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1.8 ! semarie 1: /* $OpenBSD: ocsp.c,v 1.7 2015/10/17 15:00:11 doug 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;
109: char *host = NULL, *port = NULL, *path = "/";
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) {
1.8 ! semarie 150: if (pledge("stdio inet dns rpath wpath cpath", 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")) {
180: if (args[1]) {
181: args++;
182: if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) {
183: BIO_printf(bio_err, "Error parsing URL\n");
184: badarg = 1;
185: }
186: } else
187: badarg = 1;
188: } else if (!strcmp(*args, "-host")) {
189: if (args[1]) {
190: args++;
191: host = *args;
192: } else
193: badarg = 1;
194: } else if (!strcmp(*args, "-port")) {
195: if (args[1]) {
196: args++;
197: port = *args;
198: } else
199: badarg = 1;
200: } else if (!strcmp(*args, "-header")) {
201: if (args[1] && args[2]) {
202: if (!X509V3_add_value(args[1], args[2], &headers))
203: goto end;
204: args += 2;
205: } else
206: badarg = 1;
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: req_text = 1;
237: resp_text = 1;
238: } else if (!strcmp(*args, "-req_text"))
239: req_text = 1;
240: else if (!strcmp(*args, "-resp_text"))
241: resp_text = 1;
242: else if (!strcmp(*args, "-reqin")) {
243: if (args[1]) {
244: args++;
245: reqin = *args;
246: } else
247: badarg = 1;
248: } else if (!strcmp(*args, "-respin")) {
249: if (args[1]) {
250: args++;
251: respin = *args;
252: } else
253: badarg = 1;
254: } else if (!strcmp(*args, "-signer")) {
255: if (args[1]) {
256: args++;
257: signfile = *args;
258: } else
259: badarg = 1;
260: } else if (!strcmp(*args, "-VAfile")) {
261: if (args[1]) {
262: args++;
263: verify_certfile = *args;
264: verify_flags |= OCSP_TRUSTOTHER;
265: } else
266: badarg = 1;
267: } else if (!strcmp(*args, "-sign_other")) {
268: if (args[1]) {
269: args++;
270: sign_certfile = *args;
271: } else
272: badarg = 1;
273: } else if (!strcmp(*args, "-verify_other")) {
274: if (args[1]) {
275: args++;
276: verify_certfile = *args;
277: } else
278: badarg = 1;
279: } else if (!strcmp(*args, "-CAfile")) {
280: if (args[1]) {
281: args++;
282: CAfile = *args;
283: } else
284: badarg = 1;
285: } else if (!strcmp(*args, "-CApath")) {
286: if (args[1]) {
287: args++;
288: CApath = *args;
289: } else
290: badarg = 1;
291: } else if (!strcmp(*args, "-validity_period")) {
292: if (args[1]) {
293: args++;
294: nsec = strtonum(*args, 0, LONG_MAX, &errstr);
295: if (errstr) {
296: BIO_printf(bio_err,
297: "Illegal validity period %s: %s\n",
298: *args, errstr);
299: badarg = 1;
300: }
301: } else
302: badarg = 1;
303: } else if (!strcmp(*args, "-status_age")) {
304: if (args[1]) {
305: args++;
306: maxage = strtonum(*args, 0, LONG_MAX, &errstr);
307: if (errstr) {
308: BIO_printf(bio_err,
309: "Illegal validity age %s: %s\n",
310: *args, errstr);
311: badarg = 1;
312: }
313: } else
314: badarg = 1;
315: } else if (!strcmp(*args, "-signkey")) {
316: if (args[1]) {
317: args++;
318: keyfile = *args;
319: } else
320: badarg = 1;
321: } else if (!strcmp(*args, "-reqout")) {
322: if (args[1]) {
323: args++;
324: reqout = *args;
325: } else
326: badarg = 1;
327: } else if (!strcmp(*args, "-respout")) {
328: if (args[1]) {
329: args++;
330: respout = *args;
331: } else
332: badarg = 1;
333: } else if (!strcmp(*args, "-path")) {
334: if (args[1]) {
335: args++;
336: path = *args;
337: } else
338: badarg = 1;
339: } else if (!strcmp(*args, "-issuer")) {
340: if (args[1]) {
341: args++;
342: X509_free(issuer);
343: issuer = load_cert(bio_err, *args, FORMAT_PEM,
1.4 bcook 344: NULL, "issuer certificate");
1.1 jsing 345: if (!issuer)
346: goto end;
347: } else
348: badarg = 1;
349: } else if (!strcmp(*args, "-cert")) {
350: if (args[1]) {
351: args++;
352: X509_free(cert);
353: cert = load_cert(bio_err, *args, FORMAT_PEM,
1.4 bcook 354: NULL, "certificate");
1.1 jsing 355: if (!cert)
356: goto end;
357: if (!cert_id_md)
358: cert_id_md = EVP_sha1();
359: if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
360: goto end;
361: if (!sk_OPENSSL_STRING_push(reqnames, *args))
362: goto end;
363: } else
364: badarg = 1;
365: } else if (!strcmp(*args, "-serial")) {
366: if (args[1]) {
367: args++;
368: if (!cert_id_md)
369: cert_id_md = EVP_sha1();
370: if (!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
371: goto end;
372: if (!sk_OPENSSL_STRING_push(reqnames, *args))
373: goto end;
374: } else
375: badarg = 1;
376: } else if (!strcmp(*args, "-index")) {
377: if (args[1]) {
378: args++;
379: ridx_filename = *args;
380: } else
381: badarg = 1;
382: } else if (!strcmp(*args, "-CA")) {
383: if (args[1]) {
384: args++;
385: rca_filename = *args;
386: } else
387: badarg = 1;
388: } else if (!strcmp(*args, "-nmin")) {
389: if (args[1]) {
390: args++;
391: nmin = strtonum(*args, 0, INT_MAX, &errstr);
392: if (errstr) {
393: BIO_printf(bio_err,
394: "Illegal update period %s: %s\n",
395: *args, errstr);
396: badarg = 1;
397: }
398: }
399: if (ndays == -1)
400: ndays = 0;
401: else
402: badarg = 1;
403: } else if (!strcmp(*args, "-nrequest")) {
404: if (args[1]) {
405: args++;
406: accept_count = strtonum(*args, 0, INT_MAX, &errstr);
407: if (errstr) {
408: BIO_printf(bio_err,
409: "Illegal accept count %s: %s\n",
410: *args, errstr);
411: badarg = 1;
412: }
413: } else
414: badarg = 1;
415: } else if (!strcmp(*args, "-ndays")) {
416: if (args[1]) {
417: args++;
418: ndays = strtonum(*args, 0, INT_MAX, &errstr);
419: if (errstr) {
420: BIO_printf(bio_err,
421: "Illegal update period %s: %s\n",
422: *args, errstr);
423: badarg = 1;
424: }
425: } else
426: badarg = 1;
427: } else if (!strcmp(*args, "-rsigner")) {
428: if (args[1]) {
429: args++;
430: rsignfile = *args;
431: } else
432: badarg = 1;
433: } else if (!strcmp(*args, "-rkey")) {
434: if (args[1]) {
435: args++;
436: rkeyfile = *args;
437: } else
438: badarg = 1;
439: } else if (!strcmp(*args, "-rother")) {
440: if (args[1]) {
441: args++;
442: rcertfile = *args;
443: } else
444: badarg = 1;
445: } else if ((cert_id_md = EVP_get_digestbyname((*args) + 1)) == NULL) {
446: badarg = 1;
447: }
448: args++;
449: }
450:
451: /* Have we anything to do? */
452: if (!req && !reqin && !respin && !(port && ridx_filename))
453: badarg = 1;
454:
455: if (badarg) {
456: BIO_printf(bio_err, "OCSP utility\n");
457: BIO_printf(bio_err, "Usage ocsp [options]\n");
458: BIO_printf(bio_err, "where options are\n");
459: BIO_printf(bio_err, "-out file output filename\n");
460: BIO_printf(bio_err, "-issuer file issuer certificate\n");
461: BIO_printf(bio_err, "-cert file certificate to check\n");
462: BIO_printf(bio_err, "-serial n serial number to check\n");
463: BIO_printf(bio_err, "-signer file certificate to sign OCSP request with\n");
464: BIO_printf(bio_err, "-signkey file private key to sign OCSP request with\n");
465: BIO_printf(bio_err, "-sign_other file additional certificates to include in signed request\n");
466: BIO_printf(bio_err, "-no_certs don't include any certificates in signed request\n");
467: BIO_printf(bio_err, "-req_text print text form of request\n");
468: BIO_printf(bio_err, "-resp_text print text form of response\n");
469: BIO_printf(bio_err, "-text print text form of request and response\n");
470: BIO_printf(bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n");
471: BIO_printf(bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
472: BIO_printf(bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n");
473: BIO_printf(bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n");
474: BIO_printf(bio_err, "-nonce add OCSP nonce to request\n");
475: BIO_printf(bio_err, "-no_nonce don't add OCSP nonce to request\n");
476: BIO_printf(bio_err, "-url URL OCSP responder URL\n");
477: BIO_printf(bio_err, "-host host:n send OCSP request to host on port n\n");
478: BIO_printf(bio_err, "-path path to use in OCSP request\n");
479: BIO_printf(bio_err, "-CApath dir trusted certificates directory\n");
480: BIO_printf(bio_err, "-CAfile file trusted certificates file\n");
481: BIO_printf(bio_err, "-VAfile file validator certificates file\n");
482: BIO_printf(bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
483: BIO_printf(bio_err, "-status_age n maximum status age in seconds\n");
484: BIO_printf(bio_err, "-noverify don't verify response at all\n");
485: BIO_printf(bio_err, "-verify_other file additional certificates to search for signer\n");
486: BIO_printf(bio_err, "-trust_other don't verify additional certificates\n");
487: BIO_printf(bio_err, "-no_intern don't search certificates contained in response for signer\n");
488: BIO_printf(bio_err, "-no_signature_verify don't check signature on response\n");
489: BIO_printf(bio_err, "-no_cert_verify don't check signing certificate\n");
490: BIO_printf(bio_err, "-no_chain don't chain verify response\n");
491: BIO_printf(bio_err, "-no_cert_checks don't do additional checks on signing certificate\n");
492: BIO_printf(bio_err, "-port num port to run responder on\n");
493: BIO_printf(bio_err, "-index file certificate status index file\n");
494: BIO_printf(bio_err, "-CA file CA certificate\n");
495: BIO_printf(bio_err, "-rsigner file responder certificate to sign responses with\n");
496: BIO_printf(bio_err, "-rkey file responder key to sign responses with\n");
497: BIO_printf(bio_err, "-rother file other certificates to include in response\n");
498: BIO_printf(bio_err, "-resp_no_certs don't include any certificates in response\n");
499: BIO_printf(bio_err, "-nmin n number of minutes before next update\n");
500: BIO_printf(bio_err, "-ndays n number of days before next update\n");
501: BIO_printf(bio_err, "-resp_key_id identify reponse by signing certificate key ID\n");
502: BIO_printf(bio_err, "-nrequest n number of requests to accept (default unlimited)\n");
503: BIO_printf(bio_err, "-<dgst alg> use specified digest in the request\n");
504: goto end;
505: }
506: if (outfile)
507: out = BIO_new_file(outfile, "w");
508: else
509: out = BIO_new_fp(stdout, BIO_NOCLOSE);
510:
511: if (!out) {
512: BIO_printf(bio_err, "Error opening output file\n");
513: goto end;
514: }
515: if (!req && (add_nonce != 2))
516: add_nonce = 0;
517:
518: if (!req && reqin) {
519: derbio = BIO_new_file(reqin, "rb");
520: if (!derbio) {
521: BIO_printf(bio_err, "Error Opening OCSP request file\n");
522: goto end;
523: }
524: req = d2i_OCSP_REQUEST_bio(derbio, NULL);
525: BIO_free(derbio);
526: if (!req) {
527: BIO_printf(bio_err, "Error reading OCSP request\n");
528: goto end;
529: }
530: }
531: if (!req && port) {
532: acbio = init_responder(port);
533: if (!acbio)
534: goto end;
535: }
536: if (rsignfile && !rdb) {
537: if (!rkeyfile)
538: rkeyfile = rsignfile;
539: rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
1.4 bcook 540: NULL, "responder certificate");
1.1 jsing 541: if (!rsigner) {
542: BIO_printf(bio_err, "Error loading responder certificate\n");
543: goto end;
544: }
545: rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
1.4 bcook 546: NULL, "CA certificate");
1.1 jsing 547: if (rcertfile) {
548: rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
1.4 bcook 549: NULL, "responder other certificates");
1.1 jsing 550: if (!rother)
551: goto end;
552: }
1.4 bcook 553: rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL,
1.1 jsing 554: "responder private key");
555: if (!rkey)
556: goto end;
557: }
558: if (acbio)
559: BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
560:
561: redo_accept:
562:
563: if (acbio) {
564: if (!do_responder(&req, &cbio, acbio, port))
565: goto end;
566: if (!req) {
567: resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
568: send_ocsp_response(cbio, resp);
569: goto done_resp;
570: }
571: }
572: if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) {
573: BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
574: goto end;
575: }
576: if (req && add_nonce)
577: OCSP_request_add1_nonce(req, NULL, -1);
578:
579: if (signfile) {
580: if (!keyfile)
581: keyfile = signfile;
582: signer = load_cert(bio_err, signfile, FORMAT_PEM,
1.4 bcook 583: NULL, "signer certificate");
1.1 jsing 584: if (!signer) {
585: BIO_printf(bio_err, "Error loading signer certificate\n");
586: goto end;
587: }
588: if (sign_certfile) {
589: sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
1.4 bcook 590: NULL, "signer certificates");
1.1 jsing 591: if (!sign_other)
592: goto end;
593: }
1.4 bcook 594: key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL,
1.1 jsing 595: "signer private key");
596: if (!key)
597: goto end;
598:
599: if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags)) {
600: BIO_printf(bio_err, "Error signing OCSP request\n");
601: goto end;
602: }
603: }
604: if (req_text && req)
605: OCSP_REQUEST_print(out, req, 0);
606:
607: if (reqout) {
608: derbio = BIO_new_file(reqout, "wb");
609: if (!derbio) {
610: BIO_printf(bio_err, "Error opening file %s\n", reqout);
611: goto end;
612: }
613: i2d_OCSP_REQUEST_bio(derbio, req);
614: BIO_free(derbio);
615: }
616: if (ridx_filename && (!rkey || !rsigner || !rca_cert)) {
617: BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
618: goto end;
619: }
620: if (ridx_filename && !rdb) {
621: rdb = load_index(ridx_filename, NULL);
622: if (!rdb)
623: goto end;
624: if (!index_index(rdb))
625: goto end;
626: }
627: if (rdb) {
628: i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
629: if (cbio)
630: send_ocsp_response(cbio, resp);
631: } else if (host) {
632: resp = process_responder(bio_err, req, host, path,
633: port, use_ssl, headers, req_timeout);
634: if (!resp)
635: goto end;
636: } else if (respin) {
637: derbio = BIO_new_file(respin, "rb");
638: if (!derbio) {
639: BIO_printf(bio_err, "Error Opening OCSP response file\n");
640: goto end;
641: }
642: resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
643: BIO_free(derbio);
644: if (!resp) {
645: BIO_printf(bio_err, "Error reading OCSP response\n");
646: goto end;
647: }
648: } else {
649: ret = 0;
650: goto end;
651: }
652:
653: done_resp:
654:
655: if (respout) {
656: derbio = BIO_new_file(respout, "wb");
657: if (!derbio) {
658: BIO_printf(bio_err, "Error opening file %s\n", respout);
659: goto end;
660: }
661: i2d_OCSP_RESPONSE_bio(derbio, resp);
662: BIO_free(derbio);
663: }
664: i = OCSP_response_status(resp);
665:
666: if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
667: BIO_printf(out, "Responder Error: %s (%d)\n",
668: OCSP_response_status_str(i), i);
669: if (ignore_err)
670: goto redo_accept;
671: ret = 0;
672: goto end;
673: }
674: if (resp_text)
675: OCSP_RESPONSE_print(out, resp, 0);
676:
677: /* If running as responder don't verify our own response */
678: if (cbio) {
679: if (accept_count > 0)
680: accept_count--;
681: /* Redo if more connections needed */
682: if (accept_count) {
683: BIO_free_all(cbio);
684: cbio = NULL;
685: OCSP_REQUEST_free(req);
686: req = NULL;
687: OCSP_RESPONSE_free(resp);
688: resp = NULL;
689: goto redo_accept;
690: }
691: goto end;
692: }
693: if (!store)
694: store = setup_verify(bio_err, CAfile, CApath);
695: if (!store)
696: goto end;
697: if (verify_certfile) {
698: verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
1.4 bcook 699: NULL, "validator certificate");
1.1 jsing 700: if (!verify_other)
701: goto end;
702: }
703: bs = OCSP_response_get1_basic(resp);
704:
705: if (!bs) {
706: BIO_printf(bio_err, "Error parsing response\n");
707: goto end;
708: }
709: if (!noverify) {
710: if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
711: if (i == -1)
712: BIO_printf(bio_err, "WARNING: no nonce in response\n");
713: else {
714: BIO_printf(bio_err, "Nonce Verify error\n");
715: goto end;
716: }
717: }
718: i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
719: if (i < 0)
720: i = OCSP_basic_verify(bs, NULL, store, 0);
721:
722: if (i <= 0) {
723: BIO_printf(bio_err, "Response Verify Failure\n");
724: ERR_print_errors(bio_err);
725: } else
726: BIO_printf(bio_err, "Response verify OK\n");
727:
728: }
729: if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
730: goto end;
731:
732: ret = 0;
733:
734: end:
735: ERR_print_errors(bio_err);
736: X509_free(signer);
737: X509_STORE_free(store);
738: EVP_PKEY_free(key);
739: EVP_PKEY_free(rkey);
740: X509_free(issuer);
741: X509_free(cert);
742: X509_free(rsigner);
743: X509_free(rca_cert);
744: free_index(rdb);
745: BIO_free_all(cbio);
746: BIO_free_all(acbio);
747: BIO_free(out);
748: OCSP_REQUEST_free(req);
749: OCSP_RESPONSE_free(resp);
750: OCSP_BASICRESP_free(bs);
751: sk_OPENSSL_STRING_free(reqnames);
752: sk_OCSP_CERTID_free(ids);
753: sk_X509_pop_free(sign_other, X509_free);
754: sk_X509_pop_free(verify_other, X509_free);
755: sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
756:
757: if (use_ssl != -1) {
758: free(host);
759: free(port);
760: free(path);
761: }
762: return (ret);
763: }
764:
765: static int
766: add_ocsp_cert(OCSP_REQUEST ** req, X509 * cert, const EVP_MD * cert_id_md, X509 * issuer,
767: STACK_OF(OCSP_CERTID) * ids)
768: {
769: OCSP_CERTID *id;
770: if (!issuer) {
771: BIO_printf(bio_err, "No issuer certificate specified\n");
772: return 0;
773: }
774: if (!*req)
775: *req = OCSP_REQUEST_new();
776: if (!*req)
777: goto err;
778: id = OCSP_cert_to_id(cert_id_md, cert, issuer);
779: if (!id || !sk_OCSP_CERTID_push(ids, id))
780: goto err;
781: if (!OCSP_request_add0_id(*req, id))
782: goto err;
783: return 1;
784:
785: err:
786: BIO_printf(bio_err, "Error Creating OCSP request\n");
787: return 0;
788: }
789:
790: static int
791: add_ocsp_serial(OCSP_REQUEST ** req, char *serial, const EVP_MD * cert_id_md, X509 * issuer,
792: STACK_OF(OCSP_CERTID) * ids)
793: {
794: OCSP_CERTID *id;
795: X509_NAME *iname;
796: ASN1_BIT_STRING *ikey;
797: ASN1_INTEGER *sno;
798: if (!issuer) {
799: BIO_printf(bio_err, "No issuer certificate specified\n");
800: return 0;
801: }
802: if (!*req)
803: *req = OCSP_REQUEST_new();
804: if (!*req)
805: goto err;
806: iname = X509_get_subject_name(issuer);
807: ikey = X509_get0_pubkey_bitstr(issuer);
808: sno = s2i_ASN1_INTEGER(NULL, serial);
809: if (!sno) {
810: BIO_printf(bio_err, "Error converting serial number %s\n", serial);
811: return 0;
812: }
813: id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
814: ASN1_INTEGER_free(sno);
815: if (!id || !sk_OCSP_CERTID_push(ids, id))
816: goto err;
817: if (!OCSP_request_add0_id(*req, id))
818: goto err;
819: return 1;
820:
821: err:
822: BIO_printf(bio_err, "Error Creating OCSP request\n");
823: return 0;
824: }
825:
826: static int
827: print_ocsp_summary(BIO * out, OCSP_BASICRESP * bs, OCSP_REQUEST * req,
828: STACK_OF(OPENSSL_STRING) * names,
829: STACK_OF(OCSP_CERTID) * ids, long nsec,
830: long maxage)
831: {
832: OCSP_CERTID *id;
833: char *name;
834: int i;
835:
836: int status, reason;
837:
838: ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
839:
840: if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids))
841: return 1;
842:
843: for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
844: id = sk_OCSP_CERTID_value(ids, i);
845: name = sk_OPENSSL_STRING_value(names, i);
846: BIO_printf(out, "%s: ", name);
847:
848: if (!OCSP_resp_find_status(bs, id, &status, &reason,
849: &rev, &thisupd, &nextupd)) {
850: BIO_puts(out, "ERROR: No Status found.\n");
851: continue;
852: }
853: /*
854: * Check validity: if invalid write to output BIO so we know
855: * which response this refers to.
856: */
857: if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
858: BIO_puts(out, "WARNING: Status times invalid.\n");
859: ERR_print_errors(out);
860: }
861: BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
862:
863: BIO_puts(out, "\tThis Update: ");
864: ASN1_GENERALIZEDTIME_print(out, thisupd);
865: BIO_puts(out, "\n");
866:
867: if (nextupd) {
868: BIO_puts(out, "\tNext Update: ");
869: ASN1_GENERALIZEDTIME_print(out, nextupd);
870: BIO_puts(out, "\n");
871: }
872: if (status != V_OCSP_CERTSTATUS_REVOKED)
873: continue;
874:
875: if (reason != -1)
876: BIO_printf(out, "\tReason: %s\n",
877: OCSP_crl_reason_str(reason));
878:
879: BIO_puts(out, "\tRevocation Time: ");
880: ASN1_GENERALIZEDTIME_print(out, rev);
881: BIO_puts(out, "\n");
882: }
883:
884: return 1;
885: }
886:
887:
888: static int
889: make_ocsp_response(OCSP_RESPONSE ** resp, OCSP_REQUEST * req, CA_DB * db,
890: X509 * ca, X509 * rcert, EVP_PKEY * rkey,
891: STACK_OF(X509) * rother, unsigned long flags,
892: int nmin, int ndays)
893: {
894: ASN1_TIME *thisupd = NULL, *nextupd = NULL;
895: OCSP_CERTID *cid, *ca_id = NULL;
896: OCSP_BASICRESP *bs = NULL;
897: int i, id_count, ret = 1;
898:
899: id_count = OCSP_request_onereq_count(req);
900:
901: if (id_count <= 0) {
902: *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
903: goto end;
904: }
905: bs = OCSP_BASICRESP_new();
906: thisupd = X509_gmtime_adj(NULL, 0);
907: if (ndays != -1)
908: nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24);
909:
910: /* Examine each certificate id in the request */
911: for (i = 0; i < id_count; i++) {
912: OCSP_ONEREQ *one;
913: ASN1_INTEGER *serial;
914: char **inf;
915: ASN1_OBJECT *cert_id_md_oid;
916: const EVP_MD *cert_id_md;
917: one = OCSP_request_onereq_get0(req, i);
918: cid = OCSP_onereq_get0_id(one);
919:
920: OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
921:
922: cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
923: if (!cert_id_md) {
924: *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
925: NULL);
926: goto end;
927: }
928: if (ca_id)
929: OCSP_CERTID_free(ca_id);
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:
979: end:
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:
1032: err:
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: }
1175: err:
1176: if (ctx)
1177: OCSP_REQ_CTX_free(ctx);
1178:
1179: return rsp;
1180: }
1181:
1182: OCSP_RESPONSE *
1183: process_responder(BIO * err, OCSP_REQUEST * req,
1184: char *host, char *path, char *port, int use_ssl,
1185: STACK_OF(CONF_VALUE) * headers,
1186: int req_timeout)
1187: {
1188: BIO *cbio = NULL;
1189: SSL_CTX *ctx = NULL;
1190: OCSP_RESPONSE *resp = NULL;
1191: cbio = BIO_new_connect(host);
1192: if (!cbio) {
1193: BIO_printf(err, "Error creating connect BIO\n");
1194: goto end;
1195: }
1196: if (port)
1197: BIO_set_conn_port(cbio, port);
1198: if (use_ssl == 1) {
1199: BIO *sbio;
1200: ctx = SSL_CTX_new(SSLv23_client_method());
1201: if (ctx == NULL) {
1202: BIO_printf(err, "Error creating SSL context.\n");
1203: goto end;
1204: }
1205: SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1206: sbio = BIO_new_ssl(ctx, 1);
1207: cbio = BIO_push(sbio, cbio);
1208: }
1209: resp = query_responder(err, cbio, path, headers, req, req_timeout);
1210: if (!resp)
1211: BIO_printf(bio_err, "Error querying OCSP responder\n");
1212: end:
1213: if (cbio)
1214: BIO_free_all(cbio);
1215: if (ctx)
1216: SSL_CTX_free(ctx);
1217: return resp;
1218: }
1219:
1220: #endif