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https://github.com/lwip-tcpip/lwip.git
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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
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/**
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* @file
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* Application layered TCP connection API (to be used from TCPIP thread)\n
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* This interface mimics the tcp callback API to the application while preventing
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* direct linking (much like virtual functions).
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* This way, an application can make use of other application layer protocols
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* on top of TCP without knowing the details (e.g. TLS, proxy connection).
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*
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* This file contains allocation implementation that combine several layers.
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*/
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/*
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* Copyright (c) 2017 Simon Goldschmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Simon Goldschmidt <goldsimon@gmx.de>
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*
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*/
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#include "lwip/opt.h"
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#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
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#include "lwip/altcp.h"
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#include "lwip/altcp_tcp.h"
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#include "lwip/altcp_tls.h"
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#include "lwip/priv/altcp_priv.h"
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#include "lwip/mem.h"
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#include <string.h>
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#if LWIP_ALTCP_TLS
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/** This standard allocator function creates an altcp pcb for
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* TLS over TCP */
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struct altcp_pcb *
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altcp_tls_alloc(void *arg, u8_t ip_type)
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{
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struct altcp_pcb *inner_conn, *ret;
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struct altcp_tls_config *config = (struct altcp_tls_config *)arg;
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LWIP_UNUSED_ARG(ip_type);
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inner_conn = altcp_tcp_new_ip_type(ip_type);
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if (inner_conn == NULL) {
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return NULL;
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}
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ret = altcp_tls_new(config, inner_conn);
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if (ret == NULL) {
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altcp_free(inner_conn);
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}
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return ret;
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}
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#endif /* LWIP_ALTCP_TLS */
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#endif /* LWIP_ALTCP */
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