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