pineapple/externals/libressl/crypto/x509/x509_lu.c

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/* $OpenBSD: x509_lu.c,v 1.55 2022/01/14 07:53:45 tb Exp $ */
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/* 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>
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#include <string.h>
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#include <openssl/err.h>
#include <openssl/lhash.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include "x509_lcl.h"
X509_LOOKUP *
X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
{
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X509_LOOKUP *lu;
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if ((lu = calloc(1, sizeof(*lu))) == NULL) {
X509error(ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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lu->method = method;
if (method->new_item != NULL && !method->new_item(lu)) {
free(lu);
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return NULL;
}
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return lu;
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}
void
X509_LOOKUP_free(X509_LOOKUP *ctx)
{
if (ctx == NULL)
return;
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if (ctx->method != NULL && ctx->method->free != NULL)
ctx->method->free(ctx);
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free(ctx);
}
int
X509_LOOKUP_init(X509_LOOKUP *ctx)
{
if (ctx->method == NULL)
return 0;
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if (ctx->method->init == NULL)
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return 1;
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return ctx->method->init(ctx);
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}
int
X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
{
if (ctx->method == NULL)
return 0;
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if (ctx->method->shutdown == NULL)
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return 1;
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return ctx->method->shutdown(ctx);
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}
int
X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
char **ret)
{
if (ctx->method == NULL)
return -1;
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if (ctx->method->ctrl == NULL)
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return 1;
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return ctx->method->ctrl(ctx, cmd, argc, argl, ret);
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}
int
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X509_LOOKUP_by_subject(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, X509_NAME *name,
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X509_OBJECT *ret)
{
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if (ctx->method == NULL || ctx->method->get_by_subject == NULL)
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return 0;
return ctx->method->get_by_subject(ctx, type, name, ret);
}
int
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X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
X509_NAME *name, ASN1_INTEGER *serial, X509_OBJECT *ret)
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{
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if (ctx->method == NULL || ctx->method->get_by_issuer_serial == NULL)
return 0;
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return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret);
}
int
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X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
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const unsigned char *bytes, int len, X509_OBJECT *ret)
{
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if (ctx->method == NULL || ctx->method->get_by_fingerprint == NULL)
return 0;
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return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret);
}
int
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X509_LOOKUP_by_alias(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, const char *str,
int len, X509_OBJECT *ret)
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{
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if (ctx->method == NULL || ctx->method->get_by_alias == NULL)
return 0;
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return ctx->method->get_by_alias(ctx, type, str, len, ret);
}
static int
x509_object_cmp(const X509_OBJECT * const *a, const X509_OBJECT * const *b)
{
int ret;
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if ((ret = (*a)->type - (*b)->type) != 0)
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return ret;
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switch ((*a)->type) {
case X509_LU_X509:
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return X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509);
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case X509_LU_CRL:
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return X509_CRL_cmp((*a)->data.crl, (*b)->data.crl);
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}
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return 0;
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}
X509_STORE *
X509_STORE_new(void)
{
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X509_STORE *store;
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if ((store = calloc(1, sizeof(*store))) == NULL)
goto err;
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if ((store->objs = sk_X509_OBJECT_new(x509_object_cmp)) == NULL)
goto err;
if ((store->get_cert_methods = sk_X509_LOOKUP_new_null()) == NULL)
goto err;
if ((store->param = X509_VERIFY_PARAM_new()) == NULL)
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goto err;
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if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, store,
&store->ex_data))
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goto err;
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store->references = 1;
return store;
err:
X509error(ERR_R_MALLOC_FAILURE);
X509_STORE_free(store);
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return NULL;
}
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X509_OBJECT *
X509_OBJECT_new(void)
{
X509_OBJECT *obj;
if ((obj = calloc(1, sizeof(*obj))) == NULL) {
X509error(ERR_R_MALLOC_FAILURE);
return NULL;
}
obj->type = X509_LU_NONE;
return obj;
}
void
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X509_OBJECT_free(X509_OBJECT *a)
{
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if (a == NULL)
return;
switch (a->type) {
case X509_LU_X509:
X509_free(a->data.x509);
break;
case X509_LU_CRL:
X509_CRL_free(a->data.crl);
break;
}
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free(a);
}
void
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X509_STORE_free(X509_STORE *store)
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{
STACK_OF(X509_LOOKUP) *sk;
X509_LOOKUP *lu;
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int i;
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if (store == NULL)
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return;
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if (CRYPTO_add(&store->references, -1, CRYPTO_LOCK_X509_STORE) > 0)
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return;
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sk = store->get_cert_methods;
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for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
lu = sk_X509_LOOKUP_value(sk, i);
X509_LOOKUP_shutdown(lu);
X509_LOOKUP_free(lu);
}
sk_X509_LOOKUP_free(sk);
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sk_X509_OBJECT_pop_free(store->objs, X509_OBJECT_free);
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CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, store, &store->ex_data);
X509_VERIFY_PARAM_free(store->param);
free(store);
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}
int
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X509_STORE_up_ref(X509_STORE *store)
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{
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return CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE) > 1;
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}
X509_LOOKUP *
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X509_STORE_add_lookup(X509_STORE *store, X509_LOOKUP_METHOD *method)
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{
STACK_OF(X509_LOOKUP) *sk;
X509_LOOKUP *lu;
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int i;
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sk = store->get_cert_methods;
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for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
lu = sk_X509_LOOKUP_value(sk, i);
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if (method == lu->method) {
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return lu;
}
}
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if ((lu = X509_LOOKUP_new(method)) == NULL)
return NULL;
lu->store_ctx = store;
if (sk_X509_LOOKUP_push(store->get_cert_methods, lu) <= 0) {
X509error(ERR_R_MALLOC_FAILURE);
X509_LOOKUP_free(lu);
return NULL;
}
return lu;
}
X509_OBJECT *
X509_STORE_CTX_get_obj_by_subject(X509_STORE_CTX *vs, X509_LOOKUP_TYPE type,
X509_NAME *name)
{
X509_OBJECT *obj;
if ((obj = X509_OBJECT_new()) == NULL)
return NULL;
if (!X509_STORE_CTX_get_by_subject(vs, type, name, obj)) {
X509_OBJECT_free(obj);
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return NULL;
}
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return obj;
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}
int
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X509_STORE_CTX_get_by_subject(X509_STORE_CTX *vs, X509_LOOKUP_TYPE type,
X509_NAME *name, X509_OBJECT *ret)
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{
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X509_STORE *ctx = vs->store;
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X509_LOOKUP *lu;
X509_OBJECT stmp, *tmp;
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int i;
if (ctx == NULL)
return 0;
memset(&stmp, 0, sizeof(stmp));
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CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name);
CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
if (tmp == NULL || type == X509_LU_CRL) {
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for (i = 0; i < sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) {
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lu = sk_X509_LOOKUP_value(ctx->get_cert_methods, i);
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if (X509_LOOKUP_by_subject(lu, type, name, &stmp) != 0) {
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tmp = &stmp;
break;
}
}
if (tmp == NULL)
return 0;
}
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if (!X509_OBJECT_up_ref_count(tmp))
return 0;
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*ret = *tmp;
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return 1;
}
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/* Add obj to the store. Takes ownership of obj. */
static int
X509_STORE_add_object(X509_STORE *store, X509_OBJECT *obj)
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{
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int ret = 0;
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CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
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if (X509_OBJECT_retrieve_match(store->objs, obj) != NULL) {
/* Object is already present in the store. That's fine. */
ret = 1;
goto out;
}
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if (sk_X509_OBJECT_push(store->objs, obj) <= 0) {
X509error(ERR_R_MALLOC_FAILURE);
goto out;
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}
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obj = NULL;
ret = 1;
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out:
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CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
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X509_OBJECT_free(obj);
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return ret;
}
int
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X509_STORE_add_cert(X509_STORE *store, X509 *x)
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{
X509_OBJECT *obj;
if (x == NULL)
return 0;
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if ((obj = X509_OBJECT_new()) == NULL)
return 0;
if (!X509_up_ref(x)) {
X509_OBJECT_free(obj);
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return 0;
}
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obj->type = X509_LU_X509;
obj->data.x509 = x;
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return X509_STORE_add_object(store, obj);
}
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int
X509_STORE_add_crl(X509_STORE *store, X509_CRL *x)
{
X509_OBJECT *obj;
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if (x == NULL)
return 0;
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if ((obj = X509_OBJECT_new()) == NULL)
return 0;
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if (!X509_CRL_up_ref(x)) {
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X509_OBJECT_free(obj);
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return 0;
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}
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obj->type = X509_LU_CRL;
obj->data.crl = x;
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return X509_STORE_add_object(store, obj);
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}
int
X509_OBJECT_up_ref_count(X509_OBJECT *a)
{
switch (a->type) {
case X509_LU_X509:
return X509_up_ref(a->data.x509);
case X509_LU_CRL:
return X509_CRL_up_ref(a->data.crl);
}
return 1;
}
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X509_LOOKUP_TYPE
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X509_OBJECT_get_type(const X509_OBJECT *a)
{
return a->type;
}
static int
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x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
X509_NAME *name, int *pnmatch)
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{
X509_OBJECT stmp;
X509 x509_s;
X509_CINF cinf_s;
X509_CRL crl_s;
X509_CRL_INFO crl_info_s;
int idx;
stmp.type = type;
switch (type) {
case X509_LU_X509:
stmp.data.x509 = &x509_s;
x509_s.cert_info = &cinf_s;
cinf_s.subject = name;
break;
case X509_LU_CRL:
stmp.data.crl = &crl_s;
crl_s.crl = &crl_info_s;
crl_info_s.issuer = name;
break;
default:
return -1;
}
idx = sk_X509_OBJECT_find(h, &stmp);
if (idx >= 0 && pnmatch) {
int tidx;
const X509_OBJECT *tobj, *pstmp;
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*pnmatch = 1;
pstmp = &stmp;
for (tidx = idx + 1; tidx < sk_X509_OBJECT_num(h); tidx++) {
tobj = sk_X509_OBJECT_value(h, tidx);
if (x509_object_cmp(&tobj, &pstmp))
break;
(*pnmatch)++;
}
}
return idx;
}
int
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X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
X509_NAME *name)
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{
return x509_object_idx_cnt(h, type, name, NULL);
}
X509_OBJECT *
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X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
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X509_NAME *name)
{
int idx;
idx = X509_OBJECT_idx_by_subject(h, type, name);
if (idx == -1)
return NULL;
return sk_X509_OBJECT_value(h, idx);
}
X509 *
X509_OBJECT_get0_X509(const X509_OBJECT *xo)
{
if (xo != NULL && xo->type == X509_LU_X509)
return xo->data.x509;
return NULL;
}
X509_CRL *
X509_OBJECT_get0_X509_CRL(X509_OBJECT *xo)
{
if (xo != NULL && xo->type == X509_LU_CRL)
return xo->data.crl;
return NULL;
}
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static STACK_OF(X509) *
X509_get1_certs_from_cache(X509_STORE *store, X509_NAME *name)
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{
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STACK_OF(X509) *sk = NULL;
X509 *x = NULL;
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X509_OBJECT *obj;
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int i, idx, cnt;
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CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
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idx = x509_object_idx_cnt(store->objs, X509_LU_X509, name, &cnt);
if (idx < 0)
goto err;
if ((sk = sk_X509_new_null()) == NULL)
goto err;
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for (i = 0; i < cnt; i++, idx++) {
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obj = sk_X509_OBJECT_value(store->objs, idx);
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x = obj->data.x509;
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if (!X509_up_ref(x)) {
x = NULL;
goto err;
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}
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if (!sk_X509_push(sk, x))
goto err;
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}
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CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
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return sk;
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err:
CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
sk_X509_pop_free(sk, X509_free);
X509_free(x);
return NULL;
}
STACK_OF(X509) *
X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *name)
{
X509_STORE *store = ctx->store;
STACK_OF(X509) *sk;
X509_OBJECT *obj;
if (store == NULL)
return NULL;
if ((sk = X509_get1_certs_from_cache(store, name)) != NULL)
return sk;
/* Nothing found: do lookup to possibly add new objects to cache. */
obj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509, name);
if (obj == NULL)
return NULL;
X509_OBJECT_free(obj);
return X509_get1_certs_from_cache(store, name);
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}
STACK_OF(X509_CRL) *
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X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *name)
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{
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X509_STORE *store = ctx->store;
STACK_OF(X509_CRL) *sk = NULL;
X509_CRL *x = NULL;
X509_OBJECT *obj = NULL;
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int i, idx, cnt;
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if (store == NULL)
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return NULL;
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/* Always do lookup to possibly add new CRLs to cache */
obj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_CRL, name);
if (obj == NULL)
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return NULL;
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X509_OBJECT_free(obj);
obj = NULL;
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CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
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idx = x509_object_idx_cnt(store->objs, X509_LU_CRL, name, &cnt);
if (idx < 0)
goto err;
if ((sk = sk_X509_CRL_new_null()) == NULL)
goto err;
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for (i = 0; i < cnt; i++, idx++) {
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obj = sk_X509_OBJECT_value(store->objs, idx);
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x = obj->data.crl;
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if (!X509_CRL_up_ref(x)) {
x = NULL;
goto err;
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}
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if (!sk_X509_CRL_push(sk, x))
goto err;
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}
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CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
return sk;
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err:
CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
X509_CRL_free(x);
sk_X509_CRL_pop_free(sk, X509_CRL_free);
return NULL;
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}
X509_OBJECT *
X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x)
{
int idx, i;
X509_OBJECT *obj;
idx = sk_X509_OBJECT_find(h, x);
if (idx == -1)
return NULL;
if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
return sk_X509_OBJECT_value(h, idx);
for (i = idx; i < sk_X509_OBJECT_num(h); i++) {
obj = sk_X509_OBJECT_value(h, i);
if (x509_object_cmp((const X509_OBJECT **)&obj,
(const X509_OBJECT **)&x))
return NULL;
if (x->type == X509_LU_X509) {
if (!X509_cmp(obj->data.x509, x->data.x509))
return obj;
} else if (x->type == X509_LU_CRL) {
if (!X509_CRL_match(obj->data.crl, x->data.crl))
return obj;
} else
return obj;
}
return NULL;
}
/* Try to get issuer certificate from store. Due to limitations
* of the API this can only retrieve a single certificate matching
* a given subject name. However it will fill the cache with all
* matching certificates, so we can examine the cache for all
* matches.
*
* Return values are:
* 1 lookup successful.
* 0 certificate not found.
* -1 some other error.
*/
int
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X509_STORE_CTX_get1_issuer(X509 **out_issuer, X509_STORE_CTX *ctx, X509 *x)
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{
X509_NAME *xn;
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X509_OBJECT *obj, *pobj;
X509 *issuer = NULL;
int i, idx, ret;
*out_issuer = NULL;
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xn = X509_get_issuer_name(x);
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obj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509, xn);
if (obj == NULL)
return 0;
if ((issuer = X509_OBJECT_get0_X509(obj)) == NULL) {
X509_OBJECT_free(obj);
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return 0;
}
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if (!X509_up_ref(issuer)) {
X509_OBJECT_free(obj);
return -1;
}
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/* If certificate matches all OK */
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if (ctx->check_issued(ctx, x, issuer)) {
if (x509_check_cert_time(ctx, issuer, -1)) {
*out_issuer = issuer;
X509_OBJECT_free(obj);
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return 1;
}
}
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X509_free(issuer);
issuer = NULL;
X509_OBJECT_free(obj);
obj = NULL;
if (ctx->store == NULL)
return 0;
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/* Else find index of first cert accepted by 'check_issued' */
CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
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idx = X509_OBJECT_idx_by_subject(ctx->store->objs, X509_LU_X509, xn);
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if (idx != -1) /* should be true as we've had at least one match */ {
/* Look through all matching certs for suitable issuer */
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for (i = idx; i < sk_X509_OBJECT_num(ctx->store->objs); i++) {
pobj = sk_X509_OBJECT_value(ctx->store->objs, i);
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/* See if we've run past the matches */
if (pobj->type != X509_LU_X509)
break;
if (X509_NAME_cmp(xn,
X509_get_subject_name(pobj->data.x509)))
break;
if (ctx->check_issued(ctx, x, pobj->data.x509)) {
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issuer = pobj->data.x509;
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/*
* If times check, exit with match,
* otherwise keep looking. Leave last
* match in issuer so we return nearest
* match if no certificate time is OK.
*/
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if (x509_check_cert_time(ctx, issuer, -1))
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break;
}
}
}
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ret = 0;
if (issuer != NULL) {
if (!X509_up_ref(issuer)) {
ret = -1;
} else {
*out_issuer = issuer;
ret = 1;
}
}
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CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
return ret;
}
STACK_OF(X509_OBJECT) *
X509_STORE_get0_objects(X509_STORE *xs)
{
return xs->objs;
}
void *
X509_STORE_get_ex_data(X509_STORE *xs, int idx)
{
return CRYPTO_get_ex_data(&xs->ex_data, idx);
}
int
X509_STORE_set_ex_data(X509_STORE *xs, int idx, void *data)
{
return CRYPTO_set_ex_data(&xs->ex_data, idx, data);
}
int
X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
{
return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
}
int
X509_STORE_set_depth(X509_STORE *ctx, int depth)
{
X509_VERIFY_PARAM_set_depth(ctx->param, depth);
return 1;
}
int
X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
{
return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
}
int
X509_STORE_set_trust(X509_STORE *ctx, int trust)
{
return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
}
int
X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
{
return X509_VERIFY_PARAM_set1(ctx->param, param);
}
X509_VERIFY_PARAM *
X509_STORE_get0_param(X509_STORE *ctx)
{
return ctx->param;
}
void
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X509_STORE_set_verify(X509_STORE *store, X509_STORE_CTX_verify_fn verify)
{
store->verify = verify;
}
X509_STORE_CTX_verify_fn
X509_STORE_get_verify(X509_STORE *store)
{
return store->verify;
}
void
X509_STORE_set_verify_cb(X509_STORE *store, X509_STORE_CTX_verify_cb verify_cb)
{
store->verify_cb = verify_cb;
}
X509_STORE_CTX_verify_cb
X509_STORE_get_verify_cb(X509_STORE *store)
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{
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return store->verify_cb;
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}