1 /* $OpenBSD: ocsp_srv.c,v 1.10 2017/01/29 17:49:23 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 /* Utility functions related to sending OCSP responses and extracting
69 * relevant information from the request.
70 */
71
72 int
OCSP_request_onereq_count(OCSP_REQUEST * req)73 OCSP_request_onereq_count(OCSP_REQUEST *req)
74 {
75 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList);
76 }
77
78 OCSP_ONEREQ *
OCSP_request_onereq_get0(OCSP_REQUEST * req,int i)79 OCSP_request_onereq_get0(OCSP_REQUEST *req, int i)
80 {
81 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i);
82 }
83
84 OCSP_CERTID *
OCSP_onereq_get0_id(OCSP_ONEREQ * one)85 OCSP_onereq_get0_id(OCSP_ONEREQ *one)
86 {
87 return one->reqCert;
88 }
89
90 int
OCSP_id_get0_info(ASN1_OCTET_STRING ** piNameHash,ASN1_OBJECT ** pmd,ASN1_OCTET_STRING ** pikeyHash,ASN1_INTEGER ** pserial,OCSP_CERTID * cid)91 OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd,
92 ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid)
93 {
94 if (!cid)
95 return 0;
96 if (pmd)
97 *pmd = cid->hashAlgorithm->algorithm;
98 if (piNameHash)
99 *piNameHash = cid->issuerNameHash;
100 if (pikeyHash)
101 *pikeyHash = cid->issuerKeyHash;
102 if (pserial)
103 *pserial = cid->serialNumber;
104 return 1;
105 }
106
107 int
OCSP_request_is_signed(OCSP_REQUEST * req)108 OCSP_request_is_signed(OCSP_REQUEST *req)
109 {
110 if (req->optionalSignature)
111 return 1;
112 return 0;
113 }
114
115 /* Create an OCSP response and encode an optional basic response */
116 OCSP_RESPONSE *
OCSP_response_create(int status,OCSP_BASICRESP * bs)117 OCSP_response_create(int status, OCSP_BASICRESP *bs)
118 {
119 OCSP_RESPONSE *rsp = NULL;
120
121 if (!(rsp = OCSP_RESPONSE_new()))
122 goto err;
123 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status)))
124 goto err;
125 if (!bs)
126 return rsp;
127 if (!(rsp->responseBytes = OCSP_RESPBYTES_new()))
128 goto err;
129 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic);
130 if (!ASN1_item_pack(bs, &OCSP_BASICRESP_it,
131 &rsp->responseBytes->response))
132 goto err;
133 return rsp;
134
135 err:
136 if (rsp)
137 OCSP_RESPONSE_free(rsp);
138 return NULL;
139 }
140
141 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)142 OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status,
143 int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd)
144 {
145 OCSP_SINGLERESP *single = NULL;
146 OCSP_CERTSTATUS *cs;
147 OCSP_REVOKEDINFO *ri;
148
149 if (!rsp->tbsResponseData->responses &&
150 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null()))
151 goto err;
152
153 if (!(single = OCSP_SINGLERESP_new()))
154 goto err;
155
156 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate))
157 goto err;
158 if (nextupd &&
159 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate))
160 goto err;
161
162 OCSP_CERTID_free(single->certId);
163
164 if (!(single->certId = OCSP_CERTID_dup(cid)))
165 goto err;
166
167 cs = single->certStatus;
168 switch (cs->type = status) {
169 case V_OCSP_CERTSTATUS_REVOKED:
170 if (!revtime) {
171 OCSPerror(OCSP_R_NO_REVOKED_TIME);
172 goto err;
173 }
174 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new()))
175 goto err;
176 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime))
177 goto err;
178 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) {
179 if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
180 goto err;
181 if (!(ASN1_ENUMERATED_set(ri->revocationReason,
182 reason)))
183 goto err;
184 }
185 break;
186
187 case V_OCSP_CERTSTATUS_GOOD:
188 cs->value.good = ASN1_NULL_new();
189 break;
190
191 case V_OCSP_CERTSTATUS_UNKNOWN:
192 cs->value.unknown = ASN1_NULL_new();
193 break;
194
195 default:
196 goto err;
197 }
198 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single)))
199 goto err;
200 return single;
201
202 err:
203 OCSP_SINGLERESP_free(single);
204 return NULL;
205 }
206
207 /* Add a certificate to an OCSP request */
208 int
OCSP_basic_add1_cert(OCSP_BASICRESP * resp,X509 * cert)209 OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert)
210 {
211 if (!resp->certs && !(resp->certs = sk_X509_new_null()))
212 return 0;
213
214 if (!sk_X509_push(resp->certs, cert))
215 return 0;
216 CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
217 return 1;
218 }
219
220 int
OCSP_basic_sign(OCSP_BASICRESP * brsp,X509 * signer,EVP_PKEY * key,const EVP_MD * dgst,STACK_OF (X509)* certs,unsigned long flags)221 OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key,
222 const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags)
223 {
224 int i;
225 OCSP_RESPID *rid;
226
227 if (!X509_check_private_key(signer, key)) {
228 OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
229 goto err;
230 }
231
232 if (!(flags & OCSP_NOCERTS)) {
233 if (!OCSP_basic_add1_cert(brsp, signer))
234 goto err;
235 for (i = 0; i < sk_X509_num(certs); i++) {
236 X509 *tmpcert = sk_X509_value(certs, i);
237 if (!OCSP_basic_add1_cert(brsp, tmpcert))
238 goto err;
239 }
240 }
241
242 rid = brsp->tbsResponseData->responderId;
243 if (flags & OCSP_RESPID_KEY) {
244 unsigned char md[SHA_DIGEST_LENGTH];
245
246 X509_pubkey_digest(signer, EVP_sha1(), md, NULL);
247 if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
248 goto err;
249 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md,
250 SHA_DIGEST_LENGTH)))
251 goto err;
252 rid->type = V_OCSP_RESPID_KEY;
253 } else {
254 if (!X509_NAME_set(&rid->value.byName,
255 X509_get_subject_name(signer)))
256 goto err;
257 rid->type = V_OCSP_RESPID_NAME;
258 }
259
260 if (!(flags & OCSP_NOTIME) &&
261 !ASN1_GENERALIZEDTIME_set(brsp->tbsResponseData->producedAt, time(NULL)))
262 goto err;
263
264 /* Right now, I think that not doing double hashing is the right
265 thing. -- Richard Levitte */
266
267 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0))
268 goto err;
269
270 return 1;
271
272 err:
273 return 0;
274 }
275