2 * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
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
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>
21 * Utility functions related to sending OCSP requests and extracting relevant
22 * information from the response.
26 * Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ pointer:
27 * useful if we want to add extensions.
30 OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
32 OCSP_ONEREQ *one = NULL;
34 if ((one = OCSP_ONEREQ_new()) == NULL)
36 OCSP_CERTID_free(one->reqCert);
38 if (req && !sk_OCSP_ONEREQ_push(req->tbsRequest.requestList, one))
42 OCSP_ONEREQ_free(one);
46 /* Set requestorName from an X509_NAME structure */
48 int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
52 gen = GENERAL_NAME_new();
55 if (!X509_NAME_set(&gen->d.directoryName, nm)) {
56 GENERAL_NAME_free(gen);
59 gen->type = GEN_DIRNAME;
60 GENERAL_NAME_free(req->tbsRequest.requestorName);
61 req->tbsRequest.requestorName = gen;
65 /* Add a certificate to an OCSP request */
67 int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
70 if (req->optionalSignature == NULL)
71 req->optionalSignature = OCSP_SIGNATURE_new();
72 sig = req->optionalSignature;
77 if (sig->certs == NULL
78 && (sig->certs = sk_X509_new_null()) == NULL)
81 if (!sk_X509_push(sig->certs, cert))
88 * Sign an OCSP request set the requestorName to the subject name of an
89 * optional signers certificate and include one or more optional certificates
90 * in the request. Behaves like PKCS7_sign().
93 int OCSP_request_sign(OCSP_REQUEST *req,
97 STACK_OF(X509) *certs, unsigned long flags)
102 if (!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
105 if ((req->optionalSignature = OCSP_SIGNATURE_new()) == NULL)
108 if (!X509_check_private_key(signer, key)) {
109 OCSPerr(OCSP_F_OCSP_REQUEST_SIGN,
110 OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
113 if (!OCSP_REQUEST_sign(req, key, dgst))
117 if (!(flags & OCSP_NOCERTS)) {
118 if (!OCSP_request_add1_cert(req, signer))
120 for (i = 0; i < sk_X509_num(certs); i++) {
121 x = sk_X509_value(certs, i);
122 if (!OCSP_request_add1_cert(req, x))
129 OCSP_SIGNATURE_free(req->optionalSignature);
130 req->optionalSignature = NULL;
134 /* Get response status */
136 int OCSP_response_status(OCSP_RESPONSE *resp)
138 return ASN1_ENUMERATED_get(resp->responseStatus);
142 * Extract basic response from OCSP_RESPONSE or NULL if no basic response
146 OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp)
149 rb = resp->responseBytes;
151 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
154 if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic) {
155 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
159 return ASN1_item_unpack(rb->response, ASN1_ITEM_rptr(OCSP_BASICRESP));
162 ASN1_OCTET_STRING *OCSP_resp_get0_signature(OCSP_BASICRESP *bs)
164 return bs->signature;
168 * Return number of OCSP_SINGLERESP responses present in a basic response.
171 int OCSP_resp_count(OCSP_BASICRESP *bs)
175 return sk_OCSP_SINGLERESP_num(bs->tbsResponseData.responses);
178 /* Extract an OCSP_SINGLERESP response with a given index */
180 OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
184 return sk_OCSP_SINGLERESP_value(bs->tbsResponseData.responses, idx);
187 ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(OCSP_BASICRESP* bs)
191 return bs->tbsResponseData.producedAt;
194 /* Look single response matching a given certificate ID */
196 int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
199 STACK_OF(OCSP_SINGLERESP) *sresp;
200 OCSP_SINGLERESP *single;
207 sresp = bs->tbsResponseData.responses;
208 for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++) {
209 single = sk_OCSP_SINGLERESP_value(sresp, i);
210 if (!OCSP_id_cmp(id, single->certId))
217 * Extract status information from an OCSP_SINGLERESP structure. Note: the
218 * revtime and reason values are only set if the certificate status is
219 * revoked. Returns numerical value of status.
222 int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
223 ASN1_GENERALIZEDTIME **revtime,
224 ASN1_GENERALIZEDTIME **thisupd,
225 ASN1_GENERALIZEDTIME **nextupd)
228 OCSP_CERTSTATUS *cst;
231 cst = single->certStatus;
233 if (ret == V_OCSP_CERTSTATUS_REVOKED) {
234 OCSP_REVOKEDINFO *rev = cst->value.revoked;
236 *revtime = rev->revocationTime;
238 if (rev->revocationReason)
239 *reason = ASN1_ENUMERATED_get(rev->revocationReason);
245 *thisupd = single->thisUpdate;
247 *nextupd = single->nextUpdate;
252 * This function combines the previous ones: look up a certificate ID and if
253 * found extract status information. Return 0 is successful.
256 int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
258 ASN1_GENERALIZEDTIME **revtime,
259 ASN1_GENERALIZEDTIME **thisupd,
260 ASN1_GENERALIZEDTIME **nextupd)
263 OCSP_SINGLERESP *single;
264 i = OCSP_resp_find(bs, id, -1);
265 /* Maybe check for multiple responses and give an error? */
268 single = OCSP_resp_get0(bs, i);
269 i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
276 * Check validity of thisUpdate and nextUpdate fields. It is possible that
277 * the request will take a few seconds to process and/or the time wont be
278 * totally accurate. Therefore to avoid rejecting otherwise valid time we
279 * allow the times to be within 'nsec' of the current time. Also to avoid
280 * accepting very old responses without a nextUpdate field an optional maxage
281 * parameter specifies the maximum age the thisUpdate field can be.
284 int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd,
285 ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
290 /* Check thisUpdate is valid and not more than nsec in the future */
291 if (!ASN1_GENERALIZEDTIME_check(thisupd)) {
292 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
295 t_tmp = t_now + nsec;
296 if (X509_cmp_time(thisupd, &t_tmp) > 0) {
297 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
302 * If maxsec specified check thisUpdate is not more than maxsec in
306 t_tmp = t_now - maxsec;
307 if (X509_cmp_time(thisupd, &t_tmp) < 0) {
308 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
317 /* Check nextUpdate is valid and not more than nsec in the past */
318 if (!ASN1_GENERALIZEDTIME_check(nextupd)) {
319 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
322 t_tmp = t_now - nsec;
323 if (X509_cmp_time(nextupd, &t_tmp) < 0) {
324 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
329 /* Also don't allow nextUpdate to precede thisUpdate */
330 if (ASN1_STRING_cmp(nextupd, thisupd) < 0) {
331 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY,
332 OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
339 OCSP_CERTID *OCSP_SINGLERESP_get0_id(OCSP_SINGLERESP *single)
341 return single->certId;