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 X509_CRL *load_crl(char *file, int format);
  97 static BIO *bio_out=NULL;
  98
  99 int MAIN(int, char **);
 100
 101 int MAIN(int argc, char **argv)
 102         {
 103         unsigned long nmflag = 0;
 104         X509_CRL *x=NULL;
 105         char *CAfile = NULL, *CApath = NULL;
 106         int ret=1,i,num,badops=0;
 107         BIO *out=NULL;
 108         int informat,outformat, keyformat;
 109         char *infile=NULL,*outfile=NULL, *crldiff = NULL, *keyfile = NULL;
 110         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
 111         int fingerprint = 0, crlnumber = 0;
 112         const char **pp;
 113         X509_STORE *store = NULL;
 114         X509_STORE_CTX ctx;
 115         X509_LOOKUP *lookup = NULL;
 116         X509_OBJECT xobj;
 117         EVP_PKEY *pkey;
 118         int do_ver = 0;
 119         const EVP_MD *md_alg,*digest=EVP_sha1();
 120
 121         apps_startup();
 122
 123         if (bio_err == NULL)
 124                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 125                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 126
 127         if (!load_config(bio_err, NULL))
 128                 goto end;
 129
 130         if (bio_out == NULL)
 131                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 132                         {
 133                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 134 #ifdef OPENSSL_SYS_VMS
 135                         {
 136                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 137                         bio_out = BIO_push(tmpbio, bio_out);
 138                         }
 139 #endif
 140                         }
 141
 142         informat=FORMAT_PEM;
 143         outformat=FORMAT_PEM;
 144         keyformat=FORMAT_PEM;
 145
 146         argc--;
 147         argv++;
 148         num=0;
 149         while (argc >= 1)
 150                 {
 151 #ifdef undef
 152                 if      (strcmp(*argv,"-p") == 0)
 153                         {
 154                         if (--argc < 1) goto bad;
 155                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
 156                         }
 157 #endif
 158                 if      (strcmp(*argv,"-inform") == 0)
 159                         {
 160                         if (--argc < 1) goto bad;
 161                         informat=str2fmt(*(++argv));
 162                         }
 163                 else if (strcmp(*argv,"-outform") == 0)
 164                         {
 165                         if (--argc < 1) goto bad;
 166                         outformat=str2fmt(*(++argv));
 167                         }
 168                 else if (strcmp(*argv,"-in") == 0)
 169                         {
 170                         if (--argc < 1) goto bad;
 171                         infile= *(++argv);
 172                         }
 173                 else if (strcmp(*argv,"-gendelta") == 0)
 174                         {
 175                         if (--argc < 1) goto bad;
 176                         crldiff= *(++argv);
 177                         }
 178                 else if (strcmp(*argv,"-key") == 0)
 179                         {
 180                         if (--argc < 1) goto bad;
 181                         keyfile= *(++argv);
 182                         }
 183                 else if (strcmp(*argv,"-keyform") == 0)
 184                         {
 185                         if (--argc < 1) goto bad;
 186                         keyformat=str2fmt(*(++argv));
 187                         }
 188                 else if (strcmp(*argv,"-out") == 0)
 189                         {
 190                         if (--argc < 1) goto bad;
 191                         outfile= *(++argv);
 192                         }
 193                 else if (strcmp(*argv,"-CApath") == 0)
 194                         {
 195                         if (--argc < 1) goto bad;
 196                         CApath = *(++argv);
 197                         do_ver = 1;
 198                         }
 199                 else if (strcmp(*argv,"-CAfile") == 0)
 200                         {
 201                         if (--argc < 1) goto bad;
 202                         CAfile = *(++argv);
 203                         do_ver = 1;
 204                         }
 205                 else if (strcmp(*argv,"-verify") == 0)
 206                         do_ver = 1;
 207                 else if (strcmp(*argv,"-text") == 0)
 208                         text = 1;
 209                 else if (strcmp(*argv,"-hash") == 0)
 210                         hash= ++num;
 211                 else if (strcmp(*argv,"-nameopt") == 0)
 212                         {
 213                         if (--argc < 1) goto bad;
 214                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
 215                         }
 216                 else if (strcmp(*argv,"-issuer") == 0)
 217                         issuer= ++num;
 218                 else if (strcmp(*argv,"-lastupdate") == 0)
 219                         lastupdate= ++num;
 220                 else if (strcmp(*argv,"-nextupdate") == 0)
 221                         nextupdate= ++num;
 222                 else if (strcmp(*argv,"-noout") == 0)
 223                         noout= ++num;
 224                 else if (strcmp(*argv,"-fingerprint") == 0)
 225                         fingerprint= ++num;
 226                 else if (strcmp(*argv,"-crlnumber") == 0)
 227                         crlnumber= ++num;
 228                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
 229                         {
 230                         /* ok */
 231                         digest=md_alg;
 232                         }
 233                 else
 234                         {
 235                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 236                         badops=1;
 237                         break;
 238                         }
 239                 argc--;
 240                 argv++;
 241                 }
 242
 243         if (badops)
 244                 {
 245 bad:
 246                 for (pp=crl_usage; (*pp != NULL); pp++)
 247                         BIO_printf(bio_err,"%s",*pp);
 248                 goto end;
 249                 }
 250
 251         ERR_load_crypto_strings();
 252         x=load_crl(infile,informat);
 253         if (x == NULL) { goto end; }
 254
 255         if(do_ver) {
 256                 store = X509_STORE_new();
 257                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 258                 if (lookup == NULL) goto end;
 259                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 260                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 261
 262                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 263                 if (lookup == NULL) goto end;
 264                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 265                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 266                 ERR_clear_error();
 267
 268                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 269                         BIO_printf(bio_err,
 270                                 "Error initialising X509 store\n");
 271                         goto end;
 272                 }
 273
 274                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 275                                         X509_CRL_get_issuer(x), &xobj);
 276                 if(i <= 0) {
 277                         BIO_printf(bio_err,
 278                                 "Error getting CRL issuer certificate\n");
 279                         goto end;
 280                 }
 281                 pkey = X509_get_pubkey(xobj.data.x509);
 282                 X509_OBJECT_free_contents(&xobj);
 283                 if(!pkey) {
 284                         BIO_printf(bio_err,
 285                                 "Error getting CRL issuer public key\n");
 286                         goto end;
 287                 }
 288                 i = X509_CRL_verify(x, pkey);
 289                 EVP_PKEY_free(pkey);
 290                 if(i < 0) goto end;
 291                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
 292                 else BIO_printf(bio_err, "verify OK\n");
 293         }
 294
 295         if (crldiff)
 296                 {
 297                 X509_CRL *newcrl, *delta;
 298                 if (!keyfile)
 299                         {
 300                         BIO_puts(bio_err, "Missing CRL signing key\n");
 301                         goto end;
 302                         }
 303                 newcrl = load_crl(crldiff,informat);
 304                 if (!newcrl)
 305                         goto end;
 306                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
 307                                         "CRL signing key");
 308                 if (!pkey)
 309                         {
 310                         X509_CRL_free(newcrl);
 311                         goto end;
 312                         }
 313                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 314                 X509_CRL_free(newcrl);
 315                 EVP_PKEY_free(pkey);
 316                 if (delta)
 317                         {
 318                         X509_CRL_free(x);
 319                         x = delta;
 320                         }
 321                 else
 322                         {
 323                         BIO_puts(bio_err, "Error creating delta CRL\n");
 324                         goto end;
 325                         }
 326                 }
 327
 328         if (num)
 329                 {
 330                 for (i=1; i<=num; i++)
 331                         {
 332                         if (issuer == i)
 333                                 {
 334                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
 335                                 }
 336                         if (crlnumber == i)
 337                                 {
 338                                 ASN1_INTEGER *crlnum;
 339                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
 340                                                               NULL, NULL);
 341                                 BIO_printf(bio_out,"crlNumber=");
 342                                 if (crlnum)
 343                                         {
 344                                         i2a_ASN1_INTEGER(bio_out, crlnum);
 345                                         ASN1_INTEGER_free(crlnum);
 346                                         }
 347                                 else
 348                                         BIO_puts(bio_out, "<NONE>");
 349                                 BIO_printf(bio_out,"\n");
 350                                 }
 351                         if (hash == i)
 352                                 {
 353                                 BIO_printf(bio_out,"%08lx\n",
 354                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
 355                                 }
 356                         if (lastupdate == i)
 357                                 {
 358                                 BIO_printf(bio_out,"lastUpdate=");
 359                                 ASN1_TIME_print(bio_out,
 360                                                 X509_CRL_get_lastUpdate(x));
 361                                 BIO_printf(bio_out,"\n");
 362                                 }
 363                         if (nextupdate == i)
 364                                 {
 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 (fingerprint == i)
 374                                 {
 375                                 int j;
 376                                 unsigned int n;
 377                                 unsigned char md[EVP_MAX_MD_SIZE];
 378
 379                                 if (!X509_CRL_digest(x,digest,md,&n))
 380                                         {
 381                                         BIO_printf(bio_err,"out of memory\n");
 382                                         goto end;
 383                                         }
 384                                 BIO_printf(bio_out,"%s Fingerprint=",
 385                                                 OBJ_nid2sn(EVP_MD_type(digest)));
 386                                 for (j=0; j<(int)n; j++)
 387                                         {
 388                                         BIO_printf(bio_out,"%02X%c",md[j],
 389                                                 (j+1 == (int)n)
 390                                                 ?'\n':':');
 391                                         }
 392                                 }
 393                         }
 394                 }
 395
 396         out=BIO_new(BIO_s_file());
 397         if (out == NULL)
 398                 {
 399                 ERR_print_errors(bio_err);
 400                 goto end;
 401                 }
 402
 403         if (outfile == NULL)
 404                 {
 405                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 406 #ifdef OPENSSL_SYS_VMS
 407                 {
 408                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 409                 out = BIO_push(tmpbio, out);
 410                 }
 411 #endif
 412                 }
 413         else
 414                 {
 415                 if (BIO_write_filename(out,outfile) <= 0)
 416                         {
 417                         perror(outfile);
 418                         goto end;
 419                         }
 420                 }
 421
 422         if (text) X509_CRL_print(out, x);
 423
 424         if (noout)
 425                 {
 426                 ret = 0;
 427                 goto end;
 428                 }
 429
 430         if      (outformat == FORMAT_ASN1)
 431                 i=(int)i2d_X509_CRL_bio(out,x);
 432         else if (outformat == FORMAT_PEM)
 433                 i=PEM_write_bio_X509_CRL(out,x);
 434         else
 435                 {
 436                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 437                 goto end;
 438                 }
 439         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
 440         ret=0;
 441 end:
 442         if (ret != 0)
 443                 ERR_print_errors(bio_err);
 444         BIO_free_all(out);
 445         BIO_free_all(bio_out);
 446         bio_out=NULL;
 447         X509_CRL_free(x);
 448         if(store) {
 449                 X509_STORE_CTX_cleanup(&ctx);
 450                 X509_STORE_free(store);
 451         }
 452         apps_shutdown();
 453         OPENSSL_EXIT(ret);
 454         }
 455
 456 static X509_CRL *load_crl(char *infile, int format)
 457         {
 458         X509_CRL *x=NULL;
 459         BIO *in=NULL;
 460
 461         if (format == FORMAT_HTTP)
 462                 {
 463                 load_cert_crl_http(infile, bio_err, NULL, &x);
 464                 return x;
 465                 }
 466
 467         in=BIO_new(BIO_s_file());
 468         if (in == NULL)
 469                 {
 470                 ERR_print_errors(bio_err);
 471                 goto end;
 472                 }
 473
 474         if (infile == NULL)
 475                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 476         else
 477                 {
 478                 if (BIO_read_filename(in,infile) <= 0)
 479                         {
 480                         perror(infile);
 481                         goto end;
 482                         }
 483                 }
 484         if      (format == FORMAT_ASN1)
 485                 x=d2i_X509_CRL_bio(in,NULL);
 486         else if (format == FORMAT_PEM)
 487                 x=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL);
 488         else    {
 489                 BIO_printf(bio_err,"bad input format specified for input crl\n");
 490                 goto end;
 491                 }
 492         if (x == NULL)
 493                 {
 494                 BIO_printf(bio_err,"unable to load CRL\n");
 495                 ERR_print_errors(bio_err);
 496                 goto end;
 497                 }
 498
 499 end:
 500         BIO_free(in);
 501         return(x);
 502         }
 503