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