1 /* 2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <openssl/opensslconf.h> 11 #ifdef OPENSSL_NO_TS 12 NON_EMPTY_TRANSLATION_UNIT 13 #else 14 # include <stdio.h> 15 # include <stdlib.h> 16 # include <string.h> 17 # include "apps.h" 18 # include <openssl/bio.h> 19 # include <openssl/err.h> 20 # include <openssl/pem.h> 21 # include <openssl/rand.h> 22 # include <openssl/ts.h> 23 # include <openssl/bn.h> 24 25 /* Request nonce length, in bits (must be a multiple of 8). */ 26 # define NONCE_LENGTH 64 27 28 /* Name of config entry that defines the OID file. */ 29 # define ENV_OID_FILE "oid_file" 30 31 /* Is |EXACTLY_ONE| of three pointers set? */ 32 # define EXACTLY_ONE(a, b, c) \ 33 (( a && !b && !c) || \ 34 ( b && !a && !c) || \ 35 ( c && !a && !b)) 36 37 static ASN1_OBJECT *txt2obj(const char *oid); 38 static CONF *load_config_file(const char *configfile); 39 40 /* Query related functions. */ 41 static int query_command(const char *data, const char *digest, 42 const EVP_MD *md, const char *policy, int no_nonce, 43 int cert, const char *in, const char *out, int text); 44 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 45 const char *policy, int no_nonce, int cert); 46 static int create_digest(BIO *input, const char *digest, 47 const EVP_MD *md, unsigned char **md_value); 48 static ASN1_INTEGER *create_nonce(int bits); 49 50 /* Reply related functions. */ 51 static int reply_command(CONF *conf, const char *section, const char *engine, 52 const char *queryfile, const char *passin, const char *inkey, 53 const EVP_MD *md, const char *signer, const char *chain, 54 const char *policy, const char *in, int token_in, 55 const char *out, int token_out, int text); 56 static TS_RESP *read_PKCS7(BIO *in_bio); 57 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 58 const char *queryfile, const char *passin, 59 const char *inkey, const EVP_MD *md, const char *signer, 60 const char *chain, const char *policy); 61 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data); 62 static ASN1_INTEGER *next_serial(const char *serialfile); 63 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); 64 65 /* Verify related functions. */ 66 static int verify_command(const char *data, const char *digest, const char *queryfile, 67 const char *in, int token_in, 68 const char *CApath, const char *CAfile, const char *untrusted, 69 X509_VERIFY_PARAM *vpm); 70 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 71 const char *queryfile, 72 const char *CApath, const char *CAfile, 73 const char *untrusted, 74 X509_VERIFY_PARAM *vpm); 75 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 76 X509_VERIFY_PARAM *vpm); 77 static int verify_cb(int ok, X509_STORE_CTX *ctx); 78 79 typedef enum OPTION_choice { 80 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 81 OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, 82 OPT_DIGEST, OPT_RAND, 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_UNTRUSTED, 86 OPT_MD, OPT_V_ENUM 87 } OPTION_CHOICE; 88 89 OPTIONS ts_options[] = { 90 {"help", OPT_HELP, '-', "Display this summary"}, 91 {"config", OPT_CONFIG, '<', "Configuration file"}, 92 {"section", OPT_SECTION, 's', "Section to use within config file"}, 93 {"query", OPT_QUERY, '-', "Generate a TS query"}, 94 {"data", OPT_DATA, '<', "File to hash"}, 95 {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, 96 {"rand", OPT_RAND, 's', 97 "Load the file(s) into the random number generator"}, 98 {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, 99 {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, 100 {"cert", OPT_CERT, '-', "Put cert request into query"}, 101 {"in", OPT_IN, '<', "Input file"}, 102 {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, 103 {"out", OPT_OUT, '>', "Output file"}, 104 {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, 105 {"text", OPT_TEXT, '-', "Output text (not DER)"}, 106 {"reply", OPT_REPLY, '-', "Generate a TS reply"}, 107 {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, 108 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 109 {"inkey", OPT_INKEY, 's', "File with private key for reply"}, 110 {"signer", OPT_SIGNER, 's', "Signer certificate file"}, 111 {"chain", OPT_CHAIN, '<', "File with signer CA chain"}, 112 {"verify", OPT_VERIFY, '-', "Verify a TS response"}, 113 {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, 114 {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, 115 {"untrusted", OPT_UNTRUSTED, '<', "File with untrusted certs"}, 116 {"", OPT_MD, '-', "Any supported digest"}, 117 # ifndef OPENSSL_NO_ENGINE 118 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 119 # endif 120 {OPT_HELP_STR, 1, '-', "\nOptions specific to 'ts -verify': \n"}, 121 OPT_V_OPTIONS, 122 {OPT_HELP_STR, 1, '-', "\n"}, 123 {NULL} 124 }; 125 126 /* 127 * This command is so complex, special help is needed. 128 */ 129 static char* opt_helplist[] = { 130 "Typical uses:", 131 "ts -query [-rand file...] [-config file] [-data file]", 132 " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", 133 " [-in file] [-out file] [-text]", 134 " or", 135 "ts -reply [-config file] [-section tsa_section]", 136 " [-queryfile file] [-passin password]", 137 " [-signer tsa_cert.pem] [-inkey private_key.pem]", 138 " [-chain certs_file.pem] [-tspolicy oid]", 139 " [-in file] [-token_in] [-out file] [-token_out]", 140 # ifndef OPENSSL_NO_ENGINE 141 " [-text] [-engine id]", 142 # else 143 " [-text]", 144 # endif 145 " or", 146 "ts -verify -CApath dir -CAfile file.pem -untrusted file.pem", 147 " [-data file] [-digest hexstring]", 148 " [-queryfile file] -in file [-token_in]", 149 " [[options specific to 'ts -verify']]", 150 NULL, 151 }; 152 153 int ts_main(int argc, char **argv) 154 { 155 CONF *conf = NULL; 156 const char *CAfile = NULL, *untrusted = NULL, *prog; 157 const char *configfile = default_config_file, *engine = NULL; 158 const char *section = NULL; 159 char **helpp; 160 char *password = NULL; 161 char *data = NULL, *digest = NULL, *rnd = NULL, *policy = NULL; 162 char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; 163 char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; 164 const EVP_MD *md = NULL; 165 OPTION_CHOICE o, mode = OPT_ERR; 166 int ret = 1, no_nonce = 0, cert = 0, text = 0; 167 int vpmtouched = 0; 168 X509_VERIFY_PARAM *vpm = NULL; 169 /* Input is ContentInfo instead of TimeStampResp. */ 170 int token_in = 0; 171 /* Output is ContentInfo instead of TimeStampResp. */ 172 int token_out = 0; 173 174 if ((vpm = X509_VERIFY_PARAM_new()) == NULL) 175 goto end; 176 177 prog = opt_init(argc, argv, ts_options); 178 while ((o = opt_next()) != OPT_EOF) { 179 switch (o) { 180 case OPT_EOF: 181 case OPT_ERR: 182 opthelp: 183 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 184 goto end; 185 case OPT_HELP: 186 opt_help(ts_options); 187 for (helpp = opt_helplist; *helpp; ++helpp) 188 BIO_printf(bio_err, "%s\n", *helpp); 189 ret = 0; 190 goto end; 191 case OPT_CONFIG: 192 configfile = opt_arg(); 193 break; 194 case OPT_SECTION: 195 section = opt_arg(); 196 break; 197 case OPT_QUERY: 198 case OPT_REPLY: 199 case OPT_VERIFY: 200 if (mode != OPT_ERR) 201 goto opthelp; 202 mode = o; 203 break; 204 case OPT_DATA: 205 data = opt_arg(); 206 break; 207 case OPT_DIGEST: 208 digest = opt_arg(); 209 break; 210 case OPT_RAND: 211 rnd = opt_arg(); 212 break; 213 case OPT_TSPOLICY: 214 policy = opt_arg(); 215 break; 216 case OPT_NO_NONCE: 217 no_nonce = 1; 218 break; 219 case OPT_CERT: 220 cert = 1; 221 break; 222 case OPT_IN: 223 in = opt_arg(); 224 break; 225 case OPT_TOKEN_IN: 226 token_in = 1; 227 break; 228 case OPT_OUT: 229 out = opt_arg(); 230 break; 231 case OPT_TOKEN_OUT: 232 token_out = 1; 233 break; 234 case OPT_TEXT: 235 text = 1; 236 break; 237 case OPT_QUERYFILE: 238 queryfile = opt_arg(); 239 break; 240 case OPT_PASSIN: 241 passin = opt_arg(); 242 break; 243 case OPT_INKEY: 244 inkey = opt_arg(); 245 break; 246 case OPT_SIGNER: 247 signer = opt_arg(); 248 break; 249 case OPT_CHAIN: 250 chain = opt_arg(); 251 break; 252 case OPT_CAPATH: 253 CApath = opt_arg(); 254 break; 255 case OPT_CAFILE: 256 CAfile = opt_arg(); 257 break; 258 case OPT_UNTRUSTED: 259 untrusted = opt_arg(); 260 break; 261 case OPT_ENGINE: 262 engine = opt_arg(); 263 break; 264 case OPT_MD: 265 if (!opt_md(opt_unknown(), &md)) 266 goto opthelp; 267 break; 268 case OPT_V_CASES: 269 if (!opt_verify(o, vpm)) 270 goto end; 271 vpmtouched++; 272 break; 273 } 274 } 275 if (mode == OPT_ERR || opt_num_rest() != 0) 276 goto opthelp; 277 278 /* Seed the random number generator if it is going to be used. */ 279 if (mode == OPT_QUERY && !no_nonce) { 280 if (!app_RAND_load_file(NULL, 1) && rnd == NULL) 281 BIO_printf(bio_err, "warning, not much extra random " 282 "data, consider using the -rand option\n"); 283 if (rnd != NULL) 284 BIO_printf(bio_err, "%ld semi-random bytes loaded\n", 285 app_RAND_load_files(rnd)); 286 } 287 288 if (mode == OPT_REPLY && passin && 289 !app_passwd(passin, NULL, &password, NULL)) { 290 BIO_printf(bio_err, "Error getting password.\n"); 291 goto end; 292 } 293 294 conf = load_config_file(configfile); 295 if (configfile != default_config_file && !app_load_modules(conf)) 296 goto end; 297 298 /* Check parameter consistency and execute the appropriate function. */ 299 switch (mode) { 300 default: 301 case OPT_ERR: 302 goto opthelp; 303 case OPT_QUERY: 304 if (vpmtouched) 305 goto opthelp; 306 if ((data != NULL) && (digest != NULL)) 307 goto opthelp; 308 ret = !query_command(data, digest, md, policy, no_nonce, cert, 309 in, out, text); 310 break; 311 case OPT_REPLY: 312 if (vpmtouched) 313 goto opthelp; 314 if ((in != NULL) && (queryfile != NULL)) 315 goto opthelp; 316 if (in == NULL) { 317 if ((conf == NULL) || (token_in != 0)) 318 goto opthelp; 319 } 320 ret = !reply_command(conf, section, engine, queryfile, 321 password, inkey, md, signer, chain, policy, 322 in, token_in, out, token_out, text); 323 break; 324 case OPT_VERIFY: 325 if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) 326 goto opthelp; 327 ret = !verify_command(data, digest, queryfile, in, token_in, 328 CApath, CAfile, untrusted, 329 vpmtouched ? vpm : NULL); 330 } 331 332 end: 333 X509_VERIFY_PARAM_free(vpm); 334 app_RAND_write_file(NULL); 335 NCONF_free(conf); 336 OPENSSL_free(password); 337 return (ret); 338 } 339 340 /* 341 * Configuration file-related function definitions. 342 */ 343 344 static ASN1_OBJECT *txt2obj(const char *oid) 345 { 346 ASN1_OBJECT *oid_obj = NULL; 347 348 if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) 349 BIO_printf(bio_err, "cannot convert %s to OID\n", oid); 350 351 return oid_obj; 352 } 353 354 static CONF *load_config_file(const char *configfile) 355 { 356 CONF *conf = app_load_config(configfile); 357 358 if (conf != NULL) { 359 const char *p; 360 361 BIO_printf(bio_err, "Using configuration from %s\n", configfile); 362 p = NCONF_get_string(conf, NULL, ENV_OID_FILE); 363 if (p != NULL) { 364 BIO *oid_bio = BIO_new_file(p, "r"); 365 if (!oid_bio) 366 ERR_print_errors(bio_err); 367 else { 368 OBJ_create_objects(oid_bio); 369 BIO_free_all(oid_bio); 370 } 371 } else 372 ERR_clear_error(); 373 if (!add_oid_section(conf)) 374 ERR_print_errors(bio_err); 375 } 376 return conf; 377 } 378 379 /* 380 * Query-related method definitions. 381 */ 382 static int query_command(const char *data, const char *digest, const EVP_MD *md, 383 const char *policy, int no_nonce, 384 int cert, const char *in, const char *out, int text) 385 { 386 int ret = 0; 387 TS_REQ *query = NULL; 388 BIO *in_bio = NULL; 389 BIO *data_bio = NULL; 390 BIO *out_bio = NULL; 391 392 /* Build query object. */ 393 if (in != NULL) { 394 if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) 395 goto end; 396 query = d2i_TS_REQ_bio(in_bio, NULL); 397 } else { 398 if (digest == NULL 399 && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) 400 goto end; 401 query = create_query(data_bio, digest, md, policy, no_nonce, cert); 402 } 403 if (query == NULL) 404 goto end; 405 406 if (text) { 407 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 408 goto end; 409 if (!TS_REQ_print_bio(out_bio, query)) 410 goto end; 411 } else { 412 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 413 goto end; 414 if (!i2d_TS_REQ_bio(out_bio, query)) 415 goto end; 416 } 417 418 ret = 1; 419 420 end: 421 ERR_print_errors(bio_err); 422 BIO_free_all(in_bio); 423 BIO_free_all(data_bio); 424 BIO_free_all(out_bio); 425 TS_REQ_free(query); 426 return ret; 427 } 428 429 static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, 430 const char *policy, int no_nonce, int cert) 431 { 432 int ret = 0; 433 TS_REQ *ts_req = NULL; 434 int len; 435 TS_MSG_IMPRINT *msg_imprint = NULL; 436 X509_ALGOR *algo = NULL; 437 unsigned char *data = NULL; 438 ASN1_OBJECT *policy_obj = NULL; 439 ASN1_INTEGER *nonce_asn1 = NULL; 440 441 if (md == NULL && (md = EVP_get_digestbyname("sha1")) == NULL) 442 goto err; 443 if ((ts_req = TS_REQ_new()) == NULL) 444 goto err; 445 if (!TS_REQ_set_version(ts_req, 1)) 446 goto err; 447 if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) 448 goto err; 449 if ((algo = X509_ALGOR_new()) == NULL) 450 goto err; 451 if ((algo->algorithm = OBJ_nid2obj(EVP_MD_type(md))) == NULL) 452 goto err; 453 if ((algo->parameter = ASN1_TYPE_new()) == NULL) 454 goto err; 455 algo->parameter->type = V_ASN1_NULL; 456 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) 457 goto err; 458 if ((len = create_digest(data_bio, digest, md, &data)) == 0) 459 goto err; 460 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) 461 goto err; 462 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) 463 goto err; 464 if (policy && (policy_obj = txt2obj(policy)) == NULL) 465 goto err; 466 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) 467 goto err; 468 469 /* Setting nonce if requested. */ 470 if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) 471 goto err; 472 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) 473 goto err; 474 if (!TS_REQ_set_cert_req(ts_req, cert)) 475 goto err; 476 477 ret = 1; 478 err: 479 if (!ret) { 480 TS_REQ_free(ts_req); 481 ts_req = NULL; 482 BIO_printf(bio_err, "could not create query\n"); 483 ERR_print_errors(bio_err); 484 } 485 TS_MSG_IMPRINT_free(msg_imprint); 486 X509_ALGOR_free(algo); 487 OPENSSL_free(data); 488 ASN1_OBJECT_free(policy_obj); 489 ASN1_INTEGER_free(nonce_asn1); 490 return ts_req; 491 } 492 493 static int create_digest(BIO *input, const char *digest, const EVP_MD *md, 494 unsigned char **md_value) 495 { 496 int md_value_len; 497 int rv = 0; 498 EVP_MD_CTX *md_ctx = NULL; 499 500 md_value_len = EVP_MD_size(md); 501 if (md_value_len < 0) 502 return 0; 503 504 if (input) { 505 unsigned char buffer[4096]; 506 int length; 507 508 md_ctx = EVP_MD_CTX_new(); 509 if (md_ctx == NULL) 510 return 0; 511 *md_value = app_malloc(md_value_len, "digest buffer"); 512 if (!EVP_DigestInit(md_ctx, md)) 513 goto err; 514 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { 515 if (!EVP_DigestUpdate(md_ctx, buffer, length)) 516 goto err; 517 } 518 if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) 519 goto err; 520 md_value_len = EVP_MD_size(md); 521 } else { 522 long digest_len; 523 *md_value = OPENSSL_hexstr2buf(digest, &digest_len); 524 if (!*md_value || md_value_len != digest_len) { 525 OPENSSL_free(*md_value); 526 *md_value = NULL; 527 BIO_printf(bio_err, "bad digest, %d bytes " 528 "must be specified\n", md_value_len); 529 return 0; 530 } 531 } 532 rv = md_value_len; 533 err: 534 EVP_MD_CTX_free(md_ctx); 535 return rv; 536 } 537 538 static ASN1_INTEGER *create_nonce(int bits) 539 { 540 unsigned char buf[20]; 541 ASN1_INTEGER *nonce = NULL; 542 int len = (bits - 1) / 8 + 1; 543 int i; 544 545 if (len > (int)sizeof(buf)) 546 goto err; 547 if (RAND_bytes(buf, len) <= 0) 548 goto err; 549 550 /* Find the first non-zero byte and creating ASN1_INTEGER object. */ 551 for (i = 0; i < len && !buf[i]; ++i) 552 continue; 553 if ((nonce = ASN1_INTEGER_new()) == NULL) 554 goto err; 555 OPENSSL_free(nonce->data); 556 nonce->length = len - i; 557 nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); 558 memcpy(nonce->data, buf + i, nonce->length); 559 return nonce; 560 561 err: 562 BIO_printf(bio_err, "could not create nonce\n"); 563 ASN1_INTEGER_free(nonce); 564 return NULL; 565 } 566 567 /* 568 * Reply-related method definitions. 569 */ 570 571 static int reply_command(CONF *conf, const char *section, const char *engine, 572 const char *queryfile, const char *passin, const char *inkey, 573 const EVP_MD *md, const char *signer, const char *chain, 574 const char *policy, const char *in, int token_in, 575 const char *out, int token_out, int text) 576 { 577 int ret = 0; 578 TS_RESP *response = NULL; 579 BIO *in_bio = NULL; 580 BIO *query_bio = NULL; 581 BIO *inkey_bio = NULL; 582 BIO *signer_bio = NULL; 583 BIO *out_bio = NULL; 584 585 if (in != NULL) { 586 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 587 goto end; 588 if (token_in) { 589 response = read_PKCS7(in_bio); 590 } else { 591 response = d2i_TS_RESP_bio(in_bio, NULL); 592 } 593 } else { 594 response = create_response(conf, section, engine, queryfile, 595 passin, inkey, md, signer, chain, policy); 596 if (response) 597 BIO_printf(bio_err, "Response has been generated.\n"); 598 else 599 BIO_printf(bio_err, "Response is not generated.\n"); 600 } 601 if (response == NULL) 602 goto end; 603 604 /* Write response. */ 605 if (text) { 606 if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) 607 goto end; 608 if (token_out) { 609 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); 610 if (!TS_TST_INFO_print_bio(out_bio, tst_info)) 611 goto end; 612 } else { 613 if (!TS_RESP_print_bio(out_bio, response)) 614 goto end; 615 } 616 } else { 617 if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) 618 goto end; 619 if (token_out) { 620 PKCS7 *token = TS_RESP_get_token(response); 621 if (!i2d_PKCS7_bio(out_bio, token)) 622 goto end; 623 } else { 624 if (!i2d_TS_RESP_bio(out_bio, response)) 625 goto end; 626 } 627 } 628 629 ret = 1; 630 631 end: 632 ERR_print_errors(bio_err); 633 BIO_free_all(in_bio); 634 BIO_free_all(query_bio); 635 BIO_free_all(inkey_bio); 636 BIO_free_all(signer_bio); 637 BIO_free_all(out_bio); 638 TS_RESP_free(response); 639 return ret; 640 } 641 642 /* Reads a PKCS7 token and adds default 'granted' status info to it. */ 643 static TS_RESP *read_PKCS7(BIO *in_bio) 644 { 645 int ret = 0; 646 PKCS7 *token = NULL; 647 TS_TST_INFO *tst_info = NULL; 648 TS_RESP *resp = NULL; 649 TS_STATUS_INFO *si = NULL; 650 651 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 652 goto end; 653 if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) 654 goto end; 655 if ((resp = TS_RESP_new()) == NULL) 656 goto end; 657 if ((si = TS_STATUS_INFO_new()) == NULL) 658 goto end; 659 if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) 660 goto end; 661 if (!TS_RESP_set_status_info(resp, si)) 662 goto end; 663 TS_RESP_set_tst_info(resp, token, tst_info); 664 token = NULL; /* Ownership is lost. */ 665 tst_info = NULL; /* Ownership is lost. */ 666 ret = 1; 667 668 end: 669 PKCS7_free(token); 670 TS_TST_INFO_free(tst_info); 671 if (!ret) { 672 TS_RESP_free(resp); 673 resp = NULL; 674 } 675 TS_STATUS_INFO_free(si); 676 return resp; 677 } 678 679 static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, 680 const char *queryfile, const char *passin, 681 const char *inkey, const EVP_MD *md, const char *signer, 682 const char *chain, const char *policy) 683 { 684 int ret = 0; 685 TS_RESP *response = NULL; 686 BIO *query_bio = NULL; 687 TS_RESP_CTX *resp_ctx = NULL; 688 689 if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) 690 goto end; 691 if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) 692 goto end; 693 if ((resp_ctx = TS_RESP_CTX_new()) == NULL) 694 goto end; 695 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) 696 goto end; 697 # ifndef OPENSSL_NO_ENGINE 698 if (!TS_CONF_set_crypto_device(conf, section, engine)) 699 goto end; 700 # endif 701 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) 702 goto end; 703 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) 704 goto end; 705 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) 706 goto end; 707 708 if (md) { 709 if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) 710 goto end; 711 } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { 712 goto end; 713 } 714 715 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) 716 goto end; 717 if (!TS_CONF_set_policies(conf, section, resp_ctx)) 718 goto end; 719 if (!TS_CONF_set_digests(conf, section, resp_ctx)) 720 goto end; 721 if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) 722 goto end; 723 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) 724 goto end; 725 if (!TS_CONF_set_ordering(conf, section, resp_ctx)) 726 goto end; 727 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) 728 goto end; 729 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) 730 goto end; 731 if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) 732 goto end; 733 ret = 1; 734 735 end: 736 if (!ret) { 737 TS_RESP_free(response); 738 response = NULL; 739 } 740 TS_RESP_CTX_free(resp_ctx); 741 BIO_free_all(query_bio); 742 return response; 743 } 744 745 static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) 746 { 747 const char *serial_file = (const char *)data; 748 ASN1_INTEGER *serial = next_serial(serial_file); 749 750 if (!serial) { 751 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 752 "Error during serial number " 753 "generation."); 754 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); 755 } else 756 save_ts_serial(serial_file, serial); 757 758 return serial; 759 } 760 761 static ASN1_INTEGER *next_serial(const char *serialfile) 762 { 763 int ret = 0; 764 BIO *in = NULL; 765 ASN1_INTEGER *serial = NULL; 766 BIGNUM *bn = NULL; 767 768 if ((serial = ASN1_INTEGER_new()) == NULL) 769 goto err; 770 771 if ((in = BIO_new_file(serialfile, "r")) == NULL) { 772 ERR_clear_error(); 773 BIO_printf(bio_err, "Warning: could not open file %s for " 774 "reading, using serial number: 1\n", serialfile); 775 if (!ASN1_INTEGER_set(serial, 1)) 776 goto err; 777 } else { 778 char buf[1024]; 779 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { 780 BIO_printf(bio_err, "unable to load number from %s\n", 781 serialfile); 782 goto err; 783 } 784 if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) 785 goto err; 786 ASN1_INTEGER_free(serial); 787 serial = NULL; 788 if (!BN_add_word(bn, 1)) 789 goto err; 790 if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) 791 goto err; 792 } 793 ret = 1; 794 795 err: 796 if (!ret) { 797 ASN1_INTEGER_free(serial); 798 serial = NULL; 799 } 800 BIO_free_all(in); 801 BN_free(bn); 802 return serial; 803 } 804 805 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) 806 { 807 int ret = 0; 808 BIO *out = NULL; 809 810 if ((out = BIO_new_file(serialfile, "w")) == NULL) 811 goto err; 812 if (i2a_ASN1_INTEGER(out, serial) <= 0) 813 goto err; 814 if (BIO_puts(out, "\n") <= 0) 815 goto err; 816 ret = 1; 817 err: 818 if (!ret) 819 BIO_printf(bio_err, "could not save serial number to %s\n", 820 serialfile); 821 BIO_free_all(out); 822 return ret; 823 } 824 825 826 /* 827 * Verify-related method definitions. 828 */ 829 830 static int verify_command(const char *data, const char *digest, const char *queryfile, 831 const char *in, int token_in, 832 const char *CApath, const char *CAfile, const char *untrusted, 833 X509_VERIFY_PARAM *vpm) 834 { 835 BIO *in_bio = NULL; 836 PKCS7 *token = NULL; 837 TS_RESP *response = NULL; 838 TS_VERIFY_CTX *verify_ctx = NULL; 839 int ret = 0; 840 841 if ((in_bio = BIO_new_file(in, "rb")) == NULL) 842 goto end; 843 if (token_in) { 844 if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) 845 goto end; 846 } else { 847 if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) 848 goto end; 849 } 850 851 if ((verify_ctx = create_verify_ctx(data, digest, queryfile, 852 CApath, CAfile, untrusted, 853 vpm)) == NULL) 854 goto end; 855 856 ret = token_in 857 ? TS_RESP_verify_token(verify_ctx, token) 858 : TS_RESP_verify_response(verify_ctx, response); 859 860 end: 861 printf("Verification: "); 862 if (ret) 863 printf("OK\n"); 864 else { 865 printf("FAILED\n"); 866 ERR_print_errors(bio_err); 867 } 868 869 BIO_free_all(in_bio); 870 PKCS7_free(token); 871 TS_RESP_free(response); 872 TS_VERIFY_CTX_free(verify_ctx); 873 return ret; 874 } 875 876 static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, 877 const char *queryfile, 878 const char *CApath, const char *CAfile, 879 const char *untrusted, 880 X509_VERIFY_PARAM *vpm) 881 { 882 TS_VERIFY_CTX *ctx = NULL; 883 BIO *input = NULL; 884 TS_REQ *request = NULL; 885 int ret = 0; 886 int f = 0; 887 888 if (data != NULL || digest != NULL) { 889 if ((ctx = TS_VERIFY_CTX_new()) == NULL) 890 goto err; 891 f = TS_VFY_VERSION | TS_VFY_SIGNER; 892 if (data != NULL) { 893 BIO *out = NULL; 894 895 f |= TS_VFY_DATA; 896 if ((out = BIO_new_file(data, "rb")) == NULL) 897 goto err; 898 if (TS_VERIFY_CTX_set_data(ctx, out) == NULL) { 899 BIO_free_all(out); 900 goto err; 901 } 902 } else if (digest != NULL) { 903 long imprint_len; 904 unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); 905 f |= TS_VFY_IMPRINT; 906 if (TS_VERIFY_CTX_set_imprint(ctx, hexstr, imprint_len) == NULL) { 907 BIO_printf(bio_err, "invalid digest string\n"); 908 goto err; 909 } 910 } 911 912 } else if (queryfile != NULL) { 913 if ((input = BIO_new_file(queryfile, "rb")) == NULL) 914 goto err; 915 if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) 916 goto err; 917 if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) 918 goto err; 919 } else 920 return NULL; 921 922 /* Add the signature verification flag and arguments. */ 923 TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); 924 925 /* Initialising the X509_STORE object. */ 926 if (TS_VERIFY_CTX_set_store(ctx, create_cert_store(CApath, CAfile, vpm)) 927 == NULL) 928 goto err; 929 930 /* Loading untrusted certificates. */ 931 if (untrusted 932 && TS_VERIFY_CTS_set_certs(ctx, TS_CONF_load_certs(untrusted)) == NULL) 933 goto err; 934 ret = 1; 935 936 err: 937 if (!ret) { 938 TS_VERIFY_CTX_free(ctx); 939 ctx = NULL; 940 } 941 BIO_free_all(input); 942 TS_REQ_free(request); 943 return ctx; 944 } 945 946 static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, 947 X509_VERIFY_PARAM *vpm) 948 { 949 X509_STORE *cert_ctx = NULL; 950 X509_LOOKUP *lookup = NULL; 951 int i; 952 953 cert_ctx = X509_STORE_new(); 954 X509_STORE_set_verify_cb(cert_ctx, verify_cb); 955 if (CApath != NULL) { 956 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); 957 if (lookup == NULL) { 958 BIO_printf(bio_err, "memory allocation failure\n"); 959 goto err; 960 } 961 i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM); 962 if (!i) { 963 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 964 goto err; 965 } 966 } 967 968 if (CAfile != NULL) { 969 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); 970 if (lookup == NULL) { 971 BIO_printf(bio_err, "memory allocation failure\n"); 972 goto err; 973 } 974 i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM); 975 if (!i) { 976 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 977 goto err; 978 } 979 } 980 981 if (vpm != NULL) 982 X509_STORE_set1_param(cert_ctx, vpm); 983 984 return cert_ctx; 985 986 err: 987 X509_STORE_free(cert_ctx); 988 return NULL; 989 } 990 991 static int verify_cb(int ok, X509_STORE_CTX *ctx) 992 { 993 return ok; 994 } 995 #endif /* ndef OPENSSL_NO_TS */ 996