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