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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 <stdlib.h>
62 #include <string.h>
63 #include <openssl/e_os2.h>
64 #include <openssl/bio.h>
65 #include <openssl/ocsp.h>
66 #include <openssl/txt_db.h>
67 #include <openssl/ssl.h>
68 #include <openssl/evp.h>
69 #include "apps.h"
70
71 /* Maximum leeway in validity period: default 5 minutes */
72 #define MAX_VALIDITY_PERIOD (5 * 60)
73
74 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md, X509 *issuer,
75 STACK_OF(OCSP_CERTID) *ids);
76 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, const EVP_MD * cert_id_md, X509 *issuer,
77 STACK_OF(OCSP_CERTID) *ids);
78 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
79 STACK *names, STACK_OF(OCSP_CERTID) *ids,
80 long nsec, long maxage);
81
82 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
83 X509 *ca, X509 *rcert, EVP_PKEY *rkey,
84 STACK_OF(X509) *rother, unsigned long flags,
85 int nmin, int ndays);
86
87 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
88 static BIO *init_responder(char *port);
89 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
90 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
91 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
92 OCSP_REQUEST *req, int req_timeout);
93
94 #undef PROG
95 #define PROG ocsp_main
96
97 int MAIN(int, char **);
98
99 int MAIN(int argc, char **argv)
100 {
101 ENGINE *e = NULL;
102 char **args;
103 char *host = NULL, *port = NULL, *path = "/";
104 char *reqin = NULL, *respin = NULL;
105 char *reqout = NULL, *respout = NULL;
106 char *signfile = NULL, *keyfile = NULL;
107 char *rsignfile = NULL, *rkeyfile = NULL;
108 char *outfile = NULL;
109 int add_nonce = 1, noverify = 0, use_ssl = -1;
110 OCSP_REQUEST *req = NULL;
111 OCSP_RESPONSE *resp = NULL;
112 OCSP_BASICRESP *bs = NULL;
113 X509 *issuer = NULL, *cert = NULL;
114 X509 *signer = NULL, *rsigner = NULL;
115 EVP_PKEY *key = NULL, *rkey = NULL;
116 BIO *acbio = NULL, *cbio = NULL;
117 BIO *derbio = NULL;
118 BIO *out = NULL;
119 int req_timeout = -1;
120 int req_text = 0, resp_text = 0;
121 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
122 char *CAfile = NULL, *CApath = NULL;
123 X509_STORE *store = NULL;
124 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
125 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
126 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
127 int ret = 1;
128 int accept_count = -1;
129 int badarg = 0;
130 int i;
131 int ignore_err = 0;
132 STACK *reqnames = NULL;
133 STACK_OF(OCSP_CERTID) *ids = NULL;
134
135 X509 *rca_cert = NULL;
136 char *ridx_filename = NULL;
137 char *rca_filename = NULL;
138 CA_DB *rdb = NULL;
139 int nmin = 0, ndays = -1;
140 const EVP_MD *cert_id_md = NULL;
141
142 if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
143
144 if (!load_config(bio_err, NULL))
145 goto end;
146 SSL_load_error_strings();
147 OpenSSL_add_ssl_algorithms();
148 args = argv + 1;
149 reqnames = sk_new_null();
150 ids = sk_OCSP_CERTID_new_null();
151 while (!badarg && *args && *args[0] == '-')
152 {
153 if (!strcmp(*args, "-out"))
154 {
155 if (args[1])
156 {
157 args++;
158 outfile = *args;
159 }
160 else badarg = 1;
161 }
162 else if (!strcmp(*args, "-timeout"))
163 {
164 if (args[1])
165 {
166 args++;
167 req_timeout = atol(*args);
168 if (req_timeout < 0)
169 {
170 BIO_printf(bio_err,
171 "Illegal timeout value %s\n",
172 *args);
173 badarg = 1;
174 }
175 }
176 else badarg = 1;
177 }
178 else if (!strcmp(*args, "-url"))
179 {
180 if (args[1])
181 {
182 args++;
183 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
184 {
185 BIO_printf(bio_err, "Error parsing URL\n");
186 badarg = 1;
187 }
188 }
189 else badarg = 1;
190 }
191 else if (!strcmp(*args, "-host"))
192 {
193 if (args[1])
194 {
195 args++;
196 host = *args;
197 }
198 else badarg = 1;
199 }
200 else if (!strcmp(*args, "-port"))
201 {
202 if (args[1])
203 {
204 args++;
205 port = *args;
206 }
207 else badarg = 1;
208 }
209 else if (!strcmp(*args, "-ignore_err"))
210 ignore_err = 1;
211 else if (!strcmp(*args, "-noverify"))
212 noverify = 1;
213 else if (!strcmp(*args, "-nonce"))
214 add_nonce = 2;
215 else if (!strcmp(*args, "-no_nonce"))
216 add_nonce = 0;
217 else if (!strcmp(*args, "-resp_no_certs"))
218 rflags |= OCSP_NOCERTS;
219 else if (!strcmp(*args, "-resp_key_id"))
220 rflags |= OCSP_RESPID_KEY;
221 else if (!strcmp(*args, "-no_certs"))
222 sign_flags |= OCSP_NOCERTS;
223 else if (!strcmp(*args, "-no_signature_verify"))
224 verify_flags |= OCSP_NOSIGS;
225 else if (!strcmp(*args, "-no_cert_verify"))
226 verify_flags |= OCSP_NOVERIFY;
227 else if (!strcmp(*args, "-no_chain"))
228 verify_flags |= OCSP_NOCHAIN;
229 else if (!strcmp(*args, "-no_cert_checks"))
230 verify_flags |= OCSP_NOCHECKS;
231 else if (!strcmp(*args, "-no_explicit"))
232 verify_flags |= OCSP_NOEXPLICIT;
233 else if (!strcmp(*args, "-trust_other"))
234 verify_flags |= OCSP_TRUSTOTHER;
235 else if (!strcmp(*args, "-no_intern"))
236 verify_flags |= OCSP_NOINTERN;
237 else if (!strcmp(*args, "-text"))
238 {
239 req_text = 1;
240 resp_text = 1;
241 }
242 else if (!strcmp(*args, "-req_text"))
243 req_text = 1;
244 else if (!strcmp(*args, "-resp_text"))
245 resp_text = 1;
246 else if (!strcmp(*args, "-reqin"))
247 {
248 if (args[1])
249 {
250 args++;
251 reqin = *args;
252 }
253 else badarg = 1;
254 }
255 else if (!strcmp(*args, "-respin"))
256 {
257 if (args[1])
258 {
259 args++;
260 respin = *args;
261 }
262 else badarg = 1;
263 }
264 else if (!strcmp(*args, "-signer"))
265 {
266 if (args[1])
267 {
268 args++;
269 signfile = *args;
270 }
271 else badarg = 1;
272 }
273 else if (!strcmp (*args, "-VAfile"))
274 {
275 if (args[1])
276 {
277 args++;
278 verify_certfile = *args;
279 verify_flags |= OCSP_TRUSTOTHER;
280 }
281 else badarg = 1;
282 }
283 else if (!strcmp(*args, "-sign_other"))
284 {
285 if (args[1])
286 {
287 args++;
288 sign_certfile = *args;
289 }
290 else badarg = 1;
291 }
292 else if (!strcmp(*args, "-verify_other"))
293 {
294 if (args[1])
295 {
296 args++;
297 verify_certfile = *args;
298 }
299 else badarg = 1;
300 }
301 else if (!strcmp (*args, "-CAfile"))
302 {
303 if (args[1])
304 {
305 args++;
306 CAfile = *args;
307 }
308 else badarg = 1;
309 }
310 else if (!strcmp (*args, "-CApath"))
311 {
312 if (args[1])
313 {
314 args++;
315 CApath = *args;
316 }
317 else badarg = 1;
318 }
319 else if (!strcmp (*args, "-validity_period"))
320 {
321 if (args[1])
322 {
323 args++;
324 nsec = atol(*args);
325 if (nsec < 0)
326 {
327 BIO_printf(bio_err,
328 "Illegal validity period %s\n",
329 *args);
330 badarg = 1;
331 }
332 }
333 else badarg = 1;
334 }
335 else if (!strcmp (*args, "-status_age"))
336 {
337 if (args[1])
338 {
339 args++;
340 maxage = atol(*args);
341 if (maxage < 0)
342 {
343 BIO_printf(bio_err,
344 "Illegal validity age %s\n",
345 *args);
346 badarg = 1;
347 }
348 }
349 else badarg = 1;
350 }
351 else if (!strcmp(*args, "-signkey"))
352 {
353 if (args[1])
354 {
355 args++;
356 keyfile = *args;
357 }
358 else badarg = 1;
359 }
360 else if (!strcmp(*args, "-reqout"))
361 {
362 if (args[1])
363 {
364 args++;
365 reqout = *args;
366 }
367 else badarg = 1;
368 }
369 else if (!strcmp(*args, "-respout"))
370 {
371 if (args[1])
372 {
373 args++;
374 respout = *args;
375 }
376 else badarg = 1;
377 }
378 else if (!strcmp(*args, "-path"))
379 {
380 if (args[1])
381 {
382 args++;
383 path = *args;
384 }
385 else badarg = 1;
386 }
387 else if (!strcmp(*args, "-issuer"))
388 {
389 if (args[1])
390 {
391 args++;
392 X509_free(issuer);
393 issuer = load_cert(bio_err, *args, FORMAT_PEM,
394 NULL, e, "issuer certificate");
395 if(!issuer) goto end;
396 }
397 else badarg = 1;
398 }
399 else if (!strcmp (*args, "-cert"))
400 {
401 if (args[1])
402 {
403 args++;
404 X509_free(cert);
405 cert = load_cert(bio_err, *args, FORMAT_PEM,
406 NULL, e, "certificate");
407 if(!cert) goto end;
408 if (!cert_id_md) cert_id_md = EVP_sha1();
409 if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
410 goto end;
411 if(!sk_push(reqnames, *args))
412 goto end;
413 }
414 else badarg = 1;
415 }
416 else if (!strcmp(*args, "-serial"))
417 {
418 if (args[1])
419 {
420 args++;
421 if (!cert_id_md) cert_id_md = EVP_sha1();
422 if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
423 goto end;
424 if(!sk_push(reqnames, *args))
425 goto end;
426 }
427 else badarg = 1;
428 }
429 else if (!strcmp(*args, "-index"))
430 {
431 if (args[1])
432 {
433 args++;
434 ridx_filename = *args;
435 }
436 else badarg = 1;
437 }
438 else if (!strcmp(*args, "-CA"))
439 {
440 if (args[1])
441 {
442 args++;
443 rca_filename = *args;
444 }
445 else badarg = 1;
446 }
447 else if (!strcmp (*args, "-nmin"))
448 {
449 if (args[1])
450 {
451 args++;
452 nmin = atol(*args);
453 if (nmin < 0)
454 {
455 BIO_printf(bio_err,
456 "Illegal update period %s\n",
457 *args);
458 badarg = 1;
459 }
460 }
461 if (ndays == -1)
462 ndays = 0;
463 else badarg = 1;
464 }
465 else if (!strcmp (*args, "-nrequest"))
466 {
467 if (args[1])
468 {
469 args++;
470 accept_count = atol(*args);
471 if (accept_count < 0)
472 {
473 BIO_printf(bio_err,
474 "Illegal accept count %s\n",
475 *args);
476 badarg = 1;
477 }
478 }
479 else badarg = 1;
480 }
481 else if (!strcmp (*args, "-ndays"))
482 {
483 if (args[1])
484 {
485 args++;
486 ndays = atol(*args);
487 if (ndays < 0)
488 {
489 BIO_printf(bio_err,
490 "Illegal update period %s\n",
491 *args);
492 badarg = 1;
493 }
494 }
495 else badarg = 1;
496 }
497 else if (!strcmp(*args, "-rsigner"))
498 {
499 if (args[1])
500 {
501 args++;
502 rsignfile = *args;
503 }
504 else badarg = 1;
505 }
506 else if (!strcmp(*args, "-rkey"))
507 {
508 if (args[1])
509 {
510 args++;
511 rkeyfile = *args;
512 }
513 else badarg = 1;
514 }
515 else if (!strcmp(*args, "-rother"))
516 {
517 if (args[1])
518 {
519 args++;
520 rcertfile = *args;
521 }
522 else badarg = 1;
523 }
524 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
525 {
526 badarg = 1;
527 }
528 args++;
529 }
530
531 /* Have we anything to do? */
532 if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
533
534 if (badarg)
535 {
536 BIO_printf (bio_err, "OCSP utility\n");
537 BIO_printf (bio_err, "Usage ocsp [options]\n");
538 BIO_printf (bio_err, "where options are\n");
539 BIO_printf (bio_err, "-out file output filename\n");
540 BIO_printf (bio_err, "-issuer file issuer certificate\n");
541 BIO_printf (bio_err, "-cert file certificate to check\n");
542 BIO_printf (bio_err, "-serial n serial number to check\n");
543 BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n");
544 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n");
545 BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n");
546 BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n");
547 BIO_printf (bio_err, "-req_text print text form of request\n");
548 BIO_printf (bio_err, "-resp_text print text form of response\n");
549 BIO_printf (bio_err, "-text print text form of request and response\n");
550 BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n");
551 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
552 BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n");
553 BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n");
554 BIO_printf (bio_err, "-nonce add OCSP nonce to request\n");
555 BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n");
556 BIO_printf (bio_err, "-url URL OCSP responder URL\n");
557 BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n");
558 BIO_printf (bio_err, "-path path to use in OCSP request\n");
559 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
560 BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
561 BIO_printf (bio_err, "-VAfile file validator certificates file\n");
562 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
563 BIO_printf (bio_err, "-status_age n maximum status age in seconds\n");
564 BIO_printf (bio_err, "-noverify don't verify response at all\n");
565 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
566 BIO_printf (bio_err, "-trust_other don't verify additional certificates\n");
567 BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n");
568 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
569 BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n");
570 BIO_printf (bio_err, "-no_chain don't chain verify response\n");
571 BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n");
572 BIO_printf (bio_err, "-port num port to run responder on\n");
573 BIO_printf (bio_err, "-index file certificate status index file\n");
574 BIO_printf (bio_err, "-CA file CA certificate\n");
575 BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n");
576 BIO_printf (bio_err, "-rkey file responder key to sign responses with\n");
577 BIO_printf (bio_err, "-rother file other certificates to include in response\n");
578 BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n");
579 BIO_printf (bio_err, "-nmin n number of minutes before next update\n");
580 BIO_printf (bio_err, "-ndays n number of days before next update\n");
581 BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n");
582 BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n");
583 BIO_printf (bio_err, "-<dgst alg> use specified digest in the request");
584 goto end;
585 }
586
587 if(outfile) out = BIO_new_file(outfile, "w");
588 else out = BIO_new_fp(stdout, BIO_NOCLOSE);
589
590 if(!out)
591 {
592 BIO_printf(bio_err, "Error opening output file\n");
593 goto end;
594 }
595
596 if (!req && (add_nonce != 2)) add_nonce = 0;
597
598 if (!req && reqin)
599 {
600 derbio = BIO_new_file(reqin, "rb");
601 if (!derbio)
602 {
603 BIO_printf(bio_err, "Error Opening OCSP request file\n");
604 goto end;
605 }
606 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
607 BIO_free(derbio);
608 if(!req)
609 {
610 BIO_printf(bio_err, "Error reading OCSP request\n");
611 goto end;
612 }
613 }
614
615 if (!req && port)
616 {
617 acbio = init_responder(port);
618 if (!acbio)
619 goto end;
620 }
621
622 if (rsignfile && !rdb)
623 {
624 if (!rkeyfile) rkeyfile = rsignfile;
625 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
626 NULL, e, "responder certificate");
627 if (!rsigner)
628 {
629 BIO_printf(bio_err, "Error loading responder certificate\n");
630 goto end;
631 }
632 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
633 NULL, e, "CA certificate");
634 if (rcertfile)
635 {
636 rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
637 NULL, e, "responder other certificates");
638 if (!rother) goto end;
639 }
640 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
641 "responder private key");
642 if (!rkey)
643 goto end;
644 }
645 if(acbio)
646 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
647
648 redo_accept:
649
650 if (acbio)
651 {
652 if (!do_responder(&req, &cbio, acbio, port))
653 goto end;
654 if (!req)
655 {
656 resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
657 send_ocsp_response(cbio, resp);
658 goto done_resp;
659 }
660 }
661
662 if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
663 {
664 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
665 goto end;
666 }
667
668 if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
669
670 if (signfile)
671 {
672 if (!keyfile) keyfile = signfile;
673 signer = load_cert(bio_err, signfile, FORMAT_PEM,
674 NULL, e, "signer certificate");
675 if (!signer)
676 {
677 BIO_printf(bio_err, "Error loading signer certificate\n");
678 goto end;
679 }
680 if (sign_certfile)
681 {
682 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
683 NULL, e, "signer certificates");
684 if (!sign_other) goto end;
685 }
686 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
687 "signer private key");
688 if (!key)
689 goto end;
690
691 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
692 {
693 BIO_printf(bio_err, "Error signing OCSP request\n");
694 goto end;
695 }
696 }
697
698 if (req_text && req) OCSP_REQUEST_print(out, req, 0);
699
700 if (reqout)
701 {
702 derbio = BIO_new_file(reqout, "wb");
703 if(!derbio)
704 {
705 BIO_printf(bio_err, "Error opening file %s\n", reqout);
706 goto end;
707 }
708 i2d_OCSP_REQUEST_bio(derbio, req);
709 BIO_free(derbio);
710 }
711
712 if (ridx_filename && (!rkey || !rsigner || !rca_cert))
713 {
714 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
715 goto end;
716 }
717
718 if (ridx_filename && !rdb)
719 {
720 rdb = load_index(ridx_filename, NULL);
721 if (!rdb) goto end;
722 if (!index_index(rdb)) goto end;
723 }
724
725 if (rdb)
726 {
727 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
728 if (cbio)
729 send_ocsp_response(cbio, resp);
730 }
731 else if (host)
732 {
733 #ifndef OPENSSL_NO_SOCK
734 resp = process_responder(bio_err, req, host, path,
735 port, use_ssl, req_timeout);
736 if (!resp)
737 goto end;
738 #else
739 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
740 goto end;
741 #endif
742 }
743 else if (respin)
744 {
745 derbio = BIO_new_file(respin, "rb");
746 if (!derbio)
747 {
748 BIO_printf(bio_err, "Error Opening OCSP response file\n");
749 goto end;
750 }
751 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
752 BIO_free(derbio);
753 if(!resp)
754 {
755 BIO_printf(bio_err, "Error reading OCSP response\n");
756 goto end;
757 }
758
759 }
760 else
761 {
762 ret = 0;
763 goto end;
764 }
765
766 done_resp:
767
768 if (respout)
769 {
770 derbio = BIO_new_file(respout, "wb");
771 if(!derbio)
772 {
773 BIO_printf(bio_err, "Error opening file %s\n", respout);
774 goto end;
775 }
776 i2d_OCSP_RESPONSE_bio(derbio, resp);
777 BIO_free(derbio);
778 }
779
780 i = OCSP_response_status(resp);
781
782 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
783 {
784 BIO_printf(out, "Responder Error: %s (%d)\n",
785 OCSP_response_status_str(i), i);
786 if (ignore_err)
787 goto redo_accept;
788 ret = 0;
789 goto end;
790 }
791
792 if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
793
794 /* If running as responder don't verify our own response */
795 if (cbio)
796 {
797 if (accept_count > 0)
798 accept_count--;
799 /* Redo if more connections needed */
800 if (accept_count)
801 {
802 BIO_free_all(cbio);
803 cbio = NULL;
804 OCSP_REQUEST_free(req);
805 req = NULL;
806 OCSP_RESPONSE_free(resp);
807 resp = NULL;
808 goto redo_accept;
809 }
810 goto end;
811 }
812
813 if (!store)
814 store = setup_verify(bio_err, CAfile, CApath);
815 if (!store)
816 goto end;
817 if (verify_certfile)
818 {
819 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
820 NULL, e, "validator certificate");
821 if (!verify_other) goto end;
822 }
823
824 bs = OCSP_response_get1_basic(resp);
825
826 if (!bs)
827 {
828 BIO_printf(bio_err, "Error parsing response\n");
829 goto end;
830 }
831
832 if (!noverify)
833 {
834 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
835 {
836 if (i == -1)
837 BIO_printf(bio_err, "WARNING: no nonce in response\n");
838 else
839 {
840 BIO_printf(bio_err, "Nonce Verify error\n");
841 goto end;
842 }
843 }
844
845 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
846 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
847
848 if(i <= 0)
849 {
850 BIO_printf(bio_err, "Response Verify Failure\n");
851 ERR_print_errors(bio_err);
852 }
853 else
854 BIO_printf(bio_err, "Response verify OK\n");
855
856 }
857
858 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
859 goto end;
860
861 ret = 0;
862
863 end:
864 ERR_print_errors(bio_err);
865 X509_free(signer);
866 X509_STORE_free(store);
867 EVP_PKEY_free(key);
868 EVP_PKEY_free(rkey);
869 X509_free(issuer);
870 X509_free(cert);
871 X509_free(rsigner);
872 X509_free(rca_cert);
873 free_index(rdb);
874 BIO_free_all(cbio);
875 BIO_free_all(acbio);
876 BIO_free(out);
877 OCSP_REQUEST_free(req);
878 OCSP_RESPONSE_free(resp);
879 OCSP_BASICRESP_free(bs);
880 sk_free(reqnames);
881 sk_OCSP_CERTID_free(ids);
882 sk_X509_pop_free(sign_other, X509_free);
883 sk_X509_pop_free(verify_other, X509_free);
884
885 if (use_ssl != -1)
886 {
887 OPENSSL_free(host);
888 OPENSSL_free(port);
889 OPENSSL_free(path);
890 }
891
892 OPENSSL_EXIT(ret);
893 }
894
895 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
896 STACK_OF(OCSP_CERTID) *ids)
897 {
898 OCSP_CERTID *id;
899 if(!issuer)
900 {
901 BIO_printf(bio_err, "No issuer certificate specified\n");
902 return 0;
903 }
904 if(!*req) *req = OCSP_REQUEST_new();
905 if(!*req) goto err;
906 id = OCSP_cert_to_id(cert_id_md, cert, issuer);
907 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
908 if(!OCSP_request_add0_id(*req, id)) goto err;
909 return 1;
910
911 err:
912 BIO_printf(bio_err, "Error Creating OCSP request\n");
913 return 0;
914 }
915
916 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
917 STACK_OF(OCSP_CERTID) *ids)
918 {
919 OCSP_CERTID *id;
920 X509_NAME *iname;
921 ASN1_BIT_STRING *ikey;
922 ASN1_INTEGER *sno;
923 if(!issuer)
924 {
925 BIO_printf(bio_err, "No issuer certificate specified\n");
926 return 0;
927 }
928 if(!*req) *req = OCSP_REQUEST_new();
929 if(!*req) goto err;
930 iname = X509_get_subject_name(issuer);
931 ikey = X509_get0_pubkey_bitstr(issuer);
932 sno = s2i_ASN1_INTEGER(NULL, serial);
933 if(!sno)
934 {
935 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
936 return 0;
937 }
938 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
939 ASN1_INTEGER_free(sno);
940 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
941 if(!OCSP_request_add0_id(*req, id)) goto err;
942 return 1;
943
944 err:
945 BIO_printf(bio_err, "Error Creating OCSP request\n");
946 return 0;
947 }
948
949 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
950 STACK *names, STACK_OF(OCSP_CERTID) *ids,
951 long nsec, long maxage)
952 {
953 OCSP_CERTID *id;
954 char *name;
955 int i;
956
957 int status, reason;
958
959 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
960
961 if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
962 return 1;
963
964 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
965 {
966 id = sk_OCSP_CERTID_value(ids, i);
967 name = sk_value(names, i);
968 BIO_printf(out, "%s: ", name);
969
970 if(!OCSP_resp_find_status(bs, id, &status, &reason,
971 &rev, &thisupd, &nextupd))
972 {
973 BIO_puts(out, "ERROR: No Status found.\n");
974 continue;
975 }
976
977 /* Check validity: if invalid write to output BIO so we
978 * know which response this refers to.
979 */
980 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
981 {
982 BIO_puts(out, "WARNING: Status times invalid.\n");
983 ERR_print_errors(out);
984 }
985 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
986
987 BIO_puts(out, "\tThis Update: ");
988 ASN1_GENERALIZEDTIME_print(out, thisupd);
989 BIO_puts(out, "\n");
990
991 if(nextupd)
992 {
993 BIO_puts(out, "\tNext Update: ");
994 ASN1_GENERALIZEDTIME_print(out, nextupd);
995 BIO_puts(out, "\n");
996 }
997
998 if (status != V_OCSP_CERTSTATUS_REVOKED)
999 continue;
1000
1001 if (reason != -1)
1002 BIO_printf(out, "\tReason: %s\n",
1003 OCSP_crl_reason_str(reason));
1004
1005 BIO_puts(out, "\tRevocation Time: ");
1006 ASN1_GENERALIZEDTIME_print(out, rev);
1007 BIO_puts(out, "\n");
1008 }
1009
1010 return 1;
1011 }
1012
1013
1014 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1015 X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1016 STACK_OF(X509) *rother, unsigned long flags,
1017 int nmin, int ndays)
1018 {
1019 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1020 OCSP_CERTID *cid, *ca_id = NULL;
1021 OCSP_BASICRESP *bs = NULL;
1022 int i, id_count, ret = 1;
1023
1024 id_count = OCSP_request_onereq_count(req);
1025
1026 if (id_count <= 0)
1027 {
1028 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1029 goto end;
1030 }
1031
1032
1033 bs = OCSP_BASICRESP_new();
1034 thisupd = X509_gmtime_adj(NULL, 0);
1035 if (ndays != -1)
1036 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1037
1038 /* Examine each certificate id in the request */
1039 for (i = 0; i < id_count; i++)
1040 {
1041 OCSP_ONEREQ *one;
1042 ASN1_INTEGER *serial;
1043 char **inf;
1044 ASN1_OBJECT *cert_id_md_oid;
1045 const EVP_MD *cert_id_md;
1046 one = OCSP_request_onereq_get0(req, i);
1047 cid = OCSP_onereq_get0_id(one);
1048
1049 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1050
1051 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1052 if (! cert_id_md)
1053 {
1054 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1055 NULL);
1056 goto end;
1057 }
1058 if (ca_id) OCSP_CERTID_free(ca_id);
1059 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1060
1061 /* Is this request about our CA? */
1062 if (OCSP_id_issuer_cmp(ca_id, cid))
1063 {
1064 OCSP_basic_add1_status(bs, cid,
1065 V_OCSP_CERTSTATUS_UNKNOWN,
1066 0, NULL,
1067 thisupd, nextupd);
1068 continue;
1069 }
1070 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1071 inf = lookup_serial(db, serial);
1072 if (!inf)
1073 OCSP_basic_add1_status(bs, cid,
1074 V_OCSP_CERTSTATUS_UNKNOWN,
1075 0, NULL,
1076 thisupd, nextupd);
1077 else if (inf[DB_type][0] == DB_TYPE_VAL)
1078 OCSP_basic_add1_status(bs, cid,
1079 V_OCSP_CERTSTATUS_GOOD,
1080 0, NULL,
1081 thisupd, nextupd);
1082 else if (inf[DB_type][0] == DB_TYPE_REV)
1083 {
1084 ASN1_OBJECT *inst = NULL;
1085 ASN1_TIME *revtm = NULL;
1086 ASN1_GENERALIZEDTIME *invtm = NULL;
1087 OCSP_SINGLERESP *single;
1088 int reason = -1;
1089 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1090 single = OCSP_basic_add1_status(bs, cid,
1091 V_OCSP_CERTSTATUS_REVOKED,
1092 reason, revtm,
1093 thisupd, nextupd);
1094 if (invtm)
1095 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1096 else if (inst)
1097 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1098 ASN1_OBJECT_free(inst);
1099 ASN1_TIME_free(revtm);
1100 ASN1_GENERALIZEDTIME_free(invtm);
1101 }
1102 }
1103
1104 OCSP_copy_nonce(bs, req);
1105
1106 OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags);
1107
1108 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1109
1110 end:
1111 ASN1_TIME_free(thisupd);
1112 ASN1_TIME_free(nextupd);
1113 OCSP_CERTID_free(ca_id);
1114 OCSP_BASICRESP_free(bs);
1115 return ret;
1116
1117 }
1118
1119 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1120 {
1121 int i;
1122 BIGNUM *bn = NULL;
1123 char *itmp, *row[DB_NUMBER],**rrow;
1124 for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1125 bn = ASN1_INTEGER_to_BN(ser,NULL);
1126 OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1127 if (BN_is_zero(bn))
1128 itmp = BUF_strdup("00");
1129 else
1130 itmp = BN_bn2hex(bn);
1131 row[DB_serial] = itmp;
1132 BN_free(bn);
1133 rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1134 OPENSSL_free(itmp);
1135 return rrow;
1136 }
1137
1138 /* Quick and dirty OCSP server: read in and parse input request */
1139
1140 static BIO *init_responder(char *port)
1141 {
1142 BIO *acbio = NULL, *bufbio = NULL;
1143 bufbio = BIO_new(BIO_f_buffer());
1144 if (!bufbio)
1145 goto err;
1146 #ifndef OPENSSL_NO_SOCK
1147 acbio = BIO_new_accept(port);
1148 #else
1149 BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1150 #endif
1151 if (!acbio)
1152 goto err;
1153 BIO_set_accept_bios(acbio, bufbio);
1154 bufbio = NULL;
1155
1156 if (BIO_do_accept(acbio) <= 0)
1157 {
1158 BIO_printf(bio_err, "Error setting up accept BIO\n");
1159 ERR_print_errors(bio_err);
1160 goto err;
1161 }
1162
1163 return acbio;
1164
1165 err:
1166 BIO_free_all(acbio);
1167 BIO_free(bufbio);
1168 return NULL;
1169 }
1170
1171 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1172 {
1173 int have_post = 0, len;
1174 OCSP_REQUEST *req = NULL;
1175 char inbuf[1024];
1176 BIO *cbio = NULL;
1177
1178 if (BIO_do_accept(acbio) <= 0)
1179 {
1180 BIO_printf(bio_err, "Error accepting connection\n");
1181 ERR_print_errors(bio_err);
1182 return 0;
1183 }
1184
1185 cbio = BIO_pop(acbio);
1186 *pcbio = cbio;
1187
1188 for(;;)
1189 {
1190 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1191 if (len <= 0)
1192 return 1;
1193 /* Look for "POST" signalling start of query */
1194 if (!have_post)
1195 {
1196 if(strncmp(inbuf, "POST", 4))
1197 {
1198 BIO_printf(bio_err, "Invalid request\n");
1199 return 1;
1200 }
1201 have_post = 1;
1202 }
1203 /* Look for end of headers */
1204 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1205 break;
1206 }
1207
1208 /* Try to read OCSP request */
1209
1210 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1211
1212 if (!req)
1213 {
1214 BIO_printf(bio_err, "Error parsing OCSP request\n");
1215 ERR_print_errors(bio_err);
1216 }
1217
1218 *preq = req;
1219
1220 return 1;
1221
1222 }
1223
1224 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1225 {
1226 char http_resp[] =
1227 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1228 "Content-Length: %d\r\n\r\n";
1229 if (!cbio)
1230 return 0;
1231 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1232 i2d_OCSP_RESPONSE_bio(cbio, resp);
1233 (void)BIO_flush(cbio);
1234 return 1;
1235 }
1236
1237 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1238 OCSP_REQUEST *req, int req_timeout)
1239 {
1240 int fd;
1241 int rv;
1242 OCSP_REQ_CTX *ctx = NULL;
1243 OCSP_RESPONSE *rsp = NULL;
1244 fd_set confds;
1245 struct timeval tv;
1246
1247 if (req_timeout != -1)
1248 BIO_set_nbio(cbio, 1);
1249
1250 rv = BIO_do_connect(cbio);
1251
1252 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1253 {
1254 BIO_puts(err, "Error connecting BIO\n");
1255 return NULL;
1256 }
1257
1258 if (req_timeout == -1)
1259 return OCSP_sendreq_bio(cbio, path, req);
1260
1261 if (BIO_get_fd(cbio, &fd) <= 0)
1262 {
1263 BIO_puts(err, "Can't get connection fd\n");
1264 goto err;
1265 }
1266
1267 if (rv <= 0)
1268 {
1269 FD_ZERO(&confds);
1270 openssl_fdset(fd, &confds);
1271 tv.tv_usec = 0;
1272 tv.tv_sec = req_timeout;
1273 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1274 if (rv == 0)
1275 {
1276 BIO_puts(err, "Timeout on connect\n");
1277 return NULL;
1278 }
1279 }
1280
1281
1282 ctx = OCSP_sendreq_new(cbio, path, req, -1);
1283 if (!ctx)
1284 return NULL;
1285
1286 for (;;)
1287 {
1288 rv = OCSP_sendreq_nbio(&rsp, ctx);
1289 if (rv != -1)
1290 break;
1291 FD_ZERO(&confds);
1292 openssl_fdset(fd, &confds);
1293 tv.tv_usec = 0;
1294 tv.tv_sec = req_timeout;
1295 if (BIO_should_read(cbio))
1296 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1297 else if (BIO_should_write(cbio))
1298 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1299 else
1300 {
1301 BIO_puts(err, "Unexpected retry condition\n");
1302 goto err;
1303 }
1304 if (rv == 0)
1305 {
1306 BIO_puts(err, "Timeout on request\n");
1307 break;
1308 }
1309 if (rv == -1)
1310 {
1311 BIO_puts(err, "Select error\n");
1312 break;
1313 }
1314
1315 }
1316 err:
1317 if (ctx)
1318 OCSP_REQ_CTX_free(ctx);
1319
1320 return rsp;
1321 }
1322
1323 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1324 char *host, char *path, char *port, int use_ssl,
1325 int req_timeout)
1326 {
1327 BIO *cbio = NULL;
1328 SSL_CTX *ctx = NULL;
1329 OCSP_RESPONSE *resp = NULL;
1330 cbio = BIO_new_connect(host);
1331 if (!cbio)
1332 {
1333 BIO_printf(err, "Error creating connect BIO\n");
1334 goto end;
1335 }
1336 if (port) BIO_set_conn_port(cbio, port);
1337 if (use_ssl == 1)
1338 {
1339 BIO *sbio;
1340 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1341 ctx = SSL_CTX_new(SSLv23_client_method());
1342 #elif !defined(OPENSSL_NO_SSL3)
1343 ctx = SSL_CTX_new(SSLv3_client_method());
1344 #elif !defined(OPENSSL_NO_SSL2)
1345 ctx = SSL_CTX_new(SSLv2_client_method());
1346 #else
1347 BIO_printf(err, "SSL is disabled\n");
1348 goto end;
1349 #endif
1350 if (ctx == NULL)
1351 {
1352 BIO_printf(err, "Error creating SSL context.\n");
1353 goto end;
1354 }
1355 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1356 sbio = BIO_new_ssl(ctx, 1);
1357 cbio = BIO_push(sbio, cbio);
1358 }
1359 resp = query_responder(err, cbio, path, req, req_timeout);
1360 if (!resp)
1361 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1362 end:
1363 if (ctx)
1364 SSL_CTX_free(ctx);
1365 if (cbio)
1366 BIO_free_all(cbio);
1367 return resp;
1368 }
1369
1370 #endif
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