x_crl.c@ 99371

最後變更在這個檔案從99371是 99366,由 vboxsync 提交於 23 月前
openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
檔案大小: 15.9 KB

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1	/*
2	* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3	*
4	* Licensed under the Apache License 2.0 (the "License"). You may not use
5	* this file except in compliance with the License. You can obtain a copy
6	* in the file LICENSE in the source distribution or at
7	* https://www.openssl.org/source/license.html
8	*/
9
10	#include <stdio.h>
11	#include "internal/cryptlib.h"
12	#include <openssl/asn1t.h>
13	#include <openssl/x509.h>
14	#include "crypto/x509.h"
15	#include <openssl/x509v3.h>
16	#include "x509_local.h"
17
18	static int X509_REVOKED_cmp(const X509_REVOKED const a,
19	const X509_REVOKED const b);
20	static int setup_idp(X509_CRL crl, ISSUING_DIST_POINT idp);
21
22	ASN1_SEQUENCE(X509_REVOKED) = {
23	ASN1_EMBED(X509_REVOKED,serialNumber, ASN1_INTEGER),
24	ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
25	ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
26	} ASN1_SEQUENCE_END(X509_REVOKED)
27
28	static int def_crl_verify(X509_CRL crl, EVP_PKEY r);
29	static int def_crl_lookup(X509_CRL *crl,
30	X509_REVOKED *ret, const ASN1_INTEGER serial,
31	const X509_NAME *issuer);
32
33	static X509_CRL_METHOD int_crl_meth = {
34	0,
35	0, 0,
36	def_crl_lookup,
37	def_crl_verify
38	};
39
40	static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
41
42	/*
43	* The X509_CRL_INFO structure needs a bit of customisation. Since we cache
44	* the original encoding the signature won't be affected by reordering of the
45	* revoked field.
46	*/
47	static int crl_inf_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it,
48	void *exarg)
49	{
50	X509_CRL_INFO a = (X509_CRL_INFO )*pval;
51
52	if (!a \|\| !a->revoked)
53	return 1;
54	switch (operation) {
55	/*
56	* Just set cmp function here. We don't sort because that would
57	* affect the output of X509_CRL_print().
58	*/
59	case ASN1_OP_D2I_POST:
60	(void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
61	break;
62	}
63	return 1;
64	}
65
66
67	ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
68	ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
69	ASN1_EMBED(X509_CRL_INFO, sig_alg, X509_ALGOR),
70	ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
71	ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
72	ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
73	ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
74	ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
75	} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
76
77	/*
78	* Set CRL entry issuer according to CRL certificate issuer extension. Check
79	* for unhandled critical CRL entry extensions.
80	*/
81
82	static int crl_set_issuers(X509_CRL *crl)
83	{
84
85	int i, j;
86	GENERAL_NAMES gens, gtmp;
87	STACK_OF(X509_REVOKED) *revoked;
88
89	revoked = X509_CRL_get_REVOKED(crl);
90
91	gens = NULL;
92	for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) {
93	X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
94	STACK_OF(X509_EXTENSION) *exts;
95	ASN1_ENUMERATED *reason;
96	X509_EXTENSION *ext;
97	gtmp = X509_REVOKED_get_ext_d2i(rev,
98	NID_certificate_issuer, &j, NULL);
99	if (!gtmp && (j != -1)) {
100	crl->flags \|= EXFLAG_INVALID;
101	return 1;
102	}
103
104	if (gtmp) {
105	gens = gtmp;
106	if (crl->issuers == NULL) {
107	crl->issuers = sk_GENERAL_NAMES_new_null();
108	if (crl->issuers == NULL) {
109	GENERAL_NAMES_free(gtmp);
110	return 0;
111	}
112	}
113	if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp)) {
114	GENERAL_NAMES_free(gtmp);
115	return 0;
116	}
117	}
118	rev->issuer = gens;
119
120	reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
121	if (!reason && (j != -1)) {
122	crl->flags \|= EXFLAG_INVALID;
123	return 1;
124	}
125
126	if (reason) {
127	rev->reason = ASN1_ENUMERATED_get(reason);
128	ASN1_ENUMERATED_free(reason);
129	} else
130	rev->reason = CRL_REASON_NONE;
131
132	/* Check for critical CRL entry extensions */
133
134	exts = rev->extensions;
135
136	for (j = 0; j < sk_X509_EXTENSION_num(exts); j++) {
137	ext = sk_X509_EXTENSION_value(exts, j);
138	if (X509_EXTENSION_get_critical(ext)) {
139	if (OBJ_obj2nid(X509_EXTENSION_get_object(ext)) == NID_certificate_issuer)
140	continue;
141	crl->flags \|= EXFLAG_CRITICAL;
142	break;
143	}
144	}
145
146	}
147
148	return 1;
149
150	}
151
152	/*
153	* The X509_CRL structure needs a bit of customisation. Cache some extensions
154	* and hash of the whole CRL or set EXFLAG_NO_FINGERPRINT if this fails.
155	*/
156	static int crl_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it,
157	void *exarg)
158	{
159	X509_CRL crl = (X509_CRL )*pval;
160	STACK_OF(X509_EXTENSION) *exts;
161	X509_EXTENSION *ext;
162	int idx, i;
163
164	switch (operation) {
165	case ASN1_OP_D2I_PRE:
166	if (crl->meth->crl_free) {
167	if (!crl->meth->crl_free(crl))
168	return 0;
169	}
170	AUTHORITY_KEYID_free(crl->akid);
171	ISSUING_DIST_POINT_free(crl->idp);
172	ASN1_INTEGER_free(crl->crl_number);
173	ASN1_INTEGER_free(crl->base_crl_number);
174	sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
175	/* fall through */
176
177	case ASN1_OP_NEW_POST:
178	crl->idp = NULL;
179	crl->akid = NULL;
180	crl->flags = 0;
181	crl->idp_flags = 0;
182	crl->idp_reasons = CRLDP_ALL_REASONS;
183	crl->meth = default_crl_method;
184	crl->meth_data = NULL;
185	crl->issuers = NULL;
186	crl->crl_number = NULL;
187	crl->base_crl_number = NULL;
188	break;
189
190	case ASN1_OP_D2I_POST:
191	if (!X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL))
192	crl->flags \|= EXFLAG_NO_FINGERPRINT;
193	crl->idp = X509_CRL_get_ext_d2i(crl,
194	NID_issuing_distribution_point, &i,
195	NULL);
196	if (crl->idp != NULL) {
197	if (!setup_idp(crl, crl->idp))
198	crl->flags \|= EXFLAG_INVALID;
199	}
200	else if (i != -1) {
201	crl->flags \|= EXFLAG_INVALID;
202	}
203
204	crl->akid = X509_CRL_get_ext_d2i(crl,
205	NID_authority_key_identifier, &i,
206	NULL);
207	if (crl->akid == NULL && i != -1)
208	crl->flags \|= EXFLAG_INVALID;
209
210	crl->crl_number = X509_CRL_get_ext_d2i(crl,
211	NID_crl_number, &i, NULL);
212	if (crl->crl_number == NULL && i != -1)
213	crl->flags \|= EXFLAG_INVALID;
214
215	crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
216	NID_delta_crl, &i,
217	NULL);
218	if (crl->base_crl_number == NULL && i != -1)
219	crl->flags \|= EXFLAG_INVALID;
220	/* Delta CRLs must have CRL number */
221	if (crl->base_crl_number && !crl->crl_number)
222	crl->flags \|= EXFLAG_INVALID;
223
224	/*
225	* See if we have any unhandled critical CRL extensions and indicate
226	* this in a flag. We only currently handle IDP so anything else
227	* critical sets the flag. This code accesses the X509_CRL structure
228	* directly: applications shouldn't do this.
229	*/
230
231	exts = crl->crl.extensions;
232
233	for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
234	int nid;
235	ext = sk_X509_EXTENSION_value(exts, idx);
236	nid = OBJ_obj2nid(X509_EXTENSION_get_object(ext));
237	if (nid == NID_freshest_crl)
238	crl->flags \|= EXFLAG_FRESHEST;
239	if (X509_EXTENSION_get_critical(ext)) {
240	/* We handle IDP and deltas */
241	if ((nid == NID_issuing_distribution_point)
242	\|\| (nid == NID_authority_key_identifier)
243	\|\| (nid == NID_delta_crl))
244	continue;
245	crl->flags \|= EXFLAG_CRITICAL;
246	break;
247	}
248	}
249
250	if (!crl_set_issuers(crl))
251	return 0;
252
253	if (crl->meth->crl_init) {
254	if (crl->meth->crl_init(crl) == 0)
255	return 0;
256	}
257
258	crl->flags \|= EXFLAG_SET;
259	break;
260
261	case ASN1_OP_FREE_POST:
262	if (crl->meth != NULL && crl->meth->crl_free != NULL) {
263	if (!crl->meth->crl_free(crl))
264	return 0;
265	}
266	AUTHORITY_KEYID_free(crl->akid);
267	ISSUING_DIST_POINT_free(crl->idp);
268	ASN1_INTEGER_free(crl->crl_number);
269	ASN1_INTEGER_free(crl->base_crl_number);
270	sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
271	OPENSSL_free(crl->propq);
272	break;
273	case ASN1_OP_DUP_POST:
274	{
275	X509_CRL *old = exarg;
276
277	if (!ossl_x509_crl_set0_libctx(crl, old->libctx, old->propq))
278	return 0;
279	}
280	break;
281	}
282	return 1;
283	}
284
285	/* Convert IDP into a more convenient form */
286
287	static int setup_idp(X509_CRL crl, ISSUING_DIST_POINT idp)
288	{
289	int idp_only = 0;
290
291	/* Set various flags according to IDP */
292	crl->idp_flags \|= IDP_PRESENT;
293	if (idp->onlyuser > 0) {
294	idp_only++;
295	crl->idp_flags \|= IDP_ONLYUSER;
296	}
297	if (idp->onlyCA > 0) {
298	idp_only++;
299	crl->idp_flags \|= IDP_ONLYCA;
300	}
301	if (idp->onlyattr > 0) {
302	idp_only++;
303	crl->idp_flags \|= IDP_ONLYATTR;
304	}
305
306	if (idp_only > 1)
307	crl->idp_flags \|= IDP_INVALID;
308
309	if (idp->indirectCRL > 0)
310	crl->idp_flags \|= IDP_INDIRECT;
311
312	if (idp->onlysomereasons) {
313	crl->idp_flags \|= IDP_REASONS;
314	if (idp->onlysomereasons->length > 0)
315	crl->idp_reasons = idp->onlysomereasons->data[0];
316	if (idp->onlysomereasons->length > 1)
317	crl->idp_reasons \|= (idp->onlysomereasons->data[1] << 8);
318	crl->idp_reasons &= CRLDP_ALL_REASONS;
319	}
320
321	return DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
322	}
323
324	ASN1_SEQUENCE_ref(X509_CRL, crl_cb) = {
325	ASN1_EMBED(X509_CRL, crl, X509_CRL_INFO),
326	ASN1_EMBED(X509_CRL, sig_alg, X509_ALGOR),
327	ASN1_EMBED(X509_CRL, signature, ASN1_BIT_STRING)
328	} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
329
330	IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
331
332	IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
333
334	IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
335
336	IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
337
338	IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
339
340	static int X509_REVOKED_cmp(const X509_REVOKED const a,
341	const X509_REVOKED const b)
342	{
343	return (ASN1_STRING_cmp((ASN1_STRING )&(a)->serialNumber,
344	(ASN1_STRING )&(b)->serialNumber));
345	}
346
347	X509_CRL X509_CRL_new_ex(OSSL_LIB_CTX libctx, const char *propq)
348	{
349	X509_CRL *crl = NULL;
350
351	crl = (X509_CRL *)ASN1_item_new((X509_CRL_it()));
352	if (!ossl_x509_crl_set0_libctx(crl, libctx, propq)) {
353	X509_CRL_free(crl);
354	crl = NULL;
355	}
356	return crl;
357	}
358
359	int X509_CRL_add0_revoked(X509_CRL crl, X509_REVOKED rev)
360	{
361	X509_CRL_INFO *inf;
362
363	inf = &crl->crl;
364	if (inf->revoked == NULL)
365	inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
366	if (inf->revoked == NULL \|\| !sk_X509_REVOKED_push(inf->revoked, rev)) {
367	ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
368	return 0;
369	}
370	inf->enc.modified = 1;
371	return 1;
372	}
373
374	int 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
381	int X509_CRL_get0_by_serial(X509_CRL *crl,
382	X509_REVOKED *ret, const 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
389	int 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_get0_serialNumber(x),
394	X509_get_issuer_name(x));
395	return 0;
396	}
397
398	static int def_crl_verify(X509_CRL crl, EVP_PKEY r)
399	{
400	return ASN1_item_verify_ex(ASN1_ITEM_rptr(X509_CRL_INFO),
401	&crl->sig_alg, &crl->signature, &crl->crl, NULL,
402	r, crl->libctx, crl->propq);
403	}
404
405	static int crl_revoked_issuer_match(X509_CRL crl, const X509_NAME nm,
406	X509_REVOKED *rev)
407	{
408	int i;
409
410	if (!rev->issuer) {
411	if (!nm)
412	return 1;
413	if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
414	return 1;
415	return 0;
416	}
417
418	if (!nm)
419	nm = X509_CRL_get_issuer(crl);
420
421	for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
422	GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
423	if (gen->type != GEN_DIRNAME)
424	continue;
425	if (!X509_NAME_cmp(nm, gen->d.directoryName))
426	return 1;
427	}
428	return 0;
429
430	}
431
432	static int def_crl_lookup(X509_CRL *crl,
433	X509_REVOKED *ret, const ASN1_INTEGER serial,
434	const X509_NAME *issuer)
435	{
436	X509_REVOKED rtmp, *rev;
437	int idx, num;
438
439	if (crl->crl.revoked == NULL)
440	return 0;
441
442	/*
443	* Sort revoked into serial number order if not already sorted. Do this
444	* under a lock to avoid race condition.
445	*/
446	if (!sk_X509_REVOKED_is_sorted(crl->crl.revoked)) {
447	if (!CRYPTO_THREAD_write_lock(crl->lock))
448	return 0;
449	sk_X509_REVOKED_sort(crl->crl.revoked);
450	CRYPTO_THREAD_unlock(crl->lock);
451	}
452	rtmp.serialNumber = *serial;
453	idx = sk_X509_REVOKED_find(crl->crl.revoked, &rtmp);
454	if (idx < 0)
455	return 0;
456	/* Need to look for matching name */
457	for (num = sk_X509_REVOKED_num(crl->crl.revoked); idx < num; idx++) {
458	rev = sk_X509_REVOKED_value(crl->crl.revoked, idx);
459	if (ASN1_INTEGER_cmp(&rev->serialNumber, serial))
460	return 0;
461	if (crl_revoked_issuer_match(crl, issuer, rev)) {
462	if (ret)
463	*ret = rev;
464	if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
465	return 2;
466	return 1;
467	}
468	}
469	return 0;
470	}
471
472	void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
473	{
474	if (meth == NULL)
475	default_crl_method = &int_crl_meth;
476	else
477	default_crl_method = meth;
478	}
479
480	X509_CRL_METHOD X509_CRL_METHOD_new(int (crl_init) (X509_CRL *crl),
481	int (crl_free) (X509_CRL crl),
482	int (crl_lookup) (X509_CRL crl,
483	X509_REVOKED **ret,
484	const ASN1_INTEGER *ser,
485	const X509_NAME *issuer),
486	int (crl_verify) (X509_CRL crl,
487	EVP_PKEY *pk))
488	{
489	X509_CRL_METHOD m = OPENSSL_malloc(sizeof(m));
490
491	if (m == NULL) {
492	ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
493	return NULL;
494	}
495	m->crl_init = crl_init;
496	m->crl_free = crl_free;
497	m->crl_lookup = crl_lookup;
498	m->crl_verify = crl_verify;
499	m->flags = X509_CRL_METHOD_DYNAMIC;
500	return m;
501	}
502
503	void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
504	{
505	if (m == NULL \|\| !(m->flags & X509_CRL_METHOD_DYNAMIC))
506	return;
507	OPENSSL_free(m);
508	}
509
510	void X509_CRL_set_meth_data(X509_CRL crl, void dat)
511	{
512	crl->meth_data = dat;
513	}
514
515	void X509_CRL_get_meth_data(X509_CRL crl)
516	{
517	return crl->meth_data;
518	}
519
520	int ossl_x509_crl_set0_libctx(X509_CRL x, OSSL_LIB_CTX libctx,
521	const char *propq)
522	{
523	if (x != NULL) {
524	x->libctx = libctx;
525	OPENSSL_free(x->propq);
526	x->propq = NULL;
527	if (propq != NULL) {
528	x->propq = OPENSSL_strdup(propq);
529	if (x->propq == NULL)
530	return 0;
531	}
532	}
533	return 1;
534	}

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source: vbox/trunk/src/libs/openssl-3.1.0/crypto/x509/x_crl.c@ 99371

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