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1.15 ! jsing 1: /* $OpenBSD: ocsp.c,v 1.14 2018/02/07 05:47:55 jsing Exp $ */
1.1 jsing 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:
1.2 deraadt 60: #include <sys/types.h>
1.1 jsing 61:
62: #include <stdio.h>
63: #include <stdlib.h>
64: #include <limits.h>
65: #include <string.h>
1.2 deraadt 66: #include <poll.h>
1.1 jsing 67: #include <time.h>
68:
69: /* Needs to be included before the openssl headers! */
70: #include "apps.h"
71:
72: #include <openssl/bn.h>
73: #include <openssl/crypto.h>
74: #include <openssl/err.h>
75: #include <openssl/evp.h>
76: #include <openssl/ssl.h>
77: #include <openssl/x509v3.h>
78:
79: /* Maximum leeway in validity period: default 5 minutes */
80: #define MAX_VALIDITY_PERIOD (5 * 60)
81:
82: static int
83: add_ocsp_cert(OCSP_REQUEST ** req, X509 * cert, const EVP_MD * cert_id_md, X509 * issuer,
84: STACK_OF(OCSP_CERTID) * ids);
85: static int add_ocsp_serial(OCSP_REQUEST ** req, char *serial, const EVP_MD * cert_id_md, X509 * issuer,
86: STACK_OF(OCSP_CERTID) * ids);
87: static int print_ocsp_summary(BIO * out, OCSP_BASICRESP * bs, OCSP_REQUEST * req,
88: STACK_OF(OPENSSL_STRING) * names,
89: STACK_OF(OCSP_CERTID) * ids, long nsec,
90: long maxage);
91:
92: static int make_ocsp_response(OCSP_RESPONSE ** resp, OCSP_REQUEST * req, CA_DB * db,
93: X509 * ca, X509 * rcert, EVP_PKEY * rkey,
94: STACK_OF(X509) * rother, unsigned long flags,
95: int nmin, int ndays);
96:
97: static char **lookup_serial(CA_DB * db, ASN1_INTEGER * ser);
98: static BIO *init_responder(char *port);
99: static int do_responder(OCSP_REQUEST ** preq, BIO ** pcbio, BIO * acbio, char *port);
100: static int send_ocsp_response(BIO * cbio, OCSP_RESPONSE * resp);
101: static OCSP_RESPONSE *query_responder(BIO * err, BIO * cbio, char *path,
102: STACK_OF(CONF_VALUE) * headers,
103: OCSP_REQUEST * req, int req_timeout);
104:
105: int
106: ocsp_main(int argc, char **argv)
107: {
108: char **args;
1.13 guenther 109: char *host = NULL, *port = NULL, *path = NULL;
1.1 jsing 110: char *reqin = NULL, *respin = NULL;
111: char *reqout = NULL, *respout = NULL;
112: char *signfile = NULL, *keyfile = NULL;
113: char *rsignfile = NULL, *rkeyfile = NULL;
114: char *outfile = NULL;
115: int add_nonce = 1, noverify = 0, use_ssl = -1;
116: STACK_OF(CONF_VALUE) * headers = NULL;
117: OCSP_REQUEST *req = NULL;
118: OCSP_RESPONSE *resp = NULL;
119: OCSP_BASICRESP *bs = NULL;
120: X509 *issuer = NULL, *cert = NULL;
121: X509 *signer = NULL, *rsigner = NULL;
122: EVP_PKEY *key = NULL, *rkey = NULL;
123: BIO *acbio = NULL, *cbio = NULL;
124: BIO *derbio = NULL;
125: BIO *out = NULL;
126: int req_timeout = -1;
127: int req_text = 0, resp_text = 0;
128: long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
129: char *CAfile = NULL, *CApath = NULL;
130: X509_STORE *store = NULL;
131: STACK_OF(X509) * sign_other = NULL, *verify_other = NULL, *rother = NULL;
132: char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
133: unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
134: int ret = 1;
135: int accept_count = -1;
136: int badarg = 0;
137: int i;
138: int ignore_err = 0;
139: STACK_OF(OPENSSL_STRING) * reqnames = NULL;
140: STACK_OF(OCSP_CERTID) * ids = NULL;
141: X509 *rca_cert = NULL;
142: char *ridx_filename = NULL;
143: char *rca_filename = NULL;
144: CA_DB *rdb = NULL;
145: int nmin = 0, ndays = -1;
146: const EVP_MD *cert_id_md = NULL;
147: const char *errstr = NULL;
1.6 doug 148:
149: if (single_execution) {
1.11 deraadt 150: if (pledge("stdio cpath wpath rpath inet dns tty", NULL) == -1) {
1.6 doug 151: perror("pledge");
1.7 doug 152: exit(1);
153: }
1.6 doug 154: }
1.1 jsing 155:
156: args = argv + 1;
157: reqnames = sk_OPENSSL_STRING_new_null();
158: ids = sk_OCSP_CERTID_new_null();
159: while (!badarg && *args && *args[0] == '-') {
160: if (!strcmp(*args, "-out")) {
161: if (args[1]) {
162: args++;
163: outfile = *args;
164: } else
165: badarg = 1;
166: } else if (!strcmp(*args, "-timeout")) {
167: if (args[1]) {
168: args++;
169: req_timeout = strtonum(*args, 0,
170: INT_MAX, &errstr);
171: if (errstr) {
172: BIO_printf(bio_err,
173: "Illegal timeout value %s: %s\n",
174: *args, errstr);
175: badarg = 1;
176: }
177: } else
178: badarg = 1;
179: } else if (!strcmp(*args, "-url")) {
1.13 guenther 180: if (args[1] && host == NULL && port == NULL &&
181: path == NULL) {
1.1 jsing 182: args++;
183: if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) {
184: BIO_printf(bio_err, "Error parsing URL\n");
185: badarg = 1;
186: }
187: } else
188: badarg = 1;
189: } else if (!strcmp(*args, "-host")) {
1.13 guenther 190: if (args[1] && use_ssl == -1) {
1.1 jsing 191: args++;
192: host = *args;
193: } else
194: badarg = 1;
195: } else if (!strcmp(*args, "-port")) {
1.13 guenther 196: if (args[1] && use_ssl == -1) {
1.1 jsing 197: args++;
198: port = *args;
199: } else
200: badarg = 1;
201: } else if (!strcmp(*args, "-header")) {
202: if (args[1] && args[2]) {
203: if (!X509V3_add_value(args[1], args[2], &headers))
204: goto end;
205: args += 2;
206: } else
207: badarg = 1;
208: } else if (!strcmp(*args, "-ignore_err"))
209: ignore_err = 1;
210: else if (!strcmp(*args, "-noverify"))
211: noverify = 1;
212: else if (!strcmp(*args, "-nonce"))
213: add_nonce = 2;
214: else if (!strcmp(*args, "-no_nonce"))
215: add_nonce = 0;
216: else if (!strcmp(*args, "-resp_no_certs"))
217: rflags |= OCSP_NOCERTS;
218: else if (!strcmp(*args, "-resp_key_id"))
219: rflags |= OCSP_RESPID_KEY;
220: else if (!strcmp(*args, "-no_certs"))
221: sign_flags |= OCSP_NOCERTS;
222: else if (!strcmp(*args, "-no_signature_verify"))
223: verify_flags |= OCSP_NOSIGS;
224: else if (!strcmp(*args, "-no_cert_verify"))
225: verify_flags |= OCSP_NOVERIFY;
226: else if (!strcmp(*args, "-no_chain"))
227: verify_flags |= OCSP_NOCHAIN;
228: else if (!strcmp(*args, "-no_cert_checks"))
229: verify_flags |= OCSP_NOCHECKS;
230: else if (!strcmp(*args, "-no_explicit"))
231: verify_flags |= OCSP_NOEXPLICIT;
232: else if (!strcmp(*args, "-trust_other"))
233: verify_flags |= OCSP_TRUSTOTHER;
234: else if (!strcmp(*args, "-no_intern"))
235: verify_flags |= OCSP_NOINTERN;
236: else if (!strcmp(*args, "-text")) {
237: req_text = 1;
238: resp_text = 1;
239: } else if (!strcmp(*args, "-req_text"))
240: req_text = 1;
241: else if (!strcmp(*args, "-resp_text"))
242: resp_text = 1;
243: else if (!strcmp(*args, "-reqin")) {
244: if (args[1]) {
245: args++;
246: reqin = *args;
247: } else
248: badarg = 1;
249: } else if (!strcmp(*args, "-respin")) {
250: if (args[1]) {
251: args++;
252: respin = *args;
253: } else
254: badarg = 1;
255: } else if (!strcmp(*args, "-signer")) {
256: if (args[1]) {
257: args++;
258: signfile = *args;
259: } else
260: badarg = 1;
261: } else if (!strcmp(*args, "-VAfile")) {
262: if (args[1]) {
263: args++;
264: verify_certfile = *args;
265: verify_flags |= OCSP_TRUSTOTHER;
266: } else
267: badarg = 1;
268: } else if (!strcmp(*args, "-sign_other")) {
269: if (args[1]) {
270: args++;
271: sign_certfile = *args;
272: } else
273: badarg = 1;
274: } else if (!strcmp(*args, "-verify_other")) {
275: if (args[1]) {
276: args++;
277: verify_certfile = *args;
278: } else
279: badarg = 1;
280: } else if (!strcmp(*args, "-CAfile")) {
281: if (args[1]) {
282: args++;
283: CAfile = *args;
284: } else
285: badarg = 1;
286: } else if (!strcmp(*args, "-CApath")) {
287: if (args[1]) {
288: args++;
289: CApath = *args;
290: } else
291: badarg = 1;
292: } else if (!strcmp(*args, "-validity_period")) {
293: if (args[1]) {
294: args++;
295: nsec = strtonum(*args, 0, LONG_MAX, &errstr);
296: if (errstr) {
297: BIO_printf(bio_err,
298: "Illegal validity period %s: %s\n",
299: *args, errstr);
300: badarg = 1;
301: }
302: } else
303: badarg = 1;
304: } else if (!strcmp(*args, "-status_age")) {
305: if (args[1]) {
306: args++;
307: maxage = strtonum(*args, 0, LONG_MAX, &errstr);
308: if (errstr) {
309: BIO_printf(bio_err,
310: "Illegal validity age %s: %s\n",
311: *args, errstr);
312: badarg = 1;
313: }
314: } else
315: badarg = 1;
316: } else if (!strcmp(*args, "-signkey")) {
317: if (args[1]) {
318: args++;
319: keyfile = *args;
320: } else
321: badarg = 1;
322: } else if (!strcmp(*args, "-reqout")) {
323: if (args[1]) {
324: args++;
325: reqout = *args;
326: } else
327: badarg = 1;
328: } else if (!strcmp(*args, "-respout")) {
329: if (args[1]) {
330: args++;
331: respout = *args;
332: } else
333: badarg = 1;
334: } else if (!strcmp(*args, "-path")) {
1.13 guenther 335: if (args[1] && use_ssl == -1) {
1.1 jsing 336: args++;
337: path = *args;
338: } else
339: badarg = 1;
340: } else if (!strcmp(*args, "-issuer")) {
341: if (args[1]) {
342: args++;
343: X509_free(issuer);
344: issuer = load_cert(bio_err, *args, FORMAT_PEM,
1.4 bcook 345: NULL, "issuer certificate");
1.1 jsing 346: if (!issuer)
347: goto end;
348: } else
349: badarg = 1;
350: } else if (!strcmp(*args, "-cert")) {
351: if (args[1]) {
352: args++;
353: X509_free(cert);
354: cert = load_cert(bio_err, *args, FORMAT_PEM,
1.4 bcook 355: NULL, "certificate");
1.1 jsing 356: if (!cert)
357: goto end;
358: if (!cert_id_md)
359: cert_id_md = EVP_sha1();
360: if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
361: goto end;
362: if (!sk_OPENSSL_STRING_push(reqnames, *args))
363: goto end;
364: } else
365: badarg = 1;
366: } else if (!strcmp(*args, "-serial")) {
367: if (args[1]) {
368: args++;
369: if (!cert_id_md)
370: cert_id_md = EVP_sha1();
371: if (!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
372: goto end;
373: if (!sk_OPENSSL_STRING_push(reqnames, *args))
374: goto end;
375: } else
376: badarg = 1;
377: } else if (!strcmp(*args, "-index")) {
378: if (args[1]) {
379: args++;
380: ridx_filename = *args;
381: } else
382: badarg = 1;
383: } else if (!strcmp(*args, "-CA")) {
384: if (args[1]) {
385: args++;
386: rca_filename = *args;
387: } else
388: badarg = 1;
389: } else if (!strcmp(*args, "-nmin")) {
390: if (args[1]) {
391: args++;
392: nmin = strtonum(*args, 0, INT_MAX, &errstr);
393: if (errstr) {
394: BIO_printf(bio_err,
395: "Illegal update period %s: %s\n",
396: *args, errstr);
397: badarg = 1;
398: }
399: }
400: if (ndays == -1)
401: ndays = 0;
402: else
403: badarg = 1;
404: } else if (!strcmp(*args, "-nrequest")) {
405: if (args[1]) {
406: args++;
407: accept_count = strtonum(*args, 0, INT_MAX, &errstr);
408: if (errstr) {
409: BIO_printf(bio_err,
410: "Illegal accept count %s: %s\n",
411: *args, errstr);
412: badarg = 1;
413: }
414: } else
415: badarg = 1;
416: } else if (!strcmp(*args, "-ndays")) {
417: if (args[1]) {
418: args++;
419: ndays = strtonum(*args, 0, INT_MAX, &errstr);
420: if (errstr) {
421: BIO_printf(bio_err,
422: "Illegal update period %s: %s\n",
423: *args, errstr);
424: badarg = 1;
425: }
426: } else
427: badarg = 1;
428: } else if (!strcmp(*args, "-rsigner")) {
429: if (args[1]) {
430: args++;
431: rsignfile = *args;
432: } else
433: badarg = 1;
434: } else if (!strcmp(*args, "-rkey")) {
435: if (args[1]) {
436: args++;
437: rkeyfile = *args;
438: } else
439: badarg = 1;
440: } else if (!strcmp(*args, "-rother")) {
441: if (args[1]) {
442: args++;
443: rcertfile = *args;
444: } else
445: badarg = 1;
446: } else if ((cert_id_md = EVP_get_digestbyname((*args) + 1)) == NULL) {
447: badarg = 1;
448: }
449: args++;
450: }
451:
452: /* Have we anything to do? */
453: if (!req && !reqin && !respin && !(port && ridx_filename))
454: badarg = 1;
455:
456: if (badarg) {
457: BIO_printf(bio_err, "OCSP utility\n");
458: BIO_printf(bio_err, "Usage ocsp [options]\n");
459: BIO_printf(bio_err, "where options are\n");
460: BIO_printf(bio_err, "-out file output filename\n");
461: BIO_printf(bio_err, "-issuer file issuer certificate\n");
462: BIO_printf(bio_err, "-cert file certificate to check\n");
463: BIO_printf(bio_err, "-serial n serial number to check\n");
464: BIO_printf(bio_err, "-signer file certificate to sign OCSP request with\n");
465: BIO_printf(bio_err, "-signkey file private key to sign OCSP request with\n");
466: BIO_printf(bio_err, "-sign_other file additional certificates to include in signed request\n");
467: BIO_printf(bio_err, "-no_certs don't include any certificates in signed request\n");
468: BIO_printf(bio_err, "-req_text print text form of request\n");
469: BIO_printf(bio_err, "-resp_text print text form of response\n");
470: BIO_printf(bio_err, "-text print text form of request and response\n");
471: BIO_printf(bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n");
472: BIO_printf(bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
473: BIO_printf(bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n");
474: BIO_printf(bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n");
475: BIO_printf(bio_err, "-nonce add OCSP nonce to request\n");
476: BIO_printf(bio_err, "-no_nonce don't add OCSP nonce to request\n");
477: BIO_printf(bio_err, "-url URL OCSP responder URL\n");
478: BIO_printf(bio_err, "-host host:n send OCSP request to host on port n\n");
479: BIO_printf(bio_err, "-path path to use in OCSP request\n");
480: BIO_printf(bio_err, "-CApath dir trusted certificates directory\n");
481: BIO_printf(bio_err, "-CAfile file trusted certificates file\n");
482: BIO_printf(bio_err, "-VAfile file validator certificates file\n");
483: BIO_printf(bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
484: BIO_printf(bio_err, "-status_age n maximum status age in seconds\n");
485: BIO_printf(bio_err, "-noverify don't verify response at all\n");
486: BIO_printf(bio_err, "-verify_other file additional certificates to search for signer\n");
487: BIO_printf(bio_err, "-trust_other don't verify additional certificates\n");
488: BIO_printf(bio_err, "-no_intern don't search certificates contained in response for signer\n");
489: BIO_printf(bio_err, "-no_signature_verify don't check signature on response\n");
490: BIO_printf(bio_err, "-no_cert_verify don't check signing certificate\n");
491: BIO_printf(bio_err, "-no_chain don't chain verify response\n");
492: BIO_printf(bio_err, "-no_cert_checks don't do additional checks on signing certificate\n");
493: BIO_printf(bio_err, "-port num port to run responder on\n");
494: BIO_printf(bio_err, "-index file certificate status index file\n");
495: BIO_printf(bio_err, "-CA file CA certificate\n");
496: BIO_printf(bio_err, "-rsigner file responder certificate to sign responses with\n");
497: BIO_printf(bio_err, "-rkey file responder key to sign responses with\n");
498: BIO_printf(bio_err, "-rother file other certificates to include in response\n");
499: BIO_printf(bio_err, "-resp_no_certs don't include any certificates in response\n");
1.12 deraadt 500: BIO_printf(bio_err, "-nmin n number of minutes before next update\n");
501: BIO_printf(bio_err, "-ndays n number of days before next update\n");
1.1 jsing 502: BIO_printf(bio_err, "-resp_key_id identify reponse by signing certificate key ID\n");
503: BIO_printf(bio_err, "-nrequest n number of requests to accept (default unlimited)\n");
504: BIO_printf(bio_err, "-<dgst alg> use specified digest in the request\n");
505: goto end;
506: }
507: if (outfile)
508: out = BIO_new_file(outfile, "w");
509: else
510: out = BIO_new_fp(stdout, BIO_NOCLOSE);
511:
512: if (!out) {
513: BIO_printf(bio_err, "Error opening output file\n");
514: goto end;
515: }
516: if (!req && (add_nonce != 2))
517: add_nonce = 0;
518:
519: if (!req && reqin) {
520: derbio = BIO_new_file(reqin, "rb");
521: if (!derbio) {
522: BIO_printf(bio_err, "Error Opening OCSP request file\n");
523: goto end;
524: }
525: req = d2i_OCSP_REQUEST_bio(derbio, NULL);
526: BIO_free(derbio);
527: if (!req) {
528: BIO_printf(bio_err, "Error reading OCSP request\n");
529: goto end;
530: }
531: }
532: if (!req && port) {
533: acbio = init_responder(port);
534: if (!acbio)
535: goto end;
536: }
537: if (rsignfile && !rdb) {
538: if (!rkeyfile)
539: rkeyfile = rsignfile;
540: rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
1.4 bcook 541: NULL, "responder certificate");
1.1 jsing 542: if (!rsigner) {
543: BIO_printf(bio_err, "Error loading responder certificate\n");
544: goto end;
545: }
546: rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
1.4 bcook 547: NULL, "CA certificate");
1.1 jsing 548: if (rcertfile) {
549: rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
1.4 bcook 550: NULL, "responder other certificates");
1.1 jsing 551: if (!rother)
552: goto end;
553: }
1.4 bcook 554: rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL,
1.1 jsing 555: "responder private key");
556: if (!rkey)
557: goto end;
558: }
559: if (acbio)
560: BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
561:
562: redo_accept:
563:
564: if (acbio) {
565: if (!do_responder(&req, &cbio, acbio, port))
566: goto end;
567: if (!req) {
568: resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
569: send_ocsp_response(cbio, resp);
570: goto done_resp;
571: }
572: }
573: if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) {
574: BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
575: goto end;
576: }
577: if (req && add_nonce)
578: OCSP_request_add1_nonce(req, NULL, -1);
579:
580: if (signfile) {
581: if (!keyfile)
582: keyfile = signfile;
583: signer = load_cert(bio_err, signfile, FORMAT_PEM,
1.4 bcook 584: NULL, "signer certificate");
1.1 jsing 585: if (!signer) {
586: BIO_printf(bio_err, "Error loading signer certificate\n");
587: goto end;
588: }
589: if (sign_certfile) {
590: sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
1.4 bcook 591: NULL, "signer certificates");
1.1 jsing 592: if (!sign_other)
593: goto end;
594: }
1.4 bcook 595: key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL,
1.1 jsing 596: "signer private key");
597: if (!key)
598: goto end;
599:
600: if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags)) {
601: BIO_printf(bio_err, "Error signing OCSP request\n");
602: goto end;
603: }
604: }
605: if (req_text && req)
606: OCSP_REQUEST_print(out, req, 0);
607:
608: if (reqout) {
609: derbio = BIO_new_file(reqout, "wb");
610: if (!derbio) {
611: BIO_printf(bio_err, "Error opening file %s\n", reqout);
612: goto end;
613: }
614: i2d_OCSP_REQUEST_bio(derbio, req);
615: BIO_free(derbio);
616: }
617: if (ridx_filename && (!rkey || !rsigner || !rca_cert)) {
618: BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
619: goto end;
620: }
621: if (ridx_filename && !rdb) {
622: rdb = load_index(ridx_filename, NULL);
623: if (!rdb)
624: goto end;
625: if (!index_index(rdb))
626: goto end;
627: }
628: if (rdb) {
629: i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
630: if (cbio)
631: send_ocsp_response(cbio, resp);
632: } else if (host) {
1.13 guenther 633: resp = process_responder(bio_err, req, host, path ? path : "/",
1.1 jsing 634: port, use_ssl, headers, req_timeout);
635: if (!resp)
636: goto end;
637: } else if (respin) {
638: derbio = BIO_new_file(respin, "rb");
639: if (!derbio) {
640: BIO_printf(bio_err, "Error Opening OCSP response file\n");
641: goto end;
642: }
643: resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
644: BIO_free(derbio);
645: if (!resp) {
646: BIO_printf(bio_err, "Error reading OCSP response\n");
647: goto end;
648: }
649: } else {
650: ret = 0;
651: goto end;
652: }
653:
654: done_resp:
655:
656: if (respout) {
657: derbio = BIO_new_file(respout, "wb");
658: if (!derbio) {
659: BIO_printf(bio_err, "Error opening file %s\n", respout);
660: goto end;
661: }
662: i2d_OCSP_RESPONSE_bio(derbio, resp);
663: BIO_free(derbio);
664: }
665: i = OCSP_response_status(resp);
666:
667: if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
1.9 beck 668: BIO_printf(bio_err, "Responder Error: %s (%d)\n",
1.1 jsing 669: OCSP_response_status_str(i), i);
670: if (ignore_err)
671: goto redo_accept;
1.9 beck 672: ret = 1;
1.1 jsing 673: goto end;
674: }
675: if (resp_text)
676: OCSP_RESPONSE_print(out, resp, 0);
677:
678: /* If running as responder don't verify our own response */
679: if (cbio) {
680: if (accept_count > 0)
681: accept_count--;
682: /* Redo if more connections needed */
683: if (accept_count) {
684: BIO_free_all(cbio);
685: cbio = NULL;
686: OCSP_REQUEST_free(req);
687: req = NULL;
688: OCSP_RESPONSE_free(resp);
689: resp = NULL;
690: goto redo_accept;
691: }
692: goto end;
693: }
694: if (!store)
695: store = setup_verify(bio_err, CAfile, CApath);
696: if (!store)
697: goto end;
698: if (verify_certfile) {
699: verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
1.4 bcook 700: NULL, "validator certificate");
1.1 jsing 701: if (!verify_other)
702: goto end;
703: }
704: bs = OCSP_response_get1_basic(resp);
705:
706: if (!bs) {
707: BIO_printf(bio_err, "Error parsing response\n");
708: goto end;
709: }
710: if (!noverify) {
711: if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
712: if (i == -1)
713: BIO_printf(bio_err, "WARNING: no nonce in response\n");
714: else {
715: BIO_printf(bio_err, "Nonce Verify error\n");
716: goto end;
717: }
718: }
719: i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
720: if (i < 0)
721: i = OCSP_basic_verify(bs, NULL, store, 0);
722:
723: if (i <= 0) {
724: BIO_printf(bio_err, "Response Verify Failure\n");
725: ERR_print_errors(bio_err);
726: } else
727: BIO_printf(bio_err, "Response verify OK\n");
728:
729: }
730: if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
731: goto end;
732:
733: ret = 0;
734:
1.14 jsing 735: end:
1.1 jsing 736: ERR_print_errors(bio_err);
737: X509_free(signer);
738: X509_STORE_free(store);
739: EVP_PKEY_free(key);
740: EVP_PKEY_free(rkey);
741: X509_free(issuer);
742: X509_free(cert);
743: X509_free(rsigner);
744: X509_free(rca_cert);
745: free_index(rdb);
746: BIO_free_all(cbio);
747: BIO_free_all(acbio);
748: BIO_free(out);
749: OCSP_REQUEST_free(req);
750: OCSP_RESPONSE_free(resp);
751: OCSP_BASICRESP_free(bs);
752: sk_OPENSSL_STRING_free(reqnames);
753: sk_OCSP_CERTID_free(ids);
754: sk_X509_pop_free(sign_other, X509_free);
755: sk_X509_pop_free(verify_other, X509_free);
756: sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
757:
758: if (use_ssl != -1) {
759: free(host);
760: free(port);
761: free(path);
762: }
763: return (ret);
764: }
765:
766: static int
767: add_ocsp_cert(OCSP_REQUEST ** req, X509 * cert, const EVP_MD * cert_id_md, X509 * issuer,
768: STACK_OF(OCSP_CERTID) * ids)
769: {
770: OCSP_CERTID *id;
771: if (!issuer) {
772: BIO_printf(bio_err, "No issuer certificate specified\n");
773: return 0;
774: }
775: if (!*req)
776: *req = OCSP_REQUEST_new();
777: if (!*req)
778: goto err;
779: id = OCSP_cert_to_id(cert_id_md, cert, issuer);
780: if (!id || !sk_OCSP_CERTID_push(ids, id))
781: goto err;
782: if (!OCSP_request_add0_id(*req, id))
783: goto err;
784: return 1;
785:
1.14 jsing 786: err:
1.1 jsing 787: BIO_printf(bio_err, "Error Creating OCSP request\n");
788: return 0;
789: }
790:
791: static int
792: add_ocsp_serial(OCSP_REQUEST ** req, char *serial, const EVP_MD * cert_id_md, X509 * issuer,
793: STACK_OF(OCSP_CERTID) * ids)
794: {
795: OCSP_CERTID *id;
796: X509_NAME *iname;
797: ASN1_BIT_STRING *ikey;
798: ASN1_INTEGER *sno;
799: if (!issuer) {
800: BIO_printf(bio_err, "No issuer certificate specified\n");
801: return 0;
802: }
803: if (!*req)
804: *req = OCSP_REQUEST_new();
805: if (!*req)
806: goto err;
807: iname = X509_get_subject_name(issuer);
808: ikey = X509_get0_pubkey_bitstr(issuer);
809: sno = s2i_ASN1_INTEGER(NULL, serial);
810: if (!sno) {
811: BIO_printf(bio_err, "Error converting serial number %s\n", serial);
812: return 0;
813: }
814: id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
815: ASN1_INTEGER_free(sno);
816: if (!id || !sk_OCSP_CERTID_push(ids, id))
817: goto err;
818: if (!OCSP_request_add0_id(*req, id))
819: goto err;
820: return 1;
821:
1.14 jsing 822: err:
1.1 jsing 823: BIO_printf(bio_err, "Error Creating OCSP request\n");
824: return 0;
825: }
826:
827: static int
828: print_ocsp_summary(BIO * out, OCSP_BASICRESP * bs, OCSP_REQUEST * req,
829: STACK_OF(OPENSSL_STRING) * names,
830: STACK_OF(OCSP_CERTID) * ids, long nsec,
831: long maxage)
832: {
833: OCSP_CERTID *id;
834: char *name;
835: int i;
836:
837: int status, reason;
838:
839: ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
840:
841: if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
842: return 1;
843:
844: for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
845: id = sk_OCSP_CERTID_value(ids, i);
846: name = sk_OPENSSL_STRING_value(names, i);
847: BIO_printf(out, "%s: ", name);
848:
849: if (!OCSP_resp_find_status(bs, id, &status, &reason,
850: &rev, &thisupd, &nextupd)) {
851: BIO_puts(out, "ERROR: No Status found.\n");
852: continue;
853: }
854: /*
855: * Check validity: if invalid write to output BIO so we know
856: * which response this refers to.
857: */
858: if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
859: BIO_puts(out, "WARNING: Status times invalid.\n");
860: ERR_print_errors(out);
861: }
862: BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
863:
864: BIO_puts(out, "\tThis Update: ");
865: ASN1_GENERALIZEDTIME_print(out, thisupd);
866: BIO_puts(out, "\n");
867:
868: if (nextupd) {
869: BIO_puts(out, "\tNext Update: ");
870: ASN1_GENERALIZEDTIME_print(out, nextupd);
871: BIO_puts(out, "\n");
872: }
873: if (status != V_OCSP_CERTSTATUS_REVOKED)
874: continue;
875:
876: if (reason != -1)
877: BIO_printf(out, "\tReason: %s\n",
878: OCSP_crl_reason_str(reason));
879:
880: BIO_puts(out, "\tRevocation Time: ");
881: ASN1_GENERALIZEDTIME_print(out, rev);
882: BIO_puts(out, "\n");
883: }
884:
885: return 1;
886: }
887:
888:
889: static int
890: make_ocsp_response(OCSP_RESPONSE ** resp, OCSP_REQUEST * req, CA_DB * db,
891: X509 * ca, X509 * rcert, EVP_PKEY * rkey,
892: STACK_OF(X509) * rother, unsigned long flags,
893: int nmin, int ndays)
894: {
895: ASN1_TIME *thisupd = NULL, *nextupd = NULL;
896: OCSP_CERTID *cid, *ca_id = NULL;
897: OCSP_BASICRESP *bs = NULL;
898: int i, id_count, ret = 1;
899:
900: id_count = OCSP_request_onereq_count(req);
901:
902: if (id_count <= 0) {
903: *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
904: goto end;
905: }
906: bs = OCSP_BASICRESP_new();
907: thisupd = X509_gmtime_adj(NULL, 0);
908: if (ndays != -1)
909: nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24);
910:
911: /* Examine each certificate id in the request */
912: for (i = 0; i < id_count; i++) {
913: OCSP_ONEREQ *one;
914: ASN1_INTEGER *serial;
915: char **inf;
916: ASN1_OBJECT *cert_id_md_oid;
917: const EVP_MD *cert_id_md;
918: one = OCSP_request_onereq_get0(req, i);
919: cid = OCSP_onereq_get0_id(one);
920:
921: OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
922:
923: cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
924: if (!cert_id_md) {
925: *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
926: NULL);
927: goto end;
928: }
1.15 ! jsing 929: OCSP_CERTID_free(ca_id);
1.1 jsing 930: ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
931:
932: /* Is this request about our CA? */
933: if (OCSP_id_issuer_cmp(ca_id, cid)) {
934: OCSP_basic_add1_status(bs, cid,
935: V_OCSP_CERTSTATUS_UNKNOWN,
936: 0, NULL,
937: thisupd, nextupd);
938: continue;
939: }
940: OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
941: inf = lookup_serial(db, serial);
942: if (!inf)
943: OCSP_basic_add1_status(bs, cid,
944: V_OCSP_CERTSTATUS_UNKNOWN,
945: 0, NULL,
946: thisupd, nextupd);
947: else if (inf[DB_type][0] == DB_TYPE_VAL)
948: OCSP_basic_add1_status(bs, cid,
949: V_OCSP_CERTSTATUS_GOOD,
950: 0, NULL,
951: thisupd, nextupd);
952: else if (inf[DB_type][0] == DB_TYPE_REV) {
953: ASN1_OBJECT *inst = NULL;
954: ASN1_TIME *revtm = NULL;
955: ASN1_GENERALIZEDTIME *invtm = NULL;
956: OCSP_SINGLERESP *single;
957: int reason = -1;
958: unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
959: single = OCSP_basic_add1_status(bs, cid,
960: V_OCSP_CERTSTATUS_REVOKED,
961: reason, revtm,
962: thisupd, nextupd);
963: if (invtm)
964: OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
965: else if (inst)
966: OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
967: ASN1_OBJECT_free(inst);
968: ASN1_TIME_free(revtm);
969: ASN1_GENERALIZEDTIME_free(invtm);
970: }
971: }
972:
973: OCSP_copy_nonce(bs, req);
974:
975: OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags);
976:
977: *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
978:
1.14 jsing 979: end:
1.1 jsing 980: ASN1_TIME_free(thisupd);
981: ASN1_TIME_free(nextupd);
982: OCSP_CERTID_free(ca_id);
983: OCSP_BASICRESP_free(bs);
984: return ret;
985:
986: }
987:
988: static char **
989: lookup_serial(CA_DB * db, ASN1_INTEGER * ser)
990: {
991: int i;
992: BIGNUM *bn = NULL;
993: char *itmp, *row[DB_NUMBER], **rrow;
994: for (i = 0; i < DB_NUMBER; i++)
995: row[i] = NULL;
996: bn = ASN1_INTEGER_to_BN(ser, NULL);
997: OPENSSL_assert(bn); /* FIXME: should report an error at this
998: * point and abort */
999: if (BN_is_zero(bn))
1000: itmp = strdup("00");
1001: else
1002: itmp = BN_bn2hex(bn);
1003: row[DB_serial] = itmp;
1004: BN_free(bn);
1005: rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1006: free(itmp);
1007: return rrow;
1008: }
1009:
1010: /* Quick and dirty OCSP server: read in and parse input request */
1011:
1012: static BIO *
1013: init_responder(char *port)
1014: {
1015: BIO *acbio = NULL, *bufbio = NULL;
1016: bufbio = BIO_new(BIO_f_buffer());
1017: if (!bufbio)
1018: goto err;
1019: acbio = BIO_new_accept(port);
1020: if (!acbio)
1021: goto err;
1022: BIO_set_accept_bios(acbio, bufbio);
1023: bufbio = NULL;
1024:
1025: if (BIO_do_accept(acbio) <= 0) {
1026: BIO_printf(bio_err, "Error setting up accept BIO\n");
1027: ERR_print_errors(bio_err);
1028: goto err;
1029: }
1030: return acbio;
1031:
1.14 jsing 1032: err:
1.1 jsing 1033: BIO_free_all(acbio);
1034: BIO_free(bufbio);
1035: return NULL;
1036: }
1037:
1038: static int
1039: do_responder(OCSP_REQUEST ** preq, BIO ** pcbio, BIO * acbio, char *port)
1040: {
1041: int have_post = 0, len;
1042: OCSP_REQUEST *req = NULL;
1043: char inbuf[1024];
1044: BIO *cbio = NULL;
1045:
1046: if (BIO_do_accept(acbio) <= 0) {
1047: BIO_printf(bio_err, "Error accepting connection\n");
1048: ERR_print_errors(bio_err);
1049: return 0;
1050: }
1051: cbio = BIO_pop(acbio);
1052: *pcbio = cbio;
1053:
1054: for (;;) {
1055: len = BIO_gets(cbio, inbuf, sizeof inbuf);
1056: if (len <= 0)
1057: return 1;
1058: /* Look for "POST" signalling start of query */
1059: if (!have_post) {
1060: if (strncmp(inbuf, "POST", 4)) {
1061: BIO_printf(bio_err, "Invalid request\n");
1062: return 1;
1063: }
1064: have_post = 1;
1065: }
1066: /* Look for end of headers */
1067: if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1068: break;
1069: }
1070:
1071: /* Try to read OCSP request */
1072:
1073: req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1074:
1075: if (!req) {
1076: BIO_printf(bio_err, "Error parsing OCSP request\n");
1077: ERR_print_errors(bio_err);
1078: }
1079: *preq = req;
1080:
1081: return 1;
1082:
1083: }
1084:
1085: static int
1086: send_ocsp_response(BIO * cbio, OCSP_RESPONSE * resp)
1087: {
1088: static const char http_resp[] =
1089: "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1090: "Content-Length: %d\r\n\r\n";
1091: if (!cbio)
1092: return 0;
1093: BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1094: i2d_OCSP_RESPONSE_bio(cbio, resp);
1095: (void) BIO_flush(cbio);
1096: return 1;
1097: }
1098:
1099: static OCSP_RESPONSE *
1100: query_responder(BIO * err, BIO * cbio, char *path,
1101: STACK_OF(CONF_VALUE) * headers,
1102: OCSP_REQUEST * req, int req_timeout)
1103: {
1104: int fd;
1105: int rv;
1106: int i;
1107: OCSP_REQ_CTX *ctx = NULL;
1108: OCSP_RESPONSE *rsp = NULL;
1.2 deraadt 1109: struct pollfd pfd[1];
1.1 jsing 1110:
1111: if (req_timeout != -1)
1112: BIO_set_nbio(cbio, 1);
1113:
1114: rv = BIO_do_connect(cbio);
1115:
1116: if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1117: BIO_puts(err, "Error connecting BIO\n");
1118: return NULL;
1119: }
1.5 deraadt 1120: if (BIO_get_fd(cbio, &fd) < 0) {
1.1 jsing 1121: BIO_puts(err, "Can't get connection fd\n");
1122: goto err;
1123: }
1124: if (req_timeout != -1 && rv <= 0) {
1.2 deraadt 1125: pfd[0].fd = fd;
1126: pfd[0].events = POLLOUT;
1127: rv = poll(pfd, 1, req_timeout * 1000);
1.1 jsing 1128: if (rv == 0) {
1129: BIO_puts(err, "Timeout on connect\n");
1130: return NULL;
1131: }
1.2 deraadt 1132: if (rv == -1) {
1133: BIO_puts(err, "Poll error\n");
1134: return NULL;
1135: }
1.1 jsing 1136: }
1137: ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1138: if (!ctx)
1139: return NULL;
1140:
1141: for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1142: CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1143: if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1144: goto err;
1145: }
1146:
1147: if (!OCSP_REQ_CTX_set1_req(ctx, req))
1148: goto err;
1149:
1150: for (;;) {
1151: rv = OCSP_sendreq_nbio(&rsp, ctx);
1152: if (rv != -1)
1153: break;
1154: if (req_timeout == -1)
1155: continue;
1.2 deraadt 1156: pfd[0].fd = fd;
1.1 jsing 1157: if (BIO_should_read(cbio))
1.2 deraadt 1158: pfd[0].events = POLLIN;
1.1 jsing 1159: else if (BIO_should_write(cbio))
1.2 deraadt 1160: pfd[0].events = POLLOUT;
1.1 jsing 1161: else {
1162: BIO_puts(err, "Unexpected retry condition\n");
1163: goto err;
1164: }
1.2 deraadt 1165: rv = poll(pfd, 1, req_timeout * 1000);
1.1 jsing 1166: if (rv == 0) {
1167: BIO_puts(err, "Timeout on request\n");
1168: break;
1169: }
1.2 deraadt 1170: if (rv == -1 || (pfd[0].revents & (POLLERR|POLLNVAL))) {
1171: BIO_puts(err, "Poll error\n");
1.1 jsing 1172: break;
1173: }
1174: }
1.14 jsing 1175: err:
1.15 ! jsing 1176: OCSP_REQ_CTX_free(ctx);
1.1 jsing 1177:
1178: return rsp;
1179: }
1180:
1181: OCSP_RESPONSE *
1182: process_responder(BIO * err, OCSP_REQUEST * req,
1183: char *host, char *path, char *port, int use_ssl,
1184: STACK_OF(CONF_VALUE) * headers,
1185: int req_timeout)
1186: {
1187: BIO *cbio = NULL;
1188: SSL_CTX *ctx = NULL;
1189: OCSP_RESPONSE *resp = NULL;
1190: cbio = BIO_new_connect(host);
1191: if (!cbio) {
1192: BIO_printf(err, "Error creating connect BIO\n");
1193: goto end;
1194: }
1195: if (port)
1196: BIO_set_conn_port(cbio, port);
1197: if (use_ssl == 1) {
1198: BIO *sbio;
1199: ctx = SSL_CTX_new(SSLv23_client_method());
1200: if (ctx == NULL) {
1201: BIO_printf(err, "Error creating SSL context.\n");
1202: goto end;
1203: }
1204: SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1205: sbio = BIO_new_ssl(ctx, 1);
1206: cbio = BIO_push(sbio, cbio);
1207: }
1208: resp = query_responder(err, cbio, path, headers, req, req_timeout);
1209: if (!resp)
1210: BIO_printf(bio_err, "Error querying OCSP responder\n");
1.14 jsing 1211: end:
1.15 ! jsing 1212: BIO_free_all(cbio);
! 1213: SSL_CTX_free(ctx);
1.1 jsing 1214: return resp;
1215: }
1216:
1217: #endif