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 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer);
  68
  69 #undef PROG
  70 #define PROG ocsp_main
  71
  72 int MAIN(int, char **);
  73
  74 int MAIN(int argc, char **argv)
  75         {
  76         char **args;
  77         char *host = NULL, *path = "/";
  78         char *reqin = NULL, *respin = NULL;
  79         char *reqout = NULL, *respout = NULL;
  80         char *signfile = NULL, *keyfile = NULL;
  81         char *outfile = NULL;
  82         int add_nonce = 1;
  83         OCSP_REQUEST *req = NULL;
  84         OCSP_RESPONSE *resp = NULL;
  85         OCSP_BASICRESP *bs = NULL;
  86         X509 *issuer = NULL, *cert = NULL;
  87         X509 *signer = NULL;
  88         EVP_PKEY *key = NULL;
  89         BIO *cbio = NULL, *derbio = NULL;
  90         BIO *out = NULL;
  91         int req_text = 0, resp_text = 0;
  92         char *CAfile = NULL, *CApath = NULL;
  93         X509_STORE *store = NULL;
  94         int ret = 1;
  95         int badarg = 0;
  96         int i;
  97         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
  98         ERR_load_crypto_strings();
  99         args = argv + 1;
 100         while (!badarg && *args && *args[0] == '-')
 101                 {
 102                 if (!strcmp(*args, "-out"))
 103                         {
 104                         if (args[1])
 105                                 {
 106                                 args++;
 107                                 outfile = *args;
 108                                 }
 109                         else badarg = 1;
 110                         }
 111                 else if (!strcmp(*args, "-host"))
 112                         {
 113                         if (args[1])
 114                                 {
 115                                 args++;
 116                                 host = *args;
 117                                 }
 118                         else badarg = 1;
 119                         }
 120                 else if (!strcmp(*args, "-nonce"))
 121                         add_nonce = 2;
 122                 else if (!strcmp(*args, "-no_nonce"))
 123                         add_nonce = 0;
 124                 else if (!strcmp(*args, "-text"))
 125                         {
 126                         req_text = 1;
 127                         resp_text = 1;
 128                         }
 129                 else if (!strcmp(*args, "-req_text"))
 130                         req_text = 1;
 131                 else if (!strcmp(*args, "-resp_text"))
 132                         resp_text = 1;
 133                 else if (!strcmp(*args, "-reqin"))
 134                         {
 135                         if (args[1])
 136                                 {
 137                                 args++;
 138                                 reqin = *args;
 139                                 }
 140                         else badarg = 1;
 141                         }
 142                 else if (!strcmp(*args, "-respin"))
 143                         {
 144                         if (args[1])
 145                                 {
 146                                 args++;
 147                                 respin = *args;
 148                                 }
 149                         else badarg = 1;
 150                         }
 151                 else if (!strcmp(*args, "-signer"))
 152                         {
 153                         if (args[1])
 154                                 {
 155                                 args++;
 156                                 signfile = *args;
 157                                 }
 158                         else badarg = 1;
 159                         }
 160                 else if (!strcmp (*args, "-CAfile"))
 161                         {
 162                         if (args[1])
 163                                 {
 164                                 args++;
 165                                 CAfile = *args;
 166                                 }
 167                         else badarg = 1;
 168                         }
 169                 else if (!strcmp (*args, "-CApath"))
 170                         {
 171                         if (args[1])
 172                                 {
 173                                 args++;
 174                                 CApath = *args;
 175                                 }
 176                         else badarg = 1;
 177                         }
 178                  else if (!strcmp(*args, "-signkey"))
 179                         {
 180                         if (args[1])
 181                                 {
 182                                 args++;
 183                                 keyfile = *args;
 184                                 }
 185                         else badarg = 1;
 186                         }
 187                 else if (!strcmp(*args, "-reqout"))
 188                         {
 189                         if (args[1])
 190                                 {
 191                                 args++;
 192                                 reqout = *args;
 193                                 }
 194                         else badarg = 1;
 195                         }
 196                 else if (!strcmp(*args, "-respout"))
 197                         {
 198                         if (args[1])
 199                                 {
 200                                 args++;
 201                                 respout = *args;
 202                                 }
 203                         else badarg = 1;
 204                         }
 205                  else if (!strcmp(*args, "-path"))
 206                         {
 207                         if (args[1])
 208                                 {
 209                                 args++;
 210                                 path = *args;
 211                                 }
 212                         else badarg = 1;
 213                         }
 214                 else if (!strcmp(*args, "-issuer"))
 215                         {
 216                         if (args[1])
 217                                 {
 218                                 args++;
 219                                 X509_free(issuer);
 220                                 issuer = load_cert(bio_err, *args, FORMAT_PEM);
 221                                 if(!issuer) goto end;
 222                                 }
 223                         else badarg = 1;
 224                         }
 225                 else if (!strcmp (*args, "-cert"))
 226                         {
 227                         if (args[1])
 228                                 {
 229                                 args++;
 230                                 X509_free(cert);
 231                                 cert = load_cert(bio_err, *args, FORMAT_PEM);
 232                                 if(!cert) goto end;
 233                                 if(!add_ocsp_cert(&req, cert, issuer))
 234                                         goto end;
 235                                 }
 236                         else badarg = 1;
 237                         }
 238                 else if (!strcmp(*args, "-serial"))
 239                         {
 240                         if (args[1])
 241                                 {
 242                                 args++;
 243                                 if(!add_ocsp_serial(&req, *args, issuer))
 244                                         goto end;
 245                                 }
 246                         else badarg = 1;
 247                         }
 248                 else badarg = 1;
 249                 args++;
 250                 }
 251
 252         /* Have we anything to do? */
 253         if (!req && !reqin && !respin) badarg = 1;
 254
 255         if (badarg)
 256                 {
 257                 BIO_printf (bio_err, "OCSP utility\n");
 258                 BIO_printf (bio_err, "Usage ocsp [options]\n");
 259                 BIO_printf (bio_err, "where options are\n");
 260                 BIO_printf (bio_err, "-out file     output filename\n");
 261                 BIO_printf (bio_err, "-issuer file  issuer certificate\n");
 262                 BIO_printf (bio_err, "-cert file    certificate to check\n");
 263                 BIO_printf (bio_err, "-serial n     serial number to check\n");
 264                 BIO_printf (bio_err, "-signer file  certificate to sign OCSP request with\n");
 265                 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n");
 266                 BIO_printf (bio_err, "-req_text     print text form of request\n");
 267                 BIO_printf (bio_err, "-resp_text    print text form of response\n");
 268                 BIO_printf (bio_err, "-text         print text form of request and response\n");
 269                 BIO_printf (bio_err, "-reqout file  write DER encoded OCSP request to \"file\"\n");
 270                 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
 271                 BIO_printf (bio_err, "-reqin file   read DER encoded OCSP request from \"file\"\n");
 272                 BIO_printf (bio_err, "-respin file  read DER encoded OCSP reponse from \"file\"\n");
 273                 BIO_printf (bio_err, "-nonce        add OCSP nonce to request\n");
 274                 BIO_printf (bio_err, "-no_nonce     don't add OCSP nonce to request\n");
 275                 BIO_printf (bio_err, "-host host:n  send OCSP request to host on port n\n");
 276                 BIO_printf (bio_err, "-path         path to use in OCSP request\n");
 277                 goto end;
 278                 }
 279
 280         if(outfile) out = BIO_new_file(outfile, "w");
 281         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 282
 283         if(!out)
 284                 {
 285                 BIO_printf(bio_err, "Error opening output file\n");
 286                 goto end;
 287                 }
 288
 289         if (!req && (add_nonce != 2)) add_nonce = 0;
 290
 291         if (!req && reqin)
 292                 {
 293                 derbio = BIO_new_file(reqin, "rb");
 294                 if (!derbio)
 295                         {
 296                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
 297                         goto end;
 298                         }
 299                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 300                 BIO_free(derbio);
 301                 if(!req)
 302                         {
 303                         BIO_printf(bio_err, "Error reading OCSP request\n");
 304                         goto end;
 305                         }
 306                 }
 307
 308         if (!req && (signfile || reqout || host || add_nonce))
 309                 {
 310                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 311                 goto end;
 312                 }
 313
 314         if (req) OCSP_request_add1_nonce(req, NULL, -1);
 315
 316         if (signfile)
 317                 {
 318                 if (!keyfile) keyfile = signfile;
 319                 signer = load_cert(bio_err, signfile, FORMAT_PEM);
 320                 if (!signer)
 321                         {
 322                         BIO_printf(bio_err, "Error loading signer certificate\n");
 323                         goto end;
 324                         }
 325                 key = load_key(bio_err, keyfile, FORMAT_PEM, NULL, NULL);
 326                 if (!key)
 327                         {
 328                         BIO_printf(bio_err, "Error loading signer private key\n");
 329                         goto end;
 330                         }
 331                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), NULL, 0))
 332                         {
 333                         BIO_printf(bio_err, "Error signing OCSP request\n");
 334                         goto end;
 335                         }
 336                 }
 337
 338         if (reqout)
 339                 {
 340                 derbio = BIO_new_file(reqout, "wb");
 341                 if (!derbio)
 342                         {
 343                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
 344                         goto end;
 345                         }
 346                 i2d_OCSP_REQUEST_bio(derbio, req);
 347                 BIO_free(derbio);
 348                 }
 349
 350         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
 351
 352         if (host)
 353                 {
 354                 cbio = BIO_new_connect(host);
 355                 if (!cbio)
 356                         {
 357                         BIO_printf(bio_err, "Error creating connect BIO\n");
 358                         goto end;
 359                         }
 360                 if (BIO_do_connect(cbio) <= 0)
 361                         {
 362                         BIO_printf(bio_err, "Error connecting BIO\n");
 363                         goto end;
 364                         }
 365                 resp = OCSP_sendreq_bio(cbio, path, req);
 366                 BIO_free(cbio);
 367                 cbio = NULL;
 368                 if (!resp)
 369                         {
 370                         BIO_printf(bio_err, "Error querying OCSP responsder\n");
 371                         goto end;
 372                         }
 373                 }
 374         else if (respin)
 375                 {
 376                 derbio = BIO_new_file(respin, "rb");
 377                 if (!derbio)
 378                         {
 379                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
 380                         goto end;
 381                         }
 382                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 383                 BIO_free(derbio);
 384                 if(!resp)
 385                         {
 386                         BIO_printf(bio_err, "Error reading OCSP response\n");
 387                         goto end;
 388                         }
 389
 390                 }
 391         else
 392                 {
 393                 ret = 0;
 394                 goto end;
 395                 }
 396
 397         if (respout)
 398                 {
 399                 derbio = BIO_new_file(respout, "wb");
 400                 if(!derbio)
 401                         {
 402                         BIO_printf(bio_err, "Error opening file %s\n", respout);
 403                         goto end;
 404                         }
 405                 i2d_OCSP_RESPONSE_bio(derbio, resp);
 406                 BIO_free(derbio);
 407                 }
 408
 409         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
 410
 411         store = setup_verify(bio_err, CAfile, CApath);
 412         if(!store) goto end;
 413
 414         bs = OCSP_response_get1_basic(resp);
 415
 416         i = OCSP_basic_verify(bs, NULL, store, 0);
 417
 418         if(i <= 0)
 419                 {
 420                 BIO_printf(bio_err, "Response verify error (%d)\n", i);
 421                 ERR_print_errors(bio_err);
 422                 }
 423
 424         ret = 0;
 425
 426 end:
 427         ERR_print_errors(bio_err);
 428         X509_free(signer);
 429         X509_STORE_free(store);
 430         EVP_PKEY_free(key);
 431         X509_free(issuer);
 432         X509_free(cert);
 433         BIO_free(cbio);
 434         BIO_free(out);
 435         OCSP_REQUEST_free(req);
 436         OCSP_RESPONSE_free(resp);
 437         OCSP_BASICRESP_free(bs);
 438
 439         EXIT(ret);
 440 }
 441
 442 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer)
 443         {
 444         OCSP_CERTID *id;
 445         if(!issuer)
 446                 {
 447                 BIO_printf(bio_err, "No issuer certificate specified\n");
 448                 return 0;
 449                 }
 450         if(!*req) *req = OCSP_REQUEST_new();
 451         if(!*req) goto err;
 452         id = OCSP_cert_to_id(NULL, cert, issuer);
 453         if(!id) goto err;
 454         if(!OCSP_request_add0_id(*req, id)) goto err;
 455         return 1;
 456
 457         err:
 458         BIO_printf(bio_err, "Error Creating OCSP request\n");
 459         return 0;
 460         }
 461
 462 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer)
 463         {
 464         OCSP_CERTID *id;
 465         X509_NAME *iname;
 466         ASN1_BIT_STRING *ikey;
 467         ASN1_INTEGER *sno;
 468         if(!issuer)
 469                 {
 470                 BIO_printf(bio_err, "No issuer certificate specified\n");
 471                 return 0;
 472                 }
 473         if(!*req) *req = OCSP_REQUEST_new();
 474         if(!*req) goto err;
 475         iname = X509_get_subject_name(issuer);
 476         ikey = issuer->cert_info->key->public_key;
 477         sno = s2i_ASN1_INTEGER(NULL, serial);
 478         if(!sno)
 479                 {
 480                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 481                 return 0;
 482                 }
 483         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
 484         ASN1_INTEGER_free(sno);
 485         if(!id) goto err;
 486         if(!OCSP_request_add0_id(*req, id)) goto err;
 487         return 1;
 488
 489         err:
 490         BIO_printf(bio_err, "Error Creating OCSP request\n");
 491         return 0;
 492         }