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source: vbox/trunk/src/libs/openssl-1.1.0g/crypto/ocsp/ocsp_cl.c@ 69890

Last change on this file since 69890 was 69890, checked in by vboxsync, 7 years ago

Added OpenSSL 1.1.0g with unneeded files removed, otherwise unmodified.
bugref:8070: src/libs maintenance
  • Property svn:eol-style set to native
File size: 9.9 KB
Line 
1/*
2 * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <time.h>
12#include "internal/cryptlib.h"
13#include <openssl/objects.h>
14#include <openssl/x509.h>
15#include <openssl/pem.h>
16#include <openssl/x509v3.h>
17#include <openssl/ocsp.h>
18#include "ocsp_lcl.h"
19
20/*
21 * Utility functions related to sending OCSP requests and extracting relevant
22 * information from the response.
23 */
24
25/*
26 * Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ pointer:
27 * useful if we want to add extensions.
28 */
29
30OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
31{
32 OCSP_ONEREQ *one = NULL;
33
34 if ((one = OCSP_ONEREQ_new()) == NULL)
35 return NULL;
36 OCSP_CERTID_free(one->reqCert);
37 one->reqCert = cid;
38 if (req && !sk_OCSP_ONEREQ_push(req->tbsRequest.requestList, one)) {
39 one->reqCert = NULL; /* do not free on error */
40 goto err;
41 }
42 return one;
43 err:
44 OCSP_ONEREQ_free(one);
45 return NULL;
46}
47
48/* Set requestorName from an X509_NAME structure */
49
50int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
51{
52 GENERAL_NAME *gen;
53
54 gen = GENERAL_NAME_new();
55 if (gen == NULL)
56 return 0;
57 if (!X509_NAME_set(&gen->d.directoryName, nm)) {
58 GENERAL_NAME_free(gen);
59 return 0;
60 }
61 gen->type = GEN_DIRNAME;
62 GENERAL_NAME_free(req->tbsRequest.requestorName);
63 req->tbsRequest.requestorName = gen;
64 return 1;
65}
66
67/* Add a certificate to an OCSP request */
68
69int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
70{
71 OCSP_SIGNATURE *sig;
72 if (req->optionalSignature == NULL)
73 req->optionalSignature = OCSP_SIGNATURE_new();
74 sig = req->optionalSignature;
75 if (sig == NULL)
76 return 0;
77 if (cert == NULL)
78 return 1;
79 if (sig->certs == NULL
80 && (sig->certs = sk_X509_new_null()) == NULL)
81 return 0;
82
83 if (!sk_X509_push(sig->certs, cert))
84 return 0;
85 X509_up_ref(cert);
86 return 1;
87}
88
89/*
90 * Sign an OCSP request set the requestorName to the subject name of an
91 * optional signers certificate and include one or more optional certificates
92 * in the request. Behaves like PKCS7_sign().
93 */
94
95int OCSP_request_sign(OCSP_REQUEST *req,
96 X509 *signer,
97 EVP_PKEY *key,
98 const EVP_MD *dgst,
99 STACK_OF(X509) *certs, unsigned long flags)
100{
101 int i;
102 X509 *x;
103
104 if (!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
105 goto err;
106
107 if ((req->optionalSignature = OCSP_SIGNATURE_new()) == NULL)
108 goto err;
109 if (key) {
110 if (!X509_check_private_key(signer, key)) {
111 OCSPerr(OCSP_F_OCSP_REQUEST_SIGN,
112 OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
113 goto err;
114 }
115 if (!OCSP_REQUEST_sign(req, key, dgst))
116 goto err;
117 }
118
119 if (!(flags & OCSP_NOCERTS)) {
120 if (!OCSP_request_add1_cert(req, signer))
121 goto err;
122 for (i = 0; i < sk_X509_num(certs); i++) {
123 x = sk_X509_value(certs, i);
124 if (!OCSP_request_add1_cert(req, x))
125 goto err;
126 }
127 }
128
129 return 1;
130 err:
131 OCSP_SIGNATURE_free(req->optionalSignature);
132 req->optionalSignature = NULL;
133 return 0;
134}
135
136/* Get response status */
137
138int OCSP_response_status(OCSP_RESPONSE *resp)
139{
140 return ASN1_ENUMERATED_get(resp->responseStatus);
141}
142
143/*
144 * Extract basic response from OCSP_RESPONSE or NULL if no basic response
145 * present.
146 */
147
148OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp)
149{
150 OCSP_RESPBYTES *rb;
151 rb = resp->responseBytes;
152 if (!rb) {
153 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
154 return NULL;
155 }
156 if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic) {
157 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
158 return NULL;
159 }
160
161 return ASN1_item_unpack(rb->response, ASN1_ITEM_rptr(OCSP_BASICRESP));
162}
163
164const ASN1_OCTET_STRING *OCSP_resp_get0_signature(const OCSP_BASICRESP *bs)
165{
166 return bs->signature;
167}
168
169/*
170 * Return number of OCSP_SINGLERESP responses present in a basic response.
171 */
172
173int OCSP_resp_count(OCSP_BASICRESP *bs)
174{
175 if (!bs)
176 return -1;
177 return sk_OCSP_SINGLERESP_num(bs->tbsResponseData.responses);
178}
179
180/* Extract an OCSP_SINGLERESP response with a given index */
181
182OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
183{
184 if (!bs)
185 return NULL;
186 return sk_OCSP_SINGLERESP_value(bs->tbsResponseData.responses, idx);
187}
188
189const ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(const OCSP_BASICRESP* bs)
190{
191 return bs->tbsResponseData.producedAt;
192}
193
194const STACK_OF(X509) *OCSP_resp_get0_certs(const OCSP_BASICRESP *bs)
195{
196 return bs->certs;
197}
198
199int OCSP_resp_get0_id(const OCSP_BASICRESP *bs,
200 const ASN1_OCTET_STRING **pid,
201 const X509_NAME **pname)
202
203{
204 const OCSP_RESPID *rid = &bs->tbsResponseData.responderId;
205 if (rid->type == V_OCSP_RESPID_NAME) {
206 *pname = rid->value.byName;
207 *pid = NULL;
208 } else if (rid->type == V_OCSP_RESPID_KEY) {
209 *pid = rid->value.byKey;
210 *pname = NULL;
211 } else {
212 return 0;
213 }
214 return 1;
215}
216
217/* Look single response matching a given certificate ID */
218
219int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
220{
221 int i;
222 STACK_OF(OCSP_SINGLERESP) *sresp;
223 OCSP_SINGLERESP *single;
224 if (!bs)
225 return -1;
226 if (last < 0)
227 last = 0;
228 else
229 last++;
230 sresp = bs->tbsResponseData.responses;
231 for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++) {
232 single = sk_OCSP_SINGLERESP_value(sresp, i);
233 if (!OCSP_id_cmp(id, single->certId))
234 return i;
235 }
236 return -1;
237}
238
239/*
240 * Extract status information from an OCSP_SINGLERESP structure. Note: the
241 * revtime and reason values are only set if the certificate status is
242 * revoked. Returns numerical value of status.
243 */
244
245int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
246 ASN1_GENERALIZEDTIME **revtime,
247 ASN1_GENERALIZEDTIME **thisupd,
248 ASN1_GENERALIZEDTIME **nextupd)
249{
250 int ret;
251 OCSP_CERTSTATUS *cst;
252 if (!single)
253 return -1;
254 cst = single->certStatus;
255 ret = cst->type;
256 if (ret == V_OCSP_CERTSTATUS_REVOKED) {
257 OCSP_REVOKEDINFO *rev = cst->value.revoked;
258 if (revtime)
259 *revtime = rev->revocationTime;
260 if (reason) {
261 if (rev->revocationReason)
262 *reason = ASN1_ENUMERATED_get(rev->revocationReason);
263 else
264 *reason = -1;
265 }
266 }
267 if (thisupd)
268 *thisupd = single->thisUpdate;
269 if (nextupd)
270 *nextupd = single->nextUpdate;
271 return ret;
272}
273
274/*
275 * This function combines the previous ones: look up a certificate ID and if
276 * found extract status information. Return 0 is successful.
277 */
278
279int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
280 int *reason,
281 ASN1_GENERALIZEDTIME **revtime,
282 ASN1_GENERALIZEDTIME **thisupd,
283 ASN1_GENERALIZEDTIME **nextupd)
284{
285 int i;
286 OCSP_SINGLERESP *single;
287 i = OCSP_resp_find(bs, id, -1);
288 /* Maybe check for multiple responses and give an error? */
289 if (i < 0)
290 return 0;
291 single = OCSP_resp_get0(bs, i);
292 i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
293 if (status)
294 *status = i;
295 return 1;
296}
297
298/*
299 * Check validity of thisUpdate and nextUpdate fields. It is possible that
300 * the request will take a few seconds to process and/or the time won't be
301 * totally accurate. Therefore to avoid rejecting otherwise valid time we
302 * allow the times to be within 'nsec' of the current time. Also to avoid
303 * accepting very old responses without a nextUpdate field an optional maxage
304 * parameter specifies the maximum age the thisUpdate field can be.
305 */
306
307int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd,
308 ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
309{
310 int ret = 1;
311 time_t t_now, t_tmp;
312 time(&t_now);
313 /* Check thisUpdate is valid and not more than nsec in the future */
314 if (!ASN1_GENERALIZEDTIME_check(thisupd)) {
315 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
316 ret = 0;
317 } else {
318 t_tmp = t_now + nsec;
319 if (X509_cmp_time(thisupd, &t_tmp) > 0) {
320 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
321 ret = 0;
322 }
323
324 /*
325 * If maxsec specified check thisUpdate is not more than maxsec in
326 * the past
327 */
328 if (maxsec >= 0) {
329 t_tmp = t_now - maxsec;
330 if (X509_cmp_time(thisupd, &t_tmp) < 0) {
331 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
332 ret = 0;
333 }
334 }
335 }
336
337 if (!nextupd)
338 return ret;
339
340 /* Check nextUpdate is valid and not more than nsec in the past */
341 if (!ASN1_GENERALIZEDTIME_check(nextupd)) {
342 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
343 ret = 0;
344 } else {
345 t_tmp = t_now - nsec;
346 if (X509_cmp_time(nextupd, &t_tmp) < 0) {
347 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
348 ret = 0;
349 }
350 }
351
352 /* Also don't allow nextUpdate to precede thisUpdate */
353 if (ASN1_STRING_cmp(nextupd, thisupd) < 0) {
354 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY,
355 OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
356 ret = 0;
357 }
358
359 return ret;
360}
361
362const OCSP_CERTID *OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP *single)
363{
364 return single->certId;
365}
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