userapps/opensource/openssl/apps/ocsp.c

   1 /* ocsp.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 #ifndef OPENSSL_NO_OCSP
  59
  60 #include <stdio.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/pem.h>
  64 #include <openssl/ocsp.h>
  65 #include <openssl/err.h>
  66 #include <openssl/ssl.h>
  67
  68 /* Maximum leeway in validity period: default 5 minutes */
  69 #define MAX_VALIDITY_PERIOD     (5 * 60)
  70
  71 /* CA index.txt definitions */
  72 #define DB_type         0
  73 #define DB_exp_date     1
  74 #define DB_rev_date     2
  75 #define DB_serial       3       /* index - unique */
  76 #define DB_file         4
  77 #define DB_name         5       /* index - unique for active */
  78 #define DB_NUMBER       6
  79
  80 #define DB_TYPE_REV     'R'
  81 #define DB_TYPE_EXP     'E'
  82 #define DB_TYPE_VAL     'V'
  83
  84 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
  85                                 STACK_OF(OCSP_CERTID) *ids);
  86 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
  87                                 STACK_OF(OCSP_CERTID) *ids);
  88 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  89                                 STACK *names, STACK_OF(OCSP_CERTID) *ids,
  90                                 long nsec, long maxage);
  91
  92 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, TXT_DB *db,
  93                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
  94                         STACK_OF(X509) *rother, unsigned long flags,
  95                         int nmin, int ndays);
  96
  97 static char **lookup_serial(TXT_DB *db, ASN1_INTEGER *ser);
  98 static BIO *init_responder(char *port);
  99 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
 100 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
 101
 102 #undef PROG
 103 #define PROG ocsp_main
 104
 105 int MAIN(int, char **);
 106
 107 int MAIN(int argc, char **argv)
 108         {
 109         ENGINE *e = NULL;
 110         char **args;
 111         char *host = NULL, *port = NULL, *path = "/";
 112         char *reqin = NULL, *respin = NULL;
 113         char *reqout = NULL, *respout = NULL;
 114         char *signfile = NULL, *keyfile = NULL;
 115         char *rsignfile = NULL, *rkeyfile = NULL;
 116         char *outfile = NULL;
 117         int add_nonce = 1, noverify = 0, use_ssl = -1;
 118         OCSP_REQUEST *req = NULL;
 119         OCSP_RESPONSE *resp = NULL;
 120         OCSP_BASICRESP *bs = NULL;
 121         X509 *issuer = NULL, *cert = NULL;
 122         X509 *signer = NULL, *rsigner = NULL;
 123         EVP_PKEY *key = NULL, *rkey = NULL;
 124         BIO *acbio = NULL, *cbio = NULL;
 125         BIO *derbio = NULL;
 126         BIO *out = NULL;
 127         int req_text = 0, resp_text = 0;
 128         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 129         char *CAfile = NULL, *CApath = NULL;
 130         X509_STORE *store = NULL;
 131         SSL_CTX *ctx = NULL;
 132         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 133         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 134         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 135         int ret = 1;
 136         int accept_count = -1;
 137         int badarg = 0;
 138         int i;
 139         int ignore_err = 0;
 140         STACK *reqnames = NULL;
 141         STACK_OF(OCSP_CERTID) *ids = NULL;
 142
 143         X509 *rca_cert = NULL;
 144         char *ridx_filename = NULL;
 145         char *rca_filename = NULL;
 146         TXT_DB *rdb = NULL;
 147         int nmin = 0, ndays = -1;
 148
 149         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 150
 151         if (!load_config(bio_err, NULL))
 152                 goto end;
 153         SSL_load_error_strings();
 154         args = argv + 1;
 155         reqnames = sk_new_null();
 156         ids = sk_OCSP_CERTID_new_null();
 157         while (!badarg && *args && *args[0] == '-')
 158                 {
 159                 if (!strcmp(*args, "-out"))
 160                         {
 161                         if (args[1])
 162                                 {
 163                                 args++;
 164                                 outfile = *args;
 165                                 }
 166                         else badarg = 1;
 167                         }
 168                 else if (!strcmp(*args, "-url"))
 169                         {
 170                         if (args[1])
 171                                 {
 172                                 args++;
 173                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
 174                                         {
 175                                         BIO_printf(bio_err, "Error parsing URL\n");
 176                                         badarg = 1;
 177                                         }
 178                                 }
 179                         else badarg = 1;
 180                         }
 181                 else if (!strcmp(*args, "-host"))
 182                         {
 183                         if (args[1])
 184                                 {
 185                                 args++;
 186                                 host = *args;
 187                                 }
 188                         else badarg = 1;
 189                         }
 190                 else if (!strcmp(*args, "-port"))
 191                         {
 192                         if (args[1])
 193                                 {
 194                                 args++;
 195                                 port = *args;
 196                                 }
 197                         else badarg = 1;
 198                         }
 199                 else if (!strcmp(*args, "-ignore_err"))
 200                         ignore_err = 1;
 201                 else if (!strcmp(*args, "-noverify"))
 202                         noverify = 1;
 203                 else if (!strcmp(*args, "-nonce"))
 204                         add_nonce = 2;
 205                 else if (!strcmp(*args, "-no_nonce"))
 206                         add_nonce = 0;
 207                 else if (!strcmp(*args, "-resp_no_certs"))
 208                         rflags |= OCSP_NOCERTS;
 209                 else if (!strcmp(*args, "-resp_key_id"))
 210                         rflags |= OCSP_RESPID_KEY;
 211                 else if (!strcmp(*args, "-no_certs"))
 212                         sign_flags |= OCSP_NOCERTS;
 213                 else if (!strcmp(*args, "-no_signature_verify"))
 214                         verify_flags |= OCSP_NOSIGS;
 215                 else if (!strcmp(*args, "-no_cert_verify"))
 216                         verify_flags |= OCSP_NOVERIFY;
 217                 else if (!strcmp(*args, "-no_chain"))
 218                         verify_flags |= OCSP_NOCHAIN;
 219                 else if (!strcmp(*args, "-no_cert_checks"))
 220                         verify_flags |= OCSP_NOCHECKS;
 221                 else if (!strcmp(*args, "-no_explicit"))
 222                         verify_flags |= OCSP_NOEXPLICIT;
 223                 else if (!strcmp(*args, "-trust_other"))
 224                         verify_flags |= OCSP_TRUSTOTHER;
 225                 else if (!strcmp(*args, "-no_intern"))
 226                         verify_flags |= OCSP_NOINTERN;
 227                 else if (!strcmp(*args, "-text"))
 228                         {
 229                         req_text = 1;
 230                         resp_text = 1;
 231                         }
 232                 else if (!strcmp(*args, "-req_text"))
 233                         req_text = 1;
 234                 else if (!strcmp(*args, "-resp_text"))
 235                         resp_text = 1;
 236                 else if (!strcmp(*args, "-reqin"))
 237                         {
 238                         if (args[1])
 239                                 {
 240                                 args++;
 241                                 reqin = *args;
 242                                 }
 243                         else badarg = 1;
 244                         }
 245                 else if (!strcmp(*args, "-respin"))
 246                         {
 247                         if (args[1])
 248                                 {
 249                                 args++;
 250                                 respin = *args;
 251                                 }
 252                         else badarg = 1;
 253                         }
 254                 else if (!strcmp(*args, "-signer"))
 255                         {
 256                         if (args[1])
 257                                 {
 258                                 args++;
 259                                 signfile = *args;
 260                                 }
 261                         else badarg = 1;
 262                         }
 263                 else if (!strcmp (*args, "-VAfile"))
 264                         {
 265                         if (args[1])
 266                                 {
 267                                 args++;
 268                                 verify_certfile = *args;
 269                                 verify_flags |= OCSP_TRUSTOTHER;
 270                                 }
 271                         else badarg = 1;
 272                         }
 273                 else if (!strcmp(*args, "-sign_other"))
 274                         {
 275                         if (args[1])
 276                                 {
 277                                 args++;
 278                                 sign_certfile = *args;
 279                                 }
 280                         else badarg = 1;
 281                         }
 282                 else if (!strcmp(*args, "-verify_other"))
 283                         {
 284                         if (args[1])
 285                                 {
 286                                 args++;
 287                                 verify_certfile = *args;
 288                                 }
 289                         else badarg = 1;
 290                         }
 291                 else if (!strcmp (*args, "-CAfile"))
 292                         {
 293                         if (args[1])
 294                                 {
 295                                 args++;
 296                                 CAfile = *args;
 297                                 }
 298                         else badarg = 1;
 299                         }
 300                 else if (!strcmp (*args, "-CApath"))
 301                         {
 302                         if (args[1])
 303                                 {
 304                                 args++;
 305                                 CApath = *args;
 306                                 }
 307                         else badarg = 1;
 308                         }
 309                 else if (!strcmp (*args, "-validity_period"))
 310                         {
 311                         if (args[1])
 312                                 {
 313                                 args++;
 314                                 nsec = atol(*args);
 315                                 if (nsec < 0)
 316                                         {
 317                                         BIO_printf(bio_err,
 318                                                 "Illegal validity period %s\n",
 319                                                 *args);
 320                                         badarg = 1;
 321                                         }
 322                                 }
 323                         else badarg = 1;
 324                         }
 325                 else if (!strcmp (*args, "-status_age"))
 326                         {
 327                         if (args[1])
 328                                 {
 329                                 args++;
 330                                 maxage = atol(*args);
 331                                 if (maxage < 0)
 332                                         {
 333                                         BIO_printf(bio_err,
 334                                                 "Illegal validity age %s\n",
 335                                                 *args);
 336                                         badarg = 1;
 337                                         }
 338                                 }
 339                         else badarg = 1;
 340                         }
 341                  else if (!strcmp(*args, "-signkey"))
 342                         {
 343                         if (args[1])
 344                                 {
 345                                 args++;
 346                                 keyfile = *args;
 347                                 }
 348                         else badarg = 1;
 349                         }
 350                 else if (!strcmp(*args, "-reqout"))
 351                         {
 352                         if (args[1])
 353                                 {
 354                                 args++;
 355                                 reqout = *args;
 356                                 }
 357                         else badarg = 1;
 358                         }
 359                 else if (!strcmp(*args, "-respout"))
 360                         {
 361                         if (args[1])
 362                                 {
 363                                 args++;
 364                                 respout = *args;
 365                                 }
 366                         else badarg = 1;
 367                         }
 368                  else if (!strcmp(*args, "-path"))
 369                         {
 370                         if (args[1])
 371                                 {
 372                                 args++;
 373                                 path = *args;
 374                                 }
 375                         else badarg = 1;
 376                         }
 377                 else if (!strcmp(*args, "-issuer"))
 378                         {
 379                         if (args[1])
 380                                 {
 381                                 args++;
 382                                 X509_free(issuer);
 383                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
 384                                         NULL, e, "issuer certificate");
 385                                 if(!issuer) goto end;
 386                                 }
 387                         else badarg = 1;
 388                         }
 389                 else if (!strcmp (*args, "-cert"))
 390                         {
 391                         if (args[1])
 392                                 {
 393                                 args++;
 394                                 X509_free(cert);
 395                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
 396                                         NULL, e, "certificate");
 397                                 if(!cert) goto end;
 398                                 if(!add_ocsp_cert(&req, cert, issuer, ids))
 399                                         goto end;
 400                                 if(!sk_push(reqnames, *args))
 401                                         goto end;
 402                                 }
 403                         else badarg = 1;
 404                         }
 405                 else if (!strcmp(*args, "-serial"))
 406                         {
 407                         if (args[1])
 408                                 {
 409                                 args++;
 410                                 if(!add_ocsp_serial(&req, *args, issuer, ids))
 411                                         goto end;
 412                                 if(!sk_push(reqnames, *args))
 413                                         goto end;
 414                                 }
 415                         else badarg = 1;
 416                         }
 417                 else if (!strcmp(*args, "-index"))
 418                         {
 419                         if (args[1])
 420                                 {
 421                                 args++;
 422                                 ridx_filename = *args;
 423                                 }
 424                         else badarg = 1;
 425                         }
 426                 else if (!strcmp(*args, "-CA"))
 427                         {
 428                         if (args[1])
 429                                 {
 430                                 args++;
 431                                 rca_filename = *args;
 432                                 }
 433                         else badarg = 1;
 434                         }
 435                 else if (!strcmp (*args, "-nmin"))
 436                         {
 437                         if (args[1])
 438                                 {
 439                                 args++;
 440                                 nmin = atol(*args);
 441                                 if (nmin < 0)
 442                                         {
 443                                         BIO_printf(bio_err,
 444                                                 "Illegal update period %s\n",
 445                                                 *args);
 446                                         badarg = 1;
 447                                         }
 448                                 }
 449                                 if (ndays == -1)
 450                                         ndays = 0;
 451                         else badarg = 1;
 452                         }
 453                 else if (!strcmp (*args, "-nrequest"))
 454                         {
 455                         if (args[1])
 456                                 {
 457                                 args++;
 458                                 accept_count = atol(*args);
 459                                 if (accept_count < 0)
 460                                         {
 461                                         BIO_printf(bio_err,
 462                                                 "Illegal accept count %s\n",
 463                                                 *args);
 464                                         badarg = 1;
 465                                         }
 466                                 }
 467                         else badarg = 1;
 468                         }
 469                 else if (!strcmp (*args, "-ndays"))
 470                         {
 471                         if (args[1])
 472                                 {
 473                                 args++;
 474                                 ndays = atol(*args);
 475                                 if (ndays < 0)
 476                                         {
 477                                         BIO_printf(bio_err,
 478                                                 "Illegal update period %s\n",
 479                                                 *args);
 480                                         badarg = 1;
 481                                         }
 482                                 }
 483                         else badarg = 1;
 484                         }
 485                 else if (!strcmp(*args, "-rsigner"))
 486                         {
 487                         if (args[1])
 488                                 {
 489                                 args++;
 490                                 rsignfile = *args;
 491                                 }
 492                         else badarg = 1;
 493                         }
 494                 else if (!strcmp(*args, "-rkey"))
 495                         {
 496                         if (args[1])
 497                                 {
 498                                 args++;
 499                                 rkeyfile = *args;
 500                                 }
 501                         else badarg = 1;
 502                         }
 503                 else if (!strcmp(*args, "-rother"))
 504                         {
 505                         if (args[1])
 506                                 {
 507                                 args++;
 508                                 rcertfile = *args;
 509                                 }
 510                         else badarg = 1;
 511                         }
 512                 else badarg = 1;
 513                 args++;
 514                 }
 515
 516         /* Have we anything to do? */
 517         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
 518
 519         if (badarg)
 520                 {
 521                 BIO_printf (bio_err, "OCSP utility\n");
 522                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 523                 BIO_printf (bio_err, "where options are\n");
 524                 BIO_printf (bio_err, "-out file          output filename\n");
 525                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
 526                 BIO_printf (bio_err, "-cert file         certificate to check\n");
 527                 BIO_printf (bio_err, "-serial n          serial number to check\n");
 528                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
 529                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
 530                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
 531                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
 532                 BIO_printf (bio_err, "-req_text          print text form of request\n");
 533                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
 534                 BIO_printf (bio_err, "-text              print text form of request and response\n");
 535                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
 536                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
 537                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
 538                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
 539                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
 540                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
 541                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
 542                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
 543                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
 544                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
 545                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
 546                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
 547                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
 548                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
 549                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
 550                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
 551                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
 552                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
 553                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
 554                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
 555                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
 556                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
 557                 BIO_printf (bio_err, "-port num          port to run responder on\n");
 558                 BIO_printf (bio_err, "-index file        certificate status index file\n");
 559                 BIO_printf (bio_err, "-CA file           CA certificate\n");
 560                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
 561                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
 562                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
 563                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
 564                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
 565                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
 566                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
 567                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
 568                 goto end;
 569                 }
 570
 571         if(outfile) out = BIO_new_file(outfile, "w");
 572         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 573
 574         if(!out)
 575                 {
 576                 BIO_printf(bio_err, "Error opening output file\n");
 577                 goto end;
 578                 }
 579
 580         if (!req && (add_nonce != 2)) add_nonce = 0;
 581
 582         if (!req && reqin)
 583                 {
 584                 derbio = BIO_new_file(reqin, "rb");
 585                 if (!derbio)
 586                         {
 587                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 588                         goto end;
 589                         }
 590                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 591                 BIO_free(derbio);
 592                 if(!req)
 593                         {
 594                         BIO_printf(bio_err, "Error reading OCSP request\n");
 595                         goto end;
 596                         }
 597                 }
 598
 599         if (!req && port)
 600                 {
 601                 acbio = init_responder(port);
 602                 if (!acbio)
 603                         goto end;
 604                 }
 605
 606         if (rsignfile && !rdb)
 607                 {
 608                 if (!rkeyfile) rkeyfile = rsignfile;
 609                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
 610                         NULL, e, "responder certificate");
 611                 if (!rsigner)
 612                         {
 613                         BIO_printf(bio_err, "Error loading responder certificate\n");
 614                         goto end;
 615                         }
 616                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
 617                         NULL, e, "CA certificate");
 618                 if (rcertfile)
 619                         {
 620                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
 621                                 NULL, e, "responder other certificates");
 622                         if (!rother) goto end;
 623                         }
 624                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 625                         "responder private key");
 626                 if (!rkey)
 627                         goto end;
 628                 }
 629         if(acbio)
 630                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 631
 632         redo_accept:
 633
 634         if (acbio)
 635                 {
 636                 if (!do_responder(&req, &cbio, acbio, port))
 637                         goto end;
 638                 if (!req)
 639                         {
 640                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 641                         send_ocsp_response(cbio, resp);
 642                         goto done_resp;
 643                         }
 644                 }
 645
 646         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
 647                 {
 648                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 649                 goto end;
 650                 }
 651
 652         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 653
 654         if (signfile)
 655                 {
 656                 if (!keyfile) keyfile = signfile;
 657                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
 658                         NULL, e, "signer certificate");
 659                 if (!signer)
 660                         {
 661                         BIO_printf(bio_err, "Error loading signer certificate\n");
 662                         goto end;
 663                         }
 664                 if (sign_certfile)
 665                         {
 666                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
 667                                 NULL, e, "signer certificates");
 668                         if (!sign_other) goto end;
 669                         }
 670                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
 671                         "signer private key");
 672                 if (!key)
 673                         goto end;
 674                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
 675                         {
 676                         BIO_printf(bio_err, "Error signing OCSP request\n");
 677                         goto end;
 678                         }
 679                 }
 680
 681         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 682
 683         if (reqout)
 684                 {
 685                 derbio = BIO_new_file(reqout, "wb");
 686                 if(!derbio)
 687                         {
 688                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 689                         goto end;
 690                         }
 691                 i2d_OCSP_REQUEST_bio(derbio, req);
 692                 BIO_free(derbio);
 693                 }
 694
 695         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
 696                 {
 697                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
 698                 goto end;
 699                 }
 700
 701         if (ridx_filename && !rdb)
 702                 {
 703                 BIO *db_bio = NULL;
 704                 db_bio = BIO_new_file(ridx_filename, "r");
 705                 if (!db_bio)
 706                         {
 707                         BIO_printf(bio_err, "Error opening index file %s\n", ridx_filename);
 708                         goto end;
 709                         }
 710                 rdb = TXT_DB_read(db_bio, DB_NUMBER);
 711                 BIO_free(db_bio);
 712                 if (!rdb)
 713                         {
 714                         BIO_printf(bio_err, "Error reading index file %s\n", ridx_filename);
 715                         goto end;
 716                         }
 717                 if (!make_serial_index(rdb))
 718                         goto end;
 719                 }
 720
 721         if (rdb)
 722                 {
 723                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
 724                 if (cbio)
 725                         send_ocsp_response(cbio, resp);
 726                 }
 727         else if (host)
 728                 {
 729 #ifndef OPENSSL_NO_SOCK
 730                 cbio = BIO_new_connect(host);
 731 #else
 732                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
 733                 goto end;
 734 #endif
 735                 if (!cbio)
 736                         {
 737                         BIO_printf(bio_err, "Error creating connect BIO\n");
 738                         goto end;
 739                         }
 740                 if (port) BIO_set_conn_port(cbio, port);
 741                 if (use_ssl == 1)
 742                         {
 743                         BIO *sbio;
 744 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 745                         ctx = SSL_CTX_new(SSLv23_client_method());
 746 #elif !defined(OPENSSL_NO_SSL3)
 747                         ctx = SSL_CTX_new(SSLv3_client_method());
 748 #elif !defined(OPENSSL_NO_SSL2)
 749                         ctx = SSL_CTX_new(SSLv2_client_method());
 750 #else
 751                         BIO_printf(bio_err, "SSL is disabled\n");
 752                         goto end;
 753 #endif
 754                         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
 755                         sbio = BIO_new_ssl(ctx, 1);
 756                         cbio = BIO_push(sbio, cbio);
 757                         }
 758                 if (BIO_do_connect(cbio) <= 0)
 759                         {
 760                         BIO_printf(bio_err, "Error connecting BIO\n");
 761                         goto end;
 762                         }
 763                 resp = OCSP_sendreq_bio(cbio, path, req);
 764                 BIO_free_all(cbio);
 765                 cbio = NULL;
 766                 if (!resp)
 767                         {
 768                         BIO_printf(bio_err, "Error querying OCSP responsder\n");
 769                         goto end;
 770                         }
 771                 }
 772         else if (respin)
 773                 {
 774                 derbio = BIO_new_file(respin, "rb");
 775                 if (!derbio)
 776                         {
 777                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 778                         goto end;
 779                         }
 780                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 781                 BIO_free(derbio);
 782                 if(!resp)
 783                         {
 784                         BIO_printf(bio_err, "Error reading OCSP response\n");
 785                         goto end;
 786                         }
 787
 788                 }
 789         else
 790                 {
 791                 ret = 0;
 792                 goto end;
 793                 }
 794
 795         done_resp:
 796
 797         if (respout)
 798                 {
 799                 derbio = BIO_new_file(respout, "wb");
 800                 if(!derbio)
 801                         {
 802                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 803                         goto end;
 804                         }
 805                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 806                 BIO_free(derbio);
 807                 }
 808
 809         i = OCSP_response_status(resp);
 810
 811         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 812                 {
 813                 BIO_printf(out, "Responder Error: %s (%ld)\n",
 814                                 OCSP_response_status_str(i), i);
 815                 if (ignore_err)
 816                         goto redo_accept;
 817                 ret = 0;
 818                 goto end;
 819                 }
 820
 821         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 822
 823         /* If running as responder don't verify our own response */
 824         if (cbio)
 825                 {
 826                 if (accept_count > 0)
 827                         accept_count--;
 828                 /* Redo if more connections needed */
 829                 if (accept_count)
 830                         {
 831                         BIO_free_all(cbio);
 832                         cbio = NULL;
 833                         OCSP_REQUEST_free(req);
 834                         req = NULL;
 835                         OCSP_RESPONSE_free(resp);
 836                         resp = NULL;
 837                         goto redo_accept;
 838                         }
 839                 goto end;
 840                 }
 841
 842         if (!store)
 843                 store = setup_verify(bio_err, CAfile, CApath);
 844         if (!store)
 845                 goto end;
 846         if (verify_certfile)
 847                 {
 848                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
 849                         NULL, e, "validator certificate");
 850                 if (!verify_other) goto end;
 851                 }
 852
 853         bs = OCSP_response_get1_basic(resp);
 854
 855         if (!bs)
 856                 {
 857                 BIO_printf(bio_err, "Error parsing response\n");
 858                 goto end;
 859                 }
 860
 861         if (!noverify)
 862                 {
 863                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
 864                         {
 865                         if (i == -1)
 866                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 867                         else
 868                                 {
 869                                 BIO_printf(bio_err, "Nonce Verify error\n");
 870                                 goto end;
 871                                 }
 872                         }
 873
 874                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 875                 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
 876
 877                 if(i <= 0)
 878                         {
 879                         BIO_printf(bio_err, "Response Verify Failure\n", i);
 880                         ERR_print_errors(bio_err);
 881                         }
 882                 else
 883                         BIO_printf(bio_err, "Response verify OK\n");
 884
 885                 }
 886
 887         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 888                 goto end;
 889
 890         ret = 0;
 891
 892 end:
 893         ERR_print_errors(bio_err);
 894         X509_free(signer);
 895         X509_STORE_free(store);
 896         EVP_PKEY_free(key);
 897         EVP_PKEY_free(rkey);
 898         X509_free(issuer);
 899         X509_free(cert);
 900         X509_free(rsigner);
 901         X509_free(rca_cert);
 902         TXT_DB_free(rdb);
 903         BIO_free_all(cbio);
 904         BIO_free_all(acbio);
 905         BIO_free(out);
 906         OCSP_REQUEST_free(req);
 907         OCSP_RESPONSE_free(resp);
 908         OCSP_BASICRESP_free(bs);
 909         sk_free(reqnames);
 910         sk_OCSP_CERTID_free(ids);
 911         sk_X509_pop_free(sign_other, X509_free);
 912         sk_X509_pop_free(verify_other, X509_free);
 913
 914         if (use_ssl != -1)
 915                 {
 916                 OPENSSL_free(host);
 917                 OPENSSL_free(port);
 918                 OPENSSL_free(path);
 919                 SSL_CTX_free(ctx);
 920                 }
 921
 922         OPENSSL_EXIT(ret);
 923 }
 924
 925 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
 926                                 STACK_OF(OCSP_CERTID) *ids)
 927         {
 928         OCSP_CERTID *id;
 929         if(!issuer)
 930                 {
 931                 BIO_printf(bio_err, "No issuer certificate specified\n");
 932                 return 0;
 933                 }
 934         if(!*req) *req = OCSP_REQUEST_new();
 935         if(!*req) goto err;
 936         id = OCSP_cert_to_id(NULL, cert, issuer);
 937         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 938         if(!OCSP_request_add0_id(*req, id)) goto err;
 939         return 1;
 940
 941         err:
 942         BIO_printf(bio_err, "Error Creating OCSP request\n");
 943         return 0;
 944         }
 945
 946 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
 947                                 STACK_OF(OCSP_CERTID) *ids)
 948         {
 949         OCSP_CERTID *id;
 950         X509_NAME *iname;
 951         ASN1_BIT_STRING *ikey;
 952         ASN1_INTEGER *sno;
 953         if(!issuer)
 954                 {
 955                 BIO_printf(bio_err, "No issuer certificate specified\n");
 956                 return 0;
 957                 }
 958         if(!*req) *req = OCSP_REQUEST_new();
 959         if(!*req) goto err;
 960         iname = X509_get_subject_name(issuer);
 961         ikey = X509_get0_pubkey_bitstr(issuer);
 962         sno = s2i_ASN1_INTEGER(NULL, serial);
 963         if(!sno)
 964                 {
 965                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 966                 return 0;
 967                 }
 968         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
 969         ASN1_INTEGER_free(sno);
 970         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 971         if(!OCSP_request_add0_id(*req, id)) goto err;
 972         return 1;
 973
 974         err:
 975         BIO_printf(bio_err, "Error Creating OCSP request\n");
 976         return 0;
 977         }
 978
 979 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 980                                         STACK *names, STACK_OF(OCSP_CERTID) *ids,
 981                                         long nsec, long maxage)
 982         {
 983         OCSP_CERTID *id;
 984         char *name;
 985         int i;
 986
 987         int status, reason;
 988
 989         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 990
 991         if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
 992                 return 1;
 993
 994         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
 995                 {
 996                 id = sk_OCSP_CERTID_value(ids, i);
 997                 name = sk_value(names, i);
 998                 BIO_printf(out, "%s: ", name);
 999
1000                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1001                                         &rev, &thisupd, &nextupd))
1002                         {
1003                         BIO_puts(out, "ERROR: No Status found.\n");
1004                         continue;
1005                         }
1006
1007                 /* Check validity: if invalid write to output BIO so we
1008                  * know which response this refers to.
1009                  */
1010                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1011                         {
1012                         BIO_puts(out, "WARNING: Status times invalid.\n");
1013                         ERR_print_errors(out);
1014                         }
1015                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1016
1017                 BIO_puts(out, "\tThis Update: ");
1018                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1019                 BIO_puts(out, "\n");
1020
1021                 if(nextupd)
1022                         {
1023                         BIO_puts(out, "\tNext Update: ");
1024                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1025                         BIO_puts(out, "\n");
1026                         }
1027
1028                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1029                         continue;
1030
1031                 if (reason != -1)
1032                         BIO_printf(out, "\tReason: %s\n",
1033                                 OCSP_crl_reason_str(reason));
1034
1035                 BIO_puts(out, "\tRevocation Time: ");
1036                 ASN1_GENERALIZEDTIME_print(out, rev);
1037                 BIO_puts(out, "\n");
1038                 }
1039
1040         return 1;
1041         }
1042
1043
1044 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, TXT_DB *db,
1045                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1046                         STACK_OF(X509) *rother, unsigned long flags,
1047                         int nmin, int ndays)
1048         {
1049         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1050         OCSP_CERTID *cid, *ca_id = NULL;
1051         OCSP_BASICRESP *bs = NULL;
1052         int i, id_count, ret = 1;
1053
1054
1055         id_count = OCSP_request_onereq_count(req);
1056
1057         if (id_count <= 0)
1058                 {
1059                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1060                 goto end;
1061                 }
1062
1063         ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
1064
1065         bs = OCSP_BASICRESP_new();
1066         thisupd = X509_gmtime_adj(NULL, 0);
1067         if (ndays != -1)
1068                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1069
1070         /* Examine each certificate id in the request */
1071         for (i = 0; i < id_count; i++)
1072                 {
1073                 OCSP_ONEREQ *one;
1074                 ASN1_INTEGER *serial;
1075                 char **inf;
1076                 one = OCSP_request_onereq_get0(req, i);
1077                 cid = OCSP_onereq_get0_id(one);
1078                 /* Is this request about our CA? */
1079                 if (OCSP_id_issuer_cmp(ca_id, cid))
1080                         {
1081                         OCSP_basic_add1_status(bs, cid,
1082                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1083                                                 0, NULL,
1084                                                 thisupd, nextupd);
1085                         continue;
1086                         }
1087                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1088                 inf = lookup_serial(db, serial);
1089                 if (!inf)
1090                         OCSP_basic_add1_status(bs, cid,
1091                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1092                                                 0, NULL,
1093                                                 thisupd, nextupd);
1094                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1095                         OCSP_basic_add1_status(bs, cid,
1096                                                 V_OCSP_CERTSTATUS_GOOD,
1097                                                 0, NULL,
1098                                                 thisupd, nextupd);
1099                 else if (inf[DB_type][0] == DB_TYPE_REV)
1100                         {
1101                         ASN1_OBJECT *inst = NULL;
1102                         ASN1_TIME *revtm = NULL;
1103                         ASN1_GENERALIZEDTIME *invtm = NULL;
1104                         OCSP_SINGLERESP *single;
1105                         int reason = -1;
1106                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1107                         single = OCSP_basic_add1_status(bs, cid,
1108                                                 V_OCSP_CERTSTATUS_REVOKED,
1109                                                 reason, revtm,
1110                                                 thisupd, nextupd);
1111                         if (invtm)
1112                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1113                         else if (inst)
1114                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1115                         ASN1_OBJECT_free(inst);
1116                         ASN1_TIME_free(revtm);
1117                         ASN1_GENERALIZEDTIME_free(invtm);
1118                         }
1119                 }
1120
1121         OCSP_copy_nonce(bs, req);
1122
1123         OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
1124
1125         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1126
1127         end:
1128         ASN1_TIME_free(thisupd);
1129         ASN1_TIME_free(nextupd);
1130         OCSP_CERTID_free(ca_id);
1131         OCSP_BASICRESP_free(bs);
1132         return ret;
1133
1134         }
1135
1136 static char **lookup_serial(TXT_DB *db, ASN1_INTEGER *ser)
1137         {
1138         int i;
1139         BIGNUM *bn = NULL;
1140         char *itmp, *row[DB_NUMBER],**rrow;
1141         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1142         bn = ASN1_INTEGER_to_BN(ser,NULL);
1143         if (BN_is_zero(bn))
1144                 itmp = BUF_strdup("00");
1145         else
1146                 itmp = BN_bn2hex(bn);
1147         row[DB_serial] = itmp;
1148         BN_free(bn);
1149         rrow=TXT_DB_get_by_index(db,DB_serial,row);
1150         OPENSSL_free(itmp);
1151         return rrow;
1152         }
1153
1154 /* Quick and dirty OCSP server: read in and parse input request */
1155
1156 static BIO *init_responder(char *port)
1157         {
1158         BIO *acbio = NULL, *bufbio = NULL;
1159         bufbio = BIO_new(BIO_f_buffer());
1160         if (!bufbio)
1161                 goto err;
1162 #ifndef OPENSSL_NO_SOCK
1163         acbio = BIO_new_accept(port);
1164 #else
1165         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1166 #endif
1167         if (!acbio)
1168                 goto err;
1169         BIO_set_accept_bios(acbio, bufbio);
1170         bufbio = NULL;
1171
1172         if (BIO_do_accept(acbio) <= 0)
1173                 {
1174                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1175                         ERR_print_errors(bio_err);
1176                         goto err;
1177                 }
1178
1179         return acbio;
1180
1181         err:
1182         BIO_free_all(acbio);
1183         BIO_free(bufbio);
1184         return NULL;
1185         }
1186
1187 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1188         {
1189         int have_post = 0, len;
1190         OCSP_REQUEST *req = NULL;
1191         char inbuf[1024];
1192         BIO *cbio = NULL;
1193
1194         if (BIO_do_accept(acbio) <= 0)
1195                 {
1196                         BIO_printf(bio_err, "Error accepting connection\n");
1197                         ERR_print_errors(bio_err);
1198                         return 0;
1199                 }
1200
1201         cbio = BIO_pop(acbio);
1202         *pcbio = cbio;
1203
1204         for(;;)
1205                 {
1206                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1207                 if (len <= 0)
1208                         return 1;
1209                 /* Look for "POST" signalling start of query */
1210                 if (!have_post)
1211                         {
1212                         if(strncmp(inbuf, "POST", 4))
1213                                 {
1214                                 BIO_printf(bio_err, "Invalid request\n");
1215                                 return 1;
1216                                 }
1217                         have_post = 1;
1218                         }
1219                 /* Look for end of headers */
1220                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1221                         break;
1222                 }
1223
1224         /* Try to read OCSP request */
1225
1226         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1227
1228         if (!req)
1229                 {
1230                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1231                 ERR_print_errors(bio_err);
1232                 }
1233
1234         *preq = req;
1235
1236         return 1;
1237
1238         }
1239
1240 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1241         {
1242         char http_resp[] =
1243                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1244                 "Content-Length: %d\r\n\r\n";
1245         if (!cbio)
1246                 return 0;
1247         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1248         i2d_OCSP_RESPONSE_bio(cbio, resp);
1249         BIO_flush(cbio);
1250         return 1;
1251         }
1252
1253 #endif