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#ifndef OPENSSL_NO_OCSP 59 60#include <stdio.h> 61#include <string.h> 62#include "apps.h" 63#include <openssl/pem.h> 64#include <openssl/ocsp.h> 65#include <openssl/err.h> 66#include <openssl/ssl.h> 67#include <openssl/bn.h> 68 69/* Maximum leeway in validity period: default 5 minutes */ 70#define MAX_VALIDITY_PERIOD (5 * 60) 71 72static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 73 STACK_OF(OCSP_CERTID) *ids); 74static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 75 STACK_OF(OCSP_CERTID) *ids); 76static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 77 STACK *names, STACK_OF(OCSP_CERTID) *ids, 78 long nsec, long maxage); 79 80static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, 81 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 82 STACK_OF(X509) *rother, unsigned long flags, 83 int nmin, int ndays); 84 85static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser); 86static BIO *init_responder(char *port); 87static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port); 88static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); 89 90#undef PROG 91#define PROG ocsp_main 92 93int MAIN(int, char **); 94 95int MAIN(int argc, char **argv) 96 { 97 ENGINE *e = NULL; 98 char **args; 99 char *host = NULL, *port = NULL, *path = "/"; 100 char *reqin = NULL, *respin = NULL; 101 char *reqout = NULL, *respout = NULL; 102 char *signfile = NULL, *keyfile = NULL; 103 char *rsignfile = NULL, *rkeyfile = NULL; 104 char *outfile = NULL; 105 int add_nonce = 1, noverify = 0, use_ssl = -1; 106 OCSP_REQUEST *req = NULL; 107 OCSP_RESPONSE *resp = NULL; 108 OCSP_BASICRESP *bs = NULL; 109 X509 *issuer = NULL, *cert = NULL; 110 X509 *signer = NULL, *rsigner = NULL; 111 EVP_PKEY *key = NULL, *rkey = NULL; 112 BIO *acbio = NULL, *cbio = NULL; 113 BIO *derbio = NULL; 114 BIO *out = NULL; 115 int req_text = 0, resp_text = 0; 116 long nsec = MAX_VALIDITY_PERIOD, maxage = -1; 117 char *CAfile = NULL, *CApath = NULL; 118 X509_STORE *store = NULL; 119 SSL_CTX *ctx = NULL; 120 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; 121 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; 122 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; 123 int ret = 1; 124 int accept_count = -1; 125 int badarg = 0; 126 int i; 127 int ignore_err = 0; 128 STACK *reqnames = NULL; 129 STACK_OF(OCSP_CERTID) *ids = NULL; 130 131 X509 *rca_cert = NULL; 132 char *ridx_filename = NULL; 133 char *rca_filename = NULL; 134 CA_DB *rdb = NULL; 135 int nmin = 0, ndays = -1; 136 137 if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); 138 139 if (!load_config(bio_err, NULL)) 140 goto end; 141 SSL_load_error_strings(); 142 OpenSSL_add_ssl_algorithms(); 143 args = argv + 1; 144 reqnames = sk_new_null(); 145 ids = sk_OCSP_CERTID_new_null(); 146 while (!badarg && *args && *args[0] == '-') 147 { 148 if (!strcmp(*args, "-out")) 149 { 150 if (args[1]) 151 { 152 args++; 153 outfile = *args; 154 } 155 else badarg = 1; 156 } 157 else if (!strcmp(*args, "-url")) 158 { 159 if (args[1]) 160 { 161 args++; 162 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) 163 { 164 BIO_printf(bio_err, "Error parsing URL\n"); 165 badarg = 1; 166 } 167 } 168 else badarg = 1; 169 } 170 else if (!strcmp(*args, "-host")) 171 { 172 if (args[1]) 173 { 174 args++; 175 host = *args; 176 } 177 else badarg = 1; 178 } 179 else if (!strcmp(*args, "-port")) 180 { 181 if (args[1]) 182 { 183 args++; 184 port = *args; 185 } 186 else badarg = 1; 187 } 188 else if (!strcmp(*args, "-ignore_err")) 189 ignore_err = 1; 190 else if (!strcmp(*args, "-noverify")) 191 noverify = 1; 192 else if (!strcmp(*args, "-nonce")) 193 add_nonce = 2; 194 else if (!strcmp(*args, "-no_nonce")) 195 add_nonce = 0; 196 else if (!strcmp(*args, "-resp_no_certs")) 197 rflags |= OCSP_NOCERTS; 198 else if (!strcmp(*args, "-resp_key_id")) 199 rflags |= OCSP_RESPID_KEY; 200 else if (!strcmp(*args, "-no_certs")) 201 sign_flags |= OCSP_NOCERTS; 202 else if (!strcmp(*args, "-no_signature_verify")) 203 verify_flags |= OCSP_NOSIGS; 204 else if (!strcmp(*args, "-no_cert_verify")) 205 verify_flags |= OCSP_NOVERIFY; 206 else if (!strcmp(*args, "-no_chain")) 207 verify_flags |= OCSP_NOCHAIN; 208 else if (!strcmp(*args, "-no_cert_checks")) 209 verify_flags |= OCSP_NOCHECKS; 210 else if (!strcmp(*args, "-no_explicit")) 211 verify_flags |= OCSP_NOEXPLICIT; 212 else if (!strcmp(*args, "-trust_other")) 213 verify_flags |= OCSP_TRUSTOTHER; 214 else if (!strcmp(*args, "-no_intern")) 215 verify_flags |= OCSP_NOINTERN; 216 else if (!strcmp(*args, "-text")) 217 { 218 req_text = 1; 219 resp_text = 1; 220 } 221 else if (!strcmp(*args, "-req_text")) 222 req_text = 1; 223 else if (!strcmp(*args, "-resp_text")) 224 resp_text = 1; 225 else if (!strcmp(*args, "-reqin")) 226 { 227 if (args[1]) 228 { 229 args++; 230 reqin = *args; 231 } 232 else badarg = 1; 233 } 234 else if (!strcmp(*args, "-respin")) 235 { 236 if (args[1]) 237 { 238 args++; 239 respin = *args; 240 } 241 else badarg = 1; 242 } 243 else if (!strcmp(*args, "-signer")) 244 { 245 if (args[1]) 246 { 247 args++; 248 signfile = *args; 249 } 250 else badarg = 1; 251 } 252 else if (!strcmp (*args, "-VAfile")) 253 { 254 if (args[1]) 255 { 256 args++; 257 verify_certfile = *args; 258 verify_flags |= OCSP_TRUSTOTHER; 259 } 260 else badarg = 1; 261 } 262 else if (!strcmp(*args, "-sign_other")) 263 { 264 if (args[1]) 265 { 266 args++; 267 sign_certfile = *args; 268 } 269 else badarg = 1; 270 } 271 else if (!strcmp(*args, "-verify_other")) 272 { 273 if (args[1]) 274 { 275 args++; 276 verify_certfile = *args; 277 } 278 else badarg = 1; 279 } 280 else if (!strcmp (*args, "-CAfile")) 281 { 282 if (args[1]) 283 { 284 args++; 285 CAfile = *args; 286 } 287 else badarg = 1; 288 } 289 else if (!strcmp (*args, "-CApath")) 290 { 291 if (args[1]) 292 { 293 args++; 294 CApath = *args; 295 } 296 else badarg = 1; 297 } 298 else if (!strcmp (*args, "-validity_period")) 299 { 300 if (args[1]) 301 { 302 args++; 303 nsec = atol(*args); 304 if (nsec < 0) 305 { 306 BIO_printf(bio_err, 307 "Illegal validity period %s\n", 308 *args); 309 badarg = 1; 310 } 311 } 312 else badarg = 1; 313 } 314 else if (!strcmp (*args, "-status_age")) 315 { 316 if (args[1]) 317 { 318 args++; 319 maxage = atol(*args); 320 if (maxage < 0) 321 { 322 BIO_printf(bio_err, 323 "Illegal validity age %s\n", 324 *args); 325 badarg = 1; 326 } 327 } 328 else badarg = 1; 329 } 330 else if (!strcmp(*args, "-signkey")) 331 { 332 if (args[1]) 333 { 334 args++; 335 keyfile = *args; 336 } 337 else badarg = 1; 338 } 339 else if (!strcmp(*args, "-reqout")) 340 { 341 if (args[1]) 342 { 343 args++; 344 reqout = *args; 345 } 346 else badarg = 1; 347 } 348 else if (!strcmp(*args, "-respout")) 349 { 350 if (args[1]) 351 { 352 args++; 353 respout = *args; 354 } 355 else badarg = 1; 356 } 357 else if (!strcmp(*args, "-path")) 358 { 359 if (args[1]) 360 { 361 args++; 362 path = *args; 363 } 364 else badarg = 1; 365 } 366 else if (!strcmp(*args, "-issuer")) 367 { 368 if (args[1]) 369 { 370 args++; 371 X509_free(issuer); 372 issuer = load_cert(bio_err, *args, FORMAT_PEM, 373 NULL, e, "issuer certificate"); 374 if(!issuer) goto end; 375 } 376 else badarg = 1; 377 } 378 else if (!strcmp (*args, "-cert")) 379 { 380 if (args[1]) 381 { 382 args++; 383 X509_free(cert); 384 cert = load_cert(bio_err, *args, FORMAT_PEM, 385 NULL, e, "certificate"); 386 if(!cert) goto end; 387 if(!add_ocsp_cert(&req, cert, issuer, ids)) 388 goto end; 389 if(!sk_push(reqnames, *args)) 390 goto end; 391 } 392 else badarg = 1; 393 } 394 else if (!strcmp(*args, "-serial")) 395 { 396 if (args[1]) 397 { 398 args++; 399 if(!add_ocsp_serial(&req, *args, issuer, ids)) 400 goto end; 401 if(!sk_push(reqnames, *args)) 402 goto end; 403 } 404 else badarg = 1; 405 } 406 else if (!strcmp(*args, "-index")) 407 { 408 if (args[1]) 409 { 410 args++; 411 ridx_filename = *args; 412 } 413 else badarg = 1; 414 } 415 else if (!strcmp(*args, "-CA")) 416 { 417 if (args[1]) 418 { 419 args++; 420 rca_filename = *args; 421 } 422 else badarg = 1; 423 } 424 else if (!strcmp (*args, "-nmin")) 425 { 426 if (args[1]) 427 { 428 args++; 429 nmin = atol(*args); 430 if (nmin < 0) 431 { 432 BIO_printf(bio_err, 433 "Illegal update period %s\n", 434 *args); 435 badarg = 1; 436 } 437 } 438 if (ndays == -1) 439 ndays = 0; 440 else badarg = 1; 441 } 442 else if (!strcmp (*args, "-nrequest")) 443 { 444 if (args[1]) 445 { 446 args++; 447 accept_count = atol(*args); 448 if (accept_count < 0) 449 { 450 BIO_printf(bio_err, 451 "Illegal accept count %s\n", 452 *args); 453 badarg = 1; 454 } 455 } 456 else badarg = 1; 457 } 458 else if (!strcmp (*args, "-ndays")) 459 { 460 if (args[1]) 461 { 462 args++; 463 ndays = atol(*args); 464 if (ndays < 0) 465 { 466 BIO_printf(bio_err, 467 "Illegal update period %s\n", 468 *args); 469 badarg = 1; 470 } 471 } 472 else badarg = 1; 473 } 474 else if (!strcmp(*args, "-rsigner")) 475 { 476 if (args[1]) 477 { 478 args++; 479 rsignfile = *args; 480 } 481 else badarg = 1; 482 } 483 else if (!strcmp(*args, "-rkey")) 484 { 485 if (args[1]) 486 { 487 args++; 488 rkeyfile = *args; 489 } 490 else badarg = 1; 491 } 492 else if (!strcmp(*args, "-rother")) 493 { 494 if (args[1]) 495 { 496 args++; 497 rcertfile = *args; 498 } 499 else badarg = 1; 500 } 501 else badarg = 1; 502 args++; 503 } 504 505 /* Have we anything to do? */ 506 if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1; 507 508 if (badarg) 509 { 510 BIO_printf (bio_err, "OCSP utility\n"); 511 BIO_printf (bio_err, "Usage ocsp [options]\n"); 512 BIO_printf (bio_err, "where options are\n"); 513 BIO_printf (bio_err, "-out file output filename\n"); 514 BIO_printf (bio_err, "-issuer file issuer certificate\n"); 515 BIO_printf (bio_err, "-cert file certificate to check\n"); 516 BIO_printf (bio_err, "-serial n serial number to check\n"); 517 BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n"); 518 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n"); 519 BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n"); 520 BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n"); 521 BIO_printf (bio_err, "-req_text print text form of request\n"); 522 BIO_printf (bio_err, "-resp_text print text form of response\n"); 523 BIO_printf (bio_err, "-text print text form of request and response\n"); 524 BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n"); 525 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n"); 526 BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n"); 527 BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n"); 528 BIO_printf (bio_err, "-nonce add OCSP nonce to request\n"); 529 BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n"); 530 BIO_printf (bio_err, "-url URL OCSP responder URL\n"); 531 BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n"); 532 BIO_printf (bio_err, "-path path to use in OCSP request\n"); 533 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); 534 BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); 535 BIO_printf (bio_err, "-VAfile file validator certificates file\n"); 536 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n"); 537 BIO_printf (bio_err, "-status_age n maximum status age in seconds\n"); 538 BIO_printf (bio_err, "-noverify don't verify response at all\n"); 539 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n"); 540 BIO_printf (bio_err, "-trust_other don't verify additional certificates\n"); 541 BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n"); 542 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n"); 543 BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n"); 544 BIO_printf (bio_err, "-no_chain don't chain verify response\n"); 545 BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n"); 546 BIO_printf (bio_err, "-port num port to run responder on\n"); 547 BIO_printf (bio_err, "-index file certificate status index file\n"); 548 BIO_printf (bio_err, "-CA file CA certificate\n"); 549 BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n"); 550 BIO_printf (bio_err, "-rkey file responder key to sign responses with\n"); 551 BIO_printf (bio_err, "-rother file other certificates to include in response\n"); 552 BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n"); 553 BIO_printf (bio_err, "-nmin n number of minutes before next update\n"); 554 BIO_printf (bio_err, "-ndays n number of days before next update\n"); 555 BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n"); 556 BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n"); 557 goto end; 558 } 559 560 if(outfile) out = BIO_new_file(outfile, "w"); 561 else out = BIO_new_fp(stdout, BIO_NOCLOSE); 562 563 if(!out) 564 { 565 BIO_printf(bio_err, "Error opening output file\n"); 566 goto end; 567 } 568 569 if (!req && (add_nonce != 2)) add_nonce = 0; 570 571 if (!req && reqin) 572 { 573 derbio = BIO_new_file(reqin, "rb"); 574 if (!derbio) 575 { 576 BIO_printf(bio_err, "Error Opening OCSP request file\n"); 577 goto end; 578 } 579 req = d2i_OCSP_REQUEST_bio(derbio, NULL); 580 BIO_free(derbio); 581 if(!req) 582 { 583 BIO_printf(bio_err, "Error reading OCSP request\n"); 584 goto end; 585 } 586 } 587 588 if (!req && port) 589 { 590 acbio = init_responder(port); 591 if (!acbio) 592 goto end; 593 } 594 595 if (rsignfile && !rdb) 596 { 597 if (!rkeyfile) rkeyfile = rsignfile; 598 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM, 599 NULL, e, "responder certificate"); 600 if (!rsigner) 601 { 602 BIO_printf(bio_err, "Error loading responder certificate\n"); 603 goto end; 604 } 605 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM, 606 NULL, e, "CA certificate"); 607 if (rcertfile) 608 { 609 rother = load_certs(bio_err, rcertfile, FORMAT_PEM, 610 NULL, e, "responder other certificates"); 611 if (!rother) goto end; 612 } 613 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL, 614 "responder private key"); 615 if (!rkey) 616 goto end; 617 } 618 if(acbio) 619 BIO_printf(bio_err, "Waiting for OCSP client connections...\n"); 620 621 redo_accept: 622 623 if (acbio) 624 { 625 if (!do_responder(&req, &cbio, acbio, port)) 626 goto end; 627 if (!req) 628 { 629 resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 630 send_ocsp_response(cbio, resp); 631 goto done_resp; 632 } 633 } 634 635 if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) 636 { 637 BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); 638 goto end; 639 } 640 641 if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1); 642 643 if (signfile) 644 { 645 if (!keyfile) keyfile = signfile; 646 signer = load_cert(bio_err, signfile, FORMAT_PEM, 647 NULL, e, "signer certificate"); 648 if (!signer) 649 { 650 BIO_printf(bio_err, "Error loading signer certificate\n"); 651 goto end; 652 } 653 if (sign_certfile) 654 { 655 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM, 656 NULL, e, "signer certificates"); 657 if (!sign_other) goto end; 658 } 659 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL, 660 "signer private key"); 661 if (!key) 662 goto end; 663 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags)) 664 { 665 BIO_printf(bio_err, "Error signing OCSP request\n"); 666 goto end; 667 } 668 } 669 670 if (req_text && req) OCSP_REQUEST_print(out, req, 0); 671 672 if (reqout) 673 { 674 derbio = BIO_new_file(reqout, "wb"); 675 if(!derbio) 676 { 677 BIO_printf(bio_err, "Error opening file %s\n", reqout); 678 goto end; 679 } 680 i2d_OCSP_REQUEST_bio(derbio, req); 681 BIO_free(derbio); 682 } 683 684 if (ridx_filename && (!rkey || !rsigner || !rca_cert)) 685 { 686 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n"); 687 goto end; 688 } 689 690 if (ridx_filename && !rdb) 691 { 692 rdb = load_index(ridx_filename, NULL); 693 if (!rdb) goto end; 694 if (!index_index(rdb)) goto end; 695 } 696 697 if (rdb) 698 { 699 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays); 700 if (cbio) 701 send_ocsp_response(cbio, resp); 702 } 703 else if (host) 704 { 705#ifndef OPENSSL_NO_SOCK 706 cbio = BIO_new_connect(host); 707#else 708 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n"); 709 goto end; 710#endif 711 if (!cbio) 712 { 713 BIO_printf(bio_err, "Error creating connect BIO\n"); 714 goto end; 715 } 716 if (port) BIO_set_conn_port(cbio, port); 717 if (use_ssl == 1) 718 { 719 BIO *sbio; 720#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3) 721 ctx = SSL_CTX_new(SSLv23_client_method()); 722#elif !defined(OPENSSL_NO_SSL3) 723 ctx = SSL_CTX_new(SSLv3_client_method()); 724#elif !defined(OPENSSL_NO_SSL2) 725 ctx = SSL_CTX_new(SSLv2_client_method()); 726#else 727 BIO_printf(bio_err, "SSL is disabled\n"); 728 goto end; 729#endif 730 if (ctx == NULL) 731 { 732 BIO_printf(bio_err, "Error creating SSL context.\n"); 733 goto end; 734 } 735 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); 736 sbio = BIO_new_ssl(ctx, 1); 737 cbio = BIO_push(sbio, cbio); 738 } 739 if (BIO_do_connect(cbio) <= 0) 740 { 741 BIO_printf(bio_err, "Error connecting BIO\n"); 742 goto end; 743 } 744 resp = OCSP_sendreq_bio(cbio, path, req); 745 BIO_free_all(cbio); 746 cbio = NULL; 747 if (!resp) 748 { 749 BIO_printf(bio_err, "Error querying OCSP responsder\n"); 750 goto end; 751 } 752 } 753 else if (respin) 754 { 755 derbio = BIO_new_file(respin, "rb"); 756 if (!derbio) 757 { 758 BIO_printf(bio_err, "Error Opening OCSP response file\n"); 759 goto end; 760 } 761 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); 762 BIO_free(derbio); 763 if(!resp) 764 { 765 BIO_printf(bio_err, "Error reading OCSP response\n"); 766 goto end; 767 } 768 769 } 770 else 771 { 772 ret = 0; 773 goto end; 774 } 775 776 done_resp: 777 778 if (respout) 779 { 780 derbio = BIO_new_file(respout, "wb"); 781 if(!derbio) 782 { 783 BIO_printf(bio_err, "Error opening file %s\n", respout); 784 goto end; 785 } 786 i2d_OCSP_RESPONSE_bio(derbio, resp); 787 BIO_free(derbio); 788 } 789 790 i = OCSP_response_status(resp); 791 792 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) 793 { 794 BIO_printf(out, "Responder Error: %s (%d)\n", 795 OCSP_response_status_str(i), i); 796 if (ignore_err) 797 goto redo_accept; 798 ret = 0; 799 goto end; 800 } 801 802 if (resp_text) OCSP_RESPONSE_print(out, resp, 0); 803 804 /* If running as responder don't verify our own response */ 805 if (cbio) 806 { 807 if (accept_count > 0) 808 accept_count--; 809 /* Redo if more connections needed */ 810 if (accept_count) 811 { 812 BIO_free_all(cbio); 813 cbio = NULL; 814 OCSP_REQUEST_free(req); 815 req = NULL; 816 OCSP_RESPONSE_free(resp); 817 resp = NULL; 818 goto redo_accept; 819 } 820 goto end; 821 } 822 823 if (!store) 824 store = setup_verify(bio_err, CAfile, CApath); 825 if (!store) 826 goto end; 827 if (verify_certfile) 828 { 829 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM, 830 NULL, e, "validator certificate"); 831 if (!verify_other) goto end; 832 } 833 834 bs = OCSP_response_get1_basic(resp); 835 836 if (!bs) 837 { 838 BIO_printf(bio_err, "Error parsing response\n"); 839 goto end; 840 } 841 842 if (!noverify) 843 { 844 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) 845 { 846 if (i == -1) 847 BIO_printf(bio_err, "WARNING: no nonce in response\n"); 848 else 849 { 850 BIO_printf(bio_err, "Nonce Verify error\n"); 851 goto end; 852 } 853 } 854 855 i = OCSP_basic_verify(bs, verify_other, store, verify_flags); 856 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0); 857 858 if(i <= 0) 859 { 860 BIO_printf(bio_err, "Response Verify Failure\n"); 861 ERR_print_errors(bio_err); 862 } 863 else 864 BIO_printf(bio_err, "Response verify OK\n"); 865 866 } 867 868 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage)) 869 goto end; 870 871 ret = 0; 872 873end: 874 ERR_print_errors(bio_err); 875 X509_free(signer); 876 X509_STORE_free(store); 877 EVP_PKEY_free(key); 878 EVP_PKEY_free(rkey); 879 X509_free(issuer); 880 X509_free(cert); 881 X509_free(rsigner); 882 X509_free(rca_cert); 883 free_index(rdb); 884 BIO_free_all(cbio); 885 BIO_free_all(acbio); 886 BIO_free(out); 887 OCSP_REQUEST_free(req); 888 OCSP_RESPONSE_free(resp); 889 OCSP_BASICRESP_free(bs); 890 sk_free(reqnames); 891 sk_OCSP_CERTID_free(ids); 892 sk_X509_pop_free(sign_other, X509_free); 893 sk_X509_pop_free(verify_other, X509_free); 894 895 if (use_ssl != -1) 896 { 897 OPENSSL_free(host); 898 OPENSSL_free(port); 899 OPENSSL_free(path); 900 SSL_CTX_free(ctx); 901 } 902 903 OPENSSL_EXIT(ret); 904} 905 906static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 907 STACK_OF(OCSP_CERTID) *ids) 908 { 909 OCSP_CERTID *id; 910 if(!issuer) 911 { 912 BIO_printf(bio_err, "No issuer certificate specified\n"); 913 return 0; 914 } 915 if(!*req) *req = OCSP_REQUEST_new(); 916 if(!*req) goto err; 917 id = OCSP_cert_to_id(NULL, cert, issuer); 918 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 919 if(!OCSP_request_add0_id(*req, id)) goto err; 920 return 1; 921 922 err: 923 BIO_printf(bio_err, "Error Creating OCSP request\n"); 924 return 0; 925 } 926 927static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 928 STACK_OF(OCSP_CERTID) *ids) 929 { 930 OCSP_CERTID *id; 931 X509_NAME *iname; 932 ASN1_BIT_STRING *ikey; 933 ASN1_INTEGER *sno; 934 if(!issuer) 935 { 936 BIO_printf(bio_err, "No issuer certificate specified\n"); 937 return 0; 938 } 939 if(!*req) *req = OCSP_REQUEST_new(); 940 if(!*req) goto err; 941 iname = X509_get_subject_name(issuer); 942 ikey = X509_get0_pubkey_bitstr(issuer); 943 sno = s2i_ASN1_INTEGER(NULL, serial); 944 if(!sno) 945 { 946 BIO_printf(bio_err, "Error converting serial number %s\n", serial); 947 return 0; 948 } 949 id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno); 950 ASN1_INTEGER_free(sno); 951 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 952 if(!OCSP_request_add0_id(*req, id)) goto err; 953 return 1; 954 955 err: 956 BIO_printf(bio_err, "Error Creating OCSP request\n"); 957 return 0; 958 } 959 960static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 961 STACK *names, STACK_OF(OCSP_CERTID) *ids, 962 long nsec, long maxage) 963 { 964 OCSP_CERTID *id; 965 char *name; 966 int i; 967 968 int status, reason; 969 970 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; 971 972 if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids)) 973 return 1; 974 975 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) 976 { 977 id = sk_OCSP_CERTID_value(ids, i); 978 name = sk_value(names, i); 979 BIO_printf(out, "%s: ", name); 980 981 if(!OCSP_resp_find_status(bs, id, &status, &reason, 982 &rev, &thisupd, &nextupd)) 983 { 984 BIO_puts(out, "ERROR: No Status found.\n"); 985 continue; 986 } 987 988 /* Check validity: if invalid write to output BIO so we 989 * know which response this refers to. 990 */ 991 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) 992 { 993 BIO_puts(out, "WARNING: Status times invalid.\n"); 994 ERR_print_errors(out); 995 } 996 BIO_printf(out, "%s\n", OCSP_cert_status_str(status)); 997 998 BIO_puts(out, "\tThis Update: "); 999 ASN1_GENERALIZEDTIME_print(out, thisupd); 1000 BIO_puts(out, "\n"); 1001 1002 if(nextupd) 1003 { 1004 BIO_puts(out, "\tNext Update: "); 1005 ASN1_GENERALIZEDTIME_print(out, nextupd); 1006 BIO_puts(out, "\n"); 1007 } 1008 1009 if (status != V_OCSP_CERTSTATUS_REVOKED) 1010 continue; 1011 1012 if (reason != -1) 1013 BIO_printf(out, "\tReason: %s\n", 1014 OCSP_crl_reason_str(reason)); 1015 1016 BIO_puts(out, "\tRevocation Time: "); 1017 ASN1_GENERALIZEDTIME_print(out, rev); 1018 BIO_puts(out, "\n"); 1019 } 1020 1021 return 1; 1022 } 1023 1024 1025static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, 1026 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 1027 STACK_OF(X509) *rother, unsigned long flags, 1028 int nmin, int ndays) 1029 { 1030 ASN1_TIME *thisupd = NULL, *nextupd = NULL; 1031 OCSP_CERTID *cid, *ca_id = NULL; 1032 OCSP_BASICRESP *bs = NULL; 1033 int i, id_count, ret = 1; 1034 1035 1036 id_count = OCSP_request_onereq_count(req); 1037 1038 if (id_count <= 0) 1039 { 1040 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 1041 goto end; 1042 } 1043 1044 ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca); 1045 1046 bs = OCSP_BASICRESP_new(); 1047 thisupd = X509_gmtime_adj(NULL, 0); 1048 if (ndays != -1) 1049 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 ); 1050 1051 /* Examine each certificate id in the request */ 1052 for (i = 0; i < id_count; i++) 1053 { 1054 OCSP_ONEREQ *one; 1055 ASN1_INTEGER *serial; 1056 char **inf; 1057 one = OCSP_request_onereq_get0(req, i); 1058 cid = OCSP_onereq_get0_id(one); 1059 /* Is this request about our CA? */ 1060 if (OCSP_id_issuer_cmp(ca_id, cid)) 1061 { 1062 OCSP_basic_add1_status(bs, cid, 1063 V_OCSP_CERTSTATUS_UNKNOWN, 1064 0, NULL, 1065 thisupd, nextupd); 1066 continue; 1067 } 1068 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid); 1069 inf = lookup_serial(db, serial); 1070 if (!inf) 1071 OCSP_basic_add1_status(bs, cid, 1072 V_OCSP_CERTSTATUS_UNKNOWN, 1073 0, NULL, 1074 thisupd, nextupd); 1075 else if (inf[DB_type][0] == DB_TYPE_VAL) 1076 OCSP_basic_add1_status(bs, cid, 1077 V_OCSP_CERTSTATUS_GOOD, 1078 0, NULL, 1079 thisupd, nextupd); 1080 else if (inf[DB_type][0] == DB_TYPE_REV) 1081 { 1082 ASN1_OBJECT *inst = NULL; 1083 ASN1_TIME *revtm = NULL; 1084 ASN1_GENERALIZEDTIME *invtm = NULL; 1085 OCSP_SINGLERESP *single; 1086 int reason = -1; 1087 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]); 1088 single = OCSP_basic_add1_status(bs, cid, 1089 V_OCSP_CERTSTATUS_REVOKED, 1090 reason, revtm, 1091 thisupd, nextupd); 1092 if (invtm) 1093 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0); 1094 else if (inst) 1095 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0); 1096 ASN1_OBJECT_free(inst); 1097 ASN1_TIME_free(revtm); 1098 ASN1_GENERALIZEDTIME_free(invtm); 1099 } 1100 } 1101 1102 OCSP_copy_nonce(bs, req); 1103 1104 OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags); 1105 1106 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); 1107 1108 end: 1109 ASN1_TIME_free(thisupd); 1110 ASN1_TIME_free(nextupd); 1111 OCSP_CERTID_free(ca_id); 1112 OCSP_BASICRESP_free(bs); 1113 return ret; 1114 1115 } 1116 1117static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser) 1118 { 1119 int i; 1120 BIGNUM *bn = NULL; 1121 char *itmp, *row[DB_NUMBER],**rrow; 1122 for (i = 0; i < DB_NUMBER; i++) row[i] = NULL; 1123 bn = ASN1_INTEGER_to_BN(ser,NULL); 1124 if (BN_is_zero(bn)) 1125 itmp = BUF_strdup("00"); 1126 else 1127 itmp = BN_bn2hex(bn); 1128 row[DB_serial] = itmp; 1129 BN_free(bn); 1130 rrow=TXT_DB_get_by_index(db->db,DB_serial,row); 1131 OPENSSL_free(itmp); 1132 return rrow; 1133 } 1134 1135/* Quick and dirty OCSP server: read in and parse input request */ 1136 1137static BIO *init_responder(char *port) 1138 { 1139 BIO *acbio = NULL, *bufbio = NULL; 1140 bufbio = BIO_new(BIO_f_buffer()); 1141 if (!bufbio) 1142 goto err; 1143#ifndef OPENSSL_NO_SOCK 1144 acbio = BIO_new_accept(port); 1145#else 1146 BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n"); 1147#endif 1148 if (!acbio) 1149 goto err; 1150 BIO_set_accept_bios(acbio, bufbio); 1151 bufbio = NULL; 1152 1153 if (BIO_do_accept(acbio) <= 0) 1154 { 1155 BIO_printf(bio_err, "Error setting up accept BIO\n"); 1156 ERR_print_errors(bio_err); 1157 goto err; 1158 } 1159 1160 return acbio; 1161 1162 err: 1163 BIO_free_all(acbio); 1164 BIO_free(bufbio); 1165 return NULL; 1166 } 1167 1168static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port) 1169 { 1170 int have_post = 0, len; 1171 OCSP_REQUEST *req = NULL; 1172 char inbuf[1024]; 1173 BIO *cbio = NULL; 1174 1175 if (BIO_do_accept(acbio) <= 0) 1176 { 1177 BIO_printf(bio_err, "Error accepting connection\n"); 1178 ERR_print_errors(bio_err); 1179 return 0; 1180 } 1181 1182 cbio = BIO_pop(acbio); 1183 *pcbio = cbio; 1184 1185 for(;;) 1186 { 1187 len = BIO_gets(cbio, inbuf, sizeof inbuf); 1188 if (len <= 0) 1189 return 1; 1190 /* Look for "POST" signalling start of query */ 1191 if (!have_post) 1192 { 1193 if(strncmp(inbuf, "POST", 4)) 1194 { 1195 BIO_printf(bio_err, "Invalid request\n"); 1196 return 1; 1197 } 1198 have_post = 1; 1199 } 1200 /* Look for end of headers */ 1201 if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) 1202 break; 1203 } 1204 1205 /* Try to read OCSP request */ 1206 1207 req = d2i_OCSP_REQUEST_bio(cbio, NULL); 1208 1209 if (!req) 1210 { 1211 BIO_printf(bio_err, "Error parsing OCSP request\n"); 1212 ERR_print_errors(bio_err); 1213 } 1214 1215 *preq = req; 1216 1217 return 1; 1218 1219 } 1220 1221static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp) 1222 { 1223 char http_resp[] = 1224 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n" 1225 "Content-Length: %d\r\n\r\n"; 1226 if (!cbio) 1227 return 0; 1228 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); 1229 i2d_OCSP_RESPONSE_bio(cbio, resp); 1230 BIO_flush(cbio); 1231 return 1; 1232 } 1233 1234#endif 1235