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 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 " -issuer         - print issuer DN\n",
  85 " -lastupdate     - lastUpdate field\n",
  86 " -nextupdate     - nextUpdate field\n",
  87 " -noout          - no CRL output\n",
  88 " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
  89 " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
  90 NULL
  91 };
  92
  93 static X509_CRL *load_crl(char *file, int format);
  94 static BIO *bio_out=NULL;
  95
  96 int MAIN(int, char **);
  97
  98 int MAIN(int argc, char **argv)
  99         {
 100         X509_CRL *x=NULL;
 101         char *CAfile = NULL, *CApath = NULL;
 102         int ret=1,i,num,badops=0;
 103         BIO *out=NULL;
 104         int informat,outformat;
 105         char *infile=NULL,*outfile=NULL;
 106         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
 107         int fingerprint = 0;
 108         char **pp,buf[256];
 109         X509_STORE *store = NULL;
 110         X509_STORE_CTX ctx;
 111         X509_LOOKUP *lookup = NULL;
 112         X509_OBJECT xobj;
 113         EVP_PKEY *pkey;
 114         int do_ver = 0;
 115         const EVP_MD *md_alg,*digest=EVP_md5();
 116
 117         apps_startup();
 118
 119         if (bio_err == NULL)
 120                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 121                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 122
 123         if (!load_config(bio_err, NULL))
 124                 goto end;
 125
 126         if (bio_out == NULL)
 127                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 128                         {
 129                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 130 #ifdef OPENSSL_SYS_VMS
 131                         {
 132                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 133                         bio_out = BIO_push(tmpbio, bio_out);
 134                         }
 135 #endif
 136                         }
 137
 138         informat=FORMAT_PEM;
 139         outformat=FORMAT_PEM;
 140
 141         argc--;
 142         argv++;
 143         num=0;
 144         while (argc >= 1)
 145                 {
 146 #ifdef undef
 147                 if      (strcmp(*argv,"-p") == 0)
 148                         {
 149                         if (--argc < 1) goto bad;
 150                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
 151                         }
 152 #endif
 153                 if      (strcmp(*argv,"-inform") == 0)
 154                         {
 155                         if (--argc < 1) goto bad;
 156                         informat=str2fmt(*(++argv));
 157                         }
 158                 else if (strcmp(*argv,"-outform") == 0)
 159                         {
 160                         if (--argc < 1) goto bad;
 161                         outformat=str2fmt(*(++argv));
 162                         }
 163                 else if (strcmp(*argv,"-in") == 0)
 164                         {
 165                         if (--argc < 1) goto bad;
 166                         infile= *(++argv);
 167                         }
 168                 else if (strcmp(*argv,"-out") == 0)
 169                         {
 170                         if (--argc < 1) goto bad;
 171                         outfile= *(++argv);
 172                         }
 173                 else if (strcmp(*argv,"-CApath") == 0)
 174                         {
 175                         if (--argc < 1) goto bad;
 176                         CApath = *(++argv);
 177                         do_ver = 1;
 178                         }
 179                 else if (strcmp(*argv,"-CAfile") == 0)
 180                         {
 181                         if (--argc < 1) goto bad;
 182                         CAfile = *(++argv);
 183                         do_ver = 1;
 184                         }
 185                 else if (strcmp(*argv,"-verify") == 0)
 186                         do_ver = 1;
 187                 else if (strcmp(*argv,"-text") == 0)
 188                         text = 1;
 189                 else if (strcmp(*argv,"-hash") == 0)
 190                         hash= ++num;
 191                 else if (strcmp(*argv,"-issuer") == 0)
 192                         issuer= ++num;
 193                 else if (strcmp(*argv,"-lastupdate") == 0)
 194                         lastupdate= ++num;
 195                 else if (strcmp(*argv,"-nextupdate") == 0)
 196                         nextupdate= ++num;
 197                 else if (strcmp(*argv,"-noout") == 0)
 198                         noout= ++num;
 199                 else if (strcmp(*argv,"-fingerprint") == 0)
 200                         fingerprint= ++num;
 201                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
 202                         {
 203                         /* ok */
 204                         digest=md_alg;
 205                         }
 206                 else
 207                         {
 208                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 209                         badops=1;
 210                         break;
 211                         }
 212                 argc--;
 213                 argv++;
 214                 }
 215
 216         if (badops)
 217                 {
 218 bad:
 219                 for (pp=crl_usage; (*pp != NULL); pp++)
 220                         BIO_printf(bio_err,"%s",*pp);
 221                 goto end;
 222                 }
 223
 224         ERR_load_crypto_strings();
 225         x=load_crl(infile,informat);
 226         if (x == NULL) { goto end; }
 227
 228         if(do_ver) {
 229                 store = X509_STORE_new();
 230                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 231                 if (lookup == NULL) goto end;
 232                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 233                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 234
 235                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 236                 if (lookup == NULL) goto end;
 237                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 238                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 239                 ERR_clear_error();
 240
 241                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 242                         BIO_printf(bio_err,
 243                                 "Error initialising X509 store\n");
 244                         goto end;
 245                 }
 246
 247                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 248                                         X509_CRL_get_issuer(x), &xobj);
 249                 if(i <= 0) {
 250                         BIO_printf(bio_err,
 251                                 "Error getting CRL issuer certificate\n");
 252                         goto end;
 253                 }
 254                 pkey = X509_get_pubkey(xobj.data.x509);
 255                 X509_OBJECT_free_contents(&xobj);
 256                 if(!pkey) {
 257                         BIO_printf(bio_err,
 258                                 "Error getting CRL issuer public key\n");
 259                         goto end;
 260                 }
 261                 i = X509_CRL_verify(x, pkey);
 262                 EVP_PKEY_free(pkey);
 263                 if(i < 0) goto end;
 264                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
 265                 else BIO_printf(bio_err, "verify OK\n");
 266         }
 267
 268         if (num)
 269                 {
 270                 for (i=1; i<=num; i++)
 271                         {
 272                         if (issuer == i)
 273                                 {
 274                                 X509_NAME_oneline(X509_CRL_get_issuer(x),
 275                                                                 buf,256);
 276                                 BIO_printf(bio_out,"issuer= %s\n",buf);
 277                                 }
 278
 279                         if (hash == i)
 280                                 {
 281                                 BIO_printf(bio_out,"%08lx\n",
 282                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
 283                                 }
 284                         if (lastupdate == i)
 285                                 {
 286                                 BIO_printf(bio_out,"lastUpdate=");
 287                                 ASN1_TIME_print(bio_out,
 288                                                 X509_CRL_get_lastUpdate(x));
 289                                 BIO_printf(bio_out,"\n");
 290                                 }
 291                         if (nextupdate == i)
 292                                 {
 293                                 BIO_printf(bio_out,"nextUpdate=");
 294                                 if (X509_CRL_get_nextUpdate(x))
 295                                         ASN1_TIME_print(bio_out,
 296                                                 X509_CRL_get_nextUpdate(x));
 297                                 else
 298                                         BIO_printf(bio_out,"NONE");
 299                                 BIO_printf(bio_out,"\n");
 300                                 }
 301                         if (fingerprint == i)
 302                                 {
 303                                 int j;
 304                                 unsigned int n;
 305                                 unsigned char md[EVP_MAX_MD_SIZE];
 306
 307                                 if (!X509_CRL_digest(x,digest,md,&n))
 308                                         {
 309                                         BIO_printf(bio_err,"out of memory\n");
 310                                         goto end;
 311                                         }
 312                                 BIO_printf(bio_out,"%s Fingerprint=",
 313                                                 OBJ_nid2sn(EVP_MD_type(digest)));
 314                                 for (j=0; j<(int)n; j++)
 315                                         {
 316                                         BIO_printf(bio_out,"%02X%c",md[j],
 317                                                 (j+1 == (int)n)
 318                                                 ?'\n':':');
 319                                         }
 320                                 }
 321                         }
 322                 }
 323
 324         out=BIO_new(BIO_s_file());
 325         if (out == NULL)
 326                 {
 327                 ERR_print_errors(bio_err);
 328                 goto end;
 329                 }
 330
 331         if (outfile == NULL)
 332                 {
 333                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 334 #ifdef OPENSSL_SYS_VMS
 335                 {
 336                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 337                 out = BIO_push(tmpbio, out);
 338                 }
 339 #endif
 340                 }
 341         else
 342                 {
 343                 if (BIO_write_filename(out,outfile) <= 0)
 344                         {
 345                         perror(outfile);
 346                         goto end;
 347                         }
 348                 }
 349
 350         if (text) X509_CRL_print(out, x);
 351
 352         if (noout) goto end;
 353
 354         if      (outformat == FORMAT_ASN1)
 355                 i=(int)i2d_X509_CRL_bio(out,x);
 356         else if (outformat == FORMAT_PEM)
 357                 i=PEM_write_bio_X509_CRL(out,x);
 358         else
 359                 {
 360                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 361                 goto end;
 362                 }
 363         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
 364         ret=0;
 365 end:
 366         BIO_free_all(out);
 367         BIO_free_all(bio_out);
 368         bio_out=NULL;
 369         X509_CRL_free(x);
 370         if(store) {
 371                 X509_STORE_CTX_cleanup(&ctx);
 372                 X509_STORE_free(store);
 373         }
 374         apps_shutdown();
 375         EXIT(ret);
 376         }
 377
 378 static X509_CRL *load_crl(char *infile, int format)
 379         {
 380         X509_CRL *x=NULL;
 381         BIO *in=NULL;
 382
 383         in=BIO_new(BIO_s_file());
 384         if (in == NULL)
 385                 {
 386                 ERR_print_errors(bio_err);
 387                 goto end;
 388                 }
 389
 390         if (infile == NULL)
 391                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 392         else
 393                 {
 394                 if (BIO_read_filename(in,infile) <= 0)
 395                         {
 396                         perror(infile);
 397                         goto end;
 398                         }
 399                 }
 400         if      (format == FORMAT_ASN1)
 401                 x=d2i_X509_CRL_bio(in,NULL);
 402         else if (format == FORMAT_PEM)
 403                 x=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL);
 404         else    {
 405                 BIO_printf(bio_err,"bad input format specified for input crl\n");
 406                 goto end;
 407                 }
 408         if (x == NULL)
 409                 {
 410                 BIO_printf(bio_err,"unable to load CRL\n");
 411                 ERR_print_errors(bio_err);
 412                 goto end;
 413                 }
 414
 415 end:
 416         BIO_free(in);
 417         return(x);
 418         }
 419