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
)) {
39 one
->reqCert
= NULL
; /* do not free on error */
44 OCSP_ONEREQ_free(one
);
48 /* Set requestorName from an X509_NAME structure */
50 int OCSP_request_set1_name(OCSP_REQUEST
*req
, X509_NAME
*nm
)
54 gen
= GENERAL_NAME_new();
57 if (!X509_NAME_set(&gen
->d
.directoryName
, nm
)) {
58 GENERAL_NAME_free(gen
);
61 gen
->type
= GEN_DIRNAME
;
62 GENERAL_NAME_free(req
->tbsRequest
.requestorName
);
63 req
->tbsRequest
.requestorName
= gen
;
67 /* Add a certificate to an OCSP request */
69 int OCSP_request_add1_cert(OCSP_REQUEST
*req
, X509
*cert
)
72 if (req
->optionalSignature
== NULL
)
73 req
->optionalSignature
= OCSP_SIGNATURE_new();
74 sig
= req
->optionalSignature
;
79 if (sig
->certs
== NULL
80 && (sig
->certs
= sk_X509_new_null()) == NULL
)
83 if (!sk_X509_push(sig
->certs
, cert
))
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().
95 int OCSP_request_sign(OCSP_REQUEST
*req
,
99 STACK_OF(X509
) *certs
, unsigned long flags
)
104 if (!OCSP_request_set1_name(req
, X509_get_subject_name(signer
)))
107 if ((req
->optionalSignature
= OCSP_SIGNATURE_new()) == NULL
)
110 if (!X509_check_private_key(signer
, key
)) {
111 OCSPerr(OCSP_F_OCSP_REQUEST_SIGN
,
112 OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
115 if (!OCSP_REQUEST_sign(req
, key
, dgst
))
119 if (!(flags
& OCSP_NOCERTS
)) {
120 if (!OCSP_request_add1_cert(req
, signer
))
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
))
131 OCSP_SIGNATURE_free(req
->optionalSignature
);
132 req
->optionalSignature
= NULL
;
136 /* Get response status */
138 int OCSP_response_status(OCSP_RESPONSE
*resp
)
140 return ASN1_ENUMERATED_get(resp
->responseStatus
);
144 * Extract basic response from OCSP_RESPONSE or NULL if no basic response
148 OCSP_BASICRESP
*OCSP_response_get1_basic(OCSP_RESPONSE
*resp
)
151 rb
= resp
->responseBytes
;
153 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC
, OCSP_R_NO_RESPONSE_DATA
);
156 if (OBJ_obj2nid(rb
->responseType
) != NID_id_pkix_OCSP_basic
) {
157 OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC
, OCSP_R_NOT_BASIC_RESPONSE
);
161 return ASN1_item_unpack(rb
->response
, ASN1_ITEM_rptr(OCSP_BASICRESP
));
164 const ASN1_OCTET_STRING
*OCSP_resp_get0_signature(const OCSP_BASICRESP
*bs
)
166 return bs
->signature
;
170 * Return number of OCSP_SINGLERESP responses present in a basic response.
173 int OCSP_resp_count(OCSP_BASICRESP
*bs
)
177 return sk_OCSP_SINGLERESP_num(bs
->tbsResponseData
.responses
);
180 /* Extract an OCSP_SINGLERESP response with a given index */
182 OCSP_SINGLERESP
*OCSP_resp_get0(OCSP_BASICRESP
*bs
, int idx
)
186 return sk_OCSP_SINGLERESP_value(bs
->tbsResponseData
.responses
, idx
);
189 const ASN1_GENERALIZEDTIME
*OCSP_resp_get0_produced_at(const OCSP_BASICRESP
* bs
)
191 return bs
->tbsResponseData
.producedAt
;
194 const STACK_OF(X509
) *OCSP_resp_get0_certs(const OCSP_BASICRESP
*bs
)
199 int OCSP_resp_get0_id(const OCSP_BASICRESP
*bs
,
200 const ASN1_OCTET_STRING
**pid
,
201 const X509_NAME
**pname
)
204 const OCSP_RESPID
*rid
= &bs
->tbsResponseData
.responderId
;
205 if (rid
->type
== V_OCSP_RESPID_NAME
) {
206 *pname
= rid
->value
.byName
;
208 } else if (rid
->type
== V_OCSP_RESPID_KEY
) {
209 *pid
= rid
->value
.byKey
;
217 /* Look single response matching a given certificate ID */
219 int OCSP_resp_find(OCSP_BASICRESP
*bs
, OCSP_CERTID
*id
, int last
)
222 STACK_OF(OCSP_SINGLERESP
) *sresp
;
223 OCSP_SINGLERESP
*single
;
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
))
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.
245 int OCSP_single_get0_status(OCSP_SINGLERESP
*single
, int *reason
,
246 ASN1_GENERALIZEDTIME
**revtime
,
247 ASN1_GENERALIZEDTIME
**thisupd
,
248 ASN1_GENERALIZEDTIME
**nextupd
)
251 OCSP_CERTSTATUS
*cst
;
254 cst
= single
->certStatus
;
256 if (ret
== V_OCSP_CERTSTATUS_REVOKED
) {
257 OCSP_REVOKEDINFO
*rev
= cst
->value
.revoked
;
259 *revtime
= rev
->revocationTime
;
261 if (rev
->revocationReason
)
262 *reason
= ASN1_ENUMERATED_get(rev
->revocationReason
);
268 *thisupd
= single
->thisUpdate
;
270 *nextupd
= single
->nextUpdate
;
275 * This function combines the previous ones: look up a certificate ID and if
276 * found extract status information. Return 0 is successful.
279 int OCSP_resp_find_status(OCSP_BASICRESP
*bs
, OCSP_CERTID
*id
, int *status
,
281 ASN1_GENERALIZEDTIME
**revtime
,
282 ASN1_GENERALIZEDTIME
**thisupd
,
283 ASN1_GENERALIZEDTIME
**nextupd
)
286 OCSP_SINGLERESP
*single
;
287 i
= OCSP_resp_find(bs
, id
, -1);
288 /* Maybe check for multiple responses and give an error? */
291 single
= OCSP_resp_get0(bs
, i
);
292 i
= OCSP_single_get0_status(single
, reason
, revtime
, thisupd
, nextupd
);
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.
307 int OCSP_check_validity(ASN1_GENERALIZEDTIME
*thisupd
,
308 ASN1_GENERALIZEDTIME
*nextupd
, long nsec
, long maxsec
)
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
);
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
);
325 * If maxsec specified check thisUpdate is not more than maxsec in
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
);
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
);
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
);
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
);
362 const OCSP_CERTID
*OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP
*single
)
364 return single
->certId
;