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/**
* @file
* Application layered TCP connection API (to be used from TCPIP thread)\n
* This interface mimics the tcp callback API to the application while preventing
* direct linking (much like virtual functions).
* This way, an application can make use of other application layer protocols
* on top of TCP without knowing the details (e.g. TLS, proxy connection).
*
* This file contains allocation implementation that combine several layers.
*/
/*
* 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>
*
*/
#include "lwip/opt.h"
#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
#include "lwip/altcp.h"
#include "lwip/altcp_tcp.h"
#include "lwip/altcp_tls.h"
#include "lwip/priv/altcp_priv.h"
#include "lwip/mem.h"
#include <string.h>
#if LWIP_ALTCP_TLS
/** This standard allocator function creates an altcp pcb for
* TLS over TCP */
struct altcp_pcb *
altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type)
{
struct altcp_pcb *inner_conn, *ret;
LWIP_UNUSED_ARG(ip_type);
inner_conn = altcp_tcp_new_ip_type(ip_type);
if (inner_conn == NULL) {
return NULL;
}
ret = altcp_tls_wrap(config, inner_conn);
if (ret == NULL) {
altcp_close(inner_conn);
}
return ret;
}
/** This standard allocator function creates an altcp pcb for
* TLS over TCP */
struct altcp_pcb *
altcp_tls_alloc(void *arg, u8_t ip_type)
{
return altcp_tls_new((struct altcp_tls_config *)arg, ip_type);
}
#endif /* LWIP_ALTCP_TLS */
#endif /* LWIP_ALTCP */
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