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1 | /* ocsp_srv.c */ | |
2 | /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 | #include <cryptlib.h> | |
61 | #include <openssl/objects.h> | |
62 | #include <openssl/rand.h> | |
63 | #include <openssl/x509.h> | |
64 | #include <openssl/pem.h> | |
65 | #include <openssl/x509v3.h> | |
66 | #include <openssl/ocsp.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 | { | |
74 | return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); | |
75 | } | |
76 | ||
77 | OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) | |
78 | { | |
79 | return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); | |
80 | } | |
81 | ||
82 | OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one) | |
83 | { | |
84 | return one->reqCert; | |
85 | } | |
86 | ||
87 | int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, | |
88 | ASN1_OCTET_STRING **pikeyHash, | |
89 | ASN1_INTEGER **pserial, OCSP_CERTID *cid) | |
90 | { | |
91 | if (!cid) return 0; | |
92 | if (pmd) *pmd = cid->hashAlgorithm->algorithm; | |
93 | if(piNameHash) *piNameHash = cid->issuerNameHash; | |
94 | if (pikeyHash) *pikeyHash = cid->issuerKeyHash; | |
95 | if (pserial) *pserial = cid->serialNumber; | |
96 | return 1; | |
97 | } | |
98 | ||
99 | /* Create an OCSP response and encode an optional basic response */ | |
100 | OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs) | |
101 | { | |
102 | OCSP_RESPONSE *rsp = NULL; | |
103 | ||
104 | if (!(rsp = OCSP_RESPONSE_new())) goto err; | |
105 | if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err; | |
106 | if (!bs) return rsp; | |
107 | if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err; | |
108 | rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); | |
109 | if (!ASN1_item_pack(bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response)) | |
110 | goto err; | |
111 | return rsp; | |
112 | err: | |
113 | if (rsp) OCSP_RESPONSE_free(rsp); | |
114 | return NULL; | |
115 | } | |
116 | ||
117 | ||
118 | OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, | |
119 | OCSP_CERTID *cid, | |
120 | int status, int reason, | |
121 | ASN1_TIME *revtime, | |
122 | ASN1_TIME *thisupd, ASN1_TIME *nextupd) | |
123 | { | |
124 | OCSP_SINGLERESP *single = NULL; | |
125 | OCSP_CERTSTATUS *cs; | |
126 | OCSP_REVOKEDINFO *ri; | |
127 | ||
128 | if(!rsp->tbsResponseData->responses && | |
129 | !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) | |
130 | goto err; | |
131 | ||
132 | if (!(single = OCSP_SINGLERESP_new())) | |
133 | goto err; | |
134 | ||
135 | ||
136 | ||
137 | if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) | |
138 | goto err; | |
139 | if (nextupd && | |
140 | !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) | |
141 | goto err; | |
142 | ||
143 | OCSP_CERTID_free(single->certId); | |
144 | ||
145 | if(!(single->certId = OCSP_CERTID_dup(cid))) | |
146 | goto err; | |
147 | ||
148 | cs = single->certStatus; | |
149 | switch(cs->type = status) | |
150 | { | |
151 | case V_OCSP_CERTSTATUS_REVOKED: | |
152 | if (!revtime) | |
153 | { | |
154 | OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS,OCSP_R_NO_REVOKED_TIME); | |
155 | goto err; | |
156 | } | |
157 | if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err; | |
158 | if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) | |
159 | goto err; | |
160 | if (reason != OCSP_REVOKED_STATUS_NOSTATUS) | |
161 | { | |
162 | if (!(ri->revocationReason = ASN1_ENUMERATED_new())) | |
163 | goto err; | |
164 | if (!(ASN1_ENUMERATED_set(ri->revocationReason, | |
165 | reason))) | |
166 | goto err; | |
167 | } | |
168 | break; | |
169 | ||
170 | case V_OCSP_CERTSTATUS_GOOD: | |
171 | cs->value.good = ASN1_NULL_new(); | |
172 | break; | |
173 | ||
174 | case V_OCSP_CERTSTATUS_UNKNOWN: | |
175 | cs->value.unknown = ASN1_NULL_new(); | |
176 | break; | |
177 | ||
178 | default: | |
179 | goto err; | |
180 | ||
181 | } | |
182 | if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) | |
183 | goto err; | |
184 | return single; | |
185 | err: | |
186 | OCSP_SINGLERESP_free(single); | |
187 | return NULL; | |
188 | } | |
189 | ||
190 | /* Add a certificate to an OCSP request */ | |
191 | ||
192 | int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) | |
193 | { | |
194 | if (!resp->certs && !(resp->certs = sk_X509_new_null())) | |
195 | return 0; | |
196 | ||
197 | if(!sk_X509_push(resp->certs, cert)) return 0; | |
198 | CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509); | |
199 | return 1; | |
200 | } | |
201 | ||
202 | int OCSP_basic_sign(OCSP_BASICRESP *brsp, | |
203 | X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, | |
204 | STACK_OF(X509) *certs, unsigned long flags) | |
205 | { | |
206 | int i; | |
207 | OCSP_RESPID *rid; | |
208 | ||
209 | if (!X509_check_private_key(signer, key)) | |
210 | { | |
211 | OCSPerr(OCSP_F_OCSP_BASIC_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
212 | goto err; | |
213 | } | |
214 | ||
215 | if(!(flags & OCSP_NOCERTS)) | |
216 | { | |
217 | if(!OCSP_basic_add1_cert(brsp, signer)) | |
218 | goto err; | |
219 | for (i = 0; i < sk_X509_num(certs); i++) | |
220 | { | |
221 | X509 *tmpcert = sk_X509_value(certs, i); | |
222 | if(!OCSP_basic_add1_cert(brsp, tmpcert)) | |
223 | goto err; | |
224 | } | |
225 | } | |
226 | ||
227 | rid = brsp->tbsResponseData->responderId; | |
228 | if (flags & OCSP_RESPID_KEY) | |
229 | { | |
230 | unsigned char md[SHA_DIGEST_LENGTH]; | |
231 | X509_pubkey_digest(signer, EVP_sha1(), md, NULL); | |
232 | if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) | |
233 | goto err; | |
234 | if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, SHA_DIGEST_LENGTH))) | |
235 | goto err; | |
236 | rid->type = V_OCSP_RESPID_KEY; | |
237 | } | |
238 | else | |
239 | { | |
240 | if (!X509_NAME_set(&rid->value.byName, | |
241 | X509_get_subject_name(signer))) | |
242 | goto err; | |
243 | rid->type = V_OCSP_RESPID_NAME; | |
244 | } | |
245 | ||
246 | if (!(flags & OCSP_NOTIME) && | |
247 | !X509_gmtime_adj(brsp->tbsResponseData->producedAt, 0)) | |
248 | goto err; | |
249 | ||
250 | /* Right now, I think that not doing double hashing is the right | |
251 | thing. -- Richard Levitte */ | |
252 | ||
253 | if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err; | |
254 | ||
255 | return 1; | |
256 | err: | |
257 | return 0; | |
258 | } |