xref: /minix/crypto/external/bsd/openssl/dist/apps/ocsp.c (revision ebfedea0)
1 /* ocsp.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 2000.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 #ifndef OPENSSL_NO_OCSP
59 
60 #ifdef OPENSSL_SYS_VMS
61 #define _XOPEN_SOURCE_EXTENDED	/* So fd_set and friends get properly defined
62 				   on OpenVMS */
63 #endif
64 
65 #define USE_SOCKETS
66 
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70 #include <time.h>
71 #include "apps.h" /* needs to be included before the openssl headers! */
72 #include <openssl/e_os2.h>
73 #include <openssl/crypto.h>
74 #include <openssl/err.h>
75 #include <openssl/ssl.h>
76 #include <openssl/evp.h>
77 #include <openssl/bn.h>
78 #include <openssl/x509v3.h>
79 
80 #if defined(NETWARE_CLIB)
81 #  ifdef NETWARE_BSDSOCK
82 #    include <sys/socket.h>
83 #    include <sys/bsdskt.h>
84 #  else
85 #    include <novsock2.h>
86 #  endif
87 #elif defined(NETWARE_LIBC)
88 #  ifdef NETWARE_BSDSOCK
89 #    include <sys/select.h>
90 #  else
91 #    include <novsock2.h>
92 #  endif
93 #endif
94 
95 /* Maximum leeway in validity period: default 5 minutes */
96 #define MAX_VALIDITY_PERIOD	(5 * 60)
97 
98 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md, X509 *issuer,
99 				STACK_OF(OCSP_CERTID) *ids);
100 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, const EVP_MD * cert_id_md, X509 *issuer,
101 				STACK_OF(OCSP_CERTID) *ids);
102 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
103 			      STACK_OF(OPENSSL_STRING) *names,
104 			      STACK_OF(OCSP_CERTID) *ids, long nsec,
105 			      long maxage);
106 
107 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
108 			X509 *ca, X509 *rcert, EVP_PKEY *rkey,
109 			STACK_OF(X509) *rother, unsigned long flags,
110 			int nmin, int ndays);
111 
112 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
113 static BIO *init_responder(char *port);
114 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
115 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
116 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
117 				STACK_OF(CONF_VALUE) *headers,
118 				OCSP_REQUEST *req, int req_timeout);
119 
120 #undef PROG
121 #define PROG ocsp_main
122 
123 int MAIN(int, char **);
124 
125 int MAIN(int argc, char **argv)
126 	{
127 	ENGINE *e = NULL;
128 	char **args;
129 	char *host = NULL, *port = NULL, *path = "/";
130 	char *reqin = NULL, *respin = NULL;
131 	char *reqout = NULL, *respout = NULL;
132 	char *signfile = NULL, *keyfile = NULL;
133 	char *rsignfile = NULL, *rkeyfile = NULL;
134 	char *outfile = NULL;
135 	int add_nonce = 1, noverify = 0, use_ssl = -1;
136 	STACK_OF(CONF_VALUE) *headers = NULL;
137 	OCSP_REQUEST *req = NULL;
138 	OCSP_RESPONSE *resp = NULL;
139 	OCSP_BASICRESP *bs = NULL;
140 	X509 *issuer = NULL, *cert = NULL;
141 	X509 *signer = NULL, *rsigner = NULL;
142 	EVP_PKEY *key = NULL, *rkey = NULL;
143 	BIO *acbio = NULL, *cbio = NULL;
144 	BIO *derbio = NULL;
145 	BIO *out = NULL;
146 	int req_timeout = -1;
147 	int req_text = 0, resp_text = 0;
148 	long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
149 	char *CAfile = NULL, *CApath = NULL;
150 	X509_STORE *store = NULL;
151 	STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
152 	char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
153 	unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
154 	int ret = 1;
155 	int accept_count = -1;
156 	int badarg = 0;
157 	int i;
158 	int ignore_err = 0;
159 	STACK_OF(OPENSSL_STRING) *reqnames = NULL;
160 	STACK_OF(OCSP_CERTID) *ids = NULL;
161 
162 	X509 *rca_cert = NULL;
163 	char *ridx_filename = NULL;
164 	char *rca_filename = NULL;
165 	CA_DB *rdb = NULL;
166 	int nmin = 0, ndays = -1;
167 	const EVP_MD *cert_id_md = NULL;
168 
169 	if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
170 
171 	if (!load_config(bio_err, NULL))
172 		goto end;
173 	SSL_load_error_strings();
174 	OpenSSL_add_ssl_algorithms();
175 	args = argv + 1;
176 	reqnames = sk_OPENSSL_STRING_new_null();
177 	ids = sk_OCSP_CERTID_new_null();
178 	while (!badarg && *args && *args[0] == '-')
179 		{
180 		if (!strcmp(*args, "-out"))
181 			{
182 			if (args[1])
183 				{
184 				args++;
185 				outfile = *args;
186 				}
187 			else badarg = 1;
188 			}
189 		else if (!strcmp(*args, "-timeout"))
190 			{
191 			if (args[1])
192 				{
193 				args++;
194 				req_timeout = atol(*args);
195 				if (req_timeout < 0)
196 					{
197 					BIO_printf(bio_err,
198 						"Illegal timeout value %s\n",
199 						*args);
200 					badarg = 1;
201 					}
202 				}
203 			else badarg = 1;
204 			}
205 		else if (!strcmp(*args, "-url"))
206 			{
207 			if (args[1])
208 				{
209 				args++;
210 				if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
211 					{
212 					BIO_printf(bio_err, "Error parsing URL\n");
213 					badarg = 1;
214 					}
215 				}
216 			else badarg = 1;
217 			}
218 		else if (!strcmp(*args, "-host"))
219 			{
220 			if (args[1])
221 				{
222 				args++;
223 				host = *args;
224 				}
225 			else badarg = 1;
226 			}
227 		else if (!strcmp(*args, "-port"))
228 			{
229 			if (args[1])
230 				{
231 				args++;
232 				port = BUF_strdup(*args);
233 				}
234 			else badarg = 1;
235 			}
236 		else if (!strcmp(*args, "-header"))
237 			{
238 			if (args[1] && args[2])
239 				{
240 				if (!X509V3_add_value(args[1], args[2], &headers))
241 					goto end;
242 				args += 2;
243 				}
244 			else badarg = 1;
245 			}
246 		else if (!strcmp(*args, "-ignore_err"))
247 			ignore_err = 1;
248 		else if (!strcmp(*args, "-noverify"))
249 			noverify = 1;
250 		else if (!strcmp(*args, "-nonce"))
251 			add_nonce = 2;
252 		else if (!strcmp(*args, "-no_nonce"))
253 			add_nonce = 0;
254 		else if (!strcmp(*args, "-resp_no_certs"))
255 			rflags |= OCSP_NOCERTS;
256 		else if (!strcmp(*args, "-resp_key_id"))
257 			rflags |= OCSP_RESPID_KEY;
258 		else if (!strcmp(*args, "-no_certs"))
259 			sign_flags |= OCSP_NOCERTS;
260 		else if (!strcmp(*args, "-no_signature_verify"))
261 			verify_flags |= OCSP_NOSIGS;
262 		else if (!strcmp(*args, "-no_cert_verify"))
263 			verify_flags |= OCSP_NOVERIFY;
264 		else if (!strcmp(*args, "-no_chain"))
265 			verify_flags |= OCSP_NOCHAIN;
266 		else if (!strcmp(*args, "-no_cert_checks"))
267 			verify_flags |= OCSP_NOCHECKS;
268 		else if (!strcmp(*args, "-no_explicit"))
269 			verify_flags |= OCSP_NOEXPLICIT;
270 		else if (!strcmp(*args, "-trust_other"))
271 			verify_flags |= OCSP_TRUSTOTHER;
272 		else if (!strcmp(*args, "-no_intern"))
273 			verify_flags |= OCSP_NOINTERN;
274 		else if (!strcmp(*args, "-text"))
275 			{
276 			req_text = 1;
277 			resp_text = 1;
278 			}
279 		else if (!strcmp(*args, "-req_text"))
280 			req_text = 1;
281 		else if (!strcmp(*args, "-resp_text"))
282 			resp_text = 1;
283 		else if (!strcmp(*args, "-reqin"))
284 			{
285 			if (args[1])
286 				{
287 				args++;
288 				reqin = *args;
289 				}
290 			else badarg = 1;
291 			}
292 		else if (!strcmp(*args, "-respin"))
293 			{
294 			if (args[1])
295 				{
296 				args++;
297 				respin = *args;
298 				}
299 			else badarg = 1;
300 			}
301 		else if (!strcmp(*args, "-signer"))
302 			{
303 			if (args[1])
304 				{
305 				args++;
306 				signfile = *args;
307 				}
308 			else badarg = 1;
309 			}
310 		else if (!strcmp (*args, "-VAfile"))
311 			{
312 			if (args[1])
313 				{
314 				args++;
315 				verify_certfile = *args;
316 				verify_flags |= OCSP_TRUSTOTHER;
317 				}
318 			else badarg = 1;
319 			}
320 		else if (!strcmp(*args, "-sign_other"))
321 			{
322 			if (args[1])
323 				{
324 				args++;
325 				sign_certfile = *args;
326 				}
327 			else badarg = 1;
328 			}
329 		else if (!strcmp(*args, "-verify_other"))
330 			{
331 			if (args[1])
332 				{
333 				args++;
334 				verify_certfile = *args;
335 				}
336 			else badarg = 1;
337 			}
338 		else if (!strcmp (*args, "-CAfile"))
339 			{
340 			if (args[1])
341 				{
342 				args++;
343 				CAfile = *args;
344 				}
345 			else badarg = 1;
346 			}
347 		else if (!strcmp (*args, "-CApath"))
348 			{
349 			if (args[1])
350 				{
351 				args++;
352 				CApath = *args;
353 				}
354 			else badarg = 1;
355 			}
356 		else if (!strcmp (*args, "-validity_period"))
357 			{
358 			if (args[1])
359 				{
360 				args++;
361 				nsec = atol(*args);
362 				if (nsec < 0)
363 					{
364 					BIO_printf(bio_err,
365 						"Illegal validity period %s\n",
366 						*args);
367 					badarg = 1;
368 					}
369 				}
370 			else badarg = 1;
371 			}
372 		else if (!strcmp (*args, "-status_age"))
373 			{
374 			if (args[1])
375 				{
376 				args++;
377 				maxage = atol(*args);
378 				if (maxage < 0)
379 					{
380 					BIO_printf(bio_err,
381 						"Illegal validity age %s\n",
382 						*args);
383 					badarg = 1;
384 					}
385 				}
386 			else badarg = 1;
387 			}
388 		 else if (!strcmp(*args, "-signkey"))
389 			{
390 			if (args[1])
391 				{
392 				args++;
393 				keyfile = *args;
394 				}
395 			else badarg = 1;
396 			}
397 		else if (!strcmp(*args, "-reqout"))
398 			{
399 			if (args[1])
400 				{
401 				args++;
402 				reqout = *args;
403 				}
404 			else badarg = 1;
405 			}
406 		else if (!strcmp(*args, "-respout"))
407 			{
408 			if (args[1])
409 				{
410 				args++;
411 				respout = *args;
412 				}
413 			else badarg = 1;
414 			}
415 		 else if (!strcmp(*args, "-path"))
416 			{
417 			if (args[1])
418 				{
419 				args++;
420 				path = *args;
421 				}
422 			else badarg = 1;
423 			}
424 		else if (!strcmp(*args, "-issuer"))
425 			{
426 			if (args[1])
427 				{
428 				args++;
429 				X509_free(issuer);
430 				issuer = load_cert(bio_err, *args, FORMAT_PEM,
431 					NULL, e, "issuer certificate");
432 				if(!issuer) goto end;
433 				}
434 			else badarg = 1;
435 			}
436 		else if (!strcmp (*args, "-cert"))
437 			{
438 			if (args[1])
439 				{
440 				args++;
441 				X509_free(cert);
442 				cert = load_cert(bio_err, *args, FORMAT_PEM,
443 					NULL, e, "certificate");
444 				if(!cert) goto end;
445 				if (!cert_id_md) cert_id_md = EVP_sha1();
446 				if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
447 					goto end;
448 				if(!sk_OPENSSL_STRING_push(reqnames, *args))
449 					goto end;
450 				}
451 			else badarg = 1;
452 			}
453 		else if (!strcmp(*args, "-serial"))
454 			{
455 			if (args[1])
456 				{
457 				args++;
458 				if (!cert_id_md) cert_id_md = EVP_sha1();
459 				if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
460 					goto end;
461 				if(!sk_OPENSSL_STRING_push(reqnames, *args))
462 					goto end;
463 				}
464 			else badarg = 1;
465 			}
466 		else if (!strcmp(*args, "-index"))
467 			{
468 			if (args[1])
469 				{
470 				args++;
471 				ridx_filename = *args;
472 				}
473 			else badarg = 1;
474 			}
475 		else if (!strcmp(*args, "-CA"))
476 			{
477 			if (args[1])
478 				{
479 				args++;
480 				rca_filename = *args;
481 				}
482 			else badarg = 1;
483 			}
484 		else if (!strcmp (*args, "-nmin"))
485 			{
486 			if (args[1])
487 				{
488 				args++;
489 				nmin = atol(*args);
490 				if (nmin < 0)
491 					{
492 					BIO_printf(bio_err,
493 						"Illegal update period %s\n",
494 						*args);
495 					badarg = 1;
496 					}
497 				}
498 				if (ndays == -1)
499 					ndays = 0;
500 			else badarg = 1;
501 			}
502 		else if (!strcmp (*args, "-nrequest"))
503 			{
504 			if (args[1])
505 				{
506 				args++;
507 				accept_count = atol(*args);
508 				if (accept_count < 0)
509 					{
510 					BIO_printf(bio_err,
511 						"Illegal accept count %s\n",
512 						*args);
513 					badarg = 1;
514 					}
515 				}
516 			else badarg = 1;
517 			}
518 		else if (!strcmp (*args, "-ndays"))
519 			{
520 			if (args[1])
521 				{
522 				args++;
523 				ndays = atol(*args);
524 				if (ndays < 0)
525 					{
526 					BIO_printf(bio_err,
527 						"Illegal update period %s\n",
528 						*args);
529 					badarg = 1;
530 					}
531 				}
532 			else badarg = 1;
533 			}
534 		else if (!strcmp(*args, "-rsigner"))
535 			{
536 			if (args[1])
537 				{
538 				args++;
539 				rsignfile = *args;
540 				}
541 			else badarg = 1;
542 			}
543 		else if (!strcmp(*args, "-rkey"))
544 			{
545 			if (args[1])
546 				{
547 				args++;
548 				rkeyfile = *args;
549 				}
550 			else badarg = 1;
551 			}
552 		else if (!strcmp(*args, "-rother"))
553 			{
554 			if (args[1])
555 				{
556 				args++;
557 				rcertfile = *args;
558 				}
559 			else badarg = 1;
560 			}
561 		else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
562 			{
563 			badarg = 1;
564 			}
565 		args++;
566 		}
567 
568 	/* Have we anything to do? */
569 	if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
570 
571 	if (badarg)
572 		{
573 		BIO_printf (bio_err, "OCSP utility\n");
574 		BIO_printf (bio_err, "Usage ocsp [options]\n");
575 		BIO_printf (bio_err, "where options are\n");
576 		BIO_printf (bio_err, "-out file          output filename\n");
577 		BIO_printf (bio_err, "-issuer file       issuer certificate\n");
578 		BIO_printf (bio_err, "-cert file         certificate to check\n");
579 		BIO_printf (bio_err, "-serial n          serial number to check\n");
580 		BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
581 		BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
582 		BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
583 		BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
584 		BIO_printf (bio_err, "-req_text          print text form of request\n");
585 		BIO_printf (bio_err, "-resp_text         print text form of response\n");
586 		BIO_printf (bio_err, "-text              print text form of request and response\n");
587 		BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
588 		BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
589 		BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
590 		BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
591 		BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
592 		BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
593 		BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
594 		BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
595 		BIO_printf (bio_err, "-path              path to use in OCSP request\n");
596 		BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
597 		BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
598 		BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
599 		BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
600 		BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
601 		BIO_printf (bio_err, "-noverify          don't verify response at all\n");
602 		BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
603 		BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
604 		BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
605 		BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
606 		BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
607 		BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
608 		BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
609 		BIO_printf (bio_err, "-port num		 port to run responder on\n");
610 		BIO_printf (bio_err, "-index file	 certificate status index file\n");
611 		BIO_printf (bio_err, "-CA file		 CA certificate\n");
612 		BIO_printf (bio_err, "-rsigner file	 responder certificate to sign responses with\n");
613 		BIO_printf (bio_err, "-rkey file	 responder key to sign responses with\n");
614 		BIO_printf (bio_err, "-rother file	 other certificates to include in response\n");
615 		BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
616 		BIO_printf (bio_err, "-nmin n	 	 number of minutes before next update\n");
617 		BIO_printf (bio_err, "-ndays n	 	 number of days before next update\n");
618 		BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
619 		BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
620 		BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request\n");
621 		goto end;
622 		}
623 
624 	if(outfile) out = BIO_new_file(outfile, "w");
625 	else out = BIO_new_fp(stdout, BIO_NOCLOSE);
626 
627 	if(!out)
628 		{
629 		BIO_printf(bio_err, "Error opening output file\n");
630 		goto end;
631 		}
632 
633 	if (!req && (add_nonce != 2)) add_nonce = 0;
634 
635 	if (!req && reqin)
636 		{
637 		derbio = BIO_new_file(reqin, "rb");
638 		if (!derbio)
639 			{
640 			BIO_printf(bio_err, "Error Opening OCSP request file\n");
641 			goto end;
642 			}
643 		req = d2i_OCSP_REQUEST_bio(derbio, NULL);
644 		BIO_free(derbio);
645 		if(!req)
646 			{
647 			BIO_printf(bio_err, "Error reading OCSP request\n");
648 			goto end;
649 			}
650 		}
651 
652 	if (!req && port)
653 		{
654 		acbio = init_responder(port);
655 		if (!acbio)
656 			goto end;
657 		}
658 
659 	if (rsignfile && !rdb)
660 		{
661 		if (!rkeyfile) rkeyfile = rsignfile;
662 		rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
663 			NULL, e, "responder certificate");
664 		if (!rsigner)
665 			{
666 			BIO_printf(bio_err, "Error loading responder certificate\n");
667 			goto end;
668 			}
669 		rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
670 			NULL, e, "CA certificate");
671 		if (rcertfile)
672 			{
673 			rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
674 				NULL, e, "responder other certificates");
675 			if (!rother) goto end;
676 			}
677 		rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
678 			"responder private key");
679 		if (!rkey)
680 			goto end;
681 		}
682 	if(acbio)
683 		BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
684 
685 	redo_accept:
686 
687 	if (acbio)
688 		{
689 		if (!do_responder(&req, &cbio, acbio, port))
690 			goto end;
691 		if (!req)
692 			{
693 			resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
694 			send_ocsp_response(cbio, resp);
695 			goto done_resp;
696 			}
697 		}
698 
699 	if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
700 		{
701 		BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
702 		goto end;
703 		}
704 
705 	if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
706 
707 	if (signfile)
708 		{
709 		if (!keyfile) keyfile = signfile;
710 		signer = load_cert(bio_err, signfile, FORMAT_PEM,
711 			NULL, e, "signer certificate");
712 		if (!signer)
713 			{
714 			BIO_printf(bio_err, "Error loading signer certificate\n");
715 			goto end;
716 			}
717 		if (sign_certfile)
718 			{
719 			sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
720 				NULL, e, "signer certificates");
721 			if (!sign_other) goto end;
722 			}
723 		key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
724 			"signer private key");
725 		if (!key)
726 			goto end;
727 
728 		if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
729 			{
730 			BIO_printf(bio_err, "Error signing OCSP request\n");
731 			goto end;
732 			}
733 		}
734 
735 	if (req_text && req) OCSP_REQUEST_print(out, req, 0);
736 
737 	if (reqout)
738 		{
739 		derbio = BIO_new_file(reqout, "wb");
740 		if(!derbio)
741 			{
742 			BIO_printf(bio_err, "Error opening file %s\n", reqout);
743 			goto end;
744 			}
745 		i2d_OCSP_REQUEST_bio(derbio, req);
746 		BIO_free(derbio);
747 		}
748 
749 	if (ridx_filename && (!rkey || !rsigner || !rca_cert))
750 		{
751 		BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
752 		goto end;
753 		}
754 
755 	if (ridx_filename && !rdb)
756 		{
757 		rdb = load_index(ridx_filename, NULL);
758 		if (!rdb) goto end;
759 		if (!index_index(rdb)) goto end;
760 		}
761 
762 	if (rdb)
763 		{
764 		i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
765 		if (cbio)
766 			send_ocsp_response(cbio, resp);
767 		}
768 	else if (host)
769 		{
770 #ifndef OPENSSL_NO_SOCK
771 		resp = process_responder(bio_err, req, host, path,
772 					port, use_ssl, headers, req_timeout);
773 		if (!resp)
774 			goto end;
775 #else
776 		BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
777 		goto end;
778 #endif
779 		}
780 	else if (respin)
781 		{
782 		derbio = BIO_new_file(respin, "rb");
783 		if (!derbio)
784 			{
785 			BIO_printf(bio_err, "Error Opening OCSP response file\n");
786 			goto end;
787 			}
788 		resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
789 		BIO_free(derbio);
790 		if(!resp)
791 			{
792 			BIO_printf(bio_err, "Error reading OCSP response\n");
793 			goto end;
794 			}
795 
796 		}
797 	else
798 		{
799 		ret = 0;
800 		goto end;
801 		}
802 
803 	done_resp:
804 
805 	if (respout)
806 		{
807 		derbio = BIO_new_file(respout, "wb");
808 		if(!derbio)
809 			{
810 			BIO_printf(bio_err, "Error opening file %s\n", respout);
811 			goto end;
812 			}
813 		i2d_OCSP_RESPONSE_bio(derbio, resp);
814 		BIO_free(derbio);
815 		}
816 
817 	i = OCSP_response_status(resp);
818 
819 	if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
820 		{
821 		BIO_printf(out, "Responder Error: %s (%d)\n",
822 				OCSP_response_status_str(i), i);
823 		if (ignore_err)
824 			goto redo_accept;
825 		ret = 0;
826 		goto end;
827 		}
828 
829 	if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
830 
831 	/* If running as responder don't verify our own response */
832 	if (cbio)
833 		{
834 		if (accept_count > 0)
835 			accept_count--;
836 		/* Redo if more connections needed */
837 		if (accept_count)
838 			{
839 			BIO_free_all(cbio);
840 			cbio = NULL;
841 			OCSP_REQUEST_free(req);
842 			req = NULL;
843 			OCSP_RESPONSE_free(resp);
844 			resp = NULL;
845 			goto redo_accept;
846 			}
847 		goto end;
848 		}
849 
850 	if (!store)
851 		store = setup_verify(bio_err, CAfile, CApath);
852 	if (!store)
853 		goto end;
854 	if (verify_certfile)
855 		{
856 		verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
857 			NULL, e, "validator certificate");
858 		if (!verify_other) goto end;
859 		}
860 
861 	bs = OCSP_response_get1_basic(resp);
862 
863 	if (!bs)
864 		{
865 		BIO_printf(bio_err, "Error parsing response\n");
866 		goto end;
867 		}
868 
869 	if (!noverify)
870 		{
871 		if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
872 			{
873 			if (i == -1)
874 				BIO_printf(bio_err, "WARNING: no nonce in response\n");
875 			else
876 				{
877 				BIO_printf(bio_err, "Nonce Verify error\n");
878 				goto end;
879 				}
880 			}
881 
882 		i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
883                 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
884 
885 		if(i <= 0)
886 			{
887 			BIO_printf(bio_err, "Response Verify Failure\n");
888 			ERR_print_errors(bio_err);
889 			}
890 		else
891 			BIO_printf(bio_err, "Response verify OK\n");
892 
893 		}
894 
895 	if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
896 		goto end;
897 
898 	ret = 0;
899 
900 end:
901 	ERR_print_errors(bio_err);
902 	X509_free(signer);
903 	X509_STORE_free(store);
904 	EVP_PKEY_free(key);
905 	EVP_PKEY_free(rkey);
906 	X509_free(issuer);
907 	X509_free(cert);
908 	X509_free(rsigner);
909 	X509_free(rca_cert);
910 	free_index(rdb);
911 	BIO_free_all(cbio);
912 	BIO_free_all(acbio);
913 	BIO_free(out);
914 	OCSP_REQUEST_free(req);
915 	OCSP_RESPONSE_free(resp);
916 	OCSP_BASICRESP_free(bs);
917 	sk_OPENSSL_STRING_free(reqnames);
918 	sk_OCSP_CERTID_free(ids);
919 	sk_X509_pop_free(sign_other, X509_free);
920 	sk_X509_pop_free(verify_other, X509_free);
921 	sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
922 
923 	if (use_ssl != -1)
924 		{
925 		OPENSSL_free(host);
926 		OPENSSL_free(port);
927 		OPENSSL_free(path);
928 		}
929 
930 	OPENSSL_EXIT(ret);
931 }
932 
933 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
934 				STACK_OF(OCSP_CERTID) *ids)
935 	{
936 	OCSP_CERTID *id;
937 	if(!issuer)
938 		{
939 		BIO_printf(bio_err, "No issuer certificate specified\n");
940 		return 0;
941 		}
942 	if(!*req) *req = OCSP_REQUEST_new();
943 	if(!*req) goto err;
944 	id = OCSP_cert_to_id(cert_id_md, cert, issuer);
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 
954 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
955 				STACK_OF(OCSP_CERTID) *ids)
956 	{
957 	OCSP_CERTID *id;
958 	X509_NAME *iname;
959 	ASN1_BIT_STRING *ikey;
960 	ASN1_INTEGER *sno;
961 	if(!issuer)
962 		{
963 		BIO_printf(bio_err, "No issuer certificate specified\n");
964 		return 0;
965 		}
966 	if(!*req) *req = OCSP_REQUEST_new();
967 	if(!*req) goto err;
968 	iname = X509_get_subject_name(issuer);
969 	ikey = X509_get0_pubkey_bitstr(issuer);
970 	sno = s2i_ASN1_INTEGER(NULL, serial);
971 	if(!sno)
972 		{
973 		BIO_printf(bio_err, "Error converting serial number %s\n", serial);
974 		return 0;
975 		}
976 	id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
977 	ASN1_INTEGER_free(sno);
978 	if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
979 	if(!OCSP_request_add0_id(*req, id)) goto err;
980 	return 1;
981 
982 	err:
983 	BIO_printf(bio_err, "Error Creating OCSP request\n");
984 	return 0;
985 	}
986 
987 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
988 			      STACK_OF(OPENSSL_STRING) *names,
989 			      STACK_OF(OCSP_CERTID) *ids, long nsec,
990 			      long maxage)
991 	{
992 	OCSP_CERTID *id;
993 	char *name;
994 	int i;
995 
996 	int status, reason;
997 
998 	ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
999 
1000 	if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1001 		return 1;
1002 
1003 	for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1004 		{
1005 		id = sk_OCSP_CERTID_value(ids, i);
1006 		name = sk_OPENSSL_STRING_value(names, i);
1007 		BIO_printf(out, "%s: ", name);
1008 
1009 		if(!OCSP_resp_find_status(bs, id, &status, &reason,
1010 					&rev, &thisupd, &nextupd))
1011 			{
1012 			BIO_puts(out, "ERROR: No Status found.\n");
1013 			continue;
1014 			}
1015 
1016 		/* Check validity: if invalid write to output BIO so we
1017 		 * know which response this refers to.
1018 		 */
1019 		if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1020 			{
1021 			BIO_puts(out, "WARNING: Status times invalid.\n");
1022 			ERR_print_errors(out);
1023 			}
1024 		BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1025 
1026 		BIO_puts(out, "\tThis Update: ");
1027 		ASN1_GENERALIZEDTIME_print(out, thisupd);
1028 		BIO_puts(out, "\n");
1029 
1030 		if(nextupd)
1031 			{
1032 			BIO_puts(out, "\tNext Update: ");
1033 			ASN1_GENERALIZEDTIME_print(out, nextupd);
1034 			BIO_puts(out, "\n");
1035 			}
1036 
1037 		if (status != V_OCSP_CERTSTATUS_REVOKED)
1038 			continue;
1039 
1040 		if (reason != -1)
1041 			BIO_printf(out, "\tReason: %s\n",
1042 				OCSP_crl_reason_str(reason));
1043 
1044 		BIO_puts(out, "\tRevocation Time: ");
1045 		ASN1_GENERALIZEDTIME_print(out, rev);
1046 		BIO_puts(out, "\n");
1047 		}
1048 
1049 	return 1;
1050 	}
1051 
1052 
1053 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1054 			X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1055 			STACK_OF(X509) *rother, unsigned long flags,
1056 			int nmin, int ndays)
1057 	{
1058 	ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1059 	OCSP_CERTID *cid, *ca_id = NULL;
1060 	OCSP_BASICRESP *bs = NULL;
1061 	int i, id_count, ret = 1;
1062 
1063 	id_count = OCSP_request_onereq_count(req);
1064 
1065 	if (id_count <= 0)
1066 		{
1067 		*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1068 		goto end;
1069 		}
1070 
1071 
1072 	bs = OCSP_BASICRESP_new();
1073 	thisupd = X509_gmtime_adj(NULL, 0);
1074 	if (ndays != -1)
1075 		nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1076 
1077 	/* Examine each certificate id in the request */
1078 	for (i = 0; i < id_count; i++)
1079 		{
1080 		OCSP_ONEREQ *one;
1081 		ASN1_INTEGER *serial;
1082 		char **inf;
1083 		ASN1_OBJECT *cert_id_md_oid;
1084 		const EVP_MD *cert_id_md;
1085 		one = OCSP_request_onereq_get0(req, i);
1086 		cid = OCSP_onereq_get0_id(one);
1087 
1088 		OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1089 
1090 		cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1091 		if (! cert_id_md)
1092 			{
1093 			*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1094 				NULL);
1095 				goto end;
1096 			}
1097 		if (ca_id) OCSP_CERTID_free(ca_id);
1098 		ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1099 
1100 		/* Is this request about our CA? */
1101 		if (OCSP_id_issuer_cmp(ca_id, cid))
1102 			{
1103 			OCSP_basic_add1_status(bs, cid,
1104 						V_OCSP_CERTSTATUS_UNKNOWN,
1105 						0, NULL,
1106 						thisupd, nextupd);
1107 			continue;
1108 			}
1109 		OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1110 		inf = lookup_serial(db, serial);
1111 		if (!inf)
1112 			OCSP_basic_add1_status(bs, cid,
1113 						V_OCSP_CERTSTATUS_UNKNOWN,
1114 						0, NULL,
1115 						thisupd, nextupd);
1116 		else if (inf[DB_type][0] == DB_TYPE_VAL)
1117 			OCSP_basic_add1_status(bs, cid,
1118 						V_OCSP_CERTSTATUS_GOOD,
1119 						0, NULL,
1120 						thisupd, nextupd);
1121 		else if (inf[DB_type][0] == DB_TYPE_REV)
1122 			{
1123 			ASN1_OBJECT *inst = NULL;
1124 			ASN1_TIME *revtm = NULL;
1125 			ASN1_GENERALIZEDTIME *invtm = NULL;
1126 			OCSP_SINGLERESP *single;
1127 			int reason = -1;
1128 			unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1129 			single = OCSP_basic_add1_status(bs, cid,
1130 						V_OCSP_CERTSTATUS_REVOKED,
1131 						reason, revtm,
1132 						thisupd, nextupd);
1133 			if (invtm)
1134 				OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1135 			else if (inst)
1136 				OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1137 			ASN1_OBJECT_free(inst);
1138 			ASN1_TIME_free(revtm);
1139 			ASN1_GENERALIZEDTIME_free(invtm);
1140 			}
1141 		}
1142 
1143 	OCSP_copy_nonce(bs, req);
1144 
1145 	OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags);
1146 
1147 	*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1148 
1149 	end:
1150 	ASN1_TIME_free(thisupd);
1151 	ASN1_TIME_free(nextupd);
1152 	OCSP_CERTID_free(ca_id);
1153 	OCSP_BASICRESP_free(bs);
1154 	return ret;
1155 
1156 	}
1157 
1158 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1159 	{
1160 	int i;
1161 	BIGNUM *bn = NULL;
1162 	char *itmp, *row[DB_NUMBER],**rrow;
1163 	for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1164 	bn = ASN1_INTEGER_to_BN(ser,NULL);
1165 	OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1166 	if (BN_is_zero(bn))
1167 		itmp = BUF_strdup("00");
1168 	else
1169 		itmp = BN_bn2hex(bn);
1170 	row[DB_serial] = itmp;
1171 	BN_free(bn);
1172 	rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1173 	OPENSSL_free(itmp);
1174 	return rrow;
1175 	}
1176 
1177 /* Quick and dirty OCSP server: read in and parse input request */
1178 
1179 static BIO *init_responder(char *port)
1180 	{
1181 	BIO *acbio = NULL, *bufbio = NULL;
1182 	bufbio = BIO_new(BIO_f_buffer());
1183 	if (!bufbio)
1184 		goto err;
1185 #ifndef OPENSSL_NO_SOCK
1186 	acbio = BIO_new_accept(port);
1187 #else
1188 	BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1189 #endif
1190 	if (!acbio)
1191 		goto err;
1192 	BIO_set_accept_bios(acbio, bufbio);
1193 	bufbio = NULL;
1194 
1195 	if (BIO_do_accept(acbio) <= 0)
1196 		{
1197 			BIO_printf(bio_err, "Error setting up accept BIO\n");
1198 			ERR_print_errors(bio_err);
1199 			goto err;
1200 		}
1201 
1202 	return acbio;
1203 
1204 	err:
1205 	BIO_free_all(acbio);
1206 	BIO_free(bufbio);
1207 	return NULL;
1208 	}
1209 
1210 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1211 	{
1212 	int have_post = 0, len;
1213 	OCSP_REQUEST *req = NULL;
1214 	char inbuf[1024];
1215 	BIO *cbio = NULL;
1216 
1217 	if (BIO_do_accept(acbio) <= 0)
1218 		{
1219 			BIO_printf(bio_err, "Error accepting connection\n");
1220 			ERR_print_errors(bio_err);
1221 			return 0;
1222 		}
1223 
1224 	cbio = BIO_pop(acbio);
1225 	*pcbio = cbio;
1226 
1227 	for(;;)
1228 		{
1229 		len = BIO_gets(cbio, inbuf, sizeof inbuf);
1230 		if (len <= 0)
1231 			return 1;
1232 		/* Look for "POST" signalling start of query */
1233 		if (!have_post)
1234 			{
1235 			if(strncmp(inbuf, "POST", 4))
1236 				{
1237 				BIO_printf(bio_err, "Invalid request\n");
1238 				return 1;
1239 				}
1240 			have_post = 1;
1241 			}
1242 		/* Look for end of headers */
1243 		if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1244 			break;
1245 		}
1246 
1247 	/* Try to read OCSP request */
1248 
1249 	req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1250 
1251 	if (!req)
1252 		{
1253 		BIO_printf(bio_err, "Error parsing OCSP request\n");
1254 		ERR_print_errors(bio_err);
1255 		}
1256 
1257 	*preq = req;
1258 
1259 	return 1;
1260 
1261 	}
1262 
1263 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1264 	{
1265 	char http_resp[] =
1266 		"HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1267 		"Content-Length: %d\r\n\r\n";
1268 	if (!cbio)
1269 		return 0;
1270 	BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1271 	i2d_OCSP_RESPONSE_bio(cbio, resp);
1272 	(void)BIO_flush(cbio);
1273 	return 1;
1274 	}
1275 
1276 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1277 				STACK_OF(CONF_VALUE) *headers,
1278 				OCSP_REQUEST *req, int req_timeout)
1279 	{
1280 	int fd;
1281 	int rv;
1282 	int i;
1283 	OCSP_REQ_CTX *ctx = NULL;
1284 	OCSP_RESPONSE *rsp = NULL;
1285 	fd_set confds;
1286 	struct timeval tv;
1287 
1288 	if (req_timeout != -1)
1289 		BIO_set_nbio(cbio, 1);
1290 
1291 	rv = BIO_do_connect(cbio);
1292 
1293 	if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1294 		{
1295 		BIO_puts(err, "Error connecting BIO\n");
1296 		return NULL;
1297 		}
1298 
1299 	if (BIO_get_fd(cbio, &fd) <= 0)
1300 		{
1301 		BIO_puts(err, "Can't get connection fd\n");
1302 		goto err;
1303 		}
1304 
1305 	if (req_timeout != -1 && rv <= 0)
1306 		{
1307 		FD_ZERO(&confds);
1308 		openssl_fdset(fd, &confds);
1309 		tv.tv_usec = 0;
1310 		tv.tv_sec = req_timeout;
1311 		rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1312 		if (rv == 0)
1313 			{
1314 			BIO_puts(err, "Timeout on connect\n");
1315 			return NULL;
1316 			}
1317 		}
1318 
1319 
1320 	ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1321 	if (!ctx)
1322 		return NULL;
1323 
1324 	for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1325 		{
1326 		CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1327 		if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1328 			goto err;
1329 		}
1330 
1331 	if (!OCSP_REQ_CTX_set1_req(ctx, req))
1332 		goto err;
1333 
1334 	for (;;)
1335 		{
1336 		rv = OCSP_sendreq_nbio(&rsp, ctx);
1337 		if (rv != -1)
1338 			break;
1339 		if (req_timeout == -1)
1340 			continue;
1341 		FD_ZERO(&confds);
1342 		openssl_fdset(fd, &confds);
1343 		tv.tv_usec = 0;
1344 		tv.tv_sec = req_timeout;
1345 		if (BIO_should_read(cbio))
1346 			rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1347 		else if (BIO_should_write(cbio))
1348 			rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1349 		else
1350 			{
1351 			BIO_puts(err, "Unexpected retry condition\n");
1352 			goto err;
1353 			}
1354 		if (rv == 0)
1355 			{
1356 			BIO_puts(err, "Timeout on request\n");
1357 			break;
1358 			}
1359 		if (rv == -1)
1360 			{
1361 			BIO_puts(err, "Select error\n");
1362 			break;
1363 			}
1364 
1365 		}
1366 	err:
1367 	if (ctx)
1368 		OCSP_REQ_CTX_free(ctx);
1369 
1370 	return rsp;
1371 	}
1372 
1373 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1374 			char *host, char *path, char *port, int use_ssl,
1375 			STACK_OF(CONF_VALUE) *headers,
1376 			int req_timeout)
1377 	{
1378 	BIO *cbio = NULL;
1379 	SSL_CTX *ctx = NULL;
1380 	OCSP_RESPONSE *resp = NULL;
1381 	cbio = BIO_new_connect(host);
1382 	if (!cbio)
1383 		{
1384 		BIO_printf(err, "Error creating connect BIO\n");
1385 		goto end;
1386 		}
1387 	if (port) BIO_set_conn_port(cbio, port);
1388 	if (use_ssl == 1)
1389 		{
1390 		BIO *sbio;
1391 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1392 		ctx = SSL_CTX_new(SSLv23_client_method());
1393 #elif !defined(OPENSSL_NO_SSL3)
1394 		ctx = SSL_CTX_new(SSLv3_client_method());
1395 #elif !defined(OPENSSL_NO_SSL2)
1396 		ctx = SSL_CTX_new(SSLv2_client_method());
1397 #else
1398 		BIO_printf(err, "SSL is disabled\n");
1399 			goto end;
1400 #endif
1401 		if (ctx == NULL)
1402 			{
1403 			BIO_printf(err, "Error creating SSL context.\n");
1404 			goto end;
1405 			}
1406 		SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1407 		sbio = BIO_new_ssl(ctx, 1);
1408 		cbio = BIO_push(sbio, cbio);
1409 		}
1410 	resp = query_responder(err, cbio, path, headers, req, req_timeout);
1411 	if (!resp)
1412 		BIO_printf(bio_err, "Error querying OCSP responsder\n");
1413 	end:
1414 	if (cbio)
1415 		BIO_free_all(cbio);
1416 	if (ctx)
1417 		SSL_CTX_free(ctx);
1418 	return resp;
1419 	}
1420 
1421 #endif
1422