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 /*
  60  * This was written by Gordon Chaffee <chaffee@plateau.cs.berkeley.edu> and
  61  * donated 'to the cause' along with lots and lots of other fixes to the
  62  * library.
  63  */
  64
  65 #include <stdio.h>
  66 #include <string.h>
  67 #include <sys/types.h>
  68 #include "apps.h"
  69 #include <openssl/err.h>
  70 #include <openssl/evp.h>
  71 #include <openssl/x509.h>
  72 #include <openssl/pkcs7.h>
  73 #include <openssl/pem.h>
  74 #include <openssl/objects.h>
  75
  76 static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile);
  77 #undef PROG
  78 #define PROG    crl2pkcs7_main
  79
  80 /*-
  81  * -inform arg  - input format - default PEM (DER or PEM)
  82  * -outform arg - output format - default PEM
  83  * -in arg      - input file - default stdin
  84  * -out arg     - output file - default stdout
  85  */
  86
  87 int MAIN(int, char **);
  88
  89 int MAIN(int argc, char **argv)
  90 {
  91     int i, badops = 0;
  92     BIO *in = NULL, *out = NULL;
  93     int informat, outformat;
  94     char *infile, *outfile, *prog, *certfile;
  95     PKCS7 *p7 = NULL;
  96     PKCS7_SIGNED *p7s = NULL;
  97     X509_CRL *crl = NULL;
  98     STACK_OF(OPENSSL_STRING) *certflst = NULL;
  99     STACK_OF(X509_CRL) *crl_stack = NULL;
 100     STACK_OF(X509) *cert_stack = NULL;
 101     int ret = 1, nocrl = 0;
 102
 103     apps_startup();
 104
 105     if (bio_err == NULL)
 106         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 107             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 108
 109     infile = NULL;
 110     outfile = NULL;
 111     informat = FORMAT_PEM;
 112     outformat = FORMAT_PEM;
 113
 114     prog = argv[0];
 115     argc--;
 116     argv++;
 117     while (argc >= 1) {
 118         if (strcmp(*argv, "-inform") == 0) {
 119             if (--argc < 1)
 120                 goto bad;
 121             informat = str2fmt(*(++argv));
 122         } else if (strcmp(*argv, "-outform") == 0) {
 123             if (--argc < 1)
 124                 goto bad;
 125             outformat = str2fmt(*(++argv));
 126         } else if (strcmp(*argv, "-in") == 0) {
 127             if (--argc < 1)
 128                 goto bad;
 129             infile = *(++argv);
 130         } else if (strcmp(*argv, "-nocrl") == 0) {
 131             nocrl = 1;
 132         } else if (strcmp(*argv, "-out") == 0) {
 133             if (--argc < 1)
 134                 goto bad;
 135             outfile = *(++argv);
 136         } else if (strcmp(*argv, "-certfile") == 0) {
 137             if (--argc < 1)
 138                 goto bad;
 139             if (!certflst)
 140                 certflst = sk_OPENSSL_STRING_new_null();
 141             if (!certflst)
 142                 goto end;
 143             if (!sk_OPENSSL_STRING_push(certflst, *(++argv))) {
 144                 sk_OPENSSL_STRING_free(certflst);
 145                 goto end;
 146             }
 147         } else {
 148             BIO_printf(bio_err, "unknown option %s\n", *argv);
 149             badops = 1;
 150             break;
 151         }
 152         argc--;
 153         argv++;
 154     }
 155
 156     if (badops) {
 157  bad:
 158         BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 159         BIO_printf(bio_err, "where options are\n");
 160         BIO_printf(bio_err, " -inform arg    input format - DER or PEM\n");
 161         BIO_printf(bio_err, " -outform arg   output format - DER or PEM\n");
 162         BIO_printf(bio_err, " -in arg        input file\n");
 163         BIO_printf(bio_err, " -out arg       output file\n");
 164         BIO_printf(bio_err,
 165                    " -certfile arg  certificates file of chain to a trusted CA\n");
 166         BIO_printf(bio_err, "                (can be used more than once)\n");
 167         BIO_printf(bio_err,
 168                    " -nocrl         no crl to load, just certs from '-certfile'\n");
 169         ret = 1;
 170         goto end;
 171     }
 172
 173     ERR_load_crypto_strings();
 174
 175     in = BIO_new(BIO_s_file());
 176     out = BIO_new(BIO_s_file());
 177     if ((in == NULL) || (out == NULL)) {
 178         ERR_print_errors(bio_err);
 179         goto end;
 180     }
 181
 182     if (!nocrl) {
 183         if (infile == NULL)
 184             BIO_set_fp(in, stdin, BIO_NOCLOSE);
 185         else {
 186             if (BIO_read_filename(in, infile) <= 0) {
 187                 perror(infile);
 188                 goto end;
 189             }
 190         }
 191
 192         if (informat == FORMAT_ASN1)
 193             crl = d2i_X509_CRL_bio(in, NULL);
 194         else if (informat == FORMAT_PEM)
 195             crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 196         else {
 197             BIO_printf(bio_err, "bad input format specified for input crl\n");
 198             goto end;
 199         }
 200         if (crl == NULL) {
 201             BIO_printf(bio_err, "unable to load CRL\n");
 202             ERR_print_errors(bio_err);
 203             goto end;
 204         }
 205     }
 206
 207     if ((p7 = PKCS7_new()) == NULL)
 208         goto end;
 209     if ((p7s = PKCS7_SIGNED_new()) == NULL)
 210         goto end;
 211     p7->type = OBJ_nid2obj(NID_pkcs7_signed);
 212     p7->d.sign = p7s;
 213     p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data);
 214
 215     if (!ASN1_INTEGER_set(p7s->version, 1))
 216         goto end;
 217     if ((crl_stack = sk_X509_CRL_new_null()) == NULL)
 218         goto end;
 219     p7s->crl = crl_stack;
 220     if (crl != NULL) {
 221         sk_X509_CRL_push(crl_stack, crl);
 222         crl = NULL;             /* now part of p7 for OPENSSL_freeing */
 223     }
 224
 225     if ((cert_stack = sk_X509_new_null()) == NULL)
 226         goto end;
 227     p7s->cert = cert_stack;
 228
 229     if (certflst)
 230         for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) {
 231             certfile = sk_OPENSSL_STRING_value(certflst, i);
 232             if (add_certs_from_file(cert_stack, certfile) < 0) {
 233                 BIO_printf(bio_err, "error loading certificates\n");
 234                 ERR_print_errors(bio_err);
 235                 goto end;
 236             }
 237         }
 238
 239     sk_OPENSSL_STRING_free(certflst);
 240
 241     if (outfile == NULL) {
 242         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 243 #ifdef OPENSSL_SYS_VMS
 244         {
 245             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 246             out = BIO_push(tmpbio, out);
 247         }
 248 #endif
 249     } else {
 250         if (BIO_write_filename(out, outfile) <= 0) {
 251             perror(outfile);
 252             goto end;
 253         }
 254     }
 255
 256     if (outformat == FORMAT_ASN1)
 257         i = i2d_PKCS7_bio(out, p7);
 258     else if (outformat == FORMAT_PEM)
 259         i = PEM_write_bio_PKCS7(out, p7);
 260     else {
 261         BIO_printf(bio_err, "bad output format specified for outfile\n");
 262         goto end;
 263     }
 264     if (!i) {
 265         BIO_printf(bio_err, "unable to write pkcs7 object\n");
 266         ERR_print_errors(bio_err);
 267         goto end;
 268     }
 269     ret = 0;
 270  end:
 271     if (in != NULL)
 272         BIO_free(in);
 273     if (out != NULL)
 274         BIO_free_all(out);
 275     if (p7 != NULL)
 276         PKCS7_free(p7);
 277     if (crl != NULL)
 278         X509_CRL_free(crl);
 279
 280     apps_shutdown();
 281     OPENSSL_EXIT(ret);
 282 }
 283
 284 /*-
 285  *----------------------------------------------------------------------
 286  * int add_certs_from_file
 287  *
 288  *      Read a list of certificates to be checked from a file.
 289  *
 290  * Results:
 291  *      number of certs added if successful, -1 if not.
 292  *----------------------------------------------------------------------
 293  */
 294 static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile)
 295 {
 296     BIO *in = NULL;
 297     int count = 0;
 298     int ret = -1;
 299     STACK_OF(X509_INFO) *sk = NULL;
 300     X509_INFO *xi;
 301
 302     in = BIO_new(BIO_s_file());
 303     if ((in == NULL) || (BIO_read_filename(in, certfile) <= 0)) {
 304         BIO_printf(bio_err, "error opening the file, %s\n", certfile);
 305         goto end;
 306     }
 307
 308     /* This loads from a file, a stack of x509/crl/pkey sets */
 309     sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
 310     if (sk == NULL) {
 311         BIO_printf(bio_err, "error reading the file, %s\n", certfile);
 312         goto end;
 313     }
 314
 315     /* scan over it and pull out the CRL's */
 316     while (sk_X509_INFO_num(sk)) {
 317         xi = sk_X509_INFO_shift(sk);
 318         if (xi->x509 != NULL) {
 319             sk_X509_push(stack, xi->x509);
 320             xi->x509 = NULL;
 321             count++;
 322         }
 323         X509_INFO_free(xi);
 324     }
 325
 326     ret = count;
 327  end:
 328     /* never need to OPENSSL_free x */
 329     if (in != NULL)
 330         BIO_free(in);
 331     if (sk != NULL)
 332         sk_X509_INFO_free(sk);
 333     return (ret);
 334 }