1 /* crypto/x509/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.]
60 #include "internal/cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63 #include "internal/x509_int.h"
64 #include <openssl/x509v3.h>
67 static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
68 const X509_REVOKED *const *b);
69 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
71 ASN1_SEQUENCE(X509_REVOKED) = {
72 ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
73 ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
74 ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
75 } ASN1_SEQUENCE_END(X509_REVOKED)
77 static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
78 static int def_crl_lookup(X509_CRL *crl,
79 X509_REVOKED **ret, ASN1_INTEGER *serial,
82 static X509_CRL_METHOD int_crl_meth = {
89 static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
92 * The X509_CRL_INFO structure needs a bit of customisation. Since we cache
93 * the original encoding the signature wont be affected by reordering of the
96 static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
99 X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
101 if (!a || !a->revoked)
105 * Just set cmp function here. We don't sort because that would
106 * affect the output of X509_CRL_print().
108 case ASN1_OP_D2I_POST:
109 (void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
116 ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
117 ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
118 ASN1_EMBED(X509_CRL_INFO, sig_alg, X509_ALGOR),
119 ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
120 ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
121 ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
122 ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
123 ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
124 } ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
127 * Set CRL entry issuer according to CRL certificate issuer extension. Check
128 * for unhandled critical CRL entry extensions.
131 static int crl_set_issuers(X509_CRL *crl)
135 GENERAL_NAMES *gens, *gtmp;
136 STACK_OF(X509_REVOKED) *revoked;
138 revoked = X509_CRL_get_REVOKED(crl);
141 for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) {
142 X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
143 STACK_OF(X509_EXTENSION) *exts;
144 ASN1_ENUMERATED *reason;
146 gtmp = X509_REVOKED_get_ext_d2i(rev,
147 NID_certificate_issuer, &j, NULL);
148 if (!gtmp && (j != -1)) {
149 crl->flags |= EXFLAG_INVALID;
156 crl->issuers = sk_GENERAL_NAMES_new_null();
160 if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
165 reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
166 if (!reason && (j != -1)) {
167 crl->flags |= EXFLAG_INVALID;
172 rev->reason = ASN1_ENUMERATED_get(reason);
173 ASN1_ENUMERATED_free(reason);
175 rev->reason = CRL_REASON_NONE;
177 /* Check for critical CRL entry extensions */
179 exts = rev->extensions;
181 for (j = 0; j < sk_X509_EXTENSION_num(exts); j++) {
182 ext = sk_X509_EXTENSION_value(exts, j);
183 if (X509_EXTENSION_get_critical(ext)) {
184 if (OBJ_obj2nid(X509_EXTENSION_get_object(ext)) == NID_certificate_issuer)
186 crl->flags |= EXFLAG_CRITICAL;
198 * The X509_CRL structure needs a bit of customisation. Cache some extensions
199 * and hash of the whole CRL.
201 static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
204 X509_CRL *crl = (X509_CRL *)*pval;
205 STACK_OF(X509_EXTENSION) *exts;
210 case ASN1_OP_NEW_POST:
215 crl->idp_reasons = CRLDP_ALL_REASONS;
216 crl->meth = default_crl_method;
217 crl->meth_data = NULL;
219 crl->crl_number = NULL;
220 crl->base_crl_number = NULL;
223 case ASN1_OP_D2I_POST:
224 X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
225 crl->idp = X509_CRL_get_ext_d2i(crl,
226 NID_issuing_distribution_point, NULL,
229 setup_idp(crl, crl->idp);
231 crl->akid = X509_CRL_get_ext_d2i(crl,
232 NID_authority_key_identifier, NULL,
235 crl->crl_number = X509_CRL_get_ext_d2i(crl,
236 NID_crl_number, NULL, NULL);
238 crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
241 /* Delta CRLs must have CRL number */
242 if (crl->base_crl_number && !crl->crl_number)
243 crl->flags |= EXFLAG_INVALID;
246 * See if we have any unhandled critical CRL extensions and indicate
247 * this in a flag. We only currently handle IDP so anything else
248 * critical sets the flag. This code accesses the X509_CRL structure
249 * directly: applications shouldn't do this.
252 exts = crl->crl.extensions;
254 for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
256 ext = sk_X509_EXTENSION_value(exts, idx);
257 nid = OBJ_obj2nid(X509_EXTENSION_get_object(ext));
258 if (nid == NID_freshest_crl)
259 crl->flags |= EXFLAG_FRESHEST;
260 if (X509_EXTENSION_get_critical(ext)) {
261 /* We handle IDP and deltas */
262 if ((nid == NID_issuing_distribution_point)
263 || (nid == NID_authority_key_identifier)
264 || (nid == NID_delta_crl))
266 crl->flags |= EXFLAG_CRITICAL;
271 if (!crl_set_issuers(crl))
274 if (crl->meth->crl_init) {
275 if (crl->meth->crl_init(crl) == 0)
280 case ASN1_OP_FREE_POST:
281 if (crl->meth->crl_free) {
282 if (!crl->meth->crl_free(crl))
285 AUTHORITY_KEYID_free(crl->akid);
286 ISSUING_DIST_POINT_free(crl->idp);
287 ASN1_INTEGER_free(crl->crl_number);
288 ASN1_INTEGER_free(crl->base_crl_number);
289 sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
295 /* Convert IDP into a more convenient form */
297 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
300 /* Set various flags according to IDP */
301 crl->idp_flags |= IDP_PRESENT;
302 if (idp->onlyuser > 0) {
304 crl->idp_flags |= IDP_ONLYUSER;
306 if (idp->onlyCA > 0) {
308 crl->idp_flags |= IDP_ONLYCA;
310 if (idp->onlyattr > 0) {
312 crl->idp_flags |= IDP_ONLYATTR;
316 crl->idp_flags |= IDP_INVALID;
318 if (idp->indirectCRL > 0)
319 crl->idp_flags |= IDP_INDIRECT;
321 if (idp->onlysomereasons) {
322 crl->idp_flags |= IDP_REASONS;
323 if (idp->onlysomereasons->length > 0)
324 crl->idp_reasons = idp->onlysomereasons->data[0];
325 if (idp->onlysomereasons->length > 1)
326 crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
327 crl->idp_reasons &= CRLDP_ALL_REASONS;
330 DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
333 ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
334 ASN1_EMBED(X509_CRL, crl, X509_CRL_INFO),
335 ASN1_EMBED(X509_CRL, sig_alg, X509_ALGOR),
336 ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
337 } ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
339 IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
341 IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
343 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
345 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
347 IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
349 static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
350 const X509_REVOKED *const *b)
352 return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
353 (ASN1_STRING *)(*b)->serialNumber));
356 int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
361 inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
362 if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
363 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
366 inf->enc.modified = 1;
370 int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
372 if (crl->meth->crl_verify)
373 return crl->meth->crl_verify(crl, r);
377 int X509_CRL_get0_by_serial(X509_CRL *crl,
378 X509_REVOKED **ret, ASN1_INTEGER *serial)
380 if (crl->meth->crl_lookup)
381 return crl->meth->crl_lookup(crl, ret, serial, NULL);
385 int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
387 if (crl->meth->crl_lookup)
388 return crl->meth->crl_lookup(crl, ret,
389 X509_get_serialNumber(x),
390 X509_get_issuer_name(x));
394 static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
396 return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
397 &crl->sig_alg, crl->signature, &crl->crl, r));
400 static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
408 if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
414 nm = X509_CRL_get_issuer(crl);
416 for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
417 GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
418 if (gen->type != GEN_DIRNAME)
420 if (!X509_NAME_cmp(nm, gen->d.directoryName))
427 static int def_crl_lookup(X509_CRL *crl,
428 X509_REVOKED **ret, ASN1_INTEGER *serial,
431 X509_REVOKED rtmp, *rev;
433 rtmp.serialNumber = serial;
435 * Sort revoked into serial number order if not already sorted. Do this
436 * under a lock to avoid race condition.
438 if (!sk_X509_REVOKED_is_sorted(crl->crl.revoked)) {
439 CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
440 sk_X509_REVOKED_sort(crl->crl.revoked);
441 CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
443 idx = sk_X509_REVOKED_find(crl->crl.revoked, &rtmp);
446 /* Need to look for matching name */
447 for (; idx < sk_X509_REVOKED_num(crl->crl.revoked); idx++) {
448 rev = sk_X509_REVOKED_value(crl->crl.revoked, idx);
449 if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
451 if (crl_revoked_issuer_match(crl, issuer, rev)) {
454 if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
462 void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
465 default_crl_method = &int_crl_meth;
467 default_crl_method = meth;
470 X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
471 int (*crl_free) (X509_CRL *crl),
472 int (*crl_lookup) (X509_CRL *crl,
476 int (*crl_verify) (X509_CRL *crl,
480 m = OPENSSL_malloc(sizeof(*m));
483 m->crl_init = crl_init;
484 m->crl_free = crl_free;
485 m->crl_lookup = crl_lookup;
486 m->crl_verify = crl_verify;
487 m->flags = X509_CRL_METHOD_DYNAMIC;
491 void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
493 if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
498 void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
500 crl->meth_data = dat;
503 void *X509_CRL_get_meth_data(X509_CRL *crl)
505 return crl->meth_data;