1 /* ocsp.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2000.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58 #ifndef OPENSSL_NO_OCSP
59
60 #include <stdio.h>
61 #include <string.h>
62 #include "apps.h"
63 #include <openssl/pem.h>
64 #include <openssl/ocsp.h>
65 #include <openssl/err.h>
66 #include <openssl/ssl.h>
67 #include <openssl/bn.h>
68
69 /* Maximum leeway in validity period: default 5 minutes */
70 #define MAX_VALIDITY_PERIOD (5 * 60)
71
72 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
73 STACK_OF(OCSP_CERTID) *ids);
74 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
75 STACK_OF(OCSP_CERTID) *ids);
76 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
77 STACK *names, STACK_OF(OCSP_CERTID) *ids,
78 long nsec, long maxage);
79
80 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
81 X509 *ca, X509 *rcert, EVP_PKEY *rkey,
82 STACK_OF(X509) *rother, unsigned long flags,
83 int nmin, int ndays);
84
85 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
86 static BIO *init_responder(char *port);
87 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
88 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
89
90 #undef PROG
91 #define PROG ocsp_main
92
93 int MAIN(int, char **);
94
MAIN(int argc,char ** argv)95 int MAIN(int argc, char **argv)
96 {
97 ENGINE *e = NULL;
98 char **args;
99 char *host = NULL, *port = NULL, *path = "/";
100 char *reqin = NULL, *respin = NULL;
101 char *reqout = NULL, *respout = NULL;
102 char *signfile = NULL, *keyfile = NULL;
103 char *rsignfile = NULL, *rkeyfile = NULL;
104 char *outfile = NULL;
105 int add_nonce = 1, noverify = 0, use_ssl = -1;
106 OCSP_REQUEST *req = NULL;
107 OCSP_RESPONSE *resp = NULL;
108 OCSP_BASICRESP *bs = NULL;
109 X509 *issuer = NULL, *cert = NULL;
110 X509 *signer = NULL, *rsigner = NULL;
111 EVP_PKEY *key = NULL, *rkey = NULL;
112 BIO *acbio = NULL, *cbio = NULL;
113 BIO *derbio = NULL;
114 BIO *out = NULL;
115 int req_text = 0, resp_text = 0;
116 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
117 char *CAfile = NULL, *CApath = NULL;
118 X509_STORE *store = NULL;
119 SSL_CTX *ctx = NULL;
120 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
121 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
122 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
123 int ret = 1;
124 int accept_count = -1;
125 int badarg = 0;
126 int i;
127 int ignore_err = 0;
128 STACK *reqnames = NULL;
129 STACK_OF(OCSP_CERTID) *ids = NULL;
130
131 X509 *rca_cert = NULL;
132 char *ridx_filename = NULL;
133 char *rca_filename = NULL;
134 CA_DB *rdb = NULL;
135 int nmin = 0, ndays = -1;
136
137 if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
138
139 if (!load_config(bio_err, NULL))
140 goto end;
141 SSL_load_error_strings();
142 args = argv + 1;
143 reqnames = sk_new_null();
144 ids = sk_OCSP_CERTID_new_null();
145 while (!badarg && *args && *args[0] == '-')
146 {
147 if (!strcmp(*args, "-out"))
148 {
149 if (args[1])
150 {
151 args++;
152 outfile = *args;
153 }
154 else badarg = 1;
155 }
156 else if (!strcmp(*args, "-url"))
157 {
158 if (args[1])
159 {
160 args++;
161 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
162 {
163 BIO_printf(bio_err, "Error parsing URL\n");
164 badarg = 1;
165 }
166 }
167 else badarg = 1;
168 }
169 else if (!strcmp(*args, "-host"))
170 {
171 if (args[1])
172 {
173 args++;
174 host = *args;
175 }
176 else badarg = 1;
177 }
178 else if (!strcmp(*args, "-port"))
179 {
180 if (args[1])
181 {
182 args++;
183 port = *args;
184 }
185 else badarg = 1;
186 }
187 else if (!strcmp(*args, "-ignore_err"))
188 ignore_err = 1;
189 else if (!strcmp(*args, "-noverify"))
190 noverify = 1;
191 else if (!strcmp(*args, "-nonce"))
192 add_nonce = 2;
193 else if (!strcmp(*args, "-no_nonce"))
194 add_nonce = 0;
195 else if (!strcmp(*args, "-resp_no_certs"))
196 rflags |= OCSP_NOCERTS;
197 else if (!strcmp(*args, "-resp_key_id"))
198 rflags |= OCSP_RESPID_KEY;
199 else if (!strcmp(*args, "-no_certs"))
200 sign_flags |= OCSP_NOCERTS;
201 else if (!strcmp(*args, "-no_signature_verify"))
202 verify_flags |= OCSP_NOSIGS;
203 else if (!strcmp(*args, "-no_cert_verify"))
204 verify_flags |= OCSP_NOVERIFY;
205 else if (!strcmp(*args, "-no_chain"))
206 verify_flags |= OCSP_NOCHAIN;
207 else if (!strcmp(*args, "-no_cert_checks"))
208 verify_flags |= OCSP_NOCHECKS;
209 else if (!strcmp(*args, "-no_explicit"))
210 verify_flags |= OCSP_NOEXPLICIT;
211 else if (!strcmp(*args, "-trust_other"))
212 verify_flags |= OCSP_TRUSTOTHER;
213 else if (!strcmp(*args, "-no_intern"))
214 verify_flags |= OCSP_NOINTERN;
215 else if (!strcmp(*args, "-text"))
216 {
217 req_text = 1;
218 resp_text = 1;
219 }
220 else if (!strcmp(*args, "-req_text"))
221 req_text = 1;
222 else if (!strcmp(*args, "-resp_text"))
223 resp_text = 1;
224 else if (!strcmp(*args, "-reqin"))
225 {
226 if (args[1])
227 {
228 args++;
229 reqin = *args;
230 }
231 else badarg = 1;
232 }
233 else if (!strcmp(*args, "-respin"))
234 {
235 if (args[1])
236 {
237 args++;
238 respin = *args;
239 }
240 else badarg = 1;
241 }
242 else if (!strcmp(*args, "-signer"))
243 {
244 if (args[1])
245 {
246 args++;
247 signfile = *args;
248 }
249 else badarg = 1;
250 }
251 else if (!strcmp (*args, "-VAfile"))
252 {
253 if (args[1])
254 {
255 args++;
256 verify_certfile = *args;
257 verify_flags |= OCSP_TRUSTOTHER;
258 }
259 else badarg = 1;
260 }
261 else if (!strcmp(*args, "-sign_other"))
262 {
263 if (args[1])
264 {
265 args++;
266 sign_certfile = *args;
267 }
268 else badarg = 1;
269 }
270 else if (!strcmp(*args, "-verify_other"))
271 {
272 if (args[1])
273 {
274 args++;
275 verify_certfile = *args;
276 }
277 else badarg = 1;
278 }
279 else if (!strcmp (*args, "-CAfile"))
280 {
281 if (args[1])
282 {
283 args++;
284 CAfile = *args;
285 }
286 else badarg = 1;
287 }
288 else if (!strcmp (*args, "-CApath"))
289 {
290 if (args[1])
291 {
292 args++;
293 CApath = *args;
294 }
295 else badarg = 1;
296 }
297 else if (!strcmp (*args, "-validity_period"))
298 {
299 if (args[1])
300 {
301 args++;
302 nsec = atol(*args);
303 if (nsec < 0)
304 {
305 BIO_printf(bio_err,
306 "Illegal validity period %s\n",
307 *args);
308 badarg = 1;
309 }
310 }
311 else badarg = 1;
312 }
313 else if (!strcmp (*args, "-status_age"))
314 {
315 if (args[1])
316 {
317 args++;
318 maxage = atol(*args);
319 if (maxage < 0)
320 {
321 BIO_printf(bio_err,
322 "Illegal validity age %s\n",
323 *args);
324 badarg = 1;
325 }
326 }
327 else badarg = 1;
328 }
329 else if (!strcmp(*args, "-signkey"))
330 {
331 if (args[1])
332 {
333 args++;
334 keyfile = *args;
335 }
336 else badarg = 1;
337 }
338 else if (!strcmp(*args, "-reqout"))
339 {
340 if (args[1])
341 {
342 args++;
343 reqout = *args;
344 }
345 else badarg = 1;
346 }
347 else if (!strcmp(*args, "-respout"))
348 {
349 if (args[1])
350 {
351 args++;
352 respout = *args;
353 }
354 else badarg = 1;
355 }
356 else if (!strcmp(*args, "-path"))
357 {
358 if (args[1])
359 {
360 args++;
361 path = *args;
362 }
363 else badarg = 1;
364 }
365 else if (!strcmp(*args, "-issuer"))
366 {
367 if (args[1])
368 {
369 args++;
370 X509_free(issuer);
371 issuer = load_cert(bio_err, *args, FORMAT_PEM,
372 NULL, e, "issuer certificate");
373 if(!issuer) goto end;
374 }
375 else badarg = 1;
376 }
377 else if (!strcmp (*args, "-cert"))
378 {
379 if (args[1])
380 {
381 args++;
382 X509_free(cert);
383 cert = load_cert(bio_err, *args, FORMAT_PEM,
384 NULL, e, "certificate");
385 if(!cert) goto end;
386 if(!add_ocsp_cert(&req, cert, issuer, ids))
387 goto end;
388 if(!sk_push(reqnames, *args))
389 goto end;
390 }
391 else badarg = 1;
392 }
393 else if (!strcmp(*args, "-serial"))
394 {
395 if (args[1])
396 {
397 args++;
398 if(!add_ocsp_serial(&req, *args, issuer, ids))
399 goto end;
400 if(!sk_push(reqnames, *args))
401 goto end;
402 }
403 else badarg = 1;
404 }
405 else if (!strcmp(*args, "-index"))
406 {
407 if (args[1])
408 {
409 args++;
410 ridx_filename = *args;
411 }
412 else badarg = 1;
413 }
414 else if (!strcmp(*args, "-CA"))
415 {
416 if (args[1])
417 {
418 args++;
419 rca_filename = *args;
420 }
421 else badarg = 1;
422 }
423 else if (!strcmp (*args, "-nmin"))
424 {
425 if (args[1])
426 {
427 args++;
428 nmin = atol(*args);
429 if (nmin < 0)
430 {
431 BIO_printf(bio_err,
432 "Illegal update period %s\n",
433 *args);
434 badarg = 1;
435 }
436 }
437 if (ndays == -1)
438 ndays = 0;
439 else badarg = 1;
440 }
441 else if (!strcmp (*args, "-nrequest"))
442 {
443 if (args[1])
444 {
445 args++;
446 accept_count = atol(*args);
447 if (accept_count < 0)
448 {
449 BIO_printf(bio_err,
450 "Illegal accept count %s\n",
451 *args);
452 badarg = 1;
453 }
454 }
455 else badarg = 1;
456 }
457 else if (!strcmp (*args, "-ndays"))
458 {
459 if (args[1])
460 {
461 args++;
462 ndays = atol(*args);
463 if (ndays < 0)
464 {
465 BIO_printf(bio_err,
466 "Illegal update period %s\n",
467 *args);
468 badarg = 1;
469 }
470 }
471 else badarg = 1;
472 }
473 else if (!strcmp(*args, "-rsigner"))
474 {
475 if (args[1])
476 {
477 args++;
478 rsignfile = *args;
479 }
480 else badarg = 1;
481 }
482 else if (!strcmp(*args, "-rkey"))
483 {
484 if (args[1])
485 {
486 args++;
487 rkeyfile = *args;
488 }
489 else badarg = 1;
490 }
491 else if (!strcmp(*args, "-rother"))
492 {
493 if (args[1])
494 {
495 args++;
496 rcertfile = *args;
497 }
498 else badarg = 1;
499 }
500 else badarg = 1;
501 args++;
502 }
503
504 /* Have we anything to do? */
505 if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
506
507 if (badarg)
508 {
509 BIO_printf (bio_err, "OCSP utility\n");
510 BIO_printf (bio_err, "Usage ocsp [options]\n");
511 BIO_printf (bio_err, "where options are\n");
512 BIO_printf (bio_err, "-out file output filename\n");
513 BIO_printf (bio_err, "-issuer file issuer certificate\n");
514 BIO_printf (bio_err, "-cert file certificate to check\n");
515 BIO_printf (bio_err, "-serial n serial number to check\n");
516 BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n");
517 BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n");
518 BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n");
519 BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n");
520 BIO_printf (bio_err, "-req_text print text form of request\n");
521 BIO_printf (bio_err, "-resp_text print text form of response\n");
522 BIO_printf (bio_err, "-text print text form of request and response\n");
523 BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n");
524 BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
525 BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n");
526 BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n");
527 BIO_printf (bio_err, "-nonce add OCSP nonce to request\n");
528 BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n");
529 BIO_printf (bio_err, "-url URL OCSP responder URL\n");
530 BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n");
531 BIO_printf (bio_err, "-path path to use in OCSP request\n");
532 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
533 BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
534 BIO_printf (bio_err, "-VAfile file validator certificates file\n");
535 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
536 BIO_printf (bio_err, "-status_age n maximum status age in seconds\n");
537 BIO_printf (bio_err, "-noverify don't verify response at all\n");
538 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
539 BIO_printf (bio_err, "-trust_other don't verify additional certificates\n");
540 BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n");
541 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
542 BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n");
543 BIO_printf (bio_err, "-no_chain don't chain verify response\n");
544 BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n");
545 BIO_printf (bio_err, "-port num port to run responder on\n");
546 BIO_printf (bio_err, "-index file certificate status index file\n");
547 BIO_printf (bio_err, "-CA file CA certificate\n");
548 BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n");
549 BIO_printf (bio_err, "-rkey file responder key to sign responses with\n");
550 BIO_printf (bio_err, "-rother file other certificates to include in response\n");
551 BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n");
552 BIO_printf (bio_err, "-nmin n number of minutes before next update\n");
553 BIO_printf (bio_err, "-ndays n number of days before next update\n");
554 BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n");
555 BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n");
556 goto end;
557 }
558
559 if(outfile) out = BIO_new_file(outfile, "w");
560 else out = BIO_new_fp(stdout, BIO_NOCLOSE);
561
562 if(!out)
563 {
564 BIO_printf(bio_err, "Error opening output file\n");
565 goto end;
566 }
567
568 if (!req && (add_nonce != 2)) add_nonce = 0;
569
570 if (!req && reqin)
571 {
572 derbio = BIO_new_file(reqin, "rb");
573 if (!derbio)
574 {
575 BIO_printf(bio_err, "Error Opening OCSP request file\n");
576 goto end;
577 }
578 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
579 BIO_free(derbio);
580 if(!req)
581 {
582 BIO_printf(bio_err, "Error reading OCSP request\n");
583 goto end;
584 }
585 }
586
587 if (!req && port)
588 {
589 acbio = init_responder(port);
590 if (!acbio)
591 goto end;
592 }
593
594 if (rsignfile && !rdb)
595 {
596 if (!rkeyfile) rkeyfile = rsignfile;
597 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
598 NULL, e, "responder certificate");
599 if (!rsigner)
600 {
601 BIO_printf(bio_err, "Error loading responder certificate\n");
602 goto end;
603 }
604 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
605 NULL, e, "CA certificate");
606 if (rcertfile)
607 {
608 rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
609 NULL, e, "responder other certificates");
610 if (!rother) goto end;
611 }
612 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
613 "responder private key");
614 if (!rkey)
615 goto end;
616 }
617 if(acbio)
618 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
619
620 redo_accept:
621
622 if (acbio)
623 {
624 if (!do_responder(&req, &cbio, acbio, port))
625 goto end;
626 if (!req)
627 {
628 resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
629 send_ocsp_response(cbio, resp);
630 goto done_resp;
631 }
632 }
633
634 if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
635 {
636 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
637 goto end;
638 }
639
640 if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
641
642 if (signfile)
643 {
644 if (!keyfile) keyfile = signfile;
645 signer = load_cert(bio_err, signfile, FORMAT_PEM,
646 NULL, e, "signer certificate");
647 if (!signer)
648 {
649 BIO_printf(bio_err, "Error loading signer certificate\n");
650 goto end;
651 }
652 if (sign_certfile)
653 {
654 sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
655 NULL, e, "signer certificates");
656 if (!sign_other) goto end;
657 }
658 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
659 "signer private key");
660 if (!key)
661 goto end;
662 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
663 {
664 BIO_printf(bio_err, "Error signing OCSP request\n");
665 goto end;
666 }
667 }
668
669 if (req_text && req) OCSP_REQUEST_print(out, req, 0);
670
671 if (reqout)
672 {
673 derbio = BIO_new_file(reqout, "wb");
674 if(!derbio)
675 {
676 BIO_printf(bio_err, "Error opening file %s\n", reqout);
677 goto end;
678 }
679 i2d_OCSP_REQUEST_bio(derbio, req);
680 BIO_free(derbio);
681 }
682
683 if (ridx_filename && (!rkey || !rsigner || !rca_cert))
684 {
685 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
686 goto end;
687 }
688
689 if (ridx_filename && !rdb)
690 {
691 rdb = load_index(ridx_filename, NULL);
692 if (!rdb) goto end;
693 if (!index_index(rdb)) goto end;
694 }
695
696 if (rdb)
697 {
698 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
699 if (cbio)
700 send_ocsp_response(cbio, resp);
701 }
702 else if (host)
703 {
704 #ifndef OPENSSL_NO_SOCK
705 cbio = BIO_new_connect(host);
706 #else
707 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
708 goto end;
709 #endif
710 if (!cbio)
711 {
712 BIO_printf(bio_err, "Error creating connect BIO\n");
713 goto end;
714 }
715 if (port) BIO_set_conn_port(cbio, port);
716 if (use_ssl == 1)
717 {
718 BIO *sbio;
719 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
720 ctx = SSL_CTX_new(SSLv23_client_method());
721 #elif !defined(OPENSSL_NO_SSL3)
722 ctx = SSL_CTX_new(SSLv3_client_method());
723 #elif !defined(OPENSSL_NO_SSL2)
724 ctx = SSL_CTX_new(SSLv2_client_method());
725 #else
726 BIO_printf(bio_err, "SSL is disabled\n");
727 goto end;
728 #endif
729 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
730 sbio = BIO_new_ssl(ctx, 1);
731 cbio = BIO_push(sbio, cbio);
732 }
733 if (BIO_do_connect(cbio) <= 0)
734 {
735 BIO_printf(bio_err, "Error connecting BIO\n");
736 goto end;
737 }
738 resp = OCSP_sendreq_bio(cbio, path, req);
739 BIO_free_all(cbio);
740 cbio = NULL;
741 if (!resp)
742 {
743 BIO_printf(bio_err, "Error querying OCSP responsder\n");
744 goto end;
745 }
746 }
747 else if (respin)
748 {
749 derbio = BIO_new_file(respin, "rb");
750 if (!derbio)
751 {
752 BIO_printf(bio_err, "Error Opening OCSP response file\n");
753 goto end;
754 }
755 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
756 BIO_free(derbio);
757 if(!resp)
758 {
759 BIO_printf(bio_err, "Error reading OCSP response\n");
760 goto end;
761 }
762
763 }
764 else
765 {
766 ret = 0;
767 goto end;
768 }
769
770 done_resp:
771
772 if (respout)
773 {
774 derbio = BIO_new_file(respout, "wb");
775 if(!derbio)
776 {
777 BIO_printf(bio_err, "Error opening file %s\n", respout);
778 goto end;
779 }
780 i2d_OCSP_RESPONSE_bio(derbio, resp);
781 BIO_free(derbio);
782 }
783
784 i = OCSP_response_status(resp);
785
786 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
787 {
788 BIO_printf(out, "Responder Error: %s (%d)\n",
789 OCSP_response_status_str(i), i);
790 if (ignore_err)
791 goto redo_accept;
792 ret = 0;
793 goto end;
794 }
795
796 if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
797
798 /* If running as responder don't verify our own response */
799 if (cbio)
800 {
801 if (accept_count > 0)
802 accept_count--;
803 /* Redo if more connections needed */
804 if (accept_count)
805 {
806 BIO_free_all(cbio);
807 cbio = NULL;
808 OCSP_REQUEST_free(req);
809 req = NULL;
810 OCSP_RESPONSE_free(resp);
811 resp = NULL;
812 goto redo_accept;
813 }
814 goto end;
815 }
816
817 if (!store)
818 store = setup_verify(bio_err, CAfile, CApath);
819 if (!store)
820 goto end;
821 if (verify_certfile)
822 {
823 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
824 NULL, e, "validator certificate");
825 if (!verify_other) goto end;
826 }
827
828 bs = OCSP_response_get1_basic(resp);
829
830 if (!bs)
831 {
832 BIO_printf(bio_err, "Error parsing response\n");
833 goto end;
834 }
835
836 if (!noverify)
837 {
838 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
839 {
840 if (i == -1)
841 BIO_printf(bio_err, "WARNING: no nonce in response\n");
842 else
843 {
844 BIO_printf(bio_err, "Nonce Verify error\n");
845 goto end;
846 }
847 }
848
849 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
850 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
851
852 if(i <= 0)
853 {
854 BIO_printf(bio_err, "Response Verify Failure\n");
855 ERR_print_errors(bio_err);
856 }
857 else
858 BIO_printf(bio_err, "Response verify OK\n");
859
860 }
861
862 if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
863 goto end;
864
865 ret = 0;
866
867 end:
868 ERR_print_errors(bio_err);
869 X509_free(signer);
870 X509_STORE_free(store);
871 EVP_PKEY_free(key);
872 EVP_PKEY_free(rkey);
873 X509_free(issuer);
874 X509_free(cert);
875 X509_free(rsigner);
876 X509_free(rca_cert);
877 free_index(rdb);
878 BIO_free_all(cbio);
879 BIO_free_all(acbio);
880 BIO_free(out);
881 OCSP_REQUEST_free(req);
882 OCSP_RESPONSE_free(resp);
883 OCSP_BASICRESP_free(bs);
884 sk_free(reqnames);
885 sk_OCSP_CERTID_free(ids);
886 sk_X509_pop_free(sign_other, X509_free);
887 sk_X509_pop_free(verify_other, X509_free);
888
889 if (use_ssl != -1)
890 {
891 OPENSSL_free(host);
892 OPENSSL_free(port);
893 OPENSSL_free(path);
894 SSL_CTX_free(ctx);
895 }
896
897 OPENSSL_EXIT(ret);
898 }
899
add_ocsp_cert(OCSP_REQUEST ** req,X509 * cert,X509 * issuer,STACK_OF (OCSP_CERTID)* ids)900 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
901 STACK_OF(OCSP_CERTID) *ids)
902 {
903 OCSP_CERTID *id;
904 if(!issuer)
905 {
906 BIO_printf(bio_err, "No issuer certificate specified\n");
907 return 0;
908 }
909 if(!*req) *req = OCSP_REQUEST_new();
910 if(!*req) goto err;
911 id = OCSP_cert_to_id(NULL, cert, issuer);
912 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
913 if(!OCSP_request_add0_id(*req, id)) goto err;
914 return 1;
915
916 err:
917 BIO_printf(bio_err, "Error Creating OCSP request\n");
918 return 0;
919 }
920
add_ocsp_serial(OCSP_REQUEST ** req,char * serial,X509 * issuer,STACK_OF (OCSP_CERTID)* ids)921 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
922 STACK_OF(OCSP_CERTID) *ids)
923 {
924 OCSP_CERTID *id;
925 X509_NAME *iname;
926 ASN1_BIT_STRING *ikey;
927 ASN1_INTEGER *sno;
928 if(!issuer)
929 {
930 BIO_printf(bio_err, "No issuer certificate specified\n");
931 return 0;
932 }
933 if(!*req) *req = OCSP_REQUEST_new();
934 if(!*req) goto err;
935 iname = X509_get_subject_name(issuer);
936 ikey = X509_get0_pubkey_bitstr(issuer);
937 sno = s2i_ASN1_INTEGER(NULL, serial);
938 if(!sno)
939 {
940 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
941 return 0;
942 }
943 id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
944 ASN1_INTEGER_free(sno);
945 if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
946 if(!OCSP_request_add0_id(*req, id)) goto err;
947 return 1;
948
949 err:
950 BIO_printf(bio_err, "Error Creating OCSP request\n");
951 return 0;
952 }
953
print_ocsp_summary(BIO * out,OCSP_BASICRESP * bs,OCSP_REQUEST * req,STACK * names,STACK_OF (OCSP_CERTID)* ids,long nsec,long maxage)954 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
955 STACK *names, STACK_OF(OCSP_CERTID) *ids,
956 long nsec, long maxage)
957 {
958 OCSP_CERTID *id;
959 char *name;
960 int i;
961
962 int status, reason;
963
964 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
965
966 if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
967 return 1;
968
969 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
970 {
971 id = sk_OCSP_CERTID_value(ids, i);
972 name = sk_value(names, i);
973 BIO_printf(out, "%s: ", name);
974
975 if(!OCSP_resp_find_status(bs, id, &status, &reason,
976 &rev, &thisupd, &nextupd))
977 {
978 BIO_puts(out, "ERROR: No Status found.\n");
979 continue;
980 }
981
982 /* Check validity: if invalid write to output BIO so we
983 * know which response this refers to.
984 */
985 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
986 {
987 BIO_puts(out, "WARNING: Status times invalid.\n");
988 ERR_print_errors(out);
989 }
990 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
991
992 BIO_puts(out, "\tThis Update: ");
993 ASN1_GENERALIZEDTIME_print(out, thisupd);
994 BIO_puts(out, "\n");
995
996 if(nextupd)
997 {
998 BIO_puts(out, "\tNext Update: ");
999 ASN1_GENERALIZEDTIME_print(out, nextupd);
1000 BIO_puts(out, "\n");
1001 }
1002
1003 if (status != V_OCSP_CERTSTATUS_REVOKED)
1004 continue;
1005
1006 if (reason != -1)
1007 BIO_printf(out, "\tReason: %s\n",
1008 OCSP_crl_reason_str(reason));
1009
1010 BIO_puts(out, "\tRevocation Time: ");
1011 ASN1_GENERALIZEDTIME_print(out, rev);
1012 BIO_puts(out, "\n");
1013 }
1014
1015 return 1;
1016 }
1017
1018
make_ocsp_response(OCSP_RESPONSE ** resp,OCSP_REQUEST * req,CA_DB * db,X509 * ca,X509 * rcert,EVP_PKEY * rkey,STACK_OF (X509)* rother,unsigned long flags,int nmin,int ndays)1019 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1020 X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1021 STACK_OF(X509) *rother, unsigned long flags,
1022 int nmin, int ndays)
1023 {
1024 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1025 OCSP_CERTID *cid, *ca_id = NULL;
1026 OCSP_BASICRESP *bs = NULL;
1027 int i, id_count, ret = 1;
1028
1029
1030 id_count = OCSP_request_onereq_count(req);
1031
1032 if (id_count <= 0)
1033 {
1034 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1035 goto end;
1036 }
1037
1038 ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
1039
1040 bs = OCSP_BASICRESP_new();
1041 thisupd = X509_gmtime_adj(NULL, 0);
1042 if (ndays != -1)
1043 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1044
1045 /* Examine each certificate id in the request */
1046 for (i = 0; i < id_count; i++)
1047 {
1048 OCSP_ONEREQ *one;
1049 ASN1_INTEGER *serial;
1050 char **inf;
1051 one = OCSP_request_onereq_get0(req, i);
1052 cid = OCSP_onereq_get0_id(one);
1053 /* Is this request about our CA? */
1054 if (OCSP_id_issuer_cmp(ca_id, cid))
1055 {
1056 OCSP_basic_add1_status(bs, cid,
1057 V_OCSP_CERTSTATUS_UNKNOWN,
1058 0, NULL,
1059 thisupd, nextupd);
1060 continue;
1061 }
1062 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1063 inf = lookup_serial(db, serial);
1064 if (!inf)
1065 OCSP_basic_add1_status(bs, cid,
1066 V_OCSP_CERTSTATUS_UNKNOWN,
1067 0, NULL,
1068 thisupd, nextupd);
1069 else if (inf[DB_type][0] == DB_TYPE_VAL)
1070 OCSP_basic_add1_status(bs, cid,
1071 V_OCSP_CERTSTATUS_GOOD,
1072 0, NULL,
1073 thisupd, nextupd);
1074 else if (inf[DB_type][0] == DB_TYPE_REV)
1075 {
1076 ASN1_OBJECT *inst = NULL;
1077 ASN1_TIME *revtm = NULL;
1078 ASN1_GENERALIZEDTIME *invtm = NULL;
1079 OCSP_SINGLERESP *single;
1080 int reason = -1;
1081 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1082 single = OCSP_basic_add1_status(bs, cid,
1083 V_OCSP_CERTSTATUS_REVOKED,
1084 reason, revtm,
1085 thisupd, nextupd);
1086 if (invtm)
1087 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1088 else if (inst)
1089 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1090 ASN1_OBJECT_free(inst);
1091 ASN1_TIME_free(revtm);
1092 ASN1_GENERALIZEDTIME_free(invtm);
1093 }
1094 }
1095
1096 OCSP_copy_nonce(bs, req);
1097
1098 OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
1099
1100 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1101
1102 end:
1103 ASN1_TIME_free(thisupd);
1104 ASN1_TIME_free(nextupd);
1105 OCSP_CERTID_free(ca_id);
1106 OCSP_BASICRESP_free(bs);
1107 return ret;
1108
1109 }
1110
lookup_serial(CA_DB * db,ASN1_INTEGER * ser)1111 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1112 {
1113 int i;
1114 BIGNUM *bn = NULL;
1115 char *itmp, *row[DB_NUMBER],**rrow;
1116 for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1117 bn = ASN1_INTEGER_to_BN(ser,NULL);
1118 if (BN_is_zero(bn))
1119 itmp = BUF_strdup("00");
1120 else
1121 itmp = BN_bn2hex(bn);
1122 row[DB_serial] = itmp;
1123 BN_free(bn);
1124 rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1125 OPENSSL_free(itmp);
1126 return rrow;
1127 }
1128
1129 /* Quick and dirty OCSP server: read in and parse input request */
1130
init_responder(char * port)1131 static BIO *init_responder(char *port)
1132 {
1133 BIO *acbio = NULL, *bufbio = NULL;
1134 bufbio = BIO_new(BIO_f_buffer());
1135 if (!bufbio)
1136 goto err;
1137 #ifndef OPENSSL_NO_SOCK
1138 acbio = BIO_new_accept(port);
1139 #else
1140 BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1141 #endif
1142 if (!acbio)
1143 goto err;
1144 BIO_set_accept_bios(acbio, bufbio);
1145 bufbio = NULL;
1146
1147 if (BIO_do_accept(acbio) <= 0)
1148 {
1149 BIO_printf(bio_err, "Error setting up accept BIO\n");
1150 ERR_print_errors(bio_err);
1151 goto err;
1152 }
1153
1154 return acbio;
1155
1156 err:
1157 BIO_free_all(acbio);
1158 BIO_free(bufbio);
1159 return NULL;
1160 }
1161
do_responder(OCSP_REQUEST ** preq,BIO ** pcbio,BIO * acbio,char * port)1162 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1163 {
1164 int have_post = 0, len;
1165 OCSP_REQUEST *req = NULL;
1166 char inbuf[1024];
1167 BIO *cbio = NULL;
1168
1169 if (BIO_do_accept(acbio) <= 0)
1170 {
1171 BIO_printf(bio_err, "Error accepting connection\n");
1172 ERR_print_errors(bio_err);
1173 return 0;
1174 }
1175
1176 cbio = BIO_pop(acbio);
1177 *pcbio = cbio;
1178
1179 for(;;)
1180 {
1181 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1182 if (len <= 0)
1183 return 1;
1184 /* Look for "POST" signalling start of query */
1185 if (!have_post)
1186 {
1187 if(strncmp(inbuf, "POST", 4))
1188 {
1189 BIO_printf(bio_err, "Invalid request\n");
1190 return 1;
1191 }
1192 have_post = 1;
1193 }
1194 /* Look for end of headers */
1195 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1196 break;
1197 }
1198
1199 /* Try to read OCSP request */
1200
1201 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1202
1203 if (!req)
1204 {
1205 BIO_printf(bio_err, "Error parsing OCSP request\n");
1206 ERR_print_errors(bio_err);
1207 }
1208
1209 *preq = req;
1210
1211 return 1;
1212
1213 }
1214
send_ocsp_response(BIO * cbio,OCSP_RESPONSE * resp)1215 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1216 {
1217 char http_resp[] =
1218 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1219 "Content-Length: %d\r\n\r\n";
1220 if (!cbio)
1221 return 0;
1222 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1223 i2d_OCSP_RESPONSE_bio(cbio, resp);
1224 BIO_flush(cbio);
1225 return 1;
1226 }
1227
1228 #endif
1229