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 /**    Datagram Transport Layer Security (DTLS)                           */
18 /**                                                                       */
19 /**************************************************************************/
20 /**************************************************************************/
21 
22 #define NX_SECURE_SOURCE_CODE
23 
24 #include "nx_secure_dtls.h"
25 #include "nx_ipv6.h"
26 
27 /**************************************************************************/
28 /*                                                                        */
29 /*  FUNCTION                                               RELEASE        */
30 /*                                                                        */
31 /*    _nxe_secure_dtls_session_client_info_get            PORTABLE C      */
32 /*                                                           6.1          */
33 /*  AUTHOR                                                                */
34 /*                                                                        */
35 /*    Timothy Stapko, Microsoft Corporation                               */
36 /*                                                                        */
37 /*  DESCRIPTION                                                           */
38 /*                                                                        */
39 /*    This function checks for errors when getting DTLS client info.      */
40 /*                                                                        */
41 /*  INPUT                                                                 */
42 /*                                                                        */
43 /*    dtls_session                          DTLS session control block    */
44 /*    client_ip_address                     Return remote host IP address */
45 /*    client_port                           Return remote host UDP port   */
46 /*    local_port                            Return local UDP port         */
47 /*                                                                        */
48 /*  OUTPUT                                                                */
49 /*                                                                        */
50 /*    status                                Completion status             */
51 /*                                                                        */
52 /*  CALLS                                                                 */
53 /*                                                                        */
54 /*    _nx_secure_dtls_session_client_info_get                             */
55 /*                                          Actual function call          */
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 /*                                                                        */
69 /**************************************************************************/
_nxe_secure_dtls_session_client_info_get(NX_SECURE_DTLS_SESSION * dtls_session,NXD_ADDRESS * client_ip_address,UINT * client_port,UINT * local_port)70 UINT _nxe_secure_dtls_session_client_info_get(NX_SECURE_DTLS_SESSION *dtls_session,
71                                               NXD_ADDRESS *client_ip_address, UINT *client_port, UINT *local_port)
72 {
73 #ifdef NX_SECURE_ENABLE_DTLS
74 NX_UDP_SOCKET *socket_ptr;
75 UINT status;
76 
77     /* Check pointers. */
78     if (dtls_session == NX_NULL || client_ip_address == NX_NULL ||
79         client_port == NX_NULL || local_port == NX_NULL)
80     {
81         return(NX_PTR_ERROR);
82     }
83 
84     /* Make sure the session is initialized. */
85     if (dtls_session->nx_secure_dtls_tls_session.nx_secure_tls_id != NX_SECURE_TLS_ID)
86     {
87         return(NX_SECURE_TLS_SESSION_UNINITIALIZED);
88     }
89 
90     /* Get our UDP socket. */
91     socket_ptr = dtls_session->nx_secure_dtls_udp_socket;
92 
93     /* Check UDP socket. */
94     if (socket_ptr == NX_NULL)
95     {
96         return(NX_INVALID_SOCKET);
97     }
98 
99     /* Call actual function. */
100     status = _nx_secure_dtls_session_client_info_get(dtls_session, client_ip_address, client_port, local_port);
101 
102     return(status);
103 #else
104     NX_PARAMETER_NOT_USED(dtls_session);
105     NX_PARAMETER_NOT_USED(client_ip_address);
106     NX_PARAMETER_NOT_USED(client_port);
107     NX_PARAMETER_NOT_USED(local_port);
108 
109     return(NX_NOT_SUPPORTED);
110 #endif /* NX_SECURE_ENABLE_DTLS */
111 }
112 
113