1 /* $OpenBSD: ocsp_srv.c,v 1.13 2023/07/08 10:44:00 beck Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2001.
4 */
5 /* ====================================================================
6 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <stdio.h>
60
61 #include <openssl/err.h>
62 #include <openssl/objects.h>
63 #include <openssl/ocsp.h>
64 #include <openssl/pem.h>
65 #include <openssl/x509.h>
66 #include <openssl/x509v3.h>
67
68 #include "ocsp_local.h"
69
70 /* Utility functions related to sending OCSP responses and extracting
71 * relevant information from the request.
72 */
73
74 int
OCSP_request_onereq_count(OCSP_REQUEST * req)75 OCSP_request_onereq_count(OCSP_REQUEST *req)
76 {
77 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList);
78 }
79 LCRYPTO_ALIAS(OCSP_request_onereq_count);
80
81 OCSP_ONEREQ *
OCSP_request_onereq_get0(OCSP_REQUEST * req,int i)82 OCSP_request_onereq_get0(OCSP_REQUEST *req, int i)
83 {
84 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i);
85 }
86 LCRYPTO_ALIAS(OCSP_request_onereq_get0);
87
88 OCSP_CERTID *
OCSP_onereq_get0_id(OCSP_ONEREQ * one)89 OCSP_onereq_get0_id(OCSP_ONEREQ *one)
90 {
91 return one->reqCert;
92 }
93 LCRYPTO_ALIAS(OCSP_onereq_get0_id);
94
95 int
OCSP_id_get0_info(ASN1_OCTET_STRING ** piNameHash,ASN1_OBJECT ** pmd,ASN1_OCTET_STRING ** pikeyHash,ASN1_INTEGER ** pserial,OCSP_CERTID * cid)96 OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd,
97 ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid)
98 {
99 if (!cid)
100 return 0;
101 if (pmd)
102 *pmd = cid->hashAlgorithm->algorithm;
103 if (piNameHash)
104 *piNameHash = cid->issuerNameHash;
105 if (pikeyHash)
106 *pikeyHash = cid->issuerKeyHash;
107 if (pserial)
108 *pserial = cid->serialNumber;
109 return 1;
110 }
111 LCRYPTO_ALIAS(OCSP_id_get0_info);
112
113 int
OCSP_request_is_signed(OCSP_REQUEST * req)114 OCSP_request_is_signed(OCSP_REQUEST *req)
115 {
116 if (req->optionalSignature)
117 return 1;
118 return 0;
119 }
120 LCRYPTO_ALIAS(OCSP_request_is_signed);
121
122 /* Create an OCSP response and encode an optional basic response */
123 OCSP_RESPONSE *
OCSP_response_create(int status,OCSP_BASICRESP * bs)124 OCSP_response_create(int status, OCSP_BASICRESP *bs)
125 {
126 OCSP_RESPONSE *rsp = NULL;
127
128 if (!(rsp = OCSP_RESPONSE_new()))
129 goto err;
130 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status)))
131 goto err;
132 if (!bs)
133 return rsp;
134 if (!(rsp->responseBytes = OCSP_RESPBYTES_new()))
135 goto err;
136 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic);
137 if (!ASN1_item_pack(bs, &OCSP_BASICRESP_it,
138 &rsp->responseBytes->response))
139 goto err;
140 return rsp;
141
142 err:
143 if (rsp)
144 OCSP_RESPONSE_free(rsp);
145 return NULL;
146 }
147 LCRYPTO_ALIAS(OCSP_response_create);
148
149 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)150 OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status,
151 int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd)
152 {
153 OCSP_SINGLERESP *single = NULL;
154 OCSP_CERTSTATUS *cs;
155 OCSP_REVOKEDINFO *ri;
156
157 if (!rsp->tbsResponseData->responses &&
158 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null()))
159 goto err;
160
161 if (!(single = OCSP_SINGLERESP_new()))
162 goto err;
163
164 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate))
165 goto err;
166 if (nextupd &&
167 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate))
168 goto err;
169
170 OCSP_CERTID_free(single->certId);
171
172 if (!(single->certId = OCSP_CERTID_dup(cid)))
173 goto err;
174
175 cs = single->certStatus;
176 switch (cs->type = status) {
177 case V_OCSP_CERTSTATUS_REVOKED:
178 if (!revtime) {
179 OCSPerror(OCSP_R_NO_REVOKED_TIME);
180 goto err;
181 }
182 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new()))
183 goto err;
184 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime))
185 goto err;
186 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) {
187 if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
188 goto err;
189 if (!(ASN1_ENUMERATED_set(ri->revocationReason,
190 reason)))
191 goto err;
192 }
193 break;
194
195 case V_OCSP_CERTSTATUS_GOOD:
196 cs->value.good = ASN1_NULL_new();
197 break;
198
199 case V_OCSP_CERTSTATUS_UNKNOWN:
200 cs->value.unknown = ASN1_NULL_new();
201 break;
202
203 default:
204 goto err;
205 }
206 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single)))
207 goto err;
208 return single;
209
210 err:
211 OCSP_SINGLERESP_free(single);
212 return NULL;
213 }
214 LCRYPTO_ALIAS(OCSP_basic_add1_status);
215
216 /* Add a certificate to an OCSP request */
217 int
OCSP_basic_add1_cert(OCSP_BASICRESP * resp,X509 * cert)218 OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert)
219 {
220 if (!resp->certs && !(resp->certs = sk_X509_new_null()))
221 return 0;
222
223 if (!sk_X509_push(resp->certs, cert))
224 return 0;
225 X509_up_ref(cert);
226 return 1;
227 }
228 LCRYPTO_ALIAS(OCSP_basic_add1_cert);
229
230 int
OCSP_basic_sign(OCSP_BASICRESP * brsp,X509 * signer,EVP_PKEY * key,const EVP_MD * dgst,STACK_OF (X509)* certs,unsigned long flags)231 OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key,
232 const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags)
233 {
234 int i;
235 OCSP_RESPID *rid;
236
237 if (!X509_check_private_key(signer, key)) {
238 OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
239 goto err;
240 }
241
242 if (!(flags & OCSP_NOCERTS)) {
243 if (!OCSP_basic_add1_cert(brsp, signer))
244 goto err;
245 for (i = 0; i < sk_X509_num(certs); i++) {
246 X509 *tmpcert = sk_X509_value(certs, i);
247 if (!OCSP_basic_add1_cert(brsp, tmpcert))
248 goto err;
249 }
250 }
251
252 rid = brsp->tbsResponseData->responderId;
253 if (flags & OCSP_RESPID_KEY) {
254 unsigned char md[SHA_DIGEST_LENGTH];
255
256 X509_pubkey_digest(signer, EVP_sha1(), md, NULL);
257 if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
258 goto err;
259 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md,
260 SHA_DIGEST_LENGTH)))
261 goto err;
262 rid->type = V_OCSP_RESPID_KEY;
263 } else {
264 if (!X509_NAME_set(&rid->value.byName,
265 X509_get_subject_name(signer)))
266 goto err;
267 rid->type = V_OCSP_RESPID_NAME;
268 }
269
270 if (!(flags & OCSP_NOTIME) &&
271 !ASN1_GENERALIZEDTIME_set(brsp->tbsResponseData->producedAt, time(NULL)))
272 goto err;
273
274 /* Right now, I think that not doing double hashing is the right
275 thing. -- Richard Levitte */
276
277 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0))
278 goto err;
279
280 return 1;
281
282 err:
283 return 0;
284 }
285 LCRYPTO_ALIAS(OCSP_basic_sign);
286