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_VERIFY, OPT_TEXT, OPT_HASH, OPT_HASH_OLD, OPT_NOOUT,
  74     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     {"verify", OPT_VERIFY, '-'},
  96     {"text", OPT_TEXT, '-', "Print out a text format version"},
  97     {"hash", OPT_HASH, '-', "Print hash value"},
  98     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
  99     {"", OPT_MD, '-', "Any supported digest"},
 100 #ifndef OPENSSL_NO_MD5
 101     {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
 102 #endif
 103     {NULL}
 104 };
 105
 106 int crl_main(int argc, char **argv)
 107 {
 108     X509_CRL *x = NULL;
 109     BIO *out = NULL;
 110     X509_STORE *store = NULL;
 111     X509_STORE_CTX ctx;
 112     X509_LOOKUP *lookup = NULL;
 113     X509_OBJECT xobj;
 114     EVP_PKEY *pkey;
 115     const EVP_MD *digest = EVP_sha1();
 116     unsigned long nmflag = 0;
 117     char nmflag_set = 0;
 118     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
 119     char *CAfile = NULL, *CApath = NULL, *prog;
 120     OPTION_CHOICE o;
 121     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
 122     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 123     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
 124     int text = 0, do_ver = 0;
 125     int i;
 126 #ifndef OPENSSL_NO_MD5
 127     int hash_old = 0;
 128 #endif
 129
 130     prog = opt_init(argc, argv, crl_options);
 131     while ((o = opt_next()) != OPT_EOF) {
 132         switch (o) {
 133         case OPT_EOF:
 134         case OPT_ERR:
 135  opthelp:
 136             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 137             goto end;
 138         case OPT_HELP:
 139             opt_help(crl_options);
 140             ret = 0;
 141             goto end;
 142         case OPT_INFORM:
 143             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 144                 goto opthelp;
 145             break;
 146         case OPT_IN:
 147             infile = opt_arg();
 148             break;
 149         case OPT_OUTFORM:
 150             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 151                 goto opthelp;
 152             break;
 153         case OPT_OUT:
 154             outfile = opt_arg();
 155             break;
 156         case OPT_KEYFORM:
 157             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 158                 goto opthelp;
 159             break;
 160         case OPT_KEY:
 161             keyfile = opt_arg();
 162             break;
 163         case OPT_GENDELTA:
 164             crldiff = opt_arg();
 165             break;
 166         case OPT_CAPATH:
 167             CApath = opt_arg();
 168             do_ver = 1;
 169             break;
 170         case OPT_CAFILE:
 171             CAfile = opt_arg();
 172             do_ver = 1;
 173             break;
 174         case OPT_HASH_OLD:
 175 #ifndef OPENSSL_NO_MD5
 176             hash_old = ++num;
 177 #endif
 178             break;
 179         case OPT_VERIFY:
 180             do_ver = 1;
 181             break;
 182         case OPT_TEXT:
 183             text = 1;
 184             break;
 185         case OPT_HASH:
 186             hash = ++num;
 187             break;
 188         case OPT_ISSUER:
 189             issuer = ++num;
 190             break;
 191         case OPT_LASTUPDATE:
 192             lastupdate = ++num;
 193             break;
 194         case OPT_NEXTUPDATE:
 195             nextupdate = ++num;
 196             break;
 197         case OPT_NOOUT:
 198             noout = ++num;
 199             break;
 200         case OPT_FINGERPRINT:
 201             fingerprint = ++num;
 202             break;
 203         case OPT_CRLNUMBER:
 204             crlnumber = ++num;
 205             break;
 206         case OPT_BADSIG:
 207             badsig = 1;
 208             break;
 209         case OPT_NAMEOPT:
 210             nmflag_set = 1;
 211             if (!set_name_ex(&nmflag, opt_arg()))
 212                 goto opthelp;
 213             break;
 214         case OPT_MD:
 215             if (!opt_md(opt_unknown(), &digest))
 216                 goto opthelp;
 217         }
 218     }
 219     argc = opt_num_rest();
 220     argv = opt_rest();
 221
 222     if (!nmflag_set)
 223         nmflag = XN_FLAG_ONELINE;
 224
 225     if (!app_load_modules(NULL))
 226         goto end;
 227
 228     x = load_crl(infile, informat);
 229     if (x == NULL)
 230         goto end;
 231
 232     if (do_ver) {
 233         if ((store = setup_verify(CAfile, CApath)) == NULL)
 234             goto end;
 235         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 236         if (lookup == NULL)
 237             goto end;
 238         if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 239             BIO_printf(bio_err, "Error initialising X509 store\n");
 240             goto end;
 241         }
 242
 243         i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 244                                       X509_CRL_get_issuer(x), &xobj);
 245         if (i <= 0) {
 246             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 247             goto end;
 248         }
 249         pkey = X509_get_pubkey(xobj.data.x509);
 250         X509_OBJECT_free_contents(&xobj);
 251         if (!pkey) {
 252             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 253             goto end;
 254         }
 255         i = X509_CRL_verify(x, pkey);
 256         EVP_PKEY_free(pkey);
 257         if (i < 0)
 258             goto end;
 259         if (i == 0)
 260             BIO_printf(bio_err, "verify failure\n");
 261         else
 262             BIO_printf(bio_err, "verify OK\n");
 263     }
 264
 265     if (crldiff) {
 266         X509_CRL *newcrl, *delta;
 267         if (!keyfile) {
 268             BIO_puts(bio_err, "Missing CRL signing key\n");
 269             goto end;
 270         }
 271         newcrl = load_crl(crldiff, informat);
 272         if (!newcrl)
 273             goto end;
 274         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 275         if (!pkey) {
 276             X509_CRL_free(newcrl);
 277             goto end;
 278         }
 279         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 280         X509_CRL_free(newcrl);
 281         EVP_PKEY_free(pkey);
 282         if (delta) {
 283             X509_CRL_free(x);
 284             x = delta;
 285         } else {
 286             BIO_puts(bio_err, "Error creating delta CRL\n");
 287             goto end;
 288         }
 289     }
 290
 291     if (num) {
 292         for (i = 1; i <= num; i++) {
 293             if (issuer == i) {
 294                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 295                            nmflag);
 296             }
 297             if (crlnumber == i) {
 298                 ASN1_INTEGER *crlnum;
 299                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 300                 BIO_printf(bio_out, "crlNumber=");
 301                 if (crlnum) {
 302                     i2a_ASN1_INTEGER(bio_out, crlnum);
 303                     ASN1_INTEGER_free(crlnum);
 304                 } else
 305                     BIO_puts(bio_out, "<NONE>");
 306                 BIO_printf(bio_out, "\n");
 307             }
 308             if (hash == i) {
 309                 BIO_printf(bio_out, "%08lx\n",
 310                            X509_NAME_hash(X509_CRL_get_issuer(x)));
 311             }
 312 #ifndef OPENSSL_NO_MD5
 313             if (hash_old == i) {
 314                 BIO_printf(bio_out, "%08lx\n",
 315                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 316             }
 317 #endif
 318             if (lastupdate == i) {
 319                 BIO_printf(bio_out, "lastUpdate=");
 320                 ASN1_TIME_print(bio_out, X509_CRL_get_lastUpdate(x));
 321                 BIO_printf(bio_out, "\n");
 322             }
 323             if (nextupdate == i) {
 324                 BIO_printf(bio_out, "nextUpdate=");
 325                 if (X509_CRL_get_nextUpdate(x))
 326                     ASN1_TIME_print(bio_out, X509_CRL_get_nextUpdate(x));
 327                 else
 328                     BIO_printf(bio_out, "NONE");
 329                 BIO_printf(bio_out, "\n");
 330             }
 331             if (fingerprint == i) {
 332                 int j;
 333                 unsigned int n;
 334                 unsigned char md[EVP_MAX_MD_SIZE];
 335
 336                 if (!X509_CRL_digest(x, digest, md, &n)) {
 337                     BIO_printf(bio_err, "out of memory\n");
 338                     goto end;
 339                 }
 340                 BIO_printf(bio_out, "%s Fingerprint=",
 341                            OBJ_nid2sn(EVP_MD_type(digest)));
 342                 for (j = 0; j < (int)n; j++) {
 343                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 344                                ? '\n' : ':');
 345                 }
 346             }
 347         }
 348     }
 349     out = bio_open_default(outfile, "w");
 350     if (out == NULL)
 351         goto end;
 352
 353     if (text)
 354         X509_CRL_print(out, x);
 355
 356     if (noout) {
 357         ret = 0;
 358         goto end;
 359     }
 360
 361     if (badsig) {
 362         ASN1_BIT_STRING *sig;
 363         unsigned char *psig;
 364         X509_CRL_get0_signature(&sig, NULL, x);
 365         psig = ASN1_STRING_data(sig);
 366         psig[ASN1_STRING_length(sig) - 1] ^= 0x1;
 367     }
 368
 369     if (outformat == FORMAT_ASN1)
 370         i = (int)i2d_X509_CRL_bio(out, x);
 371     else
 372         i = PEM_write_bio_X509_CRL(out, x);
 373     if (!i) {
 374         BIO_printf(bio_err, "unable to write CRL\n");
 375         goto end;
 376     }
 377     ret = 0;
 378
 379  end:
 380     if (ret != 0)
 381         ERR_print_errors(bio_err);
 382     BIO_free_all(out);
 383     X509_CRL_free(x);
 384     if (store) {
 385         X509_STORE_CTX_cleanup(&ctx);
 386         X509_STORE_free(store);
 387     }
 388     return (ret);
 389 }