ocsp.c revision 280304
1/* ocsp.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 2000. 5 */ 6/* ==================================================================== 7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59#ifndef OPENSSL_NO_OCSP 60 61# ifdef OPENSSL_SYS_VMS 62# define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined 63 * on OpenVMS */ 64# endif 65 66# define USE_SOCKETS 67 68# include <stdio.h> 69# include <stdlib.h> 70# include <string.h> 71# include <time.h> 72# include "apps.h" /* needs to be included before the openssl 73 * headers! */ 74# include <openssl/e_os2.h> 75# include <openssl/crypto.h> 76# include <openssl/err.h> 77# include <openssl/ssl.h> 78# include <openssl/evp.h> 79# include <openssl/bn.h> 80# include <openssl/x509v3.h> 81 82# if defined(NETWARE_CLIB) 83# ifdef NETWARE_BSDSOCK 84# include <sys/socket.h> 85# include <sys/bsdskt.h> 86# else 87# include <novsock2.h> 88# endif 89# elif defined(NETWARE_LIBC) 90# ifdef NETWARE_BSDSOCK 91# include <sys/select.h> 92# else 93# include <novsock2.h> 94# endif 95# endif 96 97/* Maximum leeway in validity period: default 5 minutes */ 98# define MAX_VALIDITY_PERIOD (5 * 60) 99 100static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, 101 const EVP_MD *cert_id_md, X509 *issuer, 102 STACK_OF(OCSP_CERTID) *ids); 103static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, 104 const EVP_MD *cert_id_md, X509 *issuer, 105 STACK_OF(OCSP_CERTID) *ids); 106static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 107 STACK_OF(OPENSSL_STRING) *names, 108 STACK_OF(OCSP_CERTID) *ids, long nsec, 109 long maxage); 110 111static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, 112 CA_DB *db, X509 *ca, X509 *rcert, 113 EVP_PKEY *rkey, STACK_OF(X509) *rother, 114 unsigned long flags, int nmin, int ndays); 115 116static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser); 117static BIO *init_responder(char *port); 118static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, 119 char *port); 120static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); 121static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, 122 STACK_OF(CONF_VALUE) *headers, 123 OCSP_REQUEST *req, int req_timeout); 124 125# undef PROG 126# define PROG ocsp_main 127 128int MAIN(int, char **); 129 130int MAIN(int argc, char **argv) 131{ 132 ENGINE *e = NULL; 133 char **args; 134 char *host = NULL, *port = NULL, *path = "/"; 135 char *thost = NULL, *tport = NULL, *tpath = NULL; 136 char *reqin = NULL, *respin = NULL; 137 char *reqout = NULL, *respout = NULL; 138 char *signfile = NULL, *keyfile = NULL; 139 char *rsignfile = NULL, *rkeyfile = NULL; 140 char *outfile = NULL; 141 int add_nonce = 1, noverify = 0, use_ssl = -1; 142 STACK_OF(CONF_VALUE) *headers = NULL; 143 OCSP_REQUEST *req = NULL; 144 OCSP_RESPONSE *resp = NULL; 145 OCSP_BASICRESP *bs = NULL; 146 X509 *issuer = NULL, *cert = NULL; 147 X509 *signer = NULL, *rsigner = NULL; 148 EVP_PKEY *key = NULL, *rkey = NULL; 149 BIO *acbio = NULL, *cbio = NULL; 150 BIO *derbio = NULL; 151 BIO *out = NULL; 152 int req_timeout = -1; 153 int req_text = 0, resp_text = 0; 154 long nsec = MAX_VALIDITY_PERIOD, maxage = -1; 155 char *CAfile = NULL, *CApath = NULL; 156 X509_STORE *store = NULL; 157 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; 158 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; 159 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; 160 int ret = 1; 161 int accept_count = -1; 162 int badarg = 0; 163 int i; 164 int ignore_err = 0; 165 STACK_OF(OPENSSL_STRING) *reqnames = NULL; 166 STACK_OF(OCSP_CERTID) *ids = NULL; 167 168 X509 *rca_cert = NULL; 169 char *ridx_filename = NULL; 170 char *rca_filename = NULL; 171 CA_DB *rdb = NULL; 172 int nmin = 0, ndays = -1; 173 const EVP_MD *cert_id_md = NULL; 174 175 if (bio_err == NULL) 176 bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); 177 178 if (!load_config(bio_err, NULL)) 179 goto end; 180 SSL_load_error_strings(); 181 OpenSSL_add_ssl_algorithms(); 182 args = argv + 1; 183 reqnames = sk_OPENSSL_STRING_new_null(); 184 ids = sk_OCSP_CERTID_new_null(); 185 while (!badarg && *args && *args[0] == '-') { 186 if (!strcmp(*args, "-out")) { 187 if (args[1]) { 188 args++; 189 outfile = *args; 190 } else 191 badarg = 1; 192 } else if (!strcmp(*args, "-timeout")) { 193 if (args[1]) { 194 args++; 195 req_timeout = atol(*args); 196 if (req_timeout < 0) { 197 BIO_printf(bio_err, "Illegal timeout value %s\n", *args); 198 badarg = 1; 199 } 200 } else 201 badarg = 1; 202 } else if (!strcmp(*args, "-url")) { 203 if (thost) 204 OPENSSL_free(thost); 205 if (tport) 206 OPENSSL_free(tport); 207 if (tpath) 208 OPENSSL_free(tpath); 209 if (args[1]) { 210 args++; 211 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) { 212 BIO_printf(bio_err, "Error parsing URL\n"); 213 badarg = 1; 214 } 215 thost = host; 216 tport = port; 217 tpath = path; 218 } else 219 badarg = 1; 220 } else if (!strcmp(*args, "-host")) { 221 if (args[1]) { 222 args++; 223 host = *args; 224 } else 225 badarg = 1; 226 } else if (!strcmp(*args, "-port")) { 227 if (args[1]) { 228 args++; 229 port = *args; 230 } else 231 badarg = 1; 232 } else if (!strcmp(*args, "-header")) { 233 if (args[1] && args[2]) { 234 if (!X509V3_add_value(args[1], args[2], &headers)) 235 goto end; 236 args += 2; 237 } else 238 badarg = 1; 239 } else if (!strcmp(*args, "-ignore_err")) 240 ignore_err = 1; 241 else if (!strcmp(*args, "-noverify")) 242 noverify = 1; 243 else if (!strcmp(*args, "-nonce")) 244 add_nonce = 2; 245 else if (!strcmp(*args, "-no_nonce")) 246 add_nonce = 0; 247 else if (!strcmp(*args, "-resp_no_certs")) 248 rflags |= OCSP_NOCERTS; 249 else if (!strcmp(*args, "-resp_key_id")) 250 rflags |= OCSP_RESPID_KEY; 251 else if (!strcmp(*args, "-no_certs")) 252 sign_flags |= OCSP_NOCERTS; 253 else if (!strcmp(*args, "-no_signature_verify")) 254 verify_flags |= OCSP_NOSIGS; 255 else if (!strcmp(*args, "-no_cert_verify")) 256 verify_flags |= OCSP_NOVERIFY; 257 else if (!strcmp(*args, "-no_chain")) 258 verify_flags |= OCSP_NOCHAIN; 259 else if (!strcmp(*args, "-no_cert_checks")) 260 verify_flags |= OCSP_NOCHECKS; 261 else if (!strcmp(*args, "-no_explicit")) 262 verify_flags |= OCSP_NOEXPLICIT; 263 else if (!strcmp(*args, "-trust_other")) 264 verify_flags |= OCSP_TRUSTOTHER; 265 else if (!strcmp(*args, "-no_intern")) 266 verify_flags |= OCSP_NOINTERN; 267 else if (!strcmp(*args, "-text")) { 268 req_text = 1; 269 resp_text = 1; 270 } else if (!strcmp(*args, "-req_text")) 271 req_text = 1; 272 else if (!strcmp(*args, "-resp_text")) 273 resp_text = 1; 274 else if (!strcmp(*args, "-reqin")) { 275 if (args[1]) { 276 args++; 277 reqin = *args; 278 } else 279 badarg = 1; 280 } else if (!strcmp(*args, "-respin")) { 281 if (args[1]) { 282 args++; 283 respin = *args; 284 } else 285 badarg = 1; 286 } else if (!strcmp(*args, "-signer")) { 287 if (args[1]) { 288 args++; 289 signfile = *args; 290 } else 291 badarg = 1; 292 } else if (!strcmp(*args, "-VAfile")) { 293 if (args[1]) { 294 args++; 295 verify_certfile = *args; 296 verify_flags |= OCSP_TRUSTOTHER; 297 } else 298 badarg = 1; 299 } else if (!strcmp(*args, "-sign_other")) { 300 if (args[1]) { 301 args++; 302 sign_certfile = *args; 303 } else 304 badarg = 1; 305 } else if (!strcmp(*args, "-verify_other")) { 306 if (args[1]) { 307 args++; 308 verify_certfile = *args; 309 } else 310 badarg = 1; 311 } else if (!strcmp(*args, "-CAfile")) { 312 if (args[1]) { 313 args++; 314 CAfile = *args; 315 } else 316 badarg = 1; 317 } else if (!strcmp(*args, "-CApath")) { 318 if (args[1]) { 319 args++; 320 CApath = *args; 321 } else 322 badarg = 1; 323 } else if (!strcmp(*args, "-validity_period")) { 324 if (args[1]) { 325 args++; 326 nsec = atol(*args); 327 if (nsec < 0) { 328 BIO_printf(bio_err, 329 "Illegal validity period %s\n", *args); 330 badarg = 1; 331 } 332 } else 333 badarg = 1; 334 } else if (!strcmp(*args, "-status_age")) { 335 if (args[1]) { 336 args++; 337 maxage = atol(*args); 338 if (maxage < 0) { 339 BIO_printf(bio_err, "Illegal validity age %s\n", *args); 340 badarg = 1; 341 } 342 } else 343 badarg = 1; 344 } else if (!strcmp(*args, "-signkey")) { 345 if (args[1]) { 346 args++; 347 keyfile = *args; 348 } else 349 badarg = 1; 350 } else if (!strcmp(*args, "-reqout")) { 351 if (args[1]) { 352 args++; 353 reqout = *args; 354 } else 355 badarg = 1; 356 } else if (!strcmp(*args, "-respout")) { 357 if (args[1]) { 358 args++; 359 respout = *args; 360 } else 361 badarg = 1; 362 } else if (!strcmp(*args, "-path")) { 363 if (args[1]) { 364 args++; 365 path = *args; 366 } else 367 badarg = 1; 368 } else if (!strcmp(*args, "-issuer")) { 369 if (args[1]) { 370 args++; 371 X509_free(issuer); 372 issuer = load_cert(bio_err, *args, FORMAT_PEM, 373 NULL, e, "issuer certificate"); 374 if (!issuer) 375 goto end; 376 } else 377 badarg = 1; 378 } else if (!strcmp(*args, "-cert")) { 379 if (args[1]) { 380 args++; 381 X509_free(cert); 382 cert = load_cert(bio_err, *args, FORMAT_PEM, 383 NULL, e, "certificate"); 384 if (!cert) 385 goto end; 386 if (!cert_id_md) 387 cert_id_md = EVP_sha1(); 388 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids)) 389 goto end; 390 if (!sk_OPENSSL_STRING_push(reqnames, *args)) 391 goto end; 392 } else 393 badarg = 1; 394 } else if (!strcmp(*args, "-serial")) { 395 if (args[1]) { 396 args++; 397 if (!cert_id_md) 398 cert_id_md = EVP_sha1(); 399 if (!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids)) 400 goto end; 401 if (!sk_OPENSSL_STRING_push(reqnames, *args)) 402 goto end; 403 } else 404 badarg = 1; 405 } else if (!strcmp(*args, "-index")) { 406 if (args[1]) { 407 args++; 408 ridx_filename = *args; 409 } else 410 badarg = 1; 411 } else if (!strcmp(*args, "-CA")) { 412 if (args[1]) { 413 args++; 414 rca_filename = *args; 415 } else 416 badarg = 1; 417 } else if (!strcmp(*args, "-nmin")) { 418 if (args[1]) { 419 args++; 420 nmin = atol(*args); 421 if (nmin < 0) { 422 BIO_printf(bio_err, "Illegal update period %s\n", *args); 423 badarg = 1; 424 } 425 } 426 if (ndays == -1) 427 ndays = 0; 428 else 429 badarg = 1; 430 } else if (!strcmp(*args, "-nrequest")) { 431 if (args[1]) { 432 args++; 433 accept_count = atol(*args); 434 if (accept_count < 0) { 435 BIO_printf(bio_err, "Illegal accept count %s\n", *args); 436 badarg = 1; 437 } 438 } else 439 badarg = 1; 440 } else if (!strcmp(*args, "-ndays")) { 441 if (args[1]) { 442 args++; 443 ndays = atol(*args); 444 if (ndays < 0) { 445 BIO_printf(bio_err, "Illegal update period %s\n", *args); 446 badarg = 1; 447 } 448 } else 449 badarg = 1; 450 } else if (!strcmp(*args, "-rsigner")) { 451 if (args[1]) { 452 args++; 453 rsignfile = *args; 454 } else 455 badarg = 1; 456 } else if (!strcmp(*args, "-rkey")) { 457 if (args[1]) { 458 args++; 459 rkeyfile = *args; 460 } else 461 badarg = 1; 462 } else if (!strcmp(*args, "-rother")) { 463 if (args[1]) { 464 args++; 465 rcertfile = *args; 466 } else 467 badarg = 1; 468 } else if ((cert_id_md = EVP_get_digestbyname((*args) + 1)) == NULL) { 469 badarg = 1; 470 } 471 args++; 472 } 473 474 /* Have we anything to do? */ 475 if (!req && !reqin && !respin && !(port && ridx_filename)) 476 badarg = 1; 477 478 if (badarg) { 479 BIO_printf(bio_err, "OCSP utility\n"); 480 BIO_printf(bio_err, "Usage ocsp [options]\n"); 481 BIO_printf(bio_err, "where options are\n"); 482 BIO_printf(bio_err, "-out file output filename\n"); 483 BIO_printf(bio_err, "-issuer file issuer certificate\n"); 484 BIO_printf(bio_err, "-cert file certificate to check\n"); 485 BIO_printf(bio_err, "-serial n serial number to check\n"); 486 BIO_printf(bio_err, 487 "-signer file certificate to sign OCSP request with\n"); 488 BIO_printf(bio_err, 489 "-signkey file private key to sign OCSP request with\n"); 490 BIO_printf(bio_err, 491 "-sign_other file additional certificates to include in signed request\n"); 492 BIO_printf(bio_err, 493 "-no_certs don't include any certificates in signed request\n"); 494 BIO_printf(bio_err, 495 "-req_text print text form of request\n"); 496 BIO_printf(bio_err, 497 "-resp_text print text form of response\n"); 498 BIO_printf(bio_err, 499 "-text print text form of request and response\n"); 500 BIO_printf(bio_err, 501 "-reqout file write DER encoded OCSP request to \"file\"\n"); 502 BIO_printf(bio_err, 503 "-respout file write DER encoded OCSP reponse to \"file\"\n"); 504 BIO_printf(bio_err, 505 "-reqin file read DER encoded OCSP request from \"file\"\n"); 506 BIO_printf(bio_err, 507 "-respin file read DER encoded OCSP reponse from \"file\"\n"); 508 BIO_printf(bio_err, 509 "-nonce add OCSP nonce to request\n"); 510 BIO_printf(bio_err, 511 "-no_nonce don't add OCSP nonce to request\n"); 512 BIO_printf(bio_err, "-url URL OCSP responder URL\n"); 513 BIO_printf(bio_err, 514 "-host host:n send OCSP request to host on port n\n"); 515 BIO_printf(bio_err, 516 "-path path to use in OCSP request\n"); 517 BIO_printf(bio_err, 518 "-CApath dir trusted certificates directory\n"); 519 BIO_printf(bio_err, 520 "-CAfile file trusted certificates file\n"); 521 BIO_printf(bio_err, 522 "-VAfile file validator certificates file\n"); 523 BIO_printf(bio_err, 524 "-validity_period n maximum validity discrepancy in seconds\n"); 525 BIO_printf(bio_err, 526 "-status_age n maximum status age in seconds\n"); 527 BIO_printf(bio_err, 528 "-noverify don't verify response at all\n"); 529 BIO_printf(bio_err, 530 "-verify_other file additional certificates to search for signer\n"); 531 BIO_printf(bio_err, 532 "-trust_other don't verify additional certificates\n"); 533 BIO_printf(bio_err, 534 "-no_intern don't search certificates contained in response for signer\n"); 535 BIO_printf(bio_err, 536 "-no_signature_verify don't check signature on response\n"); 537 BIO_printf(bio_err, 538 "-no_cert_verify don't check signing certificate\n"); 539 BIO_printf(bio_err, 540 "-no_chain don't chain verify response\n"); 541 BIO_printf(bio_err, 542 "-no_cert_checks don't do additional checks on signing certificate\n"); 543 BIO_printf(bio_err, 544 "-port num port to run responder on\n"); 545 BIO_printf(bio_err, 546 "-index file certificate status index file\n"); 547 BIO_printf(bio_err, "-CA file CA certificate\n"); 548 BIO_printf(bio_err, 549 "-rsigner file responder certificate to sign responses with\n"); 550 BIO_printf(bio_err, 551 "-rkey file responder key to sign responses with\n"); 552 BIO_printf(bio_err, 553 "-rother file other certificates to include in response\n"); 554 BIO_printf(bio_err, 555 "-resp_no_certs don't include any certificates in response\n"); 556 BIO_printf(bio_err, 557 "-nmin n number of minutes before next update\n"); 558 BIO_printf(bio_err, 559 "-ndays n number of days before next update\n"); 560 BIO_printf(bio_err, 561 "-resp_key_id identify reponse by signing certificate key ID\n"); 562 BIO_printf(bio_err, 563 "-nrequest n number of requests to accept (default unlimited)\n"); 564 BIO_printf(bio_err, 565 "-<dgst alg> use specified digest in the request\n"); 566 BIO_printf(bio_err, 567 "-timeout n timeout connection to OCSP responder after n seconds\n"); 568 goto end; 569 } 570 571 if (outfile) 572 out = BIO_new_file(outfile, "w"); 573 else 574 out = BIO_new_fp(stdout, BIO_NOCLOSE); 575 576 if (!out) { 577 BIO_printf(bio_err, "Error opening output file\n"); 578 goto end; 579 } 580 581 if (!req && (add_nonce != 2)) 582 add_nonce = 0; 583 584 if (!req && reqin) { 585 derbio = BIO_new_file(reqin, "rb"); 586 if (!derbio) { 587 BIO_printf(bio_err, "Error Opening OCSP request file\n"); 588 goto end; 589 } 590 req = d2i_OCSP_REQUEST_bio(derbio, NULL); 591 BIO_free(derbio); 592 if (!req) { 593 BIO_printf(bio_err, "Error reading OCSP request\n"); 594 goto end; 595 } 596 } 597 598 if (!req && port) { 599 acbio = init_responder(port); 600 if (!acbio) 601 goto end; 602 } 603 604 if (rsignfile && !rdb) { 605 if (!rkeyfile) 606 rkeyfile = rsignfile; 607 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM, 608 NULL, e, "responder certificate"); 609 if (!rsigner) { 610 BIO_printf(bio_err, "Error loading responder certificate\n"); 611 goto end; 612 } 613 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM, 614 NULL, e, "CA certificate"); 615 if (rcertfile) { 616 rother = load_certs(bio_err, rcertfile, FORMAT_PEM, 617 NULL, e, "responder other certificates"); 618 if (!rother) 619 goto end; 620 } 621 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL, 622 "responder private key"); 623 if (!rkey) 624 goto end; 625 } 626 if (acbio) 627 BIO_printf(bio_err, "Waiting for OCSP client connections...\n"); 628 629 redo_accept: 630 631 if (acbio) { 632 if (!do_responder(&req, &cbio, acbio, port)) 633 goto end; 634 if (!req) { 635 resp = 636 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, 637 NULL); 638 send_ocsp_response(cbio, resp); 639 goto done_resp; 640 } 641 } 642 643 if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) { 644 BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); 645 goto end; 646 } 647 648 if (req && add_nonce) 649 OCSP_request_add1_nonce(req, NULL, -1); 650 651 if (signfile) { 652 if (!keyfile) 653 keyfile = signfile; 654 signer = load_cert(bio_err, signfile, FORMAT_PEM, 655 NULL, e, "signer certificate"); 656 if (!signer) { 657 BIO_printf(bio_err, "Error loading signer certificate\n"); 658 goto end; 659 } 660 if (sign_certfile) { 661 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM, 662 NULL, e, "signer certificates"); 663 if (!sign_other) 664 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; 670 671 if (!OCSP_request_sign 672 (req, signer, key, NULL, sign_other, sign_flags)) { 673 BIO_printf(bio_err, "Error signing OCSP request\n"); 674 goto end; 675 } 676 } 677 678 if (req_text && req) 679 OCSP_REQUEST_print(out, req, 0); 680 681 if (reqout) { 682 derbio = BIO_new_file(reqout, "wb"); 683 if (!derbio) { 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 BIO_printf(bio_err, 693 "Need a responder certificate, key and CA for this operation!\n"); 694 goto end; 695 } 696 697 if (ridx_filename && !rdb) { 698 rdb = load_index(ridx_filename, NULL); 699 if (!rdb) 700 goto end; 701 if (!index_index(rdb)) 702 goto end; 703 } 704 705 if (rdb) { 706 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, 707 rother, rflags, nmin, ndays); 708 if (cbio) 709 send_ocsp_response(cbio, resp); 710 } else if (host) { 711# ifndef OPENSSL_NO_SOCK 712 resp = process_responder(bio_err, req, host, path, 713 port, use_ssl, headers, req_timeout); 714 if (!resp) 715 goto end; 716# else 717 BIO_printf(bio_err, 718 "Error creating connect BIO - sockets not supported.\n"); 719 goto end; 720# endif 721 } else if (respin) { 722 derbio = BIO_new_file(respin, "rb"); 723 if (!derbio) { 724 BIO_printf(bio_err, "Error Opening OCSP response file\n"); 725 goto end; 726 } 727 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); 728 BIO_free(derbio); 729 if (!resp) { 730 BIO_printf(bio_err, "Error reading OCSP response\n"); 731 goto end; 732 } 733 734 } else { 735 ret = 0; 736 goto end; 737 } 738 739 done_resp: 740 741 if (respout) { 742 derbio = BIO_new_file(respout, "wb"); 743 if (!derbio) { 744 BIO_printf(bio_err, "Error opening file %s\n", respout); 745 goto end; 746 } 747 i2d_OCSP_RESPONSE_bio(derbio, resp); 748 BIO_free(derbio); 749 } 750 751 i = OCSP_response_status(resp); 752 753 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) { 754 BIO_printf(out, "Responder Error: %s (%d)\n", 755 OCSP_response_status_str(i), i); 756 if (ignore_err) 757 goto redo_accept; 758 ret = 0; 759 goto end; 760 } 761 762 if (resp_text) 763 OCSP_RESPONSE_print(out, resp, 0); 764 765 /* If running as responder don't verify our own response */ 766 if (cbio) { 767 if (accept_count > 0) 768 accept_count--; 769 /* Redo if more connections needed */ 770 if (accept_count) { 771 BIO_free_all(cbio); 772 cbio = NULL; 773 OCSP_REQUEST_free(req); 774 req = NULL; 775 OCSP_RESPONSE_free(resp); 776 resp = NULL; 777 goto redo_accept; 778 } 779 goto end; 780 } 781 782 if (!store) 783 store = setup_verify(bio_err, CAfile, CApath); 784 if (!store) 785 goto end; 786 if (verify_certfile) { 787 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM, 788 NULL, e, "validator certificate"); 789 if (!verify_other) 790 goto end; 791 } 792 793 bs = OCSP_response_get1_basic(resp); 794 795 if (!bs) { 796 BIO_printf(bio_err, "Error parsing response\n"); 797 goto end; 798 } 799 800 if (!noverify) { 801 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) { 802 if (i == -1) 803 BIO_printf(bio_err, "WARNING: no nonce in response\n"); 804 else { 805 BIO_printf(bio_err, "Nonce Verify error\n"); 806 goto end; 807 } 808 } 809 810 i = OCSP_basic_verify(bs, verify_other, store, verify_flags); 811 if (i < 0) 812 i = OCSP_basic_verify(bs, NULL, store, 0); 813 814 if (i <= 0) { 815 BIO_printf(bio_err, "Response Verify Failure\n"); 816 ERR_print_errors(bio_err); 817 } else 818 BIO_printf(bio_err, "Response verify OK\n"); 819 820 } 821 822 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage)) 823 goto end; 824 825 ret = 0; 826 827 end: 828 ERR_print_errors(bio_err); 829 X509_free(signer); 830 X509_STORE_free(store); 831 EVP_PKEY_free(key); 832 EVP_PKEY_free(rkey); 833 X509_free(issuer); 834 X509_free(cert); 835 X509_free(rsigner); 836 X509_free(rca_cert); 837 free_index(rdb); 838 BIO_free_all(cbio); 839 BIO_free_all(acbio); 840 BIO_free(out); 841 OCSP_REQUEST_free(req); 842 OCSP_RESPONSE_free(resp); 843 OCSP_BASICRESP_free(bs); 844 sk_OPENSSL_STRING_free(reqnames); 845 sk_OCSP_CERTID_free(ids); 846 sk_X509_pop_free(sign_other, X509_free); 847 sk_X509_pop_free(verify_other, X509_free); 848 sk_CONF_VALUE_pop_free(headers, X509V3_conf_free); 849 850 if (thost) 851 OPENSSL_free(thost); 852 if (tport) 853 OPENSSL_free(tport); 854 if (tpath) 855 OPENSSL_free(tpath); 856 857 OPENSSL_EXIT(ret); 858} 859 860static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, 861 const EVP_MD *cert_id_md, X509 *issuer, 862 STACK_OF(OCSP_CERTID) *ids) 863{ 864 OCSP_CERTID *id; 865 if (!issuer) { 866 BIO_printf(bio_err, "No issuer certificate specified\n"); 867 return 0; 868 } 869 if (!*req) 870 *req = OCSP_REQUEST_new(); 871 if (!*req) 872 goto err; 873 id = OCSP_cert_to_id(cert_id_md, cert, issuer); 874 if (!id || !sk_OCSP_CERTID_push(ids, id)) 875 goto err; 876 if (!OCSP_request_add0_id(*req, id)) 877 goto err; 878 return 1; 879 880 err: 881 BIO_printf(bio_err, "Error Creating OCSP request\n"); 882 return 0; 883} 884 885static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, 886 const EVP_MD *cert_id_md, X509 *issuer, 887 STACK_OF(OCSP_CERTID) *ids) 888{ 889 OCSP_CERTID *id; 890 X509_NAME *iname; 891 ASN1_BIT_STRING *ikey; 892 ASN1_INTEGER *sno; 893 if (!issuer) { 894 BIO_printf(bio_err, "No issuer certificate specified\n"); 895 return 0; 896 } 897 if (!*req) 898 *req = OCSP_REQUEST_new(); 899 if (!*req) 900 goto err; 901 iname = X509_get_subject_name(issuer); 902 ikey = X509_get0_pubkey_bitstr(issuer); 903 sno = s2i_ASN1_INTEGER(NULL, serial); 904 if (!sno) { 905 BIO_printf(bio_err, "Error converting serial number %s\n", serial); 906 return 0; 907 } 908 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno); 909 ASN1_INTEGER_free(sno); 910 if (!id || !sk_OCSP_CERTID_push(ids, id)) 911 goto err; 912 if (!OCSP_request_add0_id(*req, id)) 913 goto err; 914 return 1; 915 916 err: 917 BIO_printf(bio_err, "Error Creating OCSP request\n"); 918 return 0; 919} 920 921static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, 922 STACK_OF(OPENSSL_STRING) *names, 923 STACK_OF(OCSP_CERTID) *ids, long nsec, 924 long maxage) 925{ 926 OCSP_CERTID *id; 927 char *name; 928 int i; 929 930 int status, reason; 931 932 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; 933 934 if (!bs || !req || !sk_OPENSSL_STRING_num(names) 935 || !sk_OCSP_CERTID_num(ids)) 936 return 1; 937 938 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) { 939 id = sk_OCSP_CERTID_value(ids, i); 940 name = sk_OPENSSL_STRING_value(names, i); 941 BIO_printf(out, "%s: ", name); 942 943 if (!OCSP_resp_find_status(bs, id, &status, &reason, 944 &rev, &thisupd, &nextupd)) { 945 BIO_puts(out, "ERROR: No Status found.\n"); 946 continue; 947 } 948 949 /* 950 * Check validity: if invalid write to output BIO so we know which 951 * response this refers to. 952 */ 953 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) { 954 BIO_puts(out, "WARNING: Status times invalid.\n"); 955 ERR_print_errors(out); 956 } 957 BIO_printf(out, "%s\n", OCSP_cert_status_str(status)); 958 959 BIO_puts(out, "\tThis Update: "); 960 ASN1_GENERALIZEDTIME_print(out, thisupd); 961 BIO_puts(out, "\n"); 962 963 if (nextupd) { 964 BIO_puts(out, "\tNext Update: "); 965 ASN1_GENERALIZEDTIME_print(out, nextupd); 966 BIO_puts(out, "\n"); 967 } 968 969 if (status != V_OCSP_CERTSTATUS_REVOKED) 970 continue; 971 972 if (reason != -1) 973 BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason)); 974 975 BIO_puts(out, "\tRevocation Time: "); 976 ASN1_GENERALIZEDTIME_print(out, rev); 977 BIO_puts(out, "\n"); 978 } 979 980 return 1; 981} 982 983static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, 984 CA_DB *db, X509 *ca, X509 *rcert, 985 EVP_PKEY *rkey, STACK_OF(X509) *rother, 986 unsigned long flags, int nmin, int ndays) 987{ 988 ASN1_TIME *thisupd = NULL, *nextupd = NULL; 989 OCSP_CERTID *cid, *ca_id = NULL; 990 OCSP_BASICRESP *bs = NULL; 991 int i, id_count, ret = 1; 992 993 id_count = OCSP_request_onereq_count(req); 994 995 if (id_count <= 0) { 996 *resp = 997 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); 998 goto end; 999 } 1000 1001 bs = OCSP_BASICRESP_new(); 1002 thisupd = X509_gmtime_adj(NULL, 0); 1003 if (ndays != -1) 1004 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24); 1005 1006 /* Examine each certificate id in the request */ 1007 for (i = 0; i < id_count; i++) { 1008 OCSP_ONEREQ *one; 1009 ASN1_INTEGER *serial; 1010 char **inf; 1011 ASN1_OBJECT *cert_id_md_oid; 1012 const EVP_MD *cert_id_md; 1013 one = OCSP_request_onereq_get0(req, i); 1014 cid = OCSP_onereq_get0_id(one); 1015 1016 OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid); 1017 1018 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid); 1019 if (!cert_id_md) { 1020 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, 1021 NULL); 1022 goto end; 1023 } 1024 if (ca_id) 1025 OCSP_CERTID_free(ca_id); 1026 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca); 1027 1028 /* Is this request about our CA? */ 1029 if (OCSP_id_issuer_cmp(ca_id, cid)) { 1030 OCSP_basic_add1_status(bs, cid, 1031 V_OCSP_CERTSTATUS_UNKNOWN, 1032 0, NULL, thisupd, nextupd); 1033 continue; 1034 } 1035 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid); 1036 inf = lookup_serial(db, serial); 1037 if (!inf) 1038 OCSP_basic_add1_status(bs, cid, 1039 V_OCSP_CERTSTATUS_UNKNOWN, 1040 0, NULL, thisupd, nextupd); 1041 else if (inf[DB_type][0] == DB_TYPE_VAL) 1042 OCSP_basic_add1_status(bs, cid, 1043 V_OCSP_CERTSTATUS_GOOD, 1044 0, NULL, thisupd, nextupd); 1045 else if (inf[DB_type][0] == DB_TYPE_REV) { 1046 ASN1_OBJECT *inst = NULL; 1047 ASN1_TIME *revtm = NULL; 1048 ASN1_GENERALIZEDTIME *invtm = NULL; 1049 OCSP_SINGLERESP *single; 1050 int reason = -1; 1051 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]); 1052 single = OCSP_basic_add1_status(bs, cid, 1053 V_OCSP_CERTSTATUS_REVOKED, 1054 reason, revtm, thisupd, nextupd); 1055 if (invtm) 1056 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, 1057 invtm, 0, 0); 1058 else if (inst) 1059 OCSP_SINGLERESP_add1_ext_i2d(single, 1060 NID_hold_instruction_code, inst, 1061 0, 0); 1062 ASN1_OBJECT_free(inst); 1063 ASN1_TIME_free(revtm); 1064 ASN1_GENERALIZEDTIME_free(invtm); 1065 } 1066 } 1067 1068 OCSP_copy_nonce(bs, req); 1069 1070 OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags); 1071 1072 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); 1073 1074 end: 1075 ASN1_TIME_free(thisupd); 1076 ASN1_TIME_free(nextupd); 1077 OCSP_CERTID_free(ca_id); 1078 OCSP_BASICRESP_free(bs); 1079 return ret; 1080 1081} 1082 1083static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser) 1084{ 1085 int i; 1086 BIGNUM *bn = NULL; 1087 char *itmp, *row[DB_NUMBER], **rrow; 1088 for (i = 0; i < DB_NUMBER; i++) 1089 row[i] = NULL; 1090 bn = ASN1_INTEGER_to_BN(ser, NULL); 1091 OPENSSL_assert(bn); /* FIXME: should report an error at this 1092 * point and abort */ 1093 if (BN_is_zero(bn)) 1094 itmp = BUF_strdup("00"); 1095 else 1096 itmp = BN_bn2hex(bn); 1097 row[DB_serial] = itmp; 1098 BN_free(bn); 1099 rrow = TXT_DB_get_by_index(db->db, DB_serial, row); 1100 OPENSSL_free(itmp); 1101 return rrow; 1102} 1103 1104/* Quick and dirty OCSP server: read in and parse input request */ 1105 1106static BIO *init_responder(char *port) 1107{ 1108 BIO *acbio = NULL, *bufbio = NULL; 1109 bufbio = BIO_new(BIO_f_buffer()); 1110 if (!bufbio) 1111 goto err; 1112# ifndef OPENSSL_NO_SOCK 1113 acbio = BIO_new_accept(port); 1114# else 1115 BIO_printf(bio_err, 1116 "Error setting up accept BIO - sockets not supported.\n"); 1117# endif 1118 if (!acbio) 1119 goto err; 1120 BIO_set_accept_bios(acbio, bufbio); 1121 bufbio = NULL; 1122 1123 if (BIO_do_accept(acbio) <= 0) { 1124 BIO_printf(bio_err, "Error setting up accept BIO\n"); 1125 ERR_print_errors(bio_err); 1126 goto err; 1127 } 1128 1129 return acbio; 1130 1131 err: 1132 BIO_free_all(acbio); 1133 BIO_free(bufbio); 1134 return NULL; 1135} 1136 1137static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, 1138 char *port) 1139{ 1140 int have_post = 0, len; 1141 OCSP_REQUEST *req = NULL; 1142 char inbuf[1024]; 1143 BIO *cbio = NULL; 1144 1145 if (BIO_do_accept(acbio) <= 0) { 1146 BIO_printf(bio_err, "Error accepting connection\n"); 1147 ERR_print_errors(bio_err); 1148 return 0; 1149 } 1150 1151 cbio = BIO_pop(acbio); 1152 *pcbio = cbio; 1153 1154 for (;;) { 1155 len = BIO_gets(cbio, inbuf, sizeof inbuf); 1156 if (len <= 0) 1157 return 1; 1158 /* Look for "POST" signalling start of query */ 1159 if (!have_post) { 1160 if (strncmp(inbuf, "POST", 4)) { 1161 BIO_printf(bio_err, "Invalid request\n"); 1162 return 1; 1163 } 1164 have_post = 1; 1165 } 1166 /* Look for end of headers */ 1167 if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) 1168 break; 1169 } 1170 1171 /* Try to read OCSP request */ 1172 1173 req = d2i_OCSP_REQUEST_bio(cbio, NULL); 1174 1175 if (!req) { 1176 BIO_printf(bio_err, "Error parsing OCSP request\n"); 1177 ERR_print_errors(bio_err); 1178 } 1179 1180 *preq = req; 1181 1182 return 1; 1183 1184} 1185 1186static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp) 1187{ 1188 char http_resp[] = 1189 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n" 1190 "Content-Length: %d\r\n\r\n"; 1191 if (!cbio) 1192 return 0; 1193 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); 1194 i2d_OCSP_RESPONSE_bio(cbio, resp); 1195 (void)BIO_flush(cbio); 1196 return 1; 1197} 1198 1199static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, 1200 STACK_OF(CONF_VALUE) *headers, 1201 OCSP_REQUEST *req, int req_timeout) 1202{ 1203 int fd; 1204 int rv; 1205 int i; 1206 OCSP_REQ_CTX *ctx = NULL; 1207 OCSP_RESPONSE *rsp = NULL; 1208 fd_set confds; 1209 struct timeval tv; 1210 1211 if (req_timeout != -1) 1212 BIO_set_nbio(cbio, 1); 1213 1214 rv = BIO_do_connect(cbio); 1215 1216 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) { 1217 BIO_puts(err, "Error connecting BIO\n"); 1218 return NULL; 1219 } 1220 1221 if (BIO_get_fd(cbio, &fd) <= 0) { 1222 BIO_puts(err, "Can't get connection fd\n"); 1223 goto err; 1224 } 1225 1226 if (req_timeout != -1 && rv <= 0) { 1227 FD_ZERO(&confds); 1228 openssl_fdset(fd, &confds); 1229 tv.tv_usec = 0; 1230 tv.tv_sec = req_timeout; 1231 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); 1232 if (rv == 0) { 1233 BIO_puts(err, "Timeout on connect\n"); 1234 return NULL; 1235 } 1236 } 1237 1238 ctx = OCSP_sendreq_new(cbio, path, NULL, -1); 1239 if (!ctx) 1240 return NULL; 1241 1242 for (i = 0; i < sk_CONF_VALUE_num(headers); i++) { 1243 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i); 1244 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value)) 1245 goto err; 1246 } 1247 1248 if (!OCSP_REQ_CTX_set1_req(ctx, req)) 1249 goto err; 1250 1251 for (;;) { 1252 rv = OCSP_sendreq_nbio(&rsp, ctx); 1253 if (rv != -1) 1254 break; 1255 if (req_timeout == -1) 1256 continue; 1257 FD_ZERO(&confds); 1258 openssl_fdset(fd, &confds); 1259 tv.tv_usec = 0; 1260 tv.tv_sec = req_timeout; 1261 if (BIO_should_read(cbio)) 1262 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv); 1263 else if (BIO_should_write(cbio)) 1264 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); 1265 else { 1266 BIO_puts(err, "Unexpected retry condition\n"); 1267 goto err; 1268 } 1269 if (rv == 0) { 1270 BIO_puts(err, "Timeout on request\n"); 1271 break; 1272 } 1273 if (rv == -1) { 1274 BIO_puts(err, "Select error\n"); 1275 break; 1276 } 1277 1278 } 1279 err: 1280 if (ctx) 1281 OCSP_REQ_CTX_free(ctx); 1282 1283 return rsp; 1284} 1285 1286OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req, 1287 char *host, char *path, char *port, 1288 int use_ssl, STACK_OF(CONF_VALUE) *headers, 1289 int req_timeout) 1290{ 1291 BIO *cbio = NULL; 1292 SSL_CTX *ctx = NULL; 1293 OCSP_RESPONSE *resp = NULL; 1294 cbio = BIO_new_connect(host); 1295 if (!cbio) { 1296 BIO_printf(err, "Error creating connect BIO\n"); 1297 goto end; 1298 } 1299 if (port) 1300 BIO_set_conn_port(cbio, port); 1301 if (use_ssl == 1) { 1302 BIO *sbio; 1303 ctx = SSL_CTX_new(SSLv23_client_method()); 1304 if (ctx == NULL) { 1305 BIO_printf(err, "Error creating SSL context.\n"); 1306 goto end; 1307 } 1308 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); 1309 sbio = BIO_new_ssl(ctx, 1); 1310 cbio = BIO_push(sbio, cbio); 1311 } 1312 resp = query_responder(err, cbio, path, headers, req, req_timeout); 1313 if (!resp) 1314 BIO_printf(bio_err, "Error querying OCSP responder\n"); 1315 end: 1316 if (cbio) 1317 BIO_free_all(cbio); 1318 if (ctx) 1319 SSL_CTX_free(ctx); 1320 return resp; 1321} 1322 1323#endif 1324