[thirdparty/openssl.git] / crypto / ocsp / ocsp_cl.c

/* ocsp_cl.c */
/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
 * project. */

/* History:
   This file was transfered to Richard Levitte from CertCo by Kathy
   Weinhold in mid-spring 2000 to be included in OpenSSL or released
   as a patch kit. */

/* ====================================================================
 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include <cryptlib.h>
#include <openssl/objects.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/ocsp.h>

/* Utility functions related to sending OCSP requests and extracting
 * relevant information from the response.
 */

/* Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ 
 * pointer: useful if we want to add extensions.
 */

OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
        {
	OCSP_ONEREQ *one = NULL;

	if (!(one = OCSP_ONEREQ_new())) goto err;
	if (one->reqCert) OCSP_CERTID_free(one->reqCert);
	one->reqCert = cid;
	if (req &&
		!sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one))
				goto err;
	return one;
err:
	OCSP_ONEREQ_free(one);
	return NULL;
        }

/* Set requestorName from an X509_NAME structure */

int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
	{
	GENERAL_NAME *gen;
	gen = GENERAL_NAME_new();
	if (!X509_NAME_set(&gen->d.directoryName, nm))
		{
		GENERAL_NAME_free(gen);
		return 0;
		}
	gen->type = GEN_DIRNAME;
	if (req->tbsRequest->requestorName)
		GENERAL_NAME_free(req->tbsRequest->requestorName);
	req->tbsRequest->requestorName = gen;
	return 1;
	}
	

/* Add a certificate to an OCSP request */

int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
	{
	OCSP_SIGNATURE *sig;
	if (!req->optionalSignature)
		req->optionalSignature = OCSP_SIGNATURE_new();
	sig = req->optionalSignature;
	if (!sig) return 0;
	if (!cert) return 1;
	if (!sig->certs && !(sig->certs = sk_X509_new_null()))
		return 0;

	if(!sk_X509_push(sig->certs, cert)) return 0;
	CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
	return 1;
	}

/* Sign an OCSP request set the requestorName to the subjec
 * name of an optional signers certificate and include one
 * or more optional certificates in the request. Behaves
 * like PKCS7_sign().
 */

int OCSP_request_sign(OCSP_REQUEST   *req,
		      X509           *signer,
		      EVP_PKEY       *key,
		      const EVP_MD   *dgst,
		      STACK_OF(X509) *certs,
		      unsigned long flags)
        {
	int i;
	OCSP_SIGNATURE *sig;
	X509 *x;

	if (signer &&
		!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
			goto err;

	if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) goto err;
	if (!dgst) dgst = EVP_sha1();
	if (key && !OCSP_REQUEST_sign(req, key, dgst)) goto err;
	if (!(flags & OCSP_NOCERTS))
		{
		if (!OCSP_request_add1_cert(req, signer)) goto err;
	        for (i = 0; i < sk_X509_num(certs); i++)
			{
			x = sk_X509_value(certs, i);
			if (!OCSP_request_add1_cert(req, x)) goto err;
			}
		}
	return 1;
err:
	OCSP_SIGNATURE_free(req->optionalSignature);
	req->optionalSignature = NULL;
	return 0;
	}

/* Get response status */

int OCSP_response_status(OCSP_RESPONSE *resp)
	{
	return ASN1_ENUMERATED_get(resp->responseStatus);
	}

/* Extract basic response from OCSP_RESPONSE or NULL if
 * no basic response present.
 */
 

OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp)
	{
	OCSP_RESPBYTES *rb;
	rb = resp->responseBytes;
	if (!rb)
		{
		OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
		return NULL;
		}
	if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
		{
		OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
		return NULL;
		}

	return ASN1_item_unpack(rb->response, &OCSP_BASICRESP_it);
	}

/* Return number of OCSP_SINGLERESP reponses present in
 * a basic response.
 */

int OCSP_resp_count(OCSP_BASICRESP *bs)
	{
	if (!bs) return -1;
	return sk_OCSP_SINGLERESP_num(bs->tbsResponseData->responses);
	}

/* Extract an OCSP_SINGLERESP response with a given index */

OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
	{
	if (!bs) return NULL;
	return sk_OCSP_SINGLERESP_value(bs->tbsResponseData->responses, idx);
	}

/* Look single response matching a given certificate ID */

int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
	{
	int i;
	STACK_OF(OCSP_SINGLERESP) *sresp;
	OCSP_SINGLERESP *single;
	if (!bs) return -1;
	if (last < 0) last = 0;
	else last++;
	sresp = bs->tbsResponseData->responses;
	for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++)
		{
		single = sk_OCSP_SINGLERESP_value(sresp, i);
		if (!OCSP_id_cmp(id, single->certId)) return i;
		}
	return -1;
	}

/* Extract status information from an OCSP_SINGLERESP structure.
 * Note: the revtime and reason values are only set if the 
 * certificate status is revoked. Returns numerical value of
 * status.
 */

int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
				ASN1_GENERALIZEDTIME **revtime,
				ASN1_GENERALIZEDTIME **thisupd,
				ASN1_GENERALIZEDTIME **nextupd)
	{
	int ret;
	OCSP_CERTSTATUS *cst = single->certStatus;
	if(!single) return -1;
	ret = cst->type;
	if (ret == V_OCSP_CERTSTATUS_REVOKED)
		{
		OCSP_REVOKEDINFO *rev = cst->value.revoked;
		if (revtime) *revtime = rev->revocationTime;
		if (reason) 
			{
			if(rev->revocationReason)
				*reason = ASN1_ENUMERATED_get(rev->revocationReason);
			else *reason = -1;
			}
		}
	if(thisupd) *thisupd = single->thisUpdate;
	if(nextupd) *nextupd = single->nextUpdate;
	return ret;
	}

/* This function combines the previous ones: look a certificate ID and
 * if found extract status information. Return 0 is successful.
 */

int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
				int *reason,
				ASN1_GENERALIZEDTIME **revtime,
				ASN1_GENERALIZEDTIME **thisupd,
				ASN1_GENERALIZEDTIME **nextupd)
	{
	int i;
	OCSP_SINGLERESP *single;
	i = OCSP_resp_find(bs, id, -1);
	/* Maybe check for multiple responses and give an error? */
	if(i < 0) return 0;
	single = OCSP_resp_get0(bs, i);
	i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
	if(reason) *reason = i;
	return 1;
	}
Commit	Line	Data
0b33bc65 DSH	1	/* ocsp_cl.c */
	2	/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
	3	* project. */
	4
	5	/* History:
	6	This file was transfered to Richard Levitte from CertCo by Kathy
	7	Weinhold in mid-spring 2000 to be included in OpenSSL or released
	8	as a patch kit. */
	9
	10	/* ====================================================================
	11	* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
	12	*
	13	* Redistribution and use in source and binary forms, with or without
	14	* modification, are permitted provided that the following conditions
	15	* are met:
	16	*
	17	* 1. Redistributions of source code must retain the above copyright
	18	* notice, this list of conditions and the following disclaimer.
	19	*
	20	* 2. Redistributions in binary form must reproduce the above copyright
	21	* notice, this list of conditions and the following disclaimer in
	22	* the documentation and/or other materials provided with the
	23	* distribution.
	24	*
	25	* 3. All advertising materials mentioning features or use of this
	26	* software must display the following acknowledgment:
	27	* "This product includes software developed by the OpenSSL Project
	28	* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
	29	*
	30	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	31	* endorse or promote products derived from this software without
	32	* prior written permission. For written permission, please contact
	33	* openssl-core@openssl.org.
	34	*
	35	* 5. Products derived from this software may not be called "OpenSSL"
	36	* nor may "OpenSSL" appear in their names without prior written
	37	* permission of the OpenSSL Project.
	38	*
	39	* 6. Redistributions of any form whatsoever must retain the following
	40	* acknowledgment:
	41	* "This product includes software developed by the OpenSSL Project
	42	* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	45	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	47	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	48	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	49	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	50	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	51	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	53	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	54	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	55	* OF THE POSSIBILITY OF SUCH DAMAGE.
	56	* ====================================================================
	57	*
	58	* This product includes cryptographic software written by Eric Young
	59	* (eay@cryptsoft.com). This product includes software written by Tim
	60	* Hudson (tjh@cryptsoft.com).
	61	*
	62	*/
	63
	64	#include <stdio.h>
65	#include <cryptlib.h>
66	#include <openssl/objects.h>
67	#include <openssl/rand.h>
68	#include <openssl/x509.h>
69	#include <openssl/pem.h>
70	#include <openssl/x509v3.h>
71	#include <openssl/ocsp.h>
72
73	/* Utility functions related to sending OCSP requests and extracting
74	* relevant information from the response.
75	*/
76
77	/* Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ
78	* pointer: useful if we want to add extensions.
79	*/
80
81	OCSP_ONEREQ OCSP_request_add0_id(OCSP_REQUEST req, OCSP_CERTID *cid)
82	{
83	OCSP_ONEREQ *one = NULL;
84
85	if (!(one = OCSP_ONEREQ_new())) goto err;
86	if (one->reqCert) OCSP_CERTID_free(one->reqCert);
87	one->reqCert = cid;
88	if (req &&
89	!sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one))
90	goto err;
91	return one;
92	err:
93	OCSP_ONEREQ_free(one);
94	return NULL;
95	}
96
97	/* Set requestorName from an X509_NAME structure */
98
99	int OCSP_request_set1_name(OCSP_REQUEST req, X509_NAME nm)
100	{
101	GENERAL_NAME *gen;
102	gen = GENERAL_NAME_new();
103	if (!X509_NAME_set(&gen->d.directoryName, nm))
104	{
105	GENERAL_NAME_free(gen);
106	return 0;
107	}
108	gen->type = GEN_DIRNAME;
109	if (req->tbsRequest->requestorName)
110	GENERAL_NAME_free(req->tbsRequest->requestorName);
111	req->tbsRequest->requestorName = gen;
112	return 1;
113	}
114
115
116	/* Add a certificate to an OCSP request */
117
118	int OCSP_request_add1_cert(OCSP_REQUEST req, X509 cert)
119	{
120	OCSP_SIGNATURE *sig;
121	if (!req->optionalSignature)
122	req->optionalSignature = OCSP_SIGNATURE_new();
123	sig = req->optionalSignature;
124	if (!sig) return 0;
125	if (!cert) return 1;
126	if (!sig->certs && !(sig->certs = sk_X509_new_null()))
127	return 0;
128
129	if(!sk_X509_push(sig->certs, cert)) return 0;
130	CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
131	return 1;
132	}
133
134	/* Sign an OCSP request set the requestorName to the subjec
135	* name of an optional signers certificate and include one
136	* or more optional certificates in the request. Behaves
137	* like PKCS7_sign().
138	*/
139
140	int OCSP_request_sign(OCSP_REQUEST *req,
141	X509 *signer,
142	EVP_PKEY *key,
143	const EVP_MD *dgst,
144	STACK_OF(X509) *certs,
145	unsigned long flags)
146	{
147	int i;
148	OCSP_SIGNATURE *sig;
149	X509 *x;
150
151	if (signer &&
152	!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
153	goto err;
154
155	if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) goto err;
156	if (!dgst) dgst = EVP_sha1();
157	if (key && !OCSP_REQUEST_sign(req, key, dgst)) goto err;
158	if (!(flags & OCSP_NOCERTS))
159	{
160	if (!OCSP_request_add1_cert(req, signer)) goto err;
161	for (i = 0; i < sk_X509_num(certs); i++)
162	{
163	x = sk_X509_value(certs, i);
164	if (!OCSP_request_add1_cert(req, x)) goto err;
165	}
166	}
167	return 1;
168	err:
169	OCSP_SIGNATURE_free(req->optionalSignature);
170	req->optionalSignature = NULL;
171	return 0;
172	}
173
174	/* Get response status */
175
176	int OCSP_response_status(OCSP_RESPONSE *resp)
177	{
178	return ASN1_ENUMERATED_get(resp->responseStatus);
179	}
180
181	/* Extract basic response from OCSP_RESPONSE or NULL if
182	* no basic response present.
183	*/
184
185
186	OCSP_BASICRESP OCSP_response_get1_basic(OCSP_RESPONSE resp)
187	{
188	OCSP_RESPBYTES *rb;
189	rb = resp->responseBytes;
190	if (!rb)
191	{
192	OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
193	return NULL;
194	}
195	if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
196	{
197	OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
198	return NULL;
199	}
200
201	return ASN1_item_unpack(rb->response, &OCSP_BASICRESP_it);
202	}
203
204	/* Return number of OCSP_SINGLERESP reponses present in
205	* a basic response.
206	*/
207
208	int OCSP_resp_count(OCSP_BASICRESP *bs)
209	{
210	if (!bs) return -1;
211	return sk_OCSP_SINGLERESP_num(bs->tbsResponseData->responses);
212	}
213
214	/* Extract an OCSP_SINGLERESP response with a given index */
215
216	OCSP_SINGLERESP OCSP_resp_get0(OCSP_BASICRESP bs, int idx)
217	{
218	if (!bs) return NULL;
219	return sk_OCSP_SINGLERESP_value(bs->tbsResponseData->responses, idx);
220	}
221
222	/* Look single response matching a given certificate ID */
223
224	int OCSP_resp_find(OCSP_BASICRESP bs, OCSP_CERTID id, int last)
225	{
226	int i;
227	STACK_OF(OCSP_SINGLERESP) *sresp;
228	OCSP_SINGLERESP *single;
229	if (!bs) return -1;
230	if (last < 0) last = 0;
231	else last++;
232	sresp = bs->tbsResponseData->responses;
233	for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++)
234	{
235	single = sk_OCSP_SINGLERESP_value(sresp, i);
236	if (!OCSP_id_cmp(id, single->certId)) return i;
237	}
238	return -1;
239	}
240
241	/* Extract status information from an OCSP_SINGLERESP structure.
242	* Note: the revtime and reason values are only set if the
243	* certificate status is revoked. Returns numerical value of
244	* status.
245	*/
246
247	int OCSP_single_get0_status(OCSP_SINGLERESP single, int reason,
248	ASN1_GENERALIZEDTIME **revtime,
249	ASN1_GENERALIZEDTIME **thisupd,
250	ASN1_GENERALIZEDTIME **nextupd)
251	{
252	int ret;
253	OCSP_CERTSTATUS *cst = single->certStatus;
254	if(!single) return -1;
255	ret = cst->type;
256	if (ret == V_OCSP_CERTSTATUS_REVOKED)
257	{
258	OCSP_REVOKEDINFO *rev = cst->value.revoked;
259	if (revtime) *revtime = rev->revocationTime;
260	if (reason)
261	{
262	if(rev->revocationReason)
263	*reason = ASN1_ENUMERATED_get(rev->revocationReason);
264	else *reason = -1;
265	}
266	}
267	if(thisupd) *thisupd = single->thisUpdate;
268	if(nextupd) *nextupd = single->nextUpdate;
269	return ret;
270	}
271
272	/* This function combines the previous ones: look a certificate ID and
273	* if found extract status information. Return 0 is successful.
274	*/
275
276	int OCSP_resp_find_status(OCSP_BASICRESP bs, OCSP_CERTID id, int *status,
277	int *reason,
278	ASN1_GENERALIZEDTIME **revtime,
279	ASN1_GENERALIZEDTIME **thisupd,
280	ASN1_GENERALIZEDTIME **nextupd)
281	{
282	int i;
283	OCSP_SINGLERESP *single;
284	i = OCSP_resp_find(bs, id, -1);
285	/* Maybe check for multiple responses and give an error? */
286	if(i < 0) return 0;
287	single = OCSP_resp_get0(bs, i);
288	i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
289	if(reason) *reason = i;
290	return 1;
291	}