1 /* crypto/asn1/x_crl.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/asn1t.h>
62 #include "asn1_locl.h"
63 #include <openssl/x509.h>
64 #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_SIMPLE(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_SIMPLE(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 (ext->critical > 0) {
183 if (OBJ_obj2nid(ext->object) == 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 #ifndef OPENSSL_NO_SHA
224 X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
226 crl->idp = X509_CRL_get_ext_d2i(crl,
227 NID_issuing_distribution_point, NULL,
230 setup_idp(crl, crl->idp);
232 crl->akid = X509_CRL_get_ext_d2i(crl,
233 NID_authority_key_identifier, NULL,
236 crl->crl_number = X509_CRL_get_ext_d2i(crl,
237 NID_crl_number, NULL, NULL);
239 crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
242 /* Delta CRLs must have CRL number */
243 if (crl->base_crl_number && !crl->crl_number)
244 crl->flags |= EXFLAG_INVALID;
247 * See if we have any unhandled critical CRL extensions and indicate
248 * this in a flag. We only currently handle IDP so anything else
249 * critical sets the flag. This code accesses the X509_CRL structure
250 * directly: applications shouldn't do this.
253 exts = crl->crl->extensions;
255 for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
257 ext = sk_X509_EXTENSION_value(exts, idx);
258 nid = OBJ_obj2nid(ext->object);
259 if (nid == NID_freshest_crl)
260 crl->flags |= EXFLAG_FRESHEST;
261 if (ext->critical > 0) {
262 /* We handle IDP and deltas */
263 if ((nid == NID_issuing_distribution_point)
264 || (nid == NID_authority_key_identifier)
265 || (nid == NID_delta_crl))
267 crl->flags |= EXFLAG_CRITICAL;
272 if (!crl_set_issuers(crl))
275 if (crl->meth->crl_init) {
276 if (crl->meth->crl_init(crl) == 0)
281 case ASN1_OP_FREE_POST:
282 if (crl->meth->crl_free) {
283 if (!crl->meth->crl_free(crl))
287 AUTHORITY_KEYID_free(crl->akid);
289 ISSUING_DIST_POINT_free(crl->idp);
290 ASN1_INTEGER_free(crl->crl_number);
291 ASN1_INTEGER_free(crl->base_crl_number);
292 sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
298 /* Convert IDP into a more convenient form */
300 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
303 /* Set various flags according to IDP */
304 crl->idp_flags |= IDP_PRESENT;
305 if (idp->onlyuser > 0) {
307 crl->idp_flags |= IDP_ONLYUSER;
309 if (idp->onlyCA > 0) {
311 crl->idp_flags |= IDP_ONLYCA;
313 if (idp->onlyattr > 0) {
315 crl->idp_flags |= IDP_ONLYATTR;
319 crl->idp_flags |= IDP_INVALID;
321 if (idp->indirectCRL > 0)
322 crl->idp_flags |= IDP_INDIRECT;
324 if (idp->onlysomereasons) {
325 crl->idp_flags |= IDP_REASONS;
326 if (idp->onlysomereasons->length > 0)
327 crl->idp_reasons = idp->onlysomereasons->data[0];
328 if (idp->onlysomereasons->length > 1)
329 crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
330 crl->idp_reasons &= CRLDP_ALL_REASONS;
333 DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
336 ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
337 ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
338 ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
339 ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
340 } ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
342 IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
344 IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
346 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
348 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
350 IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
352 static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
353 const X509_REVOKED *const *b)
355 return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
356 (ASN1_STRING *)(*b)->serialNumber));
359 int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
364 inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
365 if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
366 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
369 inf->enc.modified = 1;
373 int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
375 if (crl->meth->crl_verify)
376 return crl->meth->crl_verify(crl, r);
380 int X509_CRL_get0_by_serial(X509_CRL *crl,
381 X509_REVOKED **ret, ASN1_INTEGER *serial)
383 if (crl->meth->crl_lookup)
384 return crl->meth->crl_lookup(crl, ret, serial, NULL);
388 int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
390 if (crl->meth->crl_lookup)
391 return crl->meth->crl_lookup(crl, ret,
392 X509_get_serialNumber(x),
393 X509_get_issuer_name(x));
397 static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
399 return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
400 crl->sig_alg, crl->signature, crl->crl, r));
403 static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
411 if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
417 nm = X509_CRL_get_issuer(crl);
419 for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
420 GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
421 if (gen->type != GEN_DIRNAME)
423 if (!X509_NAME_cmp(nm, gen->d.directoryName))
430 static int def_crl_lookup(X509_CRL *crl,
431 X509_REVOKED **ret, ASN1_INTEGER *serial,
434 X509_REVOKED rtmp, *rev;
436 rtmp.serialNumber = serial;
438 * Sort revoked into serial number order if not already sorted. Do this
439 * under a lock to avoid race condition.
441 if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) {
442 CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
443 sk_X509_REVOKED_sort(crl->crl->revoked);
444 CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
446 idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
449 /* Need to look for matching name */
450 for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) {
451 rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
452 if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
454 if (crl_revoked_issuer_match(crl, issuer, rev)) {
457 if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
465 void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
468 default_crl_method = &int_crl_meth;
470 default_crl_method = meth;
473 X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
474 int (*crl_free) (X509_CRL *crl),
475 int (*crl_lookup) (X509_CRL *crl,
479 int (*crl_verify) (X509_CRL *crl,
483 m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
486 m->crl_init = crl_init;
487 m->crl_free = crl_free;
488 m->crl_lookup = crl_lookup;
489 m->crl_verify = crl_verify;
490 m->flags = X509_CRL_METHOD_DYNAMIC;
494 void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
496 if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
501 void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
503 crl->meth_data = dat;
506 void *X509_CRL_get_meth_data(X509_CRL *crl)
508 return crl->meth_data;
511 IMPLEMENT_STACK_OF(X509_REVOKED)
513 IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
515 IMPLEMENT_STACK_OF(X509_CRL)
517 IMPLEMENT_ASN1_SET_OF(X509_CRL)