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1 office 1 /**
2 * @file
3 * Application layered TCP/TLS connection API (to be used from TCPIP thread)
4 *
5 * This file contains structure definitions for a TLS layer using mbedTLS.
6 */
7  
8 /*
9 * Copyright (c) 2017 Simon Goldschmidt
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without modification,
13 * are permitted provided that the following conditions are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright notice,
16 * this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
20 * 3. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
26 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
28 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
32 * OF SUCH DAMAGE.
33 *
34 * This file is part of the lwIP TCP/IP stack.
35 *
36 * Author: Simon Goldschmidt <goldsimon@gmx.de>
37 *
38 */
39 #ifndef LWIP_HDR_ALTCP_MBEDTLS_STRUCTS_H
40 #define LWIP_HDR_ALTCP_MBEDTLS_STRUCTS_H
41  
42 #include "lwip/opt.h"
43  
44 #if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
45  
46 #include "lwip/apps/altcp_tls_mbedtls_opts.h"
47  
48 #if LWIP_ALTCP_TLS && LWIP_ALTCP_TLS_MBEDTLS
49  
50 #include "lwip/altcp.h"
51 #include "lwip/pbuf.h"
52  
53 #include "mbedtls/ssl.h"
54  
55 #ifdef __cplusplus
56 extern "C" {
57 #endif
58  
59 #define ALTCP_MBEDTLS_FLAGS_HANDSHAKE_DONE 0x01
60 #define ALTCP_MBEDTLS_FLAGS_APPLDATA_SENT 0x02
61 #define ALTCP_MBEDTLS_FLAGS_RX_CLOSE_QUEUED 0x04
62 #define ALTCP_MBEDTLS_FLAGS_RX_CLOSED 0x08
63 #define ALTCP_MBEDTLS_FLAGS_TX_CLOSED 0x10
64 #define ALTCP_MBEDTLS_FLAGS_CLOSED (ALTCP_MBEDTLS_FLAGS_RX_CLOSED|ALTCP_MBEDTLS_FLAGS_TX_CLOSED)
65 #define ALTCP_MBEDTLS_FLAGS_UPPER_CALLED 0x20
66  
67 typedef struct altcp_mbedtls_state_s {
68 void *conf;
69 mbedtls_ssl_context ssl_context;
70 /* chain of rx pbufs (before decryption) */
71 struct pbuf *rx;
72 struct pbuf *rx_app;
73 u8_t flags;
74 int rx_passed_unrecved;
75 int bio_bytes_read;
76 int bio_bytes_appl;
77 } altcp_mbedtls_state_t;
78  
79 #ifdef __cplusplus
80 }
81 #endif
82  
83 #endif /* LWIP_ALTCP_TLS && LWIP_ALTCP_TLS_MBEDTLS */
84 #endif /* LWIP_ALTCP */
85 #endif /* LWIP_HDR_ALTCP_MBEDTLS_STRUCTS_H */