apps/ocsp.c

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