1 /* ocsp.c */ 2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stdio.h> 60 #include <string.h> 61 #include "apps.h" 62 #include <openssl/pem.h> 63 #include <openssl/ocsp.h> 64 #include <openssl/err.h> 65 #include <openssl/ssl.h> 66 67 /* Maximum leeway in validity period: default 5 minutes */ 68 #define MAX_VALIDITY_PERIOD (5 * 60) 69 70 /* CA index.txt definitions */ 71 #define DB_type 0 72 #define DB_exp_date 1 73 #define DB_rev_date 2 74 #define DB_serial 3 /* index - unique */ 75 #define DB_file 4 76 #define DB_name 5 /* index - unique for active */ 77 #define DB_NUMBER 6 78 79 #define DB_TYPE_REV 'R' 80 #define DB_TYPE_EXP 'E' 81 #define DB_TYPE_VAL 'V' 82 83 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 84 STACK_OF(OCSP_CERTID) *ids); 85 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 86 STACK_OF(OCSP_CERTID) *ids); 87 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 88 STACK *names, STACK_OF(OCSP_CERTID) *ids, 89 long nsec, long maxage); 90 91 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, TXT_DB *db, 92 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 93 STACK_OF(X509) *rother, unsigned long flags, 94 int nmin, int ndays); 95 96 static char **lookup_serial(TXT_DB *db, ASN1_INTEGER *ser); 97 static BIO *init_responder(char *port); 98 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port); 99 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); 100 101 #undef PROG 102 #define PROG ocsp_main 103 104 int MAIN(int, char **); 105 106 int MAIN(int argc, char **argv) 107 { 108 ENGINE *e = NULL; 109 char **args; 110 char *host = NULL, *port = NULL, *path = "/"; 111 char *reqin = NULL, *respin = NULL; 112 char *reqout = NULL, *respout = NULL; 113 char *signfile = NULL, *keyfile = NULL; 114 char *rsignfile = NULL, *rkeyfile = NULL; 115 char *outfile = NULL; 116 int add_nonce = 1, noverify = 0, use_ssl = -1; 117 OCSP_REQUEST *req = NULL; 118 OCSP_RESPONSE *resp = NULL; 119 OCSP_BASICRESP *bs = NULL; 120 X509 *issuer = NULL, *cert = NULL; 121 X509 *signer = NULL, *rsigner = NULL; 122 EVP_PKEY *key = NULL, *rkey = NULL; 123 BIO *acbio = NULL, *cbio = NULL; 124 BIO *derbio = NULL; 125 BIO *out = NULL; 126 int req_text = 0, resp_text = 0; 127 long nsec = MAX_VALIDITY_PERIOD, maxage = -1; 128 char *CAfile = NULL, *CApath = NULL; 129 X509_STORE *store = NULL; 130 SSL_CTX *ctx = NULL; 131 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; 132 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; 133 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; 134 int ret = 1; 135 int accept_count = -1; 136 int badarg = 0; 137 int i; 138 STACK *reqnames = NULL; 139 STACK_OF(OCSP_CERTID) *ids = NULL; 140 141 X509 *rca_cert = NULL; 142 char *ridx_filename = NULL; 143 char *rca_filename = NULL; 144 TXT_DB *rdb = NULL; 145 int nmin = 0, ndays = -1; 146 147 if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); 148 149 if (!load_config(bio_err, NULL)) 150 goto end; 151 SSL_load_error_strings(); 152 args = argv + 1; 153 reqnames = sk_new_null(); 154 ids = sk_OCSP_CERTID_new_null(); 155 while (!badarg && *args && *args[0] == '-') 156 { 157 if (!strcmp(*args, "-out")) 158 { 159 if (args[1]) 160 { 161 args++; 162 outfile = *args; 163 } 164 else badarg = 1; 165 } 166 else if (!strcmp(*args, "-url")) 167 { 168 if (args[1]) 169 { 170 args++; 171 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) 172 { 173 BIO_printf(bio_err, "Error parsing URL\n"); 174 badarg = 1; 175 } 176 } 177 else badarg = 1; 178 } 179 else if (!strcmp(*args, "-host")) 180 { 181 if (args[1]) 182 { 183 args++; 184 host = *args; 185 } 186 else badarg = 1; 187 } 188 else if (!strcmp(*args, "-port")) 189 { 190 if (args[1]) 191 { 192 args++; 193 port = *args; 194 } 195 else badarg = 1; 196 } 197 else if (!strcmp(*args, "-noverify")) 198 noverify = 1; 199 else if (!strcmp(*args, "-nonce")) 200 add_nonce = 2; 201 else if (!strcmp(*args, "-no_nonce")) 202 add_nonce = 0; 203 else if (!strcmp(*args, "-resp_no_certs")) 204 rflags |= OCSP_NOCERTS; 205 else if (!strcmp(*args, "-resp_key_id")) 206 rflags |= OCSP_RESPID_KEY; 207 else if (!strcmp(*args, "-no_certs")) 208 sign_flags |= OCSP_NOCERTS; 209 else if (!strcmp(*args, "-no_signature_verify")) 210 verify_flags |= OCSP_NOSIGS; 211 else if (!strcmp(*args, "-no_cert_verify")) 212 verify_flags |= OCSP_NOVERIFY; 213 else if (!strcmp(*args, "-no_chain")) 214 verify_flags |= OCSP_NOCHAIN; 215 else if (!strcmp(*args, "-no_cert_checks")) 216 verify_flags |= OCSP_NOCHECKS; 217 else if (!strcmp(*args, "-no_explicit")) 218 verify_flags |= OCSP_NOEXPLICIT; 219 else if (!strcmp(*args, "-trust_other")) 220 verify_flags |= OCSP_TRUSTOTHER; 221 else if (!strcmp(*args, "-no_intern")) 222 verify_flags |= OCSP_NOINTERN; 223 else if (!strcmp(*args, "-text")) 224 { 225 req_text = 1; 226 resp_text = 1; 227 } 228 else if (!strcmp(*args, "-req_text")) 229 req_text = 1; 230 else if (!strcmp(*args, "-resp_text")) 231 resp_text = 1; 232 else if (!strcmp(*args, "-reqin")) 233 { 234 if (args[1]) 235 { 236 args++; 237 reqin = *args; 238 } 239 else badarg = 1; 240 } 241 else if (!strcmp(*args, "-respin")) 242 { 243 if (args[1]) 244 { 245 args++; 246 respin = *args; 247 } 248 else badarg = 1; 249 } 250 else if (!strcmp(*args, "-signer")) 251 { 252 if (args[1]) 253 { 254 args++; 255 signfile = *args; 256 } 257 else badarg = 1; 258 } 259 else if (!strcmp (*args, "-VAfile")) 260 { 261 if (args[1]) 262 { 263 args++; 264 verify_certfile = *args; 265 verify_flags |= OCSP_TRUSTOTHER; 266 } 267 else badarg = 1; 268 } 269 else if (!strcmp(*args, "-sign_other")) 270 { 271 if (args[1]) 272 { 273 args++; 274 sign_certfile = *args; 275 } 276 else badarg = 1; 277 } 278 else if (!strcmp(*args, "-verify_other")) 279 { 280 if (args[1]) 281 { 282 args++; 283 verify_certfile = *args; 284 } 285 else badarg = 1; 286 } 287 else if (!strcmp (*args, "-CAfile")) 288 { 289 if (args[1]) 290 { 291 args++; 292 CAfile = *args; 293 } 294 else badarg = 1; 295 } 296 else if (!strcmp (*args, "-CApath")) 297 { 298 if (args[1]) 299 { 300 args++; 301 CApath = *args; 302 } 303 else badarg = 1; 304 } 305 else if (!strcmp (*args, "-validity_period")) 306 { 307 if (args[1]) 308 { 309 args++; 310 nsec = atol(*args); 311 if (nsec < 0) 312 { 313 BIO_printf(bio_err, 314 "Illegal validity period %s\n", 315 *args); 316 badarg = 1; 317 } 318 } 319 else badarg = 1; 320 } 321 else if (!strcmp (*args, "-status_age")) 322 { 323 if (args[1]) 324 { 325 args++; 326 maxage = atol(*args); 327 if (maxage < 0) 328 { 329 BIO_printf(bio_err, 330 "Illegal validity age %s\n", 331 *args); 332 badarg = 1; 333 } 334 } 335 else badarg = 1; 336 } 337 else if (!strcmp(*args, "-signkey")) 338 { 339 if (args[1]) 340 { 341 args++; 342 keyfile = *args; 343 } 344 else badarg = 1; 345 } 346 else if (!strcmp(*args, "-reqout")) 347 { 348 if (args[1]) 349 { 350 args++; 351 reqout = *args; 352 } 353 else badarg = 1; 354 } 355 else if (!strcmp(*args, "-respout")) 356 { 357 if (args[1]) 358 { 359 args++; 360 respout = *args; 361 } 362 else badarg = 1; 363 } 364 else if (!strcmp(*args, "-path")) 365 { 366 if (args[1]) 367 { 368 args++; 369 path = *args; 370 } 371 else badarg = 1; 372 } 373 else if (!strcmp(*args, "-issuer")) 374 { 375 if (args[1]) 376 { 377 args++; 378 X509_free(issuer); 379 issuer = load_cert(bio_err, *args, FORMAT_PEM, 380 NULL, e, "issuer certificate"); 381 if(!issuer) goto end; 382 } 383 else badarg = 1; 384 } 385 else if (!strcmp (*args, "-cert")) 386 { 387 if (args[1]) 388 { 389 args++; 390 X509_free(cert); 391 cert = load_cert(bio_err, *args, FORMAT_PEM, 392 NULL, e, "certificate"); 393 if(!cert) goto end; 394 if(!add_ocsp_cert(&req, cert, issuer, ids)) 395 goto end; 396 if(!sk_push(reqnames, *args)) 397 goto end; 398 } 399 else badarg = 1; 400 } 401 else if (!strcmp(*args, "-serial")) 402 { 403 if (args[1]) 404 { 405 args++; 406 if(!add_ocsp_serial(&req, *args, issuer, ids)) 407 goto end; 408 if(!sk_push(reqnames, *args)) 409 goto end; 410 } 411 else badarg = 1; 412 } 413 else if (!strcmp(*args, "-index")) 414 { 415 if (args[1]) 416 { 417 args++; 418 ridx_filename = *args; 419 } 420 else badarg = 1; 421 } 422 else if (!strcmp(*args, "-CA")) 423 { 424 if (args[1]) 425 { 426 args++; 427 rca_filename = *args; 428 } 429 else badarg = 1; 430 } 431 else if (!strcmp (*args, "-nmin")) 432 { 433 if (args[1]) 434 { 435 args++; 436 nmin = atol(*args); 437 if (nmin < 0) 438 { 439 BIO_printf(bio_err, 440 "Illegal update period %s\n", 441 *args); 442 badarg = 1; 443 } 444 } 445 if (ndays == -1) 446 ndays = 0; 447 else badarg = 1; 448 } 449 else if (!strcmp (*args, "-nrequest")) 450 { 451 if (args[1]) 452 { 453 args++; 454 accept_count = atol(*args); 455 if (accept_count < 0) 456 { 457 BIO_printf(bio_err, 458 "Illegal accept count %s\n", 459 *args); 460 badarg = 1; 461 } 462 } 463 else badarg = 1; 464 } 465 else if (!strcmp (*args, "-ndays")) 466 { 467 if (args[1]) 468 { 469 args++; 470 ndays = atol(*args); 471 if (ndays < 0) 472 { 473 BIO_printf(bio_err, 474 "Illegal update period %s\n", 475 *args); 476 badarg = 1; 477 } 478 } 479 else badarg = 1; 480 } 481 else if (!strcmp(*args, "-rsigner")) 482 { 483 if (args[1]) 484 { 485 args++; 486 rsignfile = *args; 487 } 488 else badarg = 1; 489 } 490 else if (!strcmp(*args, "-rkey")) 491 { 492 if (args[1]) 493 { 494 args++; 495 rkeyfile = *args; 496 } 497 else badarg = 1; 498 } 499 else if (!strcmp(*args, "-rother")) 500 { 501 if (args[1]) 502 { 503 args++; 504 rcertfile = *args; 505 } 506 else badarg = 1; 507 } 508 else badarg = 1; 509 args++; 510 } 511 512 /* Have we anything to do? */ 513 if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1; 514 515 if (badarg) 516 { 517 BIO_printf (bio_err, "OCSP utility\n"); 518 BIO_printf (bio_err, "Usage ocsp [options]\n"); 519 BIO_printf (bio_err, "where options are\n"); 520 BIO_printf (bio_err, "-out file output filename\n"); 521 BIO_printf (bio_err, "-issuer file issuer certificate\n"); 522 BIO_printf (bio_err, "-cert file certificate to check\n"); 523 BIO_printf (bio_err, "-serial n serial number to check\n"); 524 BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n"); 525 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n"); 526 BIO_printf (bio_err, "-sign_certs file additional certificates to include in signed request\n"); 527 BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n"); 528 BIO_printf (bio_err, "-req_text print text form of request\n"); 529 BIO_printf (bio_err, "-resp_text print text form of response\n"); 530 BIO_printf (bio_err, "-text print text form of request and response\n"); 531 BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n"); 532 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n"); 533 BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n"); 534 BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n"); 535 BIO_printf (bio_err, "-nonce add OCSP nonce to request\n"); 536 BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n"); 537 BIO_printf (bio_err, "-url URL OCSP responder URL\n"); 538 BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n"); 539 BIO_printf (bio_err, "-path path to use in OCSP request\n"); 540 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); 541 BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); 542 BIO_printf (bio_err, "-VAfile file validator certificates file\n"); 543 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n"); 544 BIO_printf (bio_err, "-status_age n maximum status age in seconds\n"); 545 BIO_printf (bio_err, "-noverify don't verify response at all\n"); 546 BIO_printf (bio_err, "-verify_certs file additional certificates to search for signer\n"); 547 BIO_printf (bio_err, "-trust_other don't verify additional certificates\n"); 548 BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n"); 549 BIO_printf (bio_err, "-no_sig_verify don't check signature on response\n"); 550 BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n"); 551 BIO_printf (bio_err, "-no_chain don't chain verify response\n"); 552 BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n"); 553 BIO_printf (bio_err, "-port num port to run responder on\n"); 554 BIO_printf (bio_err, "-index file certificate status index file\n"); 555 BIO_printf (bio_err, "-CA file CA certificate\n"); 556 BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n"); 557 BIO_printf (bio_err, "-rkey file responder key to sign responses with\n"); 558 BIO_printf (bio_err, "-rother file other certificates to include in response\n"); 559 BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n"); 560 BIO_printf (bio_err, "-nmin n number of minutes before next update\n"); 561 BIO_printf (bio_err, "-ndays n number of days before next update\n"); 562 BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n"); 563 BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n"); 564 goto end; 565 } 566 567 if(outfile) out = BIO_new_file(outfile, "w"); 568 else out = BIO_new_fp(stdout, BIO_NOCLOSE); 569 570 if(!out) 571 { 572 BIO_printf(bio_err, "Error opening output file\n"); 573 goto end; 574 } 575 576 if (!req && (add_nonce != 2)) add_nonce = 0; 577 578 if (!req && reqin) 579 { 580 derbio = BIO_new_file(reqin, "rb"); 581 if (!derbio) 582 { 583 BIO_printf(bio_err, "Error Opening OCSP request file\n"); 584 goto end; 585 } 586 req = d2i_OCSP_REQUEST_bio(derbio, NULL); 587 BIO_free(derbio); 588 if(!req) 589 { 590 BIO_printf(bio_err, "Error reading OCSP request\n"); 591 goto end; 592 } 593 } 594 595 if (!req && port) 596 { 597 acbio = init_responder(port); 598 if (!acbio) 599 goto end; 600 } 601 602 if (rsignfile && !rdb) 603 { 604 if (!rkeyfile) rkeyfile = rsignfile; 605 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM, 606 NULL, e, "responder certificate"); 607 if (!rsigner) 608 { 609 BIO_printf(bio_err, "Error loading responder certificate\n"); 610 goto end; 611 } 612 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM, 613 NULL, e, "CA certificate"); 614 if (rcertfile) 615 { 616 rother = load_certs(bio_err, rcertfile, FORMAT_PEM, 617 NULL, e, "responder other certificates"); 618 if (!rother) goto end; 619 } 620 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL, 621 "responder private key"); 622 if (!rkey) 623 goto end; 624 } 625 if(acbio) 626 BIO_printf(bio_err, "Waiting for OCSP client connections...\n"); 627 628 redo_accept: 629 630 if (acbio) 631 { 632 if (!do_responder(&req, &cbio, acbio, port)) 633 goto end; 634 if (!req) 635 { 636 resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 637 send_ocsp_response(cbio, resp); 638 goto done_resp; 639 } 640 } 641 642 if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) 643 { 644 BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); 645 goto end; 646 } 647 648 if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1); 649 650 if (signfile) 651 { 652 if (!keyfile) keyfile = signfile; 653 signer = load_cert(bio_err, signfile, FORMAT_PEM, 654 NULL, e, "signer certificate"); 655 if (!signer) 656 { 657 BIO_printf(bio_err, "Error loading signer certificate\n"); 658 goto end; 659 } 660 if (sign_certfile) 661 { 662 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM, 663 NULL, e, "signer certificates"); 664 if (!sign_other) goto end; 665 } 666 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL, 667 "signer private key"); 668 if (!key) 669 goto end; 670 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags)) 671 { 672 BIO_printf(bio_err, "Error signing OCSP request\n"); 673 goto end; 674 } 675 } 676 677 if (req_text && req) OCSP_REQUEST_print(out, req, 0); 678 679 if (reqout) 680 { 681 derbio = BIO_new_file(reqout, "wb"); 682 if(!derbio) 683 { 684 BIO_printf(bio_err, "Error opening file %s\n", reqout); 685 goto end; 686 } 687 i2d_OCSP_REQUEST_bio(derbio, req); 688 BIO_free(derbio); 689 } 690 691 if (ridx_filename && (!rkey || !rsigner || !rca_cert)) 692 { 693 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n"); 694 goto end; 695 } 696 697 if (ridx_filename && !rdb) 698 { 699 BIO *db_bio = NULL; 700 db_bio = BIO_new_file(ridx_filename, "r"); 701 if (!db_bio) 702 { 703 BIO_printf(bio_err, "Error opening index file %s\n", ridx_filename); 704 goto end; 705 } 706 rdb = TXT_DB_read(db_bio, DB_NUMBER); 707 BIO_free(db_bio); 708 if (!rdb) 709 { 710 BIO_printf(bio_err, "Error reading index file %s\n", ridx_filename); 711 goto end; 712 } 713 if (!make_serial_index(rdb)) 714 goto end; 715 } 716 717 if (rdb) 718 { 719 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays); 720 if (cbio) 721 send_ocsp_response(cbio, resp); 722 } 723 else if (host) 724 { 725 cbio = BIO_new_connect(host); 726 if (!cbio) 727 { 728 BIO_printf(bio_err, "Error creating connect BIO\n"); 729 goto end; 730 } 731 if (port) BIO_set_conn_port(cbio, port); 732 if (use_ssl == 1) 733 { 734 BIO *sbio; 735 ctx = SSL_CTX_new(SSLv23_client_method()); 736 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); 737 sbio = BIO_new_ssl(ctx, 1); 738 cbio = BIO_push(sbio, cbio); 739 } 740 if (BIO_do_connect(cbio) <= 0) 741 { 742 BIO_printf(bio_err, "Error connecting BIO\n"); 743 goto end; 744 } 745 resp = OCSP_sendreq_bio(cbio, path, req); 746 BIO_free_all(cbio); 747 cbio = NULL; 748 if (!resp) 749 { 750 BIO_printf(bio_err, "Error querying OCSP responsder\n"); 751 goto end; 752 } 753 } 754 else if (respin) 755 { 756 derbio = BIO_new_file(respin, "rb"); 757 if (!derbio) 758 { 759 BIO_printf(bio_err, "Error Opening OCSP response file\n"); 760 goto end; 761 } 762 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); 763 BIO_free(derbio); 764 if(!resp) 765 { 766 BIO_printf(bio_err, "Error reading OCSP response\n"); 767 goto end; 768 } 769 770 } 771 else 772 { 773 ret = 0; 774 goto end; 775 } 776 777 done_resp: 778 779 if (respout) 780 { 781 derbio = BIO_new_file(respout, "wb"); 782 if(!derbio) 783 { 784 BIO_printf(bio_err, "Error opening file %s\n", respout); 785 goto end; 786 } 787 i2d_OCSP_RESPONSE_bio(derbio, resp); 788 BIO_free(derbio); 789 } 790 791 i = OCSP_response_status(resp); 792 793 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) 794 { 795 BIO_printf(out, "Responder Error: %s (%ld)\n", 796 OCSP_response_status_str(i), i); 797 ret = 0; 798 goto end; 799 } 800 801 if (resp_text) OCSP_RESPONSE_print(out, resp, 0); 802 803 /* If running as responder don't verify our own response */ 804 if (cbio) 805 { 806 if (accept_count > 0) 807 accept_count--; 808 /* Redo if more connections needed */ 809 if (accept_count) 810 { 811 BIO_free_all(cbio); 812 cbio = NULL; 813 OCSP_REQUEST_free(req); 814 req = NULL; 815 OCSP_RESPONSE_free(resp); 816 resp = NULL; 817 goto redo_accept; 818 } 819 goto end; 820 } 821 822 if (!store) 823 store = setup_verify(bio_err, CAfile, CApath); 824 if (!store) 825 goto end; 826 if (verify_certfile) 827 { 828 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM, 829 NULL, e, "validator certificate"); 830 if (!verify_other) goto end; 831 } 832 833 bs = OCSP_response_get1_basic(resp); 834 835 if (!bs) 836 { 837 BIO_printf(bio_err, "Error parsing response\n"); 838 goto end; 839 } 840 841 if (!noverify) 842 { 843 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) 844 { 845 if (i == -1) 846 BIO_printf(bio_err, "WARNING: no nonce in response\n"); 847 else 848 { 849 BIO_printf(bio_err, "Nonce Verify error\n"); 850 goto end; 851 } 852 } 853 854 i = OCSP_basic_verify(bs, verify_other, store, verify_flags); 855 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0); 856 857 if(i <= 0) 858 { 859 BIO_printf(bio_err, "Response Verify Failure\n", i); 860 ERR_print_errors(bio_err); 861 } 862 else 863 BIO_printf(bio_err, "Response verify OK\n"); 864 865 } 866 867 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage)) 868 goto end; 869 870 ret = 0; 871 872 end: 873 ERR_print_errors(bio_err); 874 X509_free(signer); 875 X509_STORE_free(store); 876 EVP_PKEY_free(key); 877 EVP_PKEY_free(rkey); 878 X509_free(issuer); 879 X509_free(cert); 880 X509_free(rsigner); 881 X509_free(rca_cert); 882 TXT_DB_free(rdb); 883 BIO_free_all(cbio); 884 BIO_free_all(acbio); 885 BIO_free(out); 886 OCSP_REQUEST_free(req); 887 OCSP_RESPONSE_free(resp); 888 OCSP_BASICRESP_free(bs); 889 sk_free(reqnames); 890 sk_OCSP_CERTID_free(ids); 891 sk_X509_pop_free(sign_other, X509_free); 892 sk_X509_pop_free(verify_other, X509_free); 893 894 if (use_ssl != -1) 895 { 896 OPENSSL_free(host); 897 OPENSSL_free(port); 898 OPENSSL_free(path); 899 SSL_CTX_free(ctx); 900 } 901 902 OPENSSL_EXIT(ret); 903 } 904 905 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 906 STACK_OF(OCSP_CERTID) *ids) 907 { 908 OCSP_CERTID *id; 909 if(!issuer) 910 { 911 BIO_printf(bio_err, "No issuer certificate specified\n"); 912 return 0; 913 } 914 if(!*req) *req = OCSP_REQUEST_new(); 915 if(!*req) goto err; 916 id = OCSP_cert_to_id(NULL, cert, issuer); 917 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 918 if(!OCSP_request_add0_id(*req, id)) goto err; 919 return 1; 920 921 err: 922 BIO_printf(bio_err, "Error Creating OCSP request\n"); 923 return 0; 924 } 925 926 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 927 STACK_OF(OCSP_CERTID) *ids) 928 { 929 OCSP_CERTID *id; 930 X509_NAME *iname; 931 ASN1_BIT_STRING *ikey; 932 ASN1_INTEGER *sno; 933 if(!issuer) 934 { 935 BIO_printf(bio_err, "No issuer certificate specified\n"); 936 return 0; 937 } 938 if(!*req) *req = OCSP_REQUEST_new(); 939 if(!*req) goto err; 940 iname = X509_get_subject_name(issuer); 941 ikey = X509_get0_pubkey_bitstr(issuer); 942 sno = s2i_ASN1_INTEGER(NULL, serial); 943 if(!sno) 944 { 945 BIO_printf(bio_err, "Error converting serial number %s\n", serial); 946 return 0; 947 } 948 id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno); 949 ASN1_INTEGER_free(sno); 950 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 951 if(!OCSP_request_add0_id(*req, id)) goto err; 952 return 1; 953 954 err: 955 BIO_printf(bio_err, "Error Creating OCSP request\n"); 956 return 0; 957 } 958 959 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 960 STACK *names, STACK_OF(OCSP_CERTID) *ids, 961 long nsec, long maxage) 962 { 963 OCSP_CERTID *id; 964 char *name; 965 int i; 966 967 int status, reason; 968 969 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; 970 971 if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids)) 972 return 1; 973 974 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) 975 { 976 id = sk_OCSP_CERTID_value(ids, i); 977 name = sk_value(names, i); 978 BIO_printf(out, "%s: ", name); 979 980 if(!OCSP_resp_find_status(bs, id, &status, &reason, 981 &rev, &thisupd, &nextupd)) 982 { 983 BIO_puts(out, "ERROR: No Status found.\n"); 984 continue; 985 } 986 987 /* Check validity: if invalid write to output BIO so we 988 * know which response this refers to. 989 */ 990 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) 991 { 992 BIO_puts(out, "WARNING: Status times invalid.\n"); 993 ERR_print_errors(out); 994 } 995 BIO_printf(out, "%s\n", OCSP_cert_status_str(status)); 996 997 BIO_puts(out, "\tThis Update: "); 998 ASN1_GENERALIZEDTIME_print(out, thisupd); 999 BIO_puts(out, "\n"); 1000 1001 if(nextupd) 1002 { 1003 BIO_puts(out, "\tNext Update: "); 1004 ASN1_GENERALIZEDTIME_print(out, nextupd); 1005 BIO_puts(out, "\n"); 1006 } 1007 1008 if (status != V_OCSP_CERTSTATUS_REVOKED) 1009 continue; 1010 1011 if (reason != -1) 1012 BIO_printf(out, "\tReason: %s\n", 1013 OCSP_crl_reason_str(reason)); 1014 1015 BIO_puts(out, "\tRevocation Time: "); 1016 ASN1_GENERALIZEDTIME_print(out, rev); 1017 BIO_puts(out, "\n"); 1018 } 1019 1020 return 1; 1021 } 1022 1023 1024 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, TXT_DB *db, 1025 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 1026 STACK_OF(X509) *rother, unsigned long flags, 1027 int nmin, int ndays) 1028 { 1029 ASN1_TIME *thisupd = NULL, *nextupd = NULL; 1030 OCSP_CERTID *cid, *ca_id = NULL; 1031 OCSP_BASICRESP *bs = NULL; 1032 int i, id_count, ret = 1; 1033 1034 1035 id_count = OCSP_request_onereq_count(req); 1036 1037 if (id_count <= 0) 1038 { 1039 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 1040 goto end; 1041 } 1042 1043 ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca); 1044 1045 bs = OCSP_BASICRESP_new(); 1046 thisupd = X509_gmtime_adj(NULL, 0); 1047 if (ndays != -1) 1048 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 ); 1049 1050 /* Examine each certificate id in the request */ 1051 for (i = 0; i < id_count; i++) 1052 { 1053 OCSP_ONEREQ *one; 1054 ASN1_INTEGER *serial; 1055 char **inf; 1056 one = OCSP_request_onereq_get0(req, i); 1057 cid = OCSP_onereq_get0_id(one); 1058 /* Is this request about our CA? */ 1059 if (OCSP_id_issuer_cmp(ca_id, cid)) 1060 { 1061 OCSP_basic_add1_status(bs, cid, 1062 V_OCSP_CERTSTATUS_UNKNOWN, 1063 0, NULL, 1064 thisupd, nextupd); 1065 continue; 1066 } 1067 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid); 1068 inf = lookup_serial(db, serial); 1069 if (!inf) 1070 OCSP_basic_add1_status(bs, cid, 1071 V_OCSP_CERTSTATUS_UNKNOWN, 1072 0, NULL, 1073 thisupd, nextupd); 1074 else if (inf[DB_type][0] == DB_TYPE_VAL) 1075 OCSP_basic_add1_status(bs, cid, 1076 V_OCSP_CERTSTATUS_GOOD, 1077 0, NULL, 1078 thisupd, nextupd); 1079 else if (inf[DB_type][0] == DB_TYPE_REV) 1080 { 1081 ASN1_OBJECT *inst = NULL; 1082 ASN1_TIME *revtm = NULL; 1083 ASN1_GENERALIZEDTIME *invtm = NULL; 1084 OCSP_SINGLERESP *single; 1085 int reason = -1; 1086 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]); 1087 single = OCSP_basic_add1_status(bs, cid, 1088 V_OCSP_CERTSTATUS_REVOKED, 1089 reason, revtm, 1090 thisupd, nextupd); 1091 if (invtm) 1092 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0); 1093 else if (inst) 1094 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0); 1095 ASN1_OBJECT_free(inst); 1096 ASN1_TIME_free(revtm); 1097 ASN1_GENERALIZEDTIME_free(invtm); 1098 } 1099 } 1100 1101 OCSP_copy_nonce(bs, req); 1102 1103 OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags); 1104 1105 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); 1106 1107 end: 1108 ASN1_TIME_free(thisupd); 1109 ASN1_TIME_free(nextupd); 1110 OCSP_CERTID_free(ca_id); 1111 OCSP_BASICRESP_free(bs); 1112 return ret; 1113 1114 } 1115 1116 static char **lookup_serial(TXT_DB *db, ASN1_INTEGER *ser) 1117 { 1118 int i; 1119 BIGNUM *bn = NULL; 1120 char *itmp, *row[DB_NUMBER],**rrow; 1121 for (i = 0; i < DB_NUMBER; i++) row[i] = NULL; 1122 bn = ASN1_INTEGER_to_BN(ser,NULL); 1123 if (BN_is_zero(bn)) 1124 itmp = BUF_strdup("00"); 1125 else 1126 itmp = BN_bn2hex(bn); 1127 row[DB_serial] = itmp; 1128 BN_free(bn); 1129 rrow=TXT_DB_get_by_index(db,DB_serial,row); 1130 OPENSSL_free(itmp); 1131 return rrow; 1132 } 1133 1134 /* Quick and dirty OCSP server: read in and parse input request */ 1135 1136 static BIO *init_responder(char *port) 1137 { 1138 BIO *acbio = NULL, *bufbio = NULL; 1139 bufbio = BIO_new(BIO_f_buffer()); 1140 if (!bufbio) 1141 goto err; 1142 acbio = BIO_new_accept(port); 1143 if (!acbio) 1144 goto err; 1145 BIO_set_accept_bios(acbio, bufbio); 1146 bufbio = NULL; 1147 1148 if (BIO_do_accept(acbio) <= 0) 1149 { 1150 BIO_printf(bio_err, "Error setting up accept BIO\n"); 1151 ERR_print_errors(bio_err); 1152 goto err; 1153 } 1154 1155 return acbio; 1156 1157 err: 1158 BIO_free_all(acbio); 1159 BIO_free(bufbio); 1160 return NULL; 1161 } 1162 1163 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port) 1164 { 1165 int have_post = 0, len; 1166 OCSP_REQUEST *req = NULL; 1167 char inbuf[1024]; 1168 BIO *cbio = NULL; 1169 1170 if (BIO_do_accept(acbio) <= 0) 1171 { 1172 BIO_printf(bio_err, "Error accepting connection\n"); 1173 ERR_print_errors(bio_err); 1174 return 0; 1175 } 1176 1177 cbio = BIO_pop(acbio); 1178 *pcbio = cbio; 1179 1180 for(;;) 1181 { 1182 len = BIO_gets(cbio, inbuf, sizeof inbuf); 1183 if (len <= 0) 1184 return 1; 1185 /* Look for "POST" signalling start of query */ 1186 if (!have_post) 1187 { 1188 if(strncmp(inbuf, "POST", 4)) 1189 { 1190 BIO_printf(bio_err, "Invalid request\n"); 1191 return 1; 1192 } 1193 have_post = 1; 1194 } 1195 /* Look for end of headers */ 1196 if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) 1197 break; 1198 } 1199 1200 /* Try to read OCSP request */ 1201 1202 req = d2i_OCSP_REQUEST_bio(cbio, NULL); 1203 1204 if (!req) 1205 { 1206 BIO_printf(bio_err, "Error parsing OCSP request\n"); 1207 ERR_print_errors(bio_err); 1208 } 1209 1210 *preq = req; 1211 1212 return 1; 1213 1214 } 1215 1216 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp) 1217 { 1218 char http_resp[] = 1219 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n" 1220 "Content-Length: %d\r\n\r\n"; 1221 if (!cbio) 1222 return 0; 1223 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); 1224 i2d_OCSP_RESPONSE_bio(cbio, resp); 1225 BIO_flush(cbio); 1226 return 1; 1227 } 1228 1229