2 /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
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
10 /* ====================================================================
11 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
39 * 6. Redistributions of any form whatsoever must retain the following
41 * "This product includes software developed by the OpenSSL Project
42 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
66 #include <openssl/objects.h>
67 #include <openssl/x509.h>
68 #include <openssl/ocsp.h>
69 #include <openssl/rand.h>
70 #include <openssl/x509v3.h>
72 /* Standard wrapper functions for extensions */
74 /* OCSP request extensions */
76 int OCSP_REQUEST_get_ext_count(OCSP_REQUEST *x)
78 return(X509v3_get_ext_count(x->tbsRequest->requestExtensions));
81 int OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST *x, int nid, int lastpos)
83 return(X509v3_get_ext_by_NID(x->tbsRequest->requestExtensions,nid,lastpos));
86 int OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST *x, ASN1_OBJECT *obj, int lastpos)
88 return(X509v3_get_ext_by_OBJ(x->tbsRequest->requestExtensions,obj,lastpos));
91 int OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST *x, int crit, int lastpos)
93 return(X509v3_get_ext_by_critical(x->tbsRequest->requestExtensions,crit,lastpos));
96 X509_EXTENSION *OCSP_REQUEST_get_ext(OCSP_REQUEST *x, int loc)
98 return(X509v3_get_ext(x->tbsRequest->requestExtensions,loc));
101 X509_EXTENSION *OCSP_REQUEST_delete_ext(OCSP_REQUEST *x, int loc)
103 return(X509v3_delete_ext(x->tbsRequest->requestExtensions,loc));
106 void *OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST *x, int nid, int *crit, int *idx)
108 return X509V3_get_d2i(x->tbsRequest->requestExtensions, nid, crit, idx);
111 int OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *x, int nid, void *value, int crit,
114 return X509V3_add1_i2d(&x->tbsRequest->requestExtensions, nid, value, crit, flags);
117 int OCSP_REQUEST_add_ext(OCSP_REQUEST *x, X509_EXTENSION *ex, int loc)
119 return(X509v3_add_ext(&(x->tbsRequest->requestExtensions),ex,loc) != NULL);
122 /* Single extensions */
124 int OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *x)
126 return(X509v3_get_ext_count(x->singleRequestExtensions));
129 int OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ *x, int nid, int lastpos)
131 return(X509v3_get_ext_by_NID(x->singleRequestExtensions,nid,lastpos));
134 int OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ *x, ASN1_OBJECT *obj, int lastpos)
136 return(X509v3_get_ext_by_OBJ(x->singleRequestExtensions,obj,lastpos));
139 int OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ *x, int crit, int lastpos)
141 return(X509v3_get_ext_by_critical(x->singleRequestExtensions,crit,lastpos));
144 X509_EXTENSION *OCSP_ONEREQ_get_ext(OCSP_ONEREQ *x, int loc)
146 return(X509v3_get_ext(x->singleRequestExtensions,loc));
149 X509_EXTENSION *OCSP_ONEREQ_delete_ext(OCSP_ONEREQ *x, int loc)
151 return(X509v3_delete_ext(x->singleRequestExtensions,loc));
154 void *OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ *x, int nid, int *crit, int *idx)
156 return X509V3_get_d2i(x->singleRequestExtensions, nid, crit, idx);
159 int OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ *x, int nid, void *value, int crit,
162 return X509V3_add1_i2d(&x->singleRequestExtensions, nid, value, crit, flags);
165 int OCSP_ONEREQ_add_ext(OCSP_ONEREQ *x, X509_EXTENSION *ex, int loc)
167 return(X509v3_add_ext(&(x->singleRequestExtensions),ex,loc) != NULL);
170 /* OCSP Basic response */
172 int OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *x)
174 return(X509v3_get_ext_count(x->tbsResponseData->responseExtensions));
177 int OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP *x, int nid, int lastpos)
179 return(X509v3_get_ext_by_NID(x->tbsResponseData->responseExtensions,nid,lastpos));
182 int OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP *x, ASN1_OBJECT *obj, int lastpos)
184 return(X509v3_get_ext_by_OBJ(x->tbsResponseData->responseExtensions,obj,lastpos));
187 int OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP *x, int crit, int lastpos)
189 return(X509v3_get_ext_by_critical(x->tbsResponseData->responseExtensions,crit,lastpos));
192 X509_EXTENSION *OCSP_BASICRESP_get_ext(OCSP_BASICRESP *x, int loc)
194 return(X509v3_get_ext(x->tbsResponseData->responseExtensions,loc));
197 X509_EXTENSION *OCSP_BASICRESP_delete_ext(OCSP_BASICRESP *x, int loc)
199 return(X509v3_delete_ext(x->tbsResponseData->responseExtensions,loc));
202 void *OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP *x, int nid, int *crit, int *idx)
204 return X509V3_get_d2i(x->tbsResponseData->responseExtensions, nid, crit, idx);
207 int OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *x, int nid, void *value, int crit,
210 return X509V3_add1_i2d(&x->tbsResponseData->responseExtensions, nid, value, crit, flags);
213 int OCSP_BASICRESP_add_ext(OCSP_BASICRESP *x, X509_EXTENSION *ex, int loc)
215 return(X509v3_add_ext(&(x->tbsResponseData->responseExtensions),ex,loc) != NULL);
218 /* OCSP single response extensions */
220 int OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *x)
222 return(X509v3_get_ext_count(x->singleExtensions));
225 int OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP *x, int nid, int lastpos)
227 return(X509v3_get_ext_by_NID(x->singleExtensions,nid,lastpos));
230 int OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP *x, ASN1_OBJECT *obj, int lastpos)
232 return(X509v3_get_ext_by_OBJ(x->singleExtensions,obj,lastpos));
235 int OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP *x, int crit, int lastpos)
237 return(X509v3_get_ext_by_critical(x->singleExtensions,crit,lastpos));
240 X509_EXTENSION *OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *x, int loc)
242 return(X509v3_get_ext(x->singleExtensions,loc));
245 X509_EXTENSION *OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP *x, int loc)
247 return(X509v3_delete_ext(x->singleExtensions,loc));
250 void *OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP *x, int nid, int *crit, int *idx)
252 return X509V3_get_d2i(x->singleExtensions, nid, crit, idx);
255 int OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP *x, int nid, void *value, int crit,
258 return X509V3_add1_i2d(&x->singleExtensions, nid, value, crit, flags);
261 int OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP *x, X509_EXTENSION *ex, int loc)
263 return(X509v3_add_ext(&(x->singleExtensions),ex,loc) != NULL);
266 /* also CRL Entry Extensions */
268 ASN1_STRING *ASN1_STRING_encode(ASN1_STRING *s, int (*i2d)(),
269 char *data, STACK_OF(ASN1_OBJECT) *sk)
272 unsigned char *p, *b = NULL;
276 if ((i=i2d(data,NULL)) <= 0) goto err;
277 if (!(b=p=(unsigned char*)OPENSSL_malloc((unsigned int)i)))
279 if (i2d(data, &p) <= 0) goto err;
283 if ((i=i2d_ASN1_SET_OF_ASN1_OBJECT(sk,NULL,i2d,V_ASN1_SEQUENCE,
284 V_ASN1_UNIVERSAL,IS_SEQUENCE))<=0) goto err;
285 if (!(b=p=(unsigned char*)OPENSSL_malloc((unsigned int)i)))
287 if (i2d_ASN1_SET_OF_ASN1_OBJECT(sk,&p,i2d,V_ASN1_SEQUENCE,
288 V_ASN1_UNIVERSAL,IS_SEQUENCE)<=0) goto err;
292 OCSPerr(OCSP_F_ASN1_STRING_ENCODE,OCSP_R_BAD_DATA);
295 if (!s && !(s = ASN1_STRING_new())) goto err;
296 if (!(ASN1_STRING_set(s, b, i))) goto err;
300 if (b) OPENSSL_free(b);
304 /* Nonce handling functions */
306 /* Add a nonce to an extension stack. A nonce can be specificed or if NULL
307 * a random nonce will be generated.
310 static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, int len)
312 unsigned char *tmpval;
313 ASN1_OCTET_STRING os;
315 if (len <= 0) len = OCSP_DEFAULT_NONCE_LENGTH;
316 if (val) tmpval = val;
319 if (!(tmpval = OPENSSL_malloc(len))) goto err;
320 RAND_pseudo_bytes(tmpval, len);
324 if(!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce,
325 &os, 0, X509V3_ADD_REPLACE))
329 if(!val) OPENSSL_free(tmpval);
334 /* Add nonce to an OCSP request */
336 int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
338 return ocsp_add1_nonce(&req->tbsRequest->requestExtensions, val, len);
341 /* Same as above but for a response */
343 int OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len)
345 return ocsp_add1_nonce(&resp->tbsResponseData->responseExtensions, val, len);
348 /* Check nonce validity in a request and response.
349 * Return value reflects result:
350 * 1: nonces present and equal.
351 * 2: nonces both absent.
352 * 3: nonce present in response only.
353 * 0: nonces both present and not equal.
354 * -1: nonce in request only.
356 * For most responders clients can check return > 0.
357 * If responder doesn't handle nonces return != 0 may be
358 * necessary. return == 0 is always an error.
361 int OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs)
364 * Since we are only interested in the presence or absence of
365 * the nonce and comparing its value there is no need to use
366 * the X509V3 routines: this way we can avoid them allocating an
367 * ASN1_OCTET_STRING structure for the value which would be
368 * freed immediately anyway.
371 int req_idx, resp_idx;
372 X509_EXTENSION *req_ext, *resp_ext;
373 req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
374 resp_idx = OCSP_BASICRESP_get_ext_by_NID(bs, NID_id_pkix_OCSP_Nonce, -1);
375 /* Check both absent */
376 if((req_idx < 0) && (resp_idx < 0))
378 /* Check in request only */
379 if((req_idx >= 0) && (resp_idx < 0))
381 /* Check in response but not request */
382 if((req_idx < 0) && (resp_idx >= 0))
384 /* Otherwise nonce in request and response so retrieve the extensions */
385 req_ext = OCSP_REQUEST_get_ext(req, req_idx);
386 resp_ext = OCSP_BASICRESP_get_ext(bs, resp_idx);
387 if(ASN1_OCTET_STRING_cmp(req_ext->value, resp_ext->value))
392 /* Copy the nonce value (if any) from an OCSP request to
396 int OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req)
398 X509_EXTENSION *req_ext;
400 /* Check for nonce in request */
401 req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
402 /* If no nonce that's OK */
403 if (req_idx < 0) return 2;
404 req_ext = OCSP_REQUEST_get_ext(req, req_idx);
405 return OCSP_BASICRESP_add_ext(resp, req_ext, -1);
408 X509_EXTENSION *OCSP_crlID_new(char *url, long *n, char *tim)
410 X509_EXTENSION *x = NULL;
411 OCSP_CRLID *cid = NULL;
413 if (!(cid = OCSP_CRLID_new())) goto err;
416 if (!(cid->crlUrl = ASN1_IA5STRING_new())) goto err;
417 if (!(ASN1_STRING_set(cid->crlUrl, url, -1))) goto err;
421 if (!(cid->crlNum = ASN1_INTEGER_new())) goto err;
422 if (!(ASN1_INTEGER_set(cid->crlNum, *n))) goto err;
426 if (!(cid->crlTime = ASN1_GENERALIZEDTIME_new())) goto err;
427 if (!(ASN1_GENERALIZEDTIME_set_string(cid->crlTime, tim)))
430 if (!(x = X509_EXTENSION_new())) goto err;
431 if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_CrlID))) goto err;
432 if (!(ASN1_STRING_encode(x->value,i2d_OCSP_CRLID,(char*)cid,NULL)))
434 OCSP_CRLID_free(cid);
437 if (x) X509_EXTENSION_free(x);
438 if (cid) OCSP_CRLID_free(cid);
442 /* AcceptableResponses ::= SEQUENCE OF OBJECT IDENTIFIER */
443 X509_EXTENSION *OCSP_accept_responses_new(char **oids)
446 STACK_OF(ASN1_OBJECT) *sk = NULL;
447 ASN1_OBJECT *o = NULL;
448 X509_EXTENSION *x = NULL;
450 if (!(sk = sk_ASN1_OBJECT_new_null())) goto err;
451 while (oids && *oids)
453 if ((nid=OBJ_txt2nid(*oids))!=NID_undef&&(o=OBJ_nid2obj(nid)))
454 sk_ASN1_OBJECT_push(sk, o);
457 if (!(x = X509_EXTENSION_new())) goto err;
458 if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_acceptableResponses)))
460 if (!(ASN1_STRING_encode(x->value,i2d_ASN1_OBJECT,NULL,sk)))
462 sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
465 if (x) X509_EXTENSION_free(x);
466 if (sk) sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
470 /* ArchiveCutoff ::= GeneralizedTime */
471 X509_EXTENSION *OCSP_archive_cutoff_new(char* tim)
473 X509_EXTENSION *x=NULL;
474 ASN1_GENERALIZEDTIME *gt = NULL;
476 if (!(gt = ASN1_GENERALIZEDTIME_new())) goto err;
477 if (!(ASN1_GENERALIZEDTIME_set_string(gt, tim))) goto err;
478 if (!(x = X509_EXTENSION_new())) goto err;
479 if (!(x->object=OBJ_nid2obj(NID_id_pkix_OCSP_archiveCutoff)))goto err;
480 if (!(ASN1_STRING_encode(x->value,i2d_ASN1_GENERALIZEDTIME,
481 (char*)gt,NULL))) goto err;
482 ASN1_GENERALIZEDTIME_free(gt);
485 if (gt) ASN1_GENERALIZEDTIME_free(gt);
486 if (x) X509_EXTENSION_free(x);
490 /* per ACCESS_DESCRIPTION parameter are oids, of which there are currently
491 * two--NID_ad_ocsp, NID_id_ad_caIssuers--and GeneralName value. This
492 * method forces NID_ad_ocsp and uniformResourceLocator [6] IA5String.
494 X509_EXTENSION *OCSP_url_svcloc_new(X509_NAME* issuer, char **urls)
496 X509_EXTENSION *x = NULL;
497 ASN1_IA5STRING *ia5 = NULL;
498 OCSP_SERVICELOC *sloc = NULL;
499 ACCESS_DESCRIPTION *ad = NULL;
501 if (!(sloc = OCSP_SERVICELOC_new())) goto err;
502 if (!(sloc->issuer = X509_NAME_dup(issuer))) goto err;
503 if (urls && *urls && !(sloc->locator = sk_ACCESS_DESCRIPTION_new_null())) goto err;
504 while (urls && *urls)
506 if (!(ad = ACCESS_DESCRIPTION_new())) goto err;
507 if (!(ad->method=OBJ_nid2obj(NID_ad_OCSP))) goto err;
508 if (!(ad->location = GENERAL_NAME_new())) goto err;
509 if (!(ia5 = ASN1_IA5STRING_new())) goto err;
510 if (!ASN1_STRING_set((ASN1_STRING*)ia5, *urls, -1)) goto err;
511 ad->location->type = GEN_URI;
512 ad->location->d.ia5 = ia5;
513 if (!sk_ACCESS_DESCRIPTION_push(sloc->locator, ad)) goto err;
516 if (!(x = X509_EXTENSION_new())) goto err;
517 if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_serviceLocator)))
519 if (!(ASN1_STRING_encode(x->value, i2d_OCSP_SERVICELOC,
520 (char*)sloc, NULL))) goto err;
521 OCSP_SERVICELOC_free(sloc);
524 if (x) X509_EXTENSION_free(x);
525 if (sloc) OCSP_SERVICELOC_free(sloc);