1/** 2 * @file 3 * Application layered TCP connection API (to be used from TCPIP thread)\n 4 * This interface mimics the tcp callback API to the application while preventing 5 * direct linking (much like virtual functions). 6 * This way, an application can make use of other application layer protocols 7 * on top of TCP without knowing the details (e.g. TLS, proxy connection). 8 * 9 * This file contains allocation implementation that combine several layers. 10 */ 11 12/* 13 * Copyright (c) 2017 Simon Goldschmidt 14 * All rights reserved. 15 * 16 * Redistribution and use in source and binary forms, with or without modification, 17 * are permitted provided that the following conditions are met: 18 * 19 * 1. Redistributions of source code must retain the above copyright notice, 20 * this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright notice, 22 * this list of conditions and the following disclaimer in the documentation 23 * and/or other materials provided with the distribution. 24 * 3. The name of the author may not be used to endorse or promote products 25 * derived from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 28 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 30 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 32 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 35 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 36 * OF SUCH DAMAGE. 37 * 38 * This file is part of the lwIP TCP/IP stack. 39 * 40 * Author: Simon Goldschmidt <goldsimon@gmx.de> 41 * 42 */ 43 44#include "lwip/opt.h" 45 46#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ 47 48#include "lwip/altcp.h" 49#include "lwip/altcp_tcp.h" 50#include "lwip/altcp_tls.h" 51#include "lwip/priv/altcp_priv.h" 52#include "lwip/mem.h" 53 54#include <string.h> 55 56#if LWIP_ALTCP_TLS 57 58/** This standard allocator function creates an altcp pcb for 59 * TLS over TCP */ 60struct altcp_pcb * 61altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type) 62{ 63 struct altcp_pcb *inner_conn, *ret; 64 LWIP_UNUSED_ARG(ip_type); 65 66 inner_conn = altcp_tcp_new_ip_type(ip_type); 67 if (inner_conn == NULL) { 68 return NULL; 69 } 70 ret = altcp_tls_wrap(config, inner_conn); 71 if (ret == NULL) { 72 altcp_close(inner_conn); 73 } 74 return ret; 75} 76 77/** This standard allocator function creates an altcp pcb for 78 * TLS over TCP */ 79struct altcp_pcb * 80altcp_tls_alloc(void *arg, u8_t ip_type) 81{ 82 return altcp_tls_new((struct altcp_tls_config *)arg, ip_type); 83} 84 85#endif /* LWIP_ALTCP_TLS */ 86 87#endif /* LWIP_ALTCP */ 88