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 } 443