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 */
60 struct altcp_pcb *
altcp_tls_new(struct altcp_tls_config * config,u8_t ip_type)61 altcp_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 */
79 struct altcp_pcb *
altcp_tls_alloc(void * arg,u8_t ip_type)80 altcp_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