/* ocsp_srv.c */

 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

  * project 2001.

  */

 /* ====================================================================

  * Copyright (c) 1998-2001 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 responses and extracting

  * relevant information from the request.

  */

 EXPORT_C int OCSP_request_onereq_count(OCSP_REQUEST *req)

 	{

 	return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList);

 	}

 EXPORT_C OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i)

 	{

 	return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i);

 	}

 EXPORT_C OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one)

 	{

 	return one->reqCert;

 	}

 EXPORT_C int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd,

 			ASN1_OCTET_STRING **pikeyHash,

 			ASN1_INTEGER **pserial, OCSP_CERTID *cid)

 	{

 	if (!cid) return 0;

 	if (pmd) *pmd = cid->hashAlgorithm->algorithm;

 	if(piNameHash) *piNameHash = cid->issuerNameHash;

 	if (pikeyHash) *pikeyHash = cid->issuerKeyHash;

 	if (pserial) *pserial = cid->serialNumber;

 	return 1;

 	}

 EXPORT_C int OCSP_request_is_signed(OCSP_REQUEST *req)

 	{

 	if(req->optionalSignature) return 1;

 	return 0;

 	}

 /* Create an OCSP response and encode an optional basic response */

 EXPORT_C OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs)

         {

         OCSP_RESPONSE *rsp = NULL;

 	if (!(rsp = OCSP_RESPONSE_new())) goto err;

 	if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err;

 	if (!bs) return rsp;

 	if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err;

 	rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic);

 	if (!ASN1_item_pack(bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response))

 				goto err;

 	return rsp;

 err:

 	if (rsp) OCSP_RESPONSE_free(rsp);

 	return NULL;

 	}

 EXPORT_C OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp,

 						OCSP_CERTID *cid,

 						int status, int reason,

 						ASN1_TIME *revtime,

 					ASN1_TIME *thisupd, ASN1_TIME *nextupd)

 	{

 	OCSP_SINGLERESP *single = NULL;

 	OCSP_CERTSTATUS *cs;

 	OCSP_REVOKEDINFO *ri;

 	if(!rsp->tbsResponseData->responses &&

 	    !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null()))

 		goto err;

 	if (!(single = OCSP_SINGLERESP_new()))

 		goto err;

 	if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate))

 		goto err;

 	if (nextupd &&

 		!ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate))

 		goto err;

 	OCSP_CERTID_free(single->certId);

 	if(!(single->certId = OCSP_CERTID_dup(cid)))

 		goto err;

 	cs = single->certStatus;

 	switch(cs->type = status)

 		{

 	case V_OCSP_CERTSTATUS_REVOKED:

 		if (!revtime)

 		        {

 		        OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS,OCSP_R_NO_REVOKED_TIME);

 			goto err;

 		        }

 		if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err;

 		if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime))

 			goto err;	

 		if (reason != OCSP_REVOKED_STATUS_NOSTATUS)

 		        {

 			if (!(ri->revocationReason = ASN1_ENUMERATED_new())) 

 			        goto err;

 			if (!(ASN1_ENUMERATED_set(ri->revocationReason, 

 						  reason)))

 			        goto err;	

 			}

 		break;

 	case V_OCSP_CERTSTATUS_GOOD:

 		cs->value.good = ASN1_NULL_new();

 		break;

 	case V_OCSP_CERTSTATUS_UNKNOWN:

 		cs->value.unknown = ASN1_NULL_new();

 		break;

 	default:

 		goto err;

 		}

 	if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single)))

 		goto err;

 	return single;

 err:

 	OCSP_SINGLERESP_free(single);

 	return NULL;

 	}

 /* Add a certificate to an OCSP request */

 EXPORT_C int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert)

 	{

 	if (!resp->certs && !(resp->certs = sk_X509_new_null()))

 		return 0;

 	if(!sk_X509_push(resp->certs, cert)) return 0;

 	CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);

 	return 1;

 	}

 EXPORT_C int OCSP_basic_sign(OCSP_BASICRESP *brsp, 

 			X509 *signer, EVP_PKEY *key, const EVP_MD *dgst,

 			STACK_OF(X509) *certs, unsigned long flags)

         {

 	int i;

 	OCSP_RESPID *rid;

 	if (!X509_check_private_key(signer, key))

 		{

 		OCSPerr(OCSP_F_OCSP_BASIC_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);

 		goto err;

 		}

 	if(!(flags & OCSP_NOCERTS))

 		{

 		if(!OCSP_basic_add1_cert(brsp, signer))

 			goto err;

 		for (i = 0; i < sk_X509_num(certs); i++)

 			{

 			X509 *tmpcert = sk_X509_value(certs, i);

 			if(!OCSP_basic_add1_cert(brsp, tmpcert))

 				goto err;

 			}

 		}

 	rid = brsp->tbsResponseData->responderId;

 	if (flags & OCSP_RESPID_KEY)

 		{

 		unsigned char md[SHA_DIGEST_LENGTH];

 		X509_pubkey_digest(signer, EVP_sha1(), md, NULL);

 		if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))

 			goto err;

 		if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, SHA_DIGEST_LENGTH)))

 				goto err;

 		rid->type = V_OCSP_RESPID_KEY;

 		}

 	else

 		{

 		if (!X509_NAME_set(&rid->value.byName,

 					X509_get_subject_name(signer)))

 				goto err;

 		rid->type = V_OCSP_RESPID_NAME;

 		}

 	if (!(flags & OCSP_NOTIME) &&

 		!X509_gmtime_adj(brsp->tbsResponseData->producedAt, 0))

 		goto err;

 	/* Right now, I think that not doing double hashing is the right

 	   thing.	-- Richard Levitte */

 	if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err;

 	return 1;

 err:

 	return 0;

 	}