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/rand.h>
15 #include <openssl/x509.h>
16 #include <openssl/pem.h>
17 #include <openssl/x509v3.h>
18 #include <openssl/ocsp.h>
22 * Utility functions related to sending OCSP requests and extracting relevant
23 * information from the response.
27 * Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ pointer:
28 * useful if we want to add extensions.
31 OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
33 OCSP_ONEREQ *one = NULL;
35 if ((one = OCSP_ONEREQ_new()) == NULL)
37 OCSP_CERTID_free(one->reqCert);
39 if (req && !sk_OCSP_ONEREQ_push(req->tbsRequest.requestList, one))
43 OCSP_ONEREQ_free(one);
47 /* Set requestorName from an X509_NAME structure */
49 int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
53 gen = GENERAL_NAME_new();
56 if (!X509_NAME_set(&gen->d.directoryName, nm)) {
57 GENERAL_NAME_free(gen);
60 gen->type = GEN_DIRNAME;
61 GENERAL_NAME_free(req->tbsRequest.requestorName);
62 req->tbsRequest.requestorName = gen;
66 /* Add a certificate to an OCSP request */
68 int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
71 if (req->optionalSignature == NULL)
72 req->optionalSignature = OCSP_SIGNATURE_new();
73 sig = req->optionalSignature;
78 if (sig->certs == NULL
79 && (sig->certs = sk_X509_new_null()) == NULL)
82 if (!sk_X509_push(sig->certs, cert))
89 * Sign an OCSP request set the requestorName to the subject name of an
90 * optional signers certificate and include one or more optional certificates
91 * in the request. Behaves like PKCS7_sign().
94 int OCSP_request_sign(OCSP_REQUEST *req,
98 STACK_OF(X509) *certs, unsigned long flags)
103 if (!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
106 if ((req->optionalSignature = OCSP_SIGNATURE_new()) == NULL)
109 if (!X509_check_private_key(signer, key)) {
110 OCSPerr(OCSP_F_OCSP_REQUEST_SIGN,
111 OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
114 if (!OCSP_REQUEST_sign(req, key, dgst))
118 if (!(flags & OCSP_NOCERTS)) {
119 if (!OCSP_request_add1_cert(req, signer))
121 for (i = 0; i < sk_X509_num(certs); i++) {
122 x = sk_X509_value(certs, i);
123 if (!OCSP_request_add1_cert(req, x))
130 OCSP_SIGNATURE_free(req->optionalSignature);
131 req->optionalSignature = NULL;
135 /* Get response status */
137 int OCSP_response_status(OCSP_RESPONSE *resp)
139 return ASN1_ENUMERATED_get(resp->responseStatus);
143 * Extract basic response from OCSP_RESPONSE or NULL if no basic response
147 OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp)
150 rb = resp->responseBytes;
152 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
155 if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic) {
156 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
160 return ASN1_item_unpack(rb->response, ASN1_ITEM_rptr(OCSP_BASICRESP));
163 ASN1_OCTET_STRING *OCSP_resp_get0_signature(OCSP_BASICRESP *bs)
165 return bs->signature;
169 * Return number of OCSP_SINGLERESP responses present in a basic response.
172 int OCSP_resp_count(OCSP_BASICRESP *bs)
176 return sk_OCSP_SINGLERESP_num(bs->tbsResponseData.responses);
179 /* Extract an OCSP_SINGLERESP response with a given index */
181 OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
185 return sk_OCSP_SINGLERESP_value(bs->tbsResponseData.responses, idx);
188 ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(OCSP_BASICRESP* bs)
192 return bs->tbsResponseData.producedAt;
195 /* Look single response matching a given certificate ID */
197 int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
200 STACK_OF(OCSP_SINGLERESP) *sresp;
201 OCSP_SINGLERESP *single;
208 sresp = bs->tbsResponseData.responses;
209 for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++) {
210 single = sk_OCSP_SINGLERESP_value(sresp, i);
211 if (!OCSP_id_cmp(id, single->certId))
218 * Extract status information from an OCSP_SINGLERESP structure. Note: the
219 * revtime and reason values are only set if the certificate status is
220 * revoked. Returns numerical value of status.
223 int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
224 ASN1_GENERALIZEDTIME **revtime,
225 ASN1_GENERALIZEDTIME **thisupd,
226 ASN1_GENERALIZEDTIME **nextupd)
229 OCSP_CERTSTATUS *cst;
232 cst = single->certStatus;
234 if (ret == V_OCSP_CERTSTATUS_REVOKED) {
235 OCSP_REVOKEDINFO *rev = cst->value.revoked;
237 *revtime = rev->revocationTime;
239 if (rev->revocationReason)
240 *reason = ASN1_ENUMERATED_get(rev->revocationReason);
246 *thisupd = single->thisUpdate;
248 *nextupd = single->nextUpdate;
253 * This function combines the previous ones: look up a certificate ID and if
254 * found extract status information. Return 0 is successful.
257 int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
259 ASN1_GENERALIZEDTIME **revtime,
260 ASN1_GENERALIZEDTIME **thisupd,
261 ASN1_GENERALIZEDTIME **nextupd)
264 OCSP_SINGLERESP *single;
265 i = OCSP_resp_find(bs, id, -1);
266 /* Maybe check for multiple responses and give an error? */
269 single = OCSP_resp_get0(bs, i);
270 i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
277 * Check validity of thisUpdate and nextUpdate fields. It is possible that
278 * the request will take a few seconds to process and/or the time wont be
279 * totally accurate. Therefore to avoid rejecting otherwise valid time we
280 * allow the times to be within 'nsec' of the current time. Also to avoid
281 * accepting very old responses without a nextUpdate field an optional maxage
282 * parameter specifies the maximum age the thisUpdate field can be.
285 int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd,
286 ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
291 /* Check thisUpdate is valid and not more than nsec in the future */
292 if (!ASN1_GENERALIZEDTIME_check(thisupd)) {
293 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
296 t_tmp = t_now + nsec;
297 if (X509_cmp_time(thisupd, &t_tmp) > 0) {
298 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
303 * If maxsec specified check thisUpdate is not more than maxsec in
307 t_tmp = t_now - maxsec;
308 if (X509_cmp_time(thisupd, &t_tmp) < 0) {
309 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
318 /* Check nextUpdate is valid and not more than nsec in the past */
319 if (!ASN1_GENERALIZEDTIME_check(nextupd)) {
320 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
323 t_tmp = t_now - nsec;
324 if (X509_cmp_time(nextupd, &t_tmp) < 0) {
325 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
330 /* Also don't allow nextUpdate to precede thisUpdate */
331 if (ASN1_STRING_cmp(nextupd, thisupd) < 0) {
332 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY,
333 OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
340 OCSP_CERTID *OCSP_SINGLERESP_get0_id(OCSP_SINGLERESP *single)
342 return single->certId;