1 /* 2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <openssl/opensslconf.h> 11 #ifdef OPENSSL_NO_TS 12 NON_EMPTY_TRANSLATION_UNIT 13 #else 14 # include <stdio.h> 15 # include <stdlib.h> 16 # include <string.h> 17 # include "apps.h" 18 # include "progs.h" 19 # include <openssl/bio.h> 20 # include <openssl/err.h> 21 # include <openssl/pem.h> 22 # include <openssl/rand.h> 23 # include <openssl/ts.h> 24 # include <openssl/bn.h> 25 26 /* Request nonce length, in bits (must be a multiple of 8). */ 27 # define NONCE_LENGTH 64 28 29 /* Name of config entry that defines the OID file. */ 30 # define ENV_OID_FILE "oid_file" 31 32 /* Is |EXACTLY_ONE| of three pointers set? */ 33 # define EXACTLY_ONE(a, b, c) \ 34 (( a && !b && !c) || \ 35 ( b && !a && !c) || \ 36 ( c && !a && !b)) 37 38 static ASN1_OBJECT *txt2obj(const char *oid); 39 static CONF *load_config_file(const char *configfile); 40 41 /* Query related functions. */ 42 static int query_command(const char *data, const char *digest, 43 const EVP_MD *md, const char *policy, int no_nonce, 44 int cert, const char *in, const char *out, int text); 45 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 46 const char *policy, int no_nonce, int cert); 47 static int create_digest(BIO *input, const char *digest, 48 const EVP_MD *md, unsigned char **md_value); 49 static ASN1_INTEGER *create_nonce(int bits); 50 51 /* Reply related functions. */ 52 static int reply_command(CONF *conf, const char *section, const char *engine, 53 const char *queryfile, const char *passin, const char *inkey, 54 const EVP_MD *md, const char *signer, const char *chain, 55 const char *policy, const char *in, int token_in, 56 const char *out, int token_out, int text); 57 static TS_RESP *read_PKCS7(BIO *in_bio); 58 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 59 const char *queryfile, const char *passin, 60 const char *inkey, const EVP_MD *md, const char *signer, 61 const char *chain, const char *policy); 62 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data); 63 static ASN1_INTEGER *next_serial(const char *serialfile); 64 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); 65 66 /* Verify related functions. */ 67 static int verify_command(const char *data, const char *digest, const char *queryfile, 68 const char *in, int token_in, 69 const char *CApath, const char *CAfile, const char *untrusted, 70 X509_VERIFY_PARAM *vpm); 71 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 72 const char *queryfile, 73 const char *CApath, const char *CAfile, 74 const char *untrusted, 75 X509_VERIFY_PARAM *vpm); 76 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 77 X509_VERIFY_PARAM *vpm); 78 static int verify_cb(int ok, X509_STORE_CTX *ctx); 79 80 typedef enum OPTION_choice { 81 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 82 OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, 83 OPT_DIGEST, OPT_TSPOLICY, OPT_NO_NONCE, OPT_CERT, 84 OPT_IN, OPT_TOKEN_IN, OPT_OUT, OPT_TOKEN_OUT, OPT_TEXT, 85 OPT_REPLY, OPT_QUERYFILE, OPT_PASSIN, OPT_INKEY, OPT_SIGNER, 86 OPT_CHAIN, OPT_VERIFY, OPT_CAPATH, OPT_CAFILE, OPT_UNTRUSTED, 87 OPT_MD, OPT_V_ENUM, OPT_R_ENUM 88 } OPTION_CHOICE; 89 90 const OPTIONS ts_options[] = { 91 {"help", OPT_HELP, '-', "Display this summary"}, 92 {"config", OPT_CONFIG, '<', "Configuration file"}, 93 {"section", OPT_SECTION, 's', "Section to use within config file"}, 94 {"query", OPT_QUERY, '-', "Generate a TS query"}, 95 {"data", OPT_DATA, '<', "File to hash"}, 96 {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, 97 OPT_R_OPTIONS, 98 {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, 99 {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, 100 {"cert", OPT_CERT, '-', "Put cert request into query"}, 101 {"in", OPT_IN, '<', "Input file"}, 102 {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, 103 {"out", OPT_OUT, '>', "Output file"}, 104 {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, 105 {"text", OPT_TEXT, '-', "Output text (not DER)"}, 106 {"reply", OPT_REPLY, '-', "Generate a TS reply"}, 107 {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, 108 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 109 {"inkey", OPT_INKEY, 's', "File with private key for reply"}, 110 {"signer", OPT_SIGNER, 's', "Signer certificate file"}, 111 {"chain", OPT_CHAIN, '<', "File with signer CA chain"}, 112 {"verify", OPT_VERIFY, '-', "Verify a TS response"}, 113 {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, 114 {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, 115 {"untrusted", OPT_UNTRUSTED, '<', "File with untrusted certs"}, 116 {"", OPT_MD, '-', "Any supported digest"}, 117 # ifndef OPENSSL_NO_ENGINE 118 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 119 # endif 120 {OPT_HELP_STR, 1, '-', "\nOptions specific to 'ts -verify': \n"}, 121 OPT_V_OPTIONS, 122 {OPT_HELP_STR, 1, '-', "\n"}, 123 {NULL} 124 }; 125 126 /* 127 * This command is so complex, special help is needed. 128 */ 129 static char* opt_helplist[] = { 130 "Typical uses:", 131 "ts -query [-rand file...] [-config file] [-data file]", 132 " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", 133 " [-in file] [-out file] [-text]", 134 " or", 135 "ts -reply [-config file] [-section tsa_section]", 136 " [-queryfile file] [-passin password]", 137 " [-signer tsa_cert.pem] [-inkey private_key.pem]", 138 " [-chain certs_file.pem] [-tspolicy oid]", 139 " [-in file] [-token_in] [-out file] [-token_out]", 140 # ifndef OPENSSL_NO_ENGINE 141 " [-text] [-engine id]", 142 # else 143 " [-text]", 144 # endif 145 " or", 146 "ts -verify -CApath dir -CAfile file.pem -untrusted file.pem", 147 " [-data file] [-digest hexstring]", 148 " [-queryfile file] -in file [-token_in]", 149 " [[options specific to 'ts -verify']]", 150 NULL, 151 }; 152 153 int ts_main(int argc, char **argv) 154 { 155 CONF *conf = NULL; 156 const char *CAfile = NULL, *untrusted = NULL, *prog; 157 const char *configfile = default_config_file, *engine = NULL; 158 const char *section = NULL; 159 char **helpp; 160 char *password = NULL; 161 char *data = NULL, *digest = NULL, *policy = NULL; 162 char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; 163 char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; 164 const EVP_MD *md = NULL; 165 OPTION_CHOICE o, mode = OPT_ERR; 166 int ret = 1, no_nonce = 0, cert = 0, text = 0; 167 int vpmtouched = 0; 168 X509_VERIFY_PARAM *vpm = NULL; 169 /* Input is ContentInfo instead of TimeStampResp. */ 170 int token_in = 0; 171 /* Output is ContentInfo instead of TimeStampResp. */ 172 int token_out = 0; 173 174 if ((vpm = X509_VERIFY_PARAM_new()) == NULL) 175 goto end; 176 177 prog = opt_init(argc, argv, ts_options); 178 while ((o = opt_next()) != OPT_EOF) { 179 switch (o) { 180 case OPT_EOF: 181 case OPT_ERR: 182 opthelp: 183 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 184 goto end; 185 case OPT_HELP: 186 opt_help(ts_options); 187 for (helpp = opt_helplist; *helpp; ++helpp) 188 BIO_printf(bio_err, "%s\n", *helpp); 189 ret = 0; 190 goto end; 191 case OPT_CONFIG: 192 configfile = opt_arg(); 193 break; 194 case OPT_SECTION: 195 section = opt_arg(); 196 break; 197 case OPT_QUERY: 198 case OPT_REPLY: 199 case OPT_VERIFY: 200 if (mode != OPT_ERR) 201 goto opthelp; 202 mode = o; 203 break; 204 case OPT_DATA: 205 data = opt_arg(); 206 break; 207 case OPT_DIGEST: 208 digest = opt_arg(); 209 break; 210 case OPT_R_CASES: 211 if (!opt_rand(o)) 212 goto end; 213 break; 214 case OPT_TSPOLICY: 215 policy = opt_arg(); 216 break; 217 case OPT_NO_NONCE: 218 no_nonce = 1; 219 break; 220 case OPT_CERT: 221 cert = 1; 222 break; 223 case OPT_IN: 224 in = opt_arg(); 225 break; 226 case OPT_TOKEN_IN: 227 token_in = 1; 228 break; 229 case OPT_OUT: 230 out = opt_arg(); 231 break; 232 case OPT_TOKEN_OUT: 233 token_out = 1; 234 break; 235 case OPT_TEXT: 236 text = 1; 237 break; 238 case OPT_QUERYFILE: 239 queryfile = opt_arg(); 240 break; 241 case OPT_PASSIN: 242 passin = opt_arg(); 243 break; 244 case OPT_INKEY: 245 inkey = opt_arg(); 246 break; 247 case OPT_SIGNER: 248 signer = opt_arg(); 249 break; 250 case OPT_CHAIN: 251 chain = opt_arg(); 252 break; 253 case OPT_CAPATH: 254 CApath = opt_arg(); 255 break; 256 case OPT_CAFILE: 257 CAfile = opt_arg(); 258 break; 259 case OPT_UNTRUSTED: 260 untrusted = opt_arg(); 261 break; 262 case OPT_ENGINE: 263 engine = opt_arg(); 264 break; 265 case OPT_MD: 266 if (!opt_md(opt_unknown(), &md)) 267 goto opthelp; 268 break; 269 case OPT_V_CASES: 270 if (!opt_verify(o, vpm)) 271 goto end; 272 vpmtouched++; 273 break; 274 } 275 } 276 if (mode == OPT_ERR || opt_num_rest() != 0) 277 goto opthelp; 278 279 if (mode == OPT_REPLY && passin && 280 !app_passwd(passin, NULL, &password, NULL)) { 281 BIO_printf(bio_err, "Error getting password.\n"); 282 goto end; 283 } 284 285 conf = load_config_file(configfile); 286 if (configfile != default_config_file && !app_load_modules(conf)) 287 goto end; 288 289 /* Check parameter consistency and execute the appropriate function. */ 290 if (mode == OPT_QUERY) { 291 if (vpmtouched) 292 goto opthelp; 293 if ((data != NULL) && (digest != NULL)) 294 goto opthelp; 295 ret = !query_command(data, digest, md, policy, no_nonce, cert, 296 in, out, text); 297 } else if (mode == OPT_REPLY) { 298 if (vpmtouched) 299 goto opthelp; 300 if ((in != NULL) && (queryfile != NULL)) 301 goto opthelp; 302 if (in == NULL) { 303 if ((conf == NULL) || (token_in != 0)) 304 goto opthelp; 305 } 306 ret = !reply_command(conf, section, engine, queryfile, 307 password, inkey, md, signer, chain, policy, 308 in, token_in, out, token_out, text); 309 310 } else if (mode == OPT_VERIFY) { 311 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 312 goto opthelp; 313 ret = !verify_command(data, digest, queryfile, in, token_in, 314 CApath, CAfile, untrusted, 315 vpmtouched ? vpm : NULL); 316 } else { 317 goto opthelp; 318 } 319 320 end: 321 X509_VERIFY_PARAM_free(vpm); 322 NCONF_free(conf); 323 OPENSSL_free(password); 324 return ret; 325 } 326 327 /* 328 * Configuration file-related function definitions. 329 */ 330 331 static ASN1_OBJECT *txt2obj(const char *oid) 332 { 333 ASN1_OBJECT *oid_obj = NULL; 334 335 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 336 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 337 338 return oid_obj; 339 } 340 341 static CONF *load_config_file(const char *configfile) 342 { 343 CONF *conf = app_load_config(configfile); 344 345 if (conf != NULL) { 346 const char *p; 347 348 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 349 p = NCONF_get_string(conf, NULL, ENV_OID_FILE); 350 if (p != NULL) { 351 BIO *oid_bio = BIO_new_file(p, "r"); 352 if (!oid_bio) 353 ERR_print_errors(bio_err); 354 else { 355 OBJ_create_objects(oid_bio); 356 BIO_free_all(oid_bio); 357 } 358 } else 359 ERR_clear_error(); 360 if (!add_oid_section(conf)) 361 ERR_print_errors(bio_err); 362 } 363 return conf; 364 } 365 366 /* 367 * Query-related method definitions. 368 */ 369 static int query_command(const char *data, const char *digest, const EVP_MD *md, 370 const char *policy, int no_nonce, 371 int cert, const char *in, const char *out, int text) 372 { 373 int ret = 0; 374 TS_REQ *query = NULL; 375 BIO *in_bio = NULL; 376 BIO *data_bio = NULL; 377 BIO *out_bio = NULL; 378 379 /* Build query object. */ 380 if (in != NULL) { 381 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 382 goto end; 383 query = d2i_TS_REQ_bio(in_bio, NULL); 384 } else { 385 if (digest == NULL 386 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 387 goto end; 388 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 389 } 390 if (query == NULL) 391 goto end; 392 393 if (text) { 394 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 395 goto end; 396 if (!TS_REQ_print_bio(out_bio, query)) 397 goto end; 398 } else { 399 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 400 goto end; 401 if (!i2d_TS_REQ_bio(out_bio, query)) 402 goto end; 403 } 404 405 ret = 1; 406 407 end: 408 ERR_print_errors(bio_err); 409 BIO_free_all(in_bio); 410 BIO_free_all(data_bio); 411 BIO_free_all(out_bio); 412 TS_REQ_free(query); 413 return ret; 414 } 415 416 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 417 const char *policy, int no_nonce, int cert) 418 { 419 int ret = 0; 420 TS_REQ *ts_req = NULL; 421 int len; 422 TS_MSG_IMPRINT *msg_imprint = NULL; 423 X509_ALGOR *algo = NULL; 424 unsigned char *data = NULL; 425 ASN1_OBJECT *policy_obj = NULL; 426 ASN1_INTEGER *nonce_asn1 = NULL; 427 428 if (md == NULL && (md = EVP_get_digestbyname("sha1")) == NULL) 429 goto err; 430 if ((ts_req = TS_REQ_new()) == NULL) 431 goto err; 432 if (!TS_REQ_set_version(ts_req, 1)) 433 goto err; 434 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 435 goto err; 436 if ((algo = X509_ALGOR_new()) == NULL) 437 goto err; 438 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_type(md))) == NULL) 439 goto err; 440 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 441 goto err; 442 algo->parameter->type = V_ASN1_NULL; 443 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 444 goto err; 445 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 446 goto err; 447 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 448 goto err; 449 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 450 goto err; 451 if (policy && (policy_obj = txt2obj(policy)) == NULL) 452 goto err; 453 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 454 goto err; 455 456 /* Setting nonce if requested. */ 457 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 458 goto err; 459 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 460 goto err; 461 if (!TS_REQ_set_cert_req(ts_req, cert)) 462 goto err; 463 464 ret = 1; 465 err: 466 if (!ret) { 467 TS_REQ_free(ts_req); 468 ts_req = NULL; 469 BIO_printf(bio_err, "could not create query\n"); 470 ERR_print_errors(bio_err); 471 } 472 TS_MSG_IMPRINT_free(msg_imprint); 473 X509_ALGOR_free(algo); 474 OPENSSL_free(data); 475 ASN1_OBJECT_free(policy_obj); 476 ASN1_INTEGER_free(nonce_asn1); 477 return ts_req; 478 } 479 480 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 481 unsigned char **md_value) 482 { 483 int md_value_len; 484 int rv = 0; 485 EVP_MD_CTX *md_ctx = NULL; 486 487 md_value_len = EVP_MD_size(md); 488 if (md_value_len < 0) 489 return 0; 490 491 if (input != NULL) { 492 unsigned char buffer[4096]; 493 int length; 494 495 md_ctx = EVP_MD_CTX_new(); 496 if (md_ctx == NULL) 497 return 0; 498 *md_value = app_malloc(md_value_len, "digest buffer"); 499 if (!EVP_DigestInit(md_ctx, md)) 500 goto err; 501 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 502 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 503 goto err; 504 } 505 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 506 goto err; 507 md_value_len = EVP_MD_size(md); 508 } else { 509 long digest_len; 510 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 511 if (!*md_value || md_value_len != digest_len) { 512 OPENSSL_free(*md_value); 513 *md_value = NULL; 514 BIO_printf(bio_err, "bad digest, %d bytes " 515 "must be specified\n", md_value_len); 516 return 0; 517 } 518 } 519 rv = md_value_len; 520 err: 521 EVP_MD_CTX_free(md_ctx); 522 return rv; 523 } 524 525 static ASN1_INTEGER *create_nonce(int bits) 526 { 527 unsigned char buf[20]; 528 ASN1_INTEGER *nonce = NULL; 529 int len = (bits - 1) / 8 + 1; 530 int i; 531 532 if (len > (int)sizeof(buf)) 533 goto err; 534 if (RAND_bytes(buf, len) <= 0) 535 goto err; 536 537 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 538 for (i = 0; i < len && !buf[i]; ++i) 539 continue; 540 if ((nonce = ASN1_INTEGER_new()) == NULL) 541 goto err; 542 OPENSSL_free(nonce->data); 543 nonce->length = len - i; 544 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 545 memcpy(nonce->data, buf + i, nonce->length); 546 return nonce; 547 548 err: 549 BIO_printf(bio_err, "could not create nonce\n"); 550 ASN1_INTEGER_free(nonce); 551 return NULL; 552 } 553 554 /* 555 * Reply-related method definitions. 556 */ 557 558 static int reply_command(CONF *conf, const char *section, const char *engine, 559 const char *queryfile, const char *passin, const char *inkey, 560 const EVP_MD *md, const char *signer, const char *chain, 561 const char *policy, const char *in, int token_in, 562 const char *out, int token_out, int text) 563 { 564 int ret = 0; 565 TS_RESP *response = NULL; 566 BIO *in_bio = NULL; 567 BIO *query_bio = NULL; 568 BIO *inkey_bio = NULL; 569 BIO *signer_bio = NULL; 570 BIO *out_bio = NULL; 571 572 if (in != NULL) { 573 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 574 goto end; 575 if (token_in) { 576 response = read_PKCS7(in_bio); 577 } else { 578 response = d2i_TS_RESP_bio(in_bio, NULL); 579 } 580 } else { 581 response = create_response(conf, section, engine, queryfile, 582 passin, inkey, md, signer, chain, policy); 583 if (response != NULL) 584 BIO_printf(bio_err, "Response has been generated.\n"); 585 else 586 BIO_printf(bio_err, "Response is not generated.\n"); 587 } 588 if (response == NULL) 589 goto end; 590 591 /* Write response. */ 592 if (text) { 593 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 594 goto end; 595 if (token_out) { 596 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 597 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 598 goto end; 599 } else { 600 if (!TS_RESP_print_bio(out_bio, response)) 601 goto end; 602 } 603 } else { 604 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 605 goto end; 606 if (token_out) { 607 PKCS7 *token = TS_RESP_get_token(response); 608 if (!i2d_PKCS7_bio(out_bio, token)) 609 goto end; 610 } else { 611 if (!i2d_TS_RESP_bio(out_bio, response)) 612 goto end; 613 } 614 } 615 616 ret = 1; 617 618 end: 619 ERR_print_errors(bio_err); 620 BIO_free_all(in_bio); 621 BIO_free_all(query_bio); 622 BIO_free_all(inkey_bio); 623 BIO_free_all(signer_bio); 624 BIO_free_all(out_bio); 625 TS_RESP_free(response); 626 return ret; 627 } 628 629 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 630 static TS_RESP *read_PKCS7(BIO *in_bio) 631 { 632 int ret = 0; 633 PKCS7 *token = NULL; 634 TS_TST_INFO *tst_info = NULL; 635 TS_RESP *resp = NULL; 636 TS_STATUS_INFO *si = NULL; 637 638 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 639 goto end; 640 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 641 goto end; 642 if ((resp = TS_RESP_new()) == NULL) 643 goto end; 644 if ((si = TS_STATUS_INFO_new()) == NULL) 645 goto end; 646 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 647 goto end; 648 if (!TS_RESP_set_status_info(resp, si)) 649 goto end; 650 TS_RESP_set_tst_info(resp, token, tst_info); 651 token = NULL; /* Ownership is lost. */ 652 tst_info = NULL; /* Ownership is lost. */ 653 ret = 1; 654 655 end: 656 PKCS7_free(token); 657 TS_TST_INFO_free(tst_info); 658 if (!ret) { 659 TS_RESP_free(resp); 660 resp = NULL; 661 } 662 TS_STATUS_INFO_free(si); 663 return resp; 664 } 665 666 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 667 const char *queryfile, const char *passin, 668 const char *inkey, const EVP_MD *md, const char *signer, 669 const char *chain, const char *policy) 670 { 671 int ret = 0; 672 TS_RESP *response = NULL; 673 BIO *query_bio = NULL; 674 TS_RESP_CTX *resp_ctx = NULL; 675 676 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 677 goto end; 678 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 679 goto end; 680 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 681 goto end; 682 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 683 goto end; 684 # ifndef OPENSSL_NO_ENGINE 685 if (!TS_CONF_set_crypto_device(conf, section, engine)) 686 goto end; 687 # endif 688 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 689 goto end; 690 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 691 goto end; 692 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 693 goto end; 694 695 if (md) { 696 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 697 goto end; 698 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 699 goto end; 700 } 701 702 if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) 703 goto end; 704 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 705 goto end; 706 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 707 goto end; 708 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 709 goto end; 710 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 711 goto end; 712 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 713 goto end; 714 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 715 goto end; 716 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 717 goto end; 718 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 719 goto end; 720 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 721 goto end; 722 ret = 1; 723 724 end: 725 if (!ret) { 726 TS_RESP_free(response); 727 response = NULL; 728 } 729 TS_RESP_CTX_free(resp_ctx); 730 BIO_free_all(query_bio); 731 return response; 732 } 733 734 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 735 { 736 const char *serial_file = (const char *)data; 737 ASN1_INTEGER *serial = next_serial(serial_file); 738 739 if (serial == NULL) { 740 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 741 "Error during serial number " 742 "generation."); 743 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 744 } else { 745 save_ts_serial(serial_file, serial); 746 } 747 748 return serial; 749 } 750 751 static ASN1_INTEGER *next_serial(const char *serialfile) 752 { 753 int ret = 0; 754 BIO *in = NULL; 755 ASN1_INTEGER *serial = NULL; 756 BIGNUM *bn = NULL; 757 758 if ((serial = ASN1_INTEGER_new()) == NULL) 759 goto err; 760 761 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 762 ERR_clear_error(); 763 BIO_printf(bio_err, "Warning: could not open file %s for " 764 "reading, using serial number: 1\n", serialfile); 765 if (!ASN1_INTEGER_set(serial, 1)) 766 goto err; 767 } else { 768 char buf[1024]; 769 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 770 BIO_printf(bio_err, "unable to load number from %s\n", 771 serialfile); 772 goto err; 773 } 774 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 775 goto err; 776 ASN1_INTEGER_free(serial); 777 serial = NULL; 778 if (!BN_add_word(bn, 1)) 779 goto err; 780 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 781 goto err; 782 } 783 ret = 1; 784 785 err: 786 if (!ret) { 787 ASN1_INTEGER_free(serial); 788 serial = NULL; 789 } 790 BIO_free_all(in); 791 BN_free(bn); 792 return serial; 793 } 794 795 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 796 { 797 int ret = 0; 798 BIO *out = NULL; 799 800 if ((out = BIO_new_file(serialfile, "w")) == NULL) 801 goto err; 802 if (i2a_ASN1_INTEGER(out, serial) <= 0) 803 goto err; 804 if (BIO_puts(out, "\n") <= 0) 805 goto err; 806 ret = 1; 807 err: 808 if (!ret) 809 BIO_printf(bio_err, "could not save serial number to %s\n", 810 serialfile); 811 BIO_free_all(out); 812 return ret; 813 } 814 815 816 /* 817 * Verify-related method definitions. 818 */ 819 820 static int verify_command(const char *data, const char *digest, const char *queryfile, 821 const char *in, int token_in, 822 const char *CApath, const char *CAfile, const char *untrusted, 823 X509_VERIFY_PARAM *vpm) 824 { 825 BIO *in_bio = NULL; 826 PKCS7 *token = NULL; 827 TS_RESP *response = NULL; 828 TS_VERIFY_CTX *verify_ctx = NULL; 829 int ret = 0; 830 831 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 832 goto end; 833 if (token_in) { 834 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 835 goto end; 836 } else { 837 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 838 goto end; 839 } 840 841 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 842 CApath, CAfile, untrusted, 843 vpm)) == NULL) 844 goto end; 845 846 ret = token_in 847 ? TS_RESP_verify_token(verify_ctx, token) 848 : TS_RESP_verify_response(verify_ctx, response); 849 850 end: 851 printf("Verification: "); 852 if (ret) 853 printf("OK\n"); 854 else { 855 printf("FAILED\n"); 856 ERR_print_errors(bio_err); 857 } 858 859 BIO_free_all(in_bio); 860 PKCS7_free(token); 861 TS_RESP_free(response); 862 TS_VERIFY_CTX_free(verify_ctx); 863 return ret; 864 } 865 866 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 867 const char *queryfile, 868 const char *CApath, const char *CAfile, 869 const char *untrusted, 870 X509_VERIFY_PARAM *vpm) 871 { 872 TS_VERIFY_CTX *ctx = NULL; 873 BIO *input = NULL; 874 TS_REQ *request = NULL; 875 int ret = 0; 876 int f = 0; 877 878 if (data != NULL || digest != NULL) { 879 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 880 goto err; 881 f = TS_VFY_VERSION | TS_VFY_SIGNER; 882 if (data != NULL) { 883 BIO *out = NULL; 884 885 f |= TS_VFY_DATA; 886 if ((out = BIO_new_file(data, "rb")) == NULL) 887 goto err; 888 if (TS_VERIFY_CTX_set_data(ctx, out) == NULL) { 889 BIO_free_all(out); 890 goto err; 891 } 892 } else if (digest != NULL) { 893 long imprint_len; 894 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 895 f |= TS_VFY_IMPRINT; 896 if (TS_VERIFY_CTX_set_imprint(ctx, hexstr, imprint_len) == NULL) { 897 BIO_printf(bio_err, "invalid digest string\n"); 898 goto err; 899 } 900 } 901 902 } else if (queryfile != NULL) { 903 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 904 goto err; 905 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 906 goto err; 907 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 908 goto err; 909 } else { 910 return NULL; 911 } 912 913 /* Add the signature verification flag and arguments. */ 914 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 915 916 /* Initialising the X509_STORE object. */ 917 if (TS_VERIFY_CTX_set_store(ctx, create_cert_store(CApath, CAfile, vpm)) 918 == NULL) 919 goto err; 920 921 /* Loading untrusted certificates. */ 922 if (untrusted 923 && TS_VERIFY_CTS_set_certs(ctx, TS_CONF_load_certs(untrusted)) == NULL) 924 goto err; 925 ret = 1; 926 927 err: 928 if (!ret) { 929 TS_VERIFY_CTX_free(ctx); 930 ctx = NULL; 931 } 932 BIO_free_all(input); 933 TS_REQ_free(request); 934 return ctx; 935 } 936 937 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 938 X509_VERIFY_PARAM *vpm) 939 { 940 X509_STORE *cert_ctx = NULL; 941 X509_LOOKUP *lookup = NULL; 942 int i; 943 944 cert_ctx = X509_STORE_new(); 945 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 946 if (CApath != NULL) { 947 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 948 if (lookup == NULL) { 949 BIO_printf(bio_err, "memory allocation failure\n"); 950 goto err; 951 } 952 i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM); 953 if (!i) { 954 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 955 goto err; 956 } 957 } 958 959 if (CAfile != NULL) { 960 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 961 if (lookup == NULL) { 962 BIO_printf(bio_err, "memory allocation failure\n"); 963 goto err; 964 } 965 i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM); 966 if (!i) { 967 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 968 goto err; 969 } 970 } 971 972 if (vpm != NULL) 973 X509_STORE_set1_param(cert_ctx, vpm); 974 975 return cert_ctx; 976 977 err: 978 X509_STORE_free(cert_ctx); 979 return NULL; 980 } 981 982 static int verify_cb(int ok, X509_STORE_CTX *ctx) 983 { 984 return ok; 985 } 986 #endif /* ndef OPENSSL_NO_TS */ 987