
 181                                 {
 182                                 args++;
 183                                 port = *args;
 184                                 }
 185                         else badarg = 1;
 186                         }
 187                 else if (!strcmp(*args, "-ignore_err"))
 188                         ignore_err = 1;
 189                 else if (!strcmp(*args, "-noverify"))
 190                         noverify = 1;
 191                 else if (!strcmp(*args, "-nonce"))
 192                         add_nonce = 2;
 193                 else if (!strcmp(*args, "-no_nonce"))
 194                         add_nonce = 0;
 195                 else if (!strcmp(*args, "-resp_no_certs"))
 196                         rflags |= OCSP_NOCERTS;
 197                 else if (!strcmp(*args, "-resp_key_id"))
 198                         rflags |= OCSP_RESPID_KEY;
 199                 else if (!strcmp(*args, "-no_certs"))
 200                         sign_flags |= OCSP_NOCERTS;
 201                 else if (!strcmp(*args, "-no_signature_verify"))
 202                         verify_flags |= OCSP_NOSIGS;
 203                 else if (!strcmp(*args, "-no_cert_verify"))
 204                         verify_flags |= OCSP_NOVERIFY;
 205                 else if (!strcmp(*args, "-no_chain"))
 206                         verify_flags |= OCSP_NOCHAIN;
 207                 else if (!strcmp(*args, "-no_cert_checks"))
 208                         verify_flags |= OCSP_NOCHECKS;
 209                 else if (!strcmp(*args, "-no_explicit"))
 210                         verify_flags |= OCSP_NOEXPLICIT;
 211                 else if (!strcmp(*args, "-trust_other"))
 212                         verify_flags |= OCSP_TRUSTOTHER;
 213                 else if (!strcmp(*args, "-no_intern"))
 214                         verify_flags |= OCSP_NOINTERN;
 215                 else if (!strcmp(*args, "-text"))
 216                         {
 217                         req_text = 1;
 218                         resp_text = 1;
 219                         }
 220                 else if (!strcmp(*args, "-req_text"))
 221                         req_text = 1;
 222                 else if (!strcmp(*args, "-resp_text"))
 223                         resp_text = 1;
 224                 else if (!strcmp(*args, "-reqin"))
 225                         {
 226                         if (args[1])
 227                                 {
 228                                 args++;
 229                                 reqin = *args;
 230                                 }
 231                         else badarg = 1;
 232                         }
 233                 else if (!strcmp(*args, "-respin"))
 234                         {
 235                         if (args[1])
 236                                 {
 237                                 args++;
 238                                 respin = *args;
 239                                 }
 240                         else badarg = 1;
 241                         }
 242                 else if (!strcmp(*args, "-signer"))
 243                         {
 244                         if (args[1])
 245                                 {
 246                                 args++;
 247                                 signfile = *args;
 248                                 }
 249                         else badarg = 1;
 250                         }
 251                 else if (!strcmp (*args, "-VAfile"))
 252                         {
 253                         if (args[1])
 254                                 {
 255                                 args++;
 256                                 verify_certfile = *args;
 257                                 verify_flags |= OCSP_TRUSTOTHER;
 258                                 }
 259                         else badarg = 1;
 260                         }
 261                 else if (!strcmp(*args, "-sign_other"))
 262                         {
 263                         if (args[1])
 264                                 {
 265                                 args++;
 266                                 sign_certfile = *args;
 267                                 }
 268                         else badarg = 1;
 269                         }
 270                 else if (!strcmp(*args, "-verify_other"))
 271                         {
 272                         if (args[1])
 273                                 {
 274                                 args++;
 275                                 verify_certfile = *args;
 276                                 }
 277                         else badarg = 1;
 278                         }
 279                 else if (!strcmp (*args, "-CAfile"))
 280                         {
 281                         if (args[1])
 282                                 {
 283                                 args++;
 284                                 CAfile = *args;
 285                                 }
 286                         else badarg = 1;
 287                         }
 288                 else if (!strcmp (*args, "-CApath"))
 289                         {
 290                         if (args[1])
 291                                 {
 292                                 args++;
 293                                 CApath = *args;
 294                                 }
 295                         else badarg = 1;
 296                         }
 297                 else if (!strcmp (*args, "-validity_period"))
 298                         {
 299                         if (args[1])
 300                                 {
 301                                 args++;
 302                                 nsec = atol(*args);
 303                                 if (nsec < 0)
 304                                         {
 305                                         BIO_printf(bio_err,
 306                                                 "Illegal validity period %s\n",
 307                                                 *args);
 308                                         badarg = 1;
 309                                         }
 310                                 }
 311                         else badarg = 1;
 312                         }
 313                 else if (!strcmp (*args, "-status_age"))
 314                         {
 315                         if (args[1])
 316                                 {
 317                                 args++;
 318                                 maxage = atol(*args);
 319                                 if (maxage < 0)
 320                                         {
 321                                         BIO_printf(bio_err,
 322                                                 "Illegal validity age %s\n",
 323                                                 *args);
 324                                         badarg = 1;
 325                                         }
 326                                 }
 327                         else badarg = 1;
 328                         }
 329                  else if (!strcmp(*args, "-signkey"))
 330                         {
 331                         if (args[1])
 332                                 {
 333                                 args++;
 334                                 keyfile = *args;
 335                                 }
 336                         else badarg = 1;
 337                         }
 338                 else if (!strcmp(*args, "-reqout"))
 339                         {
 340                         if (args[1])
 341                                 {
 342                                 args++;
 343                                 reqout = *args;
 344                                 }
 345                         else badarg = 1;
 346                         }
 347                 else if (!strcmp(*args, "-respout"))
 348                         {
 349                         if (args[1])
 350                                 {
 351                                 args++;
 352                                 respout = *args;
 353                                 }
 354                         else badarg = 1;
 355                         }
 356                  else if (!strcmp(*args, "-path"))
 357                         {
 358                         if (args[1])
 359                                 {
 360                                 args++;
 361                                 path = *args;
 362                                 }
 363                         else badarg = 1;
 364                         }
 365                 else if (!strcmp(*args, "-issuer"))
 366                         {
 367                         if (args[1])
 368                                 {
 369                                 args++;
 370                                 X509_free(issuer);
 371                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 372                                         NULL, e, "issuer certificate");
 373                                 if(!issuer) goto end;
 374                                 }
 375                         else badarg = 1;
 376                         }
 377                 else if (!strcmp (*args, "-cert"))
 378                         {
 379                         if (args[1])
 380                                 {
 381                                 args++;
 382                                 X509_free(cert);
 383                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 384                                         NULL, e, "certificate");
 385                                 if(!cert) goto end;
 386                                 if(!add_ocsp_cert(&req, cert, issuer, ids))
 387                                         goto end;
 388                                 if(!sk_push(reqnames, *args))
 389                                         goto end;
 390                                 }
 391                         else badarg = 1;
 392                         }
 393                 else if (!strcmp(*args, "-serial"))
 394                         {
 395                         if (args[1])
 396                                 {
 397                                 args++;
 398                                 if(!add_ocsp_serial(&req, *args, issuer, ids))
 399                                         goto end;
 400                                 if(!sk_push(reqnames, *args))
 401                                         goto end;
 402                                 }
 403                         else badarg = 1;
 404                         }
 405                 else if (!strcmp(*args, "-index"))
 406                         {
 407                         if (args[1])
 408                                 {
 409                                 args++;
 410                                 ridx_filename = *args;
 411                                 }
 412                         else badarg = 1;
 413                         }
 414                 else if (!strcmp(*args, "-CA"))
 415                         {
 416                         if (args[1])
 417                                 {
 418                                 args++;
 419                                 rca_filename = *args;
 420                                 }
 421                         else badarg = 1;
 422                         }
 423                 else if (!strcmp (*args, "-nmin"))
 424                         {
 425                         if (args[1])
 426                                 {
 427                                 args++;
 428                                 nmin = atol(*args);
 429                                 if (nmin < 0)
 430                                         {
 431                                         BIO_printf(bio_err,
 432                                                 "Illegal update period %s\n",
 433                                                 *args);
 434                                         badarg = 1;
 435                                         }
 436                                 }
 437                                 if (ndays == -1)
 438                                         ndays = 0;
 439                         else badarg = 1;
 440                         }
 441                 else if (!strcmp (*args, "-nrequest"))
 442                         {
 443                         if (args[1])
 444                                 {
 445                                 args++;
 446                                 accept_count = atol(*args);
 447                                 if (accept_count < 0)
 448                                         {
 449                                         BIO_printf(bio_err,
 450                                                 "Illegal accept count %s\n",
 451                                                 *args);
 452                                         badarg = 1;
 453                                         }
 454                                 }
 455                         else badarg = 1;
 456                         }
 457                 else if (!strcmp (*args, "-ndays"))
 458                         {
 459                         if (args[1])
 460                                 {
 461                                 args++;
 462                                 ndays = atol(*args);
 463                                 if (ndays < 0)
 464                                         {
 465                                         BIO_printf(bio_err,
 466                                                 "Illegal update period %s\n",
 467                                                 *args);
 468                                         badarg = 1;
 469                                         }
 470                                 }
 471                         else badarg = 1;
 472                         }
 473                 else if (!strcmp(*args, "-rsigner"))
 474                         {
 475                         if (args[1])
 476                                 {
 477                                 args++;
 478                                 rsignfile = *args;
 479                                 }
 480                         else badarg = 1;
 481                         }
 482                 else if (!strcmp(*args, "-rkey"))
 483                         {
 484                         if (args[1])
 485                                 {
 486                                 args++;
 487                                 rkeyfile = *args;
 488                                 }
 489                         else badarg = 1;
 490                         }
 491                 else if (!strcmp(*args, "-rother"))
 492                         {
 493                         if (args[1])
 494                                 {
 495                                 args++;
 496                                 rcertfile = *args;
 497                                 }
 498                         else badarg = 1;
 499                         }
 500                 else badarg = 1;
 501                 args++;
 502                 }
 503
 504         /* Have we anything to do? */
 505         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 506
 507         if (badarg)
 508                 {
 509                 BIO_printf (bio_err, "OCSP utility\n");
 510                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 511                 BIO_printf (bio_err, "where options are\n");
 512                 BIO_printf (bio_err, "-out file          output filename\n");
 513                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 514                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 515                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 516                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 517                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 518                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 519                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 520                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 521                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 522                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 523                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 524                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 525                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 526                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 527                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 528                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 529                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 530                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 531                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 532                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 533                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 534                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 535                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 536                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 537                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 538                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 539                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 540                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 541                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 542                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 543                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 544                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 545                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 546                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 547                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 548                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 549                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 550                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 551                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 552                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 553                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 554                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 555                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 556                 goto end;
 557                 }
 558
 559         if(outfile) out = BIO_new_file(outfile, "w");
 560         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 561
 562         if(!out)
 563                 {
 564                 BIO_printf(bio_err, "Error opening output file\n");
 565                 goto end;
 566                 }
 567
 568         if (!req && (add_nonce != 2)) add_nonce = 0;
 569
 570         if (!req && reqin)
 571                 {
 572                 derbio = BIO_new_file(reqin, "rb");
 573                 if (!derbio)
 574                         {
 575                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 576                         goto end;
 577                         }
 578                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 579                 BIO_free(derbio);
 580                 if(!req)
 581                         {
 582                         BIO_printf(bio_err, "Error reading OCSP request\n");
 583                         goto end;
 584                         }
 585                 }
 586
 587         if (!req && port)
 588                 {
 589                 acbio = init_responder(port);
 590                 if (!acbio)
 591                         goto end;
 592                 }
 593
 594         if (rsignfile && !rdb)
 595                 {
 596                 if (!rkeyfile) rkeyfile = rsignfile;
 597                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 598                         NULL, e, "responder certificate");
 599                 if (!rsigner)
 600                         {
 601                         BIO_printf(bio_err, "Error loading responder certificate\n");
 602                         goto end;
 603                         }
 604                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 605                         NULL, e, "CA certificate");
 606                 if (rcertfile)
 607                         {
 608                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 609                                 NULL, e, "responder other certificates");
 610                         if (!rother) goto end;
 611                         }
 612                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 613                         "responder private key");
 614                 if (!rkey)
 615                         goto end;
 616                 }
 617         if(acbio)
 618                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 619
 620         redo_accept:
 621
 622         if (acbio)
 623                 {
 624                 if (!do_responder(&req, &cbio, acbio, port))
 625                         goto end;
 626                 if (!req)
 627                         {
 628                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 629                         send_ocsp_response(cbio, resp);
 630                         goto done_resp;
 631                         }
 632                 }
 633
 634         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 635                 {
 636                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 637                 goto end;
 638                 }
 639
 640         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 641
 642         if (signfile)
 643                 {
 644                 if (!keyfile) keyfile = signfile;
 645                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 646                         NULL, e, "signer certificate");
 647                 if (!signer)
 648                         {
 649                         BIO_printf(bio_err, "Error loading signer certificate\n");
 650                         goto end;
 651                         }
 652                 if (sign_certfile)
 653                         {
 654                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 655                                 NULL, e, "signer certificates");
 656                         if (!sign_other) goto end;
 657                         }
 658                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 659                         "signer private key");
 660                 if (!key)
 661                         goto end;
 662                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
 663                         {
 664                         BIO_printf(bio_err, "Error signing OCSP request\n");
 665                         goto end;
 666                         }
 667                 }
 668
 669         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 670
 671         if (reqout)
 672                 {
 673                 derbio = BIO_new_file(reqout, "wb");
 674                 if(!derbio)
 675                         {
 676                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 677                         goto end;
 678                         }
 679                 i2d_OCSP_REQUEST_bio(derbio, req);
 680                 BIO_free(derbio);
 681                 }
 682
 683         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 684                 {
 685                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 686                 goto end;
 687                 }
 688
 689         if (ridx_filename && !rdb)
 690                 {
 691                 rdb = load_index(ridx_filename, NULL);
 692                 if (!rdb) goto end;
 693                 if (!index_index(rdb)) goto end;
 694                 }
 695
 696         if (rdb)
 697                 {
 698                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
 699                 if (cbio)
 700                         send_ocsp_response(cbio, resp);
 701                 }
 702         else if (host)
 703                 {
 704 #ifndef OPENSSL_NO_SOCK
 705                 cbio = BIO_new_connect(host);
 706 #else
 707                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 708                 goto end;
 709 #endif
 710                 if (!cbio)
 711                         {
 712                         BIO_printf(bio_err, "Error creating connect BIO\n");
 713                         goto end;
 714                         }
 715                 if (port) BIO_set_conn_port(cbio, port);
 716                 if (use_ssl == 1)
 717                         {
 718                         BIO *sbio;
 719 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 720                         ctx = SSL_CTX_new(SSLv23_client_method());
 721 #elif !defined(OPENSSL_NO_SSL3)
 722                         ctx = SSL_CTX_new(SSLv3_client_method());
 723 #elif !defined(OPENSSL_NO_SSL2)
 724                         ctx = SSL_CTX_new(SSLv2_client_method());
 725 #else
 726                         BIO_printf(bio_err, "SSL is disabled\n");
 727                         goto end;
 728 #endif
 729                         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
 730                         sbio = BIO_new_ssl(ctx, 1);
 731                         cbio = BIO_push(sbio, cbio);
 732                         }
 733                 if (BIO_do_connect(cbio) <= 0)
 734                         {
 735                         BIO_printf(bio_err, "Error connecting BIO\n");
 736                         goto end;
 737                         }
 738                 resp = OCSP_sendreq_bio(cbio, path, req);
 739                 BIO_free_all(cbio);
 740                 cbio = NULL;
 741                 if (!resp)
 742                         {
 743                         BIO_printf(bio_err, "Error querying OCSP responsder\n");
 744                         goto end;
 745                         }
 746                 }
 747         else if (respin)
 748                 {
 749                 derbio = BIO_new_file(respin, "rb");
 750                 if (!derbio)
 751                         {
 752                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 753                         goto end;
 754                         }
 755                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 756                 BIO_free(derbio);
 757                 if(!resp)
 758                         {
 759                         BIO_printf(bio_err, "Error reading OCSP response\n");
 760                         goto end;
 761                         }
 762
 763                 }
 764         else
 765                 {
 766                 ret = 0;
 767                 goto end;
 768                 }
 769
 770         done_resp:
 771
 772         if (respout)
 773                 {
 774                 derbio = BIO_new_file(respout, "wb");
 775                 if(!derbio)
 776                         {
 777                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 778                         goto end;
 779                         }
 780                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 781                 BIO_free(derbio);
 782                 }
 783
 784         i = OCSP_response_status(resp);
 785
 786         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 787                 {
 788                 BIO_printf(out, "Responder Error: %s (%d)\n",
 789                                 OCSP_response_status_str(i), i);
 790                 if (ignore_err)
 791                         goto redo_accept;
 792                 ret = 0;
 793                 goto end;
 794                 }
 795
 796         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 797
 798         /* If running as responder don't verify our own response */
 799         if (cbio)
 800                 {
 801                 if (accept_count > 0)
 802                         accept_count--;
 803                 /* Redo if more connections needed */
 804                 if (accept_count)
 805                         {
 806                         BIO_free_all(cbio);
 807                         cbio = NULL;
 808                         OCSP_REQUEST_free(req);
 809                         req = NULL;
 810                         OCSP_RESPONSE_free(resp);
 811                         resp = NULL;
 812                         goto redo_accept;
 813                         }
 814                 goto end;
 815                 }
 816
 817         if (!store)
 818                 store = setup_verify(bio_err, CAfile, CApath);
 819         if (!store)
 820                 goto end;
 821         if (verify_certfile)
 822                 {
 823                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 824                         NULL, e, "validator certificate");
 825                 if (!verify_other) goto end;
 826                 }
 827
 828         bs = OCSP_response_get1_basic(resp);
 829
 830         if (!bs)
 831                 {
 832                 BIO_printf(bio_err, "Error parsing response\n");
 833                 goto end;
 834                 }
 835
 836         if (!noverify)
 837                 {
 838                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 839                         {
 840                         if (i == -1)
 841                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 842                         else
 843                                 {
 844                                 BIO_printf(bio_err, "Nonce Verify error\n");
 845                                 goto end;
 846                                 }
 847                         }
 848
 849                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 850                 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
 851
 852                 if(i <= 0)
 853                         {
 854                         BIO_printf(bio_err, "Response Verify Failure\n");
 855                         ERR_print_errors(bio_err);
 856                         }
 857                 else
 858                         BIO_printf(bio_err, "Response verify OK\n");
 859
 860                 }
 861
 862         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 863                 goto end;
 864
 865         ret = 0;
 866
 867 end:
 868         ERR_print_errors(bio_err);
 869         X509_free(signer);
 870         X509_STORE_free(store);
 871         EVP_PKEY_free(key);
 872         EVP_PKEY_free(rkey);
 873         X509_free(issuer);
 874         X509_free(cert);
 875         X509_free(rsigner);
 876         X509_free(rca_cert);
 877         free_index(rdb);
 878         BIO_free_all(cbio);
 879         BIO_free_all(acbio);
 880         BIO_free(out);
 881         OCSP_REQUEST_free(req);
 882         OCSP_RESPONSE_free(resp);
 883         OCSP_BASICRESP_free(bs);
 884         sk_free(reqnames);
 885         sk_OCSP_CERTID_free(ids);
 886         sk_X509_pop_free(sign_other, X509_free);
 887         sk_X509_pop_free(verify_other, X509_free);
 888
 889         if (use_ssl != -1)
 890                 {
 891                 OPENSSL_free(host);
 892                 OPENSSL_free(port);
 893                 OPENSSL_free(path);
 894                 SSL_CTX_free(ctx);
 895                 }
 896
 897         OPENSSL_EXIT(ret);
 898 }
 899
 900 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
 901                                 STACK_OF(OCSP_CERTID) *ids)
 902         {
 903         OCSP_CERTID *id;
 904         if(!issuer)
 905                 {
 906                 BIO_printf(bio_err, "No issuer certificate specified\n");
 907                 return 0;
 908                 }
 909         if(!*req) *req = OCSP_REQUEST_new();
 910         if(!*req) goto err;
 911         id = OCSP_cert_to_id(NULL, cert, issuer);
 912         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 913         if(!OCSP_request_add0_id(*req, id)) goto err;
 914         return 1;
 915
 916         err:
 917         BIO_printf(bio_err, "Error Creating OCSP request\n");
 918         return 0;
 919         }
 920
 921 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
 922                                 STACK_OF(OCSP_CERTID) *ids)
 923         {
 924         OCSP_CERTID *id;
 925         X509_NAME *iname;
 926         ASN1_BIT_STRING *ikey;
 927         ASN1_INTEGER *sno;
 928         if(!issuer)
 929                 {
 930                 BIO_printf(bio_err, "No issuer certificate specified\n");
 931                 return 0;
 932                 }
 933         if(!*req) *req = OCSP_REQUEST_new();
 934         if(!*req) goto err;
 935         iname = X509_get_subject_name(issuer);
 936         ikey = X509_get0_pubkey_bitstr(issuer);
 937         sno = s2i_ASN1_INTEGER(NULL, serial);
 938         if(!sno)
 939                 {
 940                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 941                 return 0;
 942                 }
 943         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
 944         ASN1_INTEGER_free(sno);
 945         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 946         if(!OCSP_request_add0_id(*req, id)) goto err;
 947         return 1;
 948
 949         err:
 950         BIO_printf(bio_err, "Error Creating OCSP request\n");
 951         return 0;
 952         }
 953
 954 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 955                                         STACK *names, STACK_OF(OCSP_CERTID) *ids,
 956                                         long nsec, long maxage)
 957         {
 958         OCSP_CERTID *id;
 959         char *name;
 960         int i;
 961
 962         int status, reason;
 963
 964         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 965
 966         if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
 967                 return 1;
 968
 969         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
 970                 {
 971                 id = sk_OCSP_CERTID_value(ids, i);
 972                 name = sk_value(names, i);
 973                 BIO_printf(out, "%s: ", name);
 974
 975                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
 976                                         &rev, &thisupd, &nextupd))
 977                         {
 978                         BIO_puts(out, "ERROR: No Status found.\n");
 979                         continue;
 980                         }
 981
 982                 /* Check validity: if invalid write to output BIO so we
 983                  * know which response this refers to.
 984                  */
 985                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
 986                         {
 987                         BIO_puts(out, "WARNING: Status times invalid.\n");
 988                         ERR_print_errors(out);
 989                         }
 990                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 991
 992                 BIO_puts(out, "\tThis Update: ");
 993                 ASN1_GENERALIZEDTIME_print(out, thisupd);
 994                 BIO_puts(out, "\n");
 995
 996                 if(nextupd)
 997                         {
 998                         BIO_puts(out, "\tNext Update: ");
 999                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1000                         BIO_puts(out, "\n");
1001                         }
1002
1003                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1004                         continue;
1005
1006                 if (reason != -1)
1007                         BIO_printf(out, "\tReason: %s\n",
1008                                 OCSP_crl_reason_str(reason));
1009
1010                 BIO_puts(out, "\tRevocation Time: ");
1011                 ASN1_GENERALIZEDTIME_print(out, rev);
1012                 BIO_puts(out, "\n");
1013                 }
1014
1015         return 1;
1016         }
1017
1018
1019 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1020                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1021                         STACK_OF(X509) *rother, unsigned long flags,
1022                         int nmin, int ndays)
1023         {
1024         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1025         OCSP_CERTID *cid, *ca_id = NULL;
1026         OCSP_BASICRESP *bs = NULL;
1027         int i, id_count, ret = 1;
1028
1029
1030         id_count = OCSP_request_onereq_count(req);
1031
1032         if (id_count <= 0)
1033                 {
1034                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1035                 goto end;
1036                 }
1037
1038         ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
1039
1040         bs = OCSP_BASICRESP_new();
1041         thisupd = X509_gmtime_adj(NULL, 0);
1042         if (ndays != -1)
1043                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1044
1045         /* Examine each certificate id in the request */
1046         for (i = 0; i < id_count; i++)
1047                 {
1048                 OCSP_ONEREQ *one;
1049                 ASN1_INTEGER *serial;
1050                 char **inf;
1051                 one = OCSP_request_onereq_get0(req, i);
1052                 cid = OCSP_onereq_get0_id(one);
1053                 /* Is this request about our CA? */
1054                 if (OCSP_id_issuer_cmp(ca_id, cid))
1055                         {
1056                         OCSP_basic_add1_status(bs, cid,
1057                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1058                                                 0, NULL,
1059                                                 thisupd, nextupd);
1060                         continue;
1061                         }
1062                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1063                 inf = lookup_serial(db, serial);
1064                 if (!inf)
1065                         OCSP_basic_add1_status(bs, cid,
1066                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1067                                                 0, NULL,
1068                                                 thisupd, nextupd);
1069                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1070                         OCSP_basic_add1_status(bs, cid,
1071                                                 V_OCSP_CERTSTATUS_GOOD,
1072                                                 0, NULL,
1073                                                 thisupd, nextupd);
1074                 else if (inf[DB_type][0] == DB_TYPE_REV)
1075                         {
1076                         ASN1_OBJECT *inst = NULL;
1077                         ASN1_TIME *revtm = NULL;
1078                         ASN1_GENERALIZEDTIME *invtm = NULL;
1079                         OCSP_SINGLERESP *single;
1080                         int reason = -1;
1081                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1082                         single = OCSP_basic_add1_status(bs, cid,
1083                                                 V_OCSP_CERTSTATUS_REVOKED,
1084                                                 reason, revtm,
1085                                                 thisupd, nextupd);
1086                         if (invtm)
1087                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1088                         else if (inst)
1089                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1090                         ASN1_OBJECT_free(inst);
1091                         ASN1_TIME_free(revtm);
1092                         ASN1_GENERALIZEDTIME_free(invtm);
1093                         }
1094                 }
1095
1096         OCSP_copy_nonce(bs, req);
1097
1098         OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
1099
1100         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1101
1102         end:
1103         ASN1_TIME_free(thisupd);
1104         ASN1_TIME_free(nextupd);
1105         OCSP_CERTID_free(ca_id);
1106         OCSP_BASICRESP_free(bs);
1107         return ret;
1108
1109         }
1110
1111 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1112         {
1113         int i;
1114         BIGNUM *bn = NULL;
1115         char *itmp, *row[DB_NUMBER],**rrow;
1116         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1117         bn = ASN1_INTEGER_to_BN(ser,NULL);
1118         if (BN_is_zero(bn))
1119                 itmp = BUF_strdup("00");
1120         else
1121                 itmp = BN_bn2hex(bn);
1122         row[DB_serial] = itmp;
1123         BN_free(bn);
1124         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1125         OPENSSL_free(itmp);
1126         return rrow;
1127         }
1128
1129 /* Quick and dirty OCSP server: read in and parse input request */
1130
1131 static BIO *init_responder(char *port)
1132         {
1133         BIO *acbio = NULL, *bufbio = NULL;
1134         bufbio = BIO_new(BIO_f_buffer());
1135         if (!bufbio)
1136                 goto err;
1137 #ifndef OPENSSL_NO_SOCK
1138         acbio = BIO_new_accept(port);
1139 #else
1140         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1141 #endif
1142         if (!acbio)
1143                 goto err;
1144         BIO_set_accept_bios(acbio, bufbio);
1145         bufbio = NULL;
1146
1147         if (BIO_do_accept(acbio) <= 0)
1148                 {
1149                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1150                         ERR_print_errors(bio_err);
1151                         goto err;
1152                 }
1153
1154         return acbio;
1155
1156         err:
1157         BIO_free_all(acbio);
1158         BIO_free(bufbio);
1159         return NULL;
1160         }
1161
1162 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1163         {
1164         int have_post = 0, len;
1165         OCSP_REQUEST *req = NULL;
1166         char inbuf[1024];
1167         BIO *cbio = NULL;
1168
1169         if (BIO_do_accept(acbio) <= 0)
1170                 {
1171                         BIO_printf(bio_err, "Error accepting connection\n");
1172                         ERR_print_errors(bio_err);
1173                         return 0;
1174                 }
1175
1176         cbio = BIO_pop(acbio);
1177         *pcbio = cbio;
1178
1179         for(;;)
1180                 {
1181                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1182                 if (len <= 0)
1183                         return 1;
1184                 /* Look for "POST" signalling start of query */
1185                 if (!have_post)
1186                         {
1187                         if(strncmp(inbuf, "POST", 4))
1188                                 {
1189                                 BIO_printf(bio_err, "Invalid request\n");
1190                                 return 1;
1191                                 }
1192                         have_post = 1;
1193                         }
1194                 /* Look for end of headers */
1195                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1196                         break;
1197                 }
1198
1199         /* Try to read OCSP request */
1200
1201         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1202
1203         if (!req)
1204                 {
1205                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1206                 ERR_print_errors(bio_err);
1207                 }
1208
1209         *preq = req;
1210
1211         return 1;
1212
1213         }
1214
1215 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1216         {
1217         char http_resp[] =
1218                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1219                 "Content-Length: %d\r\n\r\n";
1220         if (!cbio)
1221                 return 0;
1222         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1223         i2d_OCSP_RESPONSE_bio(cbio, resp);
1224         BIO_flush(cbio);
1225         return 1;
1226         }
1227
1228 #endif