Support for certificate status TLS extension.
[openssl.git] / apps / ocsp.c
1 /* ocsp.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3  * project 2000.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer. 
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 #ifndef OPENSSL_NO_OCSP
59
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <openssl/e_os2.h>
64 #include <openssl/bio.h>
65 #include <openssl/ocsp.h>
66 #include <openssl/txt_db.h>
67 #include <openssl/ssl.h>
68 #include "apps.h"
69
70 /* Maximum leeway in validity period: default 5 minutes */
71 #define MAX_VALIDITY_PERIOD     (5 * 60)
72
73 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
74                                 STACK_OF(OCSP_CERTID) *ids);
75 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
76                                 STACK_OF(OCSP_CERTID) *ids);
77 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
78                                 STACK *names, STACK_OF(OCSP_CERTID) *ids,
79                                 long nsec, long maxage);
80
81 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
82                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
83                         STACK_OF(X509) *rother, unsigned long flags,
84                         int nmin, int ndays);
85
86 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
87 static BIO *init_responder(char *port);
88 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
89 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
90 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
91                                 OCSP_REQUEST *req, int req_timeout);
92
93 #undef PROG
94 #define PROG ocsp_main
95
96 int MAIN(int, char **);
97
98 int MAIN(int argc, char **argv)
99         {
100         ENGINE *e = NULL;
101         char **args;
102         char *host = NULL, *port = NULL, *path = "/";
103         char *reqin = NULL, *respin = NULL;
104         char *reqout = NULL, *respout = NULL;
105         char *signfile = NULL, *keyfile = NULL;
106         char *rsignfile = NULL, *rkeyfile = NULL;
107         char *outfile = NULL;
108         int add_nonce = 1, noverify = 0, use_ssl = -1;
109         OCSP_REQUEST *req = NULL;
110         OCSP_RESPONSE *resp = NULL;
111         OCSP_BASICRESP *bs = NULL;
112         X509 *issuer = NULL, *cert = NULL;
113         X509 *signer = NULL, *rsigner = NULL;
114         EVP_PKEY *key = NULL, *rkey = NULL;
115         BIO *acbio = NULL, *cbio = NULL;
116         BIO *derbio = NULL;
117         BIO *out = NULL;
118         int req_timeout = -1;
119         int req_text = 0, resp_text = 0;
120         long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
121         char *CAfile = NULL, *CApath = NULL;
122         X509_STORE *store = NULL;
123         STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
124         char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
125         unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
126         int ret = 1;
127         int accept_count = -1;
128         int badarg = 0;
129         int i;
130         int ignore_err = 0;
131         STACK *reqnames = NULL;
132         STACK_OF(OCSP_CERTID) *ids = NULL;
133
134         X509 *rca_cert = NULL;
135         char *ridx_filename = NULL;
136         char *rca_filename = NULL;
137         CA_DB *rdb = NULL;
138         int nmin = 0, ndays = -1;
139
140         if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
141
142         if (!load_config(bio_err, NULL))
143                 goto end;
144         SSL_load_error_strings();
145         OpenSSL_add_ssl_algorithms();
146         args = argv + 1;
147         reqnames = sk_new_null();
148         ids = sk_OCSP_CERTID_new_null();
149         while (!badarg && *args && *args[0] == '-')
150                 {
151                 if (!strcmp(*args, "-out"))
152                         {
153                         if (args[1])
154                                 {
155                                 args++;
156                                 outfile = *args;
157                                 }
158                         else badarg = 1;
159                         }
160                 else if (!strcmp(*args, "-timeout"))
161                         {
162                         if (args[1])
163                                 {
164                                 args++;
165                                 req_timeout = atol(*args);
166                                 if (req_timeout < 0)
167                                         {
168                                         BIO_printf(bio_err,
169                                                 "Illegal timeout value %s\n",
170                                                 *args);
171                                         badarg = 1;
172                                         }
173                                 }
174                         else badarg = 1;
175                         }
176                 else if (!strcmp(*args, "-url"))
177                         {
178                         if (args[1])
179                                 {
180                                 args++;
181                                 if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
182                                         {
183                                         BIO_printf(bio_err, "Error parsing URL\n");
184                                         badarg = 1;
185                                         }
186                                 }
187                         else badarg = 1;
188                         }
189                 else if (!strcmp(*args, "-host"))
190                         {
191                         if (args[1])
192                                 {
193                                 args++;
194                                 host = *args;
195                                 }
196                         else badarg = 1;
197                         }
198                 else if (!strcmp(*args, "-port"))
199                         {
200                         if (args[1])
201                                 {
202                                 args++;
203                                 port = *args;
204                                 }
205                         else badarg = 1;
206                         }
207                 else if (!strcmp(*args, "-ignore_err"))
208                         ignore_err = 1;
209                 else if (!strcmp(*args, "-noverify"))
210                         noverify = 1;
211                 else if (!strcmp(*args, "-nonce"))
212                         add_nonce = 2;
213                 else if (!strcmp(*args, "-no_nonce"))
214                         add_nonce = 0;
215                 else if (!strcmp(*args, "-resp_no_certs"))
216                         rflags |= OCSP_NOCERTS;
217                 else if (!strcmp(*args, "-resp_key_id"))
218                         rflags |= OCSP_RESPID_KEY;
219                 else if (!strcmp(*args, "-no_certs"))
220                         sign_flags |= OCSP_NOCERTS;
221                 else if (!strcmp(*args, "-no_signature_verify"))
222                         verify_flags |= OCSP_NOSIGS;
223                 else if (!strcmp(*args, "-no_cert_verify"))
224                         verify_flags |= OCSP_NOVERIFY;
225                 else if (!strcmp(*args, "-no_chain"))
226                         verify_flags |= OCSP_NOCHAIN;
227                 else if (!strcmp(*args, "-no_cert_checks"))
228                         verify_flags |= OCSP_NOCHECKS;
229                 else if (!strcmp(*args, "-no_explicit"))
230                         verify_flags |= OCSP_NOEXPLICIT;
231                 else if (!strcmp(*args, "-trust_other"))
232                         verify_flags |= OCSP_TRUSTOTHER;
233                 else if (!strcmp(*args, "-no_intern"))
234                         verify_flags |= OCSP_NOINTERN;
235                 else if (!strcmp(*args, "-text"))
236                         {
237                         req_text = 1;
238                         resp_text = 1;
239                         }
240                 else if (!strcmp(*args, "-req_text"))
241                         req_text = 1;
242                 else if (!strcmp(*args, "-resp_text"))
243                         resp_text = 1;
244                 else if (!strcmp(*args, "-reqin"))
245                         {
246                         if (args[1])
247                                 {
248                                 args++;
249                                 reqin = *args;
250                                 }
251                         else badarg = 1;
252                         }
253                 else if (!strcmp(*args, "-respin"))
254                         {
255                         if (args[1])
256                                 {
257                                 args++;
258                                 respin = *args;
259                                 }
260                         else badarg = 1;
261                         }
262                 else if (!strcmp(*args, "-signer"))
263                         {
264                         if (args[1])
265                                 {
266                                 args++;
267                                 signfile = *args;
268                                 }
269                         else badarg = 1;
270                         }
271                 else if (!strcmp (*args, "-VAfile"))
272                         {
273                         if (args[1])
274                                 {
275                                 args++;
276                                 verify_certfile = *args;
277                                 verify_flags |= OCSP_TRUSTOTHER;
278                                 }
279                         else badarg = 1;
280                         }
281                 else if (!strcmp(*args, "-sign_other"))
282                         {
283                         if (args[1])
284                                 {
285                                 args++;
286                                 sign_certfile = *args;
287                                 }
288                         else badarg = 1;
289                         }
290                 else if (!strcmp(*args, "-verify_other"))
291                         {
292                         if (args[1])
293                                 {
294                                 args++;
295                                 verify_certfile = *args;
296                                 }
297                         else badarg = 1;
298                         }
299                 else if (!strcmp (*args, "-CAfile"))
300                         {
301                         if (args[1])
302                                 {
303                                 args++;
304                                 CAfile = *args;
305                                 }
306                         else badarg = 1;
307                         }
308                 else if (!strcmp (*args, "-CApath"))
309                         {
310                         if (args[1])
311                                 {
312                                 args++;
313                                 CApath = *args;
314                                 }
315                         else badarg = 1;
316                         }
317                 else if (!strcmp (*args, "-validity_period"))
318                         {
319                         if (args[1])
320                                 {
321                                 args++;
322                                 nsec = atol(*args);
323                                 if (nsec < 0)
324                                         {
325                                         BIO_printf(bio_err,
326                                                 "Illegal validity period %s\n",
327                                                 *args);
328                                         badarg = 1;
329                                         }
330                                 }
331                         else badarg = 1;
332                         }
333                 else if (!strcmp (*args, "-status_age"))
334                         {
335                         if (args[1])
336                                 {
337                                 args++;
338                                 maxage = atol(*args);
339                                 if (maxage < 0)
340                                         {
341                                         BIO_printf(bio_err,
342                                                 "Illegal validity age %s\n",
343                                                 *args);
344                                         badarg = 1;
345                                         }
346                                 }
347                         else badarg = 1;
348                         }
349                  else if (!strcmp(*args, "-signkey"))
350                         {
351                         if (args[1])
352                                 {
353                                 args++;
354                                 keyfile = *args;
355                                 }
356                         else badarg = 1;
357                         }
358                 else if (!strcmp(*args, "-reqout"))
359                         {
360                         if (args[1])
361                                 {
362                                 args++;
363                                 reqout = *args;
364                                 }
365                         else badarg = 1;
366                         }
367                 else if (!strcmp(*args, "-respout"))
368                         {
369                         if (args[1])
370                                 {
371                                 args++;
372                                 respout = *args;
373                                 }
374                         else badarg = 1;
375                         }
376                  else if (!strcmp(*args, "-path"))
377                         {
378                         if (args[1])
379                                 {
380                                 args++;
381                                 path = *args;
382                                 }
383                         else badarg = 1;
384                         }
385                 else if (!strcmp(*args, "-issuer"))
386                         {
387                         if (args[1])
388                                 {
389                                 args++;
390                                 X509_free(issuer);
391                                 issuer = load_cert(bio_err, *args, FORMAT_PEM,
392                                         NULL, e, "issuer certificate");
393                                 if(!issuer) goto end;
394                                 }
395                         else badarg = 1;
396                         }
397                 else if (!strcmp (*args, "-cert"))
398                         {
399                         if (args[1])
400                                 {
401                                 args++;
402                                 X509_free(cert);
403                                 cert = load_cert(bio_err, *args, FORMAT_PEM,
404                                         NULL, e, "certificate");
405                                 if(!cert) goto end;
406                                 if(!add_ocsp_cert(&req, cert, issuer, ids))
407                                         goto end;
408                                 if(!sk_push(reqnames, *args))
409                                         goto end;
410                                 }
411                         else badarg = 1;
412                         }
413                 else if (!strcmp(*args, "-serial"))
414                         {
415                         if (args[1])
416                                 {
417                                 args++;
418                                 if(!add_ocsp_serial(&req, *args, issuer, ids))
419                                         goto end;
420                                 if(!sk_push(reqnames, *args))
421                                         goto end;
422                                 }
423                         else badarg = 1;
424                         }
425                 else if (!strcmp(*args, "-index"))
426                         {
427                         if (args[1])
428                                 {
429                                 args++;
430                                 ridx_filename = *args;
431                                 }
432                         else badarg = 1;
433                         }
434                 else if (!strcmp(*args, "-CA"))
435                         {
436                         if (args[1])
437                                 {
438                                 args++;
439                                 rca_filename = *args;
440                                 }
441                         else badarg = 1;
442                         }
443                 else if (!strcmp (*args, "-nmin"))
444                         {
445                         if (args[1])
446                                 {
447                                 args++;
448                                 nmin = atol(*args);
449                                 if (nmin < 0)
450                                         {
451                                         BIO_printf(bio_err,
452                                                 "Illegal update period %s\n",
453                                                 *args);
454                                         badarg = 1;
455                                         }
456                                 }
457                                 if (ndays == -1)
458                                         ndays = 0;
459                         else badarg = 1;
460                         }
461                 else if (!strcmp (*args, "-nrequest"))
462                         {
463                         if (args[1])
464                                 {
465                                 args++;
466                                 accept_count = atol(*args);
467                                 if (accept_count < 0)
468                                         {
469                                         BIO_printf(bio_err,
470                                                 "Illegal accept count %s\n",
471                                                 *args);
472                                         badarg = 1;
473                                         }
474                                 }
475                         else badarg = 1;
476                         }
477                 else if (!strcmp (*args, "-ndays"))
478                         {
479                         if (args[1])
480                                 {
481                                 args++;
482                                 ndays = atol(*args);
483                                 if (ndays < 0)
484                                         {
485                                         BIO_printf(bio_err,
486                                                 "Illegal update period %s\n",
487                                                 *args);
488                                         badarg = 1;
489                                         }
490                                 }
491                         else badarg = 1;
492                         }
493                 else if (!strcmp(*args, "-rsigner"))
494                         {
495                         if (args[1])
496                                 {
497                                 args++;
498                                 rsignfile = *args;
499                                 }
500                         else badarg = 1;
501                         }
502                 else if (!strcmp(*args, "-rkey"))
503                         {
504                         if (args[1])
505                                 {
506                                 args++;
507                                 rkeyfile = *args;
508                                 }
509                         else badarg = 1;
510                         }
511                 else if (!strcmp(*args, "-rother"))
512                         {
513                         if (args[1])
514                                 {
515                                 args++;
516                                 rcertfile = *args;
517                                 }
518                         else badarg = 1;
519                         }
520                 else badarg = 1;
521                 args++;
522                 }
523
524         /* Have we anything to do? */
525         if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
526
527         if (badarg)
528                 {
529                 BIO_printf (bio_err, "OCSP utility\n");
530                 BIO_printf (bio_err, "Usage ocsp [options]\n");
531                 BIO_printf (bio_err, "where options are\n");
532                 BIO_printf (bio_err, "-out file          output filename\n");
533                 BIO_printf (bio_err, "-issuer file       issuer certificate\n");
534                 BIO_printf (bio_err, "-cert file         certificate to check\n");
535                 BIO_printf (bio_err, "-serial n          serial number to check\n");
536                 BIO_printf (bio_err, "-signer file       certificate to sign OCSP request with\n");
537                 BIO_printf (bio_err, "-signkey file      private key to sign OCSP request with\n");
538                 BIO_printf (bio_err, "-sign_other file   additional certificates to include in signed request\n");
539                 BIO_printf (bio_err, "-no_certs          don't include any certificates in signed request\n");
540                 BIO_printf (bio_err, "-req_text          print text form of request\n");
541                 BIO_printf (bio_err, "-resp_text         print text form of response\n");
542                 BIO_printf (bio_err, "-text              print text form of request and response\n");
543                 BIO_printf (bio_err, "-reqout file       write DER encoded OCSP request to \"file\"\n");
544                 BIO_printf (bio_err, "-respout file      write DER encoded OCSP reponse to \"file\"\n");
545                 BIO_printf (bio_err, "-reqin file        read DER encoded OCSP request from \"file\"\n");
546                 BIO_printf (bio_err, "-respin file       read DER encoded OCSP reponse from \"file\"\n");
547                 BIO_printf (bio_err, "-nonce             add OCSP nonce to request\n");
548                 BIO_printf (bio_err, "-no_nonce          don't add OCSP nonce to request\n");
549                 BIO_printf (bio_err, "-url URL           OCSP responder URL\n");
550                 BIO_printf (bio_err, "-host host:n       send OCSP request to host on port n\n");
551                 BIO_printf (bio_err, "-path              path to use in OCSP request\n");
552                 BIO_printf (bio_err, "-CApath dir        trusted certificates directory\n");
553                 BIO_printf (bio_err, "-CAfile file       trusted certificates file\n");
554                 BIO_printf (bio_err, "-VAfile file       validator certificates file\n");
555                 BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
556                 BIO_printf (bio_err, "-status_age n      maximum status age in seconds\n");
557                 BIO_printf (bio_err, "-noverify          don't verify response at all\n");
558                 BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
559                 BIO_printf (bio_err, "-trust_other       don't verify additional certificates\n");
560                 BIO_printf (bio_err, "-no_intern         don't search certificates contained in response for signer\n");
561                 BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
562                 BIO_printf (bio_err, "-no_cert_verify    don't check signing certificate\n");
563                 BIO_printf (bio_err, "-no_chain          don't chain verify response\n");
564                 BIO_printf (bio_err, "-no_cert_checks    don't do additional checks on signing certificate\n");
565                 BIO_printf (bio_err, "-port num          port to run responder on\n");
566                 BIO_printf (bio_err, "-index file        certificate status index file\n");
567                 BIO_printf (bio_err, "-CA file           CA certificate\n");
568                 BIO_printf (bio_err, "-rsigner file      responder certificate to sign responses with\n");
569                 BIO_printf (bio_err, "-rkey file         responder key to sign responses with\n");
570                 BIO_printf (bio_err, "-rother file       other certificates to include in response\n");
571                 BIO_printf (bio_err, "-resp_no_certs     don't include any certificates in response\n");
572                 BIO_printf (bio_err, "-nmin n            number of minutes before next update\n");
573                 BIO_printf (bio_err, "-ndays n           number of days before next update\n");
574                 BIO_printf (bio_err, "-resp_key_id       identify reponse by signing certificate key ID\n");
575                 BIO_printf (bio_err, "-nrequest n        number of requests to accept (default unlimited)\n");
576                 goto end;
577                 }
578
579         if(outfile) out = BIO_new_file(outfile, "w");
580         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
581
582         if(!out)
583                 {
584                 BIO_printf(bio_err, "Error opening output file\n");
585                 goto end;
586                 }
587
588         if (!req && (add_nonce != 2)) add_nonce = 0;
589
590         if (!req && reqin)
591                 {
592                 derbio = BIO_new_file(reqin, "rb");
593                 if (!derbio)
594                         {
595                         BIO_printf(bio_err, "Error Opening OCSP request file\n");
596                         goto end;
597                         }
598                 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
599                 BIO_free(derbio);
600                 if(!req)
601                         {
602                         BIO_printf(bio_err, "Error reading OCSP request\n");
603                         goto end;
604                         }
605                 }
606
607         if (!req && port)
608                 {
609                 acbio = init_responder(port);
610                 if (!acbio)
611                         goto end;
612                 }
613
614         if (rsignfile && !rdb)
615                 {
616                 if (!rkeyfile) rkeyfile = rsignfile;
617                 rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
618                         NULL, e, "responder certificate");
619                 if (!rsigner)
620                         {
621                         BIO_printf(bio_err, "Error loading responder certificate\n");
622                         goto end;
623                         }
624                 rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
625                         NULL, e, "CA certificate");
626                 if (rcertfile)
627                         {
628                         rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
629                                 NULL, e, "responder other certificates");
630                         if (!rother) goto end;
631                         }
632                 rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
633                         "responder private key");
634                 if (!rkey)
635                         goto end;
636                 }
637         if(acbio)
638                 BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
639
640         redo_accept:
641
642         if (acbio)
643                 {
644                 if (!do_responder(&req, &cbio, acbio, port))
645                         goto end;
646                 if (!req)
647                         {
648                         resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
649                         send_ocsp_response(cbio, resp);
650                         goto done_resp;
651                         }
652                 }
653
654         if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
655                 {
656                 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
657                 goto end;
658                 }
659
660         if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
661
662         if (signfile)
663                 {
664                 if (!keyfile) keyfile = signfile;
665                 signer = load_cert(bio_err, signfile, FORMAT_PEM,
666                         NULL, e, "signer certificate");
667                 if (!signer)
668                         {
669                         BIO_printf(bio_err, "Error loading signer certificate\n");
670                         goto end;
671                         }
672                 if (sign_certfile)
673                         {
674                         sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
675                                 NULL, e, "signer certificates");
676                         if (!sign_other) goto end;
677                         }
678                 key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
679                         "signer private key");
680                 if (!key)
681                         goto end;
682                 if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
683                         {
684                         BIO_printf(bio_err, "Error signing OCSP request\n");
685                         goto end;
686                         }
687                 }
688
689         if (req_text && req) OCSP_REQUEST_print(out, req, 0);
690
691         if (reqout)
692                 {
693                 derbio = BIO_new_file(reqout, "wb");
694                 if(!derbio)
695                         {
696                         BIO_printf(bio_err, "Error opening file %s\n", reqout);
697                         goto end;
698                         }
699                 i2d_OCSP_REQUEST_bio(derbio, req);
700                 BIO_free(derbio);
701                 }
702
703         if (ridx_filename && (!rkey || !rsigner || !rca_cert))
704                 {
705                 BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
706                 goto end;
707                 }
708
709         if (ridx_filename && !rdb)
710                 {
711                 rdb = load_index(ridx_filename, NULL);
712                 if (!rdb) goto end;
713                 if (!index_index(rdb)) goto end;
714                 }
715
716         if (rdb)
717                 {
718                 i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
719                 if (cbio)
720                         send_ocsp_response(cbio, resp);
721                 }
722         else if (host)
723                 {
724 #ifndef OPENSSL_NO_SOCK
725                 resp = process_responder(bio_err, req, host, path,
726                                                 port, use_ssl, req_timeout);
727                 if (!resp)
728                         goto end;
729 #else
730                 BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
731                 goto end;
732 #endif
733                 }
734         else if (respin)
735                 {
736                 derbio = BIO_new_file(respin, "rb");
737                 if (!derbio)
738                         {
739                         BIO_printf(bio_err, "Error Opening OCSP response file\n");
740                         goto end;
741                         }
742                 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
743                 BIO_free(derbio);
744                 if(!resp)
745                         {
746                         BIO_printf(bio_err, "Error reading OCSP response\n");
747                         goto end;
748                         }
749         
750                 }
751         else
752                 {
753                 ret = 0;
754                 goto end;
755                 }
756
757         done_resp:
758
759         if (respout)
760                 {
761                 derbio = BIO_new_file(respout, "wb");
762                 if(!derbio)
763                         {
764                         BIO_printf(bio_err, "Error opening file %s\n", respout);
765                         goto end;
766                         }
767                 i2d_OCSP_RESPONSE_bio(derbio, resp);
768                 BIO_free(derbio);
769                 }
770
771         i = OCSP_response_status(resp);
772
773         if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
774                 {
775                 BIO_printf(out, "Responder Error: %s (%d)\n",
776                                 OCSP_response_status_str(i), i);
777                 if (ignore_err)
778                         goto redo_accept;
779                 ret = 0;
780                 goto end;
781                 }
782
783         if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
784
785         /* If running as responder don't verify our own response */
786         if (cbio)
787                 {
788                 if (accept_count > 0)
789                         accept_count--;
790                 /* Redo if more connections needed */
791                 if (accept_count)
792                         {
793                         BIO_free_all(cbio);
794                         cbio = NULL;
795                         OCSP_REQUEST_free(req);
796                         req = NULL;
797                         OCSP_RESPONSE_free(resp);
798                         resp = NULL;
799                         goto redo_accept;
800                         }
801                 goto end;
802                 }
803
804         if (!store)
805                 store = setup_verify(bio_err, CAfile, CApath);
806         if (!store)
807                 goto end;
808         if (verify_certfile)
809                 {
810                 verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
811                         NULL, e, "validator certificate");
812                 if (!verify_other) goto end;
813                 }
814
815         bs = OCSP_response_get1_basic(resp);
816
817         if (!bs)
818                 {
819                 BIO_printf(bio_err, "Error parsing response\n");
820                 goto end;
821                 }
822
823         if (!noverify)
824                 {
825                 if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
826                         {
827                         if (i == -1)
828                                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
829                         else
830                                 {
831                                 BIO_printf(bio_err, "Nonce Verify error\n");
832                                 goto end;
833                                 }
834                         }
835
836                 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
837                 if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
838
839                 if(i <= 0)
840                         {
841                         BIO_printf(bio_err, "Response Verify Failure\n");
842                         ERR_print_errors(bio_err);
843                         }
844                 else
845                         BIO_printf(bio_err, "Response verify OK\n");
846
847                 }
848
849         if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
850                 goto end;
851
852         ret = 0;
853
854 end:
855         ERR_print_errors(bio_err);
856         X509_free(signer);
857         X509_STORE_free(store);
858         EVP_PKEY_free(key);
859         EVP_PKEY_free(rkey);
860         X509_free(issuer);
861         X509_free(cert);
862         X509_free(rsigner);
863         X509_free(rca_cert);
864         free_index(rdb);
865         BIO_free_all(cbio);
866         BIO_free_all(acbio);
867         BIO_free(out);
868         OCSP_REQUEST_free(req);
869         OCSP_RESPONSE_free(resp);
870         OCSP_BASICRESP_free(bs);
871         sk_free(reqnames);
872         sk_OCSP_CERTID_free(ids);
873         sk_X509_pop_free(sign_other, X509_free);
874         sk_X509_pop_free(verify_other, X509_free);
875
876         if (use_ssl != -1)
877                 {
878                 OPENSSL_free(host);
879                 OPENSSL_free(port);
880                 OPENSSL_free(path);
881                 }
882
883         OPENSSL_EXIT(ret);
884 }
885
886 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
887                                 STACK_OF(OCSP_CERTID) *ids)
888         {
889         OCSP_CERTID *id;
890         if(!issuer)
891                 {
892                 BIO_printf(bio_err, "No issuer certificate specified\n");
893                 return 0;
894                 }
895         if(!*req) *req = OCSP_REQUEST_new();
896         if(!*req) goto err;
897         id = OCSP_cert_to_id(NULL, cert, issuer);
898         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
899         if(!OCSP_request_add0_id(*req, id)) goto err;
900         return 1;
901
902         err:
903         BIO_printf(bio_err, "Error Creating OCSP request\n");
904         return 0;
905         }
906
907 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
908                                 STACK_OF(OCSP_CERTID) *ids)
909         {
910         OCSP_CERTID *id;
911         X509_NAME *iname;
912         ASN1_BIT_STRING *ikey;
913         ASN1_INTEGER *sno;
914         if(!issuer)
915                 {
916                 BIO_printf(bio_err, "No issuer certificate specified\n");
917                 return 0;
918                 }
919         if(!*req) *req = OCSP_REQUEST_new();
920         if(!*req) goto err;
921         iname = X509_get_subject_name(issuer);
922         ikey = X509_get0_pubkey_bitstr(issuer);
923         sno = s2i_ASN1_INTEGER(NULL, serial);
924         if(!sno)
925                 {
926                 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
927                 return 0;
928                 }
929         id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
930         ASN1_INTEGER_free(sno);
931         if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
932         if(!OCSP_request_add0_id(*req, id)) goto err;
933         return 1;
934
935         err:
936         BIO_printf(bio_err, "Error Creating OCSP request\n");
937         return 0;
938         }
939
940 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
941                                         STACK *names, STACK_OF(OCSP_CERTID) *ids,
942                                         long nsec, long maxage)
943         {
944         OCSP_CERTID *id;
945         char *name;
946         int i;
947
948         int status, reason;
949
950         ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
951
952         if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
953                 return 1;
954
955         for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
956                 {
957                 id = sk_OCSP_CERTID_value(ids, i);
958                 name = sk_value(names, i);
959                 BIO_printf(out, "%s: ", name);
960
961                 if(!OCSP_resp_find_status(bs, id, &status, &reason,
962                                         &rev, &thisupd, &nextupd))
963                         {
964                         BIO_puts(out, "ERROR: No Status found.\n");
965                         continue;
966                         }
967
968                 /* Check validity: if invalid write to output BIO so we
969                  * know which response this refers to.
970                  */
971                 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
972                         {
973                         BIO_puts(out, "WARNING: Status times invalid.\n");
974                         ERR_print_errors(out);
975                         }
976                 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
977
978                 BIO_puts(out, "\tThis Update: ");
979                 ASN1_GENERALIZEDTIME_print(out, thisupd);
980                 BIO_puts(out, "\n");
981
982                 if(nextupd)
983                         {
984                         BIO_puts(out, "\tNext Update: ");
985                         ASN1_GENERALIZEDTIME_print(out, nextupd);
986                         BIO_puts(out, "\n");
987                         }
988
989                 if (status != V_OCSP_CERTSTATUS_REVOKED)
990                         continue;
991
992                 if (reason != -1)
993                         BIO_printf(out, "\tReason: %s\n",
994                                 OCSP_crl_reason_str(reason));
995
996                 BIO_puts(out, "\tRevocation Time: ");
997                 ASN1_GENERALIZEDTIME_print(out, rev);
998                 BIO_puts(out, "\n");
999                 }
1000
1001         return 1;
1002         }
1003
1004
1005 static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
1006                         X509 *ca, X509 *rcert, EVP_PKEY *rkey,
1007                         STACK_OF(X509) *rother, unsigned long flags,
1008                         int nmin, int ndays)
1009         {
1010         ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1011         OCSP_CERTID *cid, *ca_id = NULL;
1012         OCSP_BASICRESP *bs = NULL;
1013         int i, id_count, ret = 1;
1014
1015
1016         id_count = OCSP_request_onereq_count(req);
1017
1018         if (id_count <= 0)
1019                 {
1020                 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1021                 goto end;
1022                 }
1023
1024         ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
1025
1026         bs = OCSP_BASICRESP_new();
1027         thisupd = X509_gmtime_adj(NULL, 0);
1028         if (ndays != -1)
1029                 nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
1030
1031         /* Examine each certificate id in the request */
1032         for (i = 0; i < id_count; i++)
1033                 {
1034                 OCSP_ONEREQ *one;
1035                 ASN1_INTEGER *serial;
1036                 char **inf;
1037                 one = OCSP_request_onereq_get0(req, i);
1038                 cid = OCSP_onereq_get0_id(one);
1039                 /* Is this request about our CA? */
1040                 if (OCSP_id_issuer_cmp(ca_id, cid))
1041                         {
1042                         OCSP_basic_add1_status(bs, cid,
1043                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1044                                                 0, NULL,
1045                                                 thisupd, nextupd);
1046                         continue;
1047                         }
1048                 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1049                 inf = lookup_serial(db, serial);
1050                 if (!inf)
1051                         OCSP_basic_add1_status(bs, cid,
1052                                                 V_OCSP_CERTSTATUS_UNKNOWN,
1053                                                 0, NULL,
1054                                                 thisupd, nextupd);
1055                 else if (inf[DB_type][0] == DB_TYPE_VAL)
1056                         OCSP_basic_add1_status(bs, cid,
1057                                                 V_OCSP_CERTSTATUS_GOOD,
1058                                                 0, NULL,
1059                                                 thisupd, nextupd);
1060                 else if (inf[DB_type][0] == DB_TYPE_REV)
1061                         {
1062                         ASN1_OBJECT *inst = NULL;
1063                         ASN1_TIME *revtm = NULL;
1064                         ASN1_GENERALIZEDTIME *invtm = NULL;
1065                         OCSP_SINGLERESP *single;
1066                         int reason = -1;
1067                         unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1068                         single = OCSP_basic_add1_status(bs, cid,
1069                                                 V_OCSP_CERTSTATUS_REVOKED,
1070                                                 reason, revtm,
1071                                                 thisupd, nextupd);
1072                         if (invtm)
1073                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
1074                         else if (inst)
1075                                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
1076                         ASN1_OBJECT_free(inst);
1077                         ASN1_TIME_free(revtm);
1078                         ASN1_GENERALIZEDTIME_free(invtm);
1079                         }
1080                 }
1081
1082         OCSP_copy_nonce(bs, req);
1083                 
1084         OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
1085
1086         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1087
1088         end:
1089         ASN1_TIME_free(thisupd);
1090         ASN1_TIME_free(nextupd);
1091         OCSP_CERTID_free(ca_id);
1092         OCSP_BASICRESP_free(bs);
1093         return ret;
1094
1095         }
1096
1097 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1098         {
1099         int i;
1100         BIGNUM *bn = NULL;
1101         char *itmp, *row[DB_NUMBER],**rrow;
1102         for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
1103         bn = ASN1_INTEGER_to_BN(ser,NULL);
1104         OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */
1105         if (BN_is_zero(bn))
1106                 itmp = BUF_strdup("00");
1107         else
1108                 itmp = BN_bn2hex(bn);
1109         row[DB_serial] = itmp;
1110         BN_free(bn);
1111         rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
1112         OPENSSL_free(itmp);
1113         return rrow;
1114         }
1115
1116 /* Quick and dirty OCSP server: read in and parse input request */
1117
1118 static BIO *init_responder(char *port)
1119         {
1120         BIO *acbio = NULL, *bufbio = NULL;
1121         bufbio = BIO_new(BIO_f_buffer());
1122         if (!bufbio) 
1123                 goto err;
1124 #ifndef OPENSSL_NO_SOCK
1125         acbio = BIO_new_accept(port);
1126 #else
1127         BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
1128 #endif
1129         if (!acbio)
1130                 goto err;
1131         BIO_set_accept_bios(acbio, bufbio);
1132         bufbio = NULL;
1133
1134         if (BIO_do_accept(acbio) <= 0)
1135                 {
1136                         BIO_printf(bio_err, "Error setting up accept BIO\n");
1137                         ERR_print_errors(bio_err);
1138                         goto err;
1139                 }
1140
1141         return acbio;
1142
1143         err:
1144         BIO_free_all(acbio);
1145         BIO_free(bufbio);
1146         return NULL;
1147         }
1148
1149 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
1150         {
1151         int have_post = 0, len;
1152         OCSP_REQUEST *req = NULL;
1153         char inbuf[1024];
1154         BIO *cbio = NULL;
1155
1156         if (BIO_do_accept(acbio) <= 0)
1157                 {
1158                         BIO_printf(bio_err, "Error accepting connection\n");
1159                         ERR_print_errors(bio_err);
1160                         return 0;
1161                 }
1162
1163         cbio = BIO_pop(acbio);
1164         *pcbio = cbio;
1165
1166         for(;;)
1167                 {
1168                 len = BIO_gets(cbio, inbuf, sizeof inbuf);
1169                 if (len <= 0)
1170                         return 1;
1171                 /* Look for "POST" signalling start of query */
1172                 if (!have_post)
1173                         {
1174                         if(strncmp(inbuf, "POST", 4))
1175                                 {
1176                                 BIO_printf(bio_err, "Invalid request\n");
1177                                 return 1;
1178                                 }
1179                         have_post = 1;
1180                         }
1181                 /* Look for end of headers */
1182                 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1183                         break;
1184                 }
1185
1186         /* Try to read OCSP request */
1187
1188         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1189
1190         if (!req)
1191                 {
1192                 BIO_printf(bio_err, "Error parsing OCSP request\n");
1193                 ERR_print_errors(bio_err);
1194                 }
1195
1196         *preq = req;
1197
1198         return 1;
1199
1200         }
1201
1202 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1203         {
1204         char http_resp[] = 
1205                 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1206                 "Content-Length: %d\r\n\r\n";
1207         if (!cbio)
1208                 return 0;
1209         BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1210         i2d_OCSP_RESPONSE_bio(cbio, resp);
1211         (void)BIO_flush(cbio);
1212         return 1;
1213         }
1214
1215 static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path,
1216                                 OCSP_REQUEST *req, int req_timeout)
1217         {
1218         int fd;
1219         int rv;
1220         OCSP_REQ_CTX *ctx = NULL;
1221         OCSP_RESPONSE *rsp = NULL;
1222         fd_set confds;
1223         struct timeval tv;
1224
1225         if (req_timeout != -1)
1226                 BIO_set_nbio(cbio, 1);
1227
1228         rv = BIO_do_connect(cbio);
1229
1230         if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio)))
1231                 {
1232                 BIO_puts(err, "Error connecting BIO\n");
1233                 return NULL;
1234                 }
1235
1236         if (req_timeout == -1)
1237                 return OCSP_sendreq_bio(cbio, path, req);
1238
1239         if (BIO_get_fd(cbio, &fd) <= 0)
1240                 {
1241                 BIO_puts(err, "Can't get connection fd\n");
1242                 goto err;
1243                 }
1244
1245         if (rv <= 0)
1246                 {
1247                 FD_ZERO(&confds);
1248                 openssl_fdset(fd, &confds);
1249                 tv.tv_usec = 0;
1250                 tv.tv_sec = req_timeout;
1251                 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1252                 if (rv == 0)
1253                         {
1254                         BIO_puts(err, "Timeout on connect\n");
1255                         return NULL;
1256                         }
1257                 }
1258
1259
1260         ctx = OCSP_sendreq_new(cbio, path, req, -1);
1261         if (!ctx)
1262                 return NULL;
1263         
1264         for (;;)
1265                 {
1266                 rv = OCSP_sendreq_nbio(&rsp, ctx);
1267                 if (rv != -1)
1268                         break;
1269                 FD_ZERO(&confds);
1270                 openssl_fdset(fd, &confds);
1271                 tv.tv_usec = 0;
1272                 tv.tv_sec = req_timeout;
1273                 if (BIO_should_read(cbio))
1274                         rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1275                 else if (BIO_should_write(cbio))
1276                         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1277                 else
1278                         {
1279                         BIO_puts(err, "Unexpected retry condition\n");
1280                         goto err;
1281                         }
1282                 if (rv == 0)
1283                         {
1284                         BIO_puts(err, "Timeout on request\n");
1285                         break;
1286                         }
1287                 if (rv == -1)
1288                         {
1289                         BIO_puts(err, "Select error\n");
1290                         break;
1291                         }
1292                         
1293                 }
1294         err:
1295         if (ctx)
1296                 OCSP_REQ_CTX_free(ctx);
1297
1298         return rsp;
1299         }
1300
1301 OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req,
1302                         char *host, char *path, char *port, int use_ssl,
1303                         int req_timeout)
1304         {
1305         BIO *cbio = NULL;
1306         SSL_CTX *ctx = NULL;
1307         OCSP_RESPONSE *resp = NULL;
1308         cbio = BIO_new_connect(host);
1309         if (!cbio)
1310                 {
1311                 BIO_printf(err, "Error creating connect BIO\n");
1312                 goto end;
1313                 }
1314         if (port) BIO_set_conn_port(cbio, port);
1315         if (use_ssl == 1)
1316                 {
1317                 BIO *sbio;
1318 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
1319                 ctx = SSL_CTX_new(SSLv23_client_method());
1320 #elif !defined(OPENSSL_NO_SSL3)
1321                 ctx = SSL_CTX_new(SSLv3_client_method());
1322 #elif !defined(OPENSSL_NO_SSL2)
1323                 ctx = SSL_CTX_new(SSLv2_client_method());
1324 #else
1325                 BIO_printf(err, "SSL is disabled\n");
1326                         goto end;
1327 #endif
1328                 if (ctx == NULL)
1329                         {
1330                         BIO_printf(err, "Error creating SSL context.\n");
1331                         goto end;
1332                         }
1333                 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1334                 sbio = BIO_new_ssl(ctx, 1);
1335                 cbio = BIO_push(sbio, cbio);
1336                 }
1337         resp = query_responder(err, cbio, path, req, req_timeout);
1338         if (!resp)
1339                 BIO_printf(bio_err, "Error querying OCSP responsder\n");
1340         end:
1341         if (ctx)
1342                 SSL_CTX_free(ctx);
1343         if (cbio)
1344                 BIO_free_all(cbio);
1345         return resp;
1346         }
1347
1348 #endif