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/**
 * @file
 * Application layered TCP/TLS connection API (to be used from TCPIP thread)
 *
 * @defgroup altcp_tls TLS layer
 * @ingroup altcp
 * This file contains function prototypes for a TLS layer.
 * A port to ARM mbedtls is provided in the apps/ tree
 * (LWIP_ALTCP_TLS_MBEDTLS option).
 */

/*
 * Copyright (c) 2017 Simon Goldschmidt
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Simon Goldschmidt <goldsimon@gmx.de>
 *
 */
#ifndef LWIP_HDR_ALTCP_TLS_H
#define LWIP_HDR_ALTCP_TLS_H

#include "lwip/opt.h"

#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */

#if LWIP_ALTCP_TLS

#include "lwip/altcp.h"

#ifdef __cplusplus
extern "C" {
#endif

/** @ingroup altcp_tls
 * ALTCP_TLS configuration handle, content depends on port (e.g. mbedtls) 
 */
struct altcp_tls_config;

/** @ingroup altcp_tls
 * Create an ALTCP_TLS server configuration handle
 */
struct altcp_tls_config *altcp_tls_create_config_server_privkey_cert(const u8_t *privkey, size_t privkey_len,
                            const u8_t *privkey_pass, size_t privkey_pass_len,
                            const u8_t *cert, size_t cert_len);

/** @ingroup altcp_tls
 * Create an ALTCP_TLS client configuration handle
 */
struct altcp_tls_config *altcp_tls_create_config_client(const u8_t *cert, size_t cert_len);

/** @ingroup altcp_tls
 * Free an ALTCP_TLS configuration handle
 */
void altcp_tls_free_config(struct altcp_tls_config *conf);

/** @ingroup altcp_tls
 * Create new ALTCP_TLS layer
 */
struct altcp_pcb *altcp_tls_new(struct altcp_tls_config* config, struct altcp_pcb *inner_pcb);

/** @ingroup altcp_tls
 * Return pointer to internal TLS context so application can tweak it.
 * Real type depends on port (e.g. mbedtls)
 */
void *altcp_tls_context (struct altcp_pcb *conn);

#ifdef __cplusplus
}
#endif

#endif /* LWIP_ALTCP_TLS */
#endif /* LWIP_ALTCP */
#endif /* LWIP_HDR_ALTCP_TLS_H */