]> git.proxmox.com Git - efi-boot-shim.git/blame - Cryptlib/OpenSSL/crypto/asn1/x_crl.c
New upstream version 15+1531942534.dd3230d
[efi-boot-shim.git] / Cryptlib / OpenSSL / crypto / asn1 / x_crl.c
CommitLineData
b6f94dbe
MTL
1/* crypto/asn1/x_crl.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
d3819813 22 *
b6f94dbe
MTL
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
3e575651
SL
57 */
58
59#include <stdio.h>
b6f94dbe 60#include "cryptlib.h"
3e575651 61#include <openssl/asn1t.h>
b6f94dbe 62#include "asn1_locl.h"
3e575651 63#include <openssl/x509.h>
d3819813 64#include <openssl/x509v3.h>
3e575651 65
d3819813
MTL
66static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
67 const X509_REVOKED *const *b);
68static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
3e575651
SL
69
70ASN1_SEQUENCE(X509_REVOKED) = {
b6f94dbe 71 ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
d3819813
MTL
72 ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
73 ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
3e575651
SL
74} ASN1_SEQUENCE_END(X509_REVOKED)
75
d3819813
MTL
76static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
77static int def_crl_lookup(X509_CRL *crl,
78 X509_REVOKED **ret, ASN1_INTEGER *serial,
79 X509_NAME *issuer);
80
81static X509_CRL_METHOD int_crl_meth = {
82 0,
83 0, 0,
84 def_crl_lookup,
85 def_crl_verify
86};
87
88static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
89
90/*
91 * The X509_CRL_INFO structure needs a bit of customisation. Since we cache
b6f94dbe 92 * the original encoding the signature wont be affected by reordering of the
d3819813 93 * revoked field.
3e575651 94 */
d3819813
MTL
95static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
96 void *exarg)
3e575651 97{
d3819813 98 X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
3e575651 99
d3819813
MTL
100 if (!a || !a->revoked)
101 return 1;
102 switch (operation) {
103 /*
104 * Just set cmp function here. We don't sort because that would
105 * affect the output of X509_CRL_print().
106 */
107 case ASN1_OP_D2I_POST:
108 (void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
109 break;
110 }
111 return 1;
3e575651
SL
112}
113
114
115ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
d3819813 116 ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
b6f94dbe 117 ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
d3819813
MTL
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)
3e575651
SL
123} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
124
d3819813
MTL
125/*
126 * Set CRL entry issuer according to CRL certificate issuer extension. Check
127 * for unhandled critical CRL entry extensions.
128 */
129
130static int crl_set_issuers(X509_CRL *crl)
131{
132
133 int i, j;
134 GENERAL_NAMES *gens, *gtmp;
135 STACK_OF(X509_REVOKED) *revoked;
136
137 revoked = X509_CRL_get_REVOKED(crl);
138
139 gens = NULL;
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;
144 X509_EXTENSION *ext;
145 gtmp = X509_REVOKED_get_ext_d2i(rev,
146 NID_certificate_issuer, &j, NULL);
147 if (!gtmp && (j != -1)) {
148 crl->flags |= EXFLAG_INVALID;
149 return 1;
150 }
151
152 if (gtmp) {
153 gens = gtmp;
154 if (!crl->issuers) {
155 crl->issuers = sk_GENERAL_NAMES_new_null();
156 if (!crl->issuers)
157 return 0;
158 }
159 if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
160 return 0;
161 }
162 rev->issuer = gens;
163
164 reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
165 if (!reason && (j != -1)) {
166 crl->flags |= EXFLAG_INVALID;
167 return 1;
168 }
169
170 if (reason) {
171 rev->reason = ASN1_ENUMERATED_get(reason);
172 ASN1_ENUMERATED_free(reason);
173 } else
174 rev->reason = CRL_REASON_NONE;
175
176 /* Check for critical CRL entry extensions */
177
178 exts = rev->extensions;
179
180 for (j = 0; j < sk_X509_EXTENSION_num(exts); j++) {
181 ext = sk_X509_EXTENSION_value(exts, j);
b6f94dbe
MTL
182 if (ext->critical > 0) {
183 if (OBJ_obj2nid(ext->object) == NID_certificate_issuer)
d3819813
MTL
184 continue;
185 crl->flags |= EXFLAG_CRITICAL;
186 break;
187 }
188 }
189
190 }
191
192 return 1;
193
194}
195
196/*
197 * The X509_CRL structure needs a bit of customisation. Cache some extensions
198 * and hash of the whole CRL.
199 */
200static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
201 void *exarg)
202{
203 X509_CRL *crl = (X509_CRL *)*pval;
204 STACK_OF(X509_EXTENSION) *exts;
205 X509_EXTENSION *ext;
206 int idx;
207
208 switch (operation) {
209 case ASN1_OP_NEW_POST:
210 crl->idp = NULL;
211 crl->akid = NULL;
212 crl->flags = 0;
213 crl->idp_flags = 0;
214 crl->idp_reasons = CRLDP_ALL_REASONS;
215 crl->meth = default_crl_method;
216 crl->meth_data = NULL;
217 crl->issuers = NULL;
218 crl->crl_number = NULL;
219 crl->base_crl_number = NULL;
220 break;
221
222 case ASN1_OP_D2I_POST:
b6f94dbe 223#ifndef OPENSSL_NO_SHA
d3819813 224 X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
b6f94dbe 225#endif
d3819813
MTL
226 crl->idp = X509_CRL_get_ext_d2i(crl,
227 NID_issuing_distribution_point, NULL,
228 NULL);
229 if (crl->idp)
230 setup_idp(crl, crl->idp);
231
232 crl->akid = X509_CRL_get_ext_d2i(crl,
233 NID_authority_key_identifier, NULL,
234 NULL);
235
236 crl->crl_number = X509_CRL_get_ext_d2i(crl,
237 NID_crl_number, NULL, NULL);
238
239 crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
240 NID_delta_crl, NULL,
241 NULL);
242 /* Delta CRLs must have CRL number */
243 if (crl->base_crl_number && !crl->crl_number)
244 crl->flags |= EXFLAG_INVALID;
245
246 /*
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.
251 */
252
b6f94dbe 253 exts = crl->crl->extensions;
d3819813
MTL
254
255 for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
256 int nid;
b6f94dbe 257
d3819813 258 ext = sk_X509_EXTENSION_value(exts, idx);
b6f94dbe 259 nid = OBJ_obj2nid(ext->object);
d3819813
MTL
260 if (nid == NID_freshest_crl)
261 crl->flags |= EXFLAG_FRESHEST;
b6f94dbe 262 if (ext->critical > 0) {
d3819813
MTL
263 /* We handle IDP and deltas */
264 if ((nid == NID_issuing_distribution_point)
265 || (nid == NID_authority_key_identifier)
266 || (nid == NID_delta_crl))
f4173af1 267 continue;
d3819813
MTL
268 crl->flags |= EXFLAG_CRITICAL;
269 break;
270 }
271 }
272
273 if (!crl_set_issuers(crl))
274 return 0;
275
276 if (crl->meth->crl_init) {
277 if (crl->meth->crl_init(crl) == 0)
278 return 0;
279 }
280 break;
281
282 case ASN1_OP_FREE_POST:
283 if (crl->meth->crl_free) {
284 if (!crl->meth->crl_free(crl))
285 return 0;
286 }
b6f94dbe
MTL
287 if (crl->akid)
288 AUTHORITY_KEYID_free(crl->akid);
289 if (crl->idp)
290 ISSUING_DIST_POINT_free(crl->idp);
d3819813
MTL
291 ASN1_INTEGER_free(crl->crl_number);
292 ASN1_INTEGER_free(crl->base_crl_number);
293 sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
294 break;
295 }
296 return 1;
297}
298
299/* Convert IDP into a more convenient form */
300
301static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
302{
303 int idp_only = 0;
304 /* Set various flags according to IDP */
305 crl->idp_flags |= IDP_PRESENT;
306 if (idp->onlyuser > 0) {
307 idp_only++;
308 crl->idp_flags |= IDP_ONLYUSER;
309 }
310 if (idp->onlyCA > 0) {
311 idp_only++;
312 crl->idp_flags |= IDP_ONLYCA;
313 }
314 if (idp->onlyattr > 0) {
315 idp_only++;
316 crl->idp_flags |= IDP_ONLYATTR;
317 }
318
319 if (idp_only > 1)
320 crl->idp_flags |= IDP_INVALID;
321
322 if (idp->indirectCRL > 0)
323 crl->idp_flags |= IDP_INDIRECT;
324
325 if (idp->onlysomereasons) {
326 crl->idp_flags |= IDP_REASONS;
327 if (idp->onlysomereasons->length > 0)
328 crl->idp_reasons = idp->onlysomereasons->data[0];
329 if (idp->onlysomereasons->length > 1)
330 crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
331 crl->idp_reasons &= CRLDP_ALL_REASONS;
332 }
333
334 DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
335}
336
b6f94dbe
MTL
337ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
338 ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
339 ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
340 ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
3e575651
SL
341} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
342
343IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
d3819813
MTL
344
345IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
346
3e575651 347IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
d3819813 348
3e575651 349IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
d3819813 350
3e575651
SL
351IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
352
d3819813
MTL
353static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
354 const X509_REVOKED *const *b)
355{
b6f94dbe
MTL
356 return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
357 (ASN1_STRING *)(*b)->serialNumber));
d3819813 358}
3e575651
SL
359
360int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
361{
d3819813 362 X509_CRL_INFO *inf;
b6f94dbe
MTL
363 inf = crl->crl;
364 if (!inf->revoked)
d3819813 365 inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
b6f94dbe 366 if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
d3819813
MTL
367 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
368 return 0;
369 }
370 inf->enc.modified = 1;
371 return 1;
372}
373
374int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
375{
376 if (crl->meth->crl_verify)
377 return crl->meth->crl_verify(crl, r);
378 return 0;
379}
380
381int X509_CRL_get0_by_serial(X509_CRL *crl,
382 X509_REVOKED **ret, ASN1_INTEGER *serial)
383{
384 if (crl->meth->crl_lookup)
385 return crl->meth->crl_lookup(crl, ret, serial, NULL);
386 return 0;
387}
388
389int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
390{
391 if (crl->meth->crl_lookup)
392 return crl->meth->crl_lookup(crl, ret,
393 X509_get_serialNumber(x),
394 X509_get_issuer_name(x));
395 return 0;
396}
397
398static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
399{
400 return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
b6f94dbe 401 crl->sig_alg, crl->signature, crl->crl, r));
d3819813
MTL
402}
403
404static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
405 X509_REVOKED *rev)
406{
407 int i;
408
409 if (!rev->issuer) {
410 if (!nm)
411 return 1;
412 if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
413 return 1;
414 return 0;
415 }
416
417 if (!nm)
418 nm = X509_CRL_get_issuer(crl);
419
420 for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
421 GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
422 if (gen->type != GEN_DIRNAME)
423 continue;
424 if (!X509_NAME_cmp(nm, gen->d.directoryName))
425 return 1;
426 }
427 return 0;
428
429}
430
431static int def_crl_lookup(X509_CRL *crl,
432 X509_REVOKED **ret, ASN1_INTEGER *serial,
433 X509_NAME *issuer)
434{
435 X509_REVOKED rtmp, *rev;
436 int idx;
b6f94dbe 437 rtmp.serialNumber = serial;
d3819813
MTL
438 /*
439 * Sort revoked into serial number order if not already sorted. Do this
440 * under a lock to avoid race condition.
441 */
b6f94dbe
MTL
442 if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) {
443 CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
444 sk_X509_REVOKED_sort(crl->crl->revoked);
445 CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
d3819813 446 }
b6f94dbe 447 idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
d3819813
MTL
448 if (idx < 0)
449 return 0;
450 /* Need to look for matching name */
b6f94dbe
MTL
451 for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) {
452 rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
453 if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
d3819813
MTL
454 return 0;
455 if (crl_revoked_issuer_match(crl, issuer, rev)) {
456 if (ret)
457 *ret = rev;
458 if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
459 return 2;
460 return 1;
461 }
462 }
463 return 0;
464}
465
466void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
467{
468 if (meth == NULL)
469 default_crl_method = &int_crl_meth;
470 else
471 default_crl_method = meth;
472}
473
474X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
475 int (*crl_free) (X509_CRL *crl),
476 int (*crl_lookup) (X509_CRL *crl,
477 X509_REVOKED **ret,
478 ASN1_INTEGER *ser,
479 X509_NAME *issuer),
480 int (*crl_verify) (X509_CRL *crl,
481 EVP_PKEY *pk))
482{
483 X509_CRL_METHOD *m;
b6f94dbe
MTL
484 m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
485 if (!m)
d3819813
MTL
486 return NULL;
487 m->crl_init = crl_init;
488 m->crl_free = crl_free;
489 m->crl_lookup = crl_lookup;
490 m->crl_verify = crl_verify;
491 m->flags = X509_CRL_METHOD_DYNAMIC;
492 return m;
493}
494
495void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
496{
b6f94dbe 497 if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
d3819813
MTL
498 return;
499 OPENSSL_free(m);
500}
501
502void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
503{
504 crl->meth_data = dat;
505}
506
507void *X509_CRL_get_meth_data(X509_CRL *crl)
508{
509 return crl->meth_data;
3e575651 510}
b6f94dbe
MTL
511
512IMPLEMENT_STACK_OF(X509_REVOKED)
513
514IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
515
516IMPLEMENT_STACK_OF(X509_CRL)
517
518IMPLEMENT_ASN1_SET_OF(X509_CRL)