1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** NetX Secure Component                                                 */
16 /**                                                                       */
17 /**    Transport Layer Security (TLS)                                     */
18 /**                                                                       */
19 /**************************************************************************/
20 /**************************************************************************/
21 
22 #define NX_SECURE_SOURCE_CODE
23 
24 #include "nx_secure_tls.h"
25 
26 /**************************************************************************/
27 /*                                                                        */
28 /*  FUNCTION                                               RELEASE        */
29 /*                                                                        */
30 /*    _nx_secure_tls_session_sni_extension_set            PORTABLE C      */
31 /*                                                           6.2.0        */
32 /*  AUTHOR                                                                */
33 /*                                                                        */
34 /*    Timothy Stapko, Microsoft Corporation                               */
35 /*                                                                        */
36 /*  DESCRIPTION                                                           */
37 /*                                                                        */
38 /*    This function checks sets the DNS Name in a TLS client for the      */
39 /*    Server Name Indication (SNI) extension (RFC 6066). The current RFC  */
40 /*    specifies that only a single DNS Name entry is allowed in the SNI   */
41 /*    extension data. If other name types are added in the future, new    */
42 /*    API will be added.                                                  */
43 /*                                                                        */
44 /*  INPUT                                                                 */
45 /*                                                                        */
46 /*    tls_session                           TLS control block             */
47 /*    dns_name                              Pointer to the server name    */
48 /*                                                                        */
49 /*  OUTPUT                                                                */
50 /*                                                                        */
51 /*    status                                Completion status             */
52 /*                                                                        */
53 /*  CALLS                                                                 */
54 /*                                                                        */
55 /*    None                                                                */
56 /*                                                                        */
57 /*  CALLED BY                                                             */
58 /*                                                                        */
59 /*    Application Code                                                    */
60 /*                                                                        */
61 /*  RELEASE HISTORY                                                       */
62 /*                                                                        */
63 /*    DATE              NAME                      DESCRIPTION             */
64 /*                                                                        */
65 /*  05-19-2020     Timothy Stapko           Initial Version 6.0           */
66 /*  09-30-2020     Timothy Stapko           Modified comment(s),          */
67 /*                                            resulting in version 6.1    */
68 /*  10-31-2022     Yanwu Cai                Modified comment(s),          */
69 /*                                            fix compile error,          */
70 /*                                            resulting in version 6.2.0  */
71 /*                                                                        */
72 /**************************************************************************/
_nx_secure_tls_session_sni_extension_set(NX_SECURE_TLS_SESSION * tls_session,NX_SECURE_X509_DNS_NAME * dns_name)73 UINT _nx_secure_tls_session_sni_extension_set(NX_SECURE_TLS_SESSION *tls_session,
74                                               NX_SECURE_X509_DNS_NAME *dns_name)
75 {
76 #ifndef NX_SECURE_TLS_SNI_EXTENSION_DISABLED
77 
78     /* Set the pointer to the SNI DNS name so it can be sent in the ClientHello. */
79     tls_session -> nx_secure_tls_sni_extension_server_name = dns_name;
80 
81     return(NX_SUCCESS);
82 #else
83     NX_PARAMETER_NOT_USED(tls_session);
84     NX_PARAMETER_NOT_USED(dns_name);
85 
86     return(NX_NOT_ENABLED);
87 #endif
88 }
89 
90