crypto/openssl/apps/crl.c

   1 /* apps/crl.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 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/x509v3.h>
  67 #include <openssl/pem.h>
  68
  69 #undef PROG
  70 #define PROG    crl_main
  71
  72 #undef POSTFIX
  73 #define POSTFIX ".rvk"
  74
  75 static const char *crl_usage[] = {
  76     "usage: crl args\n",
  77     "\n",
  78     " -inform arg     - input format - default PEM (DER or PEM)\n",
  79     " -outform arg    - output format - default PEM\n",
  80     " -text           - print out a text format version\n",
  81     " -in arg         - input file - default stdin\n",
  82     " -out arg        - output file - default stdout\n",
  83     " -hash           - print hash value\n",
  84 #ifndef OPENSSL_NO_MD5
  85     " -hash_old       - print old-style (MD5) hash value\n",
  86 #endif
  87     " -fingerprint    - print the crl fingerprint\n",
  88     " -issuer         - print issuer DN\n",
  89     " -lastupdate     - lastUpdate field\n",
  90     " -nextupdate     - nextUpdate field\n",
  91     " -crlnumber      - print CRL number\n",
  92     " -noout          - no CRL output\n",
  93     " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
  94     " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
  95     " -nameopt arg    - various certificate name options\n",
  96     NULL
  97 };
  98
  99 static BIO *bio_out = NULL;
 100
 101 int MAIN(int, char **);
 102
 103 int MAIN(int argc, char **argv)
 104 {
 105     unsigned long nmflag = 0;
 106     X509_CRL *x = NULL;
 107     char *CAfile = NULL, *CApath = NULL;
 108     int ret = 1, i, num, badops = 0, badsig = 0;
 109     BIO *out = NULL;
 110     int informat, outformat, keyformat;
 111     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
 112     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout =
 113         0, text = 0;
 114 #ifndef OPENSSL_NO_MD5
 115     int hash_old = 0;
 116 #endif
 117     int fingerprint = 0, crlnumber = 0;
 118     const char **pp;
 119     X509_STORE *store = NULL;
 120     X509_STORE_CTX ctx;
 121     X509_LOOKUP *lookup = NULL;
 122     X509_OBJECT xobj;
 123     EVP_PKEY *pkey;
 124     int do_ver = 0;
 125     const EVP_MD *md_alg, *digest = EVP_sha1();
 126
 127     apps_startup();
 128
 129     if (bio_err == NULL)
 130         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 131             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 132
 133     if (!load_config(bio_err, NULL))
 134         goto end;
 135
 136     if (bio_out == NULL)
 137         if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
 138             BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
 139 #ifdef OPENSSL_SYS_VMS
 140             {
 141                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 142                 bio_out = BIO_push(tmpbio, bio_out);
 143             }
 144 #endif
 145         }
 146
 147     informat = FORMAT_PEM;
 148     outformat = FORMAT_PEM;
 149     keyformat = FORMAT_PEM;
 150
 151     argc--;
 152     argv++;
 153     num = 0;
 154     while (argc >= 1) {
 155 #ifdef undef
 156         if (strcmp(*argv, "-p") == 0) {
 157             if (--argc < 1)
 158                 goto bad;
 159             if (!args_from_file(++argv, Nargc, Nargv)) {
 160                 goto end;
 161             }
 162         */}
 163 #endif
 164         if (strcmp(*argv, "-inform") == 0) {
 165             if (--argc < 1)
 166                 goto bad;
 167             informat = str2fmt(*(++argv));
 168         } else if (strcmp(*argv, "-outform") == 0) {
 169             if (--argc < 1)
 170                 goto bad;
 171             outformat = str2fmt(*(++argv));
 172         } else if (strcmp(*argv, "-in") == 0) {
 173             if (--argc < 1)
 174                 goto bad;
 175             infile = *(++argv);
 176         } else if (strcmp(*argv, "-gendelta") == 0) {
 177             if (--argc < 1)
 178                 goto bad;
 179             crldiff = *(++argv);
 180         } else if (strcmp(*argv, "-key") == 0) {
 181             if (--argc < 1)
 182                 goto bad;
 183             keyfile = *(++argv);
 184         } else if (strcmp(*argv, "-keyform") == 0) {
 185             if (--argc < 1)
 186                 goto bad;
 187             keyformat = str2fmt(*(++argv));
 188         } else if (strcmp(*argv, "-out") == 0) {
 189             if (--argc < 1)
 190                 goto bad;
 191             outfile = *(++argv);
 192         } else if (strcmp(*argv, "-CApath") == 0) {
 193             if (--argc < 1)
 194                 goto bad;
 195             CApath = *(++argv);
 196             do_ver = 1;
 197         } else if (strcmp(*argv, "-CAfile") == 0) {
 198             if (--argc < 1)
 199                 goto bad;
 200             CAfile = *(++argv);
 201             do_ver = 1;
 202         } else if (strcmp(*argv, "-verify") == 0)
 203             do_ver = 1;
 204         else if (strcmp(*argv, "-text") == 0)
 205             text = 1;
 206         else if (strcmp(*argv, "-hash") == 0)
 207             hash = ++num;
 208 #ifndef OPENSSL_NO_MD5
 209         else if (strcmp(*argv, "-hash_old") == 0)
 210             hash_old = ++num;
 211 #endif
 212         else if (strcmp(*argv, "-nameopt") == 0) {
 213             if (--argc < 1)
 214                 goto bad;
 215             if (!set_name_ex(&nmflag, *(++argv)))
 216                 goto bad;
 217         } else if (strcmp(*argv, "-issuer") == 0)
 218             issuer = ++num;
 219         else if (strcmp(*argv, "-lastupdate") == 0)
 220             lastupdate = ++num;
 221         else if (strcmp(*argv, "-nextupdate") == 0)
 222             nextupdate = ++num;
 223         else if (strcmp(*argv, "-noout") == 0)
 224             noout = ++num;
 225         else if (strcmp(*argv, "-fingerprint") == 0)
 226             fingerprint = ++num;
 227         else if (strcmp(*argv, "-crlnumber") == 0)
 228             crlnumber = ++num;
 229         else if (strcmp(*argv, "-badsig") == 0)
 230             badsig = 1;
 231         else if ((md_alg = EVP_get_digestbyname(*argv + 1))) {
 232             /* ok */
 233             digest = md_alg;
 234         } else {
 235             BIO_printf(bio_err, "unknown option %s\n", *argv);
 236             badops = 1;
 237             break;
 238         }
 239         argc--;
 240         argv++;
 241     }
 242
 243     if (badops) {
 244  bad:
 245         for (pp = crl_usage; (*pp != NULL); pp++)
 246             BIO_printf(bio_err, "%s", *pp);
 247         goto end;
 248     }
 249
 250     ERR_load_crypto_strings();
 251     x = load_crl(infile, informat);
 252     if (x == NULL) {
 253         goto end;
 254     }
 255
 256     if (do_ver) {
 257         store = X509_STORE_new();
 258         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 259         if (lookup == NULL)
 260             goto end;
 261         if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM))
 262             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
 263
 264         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
 265         if (lookup == NULL)
 266             goto end;
 267         if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM))
 268             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
 269         ERR_clear_error();
 270
 271         if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
 272             BIO_printf(bio_err, "Error initialising X509 store\n");
 273             goto end;
 274         }
 275
 276         i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
 277                                       X509_CRL_get_issuer(x), &xobj);
 278         if (i <= 0) {
 279             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 280             goto end;
 281         }
 282         pkey = X509_get_pubkey(xobj.data.x509);
 283         X509_OBJECT_free_contents(&xobj);
 284         if (!pkey) {
 285             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 286             goto end;
 287         }
 288         i = X509_CRL_verify(x, pkey);
 289         EVP_PKEY_free(pkey);
 290         if (i < 0)
 291             goto end;
 292         if (i == 0)
 293             BIO_printf(bio_err, "verify failure\n");
 294         else
 295             BIO_printf(bio_err, "verify OK\n");
 296     }
 297
 298     if (crldiff) {
 299         X509_CRL *newcrl, *delta;
 300         if (!keyfile) {
 301             BIO_puts(bio_err, "Missing CRL signing key\n");
 302             goto end;
 303         }
 304         newcrl = load_crl(crldiff, informat);
 305         if (!newcrl)
 306             goto end;
 307         pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
 308                         "CRL signing key");
 309         if (!pkey) {
 310             X509_CRL_free(newcrl);
 311             goto end;
 312         }
 313         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 314         X509_CRL_free(newcrl);
 315         EVP_PKEY_free(pkey);
 316         if (delta) {
 317             X509_CRL_free(x);
 318             x = delta;
 319         } else {
 320             BIO_puts(bio_err, "Error creating delta CRL\n");
 321             goto end;
 322         }
 323     }
 324
 325     if (num) {
 326         for (i = 1; i <= num; i++) {
 327             if (issuer == i) {
 328                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 329                            nmflag);
 330             }
 331             if (crlnumber == i) {
 332                 ASN1_INTEGER *crlnum;
 333                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 334                 BIO_printf(bio_out, "crlNumber=");
 335                 if (crlnum) {
 336                     i2a_ASN1_INTEGER(bio_out, crlnum);
 337                     ASN1_INTEGER_free(crlnum);
 338                 } else
 339                     BIO_puts(bio_out, "<NONE>");
 340                 BIO_printf(bio_out, "\n");
 341             }
 342             if (hash == i) {
 343                 BIO_printf(bio_out, "%08lx\n",
 344                            X509_NAME_hash(X509_CRL_get_issuer(x)));
 345             }
 346 #ifndef OPENSSL_NO_MD5
 347             if (hash_old == i) {
 348                 BIO_printf(bio_out, "%08lx\n",
 349                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 350             }
 351 #endif
 352             if (lastupdate == i) {
 353                 BIO_printf(bio_out, "lastUpdate=");
 354                 ASN1_TIME_print(bio_out, X509_CRL_get_lastUpdate(x));
 355                 BIO_printf(bio_out, "\n");
 356             }
 357             if (nextupdate == i) {
 358                 BIO_printf(bio_out, "nextUpdate=");
 359                 if (X509_CRL_get_nextUpdate(x))
 360                     ASN1_TIME_print(bio_out, X509_CRL_get_nextUpdate(x));
 361                 else
 362                     BIO_printf(bio_out, "NONE");
 363                 BIO_printf(bio_out, "\n");
 364             }
 365             if (fingerprint == i) {
 366                 int j;
 367                 unsigned int n;
 368                 unsigned char md[EVP_MAX_MD_SIZE];
 369
 370                 if (!X509_CRL_digest(x, digest, md, &n)) {
 371                     BIO_printf(bio_err, "out of memory\n");
 372                     goto end;
 373                 }
 374                 BIO_printf(bio_out, "%s Fingerprint=",
 375                            OBJ_nid2sn(EVP_MD_type(digest)));
 376                 for (j = 0; j < (int)n; j++) {
 377                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 378                                ? '\n' : ':');
 379                 }
 380             }
 381         }
 382     }
 383
 384     out = BIO_new(BIO_s_file());
 385     if (out == NULL) {
 386         ERR_print_errors(bio_err);
 387         goto end;
 388     }
 389
 390     if (outfile == NULL) {
 391         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 392 #ifdef OPENSSL_SYS_VMS
 393         {
 394             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 395             out = BIO_push(tmpbio, out);
 396         }
 397 #endif
 398     } else {
 399         if (BIO_write_filename(out, outfile) <= 0) {
 400             perror(outfile);
 401             goto end;
 402         }
 403     }
 404
 405     if (text)
 406         X509_CRL_print(out, x);
 407
 408     if (noout) {
 409         ret = 0;
 410         goto end;
 411     }
 412
 413     if (badsig)
 414         x->signature->data[x->signature->length - 1] ^= 0x1;
 415
 416     if (outformat == FORMAT_ASN1)
 417         i = (int)i2d_X509_CRL_bio(out, x);
 418     else if (outformat == FORMAT_PEM)
 419         i = PEM_write_bio_X509_CRL(out, x);
 420     else {
 421         BIO_printf(bio_err, "bad output format specified for outfile\n");
 422         goto end;
 423     }
 424     if (!i) {
 425         BIO_printf(bio_err, "unable to write CRL\n");
 426         goto end;
 427     }
 428     ret = 0;
 429  end:
 430     if (ret != 0)
 431         ERR_print_errors(bio_err);
 432     BIO_free_all(out);
 433     BIO_free_all(bio_out);
 434     bio_out = NULL;
 435     X509_CRL_free(x);
 436     if (store) {
 437         X509_STORE_CTX_cleanup(&ctx);
 438         X509_STORE_free(store);
 439     }
 440     apps_shutdown();
 441     OPENSSL_EXIT(ret);
 442 }