File: | src/lib/libcrypto/ocsp/ocsp_cl.c |
Warning: | line 161, column 33 Although the value stored to 'sig' is used in the enclosing expression, the value is never actually read from 'sig' |
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1 | /* $OpenBSD: ocsp_cl.c,v 1.21 2022/01/07 09:45:52 tb Exp $ */ |
2 | /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL |
3 | * project. */ |
4 | |
5 | /* History: |
6 | This file was transfered to Richard Levitte from CertCo by Kathy |
7 | Weinhold in mid-spring 2000 to be included in OpenSSL or released |
8 | as a patch kit. */ |
9 | |
10 | /* ==================================================================== |
11 | * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. |
12 | * |
13 | * Redistribution and use in source and binary forms, with or without |
14 | * modification, are permitted provided that the following conditions |
15 | * are met: |
16 | * |
17 | * 1. Redistributions of source code must retain the above copyright |
18 | * notice, this list of conditions and the following disclaimer. |
19 | * |
20 | * 2. Redistributions in binary form must reproduce the above copyright |
21 | * notice, this list of conditions and the following disclaimer in |
22 | * the documentation and/or other materials provided with the |
23 | * distribution. |
24 | * |
25 | * 3. All advertising materials mentioning features or use of this |
26 | * software must display the following acknowledgment: |
27 | * "This product includes software developed by the OpenSSL Project |
28 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
29 | * |
30 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
31 | * endorse or promote products derived from this software without |
32 | * prior written permission. For written permission, please contact |
33 | * openssl-core@openssl.org. |
34 | * |
35 | * 5. Products derived from this software may not be called "OpenSSL" |
36 | * nor may "OpenSSL" appear in their names without prior written |
37 | * permission of the OpenSSL Project. |
38 | * |
39 | * 6. Redistributions of any form whatsoever must retain the following |
40 | * acknowledgment: |
41 | * "This product includes software developed by the OpenSSL Project |
42 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
43 | * |
44 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
45 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
47 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
48 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
49 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
50 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
51 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
52 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
53 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
54 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
55 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
56 | * ==================================================================== |
57 | * |
58 | * This product includes cryptographic software written by Eric Young |
59 | * (eay@cryptsoft.com). This product includes software written by Tim |
60 | * Hudson (tjh@cryptsoft.com). |
61 | * |
62 | */ |
63 | |
64 | #include <stdio.h> |
65 | #include <time.h> |
66 | |
67 | #include <openssl/err.h> |
68 | #include <openssl/ocsp.h> |
69 | #include <openssl/objects.h> |
70 | #include <openssl/pem.h> |
71 | #include <openssl/x509.h> |
72 | #include <openssl/x509v3.h> |
73 | |
74 | #include "ocsp_local.h" |
75 | |
76 | /* Utility functions related to sending OCSP requests and extracting |
77 | * relevant information from the response. |
78 | */ |
79 | |
80 | /* Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ |
81 | * pointer: useful if we want to add extensions. |
82 | */ |
83 | OCSP_ONEREQ * |
84 | OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid) |
85 | { |
86 | OCSP_ONEREQ *one; |
87 | |
88 | if ((one = OCSP_ONEREQ_new()) == NULL((void*)0)) |
89 | goto err; |
90 | if (req != NULL((void*)0)) { |
91 | if (!sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one)sk_push(((_STACK*) (1 ? (req->tbsRequest->requestList) : (struct stack_st_OCSP_ONEREQ*)0)), ((void*) (1 ? (one) : (OCSP_ONEREQ *)0)))) |
92 | goto err; |
93 | } |
94 | OCSP_CERTID_free(one->reqCert); |
95 | one->reqCert = cid; |
96 | return one; |
97 | |
98 | err: |
99 | OCSP_ONEREQ_free(one); |
100 | return NULL((void*)0); |
101 | } |
102 | |
103 | /* Set requestorName from an X509_NAME structure */ |
104 | int |
105 | OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm) |
106 | { |
107 | GENERAL_NAME *gen; |
108 | |
109 | gen = GENERAL_NAME_new(); |
110 | if (gen == NULL((void*)0)) |
111 | return 0; |
112 | if (!X509_NAME_set(&gen->d.directoryName, nm)) { |
113 | GENERAL_NAME_free(gen); |
114 | return 0; |
115 | } |
116 | gen->type = GEN_DIRNAME4; |
117 | if (req->tbsRequest->requestorName) |
118 | GENERAL_NAME_free(req->tbsRequest->requestorName); |
119 | req->tbsRequest->requestorName = gen; |
120 | return 1; |
121 | } |
122 | |
123 | /* Add a certificate to an OCSP request */ |
124 | int |
125 | OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert) |
126 | { |
127 | OCSP_SIGNATURE *sig; |
128 | |
129 | if (!req->optionalSignature) |
130 | req->optionalSignature = OCSP_SIGNATURE_new(); |
131 | sig = req->optionalSignature; |
132 | if (!sig) |
133 | return 0; |
134 | if (!cert) |
135 | return 1; |
136 | if (!sig->certs && !(sig->certs = sk_X509_new_null()((struct stack_st_X509 *)sk_new_null()))) |
137 | return 0; |
138 | |
139 | if (!sk_X509_push(sig->certs, cert)sk_push(((_STACK*) (1 ? (sig->certs) : (struct stack_st_X509 *)0)), ((void*) (1 ? (cert) : (X509*)0)))) |
140 | return 0; |
141 | X509_up_ref(cert); |
142 | return 1; |
143 | } |
144 | |
145 | /* Sign an OCSP request set the requestorName to the subject |
146 | * name of an optional signers certificate and include one |
147 | * or more optional certificates in the request. Behaves |
148 | * like PKCS7_sign(). |
149 | */ |
150 | int |
151 | OCSP_request_sign(OCSP_REQUEST *req, X509 *signer, EVP_PKEY *key, |
152 | const EVP_MD *dgst, STACK_OF(X509)struct stack_st_X509 *certs, unsigned long flags) |
153 | { |
154 | int i; |
155 | OCSP_SIGNATURE *sig; |
156 | X509 *x; |
157 | |
158 | if (!OCSP_request_set1_name(req, X509_get_subject_name(signer))) |
159 | goto err; |
160 | |
161 | if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) |
Although the value stored to 'sig' is used in the enclosing expression, the value is never actually read from 'sig' | |
162 | goto err; |
163 | if (key) { |
164 | if (!X509_check_private_key(signer, key)) { |
165 | OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE)ERR_put_error(39,(0xfff),(110),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,165); |
166 | goto err; |
167 | } |
168 | if (!OCSP_REQUEST_sign(req, key, dgst)ASN1_item_sign(&OCSP_REQINFO_it, req->optionalSignature ->signatureAlgorithm,((void*)0), req->optionalSignature ->signature,req->tbsRequest,key,dgst)) |
169 | goto err; |
170 | } |
171 | |
172 | if (!(flags & OCSP_NOCERTS0x1)) { |
173 | if (!OCSP_request_add1_cert(req, signer)) |
174 | goto err; |
175 | for (i = 0; i < sk_X509_num(certs)sk_num(((_STACK*) (1 ? (certs) : (struct stack_st_X509*)0))); i++) { |
176 | x = sk_X509_value(certs, i)((X509 *)sk_value(((_STACK*) (1 ? (certs) : (struct stack_st_X509 *)0)), (i))); |
177 | if (!OCSP_request_add1_cert(req, x)) |
178 | goto err; |
179 | } |
180 | } |
181 | |
182 | return 1; |
183 | |
184 | err: |
185 | OCSP_SIGNATURE_free(req->optionalSignature); |
186 | req->optionalSignature = NULL((void*)0); |
187 | return 0; |
188 | } |
189 | |
190 | /* Get response status */ |
191 | int |
192 | OCSP_response_status(OCSP_RESPONSE *resp) |
193 | { |
194 | return ASN1_ENUMERATED_get(resp->responseStatus); |
195 | } |
196 | |
197 | /* Extract basic response from OCSP_RESPONSE or NULL if |
198 | * no basic response present. |
199 | */ |
200 | OCSP_BASICRESP * |
201 | OCSP_response_get1_basic(OCSP_RESPONSE *resp) |
202 | { |
203 | OCSP_RESPBYTES *rb; |
204 | |
205 | rb = resp->responseBytes; |
206 | if (!rb) { |
207 | OCSPerror(OCSP_R_NO_RESPONSE_DATA)ERR_put_error(39,(0xfff),(108),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,207); |
208 | return NULL((void*)0); |
209 | } |
210 | if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic365) { |
211 | OCSPerror(OCSP_R_NOT_BASIC_RESPONSE)ERR_put_error(39,(0xfff),(104),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,211); |
212 | return NULL((void*)0); |
213 | } |
214 | |
215 | return ASN1_item_unpack(rb->response, &OCSP_BASICRESP_it); |
216 | } |
217 | |
218 | /* Return number of OCSP_SINGLERESP reponses present in |
219 | * a basic response. |
220 | */ |
221 | int |
222 | OCSP_resp_count(OCSP_BASICRESP *bs) |
223 | { |
224 | if (!bs) |
225 | return -1; |
226 | return sk_OCSP_SINGLERESP_num(bs->tbsResponseData->responses)sk_num(((_STACK*) (1 ? (bs->tbsResponseData->responses) : (struct stack_st_OCSP_SINGLERESP*)0))); |
227 | } |
228 | |
229 | /* Extract an OCSP_SINGLERESP response with a given index */ |
230 | OCSP_SINGLERESP * |
231 | OCSP_resp_get0(OCSP_BASICRESP *bs, int idx) |
232 | { |
233 | if (!bs) |
234 | return NULL((void*)0); |
235 | return sk_OCSP_SINGLERESP_value(bs->tbsResponseData->responses, idx)((OCSP_SINGLERESP *)sk_value(((_STACK*) (1 ? (bs->tbsResponseData ->responses) : (struct stack_st_OCSP_SINGLERESP*)0)), (idx ))); |
236 | } |
237 | |
238 | const ASN1_GENERALIZEDTIME * |
239 | OCSP_resp_get0_produced_at(const OCSP_BASICRESP *bs) |
240 | { |
241 | return bs->tbsResponseData->producedAt; |
242 | } |
243 | |
244 | const STACK_OF(X509)struct stack_st_X509 * |
245 | OCSP_resp_get0_certs(const OCSP_BASICRESP *bs) |
246 | { |
247 | return bs->certs; |
248 | } |
249 | |
250 | int |
251 | OCSP_resp_get0_id(const OCSP_BASICRESP *bs, const ASN1_OCTET_STRING **pid, |
252 | const X509_NAME **pname) |
253 | { |
254 | const OCSP_RESPID *rid = bs->tbsResponseData->responderId; |
255 | |
256 | if (rid->type == V_OCSP_RESPID_NAME0) { |
257 | *pname = rid->value.byName; |
258 | *pid = NULL((void*)0); |
259 | } else if (rid->type == V_OCSP_RESPID_KEY1) { |
260 | *pid = rid->value.byKey; |
261 | *pname = NULL((void*)0); |
262 | } else { |
263 | return 0; |
264 | } |
265 | |
266 | return 1; |
267 | } |
268 | |
269 | const ASN1_OCTET_STRING * |
270 | OCSP_resp_get0_signature(const OCSP_BASICRESP *bs) |
271 | { |
272 | return bs->signature; |
273 | } |
274 | |
275 | const X509_ALGOR * |
276 | OCSP_resp_get0_tbs_sigalg(const OCSP_BASICRESP *bs) |
277 | { |
278 | return bs->signatureAlgorithm; |
279 | } |
280 | |
281 | const OCSP_RESPDATA * |
282 | OCSP_resp_get0_respdata(const OCSP_BASICRESP *bs) |
283 | { |
284 | return bs->tbsResponseData; |
285 | } |
286 | |
287 | /* Look single response matching a given certificate ID */ |
288 | int |
289 | OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last) |
290 | { |
291 | int i; |
292 | STACK_OF(OCSP_SINGLERESP)struct stack_st_OCSP_SINGLERESP *sresp; |
293 | OCSP_SINGLERESP *single; |
294 | |
295 | if (!bs) |
296 | return -1; |
297 | if (last < 0) |
298 | last = 0; |
299 | else |
300 | last++; |
301 | sresp = bs->tbsResponseData->responses; |
302 | for (i = last; i < sk_OCSP_SINGLERESP_num(sresp)sk_num(((_STACK*) (1 ? (sresp) : (struct stack_st_OCSP_SINGLERESP *)0))); i++) { |
303 | single = sk_OCSP_SINGLERESP_value(sresp, i)((OCSP_SINGLERESP *)sk_value(((_STACK*) (1 ? (sresp) : (struct stack_st_OCSP_SINGLERESP*)0)), (i))); |
304 | if (!OCSP_id_cmp(id, single->certId)) |
305 | return i; |
306 | } |
307 | return -1; |
308 | } |
309 | |
310 | /* Extract status information from an OCSP_SINGLERESP structure. |
311 | * Note: the revtime and reason values are only set if the |
312 | * certificate status is revoked. Returns numerical value of |
313 | * status. |
314 | */ |
315 | int |
316 | OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason, |
317 | ASN1_GENERALIZEDTIME **revtime, ASN1_GENERALIZEDTIME **thisupd, |
318 | ASN1_GENERALIZEDTIME **nextupd) |
319 | { |
320 | int ret; |
321 | OCSP_CERTSTATUS *cst; |
322 | |
323 | if (!single) |
324 | return -1; |
325 | cst = single->certStatus; |
326 | ret = cst->type; |
327 | if (ret == V_OCSP_CERTSTATUS_REVOKED1) { |
328 | OCSP_REVOKEDINFO *rev = cst->value.revoked; |
329 | |
330 | if (revtime) |
331 | *revtime = rev->revocationTime; |
332 | if (reason) { |
333 | if (rev->revocationReason) |
334 | *reason = ASN1_ENUMERATED_get( |
335 | rev->revocationReason); |
336 | else |
337 | *reason = -1; |
338 | } |
339 | } |
340 | if (thisupd) |
341 | *thisupd = single->thisUpdate; |
342 | if (nextupd) |
343 | *nextupd = single->nextUpdate; |
344 | return ret; |
345 | } |
346 | |
347 | /* This function combines the previous ones: look up a certificate ID and |
348 | * if found extract status information. Return 0 is successful. |
349 | */ |
350 | int |
351 | OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status, |
352 | int *reason, ASN1_GENERALIZEDTIME **revtime, ASN1_GENERALIZEDTIME **thisupd, |
353 | ASN1_GENERALIZEDTIME **nextupd) |
354 | { |
355 | int i; |
356 | OCSP_SINGLERESP *single; |
357 | |
358 | i = OCSP_resp_find(bs, id, -1); |
359 | /* Maybe check for multiple responses and give an error? */ |
360 | if (i < 0) |
361 | return 0; |
362 | single = OCSP_resp_get0(bs, i); |
363 | i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd); |
364 | if (status) |
365 | *status = i; |
366 | return 1; |
367 | } |
368 | |
369 | /* Check validity of thisUpdate and nextUpdate fields. It is possible that the request will |
370 | * take a few seconds to process and/or the time wont be totally accurate. Therefore to avoid |
371 | * rejecting otherwise valid time we allow the times to be within 'nsec' of the current time. |
372 | * Also to avoid accepting very old responses without a nextUpdate field an optional maxage |
373 | * parameter specifies the maximum age the thisUpdate field can be. |
374 | */ |
375 | int |
376 | OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd, |
377 | ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec) |
378 | { |
379 | time_t t_now, t_tmp; |
380 | struct tm tm_this, tm_next, tm_tmp; |
381 | |
382 | time(&t_now); |
383 | |
384 | /* |
385 | * Times must explicitly be a GENERALIZEDTIME as per section |
386 | * 4.2.2.1 of RFC 6960 - It is invalid to accept other times |
387 | * (such as UTCTIME permitted/required by RFC 5280 for certificates) |
388 | */ |
389 | |
390 | /* Check thisUpdate is valid and not more than nsec in the future */ |
391 | if (ASN1_time_parse(thisupd->data, thisupd->length, &tm_this, |
392 | V_ASN1_GENERALIZEDTIME24) != V_ASN1_GENERALIZEDTIME24) { |
393 | OCSPerror(OCSP_R_ERROR_IN_THISUPDATE_FIELD)ERR_put_error(39,(0xfff),(123),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,393); |
394 | return 0; |
395 | } else { |
396 | t_tmp = t_now + nsec; |
397 | if (gmtime_r(&t_tmp, &tm_tmp) == NULL((void*)0)) |
398 | return 0; |
399 | if (ASN1_time_tm_cmp(&tm_this, &tm_tmp) > 0) { |
400 | OCSPerror(OCSP_R_STATUS_NOT_YET_VALID)ERR_put_error(39,(0xfff),(126),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,400); |
401 | return 0; |
402 | } |
403 | |
404 | /* |
405 | * If maxsec specified check thisUpdate is not more than maxsec |
406 | * in the past |
407 | */ |
408 | if (maxsec >= 0) { |
409 | t_tmp = t_now - maxsec; |
410 | if (gmtime_r(&t_tmp, &tm_tmp) == NULL((void*)0)) |
411 | return 0; |
412 | if (ASN1_time_tm_cmp(&tm_this, &tm_tmp) < 0) { |
413 | OCSPerror(OCSP_R_STATUS_TOO_OLD)ERR_put_error(39,(0xfff),(127),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,413); |
414 | return 0; |
415 | } |
416 | } |
417 | } |
418 | |
419 | if (!nextupd) |
420 | return 1; |
421 | |
422 | /* Check nextUpdate is valid and not more than nsec in the past */ |
423 | if (ASN1_time_parse(nextupd->data, nextupd->length, &tm_next, |
424 | V_ASN1_GENERALIZEDTIME24) != V_ASN1_GENERALIZEDTIME24) { |
425 | OCSPerror(OCSP_R_ERROR_IN_NEXTUPDATE_FIELD)ERR_put_error(39,(0xfff),(122),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,425); |
426 | return 0; |
427 | } else { |
428 | t_tmp = t_now - nsec; |
429 | if (gmtime_r(&t_tmp, &tm_tmp) == NULL((void*)0)) |
430 | return 0; |
431 | if (ASN1_time_tm_cmp(&tm_next, &tm_tmp) < 0) { |
432 | OCSPerror(OCSP_R_STATUS_EXPIRED)ERR_put_error(39,(0xfff),(125),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,432); |
433 | return 0; |
434 | } |
435 | } |
436 | |
437 | /* Also don't allow nextUpdate to precede thisUpdate */ |
438 | if (ASN1_time_tm_cmp(&tm_next, &tm_this) < 0) { |
439 | OCSPerror(OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE)ERR_put_error(39,(0xfff),(124),"/usr/src/lib/libcrypto/ocsp/ocsp_cl.c" ,439); |
440 | return 0; |
441 | } |
442 | |
443 | return 1; |
444 | } |
445 | |
446 | const OCSP_CERTID * |
447 | OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP *single) |
448 | { |
449 | return single->certId; |
450 | } |