1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** NetX Secure Component */ 17 /** */ 18 /** Transport Layer Security (TLS) */ 19 /** */ 20 /**************************************************************************/ 21 /**************************************************************************/ 22 23 #define NX_SECURE_SOURCE_CODE 24 25 #include "nx_secure_tls.h" 26 27 #ifdef NX_SECURE_KEY_CLEAR 28 /**************************************************************************/ 29 /* */ 30 /* FUNCTION RELEASE */ 31 /* */ 32 /* _nx_secure_tls_packet_release PORTABLE C */ 33 /* 6.1 */ 34 /* AUTHOR */ 35 /* */ 36 /* Timothy Stapko, Microsoft Corporation */ 37 /* */ 38 /* DESCRIPTION */ 39 /* */ 40 /* This function releases packet with all data in the packet cleared. */ 41 /* */ 42 /* INPUT */ 43 /* */ 44 /* packet_ptr NX_PACKET to release */ 45 /* */ 46 /* OUTPUT */ 47 /* */ 48 /* status Completion status */ 49 /* */ 50 /* CALLS */ 51 /* */ 52 /* nx_packet_release Release packet */ 53 /* */ 54 /* CALLED BY */ 55 /* */ 56 /* nx_secure_dtls_client_handshake.c */ 57 /* nx_secure_dtls_process_record.c */ 58 /* nx_secure_dtls_receive_callback.c */ 59 /* nx_secure_dtls_retransmit_queue_flush.c */ 60 /* nx_secure_dtls_send_handshake_record.c */ 61 /* nx_secure_dtls_send_record.c */ 62 /* nx_secure_dtls_session_end.c */ 63 /* nx_secure_dtls_session_receive.c */ 64 /* nx_secure_dtls_session_reset.c */ 65 /* nx_secure_dtls_session_start.c */ 66 /* nx_secure_tls_1_3_client_handshake.c */ 67 /* nx_secure_tls_1_3_server_handshake.c */ 68 /* nx_secure_tls_client_handshake.c */ 69 /* nx_secure_tls_handshake_process.c */ 70 /* nx_secure_tls_packet_release.c */ 71 /* nx_secure_tls_process_record.c */ 72 /* nx_secure_tls_record_payload_decrypt.c */ 73 /* nx_secure_tls_send_handshake_record.c */ 74 /* nx_secure_tls_server_handshake.c */ 75 /* nx_secure_tls_session_end.c */ 76 /* nx_secure_tls_session_receive_records.c */ 77 /* nx_secure_tls_session_renegotiate.c */ 78 /* nx_secure_tls_session_start.c */ 79 /* */ 80 /* RELEASE HISTORY */ 81 /* */ 82 /* DATE NAME DESCRIPTION */ 83 /* */ 84 /* 05-19-2020 Timothy Stapko Initial Version 6.1 */ 85 /* */ 86 /**************************************************************************/ _nx_secure_tls_packet_release(NX_PACKET * packet_ptr)87UINT _nx_secure_tls_packet_release(NX_PACKET *packet_ptr) 88 { 89 NX_PACKET *current_packet; 90 91 /* Clear all data in chained packet. */ 92 current_packet = packet_ptr; 93 while (current_packet) 94 { 95 NX_SECURE_MEMSET(current_packet -> nx_packet_data_start, 0, 96 (ULONG)current_packet -> nx_packet_data_end - 97 (ULONG)current_packet -> nx_packet_data_start); 98 current_packet = current_packet -> nx_packet_next; 99 } 100 return(nx_packet_release(packet_ptr)); 101 } 102 #endif /* NX_SECURE_KEY_CLEAR */ 103 104
