1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/asn1t.h>
61 #include <openssl/x509.h>
62 #include "internal/x509_int.h"
63 #include <openssl/x509v3.h>
66 static int X509_REVOKED_cmp(const X509_REVOKED
*const *a
,
67 const X509_REVOKED
*const *b
);
68 static void setup_idp(X509_CRL
*crl
, ISSUING_DIST_POINT
*idp
);
70 ASN1_SEQUENCE(X509_REVOKED
) = {
71 ASN1_EMBED(X509_REVOKED
,serialNumber
, ASN1_INTEGER
),
72 ASN1_SIMPLE(X509_REVOKED
,revocationDate
, ASN1_TIME
),
73 ASN1_SEQUENCE_OF_OPT(X509_REVOKED
,extensions
, X509_EXTENSION
)
74 } ASN1_SEQUENCE_END(X509_REVOKED
)
76 static int def_crl_verify(X509_CRL
*crl
, EVP_PKEY
*r
);
77 static int def_crl_lookup(X509_CRL
*crl
,
78 X509_REVOKED
**ret
, ASN1_INTEGER
*serial
,
81 static X509_CRL_METHOD int_crl_meth
= {
88 static const X509_CRL_METHOD
*default_crl_method
= &int_crl_meth
;
91 * The X509_CRL_INFO structure needs a bit of customisation. Since we cache
92 * the original encoding the signature wont be affected by reordering of the
95 static int crl_inf_cb(int operation
, ASN1_VALUE
**pval
, const ASN1_ITEM
*it
,
98 X509_CRL_INFO
*a
= (X509_CRL_INFO
*)*pval
;
100 if (!a
|| !a
->revoked
)
104 * Just set cmp function here. We don't sort because that would
105 * affect the output of X509_CRL_print().
107 case ASN1_OP_D2I_POST
:
108 (void)sk_X509_REVOKED_set_cmp_func(a
->revoked
, X509_REVOKED_cmp
);
115 ASN1_SEQUENCE_enc(X509_CRL_INFO
, enc
, crl_inf_cb
) = {
116 ASN1_OPT(X509_CRL_INFO
, version
, ASN1_INTEGER
),
117 ASN1_EMBED(X509_CRL_INFO
, sig_alg
, X509_ALGOR
),
118 ASN1_SIMPLE(X509_CRL_INFO
, issuer
, X509_NAME
),
119 ASN1_SIMPLE(X509_CRL_INFO
, lastUpdate
, ASN1_TIME
),
120 ASN1_OPT(X509_CRL_INFO
, nextUpdate
, ASN1_TIME
),
121 ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO
, revoked
, X509_REVOKED
),
122 ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO
, extensions
, X509_EXTENSION
, 0)
123 } ASN1_SEQUENCE_END_enc(X509_CRL_INFO
, X509_CRL_INFO
)
126 * Set CRL entry issuer according to CRL certificate issuer extension. Check
127 * for unhandled critical CRL entry extensions.
130 static int crl_set_issuers(X509_CRL
*crl
)
134 GENERAL_NAMES
*gens
, *gtmp
;
135 STACK_OF(X509_REVOKED
) *revoked
;
137 revoked
= X509_CRL_get_REVOKED(crl
);
140 for (i
= 0; i
< sk_X509_REVOKED_num(revoked
); i
++) {
141 X509_REVOKED
*rev
= sk_X509_REVOKED_value(revoked
, i
);
142 STACK_OF(X509_EXTENSION
) *exts
;
143 ASN1_ENUMERATED
*reason
;
145 gtmp
= X509_REVOKED_get_ext_d2i(rev
,
146 NID_certificate_issuer
, &j
, NULL
);
147 if (!gtmp
&& (j
!= -1)) {
148 crl
->flags
|= EXFLAG_INVALID
;
155 crl
->issuers
= sk_GENERAL_NAMES_new_null();
159 if (!sk_GENERAL_NAMES_push(crl
->issuers
, gtmp
))
164 reason
= X509_REVOKED_get_ext_d2i(rev
, NID_crl_reason
, &j
, NULL
);
165 if (!reason
&& (j
!= -1)) {
166 crl
->flags
|= EXFLAG_INVALID
;
171 rev
->reason
= ASN1_ENUMERATED_get(reason
);
172 ASN1_ENUMERATED_free(reason
);
174 rev
->reason
= CRL_REASON_NONE
;
176 /* Check for critical CRL entry extensions */
178 exts
= rev
->extensions
;
180 for (j
= 0; j
< sk_X509_EXTENSION_num(exts
); j
++) {
181 ext
= sk_X509_EXTENSION_value(exts
, j
);
182 if (X509_EXTENSION_get_critical(ext
)) {
183 if (OBJ_obj2nid(X509_EXTENSION_get_object(ext
)) == NID_certificate_issuer
)
185 crl
->flags
|= EXFLAG_CRITICAL
;
197 * The X509_CRL structure needs a bit of customisation. Cache some extensions
198 * and hash of the whole CRL.
200 static int crl_cb(int operation
, ASN1_VALUE
**pval
, const ASN1_ITEM
*it
,
203 X509_CRL
*crl
= (X509_CRL
*)*pval
;
204 STACK_OF(X509_EXTENSION
) *exts
;
209 case ASN1_OP_NEW_POST
:
214 crl
->idp_reasons
= CRLDP_ALL_REASONS
;
215 crl
->meth
= default_crl_method
;
216 crl
->meth_data
= NULL
;
218 crl
->crl_number
= NULL
;
219 crl
->base_crl_number
= NULL
;
222 case ASN1_OP_D2I_POST
:
223 X509_CRL_digest(crl
, EVP_sha1(), crl
->sha1_hash
, NULL
);
224 crl
->idp
= X509_CRL_get_ext_d2i(crl
,
225 NID_issuing_distribution_point
, NULL
,
228 setup_idp(crl
, crl
->idp
);
230 crl
->akid
= X509_CRL_get_ext_d2i(crl
,
231 NID_authority_key_identifier
, NULL
,
234 crl
->crl_number
= X509_CRL_get_ext_d2i(crl
,
235 NID_crl_number
, NULL
, NULL
);
237 crl
->base_crl_number
= X509_CRL_get_ext_d2i(crl
,
240 /* Delta CRLs must have CRL number */
241 if (crl
->base_crl_number
&& !crl
->crl_number
)
242 crl
->flags
|= EXFLAG_INVALID
;
245 * See if we have any unhandled critical CRL extensions and indicate
246 * this in a flag. We only currently handle IDP so anything else
247 * critical sets the flag. This code accesses the X509_CRL structure
248 * directly: applications shouldn't do this.
251 exts
= crl
->crl
.extensions
;
253 for (idx
= 0; idx
< sk_X509_EXTENSION_num(exts
); idx
++) {
255 ext
= sk_X509_EXTENSION_value(exts
, idx
);
256 nid
= OBJ_obj2nid(X509_EXTENSION_get_object(ext
));
257 if (nid
== NID_freshest_crl
)
258 crl
->flags
|= EXFLAG_FRESHEST
;
259 if (X509_EXTENSION_get_critical(ext
)) {
260 /* We handle IDP and deltas */
261 if ((nid
== NID_issuing_distribution_point
)
262 || (nid
== NID_authority_key_identifier
)
263 || (nid
== NID_delta_crl
))
265 crl
->flags
|= EXFLAG_CRITICAL
;
270 if (!crl_set_issuers(crl
))
273 if (crl
->meth
->crl_init
) {
274 if (crl
->meth
->crl_init(crl
) == 0)
279 case ASN1_OP_FREE_POST
:
280 if (crl
->meth
->crl_free
) {
281 if (!crl
->meth
->crl_free(crl
))
284 AUTHORITY_KEYID_free(crl
->akid
);
285 ISSUING_DIST_POINT_free(crl
->idp
);
286 ASN1_INTEGER_free(crl
->crl_number
);
287 ASN1_INTEGER_free(crl
->base_crl_number
);
288 sk_GENERAL_NAMES_pop_free(crl
->issuers
, GENERAL_NAMES_free
);
294 /* Convert IDP into a more convenient form */
296 static void setup_idp(X509_CRL
*crl
, ISSUING_DIST_POINT
*idp
)
299 /* Set various flags according to IDP */
300 crl
->idp_flags
|= IDP_PRESENT
;
301 if (idp
->onlyuser
> 0) {
303 crl
->idp_flags
|= IDP_ONLYUSER
;
305 if (idp
->onlyCA
> 0) {
307 crl
->idp_flags
|= IDP_ONLYCA
;
309 if (idp
->onlyattr
> 0) {
311 crl
->idp_flags
|= IDP_ONLYATTR
;
315 crl
->idp_flags
|= IDP_INVALID
;
317 if (idp
->indirectCRL
> 0)
318 crl
->idp_flags
|= IDP_INDIRECT
;
320 if (idp
->onlysomereasons
) {
321 crl
->idp_flags
|= IDP_REASONS
;
322 if (idp
->onlysomereasons
->length
> 0)
323 crl
->idp_reasons
= idp
->onlysomereasons
->data
[0];
324 if (idp
->onlysomereasons
->length
> 1)
325 crl
->idp_reasons
|= (idp
->onlysomereasons
->data
[1] << 8);
326 crl
->idp_reasons
&= CRLDP_ALL_REASONS
;
329 DIST_POINT_set_dpname(idp
->distpoint
, X509_CRL_get_issuer(crl
));
332 ASN1_SEQUENCE_ref(X509_CRL
, crl_cb
, CRYPTO_LOCK_X509_CRL
) = {
333 ASN1_EMBED(X509_CRL
, crl
, X509_CRL_INFO
),
334 ASN1_EMBED(X509_CRL
, sig_alg
, X509_ALGOR
),
335 ASN1_EMBED(X509_CRL
, signature
, ASN1_BIT_STRING
)
336 } ASN1_SEQUENCE_END_ref(X509_CRL
, X509_CRL
)
338 IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED
)
340 IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED
)
342 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO
)
344 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL
)
346 IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL
)
348 static int X509_REVOKED_cmp(const X509_REVOKED
*const *a
,
349 const X509_REVOKED
*const *b
)
351 return (ASN1_STRING_cmp((ASN1_STRING
*)&(*a
)->serialNumber
,
352 (ASN1_STRING
*)&(*b
)->serialNumber
));
355 int X509_CRL_add0_revoked(X509_CRL
*crl
, X509_REVOKED
*rev
)
359 if (inf
->revoked
== NULL
)
360 inf
->revoked
= sk_X509_REVOKED_new(X509_REVOKED_cmp
);
361 if (inf
->revoked
== NULL
|| !sk_X509_REVOKED_push(inf
->revoked
, rev
)) {
362 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED
, ERR_R_MALLOC_FAILURE
);
365 inf
->enc
.modified
= 1;
369 int X509_CRL_verify(X509_CRL
*crl
, EVP_PKEY
*r
)
371 if (crl
->meth
->crl_verify
)
372 return crl
->meth
->crl_verify(crl
, r
);
376 int X509_CRL_get0_by_serial(X509_CRL
*crl
,
377 X509_REVOKED
**ret
, ASN1_INTEGER
*serial
)
379 if (crl
->meth
->crl_lookup
)
380 return crl
->meth
->crl_lookup(crl
, ret
, serial
, NULL
);
384 int X509_CRL_get0_by_cert(X509_CRL
*crl
, X509_REVOKED
**ret
, X509
*x
)
386 if (crl
->meth
->crl_lookup
)
387 return crl
->meth
->crl_lookup(crl
, ret
,
388 X509_get_serialNumber(x
),
389 X509_get_issuer_name(x
));
393 static int def_crl_verify(X509_CRL
*crl
, EVP_PKEY
*r
)
395 return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO
),
396 &crl
->sig_alg
, &crl
->signature
, &crl
->crl
, r
));
399 static int crl_revoked_issuer_match(X509_CRL
*crl
, X509_NAME
*nm
,
407 if (!X509_NAME_cmp(nm
, X509_CRL_get_issuer(crl
)))
413 nm
= X509_CRL_get_issuer(crl
);
415 for (i
= 0; i
< sk_GENERAL_NAME_num(rev
->issuer
); i
++) {
416 GENERAL_NAME
*gen
= sk_GENERAL_NAME_value(rev
->issuer
, i
);
417 if (gen
->type
!= GEN_DIRNAME
)
419 if (!X509_NAME_cmp(nm
, gen
->d
.directoryName
))
426 static int def_crl_lookup(X509_CRL
*crl
,
427 X509_REVOKED
**ret
, ASN1_INTEGER
*serial
,
430 X509_REVOKED rtmp
, *rev
;
432 rtmp
.serialNumber
= *serial
;
434 * Sort revoked into serial number order if not already sorted. Do this
435 * under a lock to avoid race condition.
437 if (!sk_X509_REVOKED_is_sorted(crl
->crl
.revoked
)) {
438 CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL
);
439 sk_X509_REVOKED_sort(crl
->crl
.revoked
);
440 CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL
);
442 idx
= sk_X509_REVOKED_find(crl
->crl
.revoked
, &rtmp
);
445 /* Need to look for matching name */
446 for (; idx
< sk_X509_REVOKED_num(crl
->crl
.revoked
); idx
++) {
447 rev
= sk_X509_REVOKED_value(crl
->crl
.revoked
, idx
);
448 if (ASN1_INTEGER_cmp(&rev
->serialNumber
, serial
))
450 if (crl_revoked_issuer_match(crl
, issuer
, rev
)) {
453 if (rev
->reason
== CRL_REASON_REMOVE_FROM_CRL
)
461 void X509_CRL_set_default_method(const X509_CRL_METHOD
*meth
)
464 default_crl_method
= &int_crl_meth
;
466 default_crl_method
= meth
;
469 X509_CRL_METHOD
*X509_CRL_METHOD_new(int (*crl_init
) (X509_CRL
*crl
),
470 int (*crl_free
) (X509_CRL
*crl
),
471 int (*crl_lookup
) (X509_CRL
*crl
,
475 int (*crl_verify
) (X509_CRL
*crl
,
479 m
= OPENSSL_malloc(sizeof(*m
));
482 m
->crl_init
= crl_init
;
483 m
->crl_free
= crl_free
;
484 m
->crl_lookup
= crl_lookup
;
485 m
->crl_verify
= crl_verify
;
486 m
->flags
= X509_CRL_METHOD_DYNAMIC
;
490 void X509_CRL_METHOD_free(X509_CRL_METHOD
*m
)
492 if (!(m
->flags
& X509_CRL_METHOD_DYNAMIC
))
497 void X509_CRL_set_meth_data(X509_CRL
*crl
, void *dat
)
499 crl
->meth_data
= dat
;
502 void *X509_CRL_get_meth_data(X509_CRL
*crl
)
504 return crl
->meth_data
;