2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/objects.h>
13 #include <openssl/x509.h>
14 #include <openssl/ocsp.h>
16 #include <openssl/rand.h>
17 #include <openssl/x509v3.h>
19 /* Standard wrapper functions for extensions */
21 /* OCSP request extensions */
23 int OCSP_REQUEST_get_ext_count(OCSP_REQUEST *x)
25 return (X509v3_get_ext_count(x->tbsRequest.requestExtensions));
28 int OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST *x, int nid, int lastpos)
30 return (X509v3_get_ext_by_NID
31 (x->tbsRequest.requestExtensions, nid, lastpos));
34 int OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST *x, ASN1_OBJECT *obj,
37 return (X509v3_get_ext_by_OBJ
38 (x->tbsRequest.requestExtensions, obj, lastpos));
41 int OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST *x, int crit, int lastpos)
43 return (X509v3_get_ext_by_critical
44 (x->tbsRequest.requestExtensions, crit, lastpos));
47 X509_EXTENSION *OCSP_REQUEST_get_ext(OCSP_REQUEST *x, int loc)
49 return (X509v3_get_ext(x->tbsRequest.requestExtensions, loc));
52 X509_EXTENSION *OCSP_REQUEST_delete_ext(OCSP_REQUEST *x, int loc)
54 return (X509v3_delete_ext(x->tbsRequest.requestExtensions, loc));
57 void *OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST *x, int nid, int *crit, int *idx)
59 return X509V3_get_d2i(x->tbsRequest.requestExtensions, nid, crit, idx);
62 int OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *x, int nid, void *value, int crit,
65 return X509V3_add1_i2d(&x->tbsRequest.requestExtensions, nid, value,
69 int OCSP_REQUEST_add_ext(OCSP_REQUEST *x, X509_EXTENSION *ex, int loc)
71 return (X509v3_add_ext(&(x->tbsRequest.requestExtensions), ex, loc) !=
75 /* Single extensions */
77 int OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *x)
79 return (X509v3_get_ext_count(x->singleRequestExtensions));
82 int OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ *x, int nid, int lastpos)
84 return (X509v3_get_ext_by_NID(x->singleRequestExtensions, nid, lastpos));
87 int OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ *x, ASN1_OBJECT *obj, int lastpos)
89 return (X509v3_get_ext_by_OBJ(x->singleRequestExtensions, obj, lastpos));
92 int OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ *x, int crit, int lastpos)
94 return (X509v3_get_ext_by_critical
95 (x->singleRequestExtensions, crit, lastpos));
98 X509_EXTENSION *OCSP_ONEREQ_get_ext(OCSP_ONEREQ *x, int loc)
100 return (X509v3_get_ext(x->singleRequestExtensions, loc));
103 X509_EXTENSION *OCSP_ONEREQ_delete_ext(OCSP_ONEREQ *x, int loc)
105 return (X509v3_delete_ext(x->singleRequestExtensions, loc));
108 void *OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ *x, int nid, int *crit, int *idx)
110 return X509V3_get_d2i(x->singleRequestExtensions, nid, crit, idx);
113 int OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ *x, int nid, void *value, int crit,
116 return X509V3_add1_i2d(&x->singleRequestExtensions, nid, value, crit,
120 int OCSP_ONEREQ_add_ext(OCSP_ONEREQ *x, X509_EXTENSION *ex, int loc)
122 return (X509v3_add_ext(&(x->singleRequestExtensions), ex, loc) != NULL);
125 /* OCSP Basic response */
127 int OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *x)
129 return (X509v3_get_ext_count(x->tbsResponseData.responseExtensions));
132 int OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP *x, int nid, int lastpos)
134 return (X509v3_get_ext_by_NID
135 (x->tbsResponseData.responseExtensions, nid, lastpos));
138 int OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP *x, ASN1_OBJECT *obj,
141 return (X509v3_get_ext_by_OBJ
142 (x->tbsResponseData.responseExtensions, obj, lastpos));
145 int OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP *x, int crit,
148 return (X509v3_get_ext_by_critical
149 (x->tbsResponseData.responseExtensions, crit, lastpos));
152 X509_EXTENSION *OCSP_BASICRESP_get_ext(OCSP_BASICRESP *x, int loc)
154 return (X509v3_get_ext(x->tbsResponseData.responseExtensions, loc));
157 X509_EXTENSION *OCSP_BASICRESP_delete_ext(OCSP_BASICRESP *x, int loc)
159 return (X509v3_delete_ext(x->tbsResponseData.responseExtensions, loc));
162 void *OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP *x, int nid, int *crit,
165 return X509V3_get_d2i(x->tbsResponseData.responseExtensions, nid, crit,
169 int OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *x, int nid, void *value,
170 int crit, unsigned long flags)
172 return X509V3_add1_i2d(&x->tbsResponseData.responseExtensions, nid,
176 int OCSP_BASICRESP_add_ext(OCSP_BASICRESP *x, X509_EXTENSION *ex, int loc)
178 return (X509v3_add_ext(&(x->tbsResponseData.responseExtensions), ex, loc)
182 /* OCSP single response extensions */
184 int OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *x)
186 return (X509v3_get_ext_count(x->singleExtensions));
189 int OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP *x, int nid, int lastpos)
191 return (X509v3_get_ext_by_NID(x->singleExtensions, nid, lastpos));
194 int OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP *x, ASN1_OBJECT *obj,
197 return (X509v3_get_ext_by_OBJ(x->singleExtensions, obj, lastpos));
200 int OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP *x, int crit,
203 return (X509v3_get_ext_by_critical(x->singleExtensions, crit, lastpos));
206 X509_EXTENSION *OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *x, int loc)
208 return (X509v3_get_ext(x->singleExtensions, loc));
211 X509_EXTENSION *OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP *x, int loc)
213 return (X509v3_delete_ext(x->singleExtensions, loc));
216 void *OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP *x, int nid, int *crit,
219 return X509V3_get_d2i(x->singleExtensions, nid, crit, idx);
222 int OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP *x, int nid, void *value,
223 int crit, unsigned long flags)
225 return X509V3_add1_i2d(&x->singleExtensions, nid, value, crit, flags);
228 int OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP *x, X509_EXTENSION *ex, int loc)
230 return (X509v3_add_ext(&(x->singleExtensions), ex, loc) != NULL);
233 /* also CRL Entry Extensions */
235 /* Nonce handling functions */
238 * Add a nonce to an extension stack. A nonce can be specified or if NULL a
239 * random nonce will be generated. Note: OpenSSL 0.9.7d and later create an
240 * OCTET STRING containing the nonce, previous versions used the raw nonce.
243 static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts,
244 unsigned char *val, int len)
246 unsigned char *tmpval;
247 ASN1_OCTET_STRING os;
250 len = OCSP_DEFAULT_NONCE_LENGTH;
252 * Create the OCTET STRING manually by writing out the header and
253 * appending the content octets. This avoids an extra memory allocation
254 * operation in some cases. Applications should *NOT* do this because it
255 * relies on library internals.
257 os.length = ASN1_object_size(0, len, V_ASN1_OCTET_STRING);
258 os.data = OPENSSL_malloc(os.length);
262 ASN1_put_object(&tmpval, 0, len, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL);
264 memcpy(tmpval, val, len);
265 else if (RAND_bytes(tmpval, len) <= 0)
267 if (!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce,
268 &os, 0, X509V3_ADD_REPLACE))
272 OPENSSL_free(os.data);
276 /* Add nonce to an OCSP request */
278 int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
280 return ocsp_add1_nonce(&req->tbsRequest.requestExtensions, val, len);
283 /* Same as above but for a response */
285 int OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len)
287 return ocsp_add1_nonce(&resp->tbsResponseData.responseExtensions, val,
292 * Check nonce validity in a request and response.
293 * Return value reflects result:
294 * 1: nonces present and equal.
295 * 2: nonces both absent.
296 * 3: nonce present in response only.
297 * 0: nonces both present and not equal.
298 * -1: nonce in request only.
300 * For most responders clients can check return > 0.
301 * If responder doesn't handle nonces return != 0 may be
302 * necessary. return == 0 is always an error.
305 int OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs)
308 * Since we are only interested in the presence or absence of
309 * the nonce and comparing its value there is no need to use
310 * the X509V3 routines: this way we can avoid them allocating an
311 * ASN1_OCTET_STRING structure for the value which would be
312 * freed immediately anyway.
315 int req_idx, resp_idx;
316 X509_EXTENSION *req_ext, *resp_ext;
317 req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
318 resp_idx = OCSP_BASICRESP_get_ext_by_NID(bs, NID_id_pkix_OCSP_Nonce, -1);
319 /* Check both absent */
320 if ((req_idx < 0) && (resp_idx < 0))
322 /* Check in request only */
323 if ((req_idx >= 0) && (resp_idx < 0))
325 /* Check in response but not request */
326 if ((req_idx < 0) && (resp_idx >= 0))
329 * Otherwise nonce in request and response so retrieve the extensions
331 req_ext = OCSP_REQUEST_get_ext(req, req_idx);
332 resp_ext = OCSP_BASICRESP_get_ext(bs, resp_idx);
333 if (ASN1_OCTET_STRING_cmp(X509_EXTENSION_get_data(req_ext),
334 X509_EXTENSION_get_data(resp_ext)))
340 * Copy the nonce value (if any) from an OCSP request to a response.
343 int OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req)
345 X509_EXTENSION *req_ext;
347 /* Check for nonce in request */
348 req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
349 /* If no nonce that's OK */
352 req_ext = OCSP_REQUEST_get_ext(req, req_idx);
353 return OCSP_BASICRESP_add_ext(resp, req_ext, -1);
356 X509_EXTENSION *OCSP_crlID_new(char *url, long *n, char *tim)
358 X509_EXTENSION *x = NULL;
359 OCSP_CRLID *cid = NULL;
361 if ((cid = OCSP_CRLID_new()) == NULL)
364 if ((cid->crlUrl = ASN1_IA5STRING_new()) == NULL)
366 if (!(ASN1_STRING_set(cid->crlUrl, url, -1)))
370 if ((cid->crlNum = ASN1_INTEGER_new()) == NULL)
372 if (!(ASN1_INTEGER_set(cid->crlNum, *n)))
376 if ((cid->crlTime = ASN1_GENERALIZEDTIME_new()) == NULL)
378 if (!(ASN1_GENERALIZEDTIME_set_string(cid->crlTime, tim)))
381 x = X509V3_EXT_i2d(NID_id_pkix_OCSP_CrlID, 0, cid);
383 OCSP_CRLID_free(cid);
387 /* AcceptableResponses ::= SEQUENCE OF OBJECT IDENTIFIER */
388 X509_EXTENSION *OCSP_accept_responses_new(char **oids)
391 STACK_OF(ASN1_OBJECT) *sk = NULL;
392 ASN1_OBJECT *o = NULL;
393 X509_EXTENSION *x = NULL;
395 if ((sk = sk_ASN1_OBJECT_new_null()) == NULL)
397 while (oids && *oids) {
398 if ((nid = OBJ_txt2nid(*oids)) != NID_undef && (o = OBJ_nid2obj(nid)))
399 sk_ASN1_OBJECT_push(sk, o);
402 x = X509V3_EXT_i2d(NID_id_pkix_OCSP_acceptableResponses, 0, sk);
404 sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
408 /* ArchiveCutoff ::= GeneralizedTime */
409 X509_EXTENSION *OCSP_archive_cutoff_new(char *tim)
411 X509_EXTENSION *x = NULL;
412 ASN1_GENERALIZEDTIME *gt = NULL;
414 if ((gt = ASN1_GENERALIZEDTIME_new()) == NULL)
416 if (!(ASN1_GENERALIZEDTIME_set_string(gt, tim)))
418 x = X509V3_EXT_i2d(NID_id_pkix_OCSP_archiveCutoff, 0, gt);
420 ASN1_GENERALIZEDTIME_free(gt);
425 * per ACCESS_DESCRIPTION parameter are oids, of which there are currently
426 * two--NID_ad_ocsp, NID_id_ad_caIssuers--and GeneralName value. This method
427 * forces NID_ad_ocsp and uniformResourceLocator [6] IA5String.
429 X509_EXTENSION *OCSP_url_svcloc_new(X509_NAME *issuer, char **urls)
431 X509_EXTENSION *x = NULL;
432 ASN1_IA5STRING *ia5 = NULL;
433 OCSP_SERVICELOC *sloc = NULL;
434 ACCESS_DESCRIPTION *ad = NULL;
436 if ((sloc = OCSP_SERVICELOC_new()) == NULL)
438 if ((sloc->issuer = X509_NAME_dup(issuer)) == NULL)
441 && (sloc->locator = sk_ACCESS_DESCRIPTION_new_null()) == NULL)
443 while (urls && *urls) {
444 if ((ad = ACCESS_DESCRIPTION_new()) == NULL)
446 if ((ad->method = OBJ_nid2obj(NID_ad_OCSP)) == NULL)
448 if ((ad->location = GENERAL_NAME_new()) == NULL)
450 if ((ia5 = ASN1_IA5STRING_new()) == NULL)
452 if (!ASN1_STRING_set((ASN1_STRING *)ia5, *urls, -1))
454 ad->location->type = GEN_URI;
455 ad->location->d.ia5 = ia5;
457 if (!sk_ACCESS_DESCRIPTION_push(sloc->locator, ad))
462 x = X509V3_EXT_i2d(NID_id_pkix_OCSP_serviceLocator, 0, sloc);
464 ASN1_IA5STRING_free(ia5);
465 ACCESS_DESCRIPTION_free(ad);
466 OCSP_SERVICELOC_free(sloc);