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openssl/crypto/x509/x509_lu.c
Richard Levitte b646179229 Copyright year updates 
Reviewed-by: Neil Horman <nhorman@openssl.org>
Release: yes
(cherry picked from commit 0ce7d1f355)

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24034)
2024-04-09 13:43:26 +02:00

1053 lines
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/*
* Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include "internal/refcount.h"
#include <openssl/x509.h>
#include "crypto/x509.h"
#include <openssl/x509v3.h>
#include "x509_local.h"
X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
{
X509_LOOKUP *ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL)
return NULL;
ret->method = method;
if (method->new_item != NULL && method->new_item(ret) == 0) {
OPENSSL_free(ret);
return NULL;
}
return ret;
}
void X509_LOOKUP_free(X509_LOOKUP *ctx)
{
if (ctx == NULL)
return;
if ((ctx->method != NULL) && (ctx->method->free != NULL))
(*ctx->method->free) (ctx);
OPENSSL_free(ctx);
}
int X509_STORE_lock(X509_STORE *xs)
{
return CRYPTO_THREAD_write_lock(xs->lock);
}
static int x509_store_read_lock(X509_STORE *xs)
{
return CRYPTO_THREAD_read_lock(xs->lock);
}
int X509_STORE_unlock(X509_STORE *xs)
{
return CRYPTO_THREAD_unlock(xs->lock);
}
int X509_LOOKUP_init(X509_LOOKUP *ctx)
{
if (ctx->method == NULL)
return 0;
if (ctx->method->init != NULL)
return ctx->method->init(ctx);
else
return 1;
}
int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
{
if (ctx->method == NULL)
return 0;
if (ctx->method->shutdown != NULL)
return ctx->method->shutdown(ctx);
else
return 1;
}
int X509_LOOKUP_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
char **ret, OSSL_LIB_CTX *libctx, const char *propq)
{
if (ctx->method == NULL)
return -1;
if (ctx->method->ctrl_ex != NULL)
return ctx->method->ctrl_ex(ctx, cmd, argc, argl, ret, libctx, propq);
if (ctx->method->ctrl != NULL)
return ctx->method->ctrl(ctx, cmd, argc, argl, ret);
return 1;
}
int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
char **ret)
{
return X509_LOOKUP_ctrl_ex(ctx, cmd, argc, argl, ret, NULL, NULL);
}
int X509_LOOKUP_by_subject_ex(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const X509_NAME *name, X509_OBJECT *ret,
OSSL_LIB_CTX *libctx, const char *propq)
{
if (ctx->skip
|| ctx->method == NULL
|| (ctx->method->get_by_subject == NULL
&& ctx->method->get_by_subject_ex == NULL))
return 0;
if (ctx->method->get_by_subject_ex != NULL)
return ctx->method->get_by_subject_ex(ctx, type, name, ret, libctx,
propq);
else
return ctx->method->get_by_subject(ctx, type, name, ret);
}
int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const X509_NAME *name, X509_OBJECT *ret)
{
return X509_LOOKUP_by_subject_ex(ctx, type, name, ret, NULL, NULL);
}
int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const X509_NAME *name,
const ASN1_INTEGER *serial,
X509_OBJECT *ret)
{
if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL))
return 0;
return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret);
}
int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const unsigned char *bytes, int len,
X509_OBJECT *ret)
{
if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
return 0;
return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret);
}
int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const char *str, int len, X509_OBJECT *ret)
{
if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
return 0;
return ctx->method->get_by_alias(ctx, type, str, len, ret);
}
int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data)
{
ctx->method_data = data;
return 1;
}
void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx)
{
return ctx->method_data;
}
X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx)
{
return ctx->store_ctx;
}
static int x509_object_cmp(const X509_OBJECT *const *a,
const X509_OBJECT *const *b)
{
int ret;
ret = ((*a)->type - (*b)->type);
if (ret)
return ret;
switch ((*a)->type) {
case X509_LU_X509:
ret = X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509);
break;
case X509_LU_CRL:
ret = X509_CRL_cmp((*a)->data.crl, (*b)->data.crl);
break;
case X509_LU_NONE:
/* abort(); */
return 0;
}
return ret;
}
X509_STORE *X509_STORE_new(void)
{
X509_STORE *ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL)
return NULL;
if ((ret->objs = sk_X509_OBJECT_new(x509_object_cmp)) == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
goto err;
}
ret->cache = 1;
if ((ret->get_cert_methods = sk_X509_LOOKUP_new_null()) == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
goto err;
}
if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_X509_LIB);
goto err;
}
if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) {
ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
goto err;
}
ret->lock = CRYPTO_THREAD_lock_new();
if (ret->lock == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
goto err;
}
if (!CRYPTO_NEW_REF(&ret->references, 1))
goto err;
return ret;
err:
X509_VERIFY_PARAM_free(ret->param);
sk_X509_OBJECT_free(ret->objs);
sk_X509_LOOKUP_free(ret->get_cert_methods);
CRYPTO_THREAD_lock_free(ret->lock);
OPENSSL_free(ret);
return NULL;
}
void X509_STORE_free(X509_STORE *xs)
{
int i;
STACK_OF(X509_LOOKUP) *sk;
X509_LOOKUP *lu;
if (xs == NULL)
return;
CRYPTO_DOWN_REF(&xs->references, &i);
REF_PRINT_COUNT("X509_STORE", xs);
if (i > 0)
return;
REF_ASSERT_ISNT(i < 0);
sk = xs->get_cert_methods;
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);
sk_X509_OBJECT_pop_free(xs->objs, X509_OBJECT_free);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, xs, &xs->ex_data);
X509_VERIFY_PARAM_free(xs->param);
CRYPTO_THREAD_lock_free(xs->lock);
CRYPTO_FREE_REF(&xs->references);
OPENSSL_free(xs);
}
int X509_STORE_up_ref(X509_STORE *xs)
{
int i;
if (CRYPTO_UP_REF(&xs->references, &i) <= 0)
return 0;
REF_PRINT_COUNT("X509_STORE", xs);
REF_ASSERT_ISNT(i < 2);
return i > 1 ? 1 : 0;
}
X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *xs, X509_LOOKUP_METHOD *m)
{
int i;
STACK_OF(X509_LOOKUP) *sk;
X509_LOOKUP *lu;
sk = xs->get_cert_methods;
for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
lu = sk_X509_LOOKUP_value(sk, i);
if (m == lu->method) {
return lu;
}
}
/* a new one */
lu = X509_LOOKUP_new(m);
if (lu == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_X509_LIB);
return NULL;
}
lu->store_ctx = xs;
if (sk_X509_LOOKUP_push(xs->get_cert_methods, lu))
return lu;
/* sk_X509_LOOKUP_push() failed */
ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
X509_LOOKUP_free(lu);
return NULL;
}
/* Also fill the cache (ctx->store->objs) with all matching certificates. */
X509_OBJECT *X509_STORE_CTX_get_obj_by_subject(X509_STORE_CTX *ctx,
X509_LOOKUP_TYPE type,
const X509_NAME *name)
{
X509_OBJECT *ret = X509_OBJECT_new();
if (ret == NULL)
return NULL;
if (!X509_STORE_CTX_get_by_subject(ctx, type, name, ret)) {
X509_OBJECT_free(ret);
return NULL;
}
return ret;
}
/*
* May be called with |ret| == NULL just for the side effect of
* caching all certs matching the given subject DN in |ctx->store->objs|.
* Returns 1 if successful,
* 0 if not found or X509_LOOKUP_by_subject_ex() returns an error,
* -1 on failure
*/
static int ossl_x509_store_ctx_get_by_subject(const X509_STORE_CTX *ctx,
X509_LOOKUP_TYPE type,
const X509_NAME *name,
X509_OBJECT *ret)
{
X509_STORE *store = ctx->store;
X509_LOOKUP *lu;
X509_OBJECT stmp, *tmp;
int i, j;
if (store == NULL)
return 0;
stmp.type = X509_LU_NONE;
stmp.data.ptr = NULL;
if (!x509_store_read_lock(store))
return 0;
/* Should already be sorted...but just in case */
if (!sk_X509_OBJECT_is_sorted(store->objs)) {
X509_STORE_unlock(store);
/* Take a write lock instead of a read lock */
if (!X509_STORE_lock(store))
return 0;
/*
* Another thread might have sorted it in the meantime. But if so,
* sk_X509_OBJECT_sort() exits early.
*/
sk_X509_OBJECT_sort(store->objs);
}
tmp = X509_OBJECT_retrieve_by_subject(store->objs, type, name);
X509_STORE_unlock(store);
if (tmp == NULL || type == X509_LU_CRL) {
for (i = 0; i < sk_X509_LOOKUP_num(store->get_cert_methods); i++) {
lu = sk_X509_LOOKUP_value(store->get_cert_methods, i);
if (lu->skip)
continue;
if (lu->method == NULL)
return -1;
j = X509_LOOKUP_by_subject_ex(lu, type, name, &stmp,
ctx->libctx, ctx->propq);
if (j != 0) { /* non-zero value is considered success here */
tmp = &stmp;
break;
}
}
if (tmp == NULL)
return 0;
}
if (!X509_OBJECT_up_ref_count(tmp))
return -1;
ret->type = tmp->type;
ret->data.ptr = tmp->data.ptr;
return 1;
}
/* Also fill the cache |ctx->store->objs| with all matching certificates. */
int X509_STORE_CTX_get_by_subject(const X509_STORE_CTX *ctx,
X509_LOOKUP_TYPE type,
const X509_NAME *name, X509_OBJECT *ret)
{
return ossl_x509_store_ctx_get_by_subject(ctx, type, name, ret) > 0;
}
static int x509_store_add(X509_STORE *store, void *x, int crl)
{
X509_OBJECT *obj;
int ret = 0, added = 0;
if (x == NULL)
return 0;
obj = X509_OBJECT_new();
if (obj == NULL)
return 0;
if (crl) {
obj->type = X509_LU_CRL;
obj->data.crl = (X509_CRL *)x;
} else {
obj->type = X509_LU_X509;
obj->data.x509 = (X509 *)x;
}
if (!X509_OBJECT_up_ref_count(obj)) {
obj->type = X509_LU_NONE;
X509_OBJECT_free(obj);
return 0;
}
if (!X509_STORE_lock(store)) {
obj->type = X509_LU_NONE;
X509_OBJECT_free(obj);
return 0;
}
if (X509_OBJECT_retrieve_match(store->objs, obj)) {
ret = 1;
} else {
added = sk_X509_OBJECT_push(store->objs, obj);
ret = added != 0;
}
X509_STORE_unlock(store);
if (added == 0) /* obj not pushed */
X509_OBJECT_free(obj);
return ret;
}
int X509_STORE_add_cert(X509_STORE *xs, X509 *x)
{
if (!x509_store_add(xs, x, 0)) {
ERR_raise(ERR_LIB_X509, ERR_R_X509_LIB);
return 0;
}
return 1;
}
int X509_STORE_add_crl(X509_STORE *xs, X509_CRL *x)
{
if (!x509_store_add(xs, x, 1)) {
ERR_raise(ERR_LIB_X509, ERR_R_X509_LIB);
return 0;
}
return 1;
}
int X509_OBJECT_up_ref_count(X509_OBJECT *a)
{
switch (a->type) {
case X509_LU_NONE:
break;
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;
}
X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a)
{
if (a == NULL || a->type != X509_LU_X509)
return NULL;
return a->data.x509;
}
X509_CRL *X509_OBJECT_get0_X509_CRL(const X509_OBJECT *a)
{
if (a == NULL || a->type != X509_LU_CRL)
return NULL;
return a->data.crl;
}
X509_LOOKUP_TYPE X509_OBJECT_get_type(const X509_OBJECT *a)
{
return a->type;
}
X509_OBJECT *X509_OBJECT_new(void)
{
X509_OBJECT *ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL)
return NULL;
ret->type = X509_LU_NONE;
return ret;
}
static void x509_object_free_internal(X509_OBJECT *a)
{
if (a == NULL)
return;
switch (a->type) {
case X509_LU_NONE:
break;
case X509_LU_X509:
X509_free(a->data.x509);
break;
case X509_LU_CRL:
X509_CRL_free(a->data.crl);
break;
}
}
int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj)
{
if (a == NULL || !X509_up_ref(obj))
return 0;
x509_object_free_internal(a);
a->type = X509_LU_X509;
a->data.x509 = obj;
return 1;
}
int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj)
{
if (a == NULL || !X509_CRL_up_ref(obj))
return 0;
x509_object_free_internal(a);
a->type = X509_LU_CRL;
a->data.crl = obj;
return 1;
}
void X509_OBJECT_free(X509_OBJECT *a)
{
x509_object_free_internal(a);
OPENSSL_free(a);
}
/* Returns -1 if not found, but also on error */
static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
const X509_NAME *name, int *pnmatch)
{
X509_OBJECT stmp;
X509 x509_s;
X509_CRL crl_s;
stmp.type = type;
switch (type) {
case X509_LU_X509:
stmp.data.x509 = &x509_s;
x509_s.cert_info.subject = (X509_NAME *)name; /* won't modify it */
break;
case X509_LU_CRL:
stmp.data.crl = &crl_s;
crl_s.crl.issuer = (X509_NAME *)name; /* won't modify it */
break;
case X509_LU_NONE:
default:
/* abort(); */
return -1;
}
/* Assumes h is locked for read if applicable */
return sk_X509_OBJECT_find_all(h, &stmp, pnmatch);
}
/* Assumes h is locked for read if applicable */
int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
const X509_NAME *name)
{
return x509_object_idx_cnt(h, type, name, NULL);
}
/* Assumes h is locked for read if applicable */
X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,
X509_LOOKUP_TYPE type,
const X509_NAME *name)
{
int idx = X509_OBJECT_idx_by_subject(h, type, name);
if (idx == -1)
return NULL;
return sk_X509_OBJECT_value(h, idx);
}
STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(const X509_STORE *xs)
{
return xs->objs;
}
static X509_OBJECT *x509_object_dup(const X509_OBJECT *obj)
{
X509_OBJECT *ret = X509_OBJECT_new();
if (ret == NULL)
return NULL;
ret->type = obj->type;
ret->data = obj->data;
X509_OBJECT_up_ref_count(ret);
return ret;
}
STACK_OF(X509_OBJECT) *X509_STORE_get1_objects(X509_STORE *store)
{
STACK_OF(X509_OBJECT) *objs;
if (store == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
return NULL;
}
if (!x509_store_read_lock(store))
return NULL;
objs = sk_X509_OBJECT_deep_copy(store->objs, x509_object_dup,
X509_OBJECT_free);
X509_STORE_unlock(store);
return objs;
}
STACK_OF(X509) *X509_STORE_get1_all_certs(X509_STORE *store)
{
STACK_OF(X509) *sk;
STACK_OF(X509_OBJECT) *objs;
int i;
if (store == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
return NULL;
}
if ((sk = sk_X509_new_null()) == NULL)
return NULL;
if (!X509_STORE_lock(store))
goto out_free;
sk_X509_OBJECT_sort(store->objs);
objs = X509_STORE_get0_objects(store);
for (i = 0; i < sk_X509_OBJECT_num(objs); i++) {
X509 *cert = X509_OBJECT_get0_X509(sk_X509_OBJECT_value(objs, i));
if (cert != NULL
&& !X509_add_cert(sk, cert, X509_ADD_FLAG_UP_REF))
goto err;
}
X509_STORE_unlock(store);
return sk;
err:
X509_STORE_unlock(store);
out_free:
OSSL_STACK_OF_X509_free(sk);
return NULL;
}
/* Returns NULL on internal/fatal error, empty stack if not found */
STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx,
const X509_NAME *nm)
{
int i, idx, cnt;
STACK_OF(X509) *sk = NULL;
X509 *x;
X509_OBJECT *obj;
X509_STORE *store = ctx->store;
if (store == NULL)
return sk_X509_new_null();
if (!X509_STORE_lock(store))
return NULL;
sk_X509_OBJECT_sort(store->objs);
idx = x509_object_idx_cnt(store->objs, X509_LU_X509, nm, &cnt);
if (idx < 0) {
/*
* Nothing found in cache: do lookup to possibly add new objects to
* cache
*/
X509_OBJECT *xobj = X509_OBJECT_new();
X509_STORE_unlock(store);
if (xobj == NULL)
return NULL;
i = ossl_x509_store_ctx_get_by_subject(ctx, X509_LU_X509, nm, xobj);
if (i <= 0) {
X509_OBJECT_free(xobj);
return i < 0 ? NULL : sk_X509_new_null();
}
X509_OBJECT_free(xobj);
if (!X509_STORE_lock(store))
return NULL;
sk_X509_OBJECT_sort(store->objs);
idx = x509_object_idx_cnt(store->objs, X509_LU_X509, nm, &cnt);
if (idx < 0) {
sk = sk_X509_new_null();
goto end;
}
}
sk = sk_X509_new_null();
if (sk == NULL)
goto end;
for (i = 0; i < cnt; i++, idx++) {
obj = sk_X509_OBJECT_value(store->objs, idx);
x = obj->data.x509;
if (!X509_add_cert(sk, x, X509_ADD_FLAG_UP_REF)) {
X509_STORE_unlock(store);
OSSL_STACK_OF_X509_free(sk);
return NULL;
}
}
end:
X509_STORE_unlock(store);
return sk;
}
/* Returns NULL on internal/fatal error, empty stack if not found */
STACK_OF(X509_CRL) *X509_STORE_CTX_get1_crls(const X509_STORE_CTX *ctx,
const X509_NAME *nm)
{
int i = 1, idx, cnt;
STACK_OF(X509_CRL) *sk = sk_X509_CRL_new_null();
X509_CRL *x;
X509_OBJECT *obj, *xobj = X509_OBJECT_new();
X509_STORE *store = ctx->store;
/* Always do lookup to possibly add new CRLs to cache */
if (sk == NULL
|| xobj == NULL
|| (i = ossl_x509_store_ctx_get_by_subject(ctx, X509_LU_CRL,
nm, xobj)) < 0) {
X509_OBJECT_free(xobj);
sk_X509_CRL_free(sk);
return NULL;
}
X509_OBJECT_free(xobj);
if (i == 0)
return sk;
if (!X509_STORE_lock(store)) {
sk_X509_CRL_free(sk);
return NULL;
}
sk_X509_OBJECT_sort(store->objs);
idx = x509_object_idx_cnt(store->objs, X509_LU_CRL, nm, &cnt);
if (idx < 0) {
X509_STORE_unlock(store);
return sk;
}
for (i = 0; i < cnt; i++, idx++) {
obj = sk_X509_OBJECT_value(store->objs, idx);
x = obj->data.crl;
if (!X509_CRL_up_ref(x)) {
X509_STORE_unlock(store);
sk_X509_CRL_pop_free(sk, X509_CRL_free);
return NULL;
}
if (!sk_X509_CRL_push(sk, x)) {
X509_STORE_unlock(store);
X509_CRL_free(x);
sk_X509_CRL_pop_free(sk, X509_CRL_free);
return NULL;
}
}
X509_STORE_unlock(store);
return sk;
}
X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
X509_OBJECT *x)
{
int idx, i, num;
X509_OBJECT *obj;
idx = sk_X509_OBJECT_find(h, x);
if (idx < 0)
return NULL;
if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
return sk_X509_OBJECT_value(h, idx);
for (i = idx, num = sk_X509_OBJECT_num(h); i < num; 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) == 0)
return obj;
} else {
return obj;
}
}
return NULL;
}
/*-
* Try to get issuer cert from |ctx->store| matching the subject name of |x|.
* Prefer the first non-expired one, else take the most recently expired one.
*
* Return values are:
* 1 lookup successful.
* 0 certificate not found.
* -1 some other error.
*/
int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
{
const X509_NAME *xn;
X509_OBJECT *obj = X509_OBJECT_new(), *pobj = NULL;
X509_STORE *store = ctx->store;
int i, ok, idx, ret, nmatch = 0;
if (obj == NULL)
return -1;
*issuer = NULL;
xn = X509_get_issuer_name(x);
ok = ossl_x509_store_ctx_get_by_subject(ctx, X509_LU_X509, xn, obj);
if (ok != 1) {
X509_OBJECT_free(obj);
return ok;
}
/* If certificate matches and is currently valid all OK */
if (ctx->check_issued(ctx, x, obj->data.x509)) {
if (ossl_x509_check_cert_time(ctx, obj->data.x509, -1)) {
*issuer = obj->data.x509;
/* |*issuer| has taken over the cert reference from |obj| */
obj->type = X509_LU_NONE;
X509_OBJECT_free(obj);
return 1;
}
}
X509_OBJECT_free(obj);
/*
* Due to limitations of the API this can only retrieve a single cert.
* However it will fill the cache with all matching certificates,
* so we can examine the cache for all matches.
*/
if (store == NULL)
return 0;
/* Find index of first currently valid cert accepted by 'check_issued' */
ret = 0;
if (!X509_STORE_lock(store))
return 0;
sk_X509_OBJECT_sort(store->objs);
idx = x509_object_idx_cnt(store->objs, X509_LU_X509, xn, &nmatch);
if (idx != -1) { /* should be true as we've had at least one match */
/* Look through all matching certs for suitable issuer */
for (i = idx; i < idx + nmatch; i++) {
pobj = sk_X509_OBJECT_value(store->objs, i);
/* See if we've run past the matches */
if (pobj->type != X509_LU_X509)
break;
if (ctx->check_issued(ctx, x, pobj->data.x509)) {
ret = 1;
/* If times check fine, exit with match, else keep looking. */
if (ossl_x509_check_cert_time(ctx, pobj->data.x509, -1)) {
*issuer = pobj->data.x509;
break;
}
/*
* Leave the so far most recently expired match in *issuer
* so we return nearest match if no certificate time is OK.
*/
if (*issuer == NULL
|| ASN1_TIME_compare(X509_get0_notAfter(pobj->data.x509),
X509_get0_notAfter(*issuer)) > 0)
*issuer = pobj->data.x509;
}
}
}
if (*issuer != NULL && !X509_up_ref(*issuer)) {
*issuer = NULL;
ret = -1;
}
X509_STORE_unlock(store);
return ret;
}
int X509_STORE_set_flags(X509_STORE *xs, unsigned long flags)
{
return X509_VERIFY_PARAM_set_flags(xs->param, flags);
}
int X509_STORE_set_depth(X509_STORE *xs, int depth)
{
X509_VERIFY_PARAM_set_depth(xs->param, depth);
return 1;
}
int X509_STORE_set_purpose(X509_STORE *xs, int purpose)
{
return X509_VERIFY_PARAM_set_purpose(xs->param, purpose);
}
int X509_STORE_set_trust(X509_STORE *xs, int trust)
{
return X509_VERIFY_PARAM_set_trust(xs->param, trust);
}
int X509_STORE_set1_param(X509_STORE *xs, const X509_VERIFY_PARAM *param)
{
return X509_VERIFY_PARAM_set1(xs->param, param);
}
X509_VERIFY_PARAM *X509_STORE_get0_param(const X509_STORE *xs)
{
return xs->param;
}
void X509_STORE_set_verify(X509_STORE *xs, X509_STORE_CTX_verify_fn verify)
{
xs->verify = verify;
}
X509_STORE_CTX_verify_fn X509_STORE_get_verify(const X509_STORE *xs)
{
return xs->verify;
}
void X509_STORE_set_verify_cb(X509_STORE *xs,
X509_STORE_CTX_verify_cb verify_cb)
{
xs->verify_cb = verify_cb;
}
X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(const X509_STORE *xs)
{
return xs->verify_cb;
}
void X509_STORE_set_get_issuer(X509_STORE *xs,
X509_STORE_CTX_get_issuer_fn get_issuer)
{
xs->get_issuer = get_issuer;
}
X509_STORE_CTX_get_issuer_fn X509_STORE_get_get_issuer(const X509_STORE *xs)
{
return xs->get_issuer;
}
void X509_STORE_set_check_issued(X509_STORE *xs,
X509_STORE_CTX_check_issued_fn check_issued)
{
xs->check_issued = check_issued;
}
X509_STORE_CTX_check_issued_fn X509_STORE_get_check_issued(const X509_STORE *xs)
{
return xs->check_issued;
}
void X509_STORE_set_check_revocation(X509_STORE *xs,
X509_STORE_CTX_check_revocation_fn cb)
{
xs->check_revocation = cb;
}
X509_STORE_CTX_check_revocation_fn X509_STORE_get_check_revocation(const X509_STORE *xs)
{
return xs->check_revocation;
}
void X509_STORE_set_get_crl(X509_STORE *xs,
X509_STORE_CTX_get_crl_fn get_crl)
{
xs->get_crl = get_crl;
}
X509_STORE_CTX_get_crl_fn X509_STORE_get_get_crl(const X509_STORE *xs)
{
return xs->get_crl;
}
void X509_STORE_set_check_crl(X509_STORE *xs,
X509_STORE_CTX_check_crl_fn check_crl)
{
xs->check_crl = check_crl;
}
X509_STORE_CTX_check_crl_fn X509_STORE_get_check_crl(const X509_STORE *xs)
{
return xs->check_crl;
}
void X509_STORE_set_cert_crl(X509_STORE *xs,
X509_STORE_CTX_cert_crl_fn cert_crl)
{
xs->cert_crl = cert_crl;
}
X509_STORE_CTX_cert_crl_fn X509_STORE_get_cert_crl(const X509_STORE *xs)
{
return xs->cert_crl;
}
void X509_STORE_set_check_policy(X509_STORE *xs,
X509_STORE_CTX_check_policy_fn check_policy)
{
xs->check_policy = check_policy;
}
X509_STORE_CTX_check_policy_fn X509_STORE_get_check_policy(const X509_STORE *xs)
{
return xs->check_policy;
}
void X509_STORE_set_lookup_certs(X509_STORE *xs,
X509_STORE_CTX_lookup_certs_fn lookup_certs)
{
xs->lookup_certs = lookup_certs;
}
X509_STORE_CTX_lookup_certs_fn X509_STORE_get_lookup_certs(const X509_STORE *xs)
{
return xs->lookup_certs;
}
void X509_STORE_set_lookup_crls(X509_STORE *xs,
X509_STORE_CTX_lookup_crls_fn lookup_crls)
{
xs->lookup_crls = lookup_crls;
}
X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(const X509_STORE *xs)
{
return xs->lookup_crls;
}
void X509_STORE_set_cleanup(X509_STORE *xs,
X509_STORE_CTX_cleanup_fn cleanup)
{
xs->cleanup = cleanup;
}
X509_STORE_CTX_cleanup_fn X509_STORE_get_cleanup(const X509_STORE *xs)
{
return xs->cleanup;
}
int X509_STORE_set_ex_data(X509_STORE *xs, int idx, void *data)
{
return CRYPTO_set_ex_data(&xs->ex_data, idx, data);
}
void *X509_STORE_get_ex_data(const X509_STORE *xs, int idx)
{
return CRYPTO_get_ex_data(&xs->ex_data, idx);
}
X509_STORE *X509_STORE_CTX_get0_store(const X509_STORE_CTX *ctx)
{
return ctx->store;
}
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