2 * Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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/asn1.h>
14 #include <openssl/objects.h>
15 #include <openssl/x509.h>
16 #include <openssl/pem.h>
17 #include <openssl/x509v3.h>
18 #include <openssl/ocsp.h>
19 #include "ocsp_local.h"
22 DEFINE_STACK_OF(OCSP_ONEREQ)
23 DEFINE_STACK_OF(OCSP_SINGLERESP)
26 * Utility functions related to sending OCSP requests and extracting relevant
27 * information from the response.
31 * Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ pointer:
32 * useful if we want to add extensions.
35 OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
37 OCSP_ONEREQ *one = NULL;
39 if ((one = OCSP_ONEREQ_new()) == NULL)
41 OCSP_CERTID_free(one->reqCert);
43 if (req && !sk_OCSP_ONEREQ_push(req->tbsRequest.requestList, one)) {
44 one->reqCert = NULL; /* do not free on error */
49 OCSP_ONEREQ_free(one);
53 /* Set requestorName from an X509_NAME structure */
55 int OCSP_request_set1_name(OCSP_REQUEST *req, const X509_NAME *nm)
59 gen = GENERAL_NAME_new();
62 if (!X509_NAME_set(&gen->d.directoryName, nm)) {
63 GENERAL_NAME_free(gen);
66 gen->type = GEN_DIRNAME;
67 GENERAL_NAME_free(req->tbsRequest.requestorName);
68 req->tbsRequest.requestorName = gen;
72 /* Add a certificate to an OCSP request */
74 int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
77 if (req->optionalSignature == NULL)
78 req->optionalSignature = OCSP_SIGNATURE_new();
79 sig = req->optionalSignature;
84 return X509_add_cert_new(&sig->certs, cert, X509_ADD_FLAG_UP_REF);
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 const ASN1_OCTET_STRING *OCSP_resp_get0_signature(const OCSP_BASICRESP *bs)
164 return bs->signature;
167 const X509_ALGOR *OCSP_resp_get0_tbs_sigalg(const OCSP_BASICRESP *bs)
169 return &bs->signatureAlgorithm;
172 const OCSP_RESPDATA *OCSP_resp_get0_respdata(const OCSP_BASICRESP *bs)
174 return &bs->tbsResponseData;
178 * Return number of OCSP_SINGLERESP responses present in a basic response.
181 int OCSP_resp_count(OCSP_BASICRESP *bs)
185 return sk_OCSP_SINGLERESP_num(bs->tbsResponseData.responses);
188 /* Extract an OCSP_SINGLERESP response with a given index */
190 OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
194 return sk_OCSP_SINGLERESP_value(bs->tbsResponseData.responses, idx);
197 const ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(const OCSP_BASICRESP* bs)
199 return bs->tbsResponseData.producedAt;
202 const STACK_OF(X509) *OCSP_resp_get0_certs(const OCSP_BASICRESP *bs)
207 int OCSP_resp_get0_id(const OCSP_BASICRESP *bs,
208 const ASN1_OCTET_STRING **pid,
209 const X509_NAME **pname)
211 const OCSP_RESPID *rid = &bs->tbsResponseData.responderId;
213 if (rid->type == V_OCSP_RESPID_NAME) {
214 *pname = rid->value.byName;
216 } else if (rid->type == V_OCSP_RESPID_KEY) {
217 *pid = rid->value.byKey;
225 int OCSP_resp_get1_id(const OCSP_BASICRESP *bs,
226 ASN1_OCTET_STRING **pid,
229 const OCSP_RESPID *rid = &bs->tbsResponseData.responderId;
231 if (rid->type == V_OCSP_RESPID_NAME) {
232 *pname = X509_NAME_dup(rid->value.byName);
234 } else if (rid->type == V_OCSP_RESPID_KEY) {
235 *pid = ASN1_OCTET_STRING_dup(rid->value.byKey);
240 if (*pname == NULL && *pid == NULL)
245 /* Look single response matching a given certificate ID */
247 int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
250 STACK_OF(OCSP_SINGLERESP) *sresp;
251 OCSP_SINGLERESP *single;
258 sresp = bs->tbsResponseData.responses;
259 for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++) {
260 single = sk_OCSP_SINGLERESP_value(sresp, i);
261 if (!OCSP_id_cmp(id, single->certId))
268 * Extract status information from an OCSP_SINGLERESP structure. Note: the
269 * revtime and reason values are only set if the certificate status is
270 * revoked. Returns numerical value of status.
273 int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
274 ASN1_GENERALIZEDTIME **revtime,
275 ASN1_GENERALIZEDTIME **thisupd,
276 ASN1_GENERALIZEDTIME **nextupd)
279 OCSP_CERTSTATUS *cst;
282 cst = single->certStatus;
284 if (ret == V_OCSP_CERTSTATUS_REVOKED) {
285 OCSP_REVOKEDINFO *rev = cst->value.revoked;
287 *revtime = rev->revocationTime;
289 if (rev->revocationReason)
290 *reason = ASN1_ENUMERATED_get(rev->revocationReason);
296 *thisupd = single->thisUpdate;
298 *nextupd = single->nextUpdate;
303 * This function combines the previous ones: look up a certificate ID and if
304 * found extract status information. Return 0 is successful.
307 int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
309 ASN1_GENERALIZEDTIME **revtime,
310 ASN1_GENERALIZEDTIME **thisupd,
311 ASN1_GENERALIZEDTIME **nextupd)
314 OCSP_SINGLERESP *single;
315 i = OCSP_resp_find(bs, id, -1);
316 /* Maybe check for multiple responses and give an error? */
319 single = OCSP_resp_get0(bs, i);
320 i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
327 * Check validity of thisUpdate and nextUpdate fields. It is possible that
328 * the request will take a few seconds to process and/or the time won't be
329 * totally accurate. Therefore to avoid rejecting otherwise valid time we
330 * allow the times to be within 'nsec' of the current time. Also to avoid
331 * accepting very old responses without a nextUpdate field an optional maxage
332 * parameter specifies the maximum age the thisUpdate field can be.
335 int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd,
336 ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
341 /* Check thisUpdate is valid and not more than nsec in the future */
342 if (!ASN1_GENERALIZEDTIME_check(thisupd)) {
343 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
346 t_tmp = t_now + nsec;
347 if (X509_cmp_time(thisupd, &t_tmp) > 0) {
348 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
353 * If maxsec specified check thisUpdate is not more than maxsec in
357 t_tmp = t_now - maxsec;
358 if (X509_cmp_time(thisupd, &t_tmp) < 0) {
359 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
368 /* Check nextUpdate is valid and not more than nsec in the past */
369 if (!ASN1_GENERALIZEDTIME_check(nextupd)) {
370 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
373 t_tmp = t_now - nsec;
374 if (X509_cmp_time(nextupd, &t_tmp) < 0) {
375 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
380 /* Also don't allow nextUpdate to precede thisUpdate */
381 if (ASN1_STRING_cmp(nextupd, thisupd) < 0) {
382 OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY,
383 OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
390 const OCSP_CERTID *OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP *single)
392 return single->certId;