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 #ifndef OPENSSL_NO_MD5
  85 " -hash_old       - print old-style (MD5) hash value\n",
  86 #endif
  87 " -fingerprint    - print the crl fingerprint\n",
  88 " -issuer         - print issuer DN\n",
  89 " -lastupdate     - lastUpdate field\n",
  90 " -nextupdate     - nextUpdate field\n",
  91 " -crlnumber      - print CRL number\n",
  92 " -noout          - no CRL output\n",
  93 " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
  94 " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
  95 " -nameopt arg    - various certificate name options\n",
  96 NULL
  97 };
  98
  99 static BIO *bio_out=NULL;
 100
 101 int MAIN(int, char **);
 102
 103 int MAIN(int argc, char **argv)
 104         {
 105         unsigned long nmflag = 0;
 106         X509_CRL *x=NULL;
 107         char *CAfile = NULL, *CApath = NULL;
 108         int ret=1,i,num,badops=0,badsig=0;
 109         BIO *out=NULL;
 110         int informat,outformat, keyformat;
 111         char *infile=NULL,*outfile=NULL, *crldiff = NULL, *keyfile = NULL;
 112         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
 113 #ifndef OPENSSL_NO_MD5
 114        int hash_old=0;
 115 #endif
 116         int fingerprint = 0, crlnumber = 0;
 117         const char **pp;
 118         X509_STORE *store = NULL;
 119         X509_STORE_CTX ctx;
 120         X509_LOOKUP *lookup = NULL;
 121         X509_OBJECT xobj;
 122         EVP_PKEY *pkey;
 123         int do_ver = 0;
 124         const EVP_MD *md_alg,*digest=EVP_sha1();
 125
 126         apps_startup();
 127
 128         if (bio_err == NULL)
 129                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 130                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 131
 132         if (!load_config(bio_err, NULL))
 133                 goto end;
 134
 135         if (bio_out == NULL)
 136                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 137                         {
 138                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 139 #ifdef OPENSSL_SYS_VMS
 140                         {
 141                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 142                         bio_out = BIO_push(tmpbio, bio_out);
 143                         }
 144 #endif
 145                         }
 146
 147         informat=FORMAT_PEM;
 148         outformat=FORMAT_PEM;
 149         keyformat=FORMAT_PEM;
 150
 151         argc--;
 152         argv++;
 153         num=0;
 154         while (argc >= 1)
 155                 {
 156 #ifdef undef
 157                 if      (strcmp(*argv,"-p") == 0)
 158                         {
 159                         if (--argc < 1) goto bad;
 160                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
 161                         }
 162 #endif
 163                 if      (strcmp(*argv,"-inform") == 0)
 164                         {
 165                         if (--argc < 1) goto bad;
 166                         informat=str2fmt(*(++argv));
 167                         }
 168                 else if (strcmp(*argv,"-outform") == 0)
 169                         {
 170                         if (--argc < 1) goto bad;
 171                         outformat=str2fmt(*(++argv));
 172                         }
 173                 else if (strcmp(*argv,"-in") == 0)
 174                         {
 175                         if (--argc < 1) goto bad;
 176                         infile= *(++argv);
 177                         }
 178                 else if (strcmp(*argv,"-gendelta") == 0)
 179                         {
 180                         if (--argc < 1) goto bad;
 181                         crldiff= *(++argv);
 182                         }
 183                 else if (strcmp(*argv,"-key") == 0)
 184                         {
 185                         if (--argc < 1) goto bad;
 186                         keyfile= *(++argv);
 187                         }
 188                 else if (strcmp(*argv,"-keyform") == 0)
 189                         {
 190                         if (--argc < 1) goto bad;
 191                         keyformat=str2fmt(*(++argv));
 192                         }
 193                 else if (strcmp(*argv,"-out") == 0)
 194                         {
 195                         if (--argc < 1) goto bad;
 196                         outfile= *(++argv);
 197                         }
 198                 else if (strcmp(*argv,"-CApath") == 0)
 199                         {
 200                         if (--argc < 1) goto bad;
 201                         CApath = *(++argv);
 202                         do_ver = 1;
 203                         }
 204                 else if (strcmp(*argv,"-CAfile") == 0)
 205                         {
 206                         if (--argc < 1) goto bad;
 207                         CAfile = *(++argv);
 208                         do_ver = 1;
 209                         }
 210                 else if (strcmp(*argv,"-verify") == 0)
 211                         do_ver = 1;
 212                 else if (strcmp(*argv,"-text") == 0)
 213                         text = 1;
 214                 else if (strcmp(*argv,"-hash") == 0)
 215                         hash= ++num;
 216 #ifndef OPENSSL_NO_MD5
 217                 else if (strcmp(*argv,"-hash_old") == 0)
 218                         hash_old= ++num;
 219 #endif
 220                 else if (strcmp(*argv,"-nameopt") == 0)
 221                         {
 222                         if (--argc < 1) goto bad;
 223                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
 224                         }
 225                 else if (strcmp(*argv,"-issuer") == 0)
 226                         issuer= ++num;
 227                 else if (strcmp(*argv,"-lastupdate") == 0)
 228                         lastupdate= ++num;
 229                 else if (strcmp(*argv,"-nextupdate") == 0)
 230                         nextupdate= ++num;
 231                 else if (strcmp(*argv,"-noout") == 0)
 232                         noout= ++num;
 233                 else if (strcmp(*argv,"-fingerprint") == 0)
 234                         fingerprint= ++num;
 235                 else if (strcmp(*argv,"-crlnumber") == 0)
 236                         crlnumber= ++num;
 237                 else if (strcmp(*argv,"-badsig") == 0)
 238                         badsig = 1;
 239                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
 240                         {
 241                         /* ok */
 242                         digest=md_alg;
 243                         }
 244                 else
 245                         {
 246                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 247                         badops=1;
 248                         break;
 249                         }
 250                 argc--;
 251                 argv++;
 252                 }
 253
 254         if (badops)
 255                 {
 256 bad:
 257                 for (pp=crl_usage; (*pp != NULL); pp++)
 258                         BIO_printf(bio_err,"%s",*pp);
 259                 goto end;
 260                 }
 261
 262         ERR_load_crypto_strings();
 263         x=load_crl(infile,informat);
 264         if (x == NULL) { goto end; }
 265
 266         if(do_ver) {
 267                 store = X509_STORE_new();
 268                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 269                 if (lookup == NULL) goto end;
 270                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 271                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 272
 273                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 274                 if (lookup == NULL) goto end;
 275                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 276                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 277                 ERR_clear_error();
 278
 279                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 280                         BIO_printf(bio_err,
 281                                 "Error initialising X509 store\n");
 282                         goto end;
 283                 }
 284
 285                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 286                                         X509_CRL_get_issuer(x), &xobj);
 287                 if(i <= 0) {
 288                         BIO_printf(bio_err,
 289                                 "Error getting CRL issuer certificate\n");
 290                         goto end;
 291                 }
 292                 pkey = X509_get_pubkey(xobj.data.x509);
 293                 X509_OBJECT_free_contents(&xobj);
 294                 if(!pkey) {
 295                         BIO_printf(bio_err,
 296                                 "Error getting CRL issuer public key\n");
 297                         goto end;
 298                 }
 299                 i = X509_CRL_verify(x, pkey);
 300                 EVP_PKEY_free(pkey);
 301                 if(i < 0) goto end;
 302                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
 303                 else BIO_printf(bio_err, "verify OK\n");
 304         }
 305
 306         if (crldiff)
 307                 {
 308                 X509_CRL *newcrl, *delta;
 309                 if (!keyfile)
 310                         {
 311                         BIO_puts(bio_err, "Missing CRL signing key\n");
 312                         goto end;
 313                         }
 314                 newcrl = load_crl(crldiff,informat);
 315                 if (!newcrl)
 316                         goto end;
 317                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
 318                                         "CRL signing key");
 319                 if (!pkey)
 320                         {
 321                         X509_CRL_free(newcrl);
 322                         goto end;
 323                         }
 324                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 325                 X509_CRL_free(newcrl);
 326                 EVP_PKEY_free(pkey);
 327                 if (delta)
 328                         {
 329                         X509_CRL_free(x);
 330                         x = delta;
 331                         }
 332                 else
 333                         {
 334                         BIO_puts(bio_err, "Error creating delta CRL\n");
 335                         goto end;
 336                         }
 337                 }
 338
 339         if (num)
 340                 {
 341                 for (i=1; i<=num; i++)
 342                         {
 343                         if (issuer == i)
 344                                 {
 345                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
 346                                 }
 347                         if (crlnumber == i)
 348                                 {
 349                                 ASN1_INTEGER *crlnum;
 350                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
 351                                                               NULL, NULL);
 352                                 BIO_printf(bio_out,"crlNumber=");
 353                                 if (crlnum)
 354                                         {
 355                                         i2a_ASN1_INTEGER(bio_out, crlnum);
 356                                         ASN1_INTEGER_free(crlnum);
 357                                         }
 358                                 else
 359                                         BIO_puts(bio_out, "<NONE>");
 360                                 BIO_printf(bio_out,"\n");
 361                                 }
 362                         if (hash == i)
 363                                 {
 364                                 BIO_printf(bio_out,"%08lx\n",
 365                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
 366                                 }
 367 #ifndef OPENSSL_NO_MD5
 368                         if (hash_old == i)
 369                                 {
 370                                 BIO_printf(bio_out,"%08lx\n",
 371                                         X509_NAME_hash_old(
 372                                                 X509_CRL_get_issuer(x)));
 373                                 }
 374 #endif
 375                         if (lastupdate == i)
 376                                 {
 377                                 BIO_printf(bio_out,"lastUpdate=");
 378                                 ASN1_TIME_print(bio_out,
 379                                                 X509_CRL_get_lastUpdate(x));
 380                                 BIO_printf(bio_out,"\n");
 381                                 }
 382                         if (nextupdate == i)
 383                                 {
 384                                 BIO_printf(bio_out,"nextUpdate=");
 385                                 if (X509_CRL_get_nextUpdate(x))
 386                                         ASN1_TIME_print(bio_out,
 387                                                 X509_CRL_get_nextUpdate(x));
 388                                 else
 389                                         BIO_printf(bio_out,"NONE");
 390                                 BIO_printf(bio_out,"\n");
 391                                 }
 392                         if (fingerprint == i)
 393                                 {
 394                                 int j;
 395                                 unsigned int n;
 396                                 unsigned char md[EVP_MAX_MD_SIZE];
 397
 398                                 if (!X509_CRL_digest(x,digest,md,&n))
 399                                         {
 400                                         BIO_printf(bio_err,"out of memory\n");
 401                                         goto end;
 402                                         }
 403                                 BIO_printf(bio_out,"%s Fingerprint=",
 404                                                 OBJ_nid2sn(EVP_MD_type(digest)));
 405                                 for (j=0; j<(int)n; j++)
 406                                         {
 407                                         BIO_printf(bio_out,"%02X%c",md[j],
 408                                                 (j+1 == (int)n)
 409                                                 ?'\n':':');
 410                                         }
 411                                 }
 412                         }
 413                 }
 414
 415         out=BIO_new(BIO_s_file());
 416         if (out == NULL)
 417                 {
 418                 ERR_print_errors(bio_err);
 419                 goto end;
 420                 }
 421
 422         if (outfile == NULL)
 423                 {
 424                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 425 #ifdef OPENSSL_SYS_VMS
 426                 {
 427                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 428                 out = BIO_push(tmpbio, out);
 429                 }
 430 #endif
 431                 }
 432         else
 433                 {
 434                 if (BIO_write_filename(out,outfile) <= 0)
 435                         {
 436                         perror(outfile);
 437                         goto end;
 438                         }
 439                 }
 440
 441         if (text) X509_CRL_print(out, x);
 442
 443         if (noout)
 444                 {
 445                 ret = 0;
 446                 goto end;
 447                 }
 448
 449         if (badsig)
 450                 x->signature->data[x->signature->length - 1] ^= 0x1;
 451
 452         if      (outformat == FORMAT_ASN1)
 453                 i=(int)i2d_X509_CRL_bio(out,x);
 454         else if (outformat == FORMAT_PEM)
 455                 i=PEM_write_bio_X509_CRL(out,x);
 456         else
 457                 {
 458                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 459                 goto end;
 460                 }
 461         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
 462         ret=0;
 463 end:
 464         if (ret != 0)
 465                 ERR_print_errors(bio_err);
 466         BIO_free_all(out);
 467         BIO_free_all(bio_out);
 468         bio_out=NULL;
 469         X509_CRL_free(x);
 470         if(store) {
 471                 X509_STORE_CTX_cleanup(&ctx);
 472                 X509_STORE_free(store);
 473         }
 474         apps_shutdown();
 475         OPENSSL_EXIT(ret);
 476         }