// Copyright 2015-2018 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.

#ifndef _ESP_TRANSPORT_SSL_H_
#define _ESP_TRANSPORT_SSL_H_

#include "esp_transport.h"
#include "esp_tls.h"

#ifdef __cplusplus
extern "C" {
#endif


/**
 * @brief       Create new SSL transport, the transport handle must be release esp_transport_destroy callback
 *
 * @return      the allocated esp_transport_handle_t, or NULL if the handle can not be allocated
 */
esp_transport_handle_t esp_transport_ssl_init();

/**
 * @brief      Set SSL certificate data (as PEM format).
 *             Note that, this function stores the pointer to data, rather than making a copy.
 *             So this data must remain valid until after the connection is cleaned up
 *
 * @param      t     ssl transport
 * @param[in]  data  The pem data
 * @param[in]  len   The length
 */
void esp_transport_ssl_set_cert_data(esp_transport_handle_t t, const char *data, int len);

/**
 * @brief      Enable global CA store for SSL connection
 *
 * @param      t    ssl transport
 */
void esp_transport_ssl_enable_global_ca_store(esp_transport_handle_t t);

/**
 * @brief      Set SSL client certificate data for mutual authentication (as PEM format).
 *             Note that, this function stores the pointer to data, rather than making a copy.
 *             So this data must remain valid until after the connection is cleaned up
 *
 * @param      t     ssl transport
 * @param[in]  data  The pem data
 * @param[in]  len   The length
 */
void esp_transport_ssl_set_client_cert_data(esp_transport_handle_t t, const char *data, int len);

/**
 * @brief      Set SSL client key data for mutual authentication (as PEM format).
 *             Note that, this function stores the pointer to data, rather than making a copy.
 *             So this data must remain valid until after the connection is cleaned up
 *
 * @param      t     ssl transport
 * @param[in]  data  The pem data
 * @param[in]  len   The length
 */
void esp_transport_ssl_set_client_key_data(esp_transport_handle_t t, const char *data, int len);

/**
 * @brief      Skip validation of certificate's common name field
 *
 * @note       Skipping CN validation is not recommended
 *
 * @param      t     ssl transport
 */
void esp_transport_ssl_skip_common_name_check(esp_transport_handle_t t);

/**
 * @brief      Set keep-alive status in current ssl context
 *
 * @param[in]  t               ssl transport
 * @param[in]  keep_alive_cfg  The handle for keep-alive configuration
 */
void esp_transport_ssl_set_keep_alive(esp_transport_handle_t t, esp_transport_keep_alive_t *keep_alive_cfg);

#ifdef __cplusplus
}
#endif
#endif /* _ESP_TRANSPORT_SSL_H_ */