esp-idf/components/openssl/library/ssl_x509.c

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "ssl_x509.h"
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#include "ssl_methods.h"
#include "ssl_dbg.h"
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#include "ssl_port.h"
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#include "ssl.h"
/**
* @brief show X509 certification information
*/
int __X509_show_info(X509 *x)
{
return X509_METHOD_CALL(show_info, x);
}
/**
* @brief create a X509 certification object according to input X509 certification
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*/
X509* __X509_new(X509 *ix)
{
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int ret;
X509 *x;
x = ssl_mem_zalloc(sizeof(X509));
if (!x) {
SSL_DEBUG(SSL_X509_ERROR_LEVEL, "no enough memory > (x)");
goto no_mem;
}
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x->ref_counter = 1;
if (ix && ix->method)
x->method = ix->method;
else
x->method = X509_method();
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ret = X509_METHOD_CALL(new, x, ix);
if (ret) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "X509_METHOD_CALL(new) return %d", ret);
goto failed;
}
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return x;
failed:
ssl_mem_free(x);
no_mem:
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return NULL;
}
/**
* @brief create a X509 certification object
*/
X509* X509_new(void)
{
return __X509_new(NULL);
}
/**
* @brief free a X509 certification object
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*/
void X509_free(X509 *x)
{
SSL_ASSERT3(x);
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if (--x->ref_counter > 0) {
return;
}
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X509_METHOD_CALL(free, x);
ssl_mem_free(x);
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};
/**
* @brief load a character certification context into system context. If '*cert' is pointed to the
* certification, then load certification into it. Or create a new X509 certification object
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*/
X509* d2i_X509(X509 **cert, const unsigned char *buffer, long len)
{
int m = 0;
int ret;
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X509 *x;
SSL_ASSERT2(buffer);
SSL_ASSERT2(len);
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if (cert && *cert) {
x = *cert;
} else {
x = X509_new();
if (!x) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "X509_new() return NULL");
goto failed1;
}
m = 1;
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}
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ret = X509_METHOD_CALL(load, x, buffer, len);
if (ret) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "X509_METHOD_CALL(load) return %d", ret);
goto failed2;
}
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return x;
failed2:
if (m)
X509_free(x);
failed1:
return NULL;
}
/**
* @brief return SSL X509 verify parameters
*/
X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
{
return &ssl->param;
}
/**
* @brief set X509 host verification flags
*/
int X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
unsigned long flags)
{
/* flags not supported yet */
return 0;
}
/**
* @brief clear X509 host verification flags
*/
int X509_VERIFY_PARAM_clear_hostflags(X509_VERIFY_PARAM *param,
unsigned long flags)
{
/* flags not supported yet */
return 0;
}
/**
* @brief set SSL context client CA certification
*/
int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
{
SSL_ASSERT1(ctx);
SSL_ASSERT1(x);
if (ctx->client_CA == x)
return 1;
X509_free(ctx->client_CA);
ctx->client_CA = x;
return 1;
}
/**
* @brief add CA client certification into the SSL
*/
int SSL_add_client_CA(SSL *ssl, X509 *x)
{
SSL_ASSERT1(ssl);
SSL_ASSERT1(x);
if (ssl->client_CA == x)
return 1;
X509_free(ssl->client_CA);
ssl->client_CA = x;
return 1;
}
/**
* @brief set the SSL context certification
*/
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
{
SSL_ASSERT1(ctx);
SSL_ASSERT1(x);
if (ctx->cert->x509 == x)
return 1;
X509_free(ctx->cert->x509);
ctx->cert->x509 = x;
x->ref_counter++;
return 1;
}
/**
* @brief set the SSL certification
*/
int SSL_use_certificate(SSL *ssl, X509 *x)
{
SSL_ASSERT1(ssl);
SSL_ASSERT1(x);
if (ssl->cert->x509 == x)
return 1;
X509_free(ssl->cert->x509);
ssl->cert->x509 = x;
return 1;
}
long SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x)
{
return SSL_CTX_use_certificate(ctx, x);
}
/**
* @brief get the SSL certification point
*/
X509 *SSL_get_certificate(const SSL *ssl)
{
SSL_ASSERT2(ssl);
return ssl->cert->x509;
}
/**
* @brief load certification into the SSL context
*/
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
const unsigned char *d)
{
int ret;
X509 *x;
x = d2i_X509(NULL, d, len);
if (!x) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "d2i_X509() return NULL");
goto failed1;
}
ret = SSL_CTX_use_certificate(ctx, x); // This uses the "x" so increments ref_count
if (!ret) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "SSL_CTX_use_certificate() return %d", ret);
goto failed2;
}
X509_free(x); // decrements ref_count, so in case of happy flow doesn't free the "x"
return 1;
failed2:
X509_free(x);
failed1:
return 0;
}
/**
* @brief load certification into the SSL
*/
int SSL_use_certificate_ASN1(SSL *ssl, int len,
const unsigned char *d)
{
int ret;
X509 *x;
x = d2i_X509(NULL, d, len);
if (!x) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "d2i_X509() return NULL");
goto failed1;
}
ret = SSL_use_certificate(ssl, x);
if (!ret) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "SSL_use_certificate() return %d", ret);
goto failed2;
}
return 1;
failed2:
X509_free(x);
failed1:
return 0;
}
/**
* @brief load the certification file into SSL context
*/
int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
{
return 0;
}
/**
* @brief load the certification file into SSL
*/
int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
{
return 0;
}
/**
* @brief get peer certification
*/
X509 *SSL_get_peer_certificate(const SSL *ssl)
{
SSL_ASSERT2(ssl);
return ssl->session->peer;
}
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/**
* @brief set SSL context client CA certification
*/
int X509_STORE_add_cert(X509_STORE *store, X509 *x) {
x->ref_counter++;
SSL_CTX *ctx = (SSL_CTX *)store;
SSL_ASSERT1(ctx);
SSL_ASSERT1(x);
if (ctx->client_CA == x) {
return 1;
}
if (ctx->client_CA!=NULL) {
X509_free(ctx->client_CA);
}
ctx->client_CA = x;
return 1;
}
/**
* @brief load a character certification context into system context.
*
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* If '*cert' is pointed to the certification, then load certification
* into it, or create a new X509 certification object.
*/
X509 * PEM_read_bio_X509(BIO *bp, X509 **cert, pem_password_cb cb, void *u) {
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int m = 0;
int ret;
X509 *x;
SSL_ASSERT2(BIO_method_type(bp) & BIO_TYPE_MEM);
if (bp->data == NULL || bp->dlen == 0) {
return NULL;
}
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if (cert && *cert) {
x = *cert;
} else {
x = X509_new();
if (!x) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "X509_new() return NULL");
goto failed;
}
m = 1;
}
ret = X509_METHOD_CALL(load, x, bp->data, bp->dlen);
if (ret) {
SSL_DEBUG(SSL_PKEY_ERROR_LEVEL, "X509_METHOD_CALL(load) return %d", ret);
goto failed;
}
// If buffer successfully created a X509 from the bio, mark the buffer as consumed
bp->data = NULL;
bp->dlen = 0;
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return x;
failed:
if (m) {
X509_free(x);
}
return NULL;
}
X509 *PEM_read_bio_X509_AUX(BIO *bp, X509 **cert, pem_password_cb *cb, void *u)
{
return PEM_read_bio_X509(bp, cert, cb, u);
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}
/**
* @brief get the SSL context object X509 certification storage
*/
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
return (X509_STORE *)ctx;
}