6f85c9340aab6e249a62331329755c35a8262199
[openssl.git] / apps / ocsp.c
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, const EVP_MD *md,
109                         STACK_OF(X509) *rother, unsigned long flags,
110                         int nmin, int ndays, int badsig);
111
112 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
113 static BIO *init_responder(const char *port);
114 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, const char *port);
115 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
116 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
117                                       const 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 *thost = NULL, *tport = NULL, *tpath = NULL;
131         char *reqin = NULL, *respin = NULL;
132         char *reqout = NULL, *respout = NULL;
133         char *signfile = NULL, *keyfile = NULL;
134         char *rsignfile = NULL, *rkeyfile = NULL;
135         char *outfile = NULL;
136         int add_nonce = 1, noverify = 0, use_ssl = -1;
137         STACK_OF(CONF_VALUE) *headers = NULL;
138         OCSP_REQUEST *req = NULL;
139         OCSP_RESPONSE *resp = NULL;
140         OCSP_BASICRESP *bs = NULL;
141         X509 *issuer = NULL, *cert = NULL;
142         X509 *signer = NULL, *rsigner = NULL;
143         EVP_PKEY *key = NULL, *rkey = NULL;
144         BIO *acbio = NULL, *cbio = NULL;
145         BIO *derbio = NULL;
146         BIO *out = NULL;
147         int req_timeout = -1;
148         int req_text = 0, resp_text = 0;
149         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
150         char *CAfile = NULL, *CApath = NULL;
151         X509_STORE *store = NULL;
152         X509_VERIFY_PARAM *vpm = NULL;
153         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
154         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
155         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
156         int ret = 1;
157         int accept_count = -1;
158         int badarg = 0;
159         int badsig = 0;
160         int i;
161         int ignore_err = 0;
162         STACK_OF(OPENSSL_STRING) *reqnames = NULL;
163         STACK_OF(OCSP_CERTID) *ids = NULL;
164
165         X509 *rca_cert = NULL;
166         char *ridx_filename = NULL;
167         char *rca_filename = NULL;
168         CA_DB *rdb = NULL;
169         int nmin = 0, ndays = -1;
170         const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
171
172         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
173
174         if (!load_config(bio_err, NULL))
175                 goto end;
176         SSL_load_error_strings();
177         OpenSSL_add_ssl_algorithms();
178         args = argv + 1;
179         reqnames = sk_OPENSSL_STRING_new_null();
180         ids = sk_OCSP_CERTID_new_null();
181         while (!badarg && *args && *args[0] == '-')
182                 {
183                 if (!strcmp(*args, "-out"))
184                         {
185                         if (args[1])
186                                 {
187                                 args++;
188                                 outfile = *args;
189                                 }
190                         else badarg = 1;
191                         }
192                 else if (!strcmp(*args, "-timeout"))
193                         {
194                         if (args[1])
195                                 {
196                                 args++;
197                                 req_timeout = atol(*args);
198                                 if (req_timeout < 0)
199                                         {
200                                         BIO_printf(bio_err,
201                                                 "Illegal timeout value %s\n",
202                                                 *args);
203                                         badarg = 1;
204                                         }
205                                 }
206                         else badarg = 1;
207                         }
208                 else if (!strcmp(*args, "-url"))
209                         {
210                         if (thost)
211                                 OPENSSL_free(thost);
212                         if (tport)
213                                 OPENSSL_free(tport);
214                         if (tpath)
215                                 OPENSSL_free(tpath);
216                         if (args[1])
217                                 {
218                                 args++;
219                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
220                                         {
221                                         BIO_printf(bio_err, "Error parsing URL\n");
222                                         badarg = 1;
223                                         }
224                                 thost = host;
225                                 tport = port;
226                                 tpath = path;
227                                 }
228                         else badarg = 1;
229                         }
230                 else if (!strcmp(*args, "-host"))
231                         {
232                         if (args[1])
233                                 {
234                                 args++;
235                                 host = *args;
236                                 }
237                         else badarg = 1;
238                         }
239                 else if (!strcmp(*args, "-port"))
240                         {
241                         if (args[1])
242                                 {
243                                 args++;
244                                 port = *args;
245                                 }
246                         else badarg = 1;
247                         }
248                 else if (!strcmp(*args, "-header"))
249                         {
250                         if (args[1] && args[2])
251                                 {
252                                 if (!X509V3_add_value(args[1], args[2], &headers))
253                                         goto end;
254                                 args += 2;
255                                 }
256                         else badarg = 1;
257                         }
258                 else if (!strcmp(*args, "-ignore_err"))
259                         ignore_err = 1;
260                 else if (!strcmp(*args, "-noverify"))
261                         noverify = 1;
262                 else if (!strcmp(*args, "-nonce"))
263                         add_nonce = 2;
264                 else if (!strcmp(*args, "-no_nonce"))
265                         add_nonce = 0;
266                 else if (!strcmp(*args, "-resp_no_certs"))
267                         rflags |= OCSP_NOCERTS;
268                 else if (!strcmp(*args, "-resp_key_id"))
269                         rflags |= OCSP_RESPID_KEY;
270                 else if (!strcmp(*args, "-no_certs"))
271                         sign_flags |= OCSP_NOCERTS;
272                 else if (!strcmp(*args, "-no_signature_verify"))
273                         verify_flags |= OCSP_NOSIGS;
274                 else if (!strcmp(*args, "-no_cert_verify"))
275                         verify_flags |= OCSP_NOVERIFY;
276                 else if (!strcmp(*args, "-no_chain"))
277                         verify_flags |= OCSP_NOCHAIN;
278                 else if (!strcmp(*args, "-no_cert_checks"))
279                         verify_flags |= OCSP_NOCHECKS;
280                 else if (!strcmp(*args, "-no_explicit"))
281                         verify_flags |= OCSP_NOEXPLICIT;
282                 else if (!strcmp(*args, "-trust_other"))
283                         verify_flags |= OCSP_TRUSTOTHER;
284                 else if (!strcmp(*args, "-no_intern"))
285                         verify_flags |= OCSP_NOINTERN;
286                 else if (!strcmp(*args, "-badsig"))
287                         badsig = 1;
288                 else if (!strcmp(*args, "-text"))
289                         {
290                         req_text = 1;
291                         resp_text = 1;
292                         }
293                 else if (!strcmp(*args, "-req_text"))
294                         req_text = 1;
295                 else if (!strcmp(*args, "-resp_text"))
296                         resp_text = 1;
297                 else if (!strcmp(*args, "-reqin"))
298                         {
299                         if (args[1])
300                                 {
301                                 args++;
302                                 reqin = *args;
303                                 }
304                         else badarg = 1;
305                         }
306                 else if (!strcmp(*args, "-respin"))
307                         {
308                         if (args[1])
309                                 {
310                                 args++;
311                                 respin = *args;
312                                 }
313                         else badarg = 1;
314                         }
315                 else if (!strcmp(*args, "-signer"))
316                         {
317                         if (args[1])
318                                 {
319                                 args++;
320                                 signfile = *args;
321                                 }
322                         else badarg = 1;
323                         }
324                 else if (!strcmp (*args, "-VAfile"))
325                         {
326                         if (args[1])
327                                 {
328                                 args++;
329                                 verify_certfile = *args;
330                                 verify_flags |= OCSP_TRUSTOTHER;
331                                 }
332                         else badarg = 1;
333                         }
334                 else if (!strcmp(*args, "-sign_other"))
335                         {
336                         if (args[1])
337                                 {
338                                 args++;
339                                 sign_certfile = *args;
340                                 }
341                         else badarg = 1;
342                         }
343                 else if (!strcmp(*args, "-verify_other"))
344                         {
345                         if (args[1])
346                                 {
347                                 args++;
348                                 verify_certfile = *args;
349                                 }
350                         else badarg = 1;
351                         }
352                 else if (!strcmp (*args, "-CAfile"))
353                         {
354                         if (args[1])
355                                 {
356                                 args++;
357                                 CAfile = *args;
358                                 }
359                         else badarg = 1;
360                         }
361                 else if (!strcmp (*args, "-CApath"))
362                         {
363                         if (args[1])
364                                 {
365                                 args++;
366                                 CApath = *args;
367                                 }
368                         else badarg = 1;
369                         }
370                 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
371                         {
372                         if (badarg)
373                                 goto end;
374                         continue;
375                         }
376                 else if (!strcmp (*args, "-validity_period"))
377                         {
378                         if (args[1])
379                                 {
380                                 args++;
381                                 nsec = atol(*args);
382                                 if (nsec < 0)
383                                         {
384                                         BIO_printf(bio_err,
385                                                 "Illegal validity period %s\n",
386                                                 *args);
387                                         badarg = 1;
388                                         }
389                                 }
390                         else badarg = 1;
391                         }
392                 else if (!strcmp (*args, "-status_age"))
393                         {
394                         if (args[1])
395                                 {
396                                 args++;
397                                 maxage = atol(*args);
398                                 if (maxage < 0)
399                                         {
400                                         BIO_printf(bio_err,
401                                                 "Illegal validity age %s\n",
402                                                 *args);
403                                         badarg = 1;
404                                         }
405                                 }
406                         else badarg = 1;
407                         }
408                  else if (!strcmp(*args, "-signkey"))
409                         {
410                         if (args[1])
411                                 {
412                                 args++;
413                                 keyfile = *args;
414                                 }
415                         else badarg = 1;
416                         }
417                 else if (!strcmp(*args, "-reqout"))
418                         {
419                         if (args[1])
420                                 {
421                                 args++;
422                                 reqout = *args;
423                                 }
424                         else badarg = 1;
425                         }
426                 else if (!strcmp(*args, "-respout"))
427                         {
428                         if (args[1])
429                                 {
430                                 args++;
431                                 respout = *args;
432                                 }
433                         else badarg = 1;
434                         }
435                  else if (!strcmp(*args, "-path"))
436                         {
437                         if (args[1])
438                                 {
439                                 args++;
440                                 path = *args;
441                                 }
442                         else badarg = 1;
443                         }
444                 else if (!strcmp(*args, "-issuer"))
445                         {
446                         if (args[1])
447                                 {
448                                 args++;
449                                 X509_free(issuer);
450                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
451                                         NULL, e, "issuer certificate");
452                                 if(!issuer) goto end;
453                                 }
454                         else badarg = 1;
455                         }
456                 else if (!strcmp (*args, "-cert"))
457                         {
458                         if (args[1])
459                                 {
460                                 args++;
461                                 X509_free(cert);
462                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
463                                         NULL, e, "certificate");
464                                 if(!cert) goto end;
465                                 if (!cert_id_md) cert_id_md = EVP_sha1();
466                                 if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
467                                         goto end;
468                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
469                                         goto end;
470                                 }
471                         else badarg = 1;
472                         }
473                 else if (!strcmp(*args, "-serial"))
474                         {
475                         if (args[1])
476                                 {
477                                 args++;
478                                 if (!cert_id_md) cert_id_md = EVP_sha1();
479                                 if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
480                                         goto end;
481                                 if(!sk_OPENSSL_STRING_push(reqnames, *args))
482                                         goto end;
483                                 }
484                         else badarg = 1;
485                         }
486                 else if (!strcmp(*args, "-index"))
487                         {
488                         if (args[1])
489                                 {
490                                 args++;
491                                 ridx_filename = *args;
492                                 }
493                         else badarg = 1;
494                         }
495                 else if (!strcmp(*args, "-CA"))
496                         {
497                         if (args[1])
498                                 {
499                                 args++;
500                                 rca_filename = *args;
501                                 }
502                         else badarg = 1;
503                         }
504                 else if (!strcmp (*args, "-nmin"))
505                         {
506                         if (args[1])
507                                 {
508                                 args++;
509                                 nmin = atol(*args);
510                                 if (nmin < 0)
511                                         {
512                                         BIO_printf(bio_err,
513                                                 "Illegal update period %s\n",
514                                                 *args);
515                                         badarg = 1;
516                                         }
517                                 }
518                                 if (ndays == -1)
519                                         ndays = 0;
520                         else badarg = 1;
521                         }
522                 else if (!strcmp (*args, "-nrequest"))
523                         {
524                         if (args[1])
525                                 {
526                                 args++;
527                                 accept_count = atol(*args);
528                                 if (accept_count < 0)
529                                         {
530                                         BIO_printf(bio_err,
531                                                 "Illegal accept count %s\n",
532                                                 *args);
533                                         badarg = 1;
534                                         }
535                                 }
536                         else badarg = 1;
537                         }
538                 else if (!strcmp (*args, "-ndays"))
539                         {
540                         if (args[1])
541                                 {
542                                 args++;
543                                 ndays = atol(*args);
544                                 if (ndays < 0)
545                                         {
546                                         BIO_printf(bio_err,
547                                                 "Illegal update period %s\n",
548                                                 *args);
549                                         badarg = 1;
550                                         }
551                                 }
552                         else badarg = 1;
553                         }
554                 else if (!strcmp(*args, "-rsigner"))
555                         {
556                         if (args[1])
557                                 {
558                                 args++;
559                                 rsignfile = *args;
560                                 }
561                         else badarg = 1;
562                         }
563                 else if (!strcmp(*args, "-rkey"))
564                         {
565                         if (args[1])
566                                 {
567                                 args++;
568                                 rkeyfile = *args;
569                                 }
570                         else badarg = 1;
571                         }
572                 else if (!strcmp(*args, "-rother"))
573                         {
574                         if (args[1])
575                                 {
576                                 args++;
577                                 rcertfile = *args;
578                                 }
579                         else badarg = 1;
580                         }
581                 else if (!strcmp(*args, "-rmd"))
582                         {
583                         if (args[1])
584                                 {
585                                 args++;
586                                 rsign_md = EVP_get_digestbyname(*args);
587                                 if (!rsign_md)
588                                         badarg = 1;
589                                 }
590                         else badarg = 1;
591                         }
592                 else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL)
593                         {
594                         badarg = 1;
595                         }
596                 args++;
597                 }
598
599         /* Have we anything to do? */
600         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
601
602         if (badarg)
603                 {
604                 BIO_printf (bio_err, "OCSP utility\n");
605                 BIO_printf (bio_err, "Usage ocsp [options]\n");
606                 BIO_printf (bio_err, "where options are\n");
607                 BIO_printf (bio_err, "-out file          output filename\n");
608                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
609                 BIO_printf (bio_err, "-cert file         certificate to check\n");
610                 BIO_printf (bio_err, "-serial n          serial number to check\n");
611                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
612                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
613                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
614                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
615                 BIO_printf (bio_err, "-req_text          print text form of request\n");
616                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
617                 BIO_printf (bio_err, "-text              print text form of request and response\n");
618                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
619                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
620                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
621                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
622                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
623                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
624                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
625                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
626                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
627                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
628                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
629                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
630                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
631                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
632                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
633                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
634                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
635                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
636                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
637                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
638                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
639                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
640                 BIO_printf (bio_err, "-port num          port to run responder on\n");
641                 BIO_printf (bio_err, "-index file        certificate status index file\n");
642                 BIO_printf (bio_err, "-CA file           CA certificate\n");
643                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
644                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
645                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
646                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
647                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
648                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
649                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
650                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
651                 BIO_printf (bio_err, "-<dgst alg>     use specified digest in the request\n");
652                 BIO_printf (bio_err, "-timeout n timeout connection to OCSP responder after n seconds\n");
653                 goto end;
654                 }
655
656         if(outfile) out = BIO_new_file(outfile, "w");
657         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
658
659         if(!out)
660                 {
661                 BIO_printf(bio_err, "Error opening output file\n");
662                 goto end;
663                 }
664
665         if (!req && (add_nonce != 2)) add_nonce = 0;
666
667         if (!req && reqin)
668                 {
669                 if (!strcmp(reqin, "-"))
670                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
671                 else
672                         derbio = BIO_new_file(reqin, "rb");
673                 if (!derbio)
674                         {
675                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
676                         goto end;
677                         }
678                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
679                 BIO_free(derbio);
680                 if(!req)
681                         {
682                         BIO_printf(bio_err, "Error reading OCSP request\n");
683                         goto end;
684                         }
685                 }
686
687         if (!req && port)
688                 {
689                 acbio = init_responder(port);
690                 if (!acbio)
691                         goto end;
692                 }
693
694         if (rsignfile && !rdb)
695                 {
696                 if (!rkeyfile) rkeyfile = rsignfile;
697                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
698                         NULL, e, "responder certificate");
699                 if (!rsigner)
700                         {
701                         BIO_printf(bio_err, "Error loading responder certificate\n");
702                         goto end;
703                         }
704                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
705                         NULL, e, "CA certificate");
706                 if (rcertfile)
707                         {
708                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
709                                 NULL, e, "responder other certificates");
710                         if (!rother) goto end;
711                         }
712                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
713                         "responder private key");
714                 if (!rkey)
715                         goto end;
716                 }
717         if(acbio)
718                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
719
720         redo_accept:
721
722         if (acbio)
723                 {
724                 if (!do_responder(&req, &cbio, acbio, port))
725                         goto end;
726                 if (!req)
727                         {
728                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
729                         send_ocsp_response(cbio, resp);
730                         goto done_resp;
731                         }
732                 }
733
734         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
735                 {
736                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
737                 goto end;
738                 }
739
740         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
741
742         if (signfile)
743                 {
744                 if (!keyfile) keyfile = signfile;
745                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
746                         NULL, e, "signer certificate");
747                 if (!signer)
748                         {
749                         BIO_printf(bio_err, "Error loading signer certificate\n");
750                         goto end;
751                         }
752                 if (sign_certfile)
753                         {
754                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
755                                 NULL, e, "signer certificates");
756                         if (!sign_other) goto end;
757                         }
758                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
759                         "signer private key");
760                 if (!key)
761                         goto end;
762
763                 if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags))
764                         {
765                         BIO_printf(bio_err, "Error signing OCSP request\n");
766                         goto end;
767                         }
768                 }
769
770         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
771
772         if (reqout)
773                 {
774                 if (!strcmp(reqout, "-"))
775                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
776                 else
777                         derbio = BIO_new_file(reqout, "wb");
778                 if(!derbio)
779                         {
780                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
781                         goto end;
782                         }
783                 i2d_OCSP_REQUEST_bio(derbio, req);
784                 BIO_free(derbio);
785                 }
786
787         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
788                 {
789                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
790                 goto end;
791                 }
792
793         if (ridx_filename && !rdb)
794                 {
795                 rdb = load_index(ridx_filename, NULL);
796                 if (!rdb) goto end;
797                 if (!index_index(rdb)) goto end;
798                 }
799
800         if (rdb)
801                 {
802                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,rsign_md, rother, rflags, nmin, ndays, badsig);
803                 if (cbio)
804                         send_ocsp_response(cbio, resp);
805                 }
806         else if (host)
807                 {
808 #ifndef OPENSSL_NO_SOCK
809                 resp = process_responder(bio_err, req, host, path,
810                                         port, use_ssl, headers, req_timeout);
811                 if (!resp)
812                         goto end;
813 #else
814                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
815                 goto end;
816 #endif
817                 }
818         else if (respin)
819                 {
820                 if (!strcmp(respin, "-"))
821                         derbio = BIO_new_fp(stdin, BIO_NOCLOSE);
822                 else
823                         derbio = BIO_new_file(respin, "rb");
824                 if (!derbio)
825                         {
826                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
827                         goto end;
828                         }
829                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
830                 BIO_free(derbio);
831                 if(!resp)
832                         {
833                         BIO_printf(bio_err, "Error reading OCSP response\n");
834                         goto end;
835                         }
836         
837                 }
838         else
839                 {
840                 ret = 0;
841                 goto end;
842                 }
843
844         done_resp:
845
846         if (respout)
847                 {
848                 if (!strcmp(respout, "-"))
849                         derbio = BIO_new_fp(stdout, BIO_NOCLOSE);
850                 else
851                         derbio = BIO_new_file(respout, "wb");
852                 if(!derbio)
853                         {
854                         BIO_printf(bio_err, "Error opening file %s\n", respout);
855                         goto end;
856                         }
857                 i2d_OCSP_RESPONSE_bio(derbio, resp);
858                 BIO_free(derbio);
859                 }
860
861         i = OCSP_response_status(resp);
862
863         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
864                 {
865                 BIO_printf(out, "Responder Error: %s (%d)\n",
866                                 OCSP_response_status_str(i), i);
867                 if (ignore_err)
868                         goto redo_accept;
869                 ret = 0;
870                 goto end;
871                 }
872
873         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
874
875         /* If running as responder don't verify our own response */
876         if (cbio)
877                 {
878                 if (accept_count > 0)
879                         accept_count--;
880                 /* Redo if more connections needed */
881                 if (accept_count)
882                         {
883                         BIO_free_all(cbio);
884                         cbio = NULL;
885                         OCSP_REQUEST_free(req);
886                         req = NULL;
887                         OCSP_RESPONSE_free(resp);
888                         resp = NULL;
889                         goto redo_accept;
890                         }
891                 ret = 0;
892                 goto end;
893                 }
894         else if (ridx_filename)
895                 {
896                 ret = 0;
897                 goto end;
898                 }
899
900         if (!store)
901                 store = setup_verify(bio_err, CAfile, CApath);
902         if (!store)
903                 goto end;
904         if (vpm)
905                 X509_STORE_set1_param(store, vpm);
906         if (verify_certfile)
907                 {
908                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
909                         NULL, e, "validator certificate");
910                 if (!verify_other) goto end;
911                 }
912
913         bs = OCSP_response_get1_basic(resp);
914
915         if (!bs)
916                 {
917                 BIO_printf(bio_err, "Error parsing response\n");
918                 goto end;
919                 }
920
921         ret = 0;
922
923         if (!noverify)
924                 {
925                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
926                         {
927                         if (i == -1)
928                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
929                         else
930                                 {
931                                 BIO_printf(bio_err, "Nonce Verify error\n");
932                                 ret = 1;
933                                 goto end;
934                                 }
935                         }
936
937                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
938                 if(i <= 0)
939                         {
940                         BIO_printf(bio_err, "Response Verify Failure\n");
941                         ERR_print_errors(bio_err);
942                         ret = 1;
943                         }
944                 else
945                         BIO_printf(bio_err, "Response verify OK\n");
946
947                 }
948
949         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
950                 ret = 1;
951
952 end:
953         ERR_print_errors(bio_err);
954         X509_free(signer);
955         X509_STORE_free(store);
956         if (vpm)
957                 X509_VERIFY_PARAM_free(vpm);
958         EVP_PKEY_free(key);
959         EVP_PKEY_free(rkey);
960         X509_free(issuer);
961         X509_free(cert);
962         X509_free(rsigner);
963         X509_free(rca_cert);
964         free_index(rdb);
965         BIO_free_all(cbio);
966         BIO_free_all(acbio);
967         BIO_free(out);
968         OCSP_REQUEST_free(req);
969         OCSP_RESPONSE_free(resp);
970         OCSP_BASICRESP_free(bs);
971         sk_OPENSSL_STRING_free(reqnames);
972         sk_OCSP_CERTID_free(ids);
973         sk_X509_pop_free(sign_other, X509_free);
974         sk_X509_pop_free(verify_other, X509_free);
975         sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
976
977         if (thost)
978                 OPENSSL_free(thost);
979         if (tport)
980                 OPENSSL_free(tport);
981         if (tpath)
982                 OPENSSL_free(tpath);
983
984         OPENSSL_EXIT(ret);
985 }
986
987 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer,
988                                 STACK_OF(OCSP_CERTID) *ids)
989         {
990         OCSP_CERTID *id;
991         if(!issuer)
992                 {
993                 BIO_printf(bio_err, "No issuer certificate specified\n");
994                 return 0;
995                 }
996         if(!*req) *req = OCSP_REQUEST_new();
997         if(!*req) goto err;
998         id = OCSP_cert_to_id(cert_id_md, cert, issuer);
999         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1000         if(!OCSP_request_add0_id(*req, id)) goto err;
1001         return 1;
1002
1003         err:
1004         BIO_printf(bio_err, "Error Creating OCSP request\n");
1005         return 0;
1006         }
1007
1008 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer,
1009                                 STACK_OF(OCSP_CERTID) *ids)
1010         {
1011         OCSP_CERTID *id;
1012         X509_NAME *iname;
1013         ASN1_BIT_STRING *ikey;
1014         ASN1_INTEGER *sno;
1015         if(!issuer)
1016                 {
1017                 BIO_printf(bio_err, "No issuer certificate specified\n");
1018                 return 0;
1019                 }
1020         if(!*req) *req = OCSP_REQUEST_new();
1021         if(!*req) goto err;
1022         iname = X509_get_subject_name(issuer);
1023         ikey = X509_get0_pubkey_bitstr(issuer);
1024         sno = s2i_ASN1_INTEGER(NULL, serial);
1025         if(!sno)
1026                 {
1027                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1028                 return 0;
1029                 }
1030         id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1031         ASN1_INTEGER_free(sno);
1032         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
1033         if(!OCSP_request_add0_id(*req, id)) goto err;
1034         return 1;
1035
1036         err:
1037         BIO_printf(bio_err, "Error Creating OCSP request\n");
1038         return 0;
1039         }
1040
1041 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1042                               STACK_OF(OPENSSL_STRING) *names,
1043                               STACK_OF(OCSP_CERTID) *ids, long nsec,
1044                               long maxage)
1045         {
1046         OCSP_CERTID *id;
1047         char *name;
1048         int i;
1049
1050         int status, reason;
1051
1052         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1053
1054         if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
1055                 return 1;
1056
1057         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
1058                 {
1059                 id = sk_OCSP_CERTID_value(ids, i);
1060                 name = sk_OPENSSL_STRING_value(names, i);
1061                 BIO_printf(out, "%s: ", name);
1062
1063                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
1064                                         &rev, &thisupd, &nextupd))
1065                         {
1066                         BIO_puts(out, "ERROR: No Status found.\n");
1067                         continue;
1068                         }
1069
1070                 /* Check validity: if invalid write to output BIO so we
1071                  * know which response this refers to.
1072                  */
1073                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
1074                         {
1075                         BIO_puts(out, "WARNING: Status times invalid.\n");
1076                         ERR_print_errors(out);
1077                         }
1078                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1079
1080                 BIO_puts(out, "\tThis Update: ");
1081                 ASN1_GENERALIZEDTIME_print(out, thisupd);
1082                 BIO_puts(out, "\n");
1083
1084                 if(nextupd)
1085                         {
1086                         BIO_puts(out, "\tNext Update: ");
1087                         ASN1_GENERALIZEDTIME_print(out, nextupd);
1088                         BIO_puts(out, "\n");
1089                         }
1090
1091                 if (status != V_OCSP_CERTSTATUS_REVOKED)
1092                         continue;
1093
1094                 if (reason != -1)
1095                         BIO_printf(out, "\tReason: %s\n",
1096                                 OCSP_crl_reason_str(reason));
1097
1098                 BIO_puts(out, "\tRevocation Time: ");
1099                 ASN1_GENERALIZEDTIME_print(out, rev);
1100                 BIO_puts(out, "\n");
1101                 }
1102
1103         return 1;
1104         }
1105
1106
1107 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1108                         X509 *ca, X509 *rcert,
1109                         EVP_PKEY *rkey, const EVP_MD *rmd,
1110                         STACK_OF(X509) *rother, unsigned long flags,
1111                         int nmin, int ndays, int badsig)
1112         {
1113         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1114         OCSP_CERTID *cid, *ca_id = NULL;
1115         OCSP_BASICRESP *bs = NULL;
1116         int i, id_count, ret = 1;
1117
1118         id_count = OCSP_request_onereq_count(req);
1119
1120         if (id_count <= 0)
1121                 {
1122                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1123                 goto end;
1124                 }
1125
1126
1127         bs = OCSP_BASICRESP_new();
1128         thisupd = X509_gmtime_adj(NULL, 0);
1129         if (ndays != -1)
1130                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1131
1132         /* Examine each certificate id in the request */
1133         for (i = 0; i < id_count; i++)
1134                 {
1135                 OCSP_ONEREQ *one;
1136                 ASN1_INTEGER *serial;
1137                 char **inf;
1138                 ASN1_OBJECT *cert_id_md_oid;
1139                 const EVP_MD *cert_id_md;
1140                 one = OCSP_request_onereq_get0(req, i);
1141                 cid = OCSP_onereq_get0_id(one);
1142
1143                 OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid);
1144
1145                 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);       
1146                 if (! cert_id_md) 
1147                         {
1148                         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1149                                 NULL);
1150                                 goto end;
1151                         }       
1152                 if (ca_id) OCSP_CERTID_free(ca_id);
1153                 ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
1154
1155                 /* Is this request about our CA? */
1156                 if (OCSP_id_issuer_cmp(ca_id, cid))
1157                         {
1158                         OCSP_basic_add1_status(bs, cid,
1159                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1160                                                 0, NULL,
1161                                                 thisupd, nextupd);
1162                         continue;
1163                         }
1164                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1165                 inf = lookup_serial(db, serial);
1166                 if (!inf)
1167                         OCSP_basic_add1_status(bs, cid,
1168                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1169                                                 0, NULL,
1170                                                 thisupd, nextupd);
1171                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1172                         OCSP_basic_add1_status(bs, cid,
1173                                                 V_OCSP_CERTSTATUS_GOOD,
1174                                                 0, NULL,
1175                                                 thisupd, nextupd);
1176                 else if (inf[DB_type][0] == DB_TYPE_REV)
1177                         {
1178                         ASN1_OBJECT *inst = NULL;
1179                         ASN1_TIME *revtm = NULL;
1180                         ASN1_GENERALIZEDTIME *invtm = NULL;
1181                         OCSP_SINGLERESP *single;
1182                         int reason = -1;
1183                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1184                         single = OCSP_basic_add1_status(bs, cid,
1185                                                 V_OCSP_CERTSTATUS_REVOKED,
1186                                                 reason, revtm,
1187                                                 thisupd, nextupd);
1188                         if (invtm)
1189                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1190                         else if (inst)
1191                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1192                         ASN1_OBJECT_free(inst);
1193                         ASN1_TIME_free(revtm);
1194                         ASN1_GENERALIZEDTIME_free(invtm);
1195                         }
1196                 }
1197
1198         OCSP_copy_nonce(bs, req);
1199         
1200         OCSP_basic_sign(bs, rcert, rkey, rmd, rother, flags);
1201
1202         if (badsig)
1203                 bs->signature->data[bs->signature->length -1] ^= 0x1;
1204
1205         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1206
1207         end:
1208         ASN1_TIME_free(thisupd);
1209         ASN1_TIME_free(nextupd);
1210         OCSP_CERTID_free(ca_id);
1211         OCSP_BASICRESP_free(bs);
1212         return ret;
1213
1214         }
1215
1216 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1217         {
1218         int i;
1219         BIGNUM *bn = NULL;
1220         char *itmp, *row[DB_NUMBER],**rrow;
1221         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1222         bn = ASN1_INTEGER_to_BN(ser,NULL);
1223         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1224         if (BN_is_zero(bn))
1225                 itmp = BUF_strdup("00");
1226         else
1227                 itmp = BN_bn2hex(bn);
1228         row[DB_serial] = itmp;
1229         BN_free(bn);
1230         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1231         OPENSSL_free(itmp);
1232         return rrow;
1233         }
1234
1235 /* Quick and dirty OCSP server: read in and parse input request */
1236
1237 static BIO *init_responder(const char *port)
1238         {
1239         BIO *acbio = NULL, *bufbio = NULL;
1240         bufbio = BIO_new(BIO_f_buffer());
1241         if (!bufbio) 
1242                 goto err;
1243 #ifndef OPENSSL_NO_SOCK
1244         acbio = BIO_new_accept(port);
1245 #else
1246         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1247 #endif
1248         if (!acbio)
1249                 goto err;
1250         BIO_set_accept_bios(acbio, bufbio);
1251         bufbio = NULL;
1252
1253         if (BIO_do_accept(acbio) <= 0)
1254                 {
1255                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1256                         ERR_print_errors(bio_err);
1257                         goto err;
1258                 }
1259
1260         return acbio;
1261
1262         err:
1263         BIO_free_all(acbio);
1264         BIO_free(bufbio);
1265         return NULL;
1266         }
1267
1268 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1269                         const char *port)
1270         {
1271         int have_post = 0, len;
1272         OCSP_REQUEST *req = NULL;
1273         char inbuf[1024];
1274         BIO *cbio = NULL;
1275
1276         if (BIO_do_accept(acbio) <= 0)
1277                 {
1278                         BIO_printf(bio_err, "Error accepting connection\n");
1279                         ERR_print_errors(bio_err);
1280                         return 0;
1281                 }
1282
1283         cbio = BIO_pop(acbio);
1284         *pcbio = cbio;
1285
1286         for(;;)
1287                 {
1288                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1289                 if (len <= 0)
1290                         return 1;
1291                 /* Look for "POST" signalling start of query */
1292                 if (!have_post)
1293                         {
1294                         if(strncmp(inbuf, "POST", 4))
1295                                 {
1296                                 BIO_printf(bio_err, "Invalid request\n");
1297                                 return 1;
1298                                 }
1299                         have_post = 1;
1300                         }
1301                 /* Look for end of headers */
1302                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1303                         break;
1304                 }
1305
1306         /* Try to read OCSP request */
1307
1308         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1309
1310         if (!req)
1311                 {
1312                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1313                 ERR_print_errors(bio_err);
1314                 }
1315
1316         *preq = req;
1317
1318         return 1;
1319
1320         }
1321
1322 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1323         {
1324         char http_resp[] = 
1325                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1326                 "Content-Length: %d\r\n\r\n";
1327         if (!cbio)
1328                 return 0;
1329         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1330         i2d_OCSP_RESPONSE_bio(cbio, resp);
1331         (void)BIO_flush(cbio);
1332         return 1;
1333         }
1334
1335 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, const char *path,
1336                                       const STACK_OF(CONF_VALUE) *headers,
1337                                       OCSP_REQUEST *req, int req_timeout)
1338         {
1339         int fd;
1340         int rv;
1341         int i;
1342         OCSP_REQ_CTX *ctx = NULL;
1343         OCSP_RESPONSE *rsp = NULL;
1344         fd_set confds;
1345         struct timeval tv;
1346
1347         if (req_timeout != -1)
1348                 BIO_set_nbio(cbio, 1);
1349
1350         rv = BIO_do_connect(cbio);
1351
1352         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1353                 {
1354                 BIO_puts(err, "Error connecting BIO\n");
1355                 return NULL;
1356                 }
1357
1358         if (BIO_get_fd(cbio, &fd) <= 0)
1359                 {
1360                 BIO_puts(err, "Can't get connection fd\n");
1361                 goto err;
1362                 }
1363
1364         if (req_timeout != -1 && rv <= 0)
1365                 {
1366                 FD_ZERO(&confds);
1367                 openssl_fdset(fd, &confds);
1368                 tv.tv_usec = 0;
1369                 tv.tv_sec = req_timeout;
1370                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1371                 if (rv == 0)
1372                         {
1373                         BIO_puts(err, "Timeout on connect\n");
1374                         return NULL;
1375                         }
1376                 }
1377
1378
1379         ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1380         if (!ctx)
1381                 return NULL;
1382
1383         for (i = 0; i < sk_CONF_VALUE_num(headers); i++)
1384                 {
1385                 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1386                 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1387                         goto err;
1388                 }
1389
1390         if (!OCSP_REQ_CTX_set1_req(ctx, req))
1391                 goto err;
1392         
1393         for (;;)
1394                 {
1395                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1396                 if (rv != -1)
1397                         break;
1398                 if (req_timeout == -1)
1399                         continue;
1400                 FD_ZERO(&confds);
1401                 openssl_fdset(fd, &confds);
1402                 tv.tv_usec = 0;
1403                 tv.tv_sec = req_timeout;
1404                 if (BIO_should_read(cbio))
1405                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1406                 else if (BIO_should_write(cbio))
1407                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1408                 else
1409                         {
1410                         BIO_puts(err, "Unexpected retry condition\n");
1411                         goto err;
1412                         }
1413                 if (rv == 0)
1414                         {
1415                         BIO_puts(err, "Timeout on request\n");
1416                         break;
1417                         }
1418                 if (rv == -1)
1419                         {
1420                         BIO_puts(err, "Select error\n");
1421                         break;
1422                         }
1423
1424                 }
1425         err:
1426         if (ctx)
1427                 OCSP_REQ_CTX_free(ctx);
1428
1429         return rsp;
1430         }
1431
1432 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1433                                  const char *host, const char *path,
1434                                  const char *port, int use_ssl,
1435                                  const STACK_OF(CONF_VALUE) *headers,
1436                                  int req_timeout)
1437         {
1438         BIO *cbio = NULL;
1439         SSL_CTX *ctx = NULL;
1440         OCSP_RESPONSE *resp = NULL;
1441         cbio = BIO_new_connect(host);
1442         if (!cbio)
1443                 {
1444                 BIO_printf(err, "Error creating connect BIO\n");
1445                 goto end;
1446                 }
1447         if (port) BIO_set_conn_port(cbio, port);
1448         if (use_ssl == 1)
1449                 {
1450                 BIO *sbio;
1451 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1452                 ctx = SSL_CTX_new(SSLv23_client_method());
1453 #elif !defined(OPENSSL_NO_SSL3)
1454                 ctx = SSL_CTX_new(SSLv3_client_method());
1455 #elif !defined(OPENSSL_NO_SSL2)
1456                 ctx = SSL_CTX_new(SSLv2_client_method());
1457 #else
1458                 BIO_printf(err, "SSL is disabled\n");
1459                         goto end;
1460 #endif
1461                 if (ctx == NULL)
1462                         {
1463                         BIO_printf(err, "Error creating SSL context.\n");
1464                         goto end;
1465                         }
1466                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1467                 sbio = BIO_new_ssl(ctx, 1);
1468                 cbio = BIO_push(sbio, cbio);
1469                 }
1470         resp = query_responder(err, cbio, path, headers, req, req_timeout);
1471         if (!resp)
1472                 BIO_printf(bio_err, "Error querying OCSP responder\n");
1473         end:
1474         if (cbio)
1475                 BIO_free_all(cbio);
1476         if (ctx)
1477                 SSL_CTX_free(ctx);
1478         return resp;
1479         }
1480
1481 #endif