519 lines
17 KiB
C
519 lines
17 KiB
C
/* crypto/asn1/x_crl.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/asn1t.h>
|
|
#include "asn1_locl.h"
|
|
#include <openssl/x509.h>
|
|
#include <openssl/x509v3.h>
|
|
|
|
static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
|
|
const X509_REVOKED *const *b);
|
|
static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
|
|
|
|
ASN1_SEQUENCE(X509_REVOKED) = {
|
|
ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
|
|
ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
|
|
ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
|
|
} ASN1_SEQUENCE_END(X509_REVOKED)
|
|
|
|
static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
|
|
static int def_crl_lookup(X509_CRL *crl,
|
|
X509_REVOKED **ret, ASN1_INTEGER *serial,
|
|
X509_NAME *issuer);
|
|
|
|
static X509_CRL_METHOD int_crl_meth = {
|
|
0,
|
|
0, 0,
|
|
def_crl_lookup,
|
|
def_crl_verify
|
|
};
|
|
|
|
static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
|
|
|
|
/*
|
|
* The X509_CRL_INFO structure needs a bit of customisation. Since we cache
|
|
* the original encoding the signature wont be affected by reordering of the
|
|
* revoked field.
|
|
*/
|
|
static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
|
|
void *exarg)
|
|
{
|
|
X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
|
|
|
|
if (!a || !a->revoked)
|
|
return 1;
|
|
switch (operation) {
|
|
/*
|
|
* Just set cmp function here. We don't sort because that would
|
|
* affect the output of X509_CRL_print().
|
|
*/
|
|
case ASN1_OP_D2I_POST:
|
|
(void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
|
|
ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
|
|
ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
|
|
ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
|
|
ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
|
|
ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
|
|
ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
|
|
ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
|
|
} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
|
|
|
|
/*
|
|
* Set CRL entry issuer according to CRL certificate issuer extension. Check
|
|
* for unhandled critical CRL entry extensions.
|
|
*/
|
|
|
|
static int crl_set_issuers(X509_CRL *crl)
|
|
{
|
|
|
|
int i, j;
|
|
GENERAL_NAMES *gens, *gtmp;
|
|
STACK_OF(X509_REVOKED) *revoked;
|
|
|
|
revoked = X509_CRL_get_REVOKED(crl);
|
|
|
|
gens = NULL;
|
|
for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) {
|
|
X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
|
|
STACK_OF(X509_EXTENSION) *exts;
|
|
ASN1_ENUMERATED *reason;
|
|
X509_EXTENSION *ext;
|
|
gtmp = X509_REVOKED_get_ext_d2i(rev,
|
|
NID_certificate_issuer, &j, NULL);
|
|
if (!gtmp && (j != -1)) {
|
|
crl->flags |= EXFLAG_INVALID;
|
|
return 1;
|
|
}
|
|
|
|
if (gtmp) {
|
|
gens = gtmp;
|
|
if (!crl->issuers) {
|
|
crl->issuers = sk_GENERAL_NAMES_new_null();
|
|
if (!crl->issuers)
|
|
return 0;
|
|
}
|
|
if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
|
|
return 0;
|
|
}
|
|
rev->issuer = gens;
|
|
|
|
reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
|
|
if (!reason && (j != -1)) {
|
|
crl->flags |= EXFLAG_INVALID;
|
|
return 1;
|
|
}
|
|
|
|
if (reason) {
|
|
rev->reason = ASN1_ENUMERATED_get(reason);
|
|
ASN1_ENUMERATED_free(reason);
|
|
} else
|
|
rev->reason = CRL_REASON_NONE;
|
|
|
|
/* Check for critical CRL entry extensions */
|
|
|
|
exts = rev->extensions;
|
|
|
|
for (j = 0; j < sk_X509_EXTENSION_num(exts); j++) {
|
|
ext = sk_X509_EXTENSION_value(exts, j);
|
|
if (ext->critical > 0) {
|
|
if (OBJ_obj2nid(ext->object) == NID_certificate_issuer)
|
|
continue;
|
|
crl->flags |= EXFLAG_CRITICAL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
/*
|
|
* The X509_CRL structure needs a bit of customisation. Cache some extensions
|
|
* and hash of the whole CRL.
|
|
*/
|
|
static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
|
|
void *exarg)
|
|
{
|
|
X509_CRL *crl = (X509_CRL *)*pval;
|
|
STACK_OF(X509_EXTENSION) *exts;
|
|
X509_EXTENSION *ext;
|
|
int idx;
|
|
|
|
switch (operation) {
|
|
case ASN1_OP_NEW_POST:
|
|
crl->idp = NULL;
|
|
crl->akid = NULL;
|
|
crl->flags = 0;
|
|
crl->idp_flags = 0;
|
|
crl->idp_reasons = CRLDP_ALL_REASONS;
|
|
crl->meth = default_crl_method;
|
|
crl->meth_data = NULL;
|
|
crl->issuers = NULL;
|
|
crl->crl_number = NULL;
|
|
crl->base_crl_number = NULL;
|
|
break;
|
|
|
|
case ASN1_OP_D2I_POST:
|
|
#ifndef OPENSSL_NO_SHA
|
|
X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
|
|
#endif
|
|
crl->idp = X509_CRL_get_ext_d2i(crl,
|
|
NID_issuing_distribution_point, NULL,
|
|
NULL);
|
|
if (crl->idp)
|
|
setup_idp(crl, crl->idp);
|
|
|
|
crl->akid = X509_CRL_get_ext_d2i(crl,
|
|
NID_authority_key_identifier, NULL,
|
|
NULL);
|
|
|
|
crl->crl_number = X509_CRL_get_ext_d2i(crl,
|
|
NID_crl_number, NULL, NULL);
|
|
|
|
crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
|
|
NID_delta_crl, NULL,
|
|
NULL);
|
|
/* Delta CRLs must have CRL number */
|
|
if (crl->base_crl_number && !crl->crl_number)
|
|
crl->flags |= EXFLAG_INVALID;
|
|
|
|
/*
|
|
* See if we have any unhandled critical CRL extensions and indicate
|
|
* this in a flag. We only currently handle IDP so anything else
|
|
* critical sets the flag. This code accesses the X509_CRL structure
|
|
* directly: applications shouldn't do this.
|
|
*/
|
|
|
|
exts = crl->crl->extensions;
|
|
|
|
for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
|
|
int nid;
|
|
|
|
ext = sk_X509_EXTENSION_value(exts, idx);
|
|
nid = OBJ_obj2nid(ext->object);
|
|
if (nid == NID_freshest_crl)
|
|
crl->flags |= EXFLAG_FRESHEST;
|
|
if (ext->critical > 0) {
|
|
/* We handle IDP and deltas */
|
|
if ((nid == NID_issuing_distribution_point)
|
|
|| (nid == NID_authority_key_identifier)
|
|
|| (nid == NID_delta_crl))
|
|
continue;
|
|
crl->flags |= EXFLAG_CRITICAL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!crl_set_issuers(crl))
|
|
return 0;
|
|
|
|
if (crl->meth->crl_init) {
|
|
if (crl->meth->crl_init(crl) == 0)
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case ASN1_OP_FREE_POST:
|
|
if (crl->meth->crl_free) {
|
|
if (!crl->meth->crl_free(crl))
|
|
return 0;
|
|
}
|
|
if (crl->akid)
|
|
AUTHORITY_KEYID_free(crl->akid);
|
|
if (crl->idp)
|
|
ISSUING_DIST_POINT_free(crl->idp);
|
|
ASN1_INTEGER_free(crl->crl_number);
|
|
ASN1_INTEGER_free(crl->base_crl_number);
|
|
sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Convert IDP into a more convenient form */
|
|
|
|
static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
|
|
{
|
|
int idp_only = 0;
|
|
/* Set various flags according to IDP */
|
|
crl->idp_flags |= IDP_PRESENT;
|
|
if (idp->onlyuser > 0) {
|
|
idp_only++;
|
|
crl->idp_flags |= IDP_ONLYUSER;
|
|
}
|
|
if (idp->onlyCA > 0) {
|
|
idp_only++;
|
|
crl->idp_flags |= IDP_ONLYCA;
|
|
}
|
|
if (idp->onlyattr > 0) {
|
|
idp_only++;
|
|
crl->idp_flags |= IDP_ONLYATTR;
|
|
}
|
|
|
|
if (idp_only > 1)
|
|
crl->idp_flags |= IDP_INVALID;
|
|
|
|
if (idp->indirectCRL > 0)
|
|
crl->idp_flags |= IDP_INDIRECT;
|
|
|
|
if (idp->onlysomereasons) {
|
|
crl->idp_flags |= IDP_REASONS;
|
|
if (idp->onlysomereasons->length > 0)
|
|
crl->idp_reasons = idp->onlysomereasons->data[0];
|
|
if (idp->onlysomereasons->length > 1)
|
|
crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
|
|
crl->idp_reasons &= CRLDP_ALL_REASONS;
|
|
}
|
|
|
|
DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
|
|
}
|
|
|
|
ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
|
|
ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
|
|
ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
|
|
ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
|
|
} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
|
|
|
|
IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
|
|
|
|
IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
|
|
|
|
static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
|
|
const X509_REVOKED *const *b)
|
|
{
|
|
return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
|
|
(ASN1_STRING *)(*b)->serialNumber));
|
|
}
|
|
|
|
int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
|
|
{
|
|
X509_CRL_INFO *inf;
|
|
inf = crl->crl;
|
|
if (!inf->revoked)
|
|
inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
|
|
if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
|
|
ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
inf->enc.modified = 1;
|
|
return 1;
|
|
}
|
|
|
|
int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
|
|
{
|
|
if (crl->meth->crl_verify)
|
|
return crl->meth->crl_verify(crl, r);
|
|
return 0;
|
|
}
|
|
|
|
int X509_CRL_get0_by_serial(X509_CRL *crl,
|
|
X509_REVOKED **ret, ASN1_INTEGER *serial)
|
|
{
|
|
if (crl->meth->crl_lookup)
|
|
return crl->meth->crl_lookup(crl, ret, serial, NULL);
|
|
return 0;
|
|
}
|
|
|
|
int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
|
|
{
|
|
if (crl->meth->crl_lookup)
|
|
return crl->meth->crl_lookup(crl, ret,
|
|
X509_get_serialNumber(x),
|
|
X509_get_issuer_name(x));
|
|
return 0;
|
|
}
|
|
|
|
static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
|
|
{
|
|
return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
|
|
crl->sig_alg, crl->signature, crl->crl, r));
|
|
}
|
|
|
|
static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
|
|
X509_REVOKED *rev)
|
|
{
|
|
int i;
|
|
|
|
if (!rev->issuer) {
|
|
if (!nm)
|
|
return 1;
|
|
if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
if (!nm)
|
|
nm = X509_CRL_get_issuer(crl);
|
|
|
|
for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
|
|
GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
|
|
if (gen->type != GEN_DIRNAME)
|
|
continue;
|
|
if (!X509_NAME_cmp(nm, gen->d.directoryName))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int def_crl_lookup(X509_CRL *crl,
|
|
X509_REVOKED **ret, ASN1_INTEGER *serial,
|
|
X509_NAME *issuer)
|
|
{
|
|
X509_REVOKED rtmp, *rev;
|
|
int idx;
|
|
rtmp.serialNumber = serial;
|
|
/*
|
|
* Sort revoked into serial number order if not already sorted. Do this
|
|
* under a lock to avoid race condition.
|
|
*/
|
|
if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) {
|
|
CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
|
|
sk_X509_REVOKED_sort(crl->crl->revoked);
|
|
CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
|
|
}
|
|
idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
|
|
if (idx < 0)
|
|
return 0;
|
|
/* Need to look for matching name */
|
|
for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) {
|
|
rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
|
|
if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
|
|
return 0;
|
|
if (crl_revoked_issuer_match(crl, issuer, rev)) {
|
|
if (ret)
|
|
*ret = rev;
|
|
if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
|
|
return 2;
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
|
|
{
|
|
if (meth == NULL)
|
|
default_crl_method = &int_crl_meth;
|
|
else
|
|
default_crl_method = meth;
|
|
}
|
|
|
|
X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
|
|
int (*crl_free) (X509_CRL *crl),
|
|
int (*crl_lookup) (X509_CRL *crl,
|
|
X509_REVOKED **ret,
|
|
ASN1_INTEGER *ser,
|
|
X509_NAME *issuer),
|
|
int (*crl_verify) (X509_CRL *crl,
|
|
EVP_PKEY *pk))
|
|
{
|
|
X509_CRL_METHOD *m;
|
|
m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
|
|
if (!m)
|
|
return NULL;
|
|
m->crl_init = crl_init;
|
|
m->crl_free = crl_free;
|
|
m->crl_lookup = crl_lookup;
|
|
m->crl_verify = crl_verify;
|
|
m->flags = X509_CRL_METHOD_DYNAMIC;
|
|
return m;
|
|
}
|
|
|
|
void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
|
|
{
|
|
if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
|
|
return;
|
|
OPENSSL_free(m);
|
|
}
|
|
|
|
void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
|
|
{
|
|
crl->meth_data = dat;
|
|
}
|
|
|
|
void *X509_CRL_get_meth_data(X509_CRL *crl)
|
|
{
|
|
return crl->meth_data;
|
|
}
|
|
|
|
IMPLEMENT_STACK_OF(X509_REVOKED)
|
|
|
|
IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
|
|
|
|
IMPLEMENT_STACK_OF(X509_CRL)
|
|
|
|
IMPLEMENT_ASN1_SET_OF(X509_CRL)
|