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 "apps.h"
  65
  66 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
  67                                 STACK_OF(OCSP_CERTID) *ids);
  68 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
  69                                 STACK_OF(OCSP_CERTID) *ids);
  70 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  71                                 STACK *names, STACK_OF(OCSP_CERTID) *ids);
  72
  73 #undef PROG
  74 #define PROG ocsp_main
  75
  76 int MAIN(int, char **);
  77
  78 int MAIN(int argc, char **argv)
  79         {
  80         char **args;
  81         char *host = NULL, *path = "/";
  82         char *reqin = NULL, *respin = NULL;
  83         char *reqout = NULL, *respout = NULL;
  84         char *signfile = NULL, *keyfile = NULL;
  85         char *outfile = NULL;
  86         int add_nonce = 1, noverify = 0;
  87         OCSP_REQUEST *req = NULL;
  88         OCSP_RESPONSE *resp = NULL;
  89         OCSP_BASICRESP *bs = NULL;
  90         X509 *issuer = NULL, *cert = NULL;
  91         X509 *signer = NULL;
  92         EVP_PKEY *key = NULL;
  93         BIO *cbio = NULL, *derbio = NULL;
  94         BIO *out = NULL;
  95         int req_text = 0, resp_text = 0;
  96         char *CAfile = NULL, *CApath = NULL;
  97         X509_STORE *store = NULL;
  98         int ret = 1;
  99         int badarg = 0;
 100         int i;
 101         STACK *reqnames = NULL;
 102         STACK_OF(OCSP_CERTID) *ids = NULL;
 103         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 104         ERR_load_crypto_strings();
 105         args = argv + 1;
 106         reqnames = sk_new_null();
 107         ids = sk_OCSP_CERTID_new_null();
 108         while (!badarg && *args && *args[0] == '-')
 109                 {
 110                 if (!strcmp(*args, "-out"))
 111                         {
 112                         if (args[1])
 113                                 {
 114                                 args++;
 115                                 outfile = *args;
 116                                 }
 117                         else badarg = 1;
 118                         }
 119                 else if (!strcmp(*args, "-host"))
 120                         {
 121                         if (args[1])
 122                                 {
 123                                 args++;
 124                                 host = *args;
 125                                 }
 126                         else badarg = 1;
 127                         }
 128                 else if (!strcmp(*args, "-noverify"))
 129                         noverify = 1;
 130                 else if (!strcmp(*args, "-nonce"))
 131                         add_nonce = 2;
 132                 else if (!strcmp(*args, "-no_nonce"))
 133                         add_nonce = 0;
 134                 else if (!strcmp(*args, "-text"))
 135                         {
 136                         req_text = 1;
 137                         resp_text = 1;
 138                         }
 139                 else if (!strcmp(*args, "-req_text"))
 140                         req_text = 1;
 141                 else if (!strcmp(*args, "-resp_text"))
 142                         resp_text = 1;
 143                 else if (!strcmp(*args, "-reqin"))
 144                         {
 145                         if (args[1])
 146                                 {
 147                                 args++;
 148                                 reqin = *args;
 149                                 }
 150                         else badarg = 1;
 151                         }
 152                 else if (!strcmp(*args, "-respin"))
 153                         {
 154                         if (args[1])
 155                                 {
 156                                 args++;
 157                                 respin = *args;
 158                                 }
 159                         else badarg = 1;
 160                         }
 161                 else if (!strcmp(*args, "-signer"))
 162                         {
 163                         if (args[1])
 164                                 {
 165                                 args++;
 166                                 signfile = *args;
 167                                 }
 168                         else badarg = 1;
 169                         }
 170                 else if (!strcmp (*args, "-CAfile"))
 171                         {
 172                         if (args[1])
 173                                 {
 174                                 args++;
 175                                 CAfile = *args;
 176                                 }
 177                         else badarg = 1;
 178                         }
 179                 else if (!strcmp (*args, "-CApath"))
 180                         {
 181                         if (args[1])
 182                                 {
 183                                 args++;
 184                                 CApath = *args;
 185                                 }
 186                         else badarg = 1;
 187                         }
 188                  else if (!strcmp(*args, "-signkey"))
 189                         {
 190                         if (args[1])
 191                                 {
 192                                 args++;
 193                                 keyfile = *args;
 194                                 }
 195                         else badarg = 1;
 196                         }
 197                 else if (!strcmp(*args, "-reqout"))
 198                         {
 199                         if (args[1])
 200                                 {
 201                                 args++;
 202                                 reqout = *args;
 203                                 }
 204                         else badarg = 1;
 205                         }
 206                 else if (!strcmp(*args, "-respout"))
 207                         {
 208                         if (args[1])
 209                                 {
 210                                 args++;
 211                                 respout = *args;
 212                                 }
 213                         else badarg = 1;
 214                         }
 215                  else if (!strcmp(*args, "-path"))
 216                         {
 217                         if (args[1])
 218                                 {
 219                                 args++;
 220                                 path = *args;
 221                                 }
 222                         else badarg = 1;
 223                         }
 224                 else if (!strcmp(*args, "-issuer"))
 225                         {
 226                         if (args[1])
 227                                 {
 228                                 args++;
 229                                 X509_free(issuer);
 230                                 issuer = load_cert(bio_err, *args, FORMAT_PEM);
 231                                 if(!issuer) goto end;
 232                                 }
 233                         else badarg = 1;
 234                         }
 235                 else if (!strcmp (*args, "-cert"))
 236                         {
 237                         if (args[1])
 238                                 {
 239                                 args++;
 240                                 X509_free(cert);
 241                                 cert = load_cert(bio_err, *args, FORMAT_PEM);
 242                                 if(!cert) goto end;
 243                                 if(!add_ocsp_cert(&req, cert, issuer, ids))
 244                                         goto end;
 245                                 if(!sk_push(reqnames, *args))
 246                                         goto end;
 247                                 }
 248                         else badarg = 1;
 249                         }
 250                 else if (!strcmp(*args, "-serial"))
 251                         {
 252                         if (args[1])
 253                                 {
 254                                 args++;
 255                                 if(!add_ocsp_serial(&req, *args, issuer, ids))
 256                                         goto end;
 257                                 if(!sk_push(reqnames, *args))
 258                                         goto end;
 259                                 }
 260                         else badarg = 1;
 261                         }
 262                 else badarg = 1;
 263                 args++;
 264                 }
 265
 266         /* Have we anything to do? */
 267         if (!req && !reqin && !respin) badarg = 1;
 268
 269         if (badarg)
 270                 {
 271                 BIO_printf (bio_err, "OCSP utility\n");
 272                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 273                 BIO_printf (bio_err, "where options are\n");
 274                 BIO_printf (bio_err, "-out file     output filename\n");
 275                 BIO_printf (bio_err, "-issuer file  issuer certificate\n");
 276                 BIO_printf (bio_err, "-cert file    certificate to check\n");
 277                 BIO_printf (bio_err, "-serial n     serial number to check\n");
 278                 BIO_printf (bio_err, "-signer file  certificate to sign OCSP request with\n");
 279                 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n");
 280                 BIO_printf (bio_err, "-req_text     print text form of request\n");
 281                 BIO_printf (bio_err, "-resp_text    print text form of response\n");
 282                 BIO_printf (bio_err, "-text         print text form of request and response\n");
 283                 BIO_printf (bio_err, "-reqout file  write DER encoded OCSP request to \"file\"\n");
 284                 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
 285                 BIO_printf (bio_err, "-reqin file   read DER encoded OCSP request from \"file\"\n");
 286                 BIO_printf (bio_err, "-respin file  read DER encoded OCSP reponse from \"file\"\n");
 287                 BIO_printf (bio_err, "-nonce        add OCSP nonce to request\n");
 288                 BIO_printf (bio_err, "-no_nonce     don't add OCSP nonce to request\n");
 289                 BIO_printf (bio_err, "-host host:n  send OCSP request to host on port n\n");
 290                 BIO_printf (bio_err, "-path         path to use in OCSP request\n");
 291                 BIO_printf (bio_err, "-CApath dir   trusted certificates directory\n");
 292                 BIO_printf (bio_err, "-CAfile file  trusted certificates file\n");
 293                 BIO_printf (bio_err, "-noverify     don't verify response\n");
 294                 goto end;
 295                 }
 296
 297         if(outfile) out = BIO_new_file(outfile, "w");
 298         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 299
 300         if(!out)
 301                 {
 302                 BIO_printf(bio_err, "Error opening output file\n");
 303                 goto end;
 304                 }
 305
 306         if (!req && (add_nonce != 2)) add_nonce = 0;
 307
 308         if (!req && reqin)
 309                 {
 310                 derbio = BIO_new_file(reqin, "rb");
 311                 if (!derbio)
 312                         {
 313                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 314                         goto end;
 315                         }
 316                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 317                 BIO_free(derbio);
 318                 if(!req)
 319                         {
 320                         BIO_printf(bio_err, "Error reading OCSP request\n");
 321                         goto end;
 322                         }
 323                 }
 324
 325         if (!req && (signfile || reqout || host || add_nonce))
 326                 {
 327                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 328                 goto end;
 329                 }
 330
 331         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
 332
 333         if (signfile)
 334                 {
 335                 if (!keyfile) keyfile = signfile;
 336                 signer = load_cert(bio_err, signfile, FORMAT_PEM);
 337                 if (!signer)
 338                         {
 339                         BIO_printf(bio_err, "Error loading signer certificate\n");
 340                         goto end;
 341                         }
 342                 key = load_key(bio_err, keyfile, FORMAT_PEM, NULL, NULL);
 343                 if (!key)
 344                         {
 345                         BIO_printf(bio_err, "Error loading signer private key\n");
 346                         goto end;
 347                         }
 348                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), NULL, 0))
 349                         {
 350                         BIO_printf(bio_err, "Error signing OCSP request\n");
 351                         goto end;
 352                         }
 353                 }
 354
 355         if (reqout)
 356                 {
 357                 derbio = BIO_new_file(reqout, "wb");
 358                 if (!derbio)
 359                         {
 360                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 361                         goto end;
 362                         }
 363                 i2d_OCSP_REQUEST_bio(derbio, req);
 364                 BIO_free(derbio);
 365                 }
 366
 367         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 368
 369         if (host)
 370                 {
 371                 cbio = BIO_new_connect(host);
 372                 if (!cbio)
 373                         {
 374                         BIO_printf(bio_err, "Error creating connect BIO\n");
 375                         goto end;
 376                         }
 377                 if (BIO_do_connect(cbio) <= 0)
 378                         {
 379                         BIO_printf(bio_err, "Error connecting BIO\n");
 380                         goto end;
 381                         }
 382                 resp = OCSP_sendreq_bio(cbio, path, req);
 383                 BIO_free(cbio);
 384                 cbio = NULL;
 385                 if (!resp)
 386                         {
 387                         BIO_printf(bio_err, "Error querying OCSP responsder\n");
 388                         goto end;
 389                         }
 390                 }
 391         else if (respin)
 392                 {
 393                 derbio = BIO_new_file(respin, "rb");
 394                 if (!derbio)
 395                         {
 396                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 397                         goto end;
 398                         }
 399                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 400                 BIO_free(derbio);
 401                 if(!resp)
 402                         {
 403                         BIO_printf(bio_err, "Error reading OCSP response\n");
 404                         goto end;
 405                         }
 406
 407                 }
 408         else
 409                 {
 410                 ret = 0;
 411                 goto end;
 412                 }
 413
 414         if (respout)
 415                 {
 416                 derbio = BIO_new_file(respout, "wb");
 417                 if(!derbio)
 418                         {
 419                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 420                         goto end;
 421                         }
 422                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 423                 BIO_free(derbio);
 424                 }
 425
 426         i = OCSP_response_status(resp);
 427
 428         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
 429                 {
 430                 BIO_printf(out, "Responder Error: %s (%ld)\n",
 431                                 OCSP_response_status_str(i), i);
 432                 ret = 0;
 433                 goto end;
 434                 }
 435
 436         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 437
 438         store = setup_verify(bio_err, CAfile, CApath);
 439         if(!store) goto end;
 440
 441         bs = OCSP_response_get1_basic(resp);
 442
 443         if (!bs)
 444                 {
 445                 BIO_printf(bio_err, "Error parsing response\n");
 446                 goto end;
 447                 }
 448
 449         if (!noverify)
 450                 {
 451                 if (req && (OCSP_check_nonce(req, bs) <= 0))
 452                         {
 453                         BIO_printf(bio_err, "Nonce Verify error\n");
 454                         goto end;
 455                         }
 456
 457                 i = OCSP_basic_verify(bs, NULL, store, 0);
 458
 459                 if(i <= 0)
 460                         {
 461                         BIO_printf(bio_err, "Response Verify Failure\n", i);
 462                         ERR_print_errors(bio_err);
 463                         }
 464                 else
 465                         BIO_printf(bio_err, "Response verify OK\n");
 466
 467                 }
 468
 469         if (!print_ocsp_summary(out, bs, req, reqnames, ids))
 470                 goto end;
 471
 472         ret = 0;
 473
 474 end:
 475         ERR_print_errors(bio_err);
 476         X509_free(signer);
 477         X509_STORE_free(store);
 478         EVP_PKEY_free(key);
 479         X509_free(issuer);
 480         X509_free(cert);
 481         BIO_free(cbio);
 482         BIO_free(out);
 483         OCSP_REQUEST_free(req);
 484         OCSP_RESPONSE_free(resp);
 485         OCSP_BASICRESP_free(bs);
 486         sk_free(reqnames);
 487         sk_OCSP_CERTID_free(ids);
 488
 489         EXIT(ret);
 490 }
 491
 492 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
 493                                 STACK_OF(OCSP_CERTID) *ids)
 494         {
 495         OCSP_CERTID *id;
 496         if(!issuer)
 497                 {
 498                 BIO_printf(bio_err, "No issuer certificate specified\n");
 499                 return 0;
 500                 }
 501         if(!*req) *req = OCSP_REQUEST_new();
 502         if(!*req) goto err;
 503         id = OCSP_cert_to_id(NULL, cert, issuer);
 504         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 505         if(!OCSP_request_add0_id(*req, id)) goto err;
 506         return 1;
 507
 508         err:
 509         BIO_printf(bio_err, "Error Creating OCSP request\n");
 510         return 0;
 511         }
 512
 513 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
 514                                 STACK_OF(OCSP_CERTID) *ids)
 515         {
 516         OCSP_CERTID *id;
 517         X509_NAME *iname;
 518         ASN1_BIT_STRING *ikey;
 519         ASN1_INTEGER *sno;
 520         if(!issuer)
 521                 {
 522                 BIO_printf(bio_err, "No issuer certificate specified\n");
 523                 return 0;
 524                 }
 525         if(!*req) *req = OCSP_REQUEST_new();
 526         if(!*req) goto err;
 527         iname = X509_get_subject_name(issuer);
 528         ikey = issuer->cert_info->key->public_key;
 529         sno = s2i_ASN1_INTEGER(NULL, serial);
 530         if(!sno)
 531                 {
 532                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 533                 return 0;
 534                 }
 535         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
 536         ASN1_INTEGER_free(sno);
 537         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
 538         if(!OCSP_request_add0_id(*req, id)) goto err;
 539         return 1;
 540
 541         err:
 542         BIO_printf(bio_err, "Error Creating OCSP request\n");
 543         return 0;
 544         }
 545
 546 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 547                                         STACK *names, STACK_OF(OCSP_CERTID) *ids)
 548         {
 549         OCSP_CERTID *id;
 550         char *name;
 551         int i;
 552
 553         int status, reason;
 554
 555         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 556
 557         if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
 558                 return 1;
 559
 560         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
 561                 {
 562                 id = sk_OCSP_CERTID_value(ids, i);
 563                 name = sk_value(names, i);
 564                 BIO_printf(out, "%s: ", name);
 565
 566                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
 567                                         &rev, &thisupd, &nextupd))
 568                         {
 569                         BIO_puts(out, "ERROR: No Status found.\n");
 570                         continue;
 571                         }
 572                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 573
 574                 BIO_puts(out, "\tThis Update: ");
 575                 ASN1_GENERALIZEDTIME_print(out, thisupd);
 576                 BIO_puts(out, "\n");
 577
 578                 if(nextupd)
 579                         {
 580                         BIO_puts(out, "\tNext Update: ");
 581                         ASN1_GENERALIZEDTIME_print(out, thisupd);
 582                         BIO_puts(out, "\n");
 583                         }
 584
 585                 if (status != V_OCSP_CERTSTATUS_REVOKED)
 586                         continue;
 587
 588                 if (reason > 0)
 589                         BIO_printf(out, "\tReason: %s\n",
 590                                 OCSP_crl_reason_str(reason));
 591
 592                 BIO_puts(out, "\tRevocation Time: ");
 593                 ASN1_GENERALIZEDTIME_print(out, rev);
 594                 BIO_puts(out, "\n");
 595                 }
 596
 597         return 1;
 598         }
 599