1 /* 2 * Copyright 2006-2025 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (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 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include "apps.h" 15 #include "progs.h" 16 #include <openssl/bio.h> 17 #include <openssl/err.h> 18 #include <openssl/pem.h> 19 #include <openssl/rand.h> 20 #include <openssl/ts.h> 21 #include <openssl/bn.h> 22 23 /* Request nonce length, in bits (must be a multiple of 8). */ 24 #define NONCE_LENGTH 64 25 26 /* Name of config entry that defines the OID file. */ 27 #define ENV_OID_FILE "oid_file" 28 29 /* Is |EXACTLY_ONE| of three pointers set? */ 30 #define EXACTLY_ONE(a, b, c) \ 31 (( a && !b && !c) || \ 32 ( b && !a && !c) || \ 33 ( c && !a && !b)) 34 35 static ASN1_OBJECT *txt2obj(const char *oid); 36 static CONF *load_config_file(const char *configfile); 37 38 /* Query related functions. */ 39 static int query_command(const char *data, const char *digest, 40 const EVP_MD *md, const char *policy, int no_nonce, 41 int cert, const char *in, const char *out, int text); 42 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 43 const char *policy, int no_nonce, int cert); 44 static int create_digest(BIO *input, const char *digest, 45 const EVP_MD *md, unsigned char **md_value); 46 static ASN1_INTEGER *create_nonce(int bits); 47 48 /* Reply related functions. */ 49 static int reply_command(CONF *conf, const char *section, const char *engine, 50 const char *queryfile, const char *passin, const char *inkey, 51 const EVP_MD *md, const char *signer, const char *chain, 52 const char *policy, const char *in, int token_in, 53 const char *out, int token_out, int text); 54 static TS_RESP *read_PKCS7(BIO *in_bio); 55 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 56 const char *queryfile, const char *passin, 57 const char *inkey, const EVP_MD *md, const char *signer, 58 const char *chain, const char *policy); 59 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data); 60 static ASN1_INTEGER *next_serial(const char *serialfile); 61 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); 62 63 /* Verify related functions. */ 64 static int verify_command(const char *data, const char *digest, const char *queryfile, 65 const char *in, int token_in, 66 const char *CApath, const char *CAfile, 67 const char *CAstore, 68 char *untrusted, X509_VERIFY_PARAM *vpm); 69 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 70 const char *queryfile, 71 const char *CApath, const char *CAfile, 72 const char *CAstore, 73 char *untrusted, 74 X509_VERIFY_PARAM *vpm); 75 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 76 const char *CAstore, X509_VERIFY_PARAM *vpm); 77 static int verify_cb(int ok, X509_STORE_CTX *ctx); 78 79 typedef enum OPTION_choice { 80 OPT_COMMON, 81 OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, 82 OPT_DIGEST, OPT_TSPOLICY, OPT_NO_NONCE, OPT_CERT, 83 OPT_IN, OPT_TOKEN_IN, OPT_OUT, OPT_TOKEN_OUT, OPT_TEXT, 84 OPT_REPLY, OPT_QUERYFILE, OPT_PASSIN, OPT_INKEY, OPT_SIGNER, 85 OPT_CHAIN, OPT_VERIFY, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE, OPT_UNTRUSTED, 86 OPT_MD, OPT_V_ENUM, OPT_R_ENUM, OPT_PROV_ENUM 87 } OPTION_CHOICE; 88 89 const OPTIONS ts_options[] = { 90 OPT_SECTION("General"), 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 #ifndef OPENSSL_NO_ENGINE 95 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 96 #endif 97 {"inkey", OPT_INKEY, 's', "File with private key for reply"}, 98 {"signer", OPT_SIGNER, 's', "Signer certificate file"}, 99 {"chain", OPT_CHAIN, '<', "File with signer CA chain"}, 100 {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, 101 {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, 102 {"CAstore", OPT_CASTORE, ':', "URI to trusted CA store"}, 103 {"untrusted", OPT_UNTRUSTED, '<', "Extra untrusted certs"}, 104 {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, 105 {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, 106 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 107 {"", OPT_MD, '-', "Any supported digest"}, 108 109 OPT_SECTION("Query"), 110 {"query", OPT_QUERY, '-', "Generate a TS query"}, 111 {"data", OPT_DATA, '<', "File to hash"}, 112 {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, 113 {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, 114 {"cert", OPT_CERT, '-', "Put cert request into query"}, 115 {"in", OPT_IN, '<', "Input file"}, 116 117 OPT_SECTION("Verify"), 118 {"verify", OPT_VERIFY, '-', "Verify a TS response"}, 119 {"reply", OPT_REPLY, '-', "Generate a TS reply"}, 120 {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, 121 {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, 122 {"out", OPT_OUT, '>', "Output file"}, 123 {"text", OPT_TEXT, '-', "Output text (not DER)"}, 124 125 OPT_R_OPTIONS, 126 OPT_V_OPTIONS, 127 OPT_PROV_OPTIONS, 128 {NULL} 129 }; 130 131 /* 132 * This command is so complex, special help is needed. 133 */ 134 static char* opt_helplist[] = { 135 "", 136 "Typical uses:", 137 " openssl ts -query [-rand file...] [-config file] [-data file]", 138 " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", 139 " [-in file] [-out file] [-text]", 140 "", 141 " openssl ts -reply [-config file] [-section tsa_section]", 142 " [-queryfile file] [-passin password]", 143 " [-signer tsa_cert.pem] [-inkey private_key.pem]", 144 " [-chain certs_file.pem] [-tspolicy oid]", 145 " [-in file] [-token_in] [-out file] [-token_out]", 146 #ifndef OPENSSL_NO_ENGINE 147 " [-text] [-engine id]", 148 #else 149 " [-text]", 150 #endif 151 "", 152 " openssl ts -verify -CApath dir -CAfile root-cert.pem -CAstore uri", 153 " -untrusted extra-certs.pem [-data file] [-digest hexstring]", 154 " [-queryfile request.tsq] -in response.tsr [-token_in] ...", 155 NULL, 156 }; 157 158 int ts_main(int argc, char **argv) 159 { 160 CONF *conf = NULL; 161 const char *CAfile = NULL, *prog; 162 char *untrusted = NULL; 163 const char *configfile = default_config_file, *engine = NULL; 164 const char *section = NULL, *digestname = NULL; 165 char **helpp; 166 char *password = NULL; 167 char *data = NULL, *digest = NULL, *policy = NULL; 168 char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; 169 char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; 170 char *CAstore = NULL; 171 EVP_MD *md = NULL; 172 OPTION_CHOICE o, mode = OPT_ERR; 173 int ret = 1, no_nonce = 0, cert = 0, text = 0; 174 int vpmtouched = 0; 175 X509_VERIFY_PARAM *vpm = NULL; 176 /* Input is ContentInfo instead of TimeStampResp. */ 177 int token_in = 0; 178 /* Output is ContentInfo instead of TimeStampResp. */ 179 int token_out = 0; 180 181 if ((vpm = X509_VERIFY_PARAM_new()) == NULL) 182 goto end; 183 184 opt_set_unknown_name("digest"); 185 prog = opt_init(argc, argv, ts_options); 186 while ((o = opt_next()) != OPT_EOF) { 187 switch (o) { 188 case OPT_EOF: 189 case OPT_ERR: 190 opthelp: 191 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 192 goto end; 193 case OPT_HELP: 194 opt_help(ts_options); 195 for (helpp = opt_helplist; *helpp; ++helpp) 196 BIO_printf(bio_err, "%s\n", *helpp); 197 ret = 0; 198 goto end; 199 case OPT_CONFIG: 200 configfile = opt_arg(); 201 break; 202 case OPT_SECTION: 203 section = opt_arg(); 204 break; 205 case OPT_QUERY: 206 case OPT_REPLY: 207 case OPT_VERIFY: 208 if (mode != OPT_ERR) { 209 BIO_printf(bio_err, "%s: Must give only one of -query, -reply, or -verify\n", prog); 210 goto opthelp; 211 } 212 mode = o; 213 break; 214 case OPT_DATA: 215 data = opt_arg(); 216 break; 217 case OPT_DIGEST: 218 digest = opt_arg(); 219 break; 220 case OPT_R_CASES: 221 if (!opt_rand(o)) 222 goto end; 223 break; 224 case OPT_PROV_CASES: 225 if (!opt_provider(o)) 226 goto end; 227 break; 228 case OPT_TSPOLICY: 229 policy = opt_arg(); 230 break; 231 case OPT_NO_NONCE: 232 no_nonce = 1; 233 break; 234 case OPT_CERT: 235 cert = 1; 236 break; 237 case OPT_IN: 238 in = opt_arg(); 239 break; 240 case OPT_TOKEN_IN: 241 token_in = 1; 242 break; 243 case OPT_OUT: 244 out = opt_arg(); 245 break; 246 case OPT_TOKEN_OUT: 247 token_out = 1; 248 break; 249 case OPT_TEXT: 250 text = 1; 251 break; 252 case OPT_QUERYFILE: 253 queryfile = opt_arg(); 254 break; 255 case OPT_PASSIN: 256 passin = opt_arg(); 257 break; 258 case OPT_INKEY: 259 inkey = opt_arg(); 260 break; 261 case OPT_SIGNER: 262 signer = opt_arg(); 263 break; 264 case OPT_CHAIN: 265 chain = opt_arg(); 266 break; 267 case OPT_CAPATH: 268 CApath = opt_arg(); 269 break; 270 case OPT_CAFILE: 271 CAfile = opt_arg(); 272 break; 273 case OPT_CASTORE: 274 CAstore = opt_arg(); 275 break; 276 case OPT_UNTRUSTED: 277 untrusted = opt_arg(); 278 break; 279 case OPT_ENGINE: 280 engine = opt_arg(); 281 break; 282 case OPT_MD: 283 digestname = opt_unknown(); 284 break; 285 case OPT_V_CASES: 286 if (!opt_verify(o, vpm)) 287 goto end; 288 vpmtouched++; 289 break; 290 } 291 } 292 293 /* No extra arguments. */ 294 if (!opt_check_rest_arg(NULL)) 295 goto opthelp; 296 if (mode == OPT_ERR) { 297 BIO_printf(bio_err, "%s: Must give one of -query, -reply, or -verify\n", prog); 298 goto opthelp; 299 } 300 301 if (!app_RAND_load()) 302 goto end; 303 304 if (!opt_md(digestname, &md)) 305 goto opthelp; 306 if (mode == OPT_REPLY && passin && 307 !app_passwd(passin, NULL, &password, NULL)) { 308 BIO_printf(bio_err, "Error getting password.\n"); 309 goto end; 310 } 311 312 if ((conf = load_config_file(configfile)) == NULL) 313 goto end; 314 if (configfile != default_config_file && !app_load_modules(conf)) 315 goto end; 316 317 /* Check parameter consistency and execute the appropriate function. */ 318 if (mode == OPT_QUERY) { 319 if (vpmtouched) 320 goto opthelp; 321 if ((data != NULL) && (digest != NULL)) 322 goto opthelp; 323 ret = !query_command(data, digest, md, policy, no_nonce, cert, 324 in, out, text); 325 } else if (mode == OPT_REPLY) { 326 if (vpmtouched) 327 goto opthelp; 328 if ((in != NULL) && (queryfile != NULL)) 329 goto opthelp; 330 if (in == NULL) { 331 if ((conf == NULL) || (token_in != 0)) 332 goto opthelp; 333 } 334 ret = !reply_command(conf, section, engine, queryfile, 335 password, inkey, md, signer, chain, policy, 336 in, token_in, out, token_out, text); 337 338 } else if (mode == OPT_VERIFY) { 339 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 340 goto opthelp; 341 ret = !verify_command(data, digest, queryfile, in, token_in, 342 CApath, CAfile, CAstore, untrusted, 343 vpmtouched ? vpm : NULL); 344 } else { 345 goto opthelp; 346 } 347 348 end: 349 X509_VERIFY_PARAM_free(vpm); 350 EVP_MD_free(md); 351 NCONF_free(conf); 352 OPENSSL_free(password); 353 return ret; 354 } 355 356 /* 357 * Configuration file-related function definitions. 358 */ 359 360 static ASN1_OBJECT *txt2obj(const char *oid) 361 { 362 ASN1_OBJECT *oid_obj = NULL; 363 364 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 365 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 366 367 return oid_obj; 368 } 369 370 static CONF *load_config_file(const char *configfile) 371 { 372 CONF *conf = app_load_config(configfile); 373 374 if (conf != NULL) { 375 const char *p; 376 377 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 378 p = app_conf_try_string(conf, NULL, ENV_OID_FILE); 379 if (p != NULL) { 380 BIO *oid_bio = BIO_new_file(p, "r"); 381 if (!oid_bio) 382 ERR_print_errors(bio_err); 383 else { 384 OBJ_create_objects(oid_bio); 385 BIO_free_all(oid_bio); 386 } 387 } 388 if (!add_oid_section(conf)) 389 ERR_print_errors(bio_err); 390 } 391 return conf; 392 } 393 394 /* 395 * Query-related method definitions. 396 */ 397 static int query_command(const char *data, const char *digest, const EVP_MD *md, 398 const char *policy, int no_nonce, 399 int cert, const char *in, const char *out, int text) 400 { 401 int ret = 0; 402 TS_REQ *query = NULL; 403 BIO *in_bio = NULL; 404 BIO *data_bio = NULL; 405 BIO *out_bio = NULL; 406 407 /* Build query object. */ 408 if (in != NULL) { 409 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 410 goto end; 411 query = d2i_TS_REQ_bio(in_bio, NULL); 412 } else { 413 if (digest == NULL 414 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 415 goto end; 416 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 417 } 418 if (query == NULL) 419 goto end; 420 421 if (text) { 422 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 423 goto end; 424 if (!TS_REQ_print_bio(out_bio, query)) 425 goto end; 426 } else { 427 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 428 goto end; 429 if (!i2d_TS_REQ_bio(out_bio, query)) 430 goto end; 431 } 432 433 ret = 1; 434 435 end: 436 ERR_print_errors(bio_err); 437 BIO_free_all(in_bio); 438 BIO_free_all(data_bio); 439 BIO_free_all(out_bio); 440 TS_REQ_free(query); 441 return ret; 442 } 443 444 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 445 const char *policy, int no_nonce, int cert) 446 { 447 int ret = 0; 448 TS_REQ *ts_req = NULL; 449 int len; 450 TS_MSG_IMPRINT *msg_imprint = NULL; 451 X509_ALGOR *algo = NULL; 452 unsigned char *data = NULL; 453 ASN1_OBJECT *policy_obj = NULL; 454 ASN1_INTEGER *nonce_asn1 = NULL; 455 456 if (md == NULL && (md = EVP_get_digestbyname("sha256")) == NULL) 457 goto err; 458 if ((ts_req = TS_REQ_new()) == NULL) 459 goto err; 460 if (!TS_REQ_set_version(ts_req, 1)) 461 goto err; 462 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 463 goto err; 464 if ((algo = X509_ALGOR_new()) == NULL) 465 goto err; 466 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_get_type(md))) == NULL) 467 goto err; 468 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 469 goto err; 470 algo->parameter->type = V_ASN1_NULL; 471 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 472 goto err; 473 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 474 goto err; 475 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 476 goto err; 477 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 478 goto err; 479 if (policy && (policy_obj = txt2obj(policy)) == NULL) 480 goto err; 481 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 482 goto err; 483 484 /* Setting nonce if requested. */ 485 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 486 goto err; 487 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 488 goto err; 489 if (!TS_REQ_set_cert_req(ts_req, cert)) 490 goto err; 491 492 ret = 1; 493 err: 494 if (!ret) { 495 TS_REQ_free(ts_req); 496 ts_req = NULL; 497 BIO_printf(bio_err, "could not create query\n"); 498 ERR_print_errors(bio_err); 499 } 500 TS_MSG_IMPRINT_free(msg_imprint); 501 X509_ALGOR_free(algo); 502 OPENSSL_free(data); 503 ASN1_OBJECT_free(policy_obj); 504 ASN1_INTEGER_free(nonce_asn1); 505 return ts_req; 506 } 507 508 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 509 unsigned char **md_value) 510 { 511 int md_value_len; 512 int rv = 0; 513 EVP_MD_CTX *md_ctx = NULL; 514 515 md_value_len = EVP_MD_get_size(md); 516 if (md_value_len <= 0) 517 return 0; 518 519 if (input != NULL) { 520 unsigned char buffer[4096]; 521 int length; 522 523 md_ctx = EVP_MD_CTX_new(); 524 if (md_ctx == NULL) 525 return 0; 526 *md_value = app_malloc(md_value_len, "digest buffer"); 527 if (!EVP_DigestInit(md_ctx, md)) 528 goto err; 529 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 530 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 531 goto err; 532 } 533 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 534 goto err; 535 md_value_len = EVP_MD_get_size(md); 536 } else { 537 long digest_len; 538 539 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 540 if (*md_value == NULL || md_value_len != digest_len) { 541 BIO_printf(bio_err, "bad digest, %d bytes " 542 "must be specified\n", md_value_len); 543 goto err; 544 } 545 } 546 rv = md_value_len; 547 err: 548 if (rv <= 0) { 549 OPENSSL_free(*md_value); 550 *md_value = NULL; 551 rv = 0; 552 } 553 EVP_MD_CTX_free(md_ctx); 554 return rv; 555 } 556 557 static ASN1_INTEGER *create_nonce(int bits) 558 { 559 unsigned char buf[20]; 560 ASN1_INTEGER *nonce = NULL; 561 int len = (bits - 1) / 8 + 1; 562 int i; 563 564 if (len > (int)sizeof(buf)) 565 goto err; 566 if (RAND_bytes(buf, len) <= 0) 567 goto err; 568 569 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 570 for (i = 0; i < len && !buf[i]; ++i) 571 continue; 572 if ((nonce = ASN1_INTEGER_new()) == NULL) 573 goto err; 574 OPENSSL_free(nonce->data); 575 nonce->length = len - i; 576 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 577 memcpy(nonce->data, buf + i, nonce->length); 578 return nonce; 579 580 err: 581 BIO_printf(bio_err, "could not create nonce\n"); 582 ASN1_INTEGER_free(nonce); 583 return NULL; 584 } 585 586 /* 587 * Reply-related method definitions. 588 */ 589 590 static int reply_command(CONF *conf, const char *section, const char *engine, 591 const char *queryfile, const char *passin, const char *inkey, 592 const EVP_MD *md, const char *signer, const char *chain, 593 const char *policy, const char *in, int token_in, 594 const char *out, int token_out, int text) 595 { 596 int ret = 0; 597 TS_RESP *response = NULL; 598 BIO *in_bio = NULL; 599 BIO *query_bio = NULL; 600 BIO *inkey_bio = NULL; 601 BIO *signer_bio = NULL; 602 BIO *out_bio = NULL; 603 604 if (in != NULL) { 605 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 606 goto end; 607 if (token_in) { 608 response = read_PKCS7(in_bio); 609 } else { 610 response = d2i_TS_RESP_bio(in_bio, NULL); 611 } 612 } else { 613 response = create_response(conf, section, engine, queryfile, 614 passin, inkey, md, signer, chain, policy); 615 if (response != NULL) 616 BIO_printf(bio_err, "Response has been generated.\n"); 617 else 618 BIO_printf(bio_err, "Response is not generated.\n"); 619 } 620 if (response == NULL) 621 goto end; 622 623 /* Write response. */ 624 if (text) { 625 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 626 goto end; 627 if (token_out) { 628 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 629 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 630 goto end; 631 } else { 632 if (!TS_RESP_print_bio(out_bio, response)) 633 goto end; 634 } 635 } else { 636 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 637 goto end; 638 if (token_out) { 639 PKCS7 *token = TS_RESP_get_token(response); 640 if (!i2d_PKCS7_bio(out_bio, token)) 641 goto end; 642 } else { 643 if (!i2d_TS_RESP_bio(out_bio, response)) 644 goto end; 645 } 646 } 647 648 ret = 1; 649 650 end: 651 ERR_print_errors(bio_err); 652 BIO_free_all(in_bio); 653 BIO_free_all(query_bio); 654 BIO_free_all(inkey_bio); 655 BIO_free_all(signer_bio); 656 BIO_free_all(out_bio); 657 TS_RESP_free(response); 658 return ret; 659 } 660 661 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 662 static TS_RESP *read_PKCS7(BIO *in_bio) 663 { 664 int ret = 0; 665 PKCS7 *token = NULL; 666 TS_TST_INFO *tst_info = NULL; 667 TS_RESP *resp = NULL; 668 TS_STATUS_INFO *si = NULL; 669 670 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 671 goto end; 672 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 673 goto end; 674 if ((resp = TS_RESP_new()) == NULL) 675 goto end; 676 if ((si = TS_STATUS_INFO_new()) == NULL) 677 goto end; 678 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 679 goto end; 680 if (!TS_RESP_set_status_info(resp, si)) 681 goto end; 682 TS_RESP_set_tst_info(resp, token, tst_info); 683 token = NULL; /* Ownership is lost. */ 684 tst_info = NULL; /* Ownership is lost. */ 685 ret = 1; 686 687 end: 688 PKCS7_free(token); 689 TS_TST_INFO_free(tst_info); 690 if (!ret) { 691 TS_RESP_free(resp); 692 resp = NULL; 693 } 694 TS_STATUS_INFO_free(si); 695 return resp; 696 } 697 698 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 699 const char *queryfile, const char *passin, 700 const char *inkey, const EVP_MD *md, const char *signer, 701 const char *chain, const char *policy) 702 { 703 int ret = 0; 704 TS_RESP *response = NULL; 705 BIO *query_bio = NULL; 706 TS_RESP_CTX *resp_ctx = NULL; 707 708 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 709 goto end; 710 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 711 goto end; 712 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 713 goto end; 714 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 715 goto end; 716 #ifndef OPENSSL_NO_ENGINE 717 if (!TS_CONF_set_crypto_device(conf, section, engine)) 718 goto end; 719 #endif 720 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 721 goto end; 722 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 723 goto end; 724 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 725 goto end; 726 727 if (md) { 728 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 729 goto end; 730 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 731 goto end; 732 } 733 734 if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) 735 goto end; 736 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 737 goto end; 738 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 739 goto end; 740 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 741 goto end; 742 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 743 goto end; 744 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 745 goto end; 746 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 747 goto end; 748 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 749 goto end; 750 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 751 goto end; 752 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 753 goto end; 754 ret = 1; 755 756 end: 757 if (!ret) { 758 TS_RESP_free(response); 759 response = NULL; 760 } 761 TS_RESP_CTX_free(resp_ctx); 762 BIO_free_all(query_bio); 763 return response; 764 } 765 766 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 767 { 768 const char *serial_file = (const char *)data; 769 ASN1_INTEGER *serial = next_serial(serial_file); 770 771 if (serial == NULL) { 772 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 773 "Error during serial number " 774 "generation."); 775 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 776 } else { 777 save_ts_serial(serial_file, serial); 778 } 779 780 return serial; 781 } 782 783 static ASN1_INTEGER *next_serial(const char *serialfile) 784 { 785 int ret = 0; 786 BIO *in = NULL; 787 ASN1_INTEGER *serial = NULL; 788 BIGNUM *bn = NULL; 789 790 if ((serial = ASN1_INTEGER_new()) == NULL) 791 goto err; 792 793 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 794 ERR_clear_error(); 795 BIO_printf(bio_err, "Warning: could not open file %s for " 796 "reading, using serial number: 1\n", serialfile); 797 if (!ASN1_INTEGER_set(serial, 1)) 798 goto err; 799 } else { 800 char buf[1024]; 801 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 802 BIO_printf(bio_err, "unable to load number from %s\n", 803 serialfile); 804 goto err; 805 } 806 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 807 goto err; 808 ASN1_INTEGER_free(serial); 809 serial = NULL; 810 if (!BN_add_word(bn, 1)) 811 goto err; 812 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 813 goto err; 814 } 815 ret = 1; 816 817 err: 818 if (!ret) { 819 ASN1_INTEGER_free(serial); 820 serial = NULL; 821 } 822 BIO_free_all(in); 823 BN_free(bn); 824 return serial; 825 } 826 827 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 828 { 829 int ret = 0; 830 BIO *out = NULL; 831 832 if ((out = BIO_new_file(serialfile, "w")) == NULL) 833 goto err; 834 if (i2a_ASN1_INTEGER(out, serial) <= 0) 835 goto err; 836 if (BIO_puts(out, "\n") <= 0) 837 goto err; 838 ret = 1; 839 err: 840 if (!ret) 841 BIO_printf(bio_err, "could not save serial number to %s\n", 842 serialfile); 843 BIO_free_all(out); 844 return ret; 845 } 846 847 848 /* 849 * Verify-related method definitions. 850 */ 851 852 static int verify_command(const char *data, const char *digest, const char *queryfile, 853 const char *in, int token_in, 854 const char *CApath, const char *CAfile, 855 const char *CAstore, char *untrusted, 856 X509_VERIFY_PARAM *vpm) 857 { 858 BIO *in_bio = NULL; 859 PKCS7 *token = NULL; 860 TS_RESP *response = NULL; 861 TS_VERIFY_CTX *verify_ctx = NULL; 862 int ret = 0; 863 864 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 865 goto end; 866 if (token_in) { 867 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 868 goto end; 869 } else { 870 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 871 goto end; 872 } 873 874 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 875 CApath, CAfile, CAstore, untrusted, 876 vpm)) == NULL) 877 goto end; 878 879 ret = token_in 880 ? TS_RESP_verify_token(verify_ctx, token) 881 : TS_RESP_verify_response(verify_ctx, response); 882 883 end: 884 printf("Verification: "); 885 if (ret) 886 printf("OK\n"); 887 else { 888 printf("FAILED\n"); 889 ERR_print_errors(bio_err); 890 } 891 892 BIO_free_all(in_bio); 893 PKCS7_free(token); 894 TS_RESP_free(response); 895 TS_VERIFY_CTX_free(verify_ctx); 896 return ret; 897 } 898 899 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 900 const char *queryfile, 901 const char *CApath, const char *CAfile, 902 const char *CAstore, 903 char *untrusted, 904 X509_VERIFY_PARAM *vpm) 905 { 906 TS_VERIFY_CTX *ctx = NULL; 907 STACK_OF(X509) *certs; 908 BIO *input = NULL; 909 TS_REQ *request = NULL; 910 int ret = 0; 911 int f = 0; 912 913 if (data != NULL || digest != NULL) { 914 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 915 goto err; 916 f = TS_VFY_VERSION | TS_VFY_SIGNER; 917 if (data != NULL) { 918 BIO *out = NULL; 919 920 f |= TS_VFY_DATA; 921 if ((out = BIO_new_file(data, "rb")) == NULL) 922 goto err; 923 if (!TS_VERIFY_CTX_set0_data(ctx, out)) { 924 BIO_free_all(out); 925 goto err; 926 } 927 } else if (digest != NULL) { 928 long imprint_len; 929 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 930 f |= TS_VFY_IMPRINT; 931 if (!TS_VERIFY_CTX_set0_imprint(ctx, hexstr, imprint_len)) { 932 BIO_printf(bio_err, "invalid digest string\n"); 933 goto err; 934 } 935 } 936 937 } else if (queryfile != NULL) { 938 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 939 goto err; 940 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 941 goto err; 942 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 943 goto err; 944 } else { 945 return NULL; 946 } 947 948 /* Add the signature verification flag and arguments. */ 949 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 950 951 /* Initialising the X509_STORE object. */ 952 if (!TS_VERIFY_CTX_set0_store(ctx, create_cert_store(CApath, CAfile, 953 CAstore, vpm))) 954 goto err; 955 956 /* Loading any extra untrusted certificates. */ 957 if (untrusted != NULL) { 958 certs = load_certs_multifile(untrusted, NULL, "extra untrusted certs", 959 vpm); 960 if (certs == NULL || !TS_VERIFY_CTX_set0_certs(ctx, certs)) 961 goto err; 962 } 963 ret = 1; 964 965 err: 966 if (!ret) { 967 TS_VERIFY_CTX_free(ctx); 968 ctx = NULL; 969 } 970 BIO_free_all(input); 971 TS_REQ_free(request); 972 return ctx; 973 } 974 975 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 976 const char *CAstore, X509_VERIFY_PARAM *vpm) 977 { 978 X509_STORE *cert_ctx = NULL; 979 X509_LOOKUP *lookup = NULL; 980 OSSL_LIB_CTX *libctx = app_get0_libctx(); 981 const char *propq = app_get0_propq(); 982 983 cert_ctx = X509_STORE_new(); 984 if (cert_ctx == NULL) { 985 BIO_printf(bio_err, "memory allocation failure\n"); 986 return NULL; 987 } 988 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 989 if (CApath != NULL) { 990 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 991 if (lookup == NULL) { 992 BIO_printf(bio_err, "memory allocation failure\n"); 993 goto err; 994 } 995 if (X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM) <= 0) { 996 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 997 goto err; 998 } 999 } 1000 1001 if (CAfile != NULL) { 1002 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 1003 if (lookup == NULL) { 1004 BIO_printf(bio_err, "memory allocation failure\n"); 1005 goto err; 1006 } 1007 if (X509_LOOKUP_load_file_ex(lookup, CAfile, X509_FILETYPE_PEM, libctx, 1008 propq) <= 0) { 1009 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 1010 goto err; 1011 } 1012 } 1013 1014 if (CAstore != NULL) { 1015 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_store()); 1016 if (lookup == NULL) { 1017 BIO_printf(bio_err, "memory allocation failure\n"); 1018 goto err; 1019 } 1020 if (X509_LOOKUP_add_store_ex(lookup, CAstore, libctx, propq) <= 0) { 1021 BIO_printf(bio_err, "Error loading store URI %s\n", CAstore); 1022 goto err; 1023 } 1024 } 1025 1026 if (vpm != NULL) 1027 X509_STORE_set1_param(cert_ctx, vpm); 1028 1029 return cert_ctx; 1030 1031 err: 1032 X509_STORE_free(cert_ctx); 1033 return NULL; 1034 } 1035 1036 static int verify_cb(int ok, X509_STORE_CTX *ctx) 1037 { 1038 return ok; 1039 } 1040