apps/crl2p7.c

   1 /* apps/crl2p7.c */
   2 /* Copyright (C) 1995-1997 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 /* This was written by Gordon Chaffee <chaffee@plateau.cs.berkeley.edu>
  60  * and donated 'to the cause' along with lots and lots of other fixes to
  61  * the library. */
  62
  63 #include <stdio.h>
  64 #include <string.h>
  65 #include <sys/types.h>
  66 #include <sys/stat.h>
  67 #include "apps.h"
  68 #include "err.h"
  69 #include "evp.h"
  70 #include "x509.h"
  71 #include "pkcs7.h"
  72 #include "pem.h"
  73 #include "objects.h"
  74
  75 #ifndef NOPROTO
  76 static int add_certs_from_file(STACK *stack, char *certfile);
  77 #else
  78 static int add_certs_from_file();
  79 #endif
  80
  81 #undef PROG
  82 #define PROG    crl2pkcs7_main
  83
  84 /* -inform arg  - input format - default PEM (one of DER, TXT or PEM)
  85  * -outform arg - output format - default PEM
  86  * -in arg      - input file - default stdin
  87  * -out arg     - output file - default stdout
  88  */
  89
  90 int MAIN(argc, argv)
  91 int argc;
  92 char **argv;
  93         {
  94         int i,badops=0;
  95         BIO *in=NULL,*out=NULL;
  96         int informat,outformat;
  97         char *infile,*outfile,*prog,*certfile;
  98         PKCS7 *p7 = NULL;
  99         PKCS7_SIGNED *p7s = NULL;
 100         X509_CRL *crl=NULL;
 101         STACK *crl_stack=NULL;
 102         STACK *cert_stack=NULL;
 103         int ret=1,nocrl=0;
 104
 105         apps_startup();
 106
 107         if (bio_err == NULL)
 108                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 109                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);
 110
 111         infile=NULL;
 112         outfile=NULL;
 113         informat=FORMAT_PEM;
 114         outformat=FORMAT_PEM;
 115         certfile=NULL;
 116
 117         prog=argv[0];
 118         argc--;
 119         argv++;
 120         while (argc >= 1)
 121                 {
 122                 if      (strcmp(*argv,"-inform") == 0)
 123                         {
 124                         if (--argc < 1) goto bad;
 125                         informat=str2fmt(*(++argv));
 126                         }
 127                 else if (strcmp(*argv,"-outform") == 0)
 128                         {
 129                         if (--argc < 1) goto bad;
 130                         outformat=str2fmt(*(++argv));
 131                         }
 132                 else if (strcmp(*argv,"-in") == 0)
 133                         {
 134                         if (--argc < 1) goto bad;
 135                         infile= *(++argv);
 136                         }
 137                 else if (strcmp(*argv,"-nocrl") == 0)
 138                         {
 139                         nocrl=1;
 140                         }
 141                 else if (strcmp(*argv,"-out") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         outfile= *(++argv);
 145                         }
 146                 else if (strcmp(*argv,"-certfile") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         certfile= *(++argv);
 150                         }
 151                 else
 152                         {
 153                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 154                         badops=1;
 155                         break;
 156                         }
 157                 argc--;
 158                 argv++;
 159                 }
 160
 161         if (badops)
 162                 {
 163 bad:
 164                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 165                 BIO_printf(bio_err,"where options are\n");
 166                 BIO_printf(bio_err," -inform arg    input format - one of DER TXT PEM\n");
 167                 BIO_printf(bio_err," -outform arg   output format - one of DER TXT PEM\n");
 168                 BIO_printf(bio_err," -in arg        inout file\n");
 169                 BIO_printf(bio_err," -out arg       output file\n");
 170                 BIO_printf(bio_err," -certfile arg  certificates file of chain to a trusted CA\n");
 171                 BIO_printf(bio_err," -nocrl         no crl to load, just certs from '-certfile'\n");
 172                 EXIT(1);
 173                 }
 174
 175         ERR_load_crypto_strings();
 176
 177         in=BIO_new(BIO_s_file());
 178         out=BIO_new(BIO_s_file());
 179         if ((in == NULL) || (out == NULL))
 180                 {
 181                 ERR_print_errors(bio_err);
 182                 goto end;
 183                 }
 184
 185         if (!nocrl)
 186                 {
 187                 if (infile == NULL)
 188                         BIO_set_fp(in,stdin,BIO_NOCLOSE);
 189                 else
 190                         {
 191                         if (BIO_read_filename(in,infile) <= 0)
 192                                 {
 193                                 perror(infile);
 194                                 goto end;
 195                                 }
 196                         }
 197
 198                 if      (informat == FORMAT_ASN1)
 199                         crl=d2i_X509_CRL_bio(in,NULL);
 200                 else if (informat == FORMAT_PEM)
 201                         crl=PEM_read_bio_X509_CRL(in,NULL,NULL);
 202                 else    {
 203                         BIO_printf(bio_err,"bad input format specified for input crl\n");
 204                         goto end;
 205                         }
 206                 if (crl == NULL)
 207                         {
 208                         BIO_printf(bio_err,"unable to load CRL\n");
 209                         ERR_print_errors(bio_err);
 210                         goto end;
 211                         }
 212                 }
 213
 214         if ((p7=PKCS7_new()) == NULL) goto end;
 215         if ((p7s=PKCS7_SIGNED_new()) == NULL) goto end;
 216         p7->type=OBJ_nid2obj(NID_pkcs7_signed);
 217         p7->d.sign=p7s;
 218         p7s->contents->type=OBJ_nid2obj(NID_pkcs7_data);
 219
 220         if (!ASN1_INTEGER_set(p7s->version,1)) goto end;
 221         if ((crl_stack=sk_new(NULL)) == NULL) goto end;
 222         p7s->crl=crl_stack;
 223         if (crl != NULL)
 224                 {
 225                 sk_push(crl_stack,(char *)crl);
 226                 crl=NULL; /* now part of p7 for Freeing */
 227                 }
 228
 229         if ((cert_stack=sk_new(NULL)) == NULL) goto end;
 230         p7s->cert=cert_stack;
 231
 232         if (certfile != NULL)
 233                 {
 234                 if (add_certs_from_file(cert_stack,certfile) < 0)
 235                         {
 236                         BIO_printf(bio_err,"error loading certificates\n");
 237                         ERR_print_errors(bio_err);
 238                         goto end;
 239                         }
 240                 }
 241
 242         if (outfile == NULL)
 243                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 244         else
 245                 {
 246                 if (BIO_write_filename(out,outfile) <= 0)
 247                         {
 248                         perror(outfile);
 249                         goto end;
 250                         }
 251                 }
 252
 253         if      (outformat == FORMAT_ASN1)
 254                 i=i2d_PKCS7_bio(out,p7);
 255         else if (outformat == FORMAT_PEM)
 256                 i=PEM_write_bio_PKCS7(out,p7);
 257         else    {
 258                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 259                 goto end;
 260                 }
 261         if (!i)
 262                 {
 263                 BIO_printf(bio_err,"unable to write pkcs7 object\n");
 264                 ERR_print_errors(bio_err);
 265                 goto end;
 266                 }
 267         ret=0;
 268 end:
 269         if (in != NULL) BIO_free(in);
 270         if (out != NULL) BIO_free(out);
 271         if (p7 != NULL) PKCS7_free(p7);
 272         if (crl != NULL) X509_CRL_free(crl);
 273
 274         EXIT(ret);
 275         }
 276
 277 /*
 278  *----------------------------------------------------------------------
 279  * int add_certs_from_file
 280  *
 281  *      Read a list of certificates to be checked from a file.
 282  *
 283  * Results:
 284  *      number of certs added if successful, -1 if not.
 285  *----------------------------------------------------------------------
 286  */
 287 static int add_certs_from_file(stack,certfile)
 288 STACK *stack;
 289 char *certfile;
 290         {
 291         struct stat st;
 292         BIO *in=NULL;
 293         int count=0;
 294         int ret= -1;
 295         STACK *sk=NULL;
 296         X509_INFO *xi;
 297
 298         if ((stat(certfile,&st) != 0))
 299                 {
 300                 BIO_printf(bio_err,"unable to file the file, %s\n",certfile);
 301                 goto end;
 302                 }
 303
 304         in=BIO_new(BIO_s_file());
 305         if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0))
 306                 {
 307                 goto end;
 308                 }
 309
 310         /* This loads from a file, a stack of x509/crl/pkey sets */
 311         sk=PEM_X509_INFO_read_bio(in,NULL,NULL);
 312         if (sk == NULL) goto end;
 313
 314         /* scan over it and pull out the CRL's */
 315         while (sk_num(sk))
 316                 {
 317                 xi=(X509_INFO *)sk_shift(sk);
 318                 if (xi->x509 != NULL)
 319                         {
 320                         sk_push(stack,(char *)xi->x509);
 321                         xi->x509=NULL;
 322                         count++;
 323                         }
 324                 X509_INFO_free(xi);
 325                 }
 326
 327         ret=count;
 328 end:
 329         /* never need to Free x */
 330         if (in != NULL) BIO_free(in);
 331         if (sk != NULL) sk_free(sk);
 332         return(ret);
 333         }
 334