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asio: Use internal ssl context and engine impl

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Implement asio-ssl layer with three classes in asio::ssl::mbedtls:
* context -- replaces SSL_CTX, used mainly as a container to options,
certs, keys
* engine -- replaces SSL, implements the actual mbedtls operations
* bio -- implements openssl BIO specifically tailered to mbedtls and
its asio usage

Further updates:
* asio: Used shared_ptr<> for bio pairs
* asio: Add error checks to mbedtls-bio
* asio: Address potential ssl-context ownership issue
* asio: Address potential bio-engine ownership issue


* Original commit: espressif/esp-idf@d823106aa6
This commit is contained in:
David Cermak
2021-10-14 10:17:24 +02:00
committed by gabsuren
parent abbc8d9c5a
commit f605fdd632
25 changed files with 1014 additions and 321 deletions
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20
components/asio/port/src/asio_ssl_impl.cpp Normal file
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@ -0,0 +1,20 @@
//
// SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
//
// SPDX-License-Identifier: Apache-2.0
//
#include "asio/detail/config.hpp"
#include "asio/ssl/detail/openssl_init.hpp"
namespace asio {
namespace ssl {
namespace detail {
// No OpenSSL in this implementation, instance is nullptr
asio::detail::shared_ptr<openssl_init_base::do_init> openssl_init_base::instance()
{
return nullptr;
}
} } } // namespace asio::ssl::detail

47
components/asio/port/src/esp_asio_openssl_stubs.c
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@ -1,47 +0,0 @@
/*
* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
//
#include "esp_asio_config.h"
#include "internal/ssl_dbg.h"
#include "openssl/esp_asio_openssl_stubs.h"
// Unsupported features as macros to make the assertions more readable
#define ESP_OPENSSL_DH_IS_SUPPORTED 0
#define ESP_OPENSSL_GENERAL_NAMES_IS_SUPPORTED 0
void DH_free (DH *r)
{
SSL_ASSERT3(ESP_OPENSSL_DH_IS_SUPPORTED);
}
DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
{
SSL_ASSERT2(ESP_OPENSSL_DH_IS_SUPPORTED);
return NULL;
}
int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh)
{
SSL_ASSERT1(ESP_OPENSSL_DH_IS_SUPPORTED);
return -1;
}
void GENERAL_NAMES_free(GENERAL_NAMES * gens)
{
SSL_ASSERT3(ESP_OPENSSL_GENERAL_NAMES_IS_SUPPORTED);
}
X509_NAME *X509_get_subject_name(X509 *a)
{
SSL_ASSERT2(ESP_OPENSSL_GENERAL_NAMES_IS_SUPPORTED);
return NULL;
}
int SSL_CTX_clear_chain_certs(SSL_CTX *ctx)
{
return 1;
}