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,badsig=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 (strcmp(*argv,"-badsig") == 0)
 228                         badsig = 1;
 229                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
 230                         {
 231                         /* ok */
 232                         digest=md_alg;
 233                         }
 234                 else
 235                         {
 236                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 237                         badops=1;
 238                         break;
 239                         }
 240                 argc--;
 241                 argv++;
 242                 }
 243
 244         if (badops)
 245                 {
 246 bad:
 247                 for (pp=crl_usage; (*pp != NULL); pp++)
 248                         BIO_printf(bio_err,"%s",*pp);
 249                 goto end;
 250                 }
 251
 252         ERR_load_crypto_strings();
 253         x=load_crl(infile,informat);
 254         if (x == NULL) { goto end; }
 255
 256         if(do_ver) {
 257                 store = X509_STORE_new();
 258                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 259                 if (lookup == NULL) goto end;
 260                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 261                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 262
 263                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 264                 if (lookup == NULL) goto end;
 265                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 266                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 267                 ERR_clear_error();
 268
 269                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 270                         BIO_printf(bio_err,
 271                                 "Error initialising X509 store\n");
 272                         goto end;
 273                 }
 274
 275                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 276                                         X509_CRL_get_issuer(x), &xobj);
 277                 if(i <= 0) {
 278                         BIO_printf(bio_err,
 279                                 "Error getting CRL issuer certificate\n");
 280                         goto end;
 281                 }
 282                 pkey = X509_get_pubkey(xobj.data.x509);
 283                 X509_OBJECT_free_contents(&xobj);
 284                 if(!pkey) {
 285                         BIO_printf(bio_err,
 286                                 "Error getting CRL issuer public key\n");
 287                         goto end;
 288                 }
 289                 i = X509_CRL_verify(x, pkey);
 290                 EVP_PKEY_free(pkey);
 291                 if(i < 0) goto end;
 292                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
 293                 else BIO_printf(bio_err, "verify OK\n");
 294         }
 295
 296         if (crldiff)
 297                 {
 298                 X509_CRL *newcrl, *delta;
 299                 if (!keyfile)
 300                         {
 301                         BIO_puts(bio_err, "Missing CRL signing key\n");
 302                         goto end;
 303                         }
 304                 newcrl = load_crl(crldiff,informat);
 305                 if (!newcrl)
 306                         goto end;
 307                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
 308                                         "CRL signing key");
 309                 if (!pkey)
 310                         {
 311                         X509_CRL_free(newcrl);
 312                         goto end;
 313                         }
 314                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 315                 X509_CRL_free(newcrl);
 316                 EVP_PKEY_free(pkey);
 317                 if (delta)
 318                         {
 319                         X509_CRL_free(x);
 320                         x = delta;
 321                         }
 322                 else
 323                         {
 324                         BIO_puts(bio_err, "Error creating delta CRL\n");
 325                         goto end;
 326                         }
 327                 }
 328
 329         if (num)
 330                 {
 331                 for (i=1; i<=num; i++)
 332                         {
 333                         if (issuer == i)
 334                                 {
 335                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
 336                                 }
 337                         if (crlnumber == i)
 338                                 {
 339                                 ASN1_INTEGER *crlnum;
 340                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
 341                                                               NULL, NULL);
 342                                 BIO_printf(bio_out,"crlNumber=");
 343                                 if (crlnum)
 344                                         {
 345                                         i2a_ASN1_INTEGER(bio_out, crlnum);
 346                                         ASN1_INTEGER_free(crlnum);
 347                                         }
 348                                 else
 349                                         BIO_puts(bio_out, "<NONE>");
 350                                 BIO_printf(bio_out,"\n");
 351                                 }
 352                         if (hash == i)
 353                                 {
 354                                 BIO_printf(bio_out,"%08lx\n",
 355                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
 356                                 }
 357                         if (lastupdate == i)
 358                                 {
 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 (nextupdate == i)
 365                                 {
 366                                 BIO_printf(bio_out,"nextUpdate=");
 367                                 if (X509_CRL_get_nextUpdate(x))
 368                                         ASN1_TIME_print(bio_out,
 369                                                 X509_CRL_get_nextUpdate(x));
 370                                 else
 371                                         BIO_printf(bio_out,"NONE");
 372                                 BIO_printf(bio_out,"\n");
 373                                 }
 374                         if (fingerprint == i)
 375                                 {
 376                                 int j;
 377                                 unsigned int n;
 378                                 unsigned char md[EVP_MAX_MD_SIZE];
 379
 380                                 if (!X509_CRL_digest(x,digest,md,&n))
 381                                         {
 382                                         BIO_printf(bio_err,"out of memory\n");
 383                                         goto end;
 384                                         }
 385                                 BIO_printf(bio_out,"%s Fingerprint=",
 386                                                 OBJ_nid2sn(EVP_MD_type(digest)));
 387                                 for (j=0; j<(int)n; j++)
 388                                         {
 389                                         BIO_printf(bio_out,"%02X%c",md[j],
 390                                                 (j+1 == (int)n)
 391                                                 ?'\n':':');
 392                                         }
 393                                 }
 394                         }
 395                 }
 396
 397         out=BIO_new(BIO_s_file());
 398         if (out == NULL)
 399                 {
 400                 ERR_print_errors(bio_err);
 401                 goto end;
 402                 }
 403
 404         if (outfile == NULL)
 405                 {
 406                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 407 #ifdef OPENSSL_SYS_VMS
 408                 {
 409                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 410                 out = BIO_push(tmpbio, out);
 411                 }
 412 #endif
 413                 }
 414         else
 415                 {
 416                 if (BIO_write_filename(out,outfile) <= 0)
 417                         {
 418                         perror(outfile);
 419                         goto end;
 420                         }
 421                 }
 422
 423         if (text) X509_CRL_print(out, x);
 424
 425         if (noout)
 426                 {
 427                 ret = 0;
 428                 goto end;
 429                 }
 430
 431         if (badsig)
 432                 x->signature->data[x->signature->length - 1] ^= 0x1;
 433
 434         if      (outformat == FORMAT_ASN1)
 435                 i=(int)i2d_X509_CRL_bio(out,x);
 436         else if (outformat == FORMAT_PEM)
 437                 i=PEM_write_bio_X509_CRL(out,x);
 438         else
 439                 {
 440                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 441                 goto end;
 442                 }
 443         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
 444         ret=0;
 445 end:
 446         if (ret != 0)
 447                 ERR_print_errors(bio_err);
 448         BIO_free_all(out);
 449         BIO_free_all(bio_out);
 450         bio_out=NULL;
 451         X509_CRL_free(x);
 452         if(store) {
 453                 X509_STORE_CTX_cleanup(&ctx);
 454                 X509_STORE_free(store);
 455         }
 456         apps_shutdown();
 457         OPENSSL_EXIT(ret);
 458         }