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