1 /* 2 * Copyright 2006-2024 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 prog = opt_init(argc, argv, ts_options); 185 while ((o = opt_next()) != OPT_EOF) { 186 switch (o) { 187 case OPT_EOF: 188 case OPT_ERR: 189 opthelp: 190 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 191 goto end; 192 case OPT_HELP: 193 opt_help(ts_options); 194 for (helpp = opt_helplist; *helpp; ++helpp) 195 BIO_printf(bio_err, "%s\n", *helpp); 196 ret = 0; 197 goto end; 198 case OPT_CONFIG: 199 configfile = opt_arg(); 200 break; 201 case OPT_SECTION: 202 section = opt_arg(); 203 break; 204 case OPT_QUERY: 205 case OPT_REPLY: 206 case OPT_VERIFY: 207 if (mode != OPT_ERR) 208 goto opthelp; 209 mode = o; 210 break; 211 case OPT_DATA: 212 data = opt_arg(); 213 break; 214 case OPT_DIGEST: 215 digest = opt_arg(); 216 break; 217 case OPT_R_CASES: 218 if (!opt_rand(o)) 219 goto end; 220 break; 221 case OPT_PROV_CASES: 222 if (!opt_provider(o)) 223 goto end; 224 break; 225 case OPT_TSPOLICY: 226 policy = opt_arg(); 227 break; 228 case OPT_NO_NONCE: 229 no_nonce = 1; 230 break; 231 case OPT_CERT: 232 cert = 1; 233 break; 234 case OPT_IN: 235 in = opt_arg(); 236 break; 237 case OPT_TOKEN_IN: 238 token_in = 1; 239 break; 240 case OPT_OUT: 241 out = opt_arg(); 242 break; 243 case OPT_TOKEN_OUT: 244 token_out = 1; 245 break; 246 case OPT_TEXT: 247 text = 1; 248 break; 249 case OPT_QUERYFILE: 250 queryfile = opt_arg(); 251 break; 252 case OPT_PASSIN: 253 passin = opt_arg(); 254 break; 255 case OPT_INKEY: 256 inkey = opt_arg(); 257 break; 258 case OPT_SIGNER: 259 signer = opt_arg(); 260 break; 261 case OPT_CHAIN: 262 chain = opt_arg(); 263 break; 264 case OPT_CAPATH: 265 CApath = opt_arg(); 266 break; 267 case OPT_CAFILE: 268 CAfile = opt_arg(); 269 break; 270 case OPT_CASTORE: 271 CAstore = opt_arg(); 272 break; 273 case OPT_UNTRUSTED: 274 untrusted = opt_arg(); 275 break; 276 case OPT_ENGINE: 277 engine = opt_arg(); 278 break; 279 case OPT_MD: 280 digestname = opt_unknown(); 281 break; 282 case OPT_V_CASES: 283 if (!opt_verify(o, vpm)) 284 goto end; 285 vpmtouched++; 286 break; 287 } 288 } 289 290 /* No extra arguments. */ 291 argc = opt_num_rest(); 292 if (argc != 0 || mode == OPT_ERR) 293 goto opthelp; 294 295 if (!app_RAND_load()) 296 goto end; 297 298 if (digestname != NULL) { 299 if (!opt_md(digestname, &md)) 300 goto opthelp; 301 } 302 if (mode == OPT_REPLY && passin && 303 !app_passwd(passin, NULL, &password, NULL)) { 304 BIO_printf(bio_err, "Error getting password.\n"); 305 goto end; 306 } 307 308 if ((conf = load_config_file(configfile)) == NULL) 309 goto end; 310 if (configfile != default_config_file && !app_load_modules(conf)) 311 goto end; 312 313 /* Check parameter consistency and execute the appropriate function. */ 314 if (mode == OPT_QUERY) { 315 if (vpmtouched) 316 goto opthelp; 317 if ((data != NULL) && (digest != NULL)) 318 goto opthelp; 319 ret = !query_command(data, digest, md, policy, no_nonce, cert, 320 in, out, text); 321 } else if (mode == OPT_REPLY) { 322 if (vpmtouched) 323 goto opthelp; 324 if ((in != NULL) && (queryfile != NULL)) 325 goto opthelp; 326 if (in == NULL) { 327 if ((conf == NULL) || (token_in != 0)) 328 goto opthelp; 329 } 330 ret = !reply_command(conf, section, engine, queryfile, 331 password, inkey, md, signer, chain, policy, 332 in, token_in, out, token_out, text); 333 334 } else if (mode == OPT_VERIFY) { 335 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 336 goto opthelp; 337 ret = !verify_command(data, digest, queryfile, in, token_in, 338 CApath, CAfile, CAstore, untrusted, 339 vpmtouched ? vpm : NULL); 340 } else { 341 goto opthelp; 342 } 343 344 end: 345 X509_VERIFY_PARAM_free(vpm); 346 EVP_MD_free(md); 347 NCONF_free(conf); 348 OPENSSL_free(password); 349 return ret; 350 } 351 352 /* 353 * Configuration file-related function definitions. 354 */ 355 356 static ASN1_OBJECT *txt2obj(const char *oid) 357 { 358 ASN1_OBJECT *oid_obj = NULL; 359 360 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 361 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 362 363 return oid_obj; 364 } 365 366 static CONF *load_config_file(const char *configfile) 367 { 368 CONF *conf = app_load_config(configfile); 369 370 if (conf != NULL) { 371 const char *p; 372 373 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 374 p = NCONF_get_string(conf, NULL, ENV_OID_FILE); 375 if (p != NULL) { 376 BIO *oid_bio = BIO_new_file(p, "r"); 377 if (!oid_bio) 378 ERR_print_errors(bio_err); 379 else { 380 OBJ_create_objects(oid_bio); 381 BIO_free_all(oid_bio); 382 } 383 } else 384 ERR_clear_error(); 385 if (!add_oid_section(conf)) 386 ERR_print_errors(bio_err); 387 } 388 return conf; 389 } 390 391 /* 392 * Query-related method definitions. 393 */ 394 static int query_command(const char *data, const char *digest, const EVP_MD *md, 395 const char *policy, int no_nonce, 396 int cert, const char *in, const char *out, int text) 397 { 398 int ret = 0; 399 TS_REQ *query = NULL; 400 BIO *in_bio = NULL; 401 BIO *data_bio = NULL; 402 BIO *out_bio = NULL; 403 404 /* Build query object. */ 405 if (in != NULL) { 406 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 407 goto end; 408 query = d2i_TS_REQ_bio(in_bio, NULL); 409 } else { 410 if (digest == NULL 411 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 412 goto end; 413 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 414 } 415 if (query == NULL) 416 goto end; 417 418 if (text) { 419 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 420 goto end; 421 if (!TS_REQ_print_bio(out_bio, query)) 422 goto end; 423 } else { 424 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 425 goto end; 426 if (!i2d_TS_REQ_bio(out_bio, query)) 427 goto end; 428 } 429 430 ret = 1; 431 432 end: 433 ERR_print_errors(bio_err); 434 BIO_free_all(in_bio); 435 BIO_free_all(data_bio); 436 BIO_free_all(out_bio); 437 TS_REQ_free(query); 438 return ret; 439 } 440 441 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 442 const char *policy, int no_nonce, int cert) 443 { 444 int ret = 0; 445 TS_REQ *ts_req = NULL; 446 int len; 447 TS_MSG_IMPRINT *msg_imprint = NULL; 448 X509_ALGOR *algo = NULL; 449 unsigned char *data = NULL; 450 ASN1_OBJECT *policy_obj = NULL; 451 ASN1_INTEGER *nonce_asn1 = NULL; 452 453 if (md == NULL && (md = EVP_get_digestbyname("sha256")) == NULL) 454 goto err; 455 if ((ts_req = TS_REQ_new()) == NULL) 456 goto err; 457 if (!TS_REQ_set_version(ts_req, 1)) 458 goto err; 459 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 460 goto err; 461 if ((algo = X509_ALGOR_new()) == NULL) 462 goto err; 463 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_get_type(md))) == NULL) 464 goto err; 465 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 466 goto err; 467 algo->parameter->type = V_ASN1_NULL; 468 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 469 goto err; 470 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 471 goto err; 472 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 473 goto err; 474 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 475 goto err; 476 if (policy && (policy_obj = txt2obj(policy)) == NULL) 477 goto err; 478 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 479 goto err; 480 481 /* Setting nonce if requested. */ 482 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 483 goto err; 484 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 485 goto err; 486 if (!TS_REQ_set_cert_req(ts_req, cert)) 487 goto err; 488 489 ret = 1; 490 err: 491 if (!ret) { 492 TS_REQ_free(ts_req); 493 ts_req = NULL; 494 BIO_printf(bio_err, "could not create query\n"); 495 ERR_print_errors(bio_err); 496 } 497 TS_MSG_IMPRINT_free(msg_imprint); 498 X509_ALGOR_free(algo); 499 OPENSSL_free(data); 500 ASN1_OBJECT_free(policy_obj); 501 ASN1_INTEGER_free(nonce_asn1); 502 return ts_req; 503 } 504 505 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 506 unsigned char **md_value) 507 { 508 int md_value_len; 509 int rv = 0; 510 EVP_MD_CTX *md_ctx = NULL; 511 512 md_value_len = EVP_MD_get_size(md); 513 if (md_value_len < 0) 514 return 0; 515 516 if (input != NULL) { 517 unsigned char buffer[4096]; 518 int length; 519 520 md_ctx = EVP_MD_CTX_new(); 521 if (md_ctx == NULL) 522 return 0; 523 *md_value = app_malloc(md_value_len, "digest buffer"); 524 if (!EVP_DigestInit(md_ctx, md)) 525 goto err; 526 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 527 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 528 goto err; 529 } 530 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 531 goto err; 532 md_value_len = EVP_MD_get_size(md); 533 } else { 534 long digest_len; 535 536 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 537 if (*md_value == NULL || md_value_len != digest_len) { 538 BIO_printf(bio_err, "bad digest, %d bytes " 539 "must be specified\n", md_value_len); 540 goto err; 541 } 542 } 543 rv = md_value_len; 544 err: 545 if (rv <= 0) { 546 OPENSSL_free(*md_value); 547 *md_value = NULL; 548 rv = 0; 549 } 550 EVP_MD_CTX_free(md_ctx); 551 return rv; 552 } 553 554 static ASN1_INTEGER *create_nonce(int bits) 555 { 556 unsigned char buf[20]; 557 ASN1_INTEGER *nonce = NULL; 558 int len = (bits - 1) / 8 + 1; 559 int i; 560 561 if (len > (int)sizeof(buf)) 562 goto err; 563 if (RAND_bytes(buf, len) <= 0) 564 goto err; 565 566 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 567 for (i = 0; i < len && !buf[i]; ++i) 568 continue; 569 if ((nonce = ASN1_INTEGER_new()) == NULL) 570 goto err; 571 OPENSSL_free(nonce->data); 572 nonce->length = len - i; 573 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 574 memcpy(nonce->data, buf + i, nonce->length); 575 return nonce; 576 577 err: 578 BIO_printf(bio_err, "could not create nonce\n"); 579 ASN1_INTEGER_free(nonce); 580 return NULL; 581 } 582 583 /* 584 * Reply-related method definitions. 585 */ 586 587 static int reply_command(CONF *conf, const char *section, const char *engine, 588 const char *queryfile, const char *passin, const char *inkey, 589 const EVP_MD *md, const char *signer, const char *chain, 590 const char *policy, const char *in, int token_in, 591 const char *out, int token_out, int text) 592 { 593 int ret = 0; 594 TS_RESP *response = NULL; 595 BIO *in_bio = NULL; 596 BIO *query_bio = NULL; 597 BIO *inkey_bio = NULL; 598 BIO *signer_bio = NULL; 599 BIO *out_bio = NULL; 600 601 if (in != NULL) { 602 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 603 goto end; 604 if (token_in) { 605 response = read_PKCS7(in_bio); 606 } else { 607 response = d2i_TS_RESP_bio(in_bio, NULL); 608 } 609 } else { 610 response = create_response(conf, section, engine, queryfile, 611 passin, inkey, md, signer, chain, policy); 612 if (response != NULL) 613 BIO_printf(bio_err, "Response has been generated.\n"); 614 else 615 BIO_printf(bio_err, "Response is not generated.\n"); 616 } 617 if (response == NULL) 618 goto end; 619 620 /* Write response. */ 621 if (text) { 622 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 623 goto end; 624 if (token_out) { 625 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 626 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 627 goto end; 628 } else { 629 if (!TS_RESP_print_bio(out_bio, response)) 630 goto end; 631 } 632 } else { 633 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 634 goto end; 635 if (token_out) { 636 PKCS7 *token = TS_RESP_get_token(response); 637 if (!i2d_PKCS7_bio(out_bio, token)) 638 goto end; 639 } else { 640 if (!i2d_TS_RESP_bio(out_bio, response)) 641 goto end; 642 } 643 } 644 645 ret = 1; 646 647 end: 648 ERR_print_errors(bio_err); 649 BIO_free_all(in_bio); 650 BIO_free_all(query_bio); 651 BIO_free_all(inkey_bio); 652 BIO_free_all(signer_bio); 653 BIO_free_all(out_bio); 654 TS_RESP_free(response); 655 return ret; 656 } 657 658 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 659 static TS_RESP *read_PKCS7(BIO *in_bio) 660 { 661 int ret = 0; 662 PKCS7 *token = NULL; 663 TS_TST_INFO *tst_info = NULL; 664 TS_RESP *resp = NULL; 665 TS_STATUS_INFO *si = NULL; 666 667 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 668 goto end; 669 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 670 goto end; 671 if ((resp = TS_RESP_new()) == NULL) 672 goto end; 673 if ((si = TS_STATUS_INFO_new()) == NULL) 674 goto end; 675 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 676 goto end; 677 if (!TS_RESP_set_status_info(resp, si)) 678 goto end; 679 TS_RESP_set_tst_info(resp, token, tst_info); 680 token = NULL; /* Ownership is lost. */ 681 tst_info = NULL; /* Ownership is lost. */ 682 ret = 1; 683 684 end: 685 PKCS7_free(token); 686 TS_TST_INFO_free(tst_info); 687 if (!ret) { 688 TS_RESP_free(resp); 689 resp = NULL; 690 } 691 TS_STATUS_INFO_free(si); 692 return resp; 693 } 694 695 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 696 const char *queryfile, const char *passin, 697 const char *inkey, const EVP_MD *md, const char *signer, 698 const char *chain, const char *policy) 699 { 700 int ret = 0; 701 TS_RESP *response = NULL; 702 BIO *query_bio = NULL; 703 TS_RESP_CTX *resp_ctx = NULL; 704 705 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 706 goto end; 707 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 708 goto end; 709 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 710 goto end; 711 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 712 goto end; 713 #ifndef OPENSSL_NO_ENGINE 714 if (!TS_CONF_set_crypto_device(conf, section, engine)) 715 goto end; 716 #endif 717 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 718 goto end; 719 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 720 goto end; 721 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 722 goto end; 723 724 if (md) { 725 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 726 goto end; 727 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 728 goto end; 729 } 730 731 if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) 732 goto end; 733 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 734 goto end; 735 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 736 goto end; 737 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 738 goto end; 739 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 740 goto end; 741 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 742 goto end; 743 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 744 goto end; 745 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 746 goto end; 747 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 748 goto end; 749 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 750 goto end; 751 ret = 1; 752 753 end: 754 if (!ret) { 755 TS_RESP_free(response); 756 response = NULL; 757 } 758 TS_RESP_CTX_free(resp_ctx); 759 BIO_free_all(query_bio); 760 return response; 761 } 762 763 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 764 { 765 const char *serial_file = (const char *)data; 766 ASN1_INTEGER *serial = next_serial(serial_file); 767 768 if (serial == NULL) { 769 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 770 "Error during serial number " 771 "generation."); 772 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 773 } else { 774 save_ts_serial(serial_file, serial); 775 } 776 777 return serial; 778 } 779 780 static ASN1_INTEGER *next_serial(const char *serialfile) 781 { 782 int ret = 0; 783 BIO *in = NULL; 784 ASN1_INTEGER *serial = NULL; 785 BIGNUM *bn = NULL; 786 787 if ((serial = ASN1_INTEGER_new()) == NULL) 788 goto err; 789 790 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 791 ERR_clear_error(); 792 BIO_printf(bio_err, "Warning: could not open file %s for " 793 "reading, using serial number: 1\n", serialfile); 794 if (!ASN1_INTEGER_set(serial, 1)) 795 goto err; 796 } else { 797 char buf[1024]; 798 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 799 BIO_printf(bio_err, "unable to load number from %s\n", 800 serialfile); 801 goto err; 802 } 803 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 804 goto err; 805 ASN1_INTEGER_free(serial); 806 serial = NULL; 807 if (!BN_add_word(bn, 1)) 808 goto err; 809 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 810 goto err; 811 } 812 ret = 1; 813 814 err: 815 if (!ret) { 816 ASN1_INTEGER_free(serial); 817 serial = NULL; 818 } 819 BIO_free_all(in); 820 BN_free(bn); 821 return serial; 822 } 823 824 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 825 { 826 int ret = 0; 827 BIO *out = NULL; 828 829 if ((out = BIO_new_file(serialfile, "w")) == NULL) 830 goto err; 831 if (i2a_ASN1_INTEGER(out, serial) <= 0) 832 goto err; 833 if (BIO_puts(out, "\n") <= 0) 834 goto err; 835 ret = 1; 836 err: 837 if (!ret) 838 BIO_printf(bio_err, "could not save serial number to %s\n", 839 serialfile); 840 BIO_free_all(out); 841 return ret; 842 } 843 844 845 /* 846 * Verify-related method definitions. 847 */ 848 849 static int verify_command(const char *data, const char *digest, const char *queryfile, 850 const char *in, int token_in, 851 const char *CApath, const char *CAfile, 852 const char *CAstore, char *untrusted, 853 X509_VERIFY_PARAM *vpm) 854 { 855 BIO *in_bio = NULL; 856 PKCS7 *token = NULL; 857 TS_RESP *response = NULL; 858 TS_VERIFY_CTX *verify_ctx = NULL; 859 int ret = 0; 860 861 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 862 goto end; 863 if (token_in) { 864 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 865 goto end; 866 } else { 867 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 868 goto end; 869 } 870 871 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 872 CApath, CAfile, CAstore, untrusted, 873 vpm)) == NULL) 874 goto end; 875 876 ret = token_in 877 ? TS_RESP_verify_token(verify_ctx, token) 878 : TS_RESP_verify_response(verify_ctx, response); 879 880 end: 881 printf("Verification: "); 882 if (ret) 883 printf("OK\n"); 884 else { 885 printf("FAILED\n"); 886 ERR_print_errors(bio_err); 887 } 888 889 BIO_free_all(in_bio); 890 PKCS7_free(token); 891 TS_RESP_free(response); 892 TS_VERIFY_CTX_free(verify_ctx); 893 return ret; 894 } 895 896 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 897 const char *queryfile, 898 const char *CApath, const char *CAfile, 899 const char *CAstore, 900 char *untrusted, 901 X509_VERIFY_PARAM *vpm) 902 { 903 TS_VERIFY_CTX *ctx = NULL; 904 STACK_OF(X509) *certs; 905 BIO *input = NULL; 906 TS_REQ *request = NULL; 907 int ret = 0; 908 int f = 0; 909 910 if (data != NULL || digest != NULL) { 911 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 912 goto err; 913 f = TS_VFY_VERSION | TS_VFY_SIGNER; 914 if (data != NULL) { 915 BIO *out = NULL; 916 917 f |= TS_VFY_DATA; 918 if ((out = BIO_new_file(data, "rb")) == NULL) 919 goto err; 920 if (TS_VERIFY_CTX_set_data(ctx, out) == NULL) { 921 BIO_free_all(out); 922 goto err; 923 } 924 } else if (digest != NULL) { 925 long imprint_len; 926 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 927 f |= TS_VFY_IMPRINT; 928 if (TS_VERIFY_CTX_set_imprint(ctx, hexstr, imprint_len) == NULL) { 929 BIO_printf(bio_err, "invalid digest string\n"); 930 goto err; 931 } 932 } 933 934 } else if (queryfile != NULL) { 935 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 936 goto err; 937 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 938 goto err; 939 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 940 goto err; 941 } else { 942 return NULL; 943 } 944 945 /* Add the signature verification flag and arguments. */ 946 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 947 948 /* Initialising the X509_STORE object. */ 949 if (TS_VERIFY_CTX_set_store(ctx, 950 create_cert_store(CApath, CAfile, CAstore, vpm)) 951 == NULL) 952 goto err; 953 954 /* Loading any extra untrusted certificates. */ 955 if (untrusted != NULL) { 956 certs = load_certs_multifile(untrusted, NULL, "extra untrusted certs", 957 vpm); 958 if (certs == NULL || TS_VERIFY_CTX_set_certs(ctx, certs) == NULL) 959 goto err; 960 } 961 ret = 1; 962 963 err: 964 if (!ret) { 965 TS_VERIFY_CTX_free(ctx); 966 ctx = NULL; 967 } 968 BIO_free_all(input); 969 TS_REQ_free(request); 970 return ctx; 971 } 972 973 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 974 const char *CAstore, X509_VERIFY_PARAM *vpm) 975 { 976 X509_STORE *cert_ctx = NULL; 977 X509_LOOKUP *lookup = NULL; 978 OSSL_LIB_CTX *libctx = app_get0_libctx(); 979 const char *propq = app_get0_propq(); 980 981 cert_ctx = X509_STORE_new(); 982 if (cert_ctx == NULL) { 983 BIO_printf(bio_err, "memory allocation failure\n"); 984 return NULL; 985 } 986 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 987 if (CApath != NULL) { 988 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 989 if (lookup == NULL) { 990 BIO_printf(bio_err, "memory allocation failure\n"); 991 goto err; 992 } 993 if (X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM) <= 0) { 994 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 995 goto err; 996 } 997 } 998 999 if (CAfile != NULL) { 1000 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 1001 if (lookup == NULL) { 1002 BIO_printf(bio_err, "memory allocation failure\n"); 1003 goto err; 1004 } 1005 if (X509_LOOKUP_load_file_ex(lookup, CAfile, X509_FILETYPE_PEM, libctx, 1006 propq) <= 0) { 1007 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 1008 goto err; 1009 } 1010 } 1011 1012 if (CAstore != NULL) { 1013 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_store()); 1014 if (lookup == NULL) { 1015 BIO_printf(bio_err, "memory allocation failure\n"); 1016 goto err; 1017 } 1018 if (X509_LOOKUP_load_store_ex(lookup, CAstore, libctx, propq) <= 0) { 1019 BIO_printf(bio_err, "Error loading store URI %s\n", CAstore); 1020 goto err; 1021 } 1022 } 1023 1024 if (vpm != NULL) 1025 X509_STORE_set1_param(cert_ctx, vpm); 1026 1027 return cert_ctx; 1028 1029 err: 1030 X509_STORE_free(cert_ctx); 1031 return NULL; 1032 } 1033 1034 static int verify_cb(int ok, X509_STORE_CTX *ctx) 1035 { 1036 return ok; 1037 } 1038