apps/crl.c

   1 /* apps/crl.c */
   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 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/x509v3.h>
  67 #include <openssl/pem.h>
  68
  69 #undef PROG
  70 #define PROG    crl_main
  71
  72 #undef POSTFIX
  73 #define POSTFIX ".rvk"
  74
  75 static const char *crl_usage[]={
  76 "usage: crl args\n",
  77 "\n",
  78 " -inform arg     - input format - default PEM (DER or PEM)\n",
  79 " -outform arg    - output format - default PEM\n",
  80 " -text           - print out a text format version\n",
  81 " -in arg         - input file - default stdin\n",
  82 " -out arg        - output file - default stdout\n",
  83 " -hash           - print hash value\n",
  84 " -fingerprint    - print the crl fingerprint\n",
  85 " -issuer         - print issuer DN\n",
  86 " -lastupdate     - lastUpdate field\n",
  87 " -nextupdate     - nextUpdate field\n",
  88 " -crlnumber      - print CRL number\n",
  89 " -noout          - no CRL output\n",
  90 " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
  91 " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
  92 " -nameopt arg    - various certificate name options\n",
  93 NULL
  94 };
  95
  96 static BIO *bio_out=NULL;
  97
  98 int MAIN(int, char **);
  99
 100 int MAIN(int argc, char **argv)
 101         {
 102         unsigned long nmflag = 0;
 103         X509_CRL *x=NULL;
 104         char *CAfile = NULL, *CApath = NULL;
 105         int ret=1,i,num,badops=0;
 106         BIO *out=NULL;
 107         int informat,outformat, keyformat;
 108         char *infile=NULL,*outfile=NULL, *crldiff = NULL, *keyfile = NULL;
 109         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
 110         int fingerprint = 0, crlnumber = 0;
 111         const char **pp;
 112         X509_STORE *store = NULL;
 113         X509_STORE_CTX ctx;
 114         X509_LOOKUP *lookup = NULL;
 115         X509_OBJECT xobj;
 116         EVP_PKEY *pkey;
 117         int do_ver = 0;
 118         const EVP_MD *md_alg,*digest=EVP_sha1();
 119
 120         apps_startup();
 121
 122         if (bio_err == NULL)
 123                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 124                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 125
 126         if (!load_config(bio_err, NULL))
 127                 goto end;
 128
 129         if (bio_out == NULL)
 130                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 131                         {
 132                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 133 #ifdef OPENSSL_SYS_VMS
 134                         {
 135                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 136                         bio_out = BIO_push(tmpbio, bio_out);
 137                         }
 138 #endif
 139                         }
 140
 141         informat=FORMAT_PEM;
 142         outformat=FORMAT_PEM;
 143         keyformat=FORMAT_PEM;
 144
 145         argc--;
 146         argv++;
 147         num=0;
 148         while (argc >= 1)
 149                 {
 150 #ifdef undef
 151                 if      (strcmp(*argv,"-p") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
 155                         }
 156 #endif
 157                 if      (strcmp(*argv,"-inform") == 0)
 158                         {
 159                         if (--argc < 1) goto bad;
 160                         informat=str2fmt(*(++argv));
 161                         }
 162                 else if (strcmp(*argv,"-outform") == 0)
 163                         {
 164                         if (--argc < 1) goto bad;
 165                         outformat=str2fmt(*(++argv));
 166                         }
 167                 else if (strcmp(*argv,"-in") == 0)
 168                         {
 169                         if (--argc < 1) goto bad;
 170                         infile= *(++argv);
 171                         }
 172                 else if (strcmp(*argv,"-gendelta") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         crldiff= *(++argv);
 176                         }
 177                 else if (strcmp(*argv,"-key") == 0)
 178                         {
 179                         if (--argc < 1) goto bad;
 180                         keyfile= *(++argv);
 181                         }
 182                 else if (strcmp(*argv,"-keyform") == 0)
 183                         {
 184                         if (--argc < 1) goto bad;
 185                         keyformat=str2fmt(*(++argv));
 186                         }
 187                 else if (strcmp(*argv,"-out") == 0)
 188                         {
 189                         if (--argc < 1) goto bad;
 190                         outfile= *(++argv);
 191                         }
 192                 else if (strcmp(*argv,"-CApath") == 0)
 193                         {
 194                         if (--argc < 1) goto bad;
 195                         CApath = *(++argv);
 196                         do_ver = 1;
 197                         }
 198                 else if (strcmp(*argv,"-CAfile") == 0)
 199                         {
 200                         if (--argc < 1) goto bad;
 201                         CAfile = *(++argv);
 202                         do_ver = 1;
 203                         }
 204                 else if (strcmp(*argv,"-verify") == 0)
 205                         do_ver = 1;
 206                 else if (strcmp(*argv,"-text") == 0)
 207                         text = 1;
 208                 else if (strcmp(*argv,"-hash") == 0)
 209                         hash= ++num;
 210                 else if (strcmp(*argv,"-nameopt") == 0)
 211                         {
 212                         if (--argc < 1) goto bad;
 213                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
 214                         }
 215                 else if (strcmp(*argv,"-issuer") == 0)
 216                         issuer= ++num;
 217                 else if (strcmp(*argv,"-lastupdate") == 0)
 218                         lastupdate= ++num;
 219                 else if (strcmp(*argv,"-nextupdate") == 0)
 220                         nextupdate= ++num;
 221                 else if (strcmp(*argv,"-noout") == 0)
 222                         noout= ++num;
 223                 else if (strcmp(*argv,"-fingerprint") == 0)
 224                         fingerprint= ++num;
 225                 else if (strcmp(*argv,"-crlnumber") == 0)
 226                         crlnumber= ++num;
 227                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
 228                         {
 229                         /* ok */
 230                         digest=md_alg;
 231                         }
 232                 else
 233                         {
 234                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 235                         badops=1;
 236                         break;
 237                         }
 238                 argc--;
 239                 argv++;
 240                 }
 241
 242         if (badops)
 243                 {
 244 bad:
 245                 for (pp=crl_usage; (*pp != NULL); pp++)
 246                         BIO_printf(bio_err,"%s",*pp);
 247                 goto end;
 248                 }
 249
 250         ERR_load_crypto_strings();
 251         x=load_crl(infile,informat);
 252         if (x == NULL) { goto end; }
 253
 254         if(do_ver) {
 255                 store = X509_STORE_new();
 256                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 257                 if (lookup == NULL) goto end;
 258                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 259                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 260
 261                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 262                 if (lookup == NULL) goto end;
 263                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 264                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 265                 ERR_clear_error();
 266
 267                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 268                         BIO_printf(bio_err,
 269                                 "Error initialising X509 store\n");
 270                         goto end;
 271                 }
 272
 273                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 274                                         X509_CRL_get_issuer(x), &xobj);
 275                 if(i <= 0) {
 276                         BIO_printf(bio_err,
 277                                 "Error getting CRL issuer certificate\n");
 278                         goto end;
 279                 }
 280                 pkey = X509_get_pubkey(xobj.data.x509);
 281                 X509_OBJECT_free_contents(&xobj);
 282                 if(!pkey) {
 283                         BIO_printf(bio_err,
 284                                 "Error getting CRL issuer public key\n");
 285                         goto end;
 286                 }
 287                 i = X509_CRL_verify(x, pkey);
 288                 EVP_PKEY_free(pkey);
 289                 if(i < 0) goto end;
 290                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
 291                 else BIO_printf(bio_err, "verify OK\n");
 292         }
 293
 294         if (crldiff)
 295                 {
 296                 X509_CRL *newcrl, *delta;
 297                 if (!keyfile)
 298                         {
 299                         BIO_puts(bio_err, "Missing CRL signing key\n");
 300                         goto end;
 301                         }
 302                 newcrl = load_crl(crldiff,informat);
 303                 if (!newcrl)
 304                         goto end;
 305                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
 306                                         "CRL signing key");
 307                 if (!pkey)
 308                         {
 309                         X509_CRL_free(newcrl);
 310                         goto end;
 311                         }
 312                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 313                 X509_CRL_free(newcrl);
 314                 EVP_PKEY_free(pkey);
 315                 if (delta)
 316                         {
 317                         X509_CRL_free(x);
 318                         x = delta;
 319                         }
 320                 else
 321                         {
 322                         BIO_puts(bio_err, "Error creating delta CRL\n");
 323                         goto end;
 324                         }
 325                 }
 326
 327         if (num)
 328                 {
 329                 for (i=1; i<=num; i++)
 330                         {
 331                         if (issuer == i)
 332                                 {
 333                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
 334                                 }
 335                         if (crlnumber == i)
 336                                 {
 337                                 ASN1_INTEGER *crlnum;
 338                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
 339                                                               NULL, NULL);
 340                                 BIO_printf(bio_out,"crlNumber=");
 341                                 if (crlnum)
 342                                         {
 343                                         i2a_ASN1_INTEGER(bio_out, crlnum);
 344                                         ASN1_INTEGER_free(crlnum);
 345                                         }
 346                                 else
 347                                         BIO_puts(bio_out, "<NONE>");
 348                                 BIO_printf(bio_out,"\n");
 349                                 }
 350                         if (hash == i)
 351                                 {
 352                                 BIO_printf(bio_out,"%08lx\n",
 353                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
 354                                 }
 355                         if (lastupdate == i)
 356                                 {
 357                                 BIO_printf(bio_out,"lastUpdate=");
 358                                 ASN1_TIME_print(bio_out,
 359                                                 X509_CRL_get_lastUpdate(x));
 360                                 BIO_printf(bio_out,"\n");
 361                                 }
 362                         if (nextupdate == i)
 363                                 {
 364                                 BIO_printf(bio_out,"nextUpdate=");
 365                                 if (X509_CRL_get_nextUpdate(x))
 366                                         ASN1_TIME_print(bio_out,
 367                                                 X509_CRL_get_nextUpdate(x));
 368                                 else
 369                                         BIO_printf(bio_out,"NONE");
 370                                 BIO_printf(bio_out,"\n");
 371                                 }
 372                         if (fingerprint == i)
 373                                 {
 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                                         {
 380                                         BIO_printf(bio_err,"out of memory\n");
 381                                         goto end;
 382                                         }
 383                                 BIO_printf(bio_out,"%s Fingerprint=",
 384                                                 OBJ_nid2sn(EVP_MD_type(digest)));
 385                                 for (j=0; j<(int)n; j++)
 386                                         {
 387                                         BIO_printf(bio_out,"%02X%c",md[j],
 388                                                 (j+1 == (int)n)
 389                                                 ?'\n':':');
 390                                         }
 391                                 }
 392                         }
 393                 }
 394
 395         out=BIO_new(BIO_s_file());
 396         if (out == NULL)
 397                 {
 398                 ERR_print_errors(bio_err);
 399                 goto end;
 400                 }
 401
 402         if (outfile == NULL)
 403                 {
 404                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 405 #ifdef OPENSSL_SYS_VMS
 406                 {
 407                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 408                 out = BIO_push(tmpbio, out);
 409                 }
 410 #endif
 411                 }
 412         else
 413                 {
 414                 if (BIO_write_filename(out,outfile) <= 0)
 415                         {
 416                         perror(outfile);
 417                         goto end;
 418                         }
 419                 }
 420
 421         if (text) X509_CRL_print(out, x);
 422
 423         if (noout)
 424                 {
 425                 ret = 0;
 426                 goto end;
 427                 }
 428
 429         if      (outformat == FORMAT_ASN1)
 430                 i=(int)i2d_X509_CRL_bio(out,x);
 431         else if (outformat == FORMAT_PEM)
 432                 i=PEM_write_bio_X509_CRL(out,x);
 433         else
 434                 {
 435                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 436                 goto end;
 437                 }
 438         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
 439         ret=0;
 440 end:
 441         if (ret != 0)
 442                 ERR_print_errors(bio_err);
 443         BIO_free_all(out);
 444         BIO_free_all(bio_out);
 445         bio_out=NULL;
 446         X509_CRL_free(x);
 447         if(store) {
 448                 X509_STORE_CTX_cleanup(&ctx);
 449                 X509_STORE_free(store);
 450         }
 451         apps_shutdown();
 452         OPENSSL_EXIT(ret);
 453         }