lwip_altcp_alloc.c

00001 /**
00002  * @file
00003  * Application layered TCP connection API (to be used from TCPIP thread)\n
00004  * This interface mimics the tcp callback API to the application while preventing
00005  * direct linking (much like virtual functions).
00006  * This way, an application can make use of other application layer protocols
00007  * on top of TCP without knowing the details (e.g. TLS, proxy connection).
00008  *
00009  * This file contains allocation implementation that combine several layers.
00010  */
00011 
00012 /*
00013  * Copyright (c) 2017 Simon Goldschmidt
00014  * All rights reserved.
00015  *
00016  * Redistribution and use in source and binary forms, with or without modification,
00017  * are permitted provided that the following conditions are met:
00018  *
00019  * 1. Redistributions of source code must retain the above copyright notice,
00020  *    this list of conditions and the following disclaimer.
00021  * 2. Redistributions in binary form must reproduce the above copyright notice,
00022  *    this list of conditions and the following disclaimer in the documentation
00023  *    and/or other materials provided with the distribution.
00024  * 3. The name of the author may not be used to endorse or promote products
00025  *    derived from this software without specific prior written permission.
00026  *
00027  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00028  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00029  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00030  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00031  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00032  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00033  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00034  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00035  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00036  * OF SUCH DAMAGE.
00037  *
00038  * This file is part of the lwIP TCP/IP stack.
00039  *
00040  * Author: Simon Goldschmidt <goldsimon@gmx.de>
00041  *
00042  */
00043 
00044 #include "lwip/opt.h"
00045 
00046 #if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
00047 
00048 #include "lwip/altcp.h"
00049 #include "lwip/altcp_tcp.h"
00050 #include "lwip/altcp_tls.h"
00051 #include "lwip/priv/altcp_priv.h"
00052 #include "lwip/mem.h"
00053 
00054 #include <string.h>
00055 
00056 #if LWIP_ALTCP_TLS
00057 
00058 /** This standard allocator function creates an altcp pcb for
00059  * TLS over TCP */
00060 struct altcp_pcb *
00061 altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type)
00062 {
00063   struct altcp_pcb *inner_conn, *ret;
00064   LWIP_UNUSED_ARG(ip_type);
00065 
00066   inner_conn = altcp_tcp_new_ip_type(ip_type);
00067   if (inner_conn == NULL) {
00068     return NULL;
00069   }
00070   ret = altcp_tls_wrap(config, inner_conn);
00071   if (ret == NULL) {
00072     altcp_close (inner_conn);
00073   }
00074   return ret;
00075 }
00076 
00077 /** This standard allocator function creates an altcp pcb for
00078  * TLS over TCP */
00079 struct altcp_pcb *
00080 altcp_tls_alloc(void *arg, u8_t ip_type)
00081 {
00082   return altcp_tls_new((struct altcp_tls_config *)arg, ip_type);
00083 }
00084 
00085 #endif /* LWIP_ALTCP_TLS */
00086 
00087 #endif /* LWIP_ALTCP */