1 /* 2 * Copyright 2006-2020 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 #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, const char *untrusted, 67 X509_VERIFY_PARAM *vpm); 68 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 69 const char *queryfile, 70 const char *CApath, const char *CAfile, 71 const char *untrusted, 72 X509_VERIFY_PARAM *vpm); 73 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 74 X509_VERIFY_PARAM *vpm); 75 static int verify_cb(int ok, X509_STORE_CTX *ctx); 76 77 typedef enum OPTION_choice { 78 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 79 OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, 80 OPT_DIGEST, OPT_TSPOLICY, OPT_NO_NONCE, OPT_CERT, 81 OPT_IN, OPT_TOKEN_IN, OPT_OUT, OPT_TOKEN_OUT, OPT_TEXT, 82 OPT_REPLY, OPT_QUERYFILE, OPT_PASSIN, OPT_INKEY, OPT_SIGNER, 83 OPT_CHAIN, OPT_VERIFY, OPT_CAPATH, OPT_CAFILE, OPT_UNTRUSTED, 84 OPT_MD, OPT_V_ENUM, OPT_R_ENUM 85 } OPTION_CHOICE; 86 87 const OPTIONS ts_options[] = { 88 {"help", OPT_HELP, '-', "Display this summary"}, 89 {"config", OPT_CONFIG, '<', "Configuration file"}, 90 {"section", OPT_SECTION, 's', "Section to use within config file"}, 91 {"query", OPT_QUERY, '-', "Generate a TS query"}, 92 {"data", OPT_DATA, '<', "File to hash"}, 93 {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, 94 OPT_R_OPTIONS, 95 {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, 96 {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, 97 {"cert", OPT_CERT, '-', "Put cert request into query"}, 98 {"in", OPT_IN, '<', "Input file"}, 99 {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, 100 {"out", OPT_OUT, '>', "Output file"}, 101 {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, 102 {"text", OPT_TEXT, '-', "Output text (not DER)"}, 103 {"reply", OPT_REPLY, '-', "Generate a TS reply"}, 104 {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, 105 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 106 {"inkey", OPT_INKEY, 's', "File with private key for reply"}, 107 {"signer", OPT_SIGNER, 's', "Signer certificate file"}, 108 {"chain", OPT_CHAIN, '<', "File with signer CA chain"}, 109 {"verify", OPT_VERIFY, '-', "Verify a TS response"}, 110 {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, 111 {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, 112 {"untrusted", OPT_UNTRUSTED, '<', "File with untrusted certs"}, 113 {"", OPT_MD, '-', "Any supported digest"}, 114 #ifndef OPENSSL_NO_ENGINE 115 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 116 #endif 117 {OPT_HELP_STR, 1, '-', "\nOptions specific to 'ts -verify': \n"}, 118 OPT_V_OPTIONS, 119 {OPT_HELP_STR, 1, '-', "\n"}, 120 {NULL} 121 }; 122 123 /* 124 * This command is so complex, special help is needed. 125 */ 126 static char* opt_helplist[] = { 127 "Typical uses:", 128 "ts -query [-rand file...] [-config file] [-data file]", 129 " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", 130 " [-in file] [-out file] [-text]", 131 " or", 132 "ts -reply [-config file] [-section tsa_section]", 133 " [-queryfile file] [-passin password]", 134 " [-signer tsa_cert.pem] [-inkey private_key.pem]", 135 " [-chain certs_file.pem] [-tspolicy oid]", 136 " [-in file] [-token_in] [-out file] [-token_out]", 137 #ifndef OPENSSL_NO_ENGINE 138 " [-text] [-engine id]", 139 #else 140 " [-text]", 141 #endif 142 " or", 143 "ts -verify -CApath dir -CAfile file.pem -untrusted file.pem", 144 " [-data file] [-digest hexstring]", 145 " [-queryfile file] -in file [-token_in]", 146 " [[options specific to 'ts -verify']]", 147 NULL, 148 }; 149 150 int ts_main(int argc, char **argv) 151 { 152 CONF *conf = NULL; 153 const char *CAfile = NULL, *untrusted = NULL, *prog; 154 const char *configfile = default_config_file, *engine = NULL; 155 const char *section = NULL; 156 char **helpp; 157 char *password = NULL; 158 char *data = NULL, *digest = NULL, *policy = NULL; 159 char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; 160 char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; 161 const EVP_MD *md = NULL; 162 OPTION_CHOICE o, mode = OPT_ERR; 163 int ret = 1, no_nonce = 0, cert = 0, text = 0; 164 int vpmtouched = 0; 165 X509_VERIFY_PARAM *vpm = NULL; 166 /* Input is ContentInfo instead of TimeStampResp. */ 167 int token_in = 0; 168 /* Output is ContentInfo instead of TimeStampResp. */ 169 int token_out = 0; 170 171 if ((vpm = X509_VERIFY_PARAM_new()) == NULL) 172 goto end; 173 174 prog = opt_init(argc, argv, ts_options); 175 while ((o = opt_next()) != OPT_EOF) { 176 switch (o) { 177 case OPT_EOF: 178 case OPT_ERR: 179 opthelp: 180 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 181 goto end; 182 case OPT_HELP: 183 opt_help(ts_options); 184 for (helpp = opt_helplist; *helpp; ++helpp) 185 BIO_printf(bio_err, "%s\n", *helpp); 186 ret = 0; 187 goto end; 188 case OPT_CONFIG: 189 configfile = opt_arg(); 190 break; 191 case OPT_SECTION: 192 section = opt_arg(); 193 break; 194 case OPT_QUERY: 195 case OPT_REPLY: 196 case OPT_VERIFY: 197 if (mode != OPT_ERR) 198 goto opthelp; 199 mode = o; 200 break; 201 case OPT_DATA: 202 data = opt_arg(); 203 break; 204 case OPT_DIGEST: 205 digest = opt_arg(); 206 break; 207 case OPT_R_CASES: 208 if (!opt_rand(o)) 209 goto end; 210 break; 211 case OPT_TSPOLICY: 212 policy = opt_arg(); 213 break; 214 case OPT_NO_NONCE: 215 no_nonce = 1; 216 break; 217 case OPT_CERT: 218 cert = 1; 219 break; 220 case OPT_IN: 221 in = opt_arg(); 222 break; 223 case OPT_TOKEN_IN: 224 token_in = 1; 225 break; 226 case OPT_OUT: 227 out = opt_arg(); 228 break; 229 case OPT_TOKEN_OUT: 230 token_out = 1; 231 break; 232 case OPT_TEXT: 233 text = 1; 234 break; 235 case OPT_QUERYFILE: 236 queryfile = opt_arg(); 237 break; 238 case OPT_PASSIN: 239 passin = opt_arg(); 240 break; 241 case OPT_INKEY: 242 inkey = opt_arg(); 243 break; 244 case OPT_SIGNER: 245 signer = opt_arg(); 246 break; 247 case OPT_CHAIN: 248 chain = opt_arg(); 249 break; 250 case OPT_CAPATH: 251 CApath = opt_arg(); 252 break; 253 case OPT_CAFILE: 254 CAfile = opt_arg(); 255 break; 256 case OPT_UNTRUSTED: 257 untrusted = opt_arg(); 258 break; 259 case OPT_ENGINE: 260 engine = opt_arg(); 261 break; 262 case OPT_MD: 263 if (!opt_md(opt_unknown(), &md)) 264 goto opthelp; 265 break; 266 case OPT_V_CASES: 267 if (!opt_verify(o, vpm)) 268 goto end; 269 vpmtouched++; 270 break; 271 } 272 } 273 if (mode == OPT_ERR || opt_num_rest() != 0) 274 goto opthelp; 275 276 if (mode == OPT_REPLY && passin && 277 !app_passwd(passin, NULL, &password, NULL)) { 278 BIO_printf(bio_err, "Error getting password.\n"); 279 goto end; 280 } 281 282 if ((conf = load_config_file(configfile)) == NULL) 283 goto end; 284 if (configfile != default_config_file && !app_load_modules(conf)) 285 goto end; 286 287 /* Check parameter consistency and execute the appropriate function. */ 288 if (mode == OPT_QUERY) { 289 if (vpmtouched) 290 goto opthelp; 291 if ((data != NULL) && (digest != NULL)) 292 goto opthelp; 293 ret = !query_command(data, digest, md, policy, no_nonce, cert, 294 in, out, text); 295 } else if (mode == OPT_REPLY) { 296 if (vpmtouched) 297 goto opthelp; 298 if ((in != NULL) && (queryfile != NULL)) 299 goto opthelp; 300 if (in == NULL) { 301 if ((conf == NULL) || (token_in != 0)) 302 goto opthelp; 303 } 304 ret = !reply_command(conf, section, engine, queryfile, 305 password, inkey, md, signer, chain, policy, 306 in, token_in, out, token_out, text); 307 308 } else if (mode == OPT_VERIFY) { 309 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 310 goto opthelp; 311 ret = !verify_command(data, digest, queryfile, in, token_in, 312 CApath, CAfile, untrusted, 313 vpmtouched ? vpm : NULL); 314 } else { 315 goto opthelp; 316 } 317 318 end: 319 X509_VERIFY_PARAM_free(vpm); 320 NCONF_free(conf); 321 OPENSSL_free(password); 322 return ret; 323 } 324 325 /* 326 * Configuration file-related function definitions. 327 */ 328 329 static ASN1_OBJECT *txt2obj(const char *oid) 330 { 331 ASN1_OBJECT *oid_obj = NULL; 332 333 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 334 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 335 336 return oid_obj; 337 } 338 339 static CONF *load_config_file(const char *configfile) 340 { 341 CONF *conf = app_load_config(configfile); 342 343 if (conf != NULL) { 344 const char *p; 345 346 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 347 p = NCONF_get_string(conf, NULL, ENV_OID_FILE); 348 if (p != NULL) { 349 BIO *oid_bio = BIO_new_file(p, "r"); 350 if (!oid_bio) 351 ERR_print_errors(bio_err); 352 else { 353 OBJ_create_objects(oid_bio); 354 BIO_free_all(oid_bio); 355 } 356 } else 357 ERR_clear_error(); 358 if (!add_oid_section(conf)) 359 ERR_print_errors(bio_err); 360 } 361 return conf; 362 } 363 364 /* 365 * Query-related method definitions. 366 */ 367 static int query_command(const char *data, const char *digest, const EVP_MD *md, 368 const char *policy, int no_nonce, 369 int cert, const char *in, const char *out, int text) 370 { 371 int ret = 0; 372 TS_REQ *query = NULL; 373 BIO *in_bio = NULL; 374 BIO *data_bio = NULL; 375 BIO *out_bio = NULL; 376 377 /* Build query object. */ 378 if (in != NULL) { 379 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 380 goto end; 381 query = d2i_TS_REQ_bio(in_bio, NULL); 382 } else { 383 if (digest == NULL 384 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 385 goto end; 386 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 387 } 388 if (query == NULL) 389 goto end; 390 391 if (text) { 392 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 393 goto end; 394 if (!TS_REQ_print_bio(out_bio, query)) 395 goto end; 396 } else { 397 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 398 goto end; 399 if (!i2d_TS_REQ_bio(out_bio, query)) 400 goto end; 401 } 402 403 ret = 1; 404 405 end: 406 ERR_print_errors(bio_err); 407 BIO_free_all(in_bio); 408 BIO_free_all(data_bio); 409 BIO_free_all(out_bio); 410 TS_REQ_free(query); 411 return ret; 412 } 413 414 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 415 const char *policy, int no_nonce, int cert) 416 { 417 int ret = 0; 418 TS_REQ *ts_req = NULL; 419 int len; 420 TS_MSG_IMPRINT *msg_imprint = NULL; 421 X509_ALGOR *algo = NULL; 422 unsigned char *data = NULL; 423 ASN1_OBJECT *policy_obj = NULL; 424 ASN1_INTEGER *nonce_asn1 = NULL; 425 426 if (md == NULL && (md = EVP_get_digestbyname("sha1")) == NULL) 427 goto err; 428 if ((ts_req = TS_REQ_new()) == NULL) 429 goto err; 430 if (!TS_REQ_set_version(ts_req, 1)) 431 goto err; 432 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 433 goto err; 434 if ((algo = X509_ALGOR_new()) == NULL) 435 goto err; 436 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_type(md))) == NULL) 437 goto err; 438 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 439 goto err; 440 algo->parameter->type = V_ASN1_NULL; 441 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 442 goto err; 443 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 444 goto err; 445 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 446 goto err; 447 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 448 goto err; 449 if (policy && (policy_obj = txt2obj(policy)) == NULL) 450 goto err; 451 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 452 goto err; 453 454 /* Setting nonce if requested. */ 455 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 456 goto err; 457 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 458 goto err; 459 if (!TS_REQ_set_cert_req(ts_req, cert)) 460 goto err; 461 462 ret = 1; 463 err: 464 if (!ret) { 465 TS_REQ_free(ts_req); 466 ts_req = NULL; 467 BIO_printf(bio_err, "could not create query\n"); 468 ERR_print_errors(bio_err); 469 } 470 TS_MSG_IMPRINT_free(msg_imprint); 471 X509_ALGOR_free(algo); 472 OPENSSL_free(data); 473 ASN1_OBJECT_free(policy_obj); 474 ASN1_INTEGER_free(nonce_asn1); 475 return ts_req; 476 } 477 478 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 479 unsigned char **md_value) 480 { 481 int md_value_len; 482 int rv = 0; 483 EVP_MD_CTX *md_ctx = NULL; 484 485 md_value_len = EVP_MD_size(md); 486 if (md_value_len < 0) 487 return 0; 488 489 if (input != NULL) { 490 unsigned char buffer[4096]; 491 int length; 492 493 md_ctx = EVP_MD_CTX_new(); 494 if (md_ctx == NULL) 495 return 0; 496 *md_value = app_malloc(md_value_len, "digest buffer"); 497 if (!EVP_DigestInit(md_ctx, md)) 498 goto err; 499 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 500 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 501 goto err; 502 } 503 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 504 goto err; 505 md_value_len = EVP_MD_size(md); 506 } else { 507 long digest_len; 508 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 509 if (!*md_value || md_value_len != digest_len) { 510 OPENSSL_free(*md_value); 511 *md_value = NULL; 512 BIO_printf(bio_err, "bad digest, %d bytes " 513 "must be specified\n", md_value_len); 514 return 0; 515 } 516 } 517 rv = md_value_len; 518 err: 519 EVP_MD_CTX_free(md_ctx); 520 return rv; 521 } 522 523 static ASN1_INTEGER *create_nonce(int bits) 524 { 525 unsigned char buf[20]; 526 ASN1_INTEGER *nonce = NULL; 527 int len = (bits - 1) / 8 + 1; 528 int i; 529 530 if (len > (int)sizeof(buf)) 531 goto err; 532 if (RAND_bytes(buf, len) <= 0) 533 goto err; 534 535 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 536 for (i = 0; i < len && !buf[i]; ++i) 537 continue; 538 if ((nonce = ASN1_INTEGER_new()) == NULL) 539 goto err; 540 OPENSSL_free(nonce->data); 541 nonce->length = len - i; 542 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 543 memcpy(nonce->data, buf + i, nonce->length); 544 return nonce; 545 546 err: 547 BIO_printf(bio_err, "could not create nonce\n"); 548 ASN1_INTEGER_free(nonce); 549 return NULL; 550 } 551 552 /* 553 * Reply-related method definitions. 554 */ 555 556 static int reply_command(CONF *conf, const char *section, const char *engine, 557 const char *queryfile, const char *passin, const char *inkey, 558 const EVP_MD *md, const char *signer, const char *chain, 559 const char *policy, const char *in, int token_in, 560 const char *out, int token_out, int text) 561 { 562 int ret = 0; 563 TS_RESP *response = NULL; 564 BIO *in_bio = NULL; 565 BIO *query_bio = NULL; 566 BIO *inkey_bio = NULL; 567 BIO *signer_bio = NULL; 568 BIO *out_bio = NULL; 569 570 if (in != NULL) { 571 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 572 goto end; 573 if (token_in) { 574 response = read_PKCS7(in_bio); 575 } else { 576 response = d2i_TS_RESP_bio(in_bio, NULL); 577 } 578 } else { 579 response = create_response(conf, section, engine, queryfile, 580 passin, inkey, md, signer, chain, policy); 581 if (response != NULL) 582 BIO_printf(bio_err, "Response has been generated.\n"); 583 else 584 BIO_printf(bio_err, "Response is not generated.\n"); 585 } 586 if (response == NULL) 587 goto end; 588 589 /* Write response. */ 590 if (text) { 591 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 592 goto end; 593 if (token_out) { 594 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 595 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 596 goto end; 597 } else { 598 if (!TS_RESP_print_bio(out_bio, response)) 599 goto end; 600 } 601 } else { 602 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 603 goto end; 604 if (token_out) { 605 PKCS7 *token = TS_RESP_get_token(response); 606 if (!i2d_PKCS7_bio(out_bio, token)) 607 goto end; 608 } else { 609 if (!i2d_TS_RESP_bio(out_bio, response)) 610 goto end; 611 } 612 } 613 614 ret = 1; 615 616 end: 617 ERR_print_errors(bio_err); 618 BIO_free_all(in_bio); 619 BIO_free_all(query_bio); 620 BIO_free_all(inkey_bio); 621 BIO_free_all(signer_bio); 622 BIO_free_all(out_bio); 623 TS_RESP_free(response); 624 return ret; 625 } 626 627 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 628 static TS_RESP *read_PKCS7(BIO *in_bio) 629 { 630 int ret = 0; 631 PKCS7 *token = NULL; 632 TS_TST_INFO *tst_info = NULL; 633 TS_RESP *resp = NULL; 634 TS_STATUS_INFO *si = NULL; 635 636 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 637 goto end; 638 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 639 goto end; 640 if ((resp = TS_RESP_new()) == NULL) 641 goto end; 642 if ((si = TS_STATUS_INFO_new()) == NULL) 643 goto end; 644 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 645 goto end; 646 if (!TS_RESP_set_status_info(resp, si)) 647 goto end; 648 TS_RESP_set_tst_info(resp, token, tst_info); 649 token = NULL; /* Ownership is lost. */ 650 tst_info = NULL; /* Ownership is lost. */ 651 ret = 1; 652 653 end: 654 PKCS7_free(token); 655 TS_TST_INFO_free(tst_info); 656 if (!ret) { 657 TS_RESP_free(resp); 658 resp = NULL; 659 } 660 TS_STATUS_INFO_free(si); 661 return resp; 662 } 663 664 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 665 const char *queryfile, const char *passin, 666 const char *inkey, const EVP_MD *md, const char *signer, 667 const char *chain, const char *policy) 668 { 669 int ret = 0; 670 TS_RESP *response = NULL; 671 BIO *query_bio = NULL; 672 TS_RESP_CTX *resp_ctx = NULL; 673 674 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 675 goto end; 676 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 677 goto end; 678 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 679 goto end; 680 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 681 goto end; 682 #ifndef OPENSSL_NO_ENGINE 683 if (!TS_CONF_set_crypto_device(conf, section, engine)) 684 goto end; 685 #endif 686 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 687 goto end; 688 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 689 goto end; 690 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 691 goto end; 692 693 if (md) { 694 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 695 goto end; 696 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 697 goto end; 698 } 699 700 if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) 701 goto end; 702 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 703 goto end; 704 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 705 goto end; 706 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 707 goto end; 708 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 709 goto end; 710 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 711 goto end; 712 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 713 goto end; 714 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 715 goto end; 716 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 717 goto end; 718 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 719 goto end; 720 ret = 1; 721 722 end: 723 if (!ret) { 724 TS_RESP_free(response); 725 response = NULL; 726 } 727 TS_RESP_CTX_free(resp_ctx); 728 BIO_free_all(query_bio); 729 return response; 730 } 731 732 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 733 { 734 const char *serial_file = (const char *)data; 735 ASN1_INTEGER *serial = next_serial(serial_file); 736 737 if (serial == NULL) { 738 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 739 "Error during serial number " 740 "generation."); 741 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 742 } else { 743 save_ts_serial(serial_file, serial); 744 } 745 746 return serial; 747 } 748 749 static ASN1_INTEGER *next_serial(const char *serialfile) 750 { 751 int ret = 0; 752 BIO *in = NULL; 753 ASN1_INTEGER *serial = NULL; 754 BIGNUM *bn = NULL; 755 756 if ((serial = ASN1_INTEGER_new()) == NULL) 757 goto err; 758 759 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 760 ERR_clear_error(); 761 BIO_printf(bio_err, "Warning: could not open file %s for " 762 "reading, using serial number: 1\n", serialfile); 763 if (!ASN1_INTEGER_set(serial, 1)) 764 goto err; 765 } else { 766 char buf[1024]; 767 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 768 BIO_printf(bio_err, "unable to load number from %s\n", 769 serialfile); 770 goto err; 771 } 772 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 773 goto err; 774 ASN1_INTEGER_free(serial); 775 serial = NULL; 776 if (!BN_add_word(bn, 1)) 777 goto err; 778 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 779 goto err; 780 } 781 ret = 1; 782 783 err: 784 if (!ret) { 785 ASN1_INTEGER_free(serial); 786 serial = NULL; 787 } 788 BIO_free_all(in); 789 BN_free(bn); 790 return serial; 791 } 792 793 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 794 { 795 int ret = 0; 796 BIO *out = NULL; 797 798 if ((out = BIO_new_file(serialfile, "w")) == NULL) 799 goto err; 800 if (i2a_ASN1_INTEGER(out, serial) <= 0) 801 goto err; 802 if (BIO_puts(out, "\n") <= 0) 803 goto err; 804 ret = 1; 805 err: 806 if (!ret) 807 BIO_printf(bio_err, "could not save serial number to %s\n", 808 serialfile); 809 BIO_free_all(out); 810 return ret; 811 } 812 813 814 /* 815 * Verify-related method definitions. 816 */ 817 818 static int verify_command(const char *data, const char *digest, const char *queryfile, 819 const char *in, int token_in, 820 const char *CApath, const char *CAfile, const char *untrusted, 821 X509_VERIFY_PARAM *vpm) 822 { 823 BIO *in_bio = NULL; 824 PKCS7 *token = NULL; 825 TS_RESP *response = NULL; 826 TS_VERIFY_CTX *verify_ctx = NULL; 827 int ret = 0; 828 829 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 830 goto end; 831 if (token_in) { 832 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 833 goto end; 834 } else { 835 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 836 goto end; 837 } 838 839 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 840 CApath, CAfile, untrusted, 841 vpm)) == NULL) 842 goto end; 843 844 ret = token_in 845 ? TS_RESP_verify_token(verify_ctx, token) 846 : TS_RESP_verify_response(verify_ctx, response); 847 848 end: 849 printf("Verification: "); 850 if (ret) 851 printf("OK\n"); 852 else { 853 printf("FAILED\n"); 854 ERR_print_errors(bio_err); 855 } 856 857 BIO_free_all(in_bio); 858 PKCS7_free(token); 859 TS_RESP_free(response); 860 TS_VERIFY_CTX_free(verify_ctx); 861 return ret; 862 } 863 864 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 865 const char *queryfile, 866 const char *CApath, const char *CAfile, 867 const char *untrusted, 868 X509_VERIFY_PARAM *vpm) 869 { 870 TS_VERIFY_CTX *ctx = NULL; 871 BIO *input = NULL; 872 TS_REQ *request = NULL; 873 int ret = 0; 874 int f = 0; 875 876 if (data != NULL || digest != NULL) { 877 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 878 goto err; 879 f = TS_VFY_VERSION | TS_VFY_SIGNER; 880 if (data != NULL) { 881 BIO *out = NULL; 882 883 f |= TS_VFY_DATA; 884 if ((out = BIO_new_file(data, "rb")) == NULL) 885 goto err; 886 if (TS_VERIFY_CTX_set_data(ctx, out) == NULL) { 887 BIO_free_all(out); 888 goto err; 889 } 890 } else if (digest != NULL) { 891 long imprint_len; 892 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 893 f |= TS_VFY_IMPRINT; 894 if (TS_VERIFY_CTX_set_imprint(ctx, hexstr, imprint_len) == NULL) { 895 BIO_printf(bio_err, "invalid digest string\n"); 896 goto err; 897 } 898 } 899 900 } else if (queryfile != NULL) { 901 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 902 goto err; 903 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 904 goto err; 905 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 906 goto err; 907 } else { 908 return NULL; 909 } 910 911 /* Add the signature verification flag and arguments. */ 912 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 913 914 /* Initialising the X509_STORE object. */ 915 if (TS_VERIFY_CTX_set_store(ctx, create_cert_store(CApath, CAfile, vpm)) 916 == NULL) 917 goto err; 918 919 /* Loading untrusted certificates. */ 920 if (untrusted 921 && TS_VERIFY_CTS_set_certs(ctx, TS_CONF_load_certs(untrusted)) == NULL) 922 goto err; 923 ret = 1; 924 925 err: 926 if (!ret) { 927 TS_VERIFY_CTX_free(ctx); 928 ctx = NULL; 929 } 930 BIO_free_all(input); 931 TS_REQ_free(request); 932 return ctx; 933 } 934 935 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 936 X509_VERIFY_PARAM *vpm) 937 { 938 X509_STORE *cert_ctx = NULL; 939 X509_LOOKUP *lookup = NULL; 940 int i; 941 942 cert_ctx = X509_STORE_new(); 943 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 944 if (CApath != NULL) { 945 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 946 if (lookup == NULL) { 947 BIO_printf(bio_err, "memory allocation failure\n"); 948 goto err; 949 } 950 i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM); 951 if (!i) { 952 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 953 goto err; 954 } 955 } 956 957 if (CAfile != NULL) { 958 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 959 if (lookup == NULL) { 960 BIO_printf(bio_err, "memory allocation failure\n"); 961 goto err; 962 } 963 i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM); 964 if (!i) { 965 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 966 goto err; 967 } 968 } 969 970 if (vpm != NULL) 971 X509_STORE_set1_param(cert_ctx, vpm); 972 973 return cert_ctx; 974 975 err: 976 X509_STORE_free(cert_ctx); 977 return NULL; 978 } 979 980 static int verify_cb(int ok, X509_STORE_CTX *ctx) 981 { 982 return ok; 983 } 984