apps/ocsp.c

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