1 /* ocsp.c */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) 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 #define USE_SOCKETS 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include "apps.h" /* needs to be included before the openssl headers! */ 64 #include <openssl/e_os2.h> 65 #include <openssl/ssl.h> 66 #include <openssl/err.h> 67 68 /* Maximum leeway in validity period: default 5 minutes */ 69 #define MAX_VALIDITY_PERIOD (5 * 60) 70 71 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 72 STACK_OF(OCSP_CERTID) *ids); 73 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 74 STACK_OF(OCSP_CERTID) *ids); 75 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 76 STACK *names, STACK_OF(OCSP_CERTID) *ids, 77 long nsec, long maxage); 78 79 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, 80 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 81 STACK_OF(X509) *rother, unsigned long flags, 82 int nmin, int ndays); 83 84 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser); 85 static BIO *init_responder(char *port); 86 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port); 87 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); 88 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, 89 OCSP_REQUEST *req, int req_timeout); 90 91 #undef PROG 92 #define PROG ocsp_main 93 94 int MAIN(int, char **); 95 96 int MAIN(int argc, char **argv) 97 { 98 ENGINE *e = NULL; 99 char **args; 100 char *host = NULL, *port = NULL, *path = "/"; 101 char *reqin = NULL, *respin = NULL; 102 char *reqout = NULL, *respout = NULL; 103 char *signfile = NULL, *keyfile = NULL; 104 char *rsignfile = NULL, *rkeyfile = NULL; 105 char *outfile = NULL; 106 int add_nonce = 1, noverify = 0, use_ssl = -1; 107 OCSP_REQUEST *req = NULL; 108 OCSP_RESPONSE *resp = NULL; 109 OCSP_BASICRESP *bs = NULL; 110 X509 *issuer = NULL, *cert = NULL; 111 X509 *signer = NULL, *rsigner = NULL; 112 EVP_PKEY *key = NULL, *rkey = NULL; 113 BIO *acbio = NULL, *cbio = NULL; 114 BIO *derbio = NULL; 115 BIO *out = NULL; 116 int req_timeout = -1; 117 int req_text = 0, resp_text = 0; 118 long nsec = MAX_VALIDITY_PERIOD, maxage = -1; 119 char *CAfile = NULL, *CApath = NULL; 120 X509_STORE *store = NULL; 121 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; 122 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; 123 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; 124 int ret = 1; 125 int accept_count = -1; 126 int badarg = 0; 127 int i; 128 int ignore_err = 0; 129 STACK *reqnames = NULL; 130 STACK_OF(OCSP_CERTID) *ids = NULL; 131 132 X509 *rca_cert = NULL; 133 char *ridx_filename = NULL; 134 char *rca_filename = NULL; 135 CA_DB *rdb = NULL; 136 int nmin = 0, ndays = -1; 137 138 if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); 139 140 if (!load_config(bio_err, NULL)) 141 goto end; 142 SSL_load_error_strings(); 143 OpenSSL_add_ssl_algorithms(); 144 args = argv + 1; 145 reqnames = sk_new_null(); 146 ids = sk_OCSP_CERTID_new_null(); 147 while (!badarg && *args && *args[0] == '-') 148 { 149 if (!strcmp(*args, "-out")) 150 { 151 if (args[1]) 152 { 153 args++; 154 outfile = *args; 155 } 156 else badarg = 1; 157 } 158 else if (!strcmp(*args, "-timeout")) 159 { 160 if (args[1]) 161 { 162 args++; 163 req_timeout = atol(*args); 164 if (req_timeout < 0) 165 { 166 BIO_printf(bio_err, 167 "Illegal timeout value %s\n", 168 *args); 169 badarg = 1; 170 } 171 } 172 else badarg = 1; 173 } 174 else if (!strcmp(*args, "-url")) 175 { 176 if (args[1]) 177 { 178 args++; 179 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) 180 { 181 BIO_printf(bio_err, "Error parsing URL\n"); 182 badarg = 1; 183 } 184 } 185 else badarg = 1; 186 } 187 else if (!strcmp(*args, "-host")) 188 { 189 if (args[1]) 190 { 191 args++; 192 host = *args; 193 } 194 else badarg = 1; 195 } 196 else if (!strcmp(*args, "-port")) 197 { 198 if (args[1]) 199 { 200 args++; 201 port = *args; 202 } 203 else badarg = 1; 204 } 205 else if (!strcmp(*args, "-ignore_err")) 206 ignore_err = 1; 207 else if (!strcmp(*args, "-noverify")) 208 noverify = 1; 209 else if (!strcmp(*args, "-nonce")) 210 add_nonce = 2; 211 else if (!strcmp(*args, "-no_nonce")) 212 add_nonce = 0; 213 else if (!strcmp(*args, "-resp_no_certs")) 214 rflags |= OCSP_NOCERTS; 215 else if (!strcmp(*args, "-resp_key_id")) 216 rflags |= OCSP_RESPID_KEY; 217 else if (!strcmp(*args, "-no_certs")) 218 sign_flags |= OCSP_NOCERTS; 219 else if (!strcmp(*args, "-no_signature_verify")) 220 verify_flags |= OCSP_NOSIGS; 221 else if (!strcmp(*args, "-no_cert_verify")) 222 verify_flags |= OCSP_NOVERIFY; 223 else if (!strcmp(*args, "-no_chain")) 224 verify_flags |= OCSP_NOCHAIN; 225 else if (!strcmp(*args, "-no_cert_checks")) 226 verify_flags |= OCSP_NOCHECKS; 227 else if (!strcmp(*args, "-no_explicit")) 228 verify_flags |= OCSP_NOEXPLICIT; 229 else if (!strcmp(*args, "-trust_other")) 230 verify_flags |= OCSP_TRUSTOTHER; 231 else if (!strcmp(*args, "-no_intern")) 232 verify_flags |= OCSP_NOINTERN; 233 else if (!strcmp(*args, "-text")) 234 { 235 req_text = 1; 236 resp_text = 1; 237 } 238 else if (!strcmp(*args, "-req_text")) 239 req_text = 1; 240 else if (!strcmp(*args, "-resp_text")) 241 resp_text = 1; 242 else if (!strcmp(*args, "-reqin")) 243 { 244 if (args[1]) 245 { 246 args++; 247 reqin = *args; 248 } 249 else badarg = 1; 250 } 251 else if (!strcmp(*args, "-respin")) 252 { 253 if (args[1]) 254 { 255 args++; 256 respin = *args; 257 } 258 else badarg = 1; 259 } 260 else if (!strcmp(*args, "-signer")) 261 { 262 if (args[1]) 263 { 264 args++; 265 signfile = *args; 266 } 267 else badarg = 1; 268 } 269 else if (!strcmp (*args, "-VAfile")) 270 { 271 if (args[1]) 272 { 273 args++; 274 verify_certfile = *args; 275 verify_flags |= OCSP_TRUSTOTHER; 276 } 277 else badarg = 1; 278 } 279 else if (!strcmp(*args, "-sign_other")) 280 { 281 if (args[1]) 282 { 283 args++; 284 sign_certfile = *args; 285 } 286 else badarg = 1; 287 } 288 else if (!strcmp(*args, "-verify_other")) 289 { 290 if (args[1]) 291 { 292 args++; 293 verify_certfile = *args; 294 } 295 else badarg = 1; 296 } 297 else if (!strcmp (*args, "-CAfile")) 298 { 299 if (args[1]) 300 { 301 args++; 302 CAfile = *args; 303 } 304 else badarg = 1; 305 } 306 else if (!strcmp (*args, "-CApath")) 307 { 308 if (args[1]) 309 { 310 args++; 311 CApath = *args; 312 } 313 else badarg = 1; 314 } 315 else if (!strcmp (*args, "-validity_period")) 316 { 317 if (args[1]) 318 { 319 args++; 320 nsec = atol(*args); 321 if (nsec < 0) 322 { 323 BIO_printf(bio_err, 324 "Illegal validity period %s\n", 325 *args); 326 badarg = 1; 327 } 328 } 329 else badarg = 1; 330 } 331 else if (!strcmp (*args, "-status_age")) 332 { 333 if (args[1]) 334 { 335 args++; 336 maxage = atol(*args); 337 if (maxage < 0) 338 { 339 BIO_printf(bio_err, 340 "Illegal validity age %s\n", 341 *args); 342 badarg = 1; 343 } 344 } 345 else badarg = 1; 346 } 347 else if (!strcmp(*args, "-signkey")) 348 { 349 if (args[1]) 350 { 351 args++; 352 keyfile = *args; 353 } 354 else badarg = 1; 355 } 356 else if (!strcmp(*args, "-reqout")) 357 { 358 if (args[1]) 359 { 360 args++; 361 reqout = *args; 362 } 363 else badarg = 1; 364 } 365 else if (!strcmp(*args, "-respout")) 366 { 367 if (args[1]) 368 { 369 args++; 370 respout = *args; 371 } 372 else badarg = 1; 373 } 374 else if (!strcmp(*args, "-path")) 375 { 376 if (args[1]) 377 { 378 args++; 379 path = *args; 380 } 381 else badarg = 1; 382 } 383 else if (!strcmp(*args, "-issuer")) 384 { 385 if (args[1]) 386 { 387 args++; 388 X509_free(issuer); 389 issuer = load_cert(bio_err, *args, FORMAT_PEM, 390 NULL, e, "issuer certificate"); 391 if(!issuer) goto end; 392 } 393 else badarg = 1; 394 } 395 else if (!strcmp (*args, "-cert")) 396 { 397 if (args[1]) 398 { 399 args++; 400 X509_free(cert); 401 cert = load_cert(bio_err, *args, FORMAT_PEM, 402 NULL, e, "certificate"); 403 if(!cert) goto end; 404 if(!add_ocsp_cert(&req, cert, issuer, ids)) 405 goto end; 406 if(!sk_push(reqnames, *args)) 407 goto end; 408 } 409 else badarg = 1; 410 } 411 else if (!strcmp(*args, "-serial")) 412 { 413 if (args[1]) 414 { 415 args++; 416 if(!add_ocsp_serial(&req, *args, issuer, ids)) 417 goto end; 418 if(!sk_push(reqnames, *args)) 419 goto end; 420 } 421 else badarg = 1; 422 } 423 else if (!strcmp(*args, "-index")) 424 { 425 if (args[1]) 426 { 427 args++; 428 ridx_filename = *args; 429 } 430 else badarg = 1; 431 } 432 else if (!strcmp(*args, "-CA")) 433 { 434 if (args[1]) 435 { 436 args++; 437 rca_filename = *args; 438 } 439 else badarg = 1; 440 } 441 else if (!strcmp (*args, "-nmin")) 442 { 443 if (args[1]) 444 { 445 args++; 446 nmin = atol(*args); 447 if (nmin < 0) 448 { 449 BIO_printf(bio_err, 450 "Illegal update period %s\n", 451 *args); 452 badarg = 1; 453 } 454 } 455 if (ndays == -1) 456 ndays = 0; 457 else badarg = 1; 458 } 459 else if (!strcmp (*args, "-nrequest")) 460 { 461 if (args[1]) 462 { 463 args++; 464 accept_count = atol(*args); 465 if (accept_count < 0) 466 { 467 BIO_printf(bio_err, 468 "Illegal accept count %s\n", 469 *args); 470 badarg = 1; 471 } 472 } 473 else badarg = 1; 474 } 475 else if (!strcmp (*args, "-ndays")) 476 { 477 if (args[1]) 478 { 479 args++; 480 ndays = atol(*args); 481 if (ndays < 0) 482 { 483 BIO_printf(bio_err, 484 "Illegal update period %s\n", 485 *args); 486 badarg = 1; 487 } 488 } 489 else badarg = 1; 490 } 491 else if (!strcmp(*args, "-rsigner")) 492 { 493 if (args[1]) 494 { 495 args++; 496 rsignfile = *args; 497 } 498 else badarg = 1; 499 } 500 else if (!strcmp(*args, "-rkey")) 501 { 502 if (args[1]) 503 { 504 args++; 505 rkeyfile = *args; 506 } 507 else badarg = 1; 508 } 509 else if (!strcmp(*args, "-rother")) 510 { 511 if (args[1]) 512 { 513 args++; 514 rcertfile = *args; 515 } 516 else badarg = 1; 517 } 518 else badarg = 1; 519 args++; 520 } 521 522 /* Have we anything to do? */ 523 if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1; 524 525 if (badarg) 526 { 527 BIO_printf (bio_err, "OCSP utility\n"); 528 BIO_printf (bio_err, "Usage ocsp [options]\n"); 529 BIO_printf (bio_err, "where options are\n"); 530 BIO_printf (bio_err, "-out file output filename\n"); 531 BIO_printf (bio_err, "-issuer file issuer certificate\n"); 532 BIO_printf (bio_err, "-cert file certificate to check\n"); 533 BIO_printf (bio_err, "-serial n serial number to check\n"); 534 BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n"); 535 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n"); 536 BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n"); 537 BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n"); 538 BIO_printf (bio_err, "-req_text print text form of request\n"); 539 BIO_printf (bio_err, "-resp_text print text form of response\n"); 540 BIO_printf (bio_err, "-text print text form of request and response\n"); 541 BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n"); 542 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n"); 543 BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n"); 544 BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n"); 545 BIO_printf (bio_err, "-nonce add OCSP nonce to request\n"); 546 BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n"); 547 BIO_printf (bio_err, "-url URL OCSP responder URL\n"); 548 BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n"); 549 BIO_printf (bio_err, "-path path to use in OCSP request\n"); 550 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); 551 BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); 552 BIO_printf (bio_err, "-VAfile file validator certificates file\n"); 553 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n"); 554 BIO_printf (bio_err, "-status_age n maximum status age in seconds\n"); 555 BIO_printf (bio_err, "-noverify don't verify response at all\n"); 556 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n"); 557 BIO_printf (bio_err, "-trust_other don't verify additional certificates\n"); 558 BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n"); 559 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n"); 560 BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n"); 561 BIO_printf (bio_err, "-no_chain don't chain verify response\n"); 562 BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n"); 563 BIO_printf (bio_err, "-port num port to run responder on\n"); 564 BIO_printf (bio_err, "-index file certificate status index file\n"); 565 BIO_printf (bio_err, "-CA file CA certificate\n"); 566 BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n"); 567 BIO_printf (bio_err, "-rkey file responder key to sign responses with\n"); 568 BIO_printf (bio_err, "-rother file other certificates to include in response\n"); 569 BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n"); 570 BIO_printf (bio_err, "-nmin n number of minutes before next update\n"); 571 BIO_printf (bio_err, "-ndays n number of days before next update\n"); 572 BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n"); 573 BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n"); 574 goto end; 575 } 576 577 if(outfile) out = BIO_new_file(outfile, "w"); 578 else out = BIO_new_fp(stdout, BIO_NOCLOSE); 579 580 if(!out) 581 { 582 BIO_printf(bio_err, "Error opening output file\n"); 583 goto end; 584 } 585 586 if (!req && (add_nonce != 2)) add_nonce = 0; 587 588 if (!req && reqin) 589 { 590 derbio = BIO_new_file(reqin, "rb"); 591 if (!derbio) 592 { 593 BIO_printf(bio_err, "Error Opening OCSP request file\n"); 594 goto end; 595 } 596 req = d2i_OCSP_REQUEST_bio(derbio, NULL); 597 BIO_free(derbio); 598 if(!req) 599 { 600 BIO_printf(bio_err, "Error reading OCSP request\n"); 601 goto end; 602 } 603 } 604 605 if (!req && port) 606 { 607 acbio = init_responder(port); 608 if (!acbio) 609 goto end; 610 } 611 612 if (rsignfile && !rdb) 613 { 614 if (!rkeyfile) rkeyfile = rsignfile; 615 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM, 616 NULL, e, "responder certificate"); 617 if (!rsigner) 618 { 619 BIO_printf(bio_err, "Error loading responder certificate\n"); 620 goto end; 621 } 622 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM, 623 NULL, e, "CA certificate"); 624 if (rcertfile) 625 { 626 rother = load_certs(bio_err, rcertfile, FORMAT_PEM, 627 NULL, e, "responder other certificates"); 628 if (!rother) goto end; 629 } 630 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL, 631 "responder private key"); 632 if (!rkey) 633 goto end; 634 } 635 if(acbio) 636 BIO_printf(bio_err, "Waiting for OCSP client connections...\n"); 637 638 redo_accept: 639 640 if (acbio) 641 { 642 if (!do_responder(&req, &cbio, acbio, port)) 643 goto end; 644 if (!req) 645 { 646 resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 647 send_ocsp_response(cbio, resp); 648 goto done_resp; 649 } 650 } 651 652 if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) 653 { 654 BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); 655 goto end; 656 } 657 658 if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1); 659 660 if (signfile) 661 { 662 if (!keyfile) keyfile = signfile; 663 signer = load_cert(bio_err, signfile, FORMAT_PEM, 664 NULL, e, "signer certificate"); 665 if (!signer) 666 { 667 BIO_printf(bio_err, "Error loading signer certificate\n"); 668 goto end; 669 } 670 if (sign_certfile) 671 { 672 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM, 673 NULL, e, "signer certificates"); 674 if (!sign_other) goto end; 675 } 676 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL, 677 "signer private key"); 678 if (!key) 679 goto end; 680 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags)) 681 { 682 BIO_printf(bio_err, "Error signing OCSP request\n"); 683 goto end; 684 } 685 } 686 687 if (req_text && req) OCSP_REQUEST_print(out, req, 0); 688 689 if (reqout) 690 { 691 derbio = BIO_new_file(reqout, "wb"); 692 if(!derbio) 693 { 694 BIO_printf(bio_err, "Error opening file %s\n", reqout); 695 goto end; 696 } 697 i2d_OCSP_REQUEST_bio(derbio, req); 698 BIO_free(derbio); 699 } 700 701 if (ridx_filename && (!rkey || !rsigner || !rca_cert)) 702 { 703 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n"); 704 goto end; 705 } 706 707 if (ridx_filename && !rdb) 708 { 709 rdb = load_index(ridx_filename, NULL); 710 if (!rdb) goto end; 711 if (!index_index(rdb)) goto end; 712 } 713 714 if (rdb) 715 { 716 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays); 717 if (cbio) 718 send_ocsp_response(cbio, resp); 719 } 720 else if (host) 721 { 722 #ifndef OPENSSL_NO_SOCK 723 resp = process_responder(bio_err, req, host, path, 724 port, use_ssl, req_timeout); 725 if (!resp) 726 goto end; 727 #else 728 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n"); 729 goto end; 730 #endif 731 } 732 else if (respin) 733 { 734 derbio = BIO_new_file(respin, "rb"); 735 if (!derbio) 736 { 737 BIO_printf(bio_err, "Error Opening OCSP response file\n"); 738 goto end; 739 } 740 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); 741 BIO_free(derbio); 742 if(!resp) 743 { 744 BIO_printf(bio_err, "Error reading OCSP response\n"); 745 goto end; 746 } 747 748 } 749 else 750 { 751 ret = 0; 752 goto end; 753 } 754 755 done_resp: 756 757 if (respout) 758 { 759 derbio = BIO_new_file(respout, "wb"); 760 if(!derbio) 761 { 762 BIO_printf(bio_err, "Error opening file %s\n", respout); 763 goto end; 764 } 765 i2d_OCSP_RESPONSE_bio(derbio, resp); 766 BIO_free(derbio); 767 } 768 769 i = OCSP_response_status(resp); 770 771 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) 772 { 773 BIO_printf(out, "Responder Error: %s (%d)\n", 774 OCSP_response_status_str(i), i); 775 if (ignore_err) 776 goto redo_accept; 777 ret = 0; 778 goto end; 779 } 780 781 if (resp_text) OCSP_RESPONSE_print(out, resp, 0); 782 783 /* If running as responder don't verify our own response */ 784 if (cbio) 785 { 786 if (accept_count > 0) 787 accept_count--; 788 /* Redo if more connections needed */ 789 if (accept_count) 790 { 791 BIO_free_all(cbio); 792 cbio = NULL; 793 OCSP_REQUEST_free(req); 794 req = NULL; 795 OCSP_RESPONSE_free(resp); 796 resp = NULL; 797 goto redo_accept; 798 } 799 goto end; 800 } 801 802 if (!store) 803 store = setup_verify(bio_err, CAfile, CApath); 804 if (!store) 805 goto end; 806 if (verify_certfile) 807 { 808 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM, 809 NULL, e, "validator certificate"); 810 if (!verify_other) goto end; 811 } 812 813 bs = OCSP_response_get1_basic(resp); 814 815 if (!bs) 816 { 817 BIO_printf(bio_err, "Error parsing response\n"); 818 goto end; 819 } 820 821 if (!noverify) 822 { 823 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) 824 { 825 if (i == -1) 826 BIO_printf(bio_err, "WARNING: no nonce in response\n"); 827 else 828 { 829 BIO_printf(bio_err, "Nonce Verify error\n"); 830 goto end; 831 } 832 } 833 834 i = OCSP_basic_verify(bs, verify_other, store, verify_flags); 835 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0); 836 837 if(i <= 0) 838 { 839 BIO_printf(bio_err, "Response Verify Failure\n"); 840 ERR_print_errors(bio_err); 841 } 842 else 843 BIO_printf(bio_err, "Response verify OK\n"); 844 845 } 846 847 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage)) 848 goto end; 849 850 ret = 0; 851 852 end: 853 ERR_print_errors(bio_err); 854 X509_free(signer); 855 X509_STORE_free(store); 856 EVP_PKEY_free(key); 857 EVP_PKEY_free(rkey); 858 X509_free(issuer); 859 X509_free(cert); 860 X509_free(rsigner); 861 X509_free(rca_cert); 862 free_index(rdb); 863 BIO_free_all(cbio); 864 BIO_free_all(acbio); 865 BIO_free(out); 866 OCSP_REQUEST_free(req); 867 OCSP_RESPONSE_free(resp); 868 OCSP_BASICRESP_free(bs); 869 sk_free(reqnames); 870 sk_OCSP_CERTID_free(ids); 871 sk_X509_pop_free(sign_other, X509_free); 872 sk_X509_pop_free(verify_other, X509_free); 873 874 if (use_ssl != -1) 875 { 876 OPENSSL_free(host); 877 OPENSSL_free(port); 878 OPENSSL_free(path); 879 } 880 881 OPENSSL_EXIT(ret); 882 } 883 884 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer, 885 STACK_OF(OCSP_CERTID) *ids) 886 { 887 OCSP_CERTID *id; 888 if(!issuer) 889 { 890 BIO_printf(bio_err, "No issuer certificate specified\n"); 891 return 0; 892 } 893 if(!*req) *req = OCSP_REQUEST_new(); 894 if(!*req) goto err; 895 id = OCSP_cert_to_id(NULL, cert, issuer); 896 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 897 if(!OCSP_request_add0_id(*req, id)) goto err; 898 return 1; 899 900 err: 901 BIO_printf(bio_err, "Error Creating OCSP request\n"); 902 return 0; 903 } 904 905 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer, 906 STACK_OF(OCSP_CERTID) *ids) 907 { 908 OCSP_CERTID *id; 909 X509_NAME *iname; 910 ASN1_BIT_STRING *ikey; 911 ASN1_INTEGER *sno; 912 if(!issuer) 913 { 914 BIO_printf(bio_err, "No issuer certificate specified\n"); 915 return 0; 916 } 917 if(!*req) *req = OCSP_REQUEST_new(); 918 if(!*req) goto err; 919 iname = X509_get_subject_name(issuer); 920 ikey = X509_get0_pubkey_bitstr(issuer); 921 sno = s2i_ASN1_INTEGER(NULL, serial); 922 if(!sno) 923 { 924 BIO_printf(bio_err, "Error converting serial number %s\n", serial); 925 return 0; 926 } 927 id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno); 928 ASN1_INTEGER_free(sno); 929 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; 930 if(!OCSP_request_add0_id(*req, id)) goto err; 931 return 1; 932 933 err: 934 BIO_printf(bio_err, "Error Creating OCSP request\n"); 935 return 0; 936 } 937 938 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 939 STACK *names, STACK_OF(OCSP_CERTID) *ids, 940 long nsec, long maxage) 941 { 942 OCSP_CERTID *id; 943 char *name; 944 int i; 945 946 int status, reason; 947 948 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; 949 950 if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids)) 951 return 1; 952 953 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) 954 { 955 id = sk_OCSP_CERTID_value(ids, i); 956 name = sk_value(names, i); 957 BIO_printf(out, "%s: ", name); 958 959 if(!OCSP_resp_find_status(bs, id, &status, &reason, 960 &rev, &thisupd, &nextupd)) 961 { 962 BIO_puts(out, "ERROR: No Status found.\n"); 963 continue; 964 } 965 966 /* Check validity: if invalid write to output BIO so we 967 * know which response this refers to. 968 */ 969 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) 970 { 971 BIO_puts(out, "WARNING: Status times invalid.\n"); 972 ERR_print_errors(out); 973 } 974 BIO_printf(out, "%s\n", OCSP_cert_status_str(status)); 975 976 BIO_puts(out, "\tThis Update: "); 977 ASN1_GENERALIZEDTIME_print(out, thisupd); 978 BIO_puts(out, "\n"); 979 980 if(nextupd) 981 { 982 BIO_puts(out, "\tNext Update: "); 983 ASN1_GENERALIZEDTIME_print(out, nextupd); 984 BIO_puts(out, "\n"); 985 } 986 987 if (status != V_OCSP_CERTSTATUS_REVOKED) 988 continue; 989 990 if (reason != -1) 991 BIO_printf(out, "\tReason: %s\n", 992 OCSP_crl_reason_str(reason)); 993 994 BIO_puts(out, "\tRevocation Time: "); 995 ASN1_GENERALIZEDTIME_print(out, rev); 996 BIO_puts(out, "\n"); 997 } 998 999 return 1; 1000 } 1001 1002 1003 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, 1004 X509 *ca, X509 *rcert, EVP_PKEY *rkey, 1005 STACK_OF(X509) *rother, unsigned long flags, 1006 int nmin, int ndays) 1007 { 1008 ASN1_TIME *thisupd = NULL, *nextupd = NULL; 1009 OCSP_CERTID *cid, *ca_id = NULL; 1010 OCSP_BASICRESP *bs = NULL; 1011 int i, id_count, ret = 1; 1012 1013 1014 id_count = OCSP_request_onereq_count(req); 1015 1016 if (id_count <= 0) 1017 { 1018 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 1019 goto end; 1020 } 1021 1022 ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca); 1023 1024 bs = OCSP_BASICRESP_new(); 1025 thisupd = X509_gmtime_adj(NULL, 0); 1026 if (ndays != -1) 1027 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 ); 1028 1029 /* Examine each certificate id in the request */ 1030 for (i = 0; i < id_count; i++) 1031 { 1032 OCSP_ONEREQ *one; 1033 ASN1_INTEGER *serial; 1034 char **inf; 1035 one = OCSP_request_onereq_get0(req, i); 1036 cid = OCSP_onereq_get0_id(one); 1037 /* Is this request about our CA? */ 1038 if (OCSP_id_issuer_cmp(ca_id, cid)) 1039 { 1040 OCSP_basic_add1_status(bs, cid, 1041 V_OCSP_CERTSTATUS_UNKNOWN, 1042 0, NULL, 1043 thisupd, nextupd); 1044 continue; 1045 } 1046 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid); 1047 inf = lookup_serial(db, serial); 1048 if (!inf) 1049 OCSP_basic_add1_status(bs, cid, 1050 V_OCSP_CERTSTATUS_UNKNOWN, 1051 0, NULL, 1052 thisupd, nextupd); 1053 else if (inf[DB_type][0] == DB_TYPE_VAL) 1054 OCSP_basic_add1_status(bs, cid, 1055 V_OCSP_CERTSTATUS_GOOD, 1056 0, NULL, 1057 thisupd, nextupd); 1058 else if (inf[DB_type][0] == DB_TYPE_REV) 1059 { 1060 ASN1_OBJECT *inst = NULL; 1061 ASN1_TIME *revtm = NULL; 1062 ASN1_GENERALIZEDTIME *invtm = NULL; 1063 OCSP_SINGLERESP *single; 1064 int reason = -1; 1065 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]); 1066 single = OCSP_basic_add1_status(bs, cid, 1067 V_OCSP_CERTSTATUS_REVOKED, 1068 reason, revtm, 1069 thisupd, nextupd); 1070 if (invtm) 1071 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0); 1072 else if (inst) 1073 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0); 1074 ASN1_OBJECT_free(inst); 1075 ASN1_TIME_free(revtm); 1076 ASN1_GENERALIZEDTIME_free(invtm); 1077 } 1078 } 1079 1080 OCSP_copy_nonce(bs, req); 1081 1082 OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags); 1083 1084 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); 1085 1086 end: 1087 ASN1_TIME_free(thisupd); 1088 ASN1_TIME_free(nextupd); 1089 OCSP_CERTID_free(ca_id); 1090 OCSP_BASICRESP_free(bs); 1091 return ret; 1092 1093 } 1094 1095 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser) 1096 { 1097 int i; 1098 BIGNUM *bn = NULL; 1099 char *itmp, *row[DB_NUMBER],**rrow; 1100 for (i = 0; i < DB_NUMBER; i++) row[i] = NULL; 1101 bn = ASN1_INTEGER_to_BN(ser,NULL); 1102 OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */ 1103 if (BN_is_zero(bn)) 1104 itmp = BUF_strdup("00"); 1105 else 1106 itmp = BN_bn2hex(bn); 1107 row[DB_serial] = itmp; 1108 BN_free(bn); 1109 rrow=TXT_DB_get_by_index(db->db,DB_serial,row); 1110 OPENSSL_free(itmp); 1111 return rrow; 1112 } 1113 1114 /* Quick and dirty OCSP server: read in and parse input request */ 1115 1116 static BIO *init_responder(char *port) 1117 { 1118 BIO *acbio = NULL, *bufbio = NULL; 1119 bufbio = BIO_new(BIO_f_buffer()); 1120 if (!bufbio) 1121 goto err; 1122 #ifndef OPENSSL_NO_SOCK 1123 acbio = BIO_new_accept(port); 1124 #else 1125 BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n"); 1126 #endif 1127 if (!acbio) 1128 goto err; 1129 BIO_set_accept_bios(acbio, bufbio); 1130 bufbio = NULL; 1131 1132 if (BIO_do_accept(acbio) <= 0) 1133 { 1134 BIO_printf(bio_err, "Error setting up accept BIO\n"); 1135 ERR_print_errors(bio_err); 1136 goto err; 1137 } 1138 1139 return acbio; 1140 1141 err: 1142 BIO_free_all(acbio); 1143 BIO_free(bufbio); 1144 return NULL; 1145 } 1146 1147 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port) 1148 { 1149 int have_post = 0, len; 1150 OCSP_REQUEST *req = NULL; 1151 char inbuf[1024]; 1152 BIO *cbio = NULL; 1153 1154 if (BIO_do_accept(acbio) <= 0) 1155 { 1156 BIO_printf(bio_err, "Error accepting connection\n"); 1157 ERR_print_errors(bio_err); 1158 return 0; 1159 } 1160 1161 cbio = BIO_pop(acbio); 1162 *pcbio = cbio; 1163 1164 for(;;) 1165 { 1166 len = BIO_gets(cbio, inbuf, sizeof inbuf); 1167 if (len <= 0) 1168 return 1; 1169 /* Look for "POST" signalling start of query */ 1170 if (!have_post) 1171 { 1172 if(strncmp(inbuf, "POST", 4)) 1173 { 1174 BIO_printf(bio_err, "Invalid request\n"); 1175 return 1; 1176 } 1177 have_post = 1; 1178 } 1179 /* Look for end of headers */ 1180 if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) 1181 break; 1182 } 1183 1184 /* Try to read OCSP request */ 1185 1186 req = d2i_OCSP_REQUEST_bio(cbio, NULL); 1187 1188 if (!req) 1189 { 1190 BIO_printf(bio_err, "Error parsing OCSP request\n"); 1191 ERR_print_errors(bio_err); 1192 } 1193 1194 *preq = req; 1195 1196 return 1; 1197 1198 } 1199 1200 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp) 1201 { 1202 char http_resp[] = 1203 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n" 1204 "Content-Length: %d\r\n\r\n"; 1205 if (!cbio) 1206 return 0; 1207 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); 1208 i2d_OCSP_RESPONSE_bio(cbio, resp); 1209 (void)BIO_flush(cbio); 1210 return 1; 1211 } 1212 1213 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, 1214 OCSP_REQUEST *req, int req_timeout) 1215 { 1216 int fd; 1217 int rv; 1218 OCSP_REQ_CTX *ctx = NULL; 1219 OCSP_RESPONSE *rsp = NULL; 1220 fd_set confds; 1221 struct timeval tv; 1222 1223 if (req_timeout != -1) 1224 BIO_set_nbio(cbio, 1); 1225 1226 rv = BIO_do_connect(cbio); 1227 1228 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) 1229 { 1230 BIO_puts(err, "Error connecting BIO\n"); 1231 return NULL; 1232 } 1233 1234 if (req_timeout == -1) 1235 return OCSP_sendreq_bio(cbio, path, req); 1236 1237 if (BIO_get_fd(cbio, &fd) <= 0) 1238 { 1239 BIO_puts(err, "Can't get connection fd\n"); 1240 goto err; 1241 } 1242 1243 if (rv <= 0) 1244 { 1245 FD_ZERO(&confds); 1246 openssl_fdset(fd, &confds); 1247 tv.tv_usec = 0; 1248 tv.tv_sec = req_timeout; 1249 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); 1250 if (rv == 0) 1251 { 1252 BIO_puts(err, "Timeout on connect\n"); 1253 return NULL; 1254 } 1255 } 1256 1257 1258 ctx = OCSP_sendreq_new(cbio, path, req, -1); 1259 if (!ctx) 1260 return NULL; 1261 1262 for (;;) 1263 { 1264 rv = OCSP_sendreq_nbio(&rsp, ctx); 1265 if (rv != -1) 1266 break; 1267 FD_ZERO(&confds); 1268 openssl_fdset(fd, &confds); 1269 tv.tv_usec = 0; 1270 tv.tv_sec = req_timeout; 1271 if (BIO_should_read(cbio)) 1272 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv); 1273 else if (BIO_should_write(cbio)) 1274 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); 1275 else 1276 { 1277 BIO_puts(err, "Unexpected retry condition\n"); 1278 goto err; 1279 } 1280 if (rv == 0) 1281 { 1282 BIO_puts(err, "Timeout on request\n"); 1283 break; 1284 } 1285 if (rv == -1) 1286 { 1287 BIO_puts(err, "Select error\n"); 1288 break; 1289 } 1290 1291 } 1292 err: 1293 if (ctx) 1294 OCSP_REQ_CTX_free(ctx); 1295 1296 return rsp; 1297 } 1298 1299 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req, 1300 char *host, char *path, char *port, int use_ssl, 1301 int req_timeout) 1302 { 1303 BIO *cbio = NULL; 1304 SSL_CTX *ctx = NULL; 1305 OCSP_RESPONSE *resp = NULL; 1306 cbio = BIO_new_connect(host); 1307 if (!cbio) 1308 { 1309 BIO_printf(err, "Error creating connect BIO\n"); 1310 goto end; 1311 } 1312 if (port) BIO_set_conn_port(cbio, port); 1313 if (use_ssl == 1) 1314 { 1315 BIO *sbio; 1316 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3) 1317 ctx = SSL_CTX_new(SSLv23_client_method()); 1318 #elif !defined(OPENSSL_NO_SSL3) 1319 ctx = SSL_CTX_new(SSLv3_client_method()); 1320 #elif !defined(OPENSSL_NO_SSL2) 1321 ctx = SSL_CTX_new(SSLv2_client_method()); 1322 #else 1323 BIO_printf(err, "SSL is disabled\n"); 1324 goto end; 1325 #endif 1326 if (ctx == NULL) 1327 { 1328 BIO_printf(err, "Error creating SSL context.\n"); 1329 goto end; 1330 } 1331 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); 1332 sbio = BIO_new_ssl(ctx, 1); 1333 cbio = BIO_push(sbio, cbio); 1334 } 1335 resp = query_responder(err, cbio, path, req, req_timeout); 1336 if (!resp) 1337 BIO_printf(bio_err, "Error querying OCSP responsder\n"); 1338 end: 1339 if (ctx) 1340 SSL_CTX_free(ctx); 1341 if (cbio) 1342 BIO_free_all(cbio); 1343 return resp; 1344 } 1345 1346 #endif 1347