1 /* $OpenBSD: ocsp_srv.c,v 1.12 2022/01/07 09:45:52 tb 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
80 OCSP_ONEREQ *
OCSP_request_onereq_get0(OCSP_REQUEST * req,int i)81 OCSP_request_onereq_get0(OCSP_REQUEST *req, int i)
82 {
83 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i);
84 }
85
86 OCSP_CERTID *
OCSP_onereq_get0_id(OCSP_ONEREQ * one)87 OCSP_onereq_get0_id(OCSP_ONEREQ *one)
88 {
89 return one->reqCert;
90 }
91
92 int
OCSP_id_get0_info(ASN1_OCTET_STRING ** piNameHash,ASN1_OBJECT ** pmd,ASN1_OCTET_STRING ** pikeyHash,ASN1_INTEGER ** pserial,OCSP_CERTID * cid)93 OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd,
94 ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid)
95 {
96 if (!cid)
97 return 0;
98 if (pmd)
99 *pmd = cid->hashAlgorithm->algorithm;
100 if (piNameHash)
101 *piNameHash = cid->issuerNameHash;
102 if (pikeyHash)
103 *pikeyHash = cid->issuerKeyHash;
104 if (pserial)
105 *pserial = cid->serialNumber;
106 return 1;
107 }
108
109 int
OCSP_request_is_signed(OCSP_REQUEST * req)110 OCSP_request_is_signed(OCSP_REQUEST *req)
111 {
112 if (req->optionalSignature)
113 return 1;
114 return 0;
115 }
116
117 /* Create an OCSP response and encode an optional basic response */
118 OCSP_RESPONSE *
OCSP_response_create(int status,OCSP_BASICRESP * bs)119 OCSP_response_create(int status, OCSP_BASICRESP *bs)
120 {
121 OCSP_RESPONSE *rsp = NULL;
122
123 if (!(rsp = OCSP_RESPONSE_new()))
124 goto err;
125 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status)))
126 goto err;
127 if (!bs)
128 return rsp;
129 if (!(rsp->responseBytes = OCSP_RESPBYTES_new()))
130 goto err;
131 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic);
132 if (!ASN1_item_pack(bs, &OCSP_BASICRESP_it,
133 &rsp->responseBytes->response))
134 goto err;
135 return rsp;
136
137 err:
138 if (rsp)
139 OCSP_RESPONSE_free(rsp);
140 return NULL;
141 }
142
143 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)144 OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status,
145 int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd)
146 {
147 OCSP_SINGLERESP *single = NULL;
148 OCSP_CERTSTATUS *cs;
149 OCSP_REVOKEDINFO *ri;
150
151 if (!rsp->tbsResponseData->responses &&
152 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null()))
153 goto err;
154
155 if (!(single = OCSP_SINGLERESP_new()))
156 goto err;
157
158 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate))
159 goto err;
160 if (nextupd &&
161 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate))
162 goto err;
163
164 OCSP_CERTID_free(single->certId);
165
166 if (!(single->certId = OCSP_CERTID_dup(cid)))
167 goto err;
168
169 cs = single->certStatus;
170 switch (cs->type = status) {
171 case V_OCSP_CERTSTATUS_REVOKED:
172 if (!revtime) {
173 OCSPerror(OCSP_R_NO_REVOKED_TIME);
174 goto err;
175 }
176 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new()))
177 goto err;
178 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime))
179 goto err;
180 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) {
181 if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
182 goto err;
183 if (!(ASN1_ENUMERATED_set(ri->revocationReason,
184 reason)))
185 goto err;
186 }
187 break;
188
189 case V_OCSP_CERTSTATUS_GOOD:
190 cs->value.good = ASN1_NULL_new();
191 break;
192
193 case V_OCSP_CERTSTATUS_UNKNOWN:
194 cs->value.unknown = ASN1_NULL_new();
195 break;
196
197 default:
198 goto err;
199 }
200 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single)))
201 goto err;
202 return single;
203
204 err:
205 OCSP_SINGLERESP_free(single);
206 return NULL;
207 }
208
209 /* Add a certificate to an OCSP request */
210 int
OCSP_basic_add1_cert(OCSP_BASICRESP * resp,X509 * cert)211 OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert)
212 {
213 if (!resp->certs && !(resp->certs = sk_X509_new_null()))
214 return 0;
215
216 if (!sk_X509_push(resp->certs, cert))
217 return 0;
218 X509_up_ref(cert);
219 return 1;
220 }
221
222 int
OCSP_basic_sign(OCSP_BASICRESP * brsp,X509 * signer,EVP_PKEY * key,const EVP_MD * dgst,STACK_OF (X509)* certs,unsigned long flags)223 OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key,
224 const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags)
225 {
226 int i;
227 OCSP_RESPID *rid;
228
229 if (!X509_check_private_key(signer, key)) {
230 OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
231 goto err;
232 }
233
234 if (!(flags & OCSP_NOCERTS)) {
235 if (!OCSP_basic_add1_cert(brsp, signer))
236 goto err;
237 for (i = 0; i < sk_X509_num(certs); i++) {
238 X509 *tmpcert = sk_X509_value(certs, i);
239 if (!OCSP_basic_add1_cert(brsp, tmpcert))
240 goto err;
241 }
242 }
243
244 rid = brsp->tbsResponseData->responderId;
245 if (flags & OCSP_RESPID_KEY) {
246 unsigned char md[SHA_DIGEST_LENGTH];
247
248 X509_pubkey_digest(signer, EVP_sha1(), md, NULL);
249 if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
250 goto err;
251 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md,
252 SHA_DIGEST_LENGTH)))
253 goto err;
254 rid->type = V_OCSP_RESPID_KEY;
255 } else {
256 if (!X509_NAME_set(&rid->value.byName,
257 X509_get_subject_name(signer)))
258 goto err;
259 rid->type = V_OCSP_RESPID_NAME;
260 }
261
262 if (!(flags & OCSP_NOTIME) &&
263 !ASN1_GENERALIZEDTIME_set(brsp->tbsResponseData->producedAt, time(NULL)))
264 goto err;
265
266 /* Right now, I think that not doing double hashing is the right
267 thing. -- Richard Levitte */
268
269 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0))
270 goto err;
271
272 return 1;
273
274 err:
275 return 0;
276 }
277