apps/crl.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include "apps.h"
  62 #include <openssl/bio.h>
  63 #include <openssl/err.h>
  64 #include <openssl/x509.h>
  65 #include <openssl/x509v3.h>
  66 #include <openssl/pem.h>
  67
  68 typedef enum OPTION_choice {
  69     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  70     OPT_INFORM, OPT_IN, OPT_OUTFORM, OPT_OUT, OPT_KEYFORM, OPT_KEY,
  71     OPT_ISSUER, OPT_LASTUPDATE, OPT_NEXTUPDATE, OPT_FINGERPRINT,
  72     OPT_CRLNUMBER, OPT_BADSIG, OPT_GENDELTA, OPT_CAPATH, OPT_CAFILE,
  73     OPT_NOCAPATH, OPT_NOCAFILE, OPT_VERIFY, OPT_TEXT, OPT_HASH, OPT_HASH_OLD,
  74     OPT_NOOUT, OPT_NAMEOPT, OPT_MD
  75 } OPTION_CHOICE;
  76
  77 OPTIONS crl_options[] = {
  78     {"help", OPT_HELP, '-', "Display this summary"},
  79     {"inform", OPT_INFORM, 'F', "Input format; default PEM"},
  80     {"in", OPT_IN, '<', "Input file - default stdin"},
  81     {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
  82     {"out", OPT_OUT, '>', "output file - default stdout"},
  83     {"keyform", OPT_KEYFORM, 'F'},
  84     {"key", OPT_KEY, '<'},
  85     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  86     {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"},
  87     {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"},
  88     {"noout", OPT_NOOUT, '-', "No CRL output"},
  89     {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"},
  90     {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"},
  91     {"badsig", OPT_BADSIG, '-'},
  92     {"gendelta", OPT_GENDELTA, '<'},
  93     {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"},
  94     {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"},
  95     {"no-CAfile", OPT_NOCAFILE, '-',
  96      "Do not load the default certificates file"},
  97     {"no-CApath", OPT_NOCAPATH, '-',
  98      "Do not load certificates from the default certificates directory"},
  99     {"verify", OPT_VERIFY, '-'},
 100     {"text", OPT_TEXT, '-', "Print out a text format version"},
 101     {"hash", OPT_HASH, '-', "Print hash value"},
 102     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 103     {"", OPT_MD, '-', "Any supported digest"},
 104 #ifndef OPENSSL_NO_MD5
 105     {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
 106 #endif
 107     {NULL}
 108 };
 109
 110 int crl_main(int argc, char **argv)
 111 {
 112     X509_CRL *x = NULL;
 113     BIO *out = NULL;
 114     X509_STORE *store = NULL;
 115     X509_STORE_CTX ctx;
 116     X509_LOOKUP *lookup = NULL;
 117     X509_OBJECT xobj;
 118     EVP_PKEY *pkey;
 119     const EVP_MD *digest = EVP_sha1();
 120     unsigned long nmflag = 0;
 121     char nmflag_set = 0;
 122     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
 123     char *CAfile = NULL, *CApath = NULL, *prog;
 124     OPTION_CHOICE o;
 125     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
 126     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 127     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
 128     int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0;
 129     int i;
 130 #ifndef OPENSSL_NO_MD5
 131     int hash_old = 0;
 132 #endif
 133
 134     prog = opt_init(argc, argv, crl_options);
 135     while ((o = opt_next()) != OPT_EOF) {
 136         switch (o) {
 137         case OPT_EOF:
 138         case OPT_ERR:
 139  opthelp:
 140             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 141             goto end;
 142         case OPT_HELP:
 143             opt_help(crl_options);
 144             ret = 0;
 145             goto end;
 146         case OPT_INFORM:
 147             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 148                 goto opthelp;
 149             break;
 150         case OPT_IN:
 151             infile = opt_arg();
 152             break;
 153         case OPT_OUTFORM:
 154             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 155                 goto opthelp;
 156             break;
 157         case OPT_OUT:
 158             outfile = opt_arg();
 159             break;
 160         case OPT_KEYFORM:
 161             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 162                 goto opthelp;
 163             break;
 164         case OPT_KEY:
 165             keyfile = opt_arg();
 166             break;
 167         case OPT_GENDELTA:
 168             crldiff = opt_arg();
 169             break;
 170         case OPT_CAPATH:
 171             CApath = opt_arg();
 172             do_ver = 1;
 173             break;
 174         case OPT_CAFILE:
 175             CAfile = opt_arg();
 176             do_ver = 1;
 177             break;
 178         case OPT_NOCAPATH:
 179             noCApath =  1;
 180             break;
 181         case OPT_NOCAFILE:
 182             noCAfile =  1;
 183             break;
 184         case OPT_HASH_OLD:
 185 #ifndef OPENSSL_NO_MD5
 186             hash_old = ++num;
 187 #endif
 188             break;
 189         case OPT_VERIFY:
 190             do_ver = 1;
 191             break;
 192         case OPT_TEXT:
 193             text = 1;
 194             break;
 195         case OPT_HASH:
 196             hash = ++num;
 197             break;
 198         case OPT_ISSUER:
 199             issuer = ++num;
 200             break;
 201         case OPT_LASTUPDATE:
 202             lastupdate = ++num;
 203             break;
 204         case OPT_NEXTUPDATE:
 205             nextupdate = ++num;
 206             break;
 207         case OPT_NOOUT:
 208             noout = ++num;
 209             break;
 210         case OPT_FINGERPRINT:
 211             fingerprint = ++num;
 212             break;
 213         case OPT_CRLNUMBER:
 214             crlnumber = ++num;
 215             break;
 216         case OPT_BADSIG:
 217             badsig = 1;
 218             break;
 219         case OPT_NAMEOPT:
 220             nmflag_set = 1;
 221             if (!set_name_ex(&nmflag, opt_arg()))
 222                 goto opthelp;
 223             break;
 224         case OPT_MD:
 225             if (!opt_md(opt_unknown(), &digest))
 226                 goto opthelp;
 227         }
 228     }
 229     argc = opt_num_rest();
 230     argv = opt_rest();
 231
 232     if (!nmflag_set)
 233         nmflag = XN_FLAG_ONELINE;
 234
 235     x = load_crl(infile, informat);
 236     if (x == NULL)
 237         goto end;
 238
 239     if (do_ver) {
 240         if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
 241             goto end;
 242         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 243         if (lookup == NULL)
 244             goto end;
 245         if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 246             BIO_printf(bio_err, "Error initialising X509 store\n");
 247             goto end;
 248         }
 249
 250         i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 251                                       X509_CRL_get_issuer(x), &xobj);
 252         if (i <= 0) {
 253             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 254             goto end;
 255         }
 256         pkey = X509_get_pubkey(xobj.data.x509);
 257         X509_OBJECT_free_contents(&xobj);
 258         if (!pkey) {
 259             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 260             goto end;
 261         }
 262         i = X509_CRL_verify(x, pkey);
 263         EVP_PKEY_free(pkey);
 264         if (i < 0)
 265             goto end;
 266         if (i == 0)
 267             BIO_printf(bio_err, "verify failure\n");
 268         else
 269             BIO_printf(bio_err, "verify OK\n");
 270     }
 271
 272     if (crldiff) {
 273         X509_CRL *newcrl, *delta;
 274         if (!keyfile) {
 275             BIO_puts(bio_err, "Missing CRL signing key\n");
 276             goto end;
 277         }
 278         newcrl = load_crl(crldiff, informat);
 279         if (!newcrl)
 280             goto end;
 281         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 282         if (!pkey) {
 283             X509_CRL_free(newcrl);
 284             goto end;
 285         }
 286         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 287         X509_CRL_free(newcrl);
 288         EVP_PKEY_free(pkey);
 289         if (delta) {
 290             X509_CRL_free(x);
 291             x = delta;
 292         } else {
 293             BIO_puts(bio_err, "Error creating delta CRL\n");
 294             goto end;
 295         }
 296     }
 297
 298     if (num) {
 299         for (i = 1; i <= num; i++) {
 300             if (issuer == i) {
 301                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 302                            nmflag);
 303             }
 304             if (crlnumber == i) {
 305                 ASN1_INTEGER *crlnum;
 306                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 307                 BIO_printf(bio_out, "crlNumber=");
 308                 if (crlnum) {
 309                     i2a_ASN1_INTEGER(bio_out, crlnum);
 310                     ASN1_INTEGER_free(crlnum);
 311                 } else
 312                     BIO_puts(bio_out, "<NONE>");
 313                 BIO_printf(bio_out, "\n");
 314             }
 315             if (hash == i) {
 316                 BIO_printf(bio_out, "%08lx\n",
 317                            X509_NAME_hash(X509_CRL_get_issuer(x)));
 318             }
 319 #ifndef OPENSSL_NO_MD5
 320             if (hash_old == i) {
 321                 BIO_printf(bio_out, "%08lx\n",
 322                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 323             }
 324 #endif
 325             if (lastupdate == i) {
 326                 BIO_printf(bio_out, "lastUpdate=");
 327                 ASN1_TIME_print(bio_out, X509_CRL_get_lastUpdate(x));
 328                 BIO_printf(bio_out, "\n");
 329             }
 330             if (nextupdate == i) {
 331                 BIO_printf(bio_out, "nextUpdate=");
 332                 if (X509_CRL_get_nextUpdate(x))
 333                     ASN1_TIME_print(bio_out, X509_CRL_get_nextUpdate(x));
 334                 else
 335                     BIO_printf(bio_out, "NONE");
 336                 BIO_printf(bio_out, "\n");
 337             }
 338             if (fingerprint == i) {
 339                 int j;
 340                 unsigned int n;
 341                 unsigned char md[EVP_MAX_MD_SIZE];
 342
 343                 if (!X509_CRL_digest(x, digest, md, &n)) {
 344                     BIO_printf(bio_err, "out of memory\n");
 345                     goto end;
 346                 }
 347                 BIO_printf(bio_out, "%s Fingerprint=",
 348                            OBJ_nid2sn(EVP_MD_type(digest)));
 349                 for (j = 0; j < (int)n; j++) {
 350                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 351                                ? '\n' : ':');
 352                 }
 353             }
 354         }
 355     }
 356     out = bio_open_default(outfile, 'w', outformat);
 357     if (out == NULL)
 358         goto end;
 359
 360     if (text)
 361         X509_CRL_print(out, x);
 362
 363     if (noout) {
 364         ret = 0;
 365         goto end;
 366     }
 367
 368     if (badsig) {
 369         ASN1_BIT_STRING *sig;
 370         unsigned char *psig;
 371         X509_CRL_get0_signature(&sig, NULL, x);
 372         psig = ASN1_STRING_data(sig);
 373         psig[ASN1_STRING_length(sig) - 1] ^= 0x1;
 374     }
 375
 376     if (outformat == FORMAT_ASN1)
 377         i = (int)i2d_X509_CRL_bio(out, x);
 378     else
 379         i = PEM_write_bio_X509_CRL(out, x);
 380     if (!i) {
 381         BIO_printf(bio_err, "unable to write CRL\n");
 382         goto end;
 383     }
 384     ret = 0;
 385
 386  end:
 387     if (ret != 0)
 388         ERR_print_errors(bio_err);
 389     BIO_free_all(out);
 390     X509_CRL_free(x);
 391     if (store) {
 392         X509_STORE_CTX_cleanup(&ctx);
 393         X509_STORE_free(store);
 394     }
 395     return (ret);
 396 }