635 lines
17 KiB
C
635 lines
17 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <string.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/thread.h>
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#include <openssl/x509.h>
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#include "../internal.h"
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#include "internal.h"
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static int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
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X509_NAME *name);
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static X509_OBJECT *X509_OBJECT_retrieve_by_subject(
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STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name);
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static X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
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X509_OBJECT *x);
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static int X509_OBJECT_up_ref_count(X509_OBJECT *a);
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static X509_LOOKUP *X509_LOOKUP_new(const X509_LOOKUP_METHOD *method,
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X509_STORE *store);
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static int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
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X509_OBJECT *ret);
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static X509_LOOKUP *X509_LOOKUP_new(const X509_LOOKUP_METHOD *method,
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X509_STORE *store) {
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X509_LOOKUP *ret = OPENSSL_zalloc(sizeof(X509_LOOKUP));
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if (ret == NULL) {
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return NULL;
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}
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ret->method = method;
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ret->store_ctx = store;
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if ((method->new_item != NULL) && !method->new_item(ret)) {
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OPENSSL_free(ret);
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return NULL;
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}
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return ret;
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}
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void X509_LOOKUP_free(X509_LOOKUP *ctx) {
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if (ctx == NULL) {
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return;
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}
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if (ctx->method != NULL && ctx->method->free != NULL) {
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(*ctx->method->free)(ctx);
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}
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OPENSSL_free(ctx);
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}
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int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
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char **ret) {
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if (ctx->method == NULL) {
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return -1;
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}
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if (ctx->method->ctrl != NULL) {
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return ctx->method->ctrl(ctx, cmd, argc, argl, ret);
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} else {
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return 1;
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}
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}
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static int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int 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;
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}
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// Note |get_by_subject| leaves |ret| in an inconsistent state. It has
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// pointers to an |X509| or |X509_CRL|, but has not bumped the refcount yet.
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// For now, the caller is expected to fix this, but ideally we'd fix the
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// |X509_LOOKUP| convention itself.
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return ctx->method->get_by_subject(ctx, type, name, ret) > 0;
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}
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static int x509_object_cmp(const X509_OBJECT *a, const X509_OBJECT *b) {
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int ret = a->type - b->type;
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if (ret) {
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return ret;
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}
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switch (a->type) {
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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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default:
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// abort();
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return 0;
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}
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}
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static int x509_object_cmp_sk(const X509_OBJECT *const *a,
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const X509_OBJECT *const *b) {
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return x509_object_cmp(*a, *b);
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}
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static CRYPTO_EX_DATA_CLASS g_ex_data_class =
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CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
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X509_STORE *X509_STORE_new(void) {
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X509_STORE *ret = OPENSSL_zalloc(sizeof(X509_STORE));
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if (ret == NULL) {
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return NULL;
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}
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ret->references = 1;
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CRYPTO_MUTEX_init(&ret->objs_lock);
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CRYPTO_new_ex_data(&ret->ex_data);
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ret->objs = sk_X509_OBJECT_new(x509_object_cmp_sk);
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ret->get_cert_methods = sk_X509_LOOKUP_new_null();
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ret->param = X509_VERIFY_PARAM_new();
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if (ret->objs == NULL ||
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ret->get_cert_methods == NULL ||
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ret->param == NULL) {
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X509_STORE_free(ret);
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return NULL;
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}
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return ret;
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}
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int X509_STORE_lock(X509_STORE *v) {
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if (v == NULL) {
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return 0;
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}
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CRYPTO_MUTEX_lock_write(&v->objs_lock);
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return 1;
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}
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int X509_STORE_unlock(X509_STORE *v) {
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if (v == NULL) {
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return 0;
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}
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CRYPTO_MUTEX_unlock_write(&v->objs_lock);
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return 1;
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}
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int X509_STORE_up_ref(X509_STORE *store) {
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CRYPTO_refcount_inc(&store->references);
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return 1;
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}
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void X509_STORE_free(X509_STORE *vfy) {
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if (vfy == NULL) {
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return;
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}
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if (!CRYPTO_refcount_dec_and_test_zero(&vfy->references)) {
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return;
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}
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CRYPTO_MUTEX_cleanup(&vfy->objs_lock);
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CRYPTO_free_ex_data(&g_ex_data_class, vfy, &vfy->ex_data);
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sk_X509_LOOKUP_pop_free(vfy->get_cert_methods, X509_LOOKUP_free);
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sk_X509_OBJECT_pop_free(vfy->objs, X509_OBJECT_free);
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X509_VERIFY_PARAM_free(vfy->param);
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OPENSSL_free(vfy);
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}
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X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, const X509_LOOKUP_METHOD *m) {
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STACK_OF(X509_LOOKUP) *sk = v->get_cert_methods;
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for (size_t i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
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X509_LOOKUP *lu = sk_X509_LOOKUP_value(sk, i);
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if (m == lu->method) {
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return lu;
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}
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}
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X509_LOOKUP *lu = X509_LOOKUP_new(m, v);
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if (lu == NULL || !sk_X509_LOOKUP_push(v->get_cert_methods, lu)) {
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X509_LOOKUP_free(lu);
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return NULL;
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}
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return lu;
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}
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int X509_STORE_CTX_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
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X509_OBJECT *ret) {
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X509_STORE *ctx = vs->ctx;
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X509_OBJECT stmp;
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CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
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X509_OBJECT *tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name);
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CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
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if (tmp == NULL || type == X509_LU_CRL) {
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for (size_t i = 0; i < sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) {
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X509_LOOKUP *lu = sk_X509_LOOKUP_value(ctx->get_cert_methods, i);
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if (X509_LOOKUP_by_subject(lu, type, name, &stmp)) {
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tmp = &stmp;
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break;
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}
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}
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if (tmp == NULL) {
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return 0;
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}
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}
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// if (ret->data.ptr != NULL) X509_OBJECT_free_contents(ret);
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ret->type = tmp->type;
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ret->data.ptr = tmp->data.ptr;
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X509_OBJECT_up_ref_count(ret);
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return 1;
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}
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static int x509_store_add(X509_STORE *ctx, void *x, int is_crl) {
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if (x == NULL) {
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return 0;
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}
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X509_OBJECT *const obj = X509_OBJECT_new();
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if (obj == NULL) {
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return 0;
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}
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if (is_crl) {
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obj->type = X509_LU_CRL;
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obj->data.crl = (X509_CRL *)x;
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} else {
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obj->type = X509_LU_X509;
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obj->data.x509 = (X509 *)x;
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}
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X509_OBJECT_up_ref_count(obj);
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CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
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int ret = 1;
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int added = 0;
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// Duplicates are silently ignored
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if (!X509_OBJECT_retrieve_match(ctx->objs, obj)) {
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ret = added = (sk_X509_OBJECT_push(ctx->objs, obj) != 0);
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}
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CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
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if (!added) {
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X509_OBJECT_free(obj);
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}
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return ret;
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}
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int X509_STORE_add_cert(X509_STORE *ctx, X509 *x) {
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return x509_store_add(ctx, x, /*is_crl=*/0);
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}
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int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x) {
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return x509_store_add(ctx, x, /*is_crl=*/1);
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}
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X509_OBJECT *X509_OBJECT_new(void) {
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return OPENSSL_zalloc(sizeof(X509_OBJECT));
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}
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void X509_OBJECT_free(X509_OBJECT *obj) {
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if (obj == NULL) {
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return;
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}
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X509_OBJECT_free_contents(obj);
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OPENSSL_free(obj);
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}
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static int X509_OBJECT_up_ref_count(X509_OBJECT *a) {
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switch (a->type) {
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case X509_LU_X509:
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X509_up_ref(a->data.x509);
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break;
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case X509_LU_CRL:
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X509_CRL_up_ref(a->data.crl);
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break;
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}
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return 1;
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}
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void X509_OBJECT_free_contents(X509_OBJECT *a) {
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switch (a->type) {
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case X509_LU_X509:
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X509_free(a->data.x509);
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break;
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case X509_LU_CRL:
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X509_CRL_free(a->data.crl);
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break;
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}
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OPENSSL_memset(a, 0, sizeof(X509_OBJECT));
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}
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int X509_OBJECT_get_type(const X509_OBJECT *a) { return a->type; }
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X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a) {
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if (a == NULL || a->type != X509_LU_X509) {
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return NULL;
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}
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return a->data.x509;
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}
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X509_CRL *X509_OBJECT_get0_X509_CRL(const X509_OBJECT *a) {
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if (a == NULL || a->type != X509_LU_CRL) {
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return NULL;
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}
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return a->data.crl;
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}
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int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj) {
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if (a == NULL || !X509_up_ref(obj)) {
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return 0;
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}
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X509_OBJECT_free_contents(a);
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a->type = X509_LU_X509;
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a->data.x509 = obj;
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return 1;
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}
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int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj) {
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if (a == NULL || !X509_CRL_up_ref(obj)) {
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return 0;
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}
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X509_OBJECT_free_contents(a);
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a->type = X509_LU_CRL;
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a->data.crl = obj;
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return 1;
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}
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static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
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X509_NAME *name, int *pnmatch) {
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X509_OBJECT stmp;
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X509 x509_s;
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X509_CINF cinf_s;
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X509_CRL crl_s;
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X509_CRL_INFO crl_info_s;
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stmp.type = type;
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switch (type) {
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case X509_LU_X509:
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stmp.data.x509 = &x509_s;
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x509_s.cert_info = &cinf_s;
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cinf_s.subject = name;
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break;
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case X509_LU_CRL:
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stmp.data.crl = &crl_s;
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crl_s.crl = &crl_info_s;
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crl_info_s.issuer = name;
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break;
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default:
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// abort();
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return -1;
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}
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size_t idx;
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sk_X509_OBJECT_sort(h);
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if (!sk_X509_OBJECT_find_awslc(h, &idx, &stmp)) {
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return -1;
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}
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if (pnmatch != NULL) {
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*pnmatch = 1;
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for (size_t tidx = idx + 1; tidx < sk_X509_OBJECT_num(h); tidx++) {
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const X509_OBJECT *tobj = sk_X509_OBJECT_value(h, tidx);
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if (x509_object_cmp(tobj, &stmp)) {
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break;
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}
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(*pnmatch)++;
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}
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}
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return (int)idx;
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}
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static int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
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X509_NAME *name) {
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return x509_object_idx_cnt(h, type, name, NULL);
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}
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X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,
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int type, X509_NAME *name) {
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int idx;
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idx = X509_OBJECT_idx_by_subject(h, type, name);
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if (idx == -1) {
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return NULL;
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}
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return sk_X509_OBJECT_value(h, idx);
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}
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STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st) {
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return st->objs;
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}
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STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm) {
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int cnt;
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STACK_OF(X509) *sk = sk_X509_new_null();
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if (sk == NULL) {
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return NULL;
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}
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CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
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int idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
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if (idx < 0) {
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// Nothing found in cache: do lookup to possibly add new objects to
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// cache
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X509_OBJECT xobj;
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, nm, &xobj)) {
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sk_X509_free(sk);
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return NULL;
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}
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X509_OBJECT_free_contents(&xobj);
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CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
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idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
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if (idx < 0) {
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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sk_X509_free(sk);
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return NULL;
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}
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}
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for (int i = 0; i < cnt; i++, idx++) {
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X509_OBJECT *obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
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X509 *x = obj->data.x509;
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if (!sk_X509_push(sk, x)) {
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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sk_X509_pop_free(sk, X509_free);
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return NULL;
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}
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X509_up_ref(x);
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}
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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return sk;
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}
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STACK_OF(X509_CRL) *X509_STORE_CTX_get1_crls(X509_STORE_CTX *ctx,
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X509_NAME *nm) {
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int cnt;
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X509_OBJECT xobj;
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STACK_OF(X509_CRL) *sk = sk_X509_CRL_new_null();
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if (sk == NULL) {
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return NULL;
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}
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// Always do lookup to possibly add new CRLs to cache.
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if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_CRL, nm, &xobj)) {
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sk_X509_CRL_free(sk);
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return NULL;
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}
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X509_OBJECT_free_contents(&xobj);
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CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
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int idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
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if (idx < 0) {
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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sk_X509_CRL_free(sk);
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return NULL;
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}
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for (int i = 0; i < cnt; i++, idx++) {
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X509_OBJECT *obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
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X509_CRL *x = obj->data.crl;
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X509_CRL_up_ref(x);
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if (!sk_X509_CRL_push(sk, x)) {
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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X509_CRL_free(x);
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sk_X509_CRL_pop_free(sk, X509_CRL_free);
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return NULL;
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}
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}
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CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
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return sk;
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}
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static X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
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X509_OBJECT *x) {
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sk_X509_OBJECT_sort(h);
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size_t idx;
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if (!sk_X509_OBJECT_find_awslc(h, &idx, x)) {
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return NULL;
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}
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if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL)) {
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return sk_X509_OBJECT_value(h, idx);
|
|
}
|
|
for (size_t i = idx; i < sk_X509_OBJECT_num(h); i++) {
|
|
X509_OBJECT *obj = sk_X509_OBJECT_value(h, i);
|
|
if (x509_object_cmp(obj, 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 X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x) {
|
|
X509_NAME *xn;
|
|
X509_OBJECT obj, *pobj;
|
|
int idx, ret;
|
|
size_t i;
|
|
*issuer = NULL;
|
|
xn = X509_get_issuer_name(x);
|
|
if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, xn, &obj)) {
|
|
return 0;
|
|
}
|
|
// If certificate matches all OK
|
|
if (x509_check_issued_with_callback(ctx, x, obj.data.x509)) {
|
|
if (x509_check_cert_time(ctx, obj.data.x509, /*suppress_error*/1)) {
|
|
*issuer = obj.data.x509;
|
|
return 1;
|
|
}
|
|
}
|
|
X509_OBJECT_free_contents(&obj);
|
|
|
|
// Else find index of first cert accepted by
|
|
// |x509_check_issued_with_callback|.
|
|
ret = 0;
|
|
CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
|
|
idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
|
|
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 < sk_X509_OBJECT_num(ctx->ctx->objs); i++) {
|
|
pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
|
|
// 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 (x509_check_issued_with_callback(ctx, x, pobj->data.x509)) {
|
|
*issuer = pobj->data.x509;
|
|
ret = 1;
|
|
// Break the loop with a match if the time check is valid, otherwise
|
|
// we continue searching. We leave the last tested issuer certificate in
|
|
// |issuer| on purpose. This returns the closest match if none of the
|
|
// candidate issuer certificates' timestamps were valid.
|
|
if (x509_check_cert_time(ctx, *issuer, /*suppress_error*/1)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
|
|
if(*issuer) {
|
|
X509_up_ref(*issuer);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
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, const 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 X509_STORE_set_verify_cb(X509_STORE *ctx,
|
|
X509_STORE_CTX_verify_cb verify_cb) {
|
|
ctx->verify_cb = verify_cb;
|
|
}
|
|
|
|
X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(X509_STORE *ctx) {
|
|
return ctx->verify_cb;
|
|
}
|
|
|
|
X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(X509_STORE *ctx) {
|
|
return ctx->lookup_crls;
|
|
}
|
|
|
|
void X509_STORE_set_lookup_crls(X509_STORE *ctx,
|
|
X509_STORE_CTX_lookup_crls_fn lookup_crls) {
|
|
ctx->lookup_crls = lookup_crls;
|
|
}
|
|
|
|
void X509_STORE_set_get_crl(X509_STORE *ctx,
|
|
X509_STORE_CTX_get_crl_fn get_crl) {
|
|
ctx->get_crl = get_crl;
|
|
}
|
|
|
|
void X509_STORE_set_check_crl(X509_STORE *ctx,
|
|
X509_STORE_CTX_check_crl_fn check_crl) {
|
|
ctx->check_crl = check_crl;
|
|
}
|
|
|
|
X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx) { return ctx->ctx; }
|
|
|
|
int X509_STORE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
|
|
CRYPTO_EX_dup *dup_unused,
|
|
CRYPTO_EX_free *free_func) {
|
|
int index;
|
|
if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
|
|
free_func)) {
|
|
return -1;
|
|
}
|
|
return index;
|
|
}
|
|
|
|
int X509_STORE_set_ex_data(X509_STORE *ctx, int idx, void *data) {
|
|
return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
|
|
}
|
|
|
|
void *X509_STORE_get_ex_data(X509_STORE *ctx, int idx) {
|
|
return CRYPTO_get_ex_data(&ctx->ex_data, idx);
|
|
}
|