Outline ![]()
Files ![]()
loading...
CodeScope![]()
STM32 Libraries and Samples![]()
netxduo![]()
nx_secure/src/nxe_secure_tls_session_protocol_version_override.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Secure Component */
/** */
/** Transport Layer Security (TLS) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SECURE_SOURCE_CODE
/* Include necessary system files. */
#include "nx_secure_tls.h"
#ifdef NX_SECURE_ENABLE_DTLS
#include "nx_secure_dtls.h"
#endif /* NX_SECURE_ENABLE_DTLS */
/* Bring in externs for caller checking code. */
NX_SECURE_CALLER_CHECKING_EXTERNS
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxe_secure_tls_session_protocol_version_override PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks for errors in the TLS protocol version */
/* override call. */
/* */
/* INPUT */
/* */
/* tls_session Pointer to TLS Session */
/* protocol_version Version of TLS to use */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nx_secure_tls_session_protocol_version_override */
/* Actual protocol override call */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Timothy Stapko Initial Version 6.0 */
/* 09-30-2020 Timothy Stapko Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
UINT _nxe_secure_tls_session_protocol_version_override(NX_SECURE_TLS_SESSION *tls_session,
USHORT protocol_version)
{
UINT status;
if (tls_session == NX_NULL)
{
return(NX_PTR_ERROR);
}
/* Make sure the version supplied is known and supported. */
switch (protocol_version)
{
/* Supported TLS versions. */
case NX_SECURE_TLS_VERSION_TLS_1_0:
case NX_SECURE_TLS_VERSION_TLS_1_1:
case NX_SECURE_TLS_VERSION_TLS_1_2:
case NX_SECURE_TLS_VERSION_TLS_1_3:
break;
/* DTLS versions are known, but this is a TLS session!
SSLv3 is not supported. */
#ifdef NX_SECURE_ENABLE_DTLS
case NX_SECURE_DTLS_VERSION_1_0:
case NX_SECURE_DTLS_VERSION_1_2:
#endif /* NX_SECURE_ENABLE_DTLS */
case NX_SECURE_TLS_VERSION_SSL_3_0:
return(NX_SECURE_TLS_UNSUPPORTED_TLS_VERSION);
default:
return(NX_SECURE_TLS_UNKNOWN_TLS_VERSION);
}
/* Make sure the session is initialized. */
if(tls_session -> nx_secure_tls_id != NX_SECURE_TLS_ID)
{
return(NX_SECURE_TLS_SESSION_UNINITIALIZED);
}
/* Check for appropriate caller. */
NX_THREADS_ONLY_CALLER_CHECKING
status = _nx_secure_tls_session_protocol_version_override(tls_session, protocol_version);
/* Return completion status. */
return(status);
}