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