apps/crl2p7.c

   1 /* apps/crl2p7.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 /* 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 "apps.h"
  67 #include <openssl/err.h>
  68 #include <openssl/evp.h>
  69 #include <openssl/x509.h>
  70 #include <openssl/pkcs7.h>
  71 #include <openssl/pem.h>
  72 #include <openssl/objects.h>
  73
  74 static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile);
  75 #undef PROG
  76 #define PROG    crl2pkcs7_main
  77
  78 /*-
  79  * -inform arg  - input format - default PEM (DER or PEM)
  80  * -outform arg - output format - default PEM
  81  * -in arg      - input file - default stdin
  82  * -out arg     - output file - default stdout
  83  */
  84
  85 int MAIN(int, char **);
  86
  87 int MAIN(int argc, char **argv)
  88         {
  89         int i,badops=0;
  90         BIO *in=NULL,*out=NULL;
  91         int informat,outformat;
  92         char *infile,*outfile,*prog,*certfile;
  93         PKCS7 *p7 = NULL;
  94         PKCS7_SIGNED *p7s = NULL;
  95         X509_CRL *crl=NULL;
  96         STACK_OF(OPENSSL_STRING) *certflst=NULL;
  97         STACK_OF(X509_CRL) *crl_stack=NULL;
  98         STACK_OF(X509) *cert_stack=NULL;
  99         int ret=1,nocrl=0;
 100
 101         apps_startup();
 102
 103         if (bio_err == NULL)
 104                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 105                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 106
 107         infile=NULL;
 108         outfile=NULL;
 109         informat=FORMAT_PEM;
 110         outformat=FORMAT_PEM;
 111
 112         prog=argv[0];
 113         argc--;
 114         argv++;
 115         while (argc >= 1)
 116                 {
 117                 if      (strcmp(*argv,"-inform") == 0)
 118                         {
 119                         if (--argc < 1) goto bad;
 120                         informat=str2fmt(*(++argv));
 121                         }
 122                 else if (strcmp(*argv,"-outform") == 0)
 123                         {
 124                         if (--argc < 1) goto bad;
 125                         outformat=str2fmt(*(++argv));
 126                         }
 127                 else if (strcmp(*argv,"-in") == 0)
 128                         {
 129                         if (--argc < 1) goto bad;
 130                         infile= *(++argv);
 131                         }
 132                 else if (strcmp(*argv,"-nocrl") == 0)
 133                         {
 134                         nocrl=1;
 135                         }
 136                 else if (strcmp(*argv,"-out") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         outfile= *(++argv);
 140                         }
 141                 else if (strcmp(*argv,"-certfile") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         if(!certflst) certflst = sk_OPENSSL_STRING_new_null();
 145                         if (!certflst)
 146                                 goto end;
 147                         if (!sk_OPENSSL_STRING_push(certflst,*(++argv)))
 148                                 {
 149                                 sk_OPENSSL_STRING_free(certflst);
 150                                 goto end;
 151                                 }
 152                         }
 153                 else
 154                         {
 155                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 156                         badops=1;
 157                         break;
 158                         }
 159                 argc--;
 160                 argv++;
 161                 }
 162
 163         if (badops)
 164                 {
 165 bad:
 166                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 167                 BIO_printf(bio_err,"where options are\n");
 168                 BIO_printf(bio_err," -inform arg    input format - DER or PEM\n");
 169                 BIO_printf(bio_err," -outform arg   output format - DER or PEM\n");
 170                 BIO_printf(bio_err," -in arg        input file\n");
 171                 BIO_printf(bio_err," -out arg       output file\n");
 172                 BIO_printf(bio_err," -certfile arg  certificates file of chain to a trusted CA\n");
 173                 BIO_printf(bio_err,"                (can be used more than once)\n");
 174                 BIO_printf(bio_err," -nocrl         no crl to load, just certs from '-certfile'\n");
 175                 ret = 1;
 176                 goto end;
 177                 }
 178
 179         ERR_load_crypto_strings();
 180
 181         in=BIO_new(BIO_s_file());
 182         out=BIO_new(BIO_s_file());
 183         if ((in == NULL) || (out == NULL))
 184                 {
 185                 ERR_print_errors(bio_err);
 186                 goto end;
 187                 }
 188
 189         if (!nocrl)
 190                 {
 191                 if (infile == NULL)
 192                         BIO_set_fp(in,stdin,BIO_NOCLOSE);
 193                 else
 194                         {
 195                         if (BIO_read_filename(in,infile) <= 0)
 196                                 {
 197                                 perror(infile);
 198                                 goto end;
 199                                 }
 200                         }
 201
 202                 if      (informat == FORMAT_ASN1)
 203                         crl=d2i_X509_CRL_bio(in,NULL);
 204                 else if (informat == FORMAT_PEM)
 205                         crl=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL);
 206                 else    {
 207                         BIO_printf(bio_err,"bad input format specified for input crl\n");
 208                         goto end;
 209                         }
 210                 if (crl == NULL)
 211                         {
 212                         BIO_printf(bio_err,"unable to load CRL\n");
 213                         ERR_print_errors(bio_err);
 214                         goto end;
 215                         }
 216                 }
 217
 218         if ((p7=PKCS7_new()) == NULL) goto end;
 219         if ((p7s=PKCS7_SIGNED_new()) == NULL) goto end;
 220         p7->type=OBJ_nid2obj(NID_pkcs7_signed);
 221         p7->d.sign=p7s;
 222         p7s->contents->type=OBJ_nid2obj(NID_pkcs7_data);
 223
 224         if (!ASN1_INTEGER_set(p7s->version,1)) goto end;
 225         if ((crl_stack=sk_X509_CRL_new_null()) == NULL) goto end;
 226         p7s->crl=crl_stack;
 227         if (crl != NULL)
 228                 {
 229                 sk_X509_CRL_push(crl_stack,crl);
 230                 crl=NULL; /* now part of p7 for OPENSSL_freeing */
 231                 }
 232
 233         if ((cert_stack=sk_X509_new_null()) == NULL) goto end;
 234         p7s->cert=cert_stack;
 235
 236         if(certflst) for(i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) {
 237                 certfile = sk_OPENSSL_STRING_value(certflst, i);
 238                 if (add_certs_from_file(cert_stack,certfile) < 0)
 239                         {
 240                         BIO_printf(bio_err, "error loading certificates\n");
 241                         ERR_print_errors(bio_err);
 242                         goto end;
 243                         }
 244         }
 245
 246         sk_OPENSSL_STRING_free(certflst);
 247
 248         if (outfile == NULL)
 249                 {
 250                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 251 #ifdef OPENSSL_SYS_VMS
 252                 {
 253                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 254                 out = BIO_push(tmpbio, out);
 255                 }
 256 #endif
 257                 }
 258         else
 259                 {
 260                 if (BIO_write_filename(out,outfile) <= 0)
 261                         {
 262                         perror(outfile);
 263                         goto end;
 264                         }
 265                 }
 266
 267         if      (outformat == FORMAT_ASN1)
 268                 i=i2d_PKCS7_bio(out,p7);
 269         else if (outformat == FORMAT_PEM)
 270                 i=PEM_write_bio_PKCS7(out,p7);
 271         else    {
 272                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 273                 goto end;
 274                 }
 275         if (!i)
 276                 {
 277                 BIO_printf(bio_err,"unable to write pkcs7 object\n");
 278                 ERR_print_errors(bio_err);
 279                 goto end;
 280                 }
 281         ret=0;
 282 end:
 283         if (in != NULL) BIO_free(in);
 284         if (out != NULL) BIO_free_all(out);
 285         if (p7 != NULL) PKCS7_free(p7);
 286         if (crl != NULL) X509_CRL_free(crl);
 287
 288         apps_shutdown();
 289         OPENSSL_EXIT(ret);
 290         }
 291
 292 /*
 293  *----------------------------------------------------------------------
 294  * int add_certs_from_file
 295  *
 296  *      Read a list of certificates to be checked from a file.
 297  *
 298  * Results:
 299  *      number of certs added if successful, -1 if not.
 300  *----------------------------------------------------------------------
 301  */
 302 static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile)
 303         {
 304         BIO *in=NULL;
 305         int count=0;
 306         int ret= -1;
 307         STACK_OF(X509_INFO) *sk=NULL;
 308         X509_INFO *xi;
 309
 310         in=BIO_new(BIO_s_file());
 311         if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0))
 312                 {
 313                 BIO_printf(bio_err,"error opening the file, %s\n",certfile);
 314                 goto end;
 315                 }
 316
 317         /* This loads from a file, a stack of x509/crl/pkey sets */
 318         sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL);
 319         if (sk == NULL) {
 320                 BIO_printf(bio_err,"error reading the file, %s\n",certfile);
 321                 goto end;
 322         }
 323
 324         /* scan over it and pull out the CRL's */
 325         while (sk_X509_INFO_num(sk))
 326                 {
 327                 xi=sk_X509_INFO_shift(sk);
 328                 if (xi->x509 != NULL)
 329                         {
 330                         sk_X509_push(stack,xi->x509);
 331                         xi->x509=NULL;
 332                         count++;
 333                         }
 334                 X509_INFO_free(xi);
 335                 }
 336
 337         ret=count;
 338 end:
 339         /* never need to OPENSSL_free x */
 340         if (in != NULL) BIO_free(in);
 341         if (sk != NULL) sk_X509_INFO_free(sk);
 342         return(ret);
 343         }
 344