bin/openssl/crl.c

   1 /* $OpenBSD: crl.c,v 1.11 2018/02/07 05:47:55 jsing Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62
  63 #include "apps.h"
  64
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/pem.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/x509v3.h>
  70
  71 static struct {
  72         char *cafile;
  73         char *capath;
  74         int crlnumber;
  75         int fingerprint;
  76         int hash;
  77         int hash_old;
  78         char *infile;
  79         int informat;
  80         int issuer;
  81         int lastupdate;
  82         char *nameopt;
  83         int nextupdate;
  84         int noout;
  85         char *outfile;
  86         int outformat;
  87         int text;
  88         int verify;
  89 } crl_config;
  90
  91 static struct option crl_options[] = {
  92         {
  93                 .name = "CAfile",
  94                 .argname = "file",
  95                 .desc = "Verify the CRL using certificates in the given file",
  96                 .type = OPTION_ARG,
  97                 .opt.arg = &crl_config.cafile,
  98         },
  99         {
 100                 .name = "CApath",
 101                 .argname = "path",
 102                 .desc = "Verify the CRL using certificates in the given path",
 103                 .type = OPTION_ARG,
 104                 .opt.arg = &crl_config.capath,
 105         },
 106         {
 107                 .name = "crlnumber",
 108                 .desc = "Print the CRL number",
 109                 .type = OPTION_FLAG_ORD,
 110                 .opt.flag = &crl_config.crlnumber,
 111         },
 112         {
 113                 .name = "fingerprint",
 114                 .desc = "Print the CRL fingerprint",
 115                 .type = OPTION_FLAG_ORD,
 116                 .opt.flag = &crl_config.fingerprint,
 117         },
 118         {
 119                 .name = "hash",
 120                 .desc = "Print the hash of the issuer name",
 121                 .type = OPTION_FLAG_ORD,
 122                 .opt.flag = &crl_config.hash,
 123         },
 124         {
 125                 .name = "hash_old",
 126                 .desc = "Print an old-style (MD5) hash of the issuer name",
 127                 .type = OPTION_FLAG_ORD,
 128                 .opt.flag = &crl_config.hash_old,
 129         },
 130         {
 131                 .name = "in",
 132                 .argname = "file",
 133                 .desc = "Input file to read from (stdin if unspecified)",
 134                 .type = OPTION_ARG,
 135                 .opt.arg = &crl_config.infile,
 136         },
 137         {
 138                 .name = "inform",
 139                 .argname = "format",
 140                 .desc = "Input format (DER or PEM)",
 141                 .type = OPTION_ARG_FORMAT,
 142                 .opt.value = &crl_config.informat,
 143         },
 144         {
 145                 .name = "issuer",
 146                 .desc = "Print the issuer name",
 147                 .type = OPTION_FLAG_ORD,
 148                 .opt.flag = &crl_config.issuer,
 149         },
 150         {
 151                 .name = "lastupdate",
 152                 .desc = "Print the lastUpdate field",
 153                 .type = OPTION_FLAG_ORD,
 154                 .opt.flag = &crl_config.lastupdate,
 155         },
 156         {
 157                 .name = "nameopt",
 158                 .argname = "options",
 159                 .desc = "Specify certificate name options",
 160                 .type = OPTION_ARG,
 161                 .opt.arg = &crl_config.nameopt,
 162         },
 163         {
 164                 .name = "nextupdate",
 165                 .desc = "Print the nextUpdate field",
 166                 .type = OPTION_FLAG_ORD,
 167                 .opt.flag = &crl_config.nextupdate,
 168         },
 169         {
 170                 .name = "noout",
 171                 .desc = "Do not output the encoded version of the CRL",
 172                 .type = OPTION_FLAG,
 173                 .opt.flag = &crl_config.noout,
 174         },
 175         {
 176                 .name = "out",
 177                 .argname = "file",
 178                 .desc = "Output file to write to (stdout if unspecified)",
 179                 .type = OPTION_ARG,
 180                 .opt.arg = &crl_config.outfile,
 181         },
 182         {
 183                 .name = "outform",
 184                 .argname = "format",
 185                 .desc = "Output format (DER or PEM)",
 186                 .type = OPTION_ARG_FORMAT,
 187                 .opt.value = &crl_config.outformat,
 188         },
 189         {
 190                 .name = "text",
 191                 .desc = "Print out the CRL in text form",
 192                 .type = OPTION_FLAG,
 193                 .opt.flag = &crl_config.text,
 194         },
 195         {
 196                 .name = "verify",
 197                 .desc = "Verify the signature on the CRL",
 198                 .type = OPTION_FLAG,
 199                 .opt.flag = &crl_config.verify,
 200         },
 201         {NULL},
 202 };
 203
 204 static void
 205 crl_usage(void)
 206 {
 207         fprintf(stderr,
 208             "usage: crl [-CAfile file] [-CApath dir] [-fingerprint] [-hash]\n"
 209             "    [-in file] [-inform DER | PEM] [-issuer] [-lastupdate]\n"
 210             "    [-nextupdate] [-noout] [-out file] [-outform DER | PEM]\n"
 211             "    [-text]\n\n");
 212         options_usage(crl_options);
 213 }
 214
 215 static X509_CRL *load_crl(char *file, int format);
 216 static BIO *bio_out = NULL;
 217
 218 int
 219 crl_main(int argc, char **argv)
 220 {
 221         unsigned long nmflag = 0;
 222         X509_CRL *x = NULL;
 223         int ret = 1, i;
 224         BIO *out = NULL;
 225         X509_STORE *store = NULL;
 226         X509_STORE_CTX ctx;
 227         X509_LOOKUP *lookup = NULL;
 228         X509_OBJECT xobj;
 229         EVP_PKEY *pkey;
 230         const EVP_MD *digest;
 231         char *digest_name = NULL;
 232
 233         if (single_execution) {
 234                 if (pledge("stdio cpath wpath rpath", NULL) == -1) {
 235                         perror("pledge");
 236                         exit(1);
 237                 }
 238         }
 239
 240         if (bio_out == NULL) {
 241                 if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
 242                         BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
 243                 }
 244         }
 245
 246         digest = EVP_sha1();
 247
 248         memset(&crl_config, 0, sizeof(crl_config));
 249         crl_config.informat = FORMAT_PEM;
 250         crl_config.outformat = FORMAT_PEM;
 251
 252         if (options_parse(argc, argv, crl_options, &digest_name, NULL) != 0) {
 253                 crl_usage();
 254                 goto end;
 255         }
 256
 257         if (crl_config.cafile != NULL || crl_config.capath != NULL)
 258                 crl_config.verify = 1;
 259
 260         if (crl_config.nameopt != NULL) {
 261                 if (set_name_ex(&nmflag, crl_config.nameopt) != 1) {
 262                         fprintf(stderr,
 263                             "Invalid -nameopt argument '%s'\n",
 264                             crl_config.nameopt);
 265                         goto end;
 266                 }
 267         }
 268
 269         if (digest_name != NULL) {
 270                 if ((digest = EVP_get_digestbyname(digest_name)) == NULL) {
 271                         fprintf(stderr,
 272                             "Unknown message digest algorithm '%s'\n",
 273                             digest_name);
 274                         goto end;
 275                 }
 276         }
 277
 278         x = load_crl(crl_config.infile, crl_config.informat);
 279         if (x == NULL)
 280                 goto end;
 281
 282         if (crl_config.verify) {
 283                 store = X509_STORE_new();
 284                 lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 285                 if (lookup == NULL)
 286                         goto end;
 287                 if (!X509_LOOKUP_load_file(lookup, crl_config.cafile,
 288                     X509_FILETYPE_PEM))
 289                         X509_LOOKUP_load_file(lookup, NULL,
 290                             X509_FILETYPE_DEFAULT);
 291
 292                 lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
 293                 if (lookup == NULL)
 294                         goto end;
 295                 if (!X509_LOOKUP_add_dir(lookup, crl_config.capath,
 296                     X509_FILETYPE_PEM))
 297                         X509_LOOKUP_add_dir(lookup, NULL,
 298                             X509_FILETYPE_DEFAULT);
 299                 ERR_clear_error();
 300
 301                 if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 302                         BIO_printf(bio_err,
 303                             "Error initialising X509 store\n");
 304                         goto end;
 305                 }
 306                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 307                     X509_CRL_get_issuer(x), &xobj);
 308                 if (i <= 0) {
 309                         BIO_printf(bio_err,
 310                             "Error getting CRL issuer certificate\n");
 311                         goto end;
 312                 }
 313                 pkey = X509_get_pubkey(xobj.data.x509);
 314                 X509_OBJECT_free_contents(&xobj);
 315                 if (!pkey) {
 316                         BIO_printf(bio_err,
 317                             "Error getting CRL issuer public key\n");
 318                         goto end;
 319                 }
 320                 i = X509_CRL_verify(x, pkey);
 321                 EVP_PKEY_free(pkey);
 322                 if (i < 0)
 323                         goto end;
 324                 if (i == 0)
 325                         BIO_printf(bio_err, "verify failure\n");
 326                 else
 327                         BIO_printf(bio_err, "verify OK\n");
 328         }
 329
 330         /* Print requested information the order that the flags were given. */
 331         for (i = 1; i <= argc; i++) {
 332                 if (crl_config.issuer == i) {
 333                         print_name(bio_out, "issuer=",
 334                             X509_CRL_get_issuer(x), nmflag);
 335                 }
 336                 if (crl_config.crlnumber == i) {
 337                         ASN1_INTEGER *crlnum;
 338                         crlnum = X509_CRL_get_ext_d2i(x,
 339                             NID_crl_number, NULL, NULL);
 340                         BIO_printf(bio_out, "crlNumber=");
 341                         if (crlnum) {
 342                                 i2a_ASN1_INTEGER(bio_out, crlnum);
 343                                 ASN1_INTEGER_free(crlnum);
 344                         } else
 345                                 BIO_puts(bio_out, "<NONE>");
 346                         BIO_printf(bio_out, "\n");
 347                 }
 348                 if (crl_config.hash == i) {
 349                         BIO_printf(bio_out, "%08lx\n",
 350                             X509_NAME_hash(X509_CRL_get_issuer(x)));
 351                 }
 352 #ifndef OPENSSL_NO_MD5
 353                 if (crl_config.hash_old == i) {
 354                         BIO_printf(bio_out, "%08lx\n",
 355                             X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 356                 }
 357 #endif
 358                 if (crl_config.lastupdate == i) {
 359                         BIO_printf(bio_out, "lastUpdate=");
 360                         ASN1_TIME_print(bio_out,
 361                             X509_CRL_get_lastUpdate(x));
 362                         BIO_printf(bio_out, "\n");
 363                 }
 364                 if (crl_config.nextupdate == i) {
 365                         BIO_printf(bio_out, "nextUpdate=");
 366                         if (X509_CRL_get_nextUpdate(x))
 367                                 ASN1_TIME_print(bio_out,
 368                                     X509_CRL_get_nextUpdate(x));
 369                         else
 370                                 BIO_printf(bio_out, "NONE");
 371                         BIO_printf(bio_out, "\n");
 372                 }
 373                 if (crl_config.fingerprint == i) {
 374                         int j;
 375                         unsigned int n;
 376                         unsigned char md[EVP_MAX_MD_SIZE];
 377
 378                         if (!X509_CRL_digest(x, digest, md, &n)) {
 379                                 BIO_printf(bio_err, "out of memory\n");
 380                                 goto end;
 381                         }
 382                         BIO_printf(bio_out, "%s Fingerprint=",
 383                             OBJ_nid2sn(EVP_MD_type(digest)));
 384                         for (j = 0; j < (int) n; j++) {
 385                                 BIO_printf(bio_out, "%02X%c", md[j],
 386                                     (j + 1 == (int)n) ? '\n' : ':');
 387                         }
 388                 }
 389         }
 390
 391         out = BIO_new(BIO_s_file());
 392         if (out == NULL) {
 393                 ERR_print_errors(bio_err);
 394                 goto end;
 395         }
 396         if (crl_config.outfile == NULL) {
 397                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 398         } else {
 399                 if (BIO_write_filename(out, crl_config.outfile) <= 0) {
 400                         perror(crl_config.outfile);
 401                         goto end;
 402                 }
 403         }
 404
 405         if (crl_config.text)
 406                 X509_CRL_print(out, x);
 407
 408         if (crl_config.noout) {
 409                 ret = 0;
 410                 goto end;
 411         }
 412         if (crl_config.outformat == FORMAT_ASN1)
 413                 i = (int) i2d_X509_CRL_bio(out, x);
 414         else if (crl_config.outformat == FORMAT_PEM)
 415                 i = PEM_write_bio_X509_CRL(out, x);
 416         else {
 417                 BIO_printf(bio_err,
 418                     "bad output format specified for outfile\n");
 419                 goto end;
 420         }
 421         if (!i) {
 422                 BIO_printf(bio_err, "unable to write CRL\n");
 423                 goto end;
 424         }
 425         ret = 0;
 426
 427  end:
 428         BIO_free_all(out);
 429         BIO_free_all(bio_out);
 430         bio_out = NULL;
 431         X509_CRL_free(x);
 432         if (store) {
 433                 X509_STORE_CTX_cleanup(&ctx);
 434                 X509_STORE_free(store);
 435         }
 436
 437         return (ret);
 438 }
 439
 440 static X509_CRL *
 441 load_crl(char *infile, int format)
 442 {
 443         X509_CRL *x = NULL;
 444         BIO *in = NULL;
 445
 446         in = BIO_new(BIO_s_file());
 447         if (in == NULL) {
 448                 ERR_print_errors(bio_err);
 449                 goto end;
 450         }
 451         if (infile == NULL)
 452                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 453         else {
 454                 if (BIO_read_filename(in, infile) <= 0) {
 455                         perror(infile);
 456                         goto end;
 457                 }
 458         }
 459         if (format == FORMAT_ASN1)
 460                 x = d2i_X509_CRL_bio(in, NULL);
 461         else if (format == FORMAT_PEM)
 462                 x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 463         else {
 464                 BIO_printf(bio_err,
 465                     "bad input format specified for input crl\n");
 466                 goto end;
 467         }
 468         if (x == NULL) {
 469                 BIO_printf(bio_err, "unable to load CRL\n");
 470                 ERR_print_errors(bio_err);
 471                 goto end;
 472         }
 473
 474  end:
 475         BIO_free(in);
 476         return (x);
 477 }