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| 1 /* crypto/ts/ts_conf.c */ |
| 2 /* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL |
| 3 * project 2002. |
| 4 */ |
| 5 /* ==================================================================== |
| 6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
| 7 * |
| 8 * Redistribution and use in source and binary forms, with or without |
| 9 * modification, are permitted provided that the following conditions |
| 10 * are met: |
| 11 * |
| 12 * 1. Redistributions of source code must retain the above copyright |
| 13 * notice, this list of conditions and the following disclaimer. |
| 14 * |
| 15 * 2. Redistributions in binary form must reproduce the above copyright |
| 16 * notice, this list of conditions and the following disclaimer in |
| 17 * the documentation and/or other materials provided with the |
| 18 * distribution. |
| 19 * |
| 20 * 3. All advertising materials mentioning features or use of this |
| 21 * software must display the following acknowledgment: |
| 22 * "This product includes software developed by the OpenSSL Project |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 24 * |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 * endorse or promote products derived from this software without |
| 27 * prior written permission. For written permission, please contact |
| 28 * licensing@OpenSSL.org. |
| 29 * |
| 30 * 5. Products derived from this software may not be called "OpenSSL" |
| 31 * nor may "OpenSSL" appear in their names without prior written |
| 32 * permission of the OpenSSL Project. |
| 33 * |
| 34 * 6. Redistributions of any form whatsoever must retain the following |
| 35 * acknowledgment: |
| 36 * "This product includes software developed by the OpenSSL Project |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 * |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 * ==================================================================== |
| 52 * |
| 53 * This product includes cryptographic software written by Eric Young |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 * Hudson (tjh@cryptsoft.com). |
| 56 * |
| 57 */ |
| 58 |
| 59 #include <string.h> |
| 60 |
| 61 #include <openssl/crypto.h> |
| 62 #include "cryptlib.h" |
| 63 #include <openssl/pem.h> |
| 64 #ifndef OPENSSL_NO_ENGINE |
| 65 #include <openssl/engine.h> |
| 66 #endif |
| 67 #include <openssl/ts.h> |
| 68 |
| 69 /* Macro definitions for the configuration file. */ |
| 70 |
| 71 #define BASE_SECTION "tsa" |
| 72 #define ENV_DEFAULT_TSA "default_tsa" |
| 73 #define ENV_SERIAL "serial" |
| 74 #define ENV_CRYPTO_DEVICE "crypto_device" |
| 75 #define ENV_SIGNER_CERT "signer_cert" |
| 76 #define ENV_CERTS "certs" |
| 77 #define ENV_SIGNER_KEY "signer_key" |
| 78 #define ENV_DEFAULT_POLICY "default_policy" |
| 79 #define ENV_OTHER_POLICIES "other_policies" |
| 80 #define ENV_DIGESTS "digests" |
| 81 #define ENV_ACCURACY "accuracy" |
| 82 #define ENV_ORDERING "ordering" |
| 83 #define ENV_TSA_NAME "tsa_name" |
| 84 #define ENV_ESS_CERT_ID_CHAIN "ess_cert_id_chain" |
| 85 #define ENV_VALUE_SECS "secs" |
| 86 #define ENV_VALUE_MILLISECS "millisecs" |
| 87 #define ENV_VALUE_MICROSECS "microsecs" |
| 88 #define ENV_CLOCK_PRECISION_DIGITS "clock_precision_digits" |
| 89 #define ENV_VALUE_YES "yes" |
| 90 #define ENV_VALUE_NO "no" |
| 91 |
| 92 /* Function definitions for certificate and key loading. */ |
| 93 |
| 94 X509 *TS_CONF_load_cert(const char *file) |
| 95 { |
| 96 BIO *cert = NULL; |
| 97 X509 *x = NULL; |
| 98 |
| 99 if ((cert = BIO_new_file(file, "r")) == NULL) goto end; |
| 100 x = PEM_read_bio_X509_AUX(cert, NULL, NULL, NULL); |
| 101 end: |
| 102 if (x == NULL) |
| 103 fprintf(stderr, "unable to load certificate: %s\n", file); |
| 104 BIO_free(cert); |
| 105 return x; |
| 106 } |
| 107 |
| 108 STACK_OF(X509) *TS_CONF_load_certs(const char *file) |
| 109 { |
| 110 BIO *certs = NULL; |
| 111 STACK_OF(X509) *othercerts = NULL; |
| 112 STACK_OF(X509_INFO) *allcerts = NULL; |
| 113 int i; |
| 114 |
| 115 if (!(certs = BIO_new_file(file, "r"))) goto end; |
| 116 |
| 117 if (!(othercerts = sk_X509_new_null())) goto end; |
| 118 allcerts = PEM_X509_INFO_read_bio(certs, NULL, NULL, NULL); |
| 119 for(i = 0; i < sk_X509_INFO_num(allcerts); i++) |
| 120 { |
| 121 X509_INFO *xi = sk_X509_INFO_value(allcerts, i); |
| 122 if (xi->x509) |
| 123 { |
| 124 sk_X509_push(othercerts, xi->x509); |
| 125 xi->x509 = NULL; |
| 126 } |
| 127 } |
| 128 end: |
| 129 if (othercerts == NULL) |
| 130 fprintf(stderr, "unable to load certificates: %s\n", file); |
| 131 sk_X509_INFO_pop_free(allcerts, X509_INFO_free); |
| 132 BIO_free(certs); |
| 133 return othercerts; |
| 134 } |
| 135 |
| 136 EVP_PKEY *TS_CONF_load_key(const char *file, const char *pass) |
| 137 { |
| 138 BIO *key = NULL; |
| 139 EVP_PKEY *pkey = NULL; |
| 140 |
| 141 if (!(key = BIO_new_file(file, "r"))) goto end; |
| 142 pkey = PEM_read_bio_PrivateKey(key, NULL, NULL, (char *) pass); |
| 143 end: |
| 144 if (pkey == NULL) |
| 145 fprintf(stderr, "unable to load private key: %s\n", file); |
| 146 BIO_free(key); |
| 147 return pkey; |
| 148 } |
| 149 |
| 150 /* Function definitions for handling configuration options. */ |
| 151 |
| 152 static void TS_CONF_lookup_fail(const char *name, const char *tag) |
| 153 { |
| 154 fprintf(stderr, "variable lookup failed for %s::%s\n", name, tag); |
| 155 } |
| 156 |
| 157 static void TS_CONF_invalid(const char *name, const char *tag) |
| 158 { |
| 159 fprintf(stderr, "invalid variable value for %s::%s\n", name, tag); |
| 160 } |
| 161 |
| 162 const char *TS_CONF_get_tsa_section(CONF *conf, const char *section) |
| 163 { |
| 164 if (!section) |
| 165 { |
| 166 section = NCONF_get_string(conf, BASE_SECTION, ENV_DEFAULT_TSA); |
| 167 if (!section) |
| 168 TS_CONF_lookup_fail(BASE_SECTION, ENV_DEFAULT_TSA); |
| 169 } |
| 170 return section; |
| 171 } |
| 172 |
| 173 int TS_CONF_set_serial(CONF *conf, const char *section, TS_serial_cb cb, |
| 174 TS_RESP_CTX *ctx) |
| 175 { |
| 176 int ret = 0; |
| 177 char *serial = NCONF_get_string(conf, section, ENV_SERIAL); |
| 178 if (!serial) |
| 179 { |
| 180 TS_CONF_lookup_fail(section, ENV_SERIAL); |
| 181 goto err; |
| 182 } |
| 183 TS_RESP_CTX_set_serial_cb(ctx, cb, serial); |
| 184 |
| 185 ret = 1; |
| 186 err: |
| 187 return ret; |
| 188 } |
| 189 |
| 190 #ifndef OPENSSL_NO_ENGINE |
| 191 |
| 192 int TS_CONF_set_crypto_device(CONF *conf, const char *section, |
| 193 const char *device) |
| 194 { |
| 195 int ret = 0; |
| 196 |
| 197 if (!device) |
| 198 device = NCONF_get_string(conf, section, |
| 199 ENV_CRYPTO_DEVICE); |
| 200 |
| 201 if (device && !TS_CONF_set_default_engine(device)) |
| 202 { |
| 203 TS_CONF_invalid(section, ENV_CRYPTO_DEVICE); |
| 204 goto err; |
| 205 } |
| 206 ret = 1; |
| 207 err: |
| 208 return ret; |
| 209 } |
| 210 |
| 211 int TS_CONF_set_default_engine(const char *name) |
| 212 { |
| 213 ENGINE *e = NULL; |
| 214 int ret = 0; |
| 215 |
| 216 /* Leave the default if builtin specified. */ |
| 217 if (strcmp(name, "builtin") == 0) return 1; |
| 218 |
| 219 if (!(e = ENGINE_by_id(name))) goto err; |
| 220 /* Enable the use of the NCipher HSM for forked children. */ |
| 221 if (strcmp(name, "chil") == 0) |
| 222 ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0); |
| 223 /* All the operations are going to be carried out by the engine. */ |
| 224 if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) goto err; |
| 225 ret = 1; |
| 226 err: |
| 227 if (!ret) |
| 228 { |
| 229 TSerr(TS_F_TS_CONF_SET_DEFAULT_ENGINE, |
| 230 TS_R_COULD_NOT_SET_ENGINE); |
| 231 ERR_add_error_data(2, "engine:", name); |
| 232 } |
| 233 if (e) ENGINE_free(e); |
| 234 return ret; |
| 235 } |
| 236 |
| 237 #endif |
| 238 |
| 239 int TS_CONF_set_signer_cert(CONF *conf, const char *section, |
| 240 const char *cert, TS_RESP_CTX *ctx) |
| 241 { |
| 242 int ret = 0; |
| 243 X509 *cert_obj = NULL; |
| 244 if (!cert) |
| 245 cert = NCONF_get_string(conf, section, ENV_SIGNER_CERT); |
| 246 if (!cert) |
| 247 { |
| 248 TS_CONF_lookup_fail(section, ENV_SIGNER_CERT); |
| 249 goto err; |
| 250 } |
| 251 if (!(cert_obj = TS_CONF_load_cert(cert))) |
| 252 goto err; |
| 253 if (!TS_RESP_CTX_set_signer_cert(ctx, cert_obj)) |
| 254 goto err; |
| 255 |
| 256 ret = 1; |
| 257 err: |
| 258 X509_free(cert_obj); |
| 259 return ret; |
| 260 } |
| 261 |
| 262 int TS_CONF_set_certs(CONF *conf, const char *section, const char *certs, |
| 263 TS_RESP_CTX *ctx) |
| 264 { |
| 265 int ret = 0; |
| 266 STACK_OF(X509) *certs_obj = NULL; |
| 267 if (!certs) |
| 268 certs = NCONF_get_string(conf, section, ENV_CERTS); |
| 269 /* Certificate chain is optional. */ |
| 270 if (!certs) goto end; |
| 271 if (!(certs_obj = TS_CONF_load_certs(certs))) goto err; |
| 272 if (!TS_RESP_CTX_set_certs(ctx, certs_obj)) goto err; |
| 273 end: |
| 274 ret = 1; |
| 275 err: |
| 276 sk_X509_pop_free(certs_obj, X509_free); |
| 277 return ret; |
| 278 } |
| 279 |
| 280 int TS_CONF_set_signer_key(CONF *conf, const char *section, |
| 281 const char *key, const char *pass, |
| 282 TS_RESP_CTX *ctx) |
| 283 { |
| 284 int ret = 0; |
| 285 EVP_PKEY *key_obj = NULL; |
| 286 if (!key) |
| 287 key = NCONF_get_string(conf, section, ENV_SIGNER_KEY); |
| 288 if (!key) |
| 289 { |
| 290 TS_CONF_lookup_fail(section, ENV_SIGNER_KEY); |
| 291 goto err; |
| 292 } |
| 293 if (!(key_obj = TS_CONF_load_key(key, pass))) goto err; |
| 294 if (!TS_RESP_CTX_set_signer_key(ctx, key_obj)) goto err; |
| 295 |
| 296 ret = 1; |
| 297 err: |
| 298 EVP_PKEY_free(key_obj); |
| 299 return ret; |
| 300 } |
| 301 |
| 302 int TS_CONF_set_def_policy(CONF *conf, const char *section, |
| 303 const char *policy, TS_RESP_CTX *ctx) |
| 304 { |
| 305 int ret = 0; |
| 306 ASN1_OBJECT *policy_obj = NULL; |
| 307 if (!policy) |
| 308 policy = NCONF_get_string(conf, section, |
| 309 ENV_DEFAULT_POLICY); |
| 310 if (!policy) |
| 311 { |
| 312 TS_CONF_lookup_fail(section, ENV_DEFAULT_POLICY); |
| 313 goto err; |
| 314 } |
| 315 if (!(policy_obj = OBJ_txt2obj(policy, 0))) |
| 316 { |
| 317 TS_CONF_invalid(section, ENV_DEFAULT_POLICY); |
| 318 goto err; |
| 319 } |
| 320 if (!TS_RESP_CTX_set_def_policy(ctx, policy_obj)) |
| 321 goto err; |
| 322 |
| 323 ret = 1; |
| 324 err: |
| 325 ASN1_OBJECT_free(policy_obj); |
| 326 return ret; |
| 327 } |
| 328 |
| 329 int TS_CONF_set_policies(CONF *conf, const char *section, |
| 330 TS_RESP_CTX *ctx) |
| 331 { |
| 332 int ret = 0; |
| 333 int i; |
| 334 STACK_OF(CONF_VALUE) *list = NULL; |
| 335 char *policies = NCONF_get_string(conf, section, |
| 336 ENV_OTHER_POLICIES); |
| 337 /* If no other policy is specified, that's fine. */ |
| 338 if (policies && !(list = X509V3_parse_list(policies))) |
| 339 { |
| 340 TS_CONF_invalid(section, ENV_OTHER_POLICIES); |
| 341 goto err; |
| 342 } |
| 343 for (i = 0; i < sk_CONF_VALUE_num(list); ++i) |
| 344 { |
| 345 CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| 346 const char *extval = val->value ? val->value : val->name; |
| 347 ASN1_OBJECT *objtmp; |
| 348 if (!(objtmp = OBJ_txt2obj(extval, 0))) |
| 349 { |
| 350 TS_CONF_invalid(section, ENV_OTHER_POLICIES); |
| 351 goto err; |
| 352 } |
| 353 if (!TS_RESP_CTX_add_policy(ctx, objtmp)) |
| 354 goto err; |
| 355 ASN1_OBJECT_free(objtmp); |
| 356 } |
| 357 |
| 358 ret = 1; |
| 359 err: |
| 360 sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| 361 return ret; |
| 362 } |
| 363 |
| 364 int TS_CONF_set_digests(CONF *conf, const char *section, |
| 365 TS_RESP_CTX *ctx) |
| 366 { |
| 367 int ret = 0; |
| 368 int i; |
| 369 STACK_OF(CONF_VALUE) *list = NULL; |
| 370 char *digests = NCONF_get_string(conf, section, ENV_DIGESTS); |
| 371 if (!digests) |
| 372 { |
| 373 TS_CONF_lookup_fail(section, ENV_DIGESTS); |
| 374 goto err; |
| 375 } |
| 376 if (!(list = X509V3_parse_list(digests))) |
| 377 { |
| 378 TS_CONF_invalid(section, ENV_DIGESTS); |
| 379 goto err; |
| 380 } |
| 381 if (sk_CONF_VALUE_num(list) == 0) |
| 382 { |
| 383 TS_CONF_invalid(section, ENV_DIGESTS); |
| 384 goto err; |
| 385 } |
| 386 for (i = 0; i < sk_CONF_VALUE_num(list); ++i) |
| 387 { |
| 388 CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| 389 const char *extval = val->value ? val->value : val->name; |
| 390 const EVP_MD *md; |
| 391 if (!(md = EVP_get_digestbyname(extval))) |
| 392 { |
| 393 TS_CONF_invalid(section, ENV_DIGESTS); |
| 394 goto err; |
| 395 } |
| 396 if (!TS_RESP_CTX_add_md(ctx, md)) |
| 397 goto err; |
| 398 } |
| 399 |
| 400 ret = 1; |
| 401 err: |
| 402 sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| 403 return ret; |
| 404 } |
| 405 |
| 406 int TS_CONF_set_accuracy(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| 407 { |
| 408 int ret = 0; |
| 409 int i; |
| 410 int secs = 0, millis = 0, micros = 0; |
| 411 STACK_OF(CONF_VALUE) *list = NULL; |
| 412 char *accuracy = NCONF_get_string(conf, section, ENV_ACCURACY); |
| 413 |
| 414 if (accuracy && !(list = X509V3_parse_list(accuracy))) |
| 415 { |
| 416 TS_CONF_invalid(section, ENV_ACCURACY); |
| 417 goto err; |
| 418 } |
| 419 for (i = 0; i < sk_CONF_VALUE_num(list); ++i) |
| 420 { |
| 421 CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| 422 if (strcmp(val->name, ENV_VALUE_SECS) == 0) |
| 423 { |
| 424 if (val->value) secs = atoi(val->value); |
| 425 } |
| 426 else if (strcmp(val->name, ENV_VALUE_MILLISECS) == 0) |
| 427 { |
| 428 if (val->value) millis = atoi(val->value); |
| 429 } |
| 430 else if (strcmp(val->name, ENV_VALUE_MICROSECS) == 0) |
| 431 { |
| 432 if (val->value) micros = atoi(val->value); |
| 433 } |
| 434 else |
| 435 { |
| 436 TS_CONF_invalid(section, ENV_ACCURACY); |
| 437 goto err; |
| 438 } |
| 439 } |
| 440 if (!TS_RESP_CTX_set_accuracy(ctx, secs, millis, micros)) |
| 441 goto err; |
| 442 |
| 443 ret = 1; |
| 444 err: |
| 445 sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| 446 return ret; |
| 447 } |
| 448 |
| 449 int TS_CONF_set_clock_precision_digits(CONF *conf, const char *section, |
| 450 TS_RESP_CTX *ctx) |
| 451 { |
| 452 int ret = 0; |
| 453 long digits = 0; |
| 454 |
| 455 /* If not specified, set the default value to 0, i.e. sec precision */ |
| 456 if (!NCONF_get_number_e(conf, section, ENV_CLOCK_PRECISION_DIGITS, |
| 457 &digits)) |
| 458 digits = 0; |
| 459 if (digits < 0 || digits > TS_MAX_CLOCK_PRECISION_DIGITS) |
| 460 { |
| 461 TS_CONF_invalid(section, ENV_CLOCK_PRECISION_DIGITS); |
| 462 goto err; |
| 463 } |
| 464 |
| 465 if (!TS_RESP_CTX_set_clock_precision_digits(ctx, digits)) |
| 466 goto err; |
| 467 |
| 468 return 1; |
| 469 err: |
| 470 return ret; |
| 471 } |
| 472 |
| 473 static int TS_CONF_add_flag(CONF *conf, const char *section, const char *field, |
| 474 int flag, TS_RESP_CTX *ctx) |
| 475 { |
| 476 /* Default is false. */ |
| 477 const char *value = NCONF_get_string(conf, section, field); |
| 478 if (value) |
| 479 { |
| 480 if (strcmp(value, ENV_VALUE_YES) == 0) |
| 481 TS_RESP_CTX_add_flags(ctx, flag); |
| 482 else if (strcmp(value, ENV_VALUE_NO) != 0) |
| 483 { |
| 484 TS_CONF_invalid(section, field); |
| 485 return 0; |
| 486 } |
| 487 } |
| 488 |
| 489 return 1; |
| 490 } |
| 491 |
| 492 int TS_CONF_set_ordering(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| 493 { |
| 494 return TS_CONF_add_flag(conf, section, ENV_ORDERING, TS_ORDERING, ctx); |
| 495 } |
| 496 |
| 497 int TS_CONF_set_tsa_name(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| 498 { |
| 499 return TS_CONF_add_flag(conf, section, ENV_TSA_NAME, TS_TSA_NAME, ctx); |
| 500 } |
| 501 |
| 502 int TS_CONF_set_ess_cert_id_chain(CONF *conf, const char *section, |
| 503 TS_RESP_CTX *ctx) |
| 504 { |
| 505 return TS_CONF_add_flag(conf, section, ENV_ESS_CERT_ID_CHAIN, |
| 506 TS_ESS_CERT_ID_CHAIN, ctx); |
| 507 } |
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