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) || (b && !a && !c) || (c && !a && !b)) 32 33 static ASN1_OBJECT *txt2obj(const char *oid); 34 static CONF *load_config_file(const char *configfile); 35 36 /* Query related functions. */ 37 static int query_command(const char *data, const char *digest, 38 const EVP_MD *md, const char *policy, int no_nonce, 39 int cert, const char *in, const char *out, int text); 40 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 41 const char *policy, int no_nonce, int cert); 42 static int create_digest(BIO *input, const char *digest, 43 const EVP_MD *md, unsigned char **md_value); 44 static ASN1_INTEGER *create_nonce(int bits); 45 46 /* Reply related functions. */ 47 static int reply_command(CONF *conf, const char *section, const char *engine, 48 const char *queryfile, const char *passin, const char *inkey, 49 const EVP_MD *md, const char *signer, const char *chain, 50 const char *policy, const char *in, int token_in, 51 const char *out, int token_out, int text); 52 static TS_RESP *read_PKCS7(BIO *in_bio); 53 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 54 const char *queryfile, const char *passin, 55 const char *inkey, const EVP_MD *md, const char *signer, 56 const char *chain, const char *policy); 57 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data); 58 static ASN1_INTEGER *next_serial(const char *serialfile); 59 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); 60 61 /* Verify related functions. */ 62 static int verify_command(const char *data, const char *digest, const char *queryfile, 63 const char *in, int token_in, 64 const char *CApath, const char *CAfile, 65 const char *CAstore, 66 char *untrusted, X509_VERIFY_PARAM *vpm); 67 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 68 const char *queryfile, 69 const char *CApath, const char *CAfile, 70 const char *CAstore, 71 char *untrusted, 72 X509_VERIFY_PARAM *vpm); 73 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 74 const char *CAstore, X509_VERIFY_PARAM *vpm); 75 static int verify_cb(int ok, X509_STORE_CTX *ctx); 76 77 typedef enum OPTION_choice { 78 OPT_COMMON, 79 OPT_ENGINE, 80 OPT_CONFIG, 81 OPT_SECTION, 82 OPT_QUERY, 83 OPT_DATA, 84 OPT_DIGEST, 85 OPT_TSPOLICY, 86 OPT_NO_NONCE, 87 OPT_CERT, 88 OPT_IN, 89 OPT_TOKEN_IN, 90 OPT_OUT, 91 OPT_TOKEN_OUT, 92 OPT_TEXT, 93 OPT_REPLY, 94 OPT_QUERYFILE, 95 OPT_PASSIN, 96 OPT_INKEY, 97 OPT_SIGNER, 98 OPT_CHAIN, 99 OPT_VERIFY, 100 OPT_CAPATH, 101 OPT_CAFILE, 102 OPT_CASTORE, 103 OPT_UNTRUSTED, 104 OPT_MD, 105 OPT_V_ENUM, 106 OPT_R_ENUM, 107 OPT_PROV_ENUM 108 } OPTION_CHOICE; 109 110 const OPTIONS ts_options[] = { 111 OPT_SECTION("General"), 112 { "help", OPT_HELP, '-', "Display this summary" }, 113 { "config", OPT_CONFIG, '<', "Configuration file" }, 114 { "section", OPT_SECTION, 's', "Section to use within config file" }, 115 #ifndef OPENSSL_NO_ENGINE 116 { "engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device" }, 117 #endif 118 { "inkey", OPT_INKEY, 's', "File with private key for reply" }, 119 { "signer", OPT_SIGNER, 's', "Signer certificate file" }, 120 { "chain", OPT_CHAIN, '<', "File with signer CA chain" }, 121 { "CAfile", OPT_CAFILE, '<', "File with trusted CA certs" }, 122 { "CApath", OPT_CAPATH, '/', "Path to trusted CA files" }, 123 { "CAstore", OPT_CASTORE, ':', "URI to trusted CA store" }, 124 { "untrusted", OPT_UNTRUSTED, '<', "Extra untrusted certs" }, 125 { "token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file" }, 126 { "token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file" }, 127 { "passin", OPT_PASSIN, 's', "Input file pass phrase source" }, 128 { "", OPT_MD, '-', "Any supported digest" }, 129 130 OPT_SECTION("Query"), 131 { "query", OPT_QUERY, '-', "Generate a TS query" }, 132 { "data", OPT_DATA, '<', "File to hash" }, 133 { "digest", OPT_DIGEST, 's', "Digest (as a hex string)" }, 134 { "queryfile", OPT_QUERYFILE, '<', "File containing a TS query" }, 135 { "cert", OPT_CERT, '-', "Put cert request into query" }, 136 { "in", OPT_IN, '<', "Input file" }, 137 138 OPT_SECTION("Verify"), 139 { "verify", OPT_VERIFY, '-', "Verify a TS response" }, 140 { "reply", OPT_REPLY, '-', "Generate a TS reply" }, 141 { "tspolicy", OPT_TSPOLICY, 's', "Policy OID to use" }, 142 { "no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce" }, 143 { "out", OPT_OUT, '>', "Output file" }, 144 { "text", OPT_TEXT, '-', "Output text (not DER)" }, 145 146 OPT_R_OPTIONS, 147 OPT_V_OPTIONS, 148 OPT_PROV_OPTIONS, 149 { NULL } 150 }; 151 152 /* 153 * This command is so complex, special help is needed. 154 */ 155 static char *opt_helplist[] = { 156 "", 157 "Typical uses:", 158 " openssl ts -query [-rand file...] [-config file] [-data file]", 159 " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", 160 " [-in file] [-out file] [-text]", 161 "", 162 " openssl ts -reply [-config file] [-section tsa_section]", 163 " [-queryfile file] [-passin password]", 164 " [-signer tsa_cert.pem] [-inkey private_key.pem]", 165 " [-chain certs_file.pem] [-tspolicy oid]", 166 " [-in file] [-token_in] [-out file] [-token_out]", 167 #ifndef OPENSSL_NO_ENGINE 168 " [-text] [-engine id]", 169 #else 170 " [-text]", 171 #endif 172 "", 173 " openssl ts -verify -CApath dir -CAfile root-cert.pem -CAstore uri", 174 " -untrusted extra-certs.pem [-data file] [-digest hexstring]", 175 " [-queryfile request.tsq] -in response.tsr [-token_in] ...", 176 NULL, 177 }; 178 179 int ts_main(int argc, char **argv) 180 { 181 CONF *conf = NULL; 182 const char *CAfile = NULL, *prog; 183 char *untrusted = NULL; 184 const char *configfile = default_config_file, *engine = NULL; 185 const char *section = NULL, *digestname = NULL; 186 char **helpp; 187 char *password = NULL; 188 char *data = NULL, *digest = NULL, *policy = NULL; 189 char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; 190 char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; 191 char *CAstore = NULL; 192 EVP_MD *md = NULL; 193 OPTION_CHOICE o, mode = OPT_ERR; 194 int ret = 1, no_nonce = 0, cert = 0, text = 0; 195 int vpmtouched = 0; 196 X509_VERIFY_PARAM *vpm = NULL; 197 /* Input is ContentInfo instead of TimeStampResp. */ 198 int token_in = 0; 199 /* Output is ContentInfo instead of TimeStampResp. */ 200 int token_out = 0; 201 202 if ((vpm = X509_VERIFY_PARAM_new()) == NULL) 203 goto end; 204 205 opt_set_unknown_name("digest"); 206 prog = opt_init(argc, argv, ts_options); 207 while ((o = opt_next()) != OPT_EOF) { 208 switch (o) { 209 case OPT_EOF: 210 case OPT_ERR: 211 opthelp: 212 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 213 goto end; 214 case OPT_HELP: 215 opt_help(ts_options); 216 for (helpp = opt_helplist; *helpp; ++helpp) 217 BIO_printf(bio_err, "%s\n", *helpp); 218 ret = 0; 219 goto end; 220 case OPT_CONFIG: 221 configfile = opt_arg(); 222 break; 223 case OPT_SECTION: 224 section = opt_arg(); 225 break; 226 case OPT_QUERY: 227 case OPT_REPLY: 228 case OPT_VERIFY: 229 if (mode != OPT_ERR) { 230 BIO_printf(bio_err, "%s: Must give only one of -query, -reply, or -verify\n", prog); 231 goto opthelp; 232 } 233 mode = o; 234 break; 235 case OPT_DATA: 236 data = opt_arg(); 237 break; 238 case OPT_DIGEST: 239 digest = opt_arg(); 240 break; 241 case OPT_R_CASES: 242 if (!opt_rand(o)) 243 goto end; 244 break; 245 case OPT_PROV_CASES: 246 if (!opt_provider(o)) 247 goto end; 248 break; 249 case OPT_TSPOLICY: 250 policy = opt_arg(); 251 break; 252 case OPT_NO_NONCE: 253 no_nonce = 1; 254 break; 255 case OPT_CERT: 256 cert = 1; 257 break; 258 case OPT_IN: 259 in = opt_arg(); 260 break; 261 case OPT_TOKEN_IN: 262 token_in = 1; 263 break; 264 case OPT_OUT: 265 out = opt_arg(); 266 break; 267 case OPT_TOKEN_OUT: 268 token_out = 1; 269 break; 270 case OPT_TEXT: 271 text = 1; 272 break; 273 case OPT_QUERYFILE: 274 queryfile = opt_arg(); 275 break; 276 case OPT_PASSIN: 277 passin = opt_arg(); 278 break; 279 case OPT_INKEY: 280 inkey = opt_arg(); 281 break; 282 case OPT_SIGNER: 283 signer = opt_arg(); 284 break; 285 case OPT_CHAIN: 286 chain = opt_arg(); 287 break; 288 case OPT_CAPATH: 289 CApath = opt_arg(); 290 break; 291 case OPT_CAFILE: 292 CAfile = opt_arg(); 293 break; 294 case OPT_CASTORE: 295 CAstore = opt_arg(); 296 break; 297 case OPT_UNTRUSTED: 298 untrusted = opt_arg(); 299 break; 300 case OPT_ENGINE: 301 engine = opt_arg(); 302 break; 303 case OPT_MD: 304 digestname = opt_unknown(); 305 break; 306 case OPT_V_CASES: 307 if (!opt_verify(o, vpm)) 308 goto end; 309 vpmtouched++; 310 break; 311 } 312 } 313 314 /* No extra arguments. */ 315 if (!opt_check_rest_arg(NULL)) 316 goto opthelp; 317 if (mode == OPT_ERR) { 318 BIO_printf(bio_err, "%s: Must give one of -query, -reply, or -verify\n", prog); 319 goto opthelp; 320 } 321 322 if (!app_RAND_load()) 323 goto end; 324 325 if (!opt_md(digestname, &md)) 326 goto opthelp; 327 if (mode == OPT_REPLY && passin && !app_passwd(passin, NULL, &password, NULL)) { 328 BIO_printf(bio_err, "Error getting password.\n"); 329 goto end; 330 } 331 332 if ((conf = load_config_file(configfile)) == NULL) 333 goto end; 334 if (configfile != default_config_file && !app_load_modules(conf)) 335 goto end; 336 337 /* Check parameter consistency and execute the appropriate function. */ 338 if (mode == OPT_QUERY) { 339 if (vpmtouched) 340 goto opthelp; 341 if ((data != NULL) && (digest != NULL)) 342 goto opthelp; 343 ret = !query_command(data, digest, md, policy, no_nonce, cert, 344 in, out, text); 345 } else if (mode == OPT_REPLY) { 346 if (vpmtouched) 347 goto opthelp; 348 if ((in != NULL) && (queryfile != NULL)) 349 goto opthelp; 350 if (in == NULL) { 351 if ((conf == NULL) || (token_in != 0)) 352 goto opthelp; 353 } 354 ret = !reply_command(conf, section, engine, queryfile, 355 password, inkey, md, signer, chain, policy, 356 in, token_in, out, token_out, text); 357 358 } else if (mode == OPT_VERIFY) { 359 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 360 goto opthelp; 361 ret = !verify_command(data, digest, queryfile, in, token_in, 362 CApath, CAfile, CAstore, untrusted, 363 vpmtouched ? vpm : NULL); 364 } else { 365 goto opthelp; 366 } 367 368 end: 369 X509_VERIFY_PARAM_free(vpm); 370 EVP_MD_free(md); 371 NCONF_free(conf); 372 OPENSSL_free(password); 373 return ret; 374 } 375 376 /* 377 * Configuration file-related function definitions. 378 */ 379 380 static ASN1_OBJECT *txt2obj(const char *oid) 381 { 382 ASN1_OBJECT *oid_obj = NULL; 383 384 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 385 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 386 387 return oid_obj; 388 } 389 390 static CONF *load_config_file(const char *configfile) 391 { 392 CONF *conf = app_load_config(configfile); 393 394 if (conf != NULL) { 395 const char *p; 396 397 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 398 p = app_conf_try_string(conf, NULL, ENV_OID_FILE); 399 if (p != NULL) { 400 BIO *oid_bio = BIO_new_file(p, "r"); 401 if (!oid_bio) 402 ERR_print_errors(bio_err); 403 else { 404 OBJ_create_objects(oid_bio); 405 BIO_free_all(oid_bio); 406 } 407 } 408 if (!add_oid_section(conf)) 409 ERR_print_errors(bio_err); 410 } 411 return conf; 412 } 413 414 /* 415 * Query-related method definitions. 416 */ 417 static int query_command(const char *data, const char *digest, const EVP_MD *md, 418 const char *policy, int no_nonce, 419 int cert, const char *in, const char *out, int text) 420 { 421 int ret = 0; 422 TS_REQ *query = NULL; 423 BIO *in_bio = NULL; 424 BIO *data_bio = NULL; 425 BIO *out_bio = NULL; 426 427 /* Build query object. */ 428 if (in != NULL) { 429 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 430 goto end; 431 query = d2i_TS_REQ_bio(in_bio, NULL); 432 } else { 433 if (digest == NULL 434 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 435 goto end; 436 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 437 } 438 if (query == NULL) 439 goto end; 440 441 if (text) { 442 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 443 goto end; 444 if (!TS_REQ_print_bio(out_bio, query)) 445 goto end; 446 } else { 447 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 448 goto end; 449 if (!i2d_TS_REQ_bio(out_bio, query)) 450 goto end; 451 } 452 453 ret = 1; 454 455 end: 456 ERR_print_errors(bio_err); 457 BIO_free_all(in_bio); 458 BIO_free_all(data_bio); 459 BIO_free_all(out_bio); 460 TS_REQ_free(query); 461 return ret; 462 } 463 464 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 465 const char *policy, int no_nonce, int cert) 466 { 467 int ret = 0; 468 TS_REQ *ts_req = NULL; 469 int len; 470 TS_MSG_IMPRINT *msg_imprint = NULL; 471 X509_ALGOR *algo = NULL; 472 unsigned char *data = NULL; 473 ASN1_OBJECT *policy_obj = NULL; 474 ASN1_INTEGER *nonce_asn1 = NULL; 475 476 if (md == NULL && (md = EVP_get_digestbyname("sha256")) == NULL) 477 goto err; 478 if ((ts_req = TS_REQ_new()) == NULL) 479 goto err; 480 if (!TS_REQ_set_version(ts_req, 1)) 481 goto err; 482 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 483 goto err; 484 if ((algo = X509_ALGOR_new()) == NULL) 485 goto err; 486 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_get_type(md))) == NULL) 487 goto err; 488 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 489 goto err; 490 algo->parameter->type = V_ASN1_NULL; 491 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 492 goto err; 493 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 494 goto err; 495 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 496 goto err; 497 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 498 goto err; 499 if (policy && (policy_obj = txt2obj(policy)) == NULL) 500 goto err; 501 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 502 goto err; 503 504 /* Setting nonce if requested. */ 505 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 506 goto err; 507 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 508 goto err; 509 if (!TS_REQ_set_cert_req(ts_req, cert)) 510 goto err; 511 512 ret = 1; 513 err: 514 if (!ret) { 515 TS_REQ_free(ts_req); 516 ts_req = NULL; 517 BIO_printf(bio_err, "could not create query\n"); 518 ERR_print_errors(bio_err); 519 } 520 TS_MSG_IMPRINT_free(msg_imprint); 521 X509_ALGOR_free(algo); 522 OPENSSL_free(data); 523 ASN1_OBJECT_free(policy_obj); 524 ASN1_INTEGER_free(nonce_asn1); 525 return ts_req; 526 } 527 528 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 529 unsigned char **md_value) 530 { 531 int md_value_len; 532 int rv = 0; 533 EVP_MD_CTX *md_ctx = NULL; 534 535 md_value_len = EVP_MD_get_size(md); 536 if (md_value_len <= 0) 537 return 0; 538 539 if (input != NULL) { 540 unsigned char buffer[4096]; 541 int length; 542 543 md_ctx = EVP_MD_CTX_new(); 544 if (md_ctx == NULL) 545 return 0; 546 *md_value = app_malloc(md_value_len, "digest buffer"); 547 if (!EVP_DigestInit(md_ctx, md)) 548 goto err; 549 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 550 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 551 goto err; 552 } 553 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 554 goto err; 555 md_value_len = EVP_MD_get_size(md); 556 } else { 557 long digest_len; 558 559 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 560 if (*md_value == NULL || md_value_len != digest_len) { 561 BIO_printf(bio_err, "bad digest, %d bytes " 562 "must be specified\n", 563 md_value_len); 564 goto err; 565 } 566 } 567 rv = md_value_len; 568 err: 569 if (rv <= 0) { 570 OPENSSL_free(*md_value); 571 *md_value = NULL; 572 rv = 0; 573 } 574 EVP_MD_CTX_free(md_ctx); 575 return rv; 576 } 577 578 static ASN1_INTEGER *create_nonce(int bits) 579 { 580 unsigned char buf[20]; 581 ASN1_INTEGER *nonce = NULL; 582 int len = (bits - 1) / 8 + 1; 583 int i; 584 585 if (len > (int)sizeof(buf)) 586 goto err; 587 if (RAND_bytes(buf, len) <= 0) 588 goto err; 589 590 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 591 for (i = 0; i < len && !buf[i]; ++i) 592 continue; 593 if ((nonce = ASN1_INTEGER_new()) == NULL) 594 goto err; 595 OPENSSL_free(nonce->data); 596 nonce->length = len - i; 597 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 598 memcpy(nonce->data, buf + i, nonce->length); 599 return nonce; 600 601 err: 602 BIO_printf(bio_err, "could not create nonce\n"); 603 ASN1_INTEGER_free(nonce); 604 return NULL; 605 } 606 607 /* 608 * Reply-related method definitions. 609 */ 610 611 static int reply_command(CONF *conf, const char *section, const char *engine, 612 const char *queryfile, const char *passin, const char *inkey, 613 const EVP_MD *md, const char *signer, const char *chain, 614 const char *policy, const char *in, int token_in, 615 const char *out, int token_out, int text) 616 { 617 int ret = 0; 618 TS_RESP *response = NULL; 619 BIO *in_bio = NULL; 620 BIO *query_bio = NULL; 621 BIO *inkey_bio = NULL; 622 BIO *signer_bio = NULL; 623 BIO *out_bio = NULL; 624 625 if (in != NULL) { 626 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 627 goto end; 628 if (token_in) { 629 response = read_PKCS7(in_bio); 630 } else { 631 response = d2i_TS_RESP_bio(in_bio, NULL); 632 } 633 } else { 634 response = create_response(conf, section, engine, queryfile, 635 passin, inkey, md, signer, chain, policy); 636 if (response != NULL) 637 BIO_printf(bio_err, "Response has been generated.\n"); 638 else 639 BIO_printf(bio_err, "Response is not generated.\n"); 640 } 641 if (response == NULL) 642 goto end; 643 644 /* Write response. */ 645 if (text) { 646 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 647 goto end; 648 if (token_out) { 649 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 650 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 651 goto end; 652 } else { 653 if (!TS_RESP_print_bio(out_bio, response)) 654 goto end; 655 } 656 } else { 657 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 658 goto end; 659 if (token_out) { 660 PKCS7 *token = TS_RESP_get_token(response); 661 if (!i2d_PKCS7_bio(out_bio, token)) 662 goto end; 663 } else { 664 if (!i2d_TS_RESP_bio(out_bio, response)) 665 goto end; 666 } 667 } 668 669 ret = 1; 670 671 end: 672 ERR_print_errors(bio_err); 673 BIO_free_all(in_bio); 674 BIO_free_all(query_bio); 675 BIO_free_all(inkey_bio); 676 BIO_free_all(signer_bio); 677 BIO_free_all(out_bio); 678 TS_RESP_free(response); 679 return ret; 680 } 681 682 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 683 static TS_RESP *read_PKCS7(BIO *in_bio) 684 { 685 int ret = 0; 686 PKCS7 *token = NULL; 687 TS_TST_INFO *tst_info = NULL; 688 TS_RESP *resp = NULL; 689 TS_STATUS_INFO *si = NULL; 690 691 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 692 goto end; 693 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 694 goto end; 695 if ((resp = TS_RESP_new()) == NULL) 696 goto end; 697 if ((si = TS_STATUS_INFO_new()) == NULL) 698 goto end; 699 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 700 goto end; 701 if (!TS_RESP_set_status_info(resp, si)) 702 goto end; 703 TS_RESP_set_tst_info(resp, token, tst_info); 704 token = NULL; /* Ownership is lost. */ 705 tst_info = NULL; /* Ownership is lost. */ 706 ret = 1; 707 708 end: 709 PKCS7_free(token); 710 TS_TST_INFO_free(tst_info); 711 if (!ret) { 712 TS_RESP_free(resp); 713 resp = NULL; 714 } 715 TS_STATUS_INFO_free(si); 716 return resp; 717 } 718 719 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 720 const char *queryfile, const char *passin, 721 const char *inkey, const EVP_MD *md, const char *signer, 722 const char *chain, const char *policy) 723 { 724 int ret = 0; 725 TS_RESP *response = NULL; 726 BIO *query_bio = NULL; 727 TS_RESP_CTX *resp_ctx = NULL; 728 729 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 730 goto end; 731 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 732 goto end; 733 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 734 goto end; 735 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 736 goto end; 737 #ifndef OPENSSL_NO_ENGINE 738 if (!TS_CONF_set_crypto_device(conf, section, engine)) 739 goto end; 740 #endif 741 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 742 goto end; 743 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 744 goto end; 745 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 746 goto end; 747 748 if (md) { 749 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 750 goto end; 751 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 752 goto end; 753 } 754 755 if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) 756 goto end; 757 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 758 goto end; 759 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 760 goto end; 761 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 762 goto end; 763 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 764 goto end; 765 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 766 goto end; 767 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 768 goto end; 769 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 770 goto end; 771 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 772 goto end; 773 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 774 goto end; 775 ret = 1; 776 777 end: 778 if (!ret) { 779 TS_RESP_free(response); 780 response = NULL; 781 } 782 TS_RESP_CTX_free(resp_ctx); 783 BIO_free_all(query_bio); 784 return response; 785 } 786 787 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 788 { 789 const char *serial_file = (const char *)data; 790 ASN1_INTEGER *serial = next_serial(serial_file); 791 792 if (serial == NULL) { 793 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 794 "Error during serial number " 795 "generation."); 796 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 797 } else { 798 save_ts_serial(serial_file, serial); 799 } 800 801 return serial; 802 } 803 804 static ASN1_INTEGER *next_serial(const char *serialfile) 805 { 806 int ret = 0; 807 BIO *in = NULL; 808 ASN1_INTEGER *serial = NULL; 809 BIGNUM *bn = NULL; 810 811 if ((serial = ASN1_INTEGER_new()) == NULL) 812 goto err; 813 814 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 815 ERR_clear_error(); 816 BIO_printf(bio_err, "Warning: could not open file %s for " 817 "reading, using serial number: 1\n", 818 serialfile); 819 if (!ASN1_INTEGER_set(serial, 1)) 820 goto err; 821 } else { 822 char buf[1024]; 823 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 824 BIO_printf(bio_err, "unable to load number from %s\n", 825 serialfile); 826 goto err; 827 } 828 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 829 goto err; 830 ASN1_INTEGER_free(serial); 831 serial = NULL; 832 if (!BN_add_word(bn, 1)) 833 goto err; 834 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 835 goto err; 836 } 837 ret = 1; 838 839 err: 840 if (!ret) { 841 ASN1_INTEGER_free(serial); 842 serial = NULL; 843 } 844 BIO_free_all(in); 845 BN_free(bn); 846 return serial; 847 } 848 849 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 850 { 851 int ret = 0; 852 BIO *out = NULL; 853 854 if ((out = BIO_new_file(serialfile, "w")) == NULL) 855 goto err; 856 if (i2a_ASN1_INTEGER(out, serial) <= 0) 857 goto err; 858 if (BIO_puts(out, "\n") <= 0) 859 goto err; 860 ret = 1; 861 err: 862 if (!ret) 863 BIO_printf(bio_err, "could not save serial number to %s\n", 864 serialfile); 865 BIO_free_all(out); 866 return ret; 867 } 868 869 /* 870 * Verify-related method definitions. 871 */ 872 873 static int verify_command(const char *data, const char *digest, const char *queryfile, 874 const char *in, int token_in, 875 const char *CApath, const char *CAfile, 876 const char *CAstore, char *untrusted, 877 X509_VERIFY_PARAM *vpm) 878 { 879 BIO *in_bio = NULL; 880 PKCS7 *token = NULL; 881 TS_RESP *response = NULL; 882 TS_VERIFY_CTX *verify_ctx = NULL; 883 int ret = 0; 884 885 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 886 goto end; 887 if (token_in) { 888 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 889 goto end; 890 } else { 891 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 892 goto end; 893 } 894 895 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 896 CApath, CAfile, CAstore, untrusted, 897 vpm)) 898 == NULL) 899 goto end; 900 901 ret = token_in 902 ? TS_RESP_verify_token(verify_ctx, token) 903 : TS_RESP_verify_response(verify_ctx, response); 904 905 end: 906 printf("Verification: "); 907 if (ret) 908 printf("OK\n"); 909 else { 910 printf("FAILED\n"); 911 ERR_print_errors(bio_err); 912 } 913 914 BIO_free_all(in_bio); 915 PKCS7_free(token); 916 TS_RESP_free(response); 917 TS_VERIFY_CTX_free(verify_ctx); 918 return ret; 919 } 920 921 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 922 const char *queryfile, 923 const char *CApath, const char *CAfile, 924 const char *CAstore, 925 char *untrusted, 926 X509_VERIFY_PARAM *vpm) 927 { 928 TS_VERIFY_CTX *ctx = NULL; 929 STACK_OF(X509) *certs; 930 BIO *input = NULL; 931 TS_REQ *request = NULL; 932 int ret = 0; 933 int f = 0; 934 935 if (data != NULL || digest != NULL) { 936 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 937 goto err; 938 f = TS_VFY_VERSION | TS_VFY_SIGNER; 939 if (data != NULL) { 940 BIO *out = NULL; 941 942 f |= TS_VFY_DATA; 943 if ((out = BIO_new_file(data, "rb")) == NULL) 944 goto err; 945 if (!TS_VERIFY_CTX_set0_data(ctx, out)) { 946 BIO_free_all(out); 947 goto err; 948 } 949 } else if (digest != NULL) { 950 long imprint_len; 951 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 952 f |= TS_VFY_IMPRINT; 953 if (!TS_VERIFY_CTX_set0_imprint(ctx, hexstr, imprint_len)) { 954 BIO_printf(bio_err, "invalid digest string\n"); 955 goto err; 956 } 957 } 958 959 } else if (queryfile != NULL) { 960 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 961 goto err; 962 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 963 goto err; 964 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 965 goto err; 966 } else { 967 return NULL; 968 } 969 970 /* Add the signature verification flag and arguments. */ 971 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 972 973 /* Initialising the X509_STORE object. */ 974 if (!TS_VERIFY_CTX_set0_store(ctx, create_cert_store(CApath, CAfile, CAstore, vpm))) 975 goto err; 976 977 /* Loading any extra untrusted certificates. */ 978 if (untrusted != NULL) { 979 certs = load_certs_multifile(untrusted, NULL, "extra untrusted certs", 980 vpm); 981 if (certs == NULL || !TS_VERIFY_CTX_set0_certs(ctx, certs)) 982 goto err; 983 } 984 ret = 1; 985 986 err: 987 if (!ret) { 988 TS_VERIFY_CTX_free(ctx); 989 ctx = NULL; 990 } 991 BIO_free_all(input); 992 TS_REQ_free(request); 993 return ctx; 994 } 995 996 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 997 const char *CAstore, X509_VERIFY_PARAM *vpm) 998 { 999 X509_STORE *cert_ctx = NULL; 1000 X509_LOOKUP *lookup = NULL; 1001 OSSL_LIB_CTX *libctx = app_get0_libctx(); 1002 const char *propq = app_get0_propq(); 1003 1004 cert_ctx = X509_STORE_new(); 1005 if (cert_ctx == NULL) { 1006 BIO_printf(bio_err, "memory allocation failure\n"); 1007 return NULL; 1008 } 1009 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 1010 if (CApath != NULL) { 1011 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 1012 if (lookup == NULL) { 1013 BIO_printf(bio_err, "memory allocation failure\n"); 1014 goto err; 1015 } 1016 if (X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM) <= 0) { 1017 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 1018 goto err; 1019 } 1020 } 1021 1022 if (CAfile != NULL) { 1023 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 1024 if (lookup == NULL) { 1025 BIO_printf(bio_err, "memory allocation failure\n"); 1026 goto err; 1027 } 1028 if (X509_LOOKUP_load_file_ex(lookup, CAfile, X509_FILETYPE_PEM, libctx, 1029 propq) 1030 <= 0) { 1031 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 1032 goto err; 1033 } 1034 } 1035 1036 if (CAstore != NULL) { 1037 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_store()); 1038 if (lookup == NULL) { 1039 BIO_printf(bio_err, "memory allocation failure\n"); 1040 goto err; 1041 } 1042 if (X509_LOOKUP_add_store_ex(lookup, CAstore, libctx, propq) <= 0) { 1043 BIO_printf(bio_err, "Error loading store URI %s\n", CAstore); 1044 goto err; 1045 } 1046 } 1047 1048 if (vpm != NULL) 1049 X509_STORE_set1_param(cert_ctx, vpm); 1050 1051 return cert_ctx; 1052 1053 err: 1054 X509_STORE_free(cert_ctx); 1055 return NULL; 1056 } 1057 1058 static int verify_cb(int ok, X509_STORE_CTX *ctx) 1059 { 1060 return ok; 1061 } 1062