mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-12-15 16:15:08 -05:00
Restructure platform directory (#382)
This updates the platform and logging directory and moves it to the following places: FreeRTOS\FreeRTOS-Plus\Source\Utilities FreeRTOS\FreeRTOS-Plus\Source\Application-Protocols\network_transport\freertos_plus_tcp Project files are updated to follow suite. All updated demos are tested to work as expected.
This commit is contained in:
Oscar Michael Abrina
GitHub
parent
330b8c002f
commit
01e59a036c
47 changed files with 224 additions and 218 deletions
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@ -0,0 +1,168 @@
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/*
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
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* this software and associated documentation files (the "Software"), to deal in
|
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* the Software without restriction, including without limitation the rights to
|
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
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* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
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*
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||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* @file sockets_wrapper.c
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* @brief FreeRTOS Sockets connect and disconnect wrapper implementation.
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*/
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/* Standard includes. */
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#include <string.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "sockets_wrapper.h"
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/*-----------------------------------------------------------*/
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/* Maximum number of times to call FreeRTOS_recv when initiating a graceful shutdown. */
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#ifndef FREERTOS_SOCKETS_WRAPPER_SHUTDOWN_LOOPS
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#define FREERTOS_SOCKETS_WRAPPER_SHUTDOWN_LOOPS ( 3 )
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#endif
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/* A negative error code indicating a network failure. */
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#define FREERTOS_SOCKETS_WRAPPER_NETWORK_ERROR ( -1 )
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/*-----------------------------------------------------------*/
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BaseType_t Sockets_Connect( Socket_t * pTcpSocket,
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const char * pHostName,
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uint16_t port,
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uint32_t receiveTimeoutMs,
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uint32_t sendTimeoutMs )
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{
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Socket_t tcpSocket = FREERTOS_INVALID_SOCKET;
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BaseType_t socketStatus = 0;
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struct freertos_sockaddr serverAddress = { 0 };
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TickType_t transportTimeout = 0;
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/* Create a new TCP socket. */
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tcpSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
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if( tcpSocket == FREERTOS_INVALID_SOCKET )
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{
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LogError( ( "Failed to create new socket." ) );
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socketStatus = FREERTOS_SOCKETS_WRAPPER_NETWORK_ERROR;
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}
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else
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{
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LogDebug( ( "Created new TCP socket." ) );
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/* Connection parameters. */
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serverAddress.sin_family = FREERTOS_AF_INET;
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serverAddress.sin_port = FreeRTOS_htons( port );
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serverAddress.sin_addr = ( uint32_t ) FreeRTOS_gethostbyname( pHostName );
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serverAddress.sin_len = ( uint8_t ) sizeof( serverAddress );
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/* Check for errors from DNS lookup. */
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if( serverAddress.sin_addr == 0U )
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{
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LogError( ( "Failed to connect to server: DNS resolution failed: Hostname=%s.",
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pHostName ) );
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socketStatus = FREERTOS_SOCKETS_WRAPPER_NETWORK_ERROR;
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}
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}
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if( socketStatus == 0 )
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{
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/* Establish connection. */
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LogDebug( ( "Creating TCP Connection to %s.", pHostName ) );
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socketStatus = FreeRTOS_connect( tcpSocket, &serverAddress, sizeof( serverAddress ) );
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if( socketStatus != 0 )
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{
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LogError( ( "Failed to connect to server: FreeRTOS_Connect failed: ReturnCode=%d,"
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" Hostname=%s, Port=%u.",
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socketStatus,
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pHostName,
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port ) );
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}
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}
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if( socketStatus == 0 )
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{
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/* Set socket receive timeout. */
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transportTimeout = pdMS_TO_TICKS( receiveTimeoutMs );
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/* Setting the receive block time cannot fail. */
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( void ) FreeRTOS_setsockopt( tcpSocket,
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0,
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FREERTOS_SO_RCVTIMEO,
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&transportTimeout,
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sizeof( TickType_t ) );
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/* Set socket send timeout. */
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transportTimeout = pdMS_TO_TICKS( sendTimeoutMs );
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/* Setting the send block time cannot fail. */
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( void ) FreeRTOS_setsockopt( tcpSocket,
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0,
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FREERTOS_SO_SNDTIMEO,
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&transportTimeout,
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sizeof( TickType_t ) );
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}
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/* Clean up on failure. */
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if( socketStatus != 0 )
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{
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if( tcpSocket != FREERTOS_INVALID_SOCKET )
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{
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( void ) FreeRTOS_closesocket( tcpSocket );
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}
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}
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else
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{
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/* Set the socket. */
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*pTcpSocket = tcpSocket;
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LogInfo( ( "Established TCP connection with %s.", pHostName ) );
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}
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return socketStatus;
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}
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/*-----------------------------------------------------------*/
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void Sockets_Disconnect( Socket_t tcpSocket )
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{
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BaseType_t waitForShutdownLoopCount = 0;
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uint8_t pDummyBuffer[ 2 ];
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if( tcpSocket != FREERTOS_INVALID_SOCKET )
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{
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/* Initiate graceful shutdown. */
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( void ) FreeRTOS_shutdown( tcpSocket, FREERTOS_SHUT_RDWR );
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/* Wait for the socket to disconnect gracefully (indicated by FreeRTOS_recv()
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* returning a FREERTOS_EINVAL error) before closing the socket. */
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while( FreeRTOS_recv( tcpSocket, pDummyBuffer, sizeof( pDummyBuffer ), 0 ) >= 0 )
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{
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/* We don't need to delay since FreeRTOS_recv should already have a timeout. */
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if( ++waitForShutdownLoopCount >= FREERTOS_SOCKETS_WRAPPER_SHUTDOWN_LOOPS )
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{
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break;
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}
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}
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( void ) FreeRTOS_closesocket( tcpSocket );
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}
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}
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/*-----------------------------------------------------------*/
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@ -0,0 +1,86 @@
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/*
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
|
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
|
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* @file sockets_wrapper.h
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* @brief FreeRTOS Sockets connect and disconnect function wrapper.
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*/
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#ifndef SOCKETS_WRAPPER_H
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#define SOCKETS_WRAPPER_H
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_IP.h"
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#include "FreeRTOS_Sockets.h"
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#include "FreeRTOS_DNS.h"
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/**************************************************/
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/******* DO NOT CHANGE the following order ********/
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/**************************************************/
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/* Logging related header files are required to be included in the following order:
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* 1. Include the header file "logging_levels.h".
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* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
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* 3. Include the header file "logging_stack.h".
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*/
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/* Include header that defines log levels. */
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#include "logging_levels.h"
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/* Logging configuration for the Sockets. */
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#ifndef LIBRARY_LOG_NAME
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#define LIBRARY_LOG_NAME "Sockets"
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#endif
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#ifndef LIBRARY_LOG_LEVEL
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#define LIBRARY_LOG_LEVEL LOG_ERROR
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#endif
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#include "logging_stack.h"
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/************ End of logging configuration ****************/
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/**
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* @brief Establish a connection to server.
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*
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* @param[out] pTcpSocket The output parameter to return the created socket descriptor.
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* @param[in] pHostName Server hostname to connect to.
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* @param[in] pServerInfo Server port to connect to.
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* @param[in] receiveTimeoutMs Timeout (in milliseconds) for transport receive.
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* @param[in] sendTimeoutMs Timeout (in milliseconds) for transport send.
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*
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* @note A timeout of 0 means infinite timeout.
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*
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* @return Non-zero value on error, 0 on success.
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*/
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BaseType_t Sockets_Connect( Socket_t * pTcpSocket,
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const char * pHostName,
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uint16_t port,
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uint32_t receiveTimeoutMs,
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uint32_t sendTimeoutMs );
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/**
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* @brief End connection to server.
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*
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* @param[in] tcpSocket The socket descriptor.
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*/
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void Sockets_Disconnect( Socket_t tcpSocket );
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#endif /* ifndef SOCKETS_WRAPPER_H */
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@ -0,0 +1,811 @@
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/*
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
|
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* @file tls_freertos.c
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* @brief TLS transport interface implementations. This implementation uses
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* mbedTLS.
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*/
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/* Standard includes. */
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#include <string.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_IP.h"
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#include "FreeRTOS_Sockets.h"
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/* TLS transport header. */
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#include "using_mbedtls.h"
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/* FreeRTOS Socket wrapper include. */
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#include "sockets_wrapper.h"
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/* mbedTLS util includes. */
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#include "mbedtls_error.h"
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/*-----------------------------------------------------------*/
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/**
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* @brief Represents string to be logged when mbedTLS returned error
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* does not contain a high-level code.
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*/
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static const char * pNoHighLevelMbedTlsCodeStr = "<No-High-Level-Code>";
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/**
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* @brief Represents string to be logged when mbedTLS returned error
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* does not contain a low-level code.
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*/
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static const char * pNoLowLevelMbedTlsCodeStr = "<No-Low-Level-Code>";
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/**
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* @brief Utility for converting the high-level code in an mbedTLS error to string,
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* if the code-contains a high-level code; otherwise, using a default string.
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*/
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#define mbedtlsHighLevelCodeOrDefault( mbedTlsCode ) \
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( mbedtls_strerror_highlevel( mbedTlsCode ) != NULL ) ? \
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mbedtls_strerror_highlevel( mbedTlsCode ) : pNoHighLevelMbedTlsCodeStr
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/**
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* @brief Utility for converting the level-level code in an mbedTLS error to string,
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* if the code-contains a level-level code; otherwise, using a default string.
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*/
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#define mbedtlsLowLevelCodeOrDefault( mbedTlsCode ) \
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( mbedtls_strerror_lowlevel( mbedTlsCode ) != NULL ) ? \
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mbedtls_strerror_lowlevel( mbedTlsCode ) : pNoLowLevelMbedTlsCodeStr
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/*-----------------------------------------------------------*/
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/**
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* @brief Initialize the mbed TLS structures in a network connection.
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*
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* @param[in] pSslContext The SSL context to initialize.
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*/
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static void sslContextInit( SSLContext_t * pSslContext );
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/**
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* @brief Free the mbed TLS structures in a network connection.
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*
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* @param[in] pSslContext The SSL context to free.
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*/
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static void sslContextFree( SSLContext_t * pSslContext );
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/**
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* @brief Add X509 certificate to the trusted list of root certificates.
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*
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* OpenSSL does not provide a single function for reading and loading certificates
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* from files into stores, so the file API must be called. Start with the
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* root certificate.
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*
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* @param[out] pSslContext SSL context to which the trusted server root CA is to be added.
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* @param[in] pRootCa PEM-encoded string of the trusted server root CA.
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* @param[in] rootCaSize Size of the trusted server root CA.
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*
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* @return 0 on success; otherwise, failure;
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*/
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static int32_t setRootCa( SSLContext_t * pSslContext,
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const uint8_t * pRootCa,
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size_t rootCaSize );
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/**
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* @brief Set X509 certificate as client certificate for the server to authenticate.
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*
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* @param[out] pSslContext SSL context to which the client certificate is to be set.
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* @param[in] pClientCert PEM-encoded string of the client certificate.
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* @param[in] clientCertSize Size of the client certificate.
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*
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* @return 0 on success; otherwise, failure;
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*/
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static int32_t setClientCertificate( SSLContext_t * pSslContext,
|
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const uint8_t * pClientCert,
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size_t clientCertSize );
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|
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/**
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* @brief Set private key for the client's certificate.
|
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*
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* @param[out] pSslContext SSL context to which the private key is to be set.
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* @param[in] pPrivateKey PEM-encoded string of the client private key.
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* @param[in] privateKeySize Size of the client private key.
|
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*
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* @return 0 on success; otherwise, failure;
|
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*/
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static int32_t setPrivateKey( SSLContext_t * pSslContext,
|
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const uint8_t * pPrivateKey,
|
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size_t privateKeySize );
|
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|
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/**
|
||||
* @brief Passes TLS credentials to the OpenSSL library.
|
||||
*
|
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* Provides the root CA certificate, client certificate, and private key to the
|
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* OpenSSL library. If the client certificate or private key is not NULL, mutual
|
||||
* authentication is used when performing the TLS handshake.
|
||||
*
|
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* @param[out] pSslContext SSL context to which the credentials are to be imported.
|
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* @param[in] pNetworkCredentials TLS credentials to be imported.
|
||||
*
|
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* @return 0 on success; otherwise, failure;
|
||||
*/
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static int32_t setCredentials( SSLContext_t * pSslContext,
|
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const NetworkCredentials_t * pNetworkCredentials );
|
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|
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/**
|
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* @brief Set optional configurations for the TLS connection.
|
||||
*
|
||||
* This function is used to set SNI and ALPN protocols.
|
||||
*
|
||||
* @param[in] pSslContext SSL context to which the optional configurations are to be set.
|
||||
* @param[in] pHostName Remote host name, used for server name indication.
|
||||
* @param[in] pNetworkCredentials TLS setup parameters.
|
||||
*/
|
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static void setOptionalConfigurations( SSLContext_t * pSslContext,
|
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const char * pHostName,
|
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const NetworkCredentials_t * pNetworkCredentials );
|
||||
|
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/**
|
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* @brief Setup TLS by initializing contexts and setting configurations.
|
||||
*
|
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* @param[in] pNetworkContext Network context.
|
||||
* @param[in] pHostName Remote host name, used for server name indication.
|
||||
* @param[in] pNetworkCredentials TLS setup parameters.
|
||||
*
|
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* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
|
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* or #TLS_TRANSPORT_INTERNAL_ERROR.
|
||||
*/
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static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetworkContext,
|
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const char * pHostName,
|
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const NetworkCredentials_t * pNetworkCredentials );
|
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|
||||
/**
|
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* @brief Perform the TLS handshake on a TCP connection.
|
||||
*
|
||||
* @param[in] pNetworkContext Network context.
|
||||
* @param[in] pNetworkCredentials TLS setup parameters.
|
||||
*
|
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* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_HANDSHAKE_FAILED, or #TLS_TRANSPORT_INTERNAL_ERROR.
|
||||
*/
|
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static TlsTransportStatus_t tlsHandshake( NetworkContext_t * pNetworkContext,
|
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const NetworkCredentials_t * pNetworkCredentials );
|
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|
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/**
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* @brief Initialize mbedTLS.
|
||||
*
|
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* @param[out] entropyContext mbed TLS entropy context for generation of random numbers.
|
||||
* @param[out] ctrDrgbContext mbed TLS CTR DRBG context for generation of random numbers.
|
||||
*
|
||||
* @return #TLS_TRANSPORT_SUCCESS, or #TLS_TRANSPORT_INTERNAL_ERROR.
|
||||
*/
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||||
static TlsTransportStatus_t initMbedtls( mbedtls_entropy_context * pEntropyContext,
|
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mbedtls_ctr_drbg_context * pCtrDrgbContext );
|
||||
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||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void sslContextInit( SSLContext_t * pSslContext )
|
||||
{
|
||||
configASSERT( pSslContext != NULL );
|
||||
|
||||
mbedtls_ssl_config_init( &( pSslContext->config ) );
|
||||
mbedtls_x509_crt_init( &( pSslContext->rootCa ) );
|
||||
mbedtls_pk_init( &( pSslContext->privKey ) );
|
||||
mbedtls_x509_crt_init( &( pSslContext->clientCert ) );
|
||||
mbedtls_ssl_init( &( pSslContext->context ) );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void sslContextFree( SSLContext_t * pSslContext )
|
||||
{
|
||||
configASSERT( pSslContext != NULL );
|
||||
|
||||
mbedtls_ssl_free( &( pSslContext->context ) );
|
||||
mbedtls_x509_crt_free( &( pSslContext->rootCa ) );
|
||||
mbedtls_x509_crt_free( &( pSslContext->clientCert ) );
|
||||
mbedtls_pk_free( &( pSslContext->privKey ) );
|
||||
mbedtls_entropy_free( &( pSslContext->entropyContext ) );
|
||||
mbedtls_ctr_drbg_free( &( pSslContext->ctrDrgbContext ) );
|
||||
mbedtls_ssl_config_free( &( pSslContext->config ) );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t setRootCa( SSLContext_t * pSslContext,
|
||||
const uint8_t * pRootCa,
|
||||
size_t rootCaSize )
|
||||
{
|
||||
int32_t mbedtlsError = -1;
|
||||
|
||||
configASSERT( pSslContext != NULL );
|
||||
configASSERT( pRootCa != NULL );
|
||||
|
||||
/* Parse the server root CA certificate into the SSL context. */
|
||||
mbedtlsError = mbedtls_x509_crt_parse( &( pSslContext->rootCa ),
|
||||
pRootCa,
|
||||
rootCaSize );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to parse server root CA certificate: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
mbedtls_ssl_conf_ca_chain( &( pSslContext->config ),
|
||||
&( pSslContext->rootCa ),
|
||||
NULL );
|
||||
}
|
||||
|
||||
return mbedtlsError;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t setClientCertificate( SSLContext_t * pSslContext,
|
||||
const uint8_t * pClientCert,
|
||||
size_t clientCertSize )
|
||||
{
|
||||
int32_t mbedtlsError = -1;
|
||||
|
||||
configASSERT( pSslContext != NULL );
|
||||
configASSERT( pClientCert != NULL );
|
||||
|
||||
/* Setup the client certificate. */
|
||||
mbedtlsError = mbedtls_x509_crt_parse( &( pSslContext->clientCert ),
|
||||
pClientCert,
|
||||
clientCertSize );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to parse the client certificate: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
|
||||
return mbedtlsError;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t setPrivateKey( SSLContext_t * pSslContext,
|
||||
const uint8_t * pPrivateKeyPath,
|
||||
size_t privateKeySize )
|
||||
{
|
||||
int32_t mbedtlsError = -1;
|
||||
|
||||
configASSERT( pSslContext != NULL );
|
||||
configASSERT( pPrivateKeyPath != NULL );
|
||||
|
||||
/* Setup the client private key. */
|
||||
mbedtlsError = mbedtls_pk_parse_key( &( pSslContext->privKey ),
|
||||
pPrivateKeyPath,
|
||||
privateKeySize,
|
||||
NULL,
|
||||
0 );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to parse the client key: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
|
||||
return mbedtlsError;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t setCredentials( SSLContext_t * pSslContext,
|
||||
const NetworkCredentials_t * pNetworkCredentials )
|
||||
{
|
||||
int32_t mbedtlsError = -1;
|
||||
|
||||
configASSERT( pSslContext != NULL );
|
||||
configASSERT( pNetworkCredentials != NULL );
|
||||
|
||||
/* Set up the certificate security profile, starting from the default value. */
|
||||
pSslContext->certProfile = mbedtls_x509_crt_profile_default;
|
||||
|
||||
/* Set SSL authmode and the RNG context. */
|
||||
mbedtls_ssl_conf_authmode( &( pSslContext->config ),
|
||||
MBEDTLS_SSL_VERIFY_REQUIRED );
|
||||
mbedtls_ssl_conf_rng( &( pSslContext->config ),
|
||||
mbedtls_ctr_drbg_random,
|
||||
&( pSslContext->ctrDrgbContext ) );
|
||||
mbedtls_ssl_conf_cert_profile( &( pSslContext->config ),
|
||||
&( pSslContext->certProfile ) );
|
||||
|
||||
mbedtlsError = setRootCa( pSslContext,
|
||||
pNetworkCredentials->pRootCa,
|
||||
pNetworkCredentials->rootCaSize );
|
||||
|
||||
if( ( pNetworkCredentials->pClientCert != NULL ) &&
|
||||
( pNetworkCredentials->pPrivateKey != NULL ) )
|
||||
{
|
||||
if( mbedtlsError == 0 )
|
||||
{
|
||||
mbedtlsError = setClientCertificate( pSslContext,
|
||||
pNetworkCredentials->pClientCert,
|
||||
pNetworkCredentials->clientCertSize );
|
||||
}
|
||||
|
||||
if( mbedtlsError == 0 )
|
||||
{
|
||||
mbedtlsError = setPrivateKey( pSslContext,
|
||||
pNetworkCredentials->pPrivateKey,
|
||||
pNetworkCredentials->privateKeySize );
|
||||
}
|
||||
|
||||
if( mbedtlsError == 0 )
|
||||
{
|
||||
mbedtlsError = mbedtls_ssl_conf_own_cert( &( pSslContext->config ),
|
||||
&( pSslContext->clientCert ),
|
||||
&( pSslContext->privKey ) );
|
||||
}
|
||||
}
|
||||
|
||||
return mbedtlsError;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void setOptionalConfigurations( SSLContext_t * pSslContext,
|
||||
const char * pHostName,
|
||||
const NetworkCredentials_t * pNetworkCredentials )
|
||||
{
|
||||
int32_t mbedtlsError = -1;
|
||||
|
||||
configASSERT( pSslContext != NULL );
|
||||
configASSERT( pHostName != NULL );
|
||||
configASSERT( pNetworkCredentials != NULL );
|
||||
|
||||
if( pNetworkCredentials->pAlpnProtos != NULL )
|
||||
{
|
||||
/* Include an application protocol list in the TLS ClientHello
|
||||
* message. */
|
||||
mbedtlsError = mbedtls_ssl_conf_alpn_protocols( &( pSslContext->config ),
|
||||
pNetworkCredentials->pAlpnProtos );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to configure ALPN protocol in mbed TLS: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
}
|
||||
|
||||
/* Enable SNI if requested. */
|
||||
if( pNetworkCredentials->disableSni == pdFALSE )
|
||||
{
|
||||
mbedtlsError = mbedtls_ssl_set_hostname( &( pSslContext->context ),
|
||||
pHostName );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set server name: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
}
|
||||
|
||||
/* Set Maximum Fragment Length if enabled. */
|
||||
#ifdef MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
|
||||
|
||||
/* Enable the max fragment extension. 4096 bytes is currently the largest fragment size permitted.
|
||||
* See RFC 8449 https://tools.ietf.org/html/rfc8449 for more information.
|
||||
*
|
||||
* Smaller values can be found in "mbedtls/include/ssl.h".
|
||||
*/
|
||||
mbedtlsError = mbedtls_ssl_conf_max_frag_len( &( pSslContext->config ), MBEDTLS_SSL_MAX_FRAG_LEN_4096 );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to maximum fragment length extension: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
}
|
||||
#endif /* ifdef MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
const NetworkCredentials_t * pNetworkCredentials )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
int32_t mbedtlsError = 0;
|
||||
|
||||
configASSERT( pNetworkContext != NULL );
|
||||
configASSERT( pHostName != NULL );
|
||||
configASSERT( pNetworkCredentials != NULL );
|
||||
configASSERT( pNetworkCredentials->pRootCa != NULL );
|
||||
|
||||
/* Initialize the mbed TLS context structures. */
|
||||
sslContextInit( &( pNetworkContext->sslContext ) );
|
||||
|
||||
mbedtlsError = mbedtls_ssl_config_defaults( &( pNetworkContext->sslContext.config ),
|
||||
MBEDTLS_SSL_IS_CLIENT,
|
||||
MBEDTLS_SSL_TRANSPORT_STREAM,
|
||||
MBEDTLS_SSL_PRESET_DEFAULT );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set default SSL configuration: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
/* Per mbed TLS docs, mbedtls_ssl_config_defaults only fails on memory allocation. */
|
||||
returnStatus = TLS_TRANSPORT_INSUFFICIENT_MEMORY;
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
mbedtlsError = setCredentials( &( pNetworkContext->sslContext ),
|
||||
pNetworkCredentials );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Optionally set SNI and ALPN protocols. */
|
||||
setOptionalConfigurations( &( pNetworkContext->sslContext ),
|
||||
pHostName,
|
||||
pNetworkCredentials );
|
||||
}
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static TlsTransportStatus_t tlsHandshake( NetworkContext_t * pNetworkContext,
|
||||
const NetworkCredentials_t * pNetworkCredentials )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
int32_t mbedtlsError = 0;
|
||||
|
||||
configASSERT( pNetworkContext != NULL );
|
||||
configASSERT( pNetworkCredentials != NULL );
|
||||
|
||||
/* Initialize the mbed TLS secured connection context. */
|
||||
mbedtlsError = mbedtls_ssl_setup( &( pNetworkContext->sslContext.context ),
|
||||
&( pNetworkContext->sslContext.config ) );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set up mbed TLS SSL context: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set the underlying IO for the TLS connection. */
|
||||
|
||||
/* MISRA Rule 11.2 flags the following line for casting the second
|
||||
* parameter to void *. This rule is suppressed because
|
||||
* #mbedtls_ssl_set_bio requires the second parameter as void *.
|
||||
*/
|
||||
/* coverity[misra_c_2012_rule_11_2_violation] */
|
||||
mbedtls_ssl_set_bio( &( pNetworkContext->sslContext.context ),
|
||||
( void * ) pNetworkContext->tcpSocket,
|
||||
mbedtls_platform_send,
|
||||
mbedtls_platform_recv,
|
||||
NULL );
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Perform the TLS handshake. */
|
||||
do
|
||||
{
|
||||
mbedtlsError = mbedtls_ssl_handshake( &( pNetworkContext->sslContext.context ) );
|
||||
} while( ( mbedtlsError == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( mbedtlsError == MBEDTLS_ERR_SSL_WANT_WRITE ) );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to perform TLS handshake: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_HANDSHAKE_FAILED;
|
||||
}
|
||||
else
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) TLS handshake successful.",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static TlsTransportStatus_t initMbedtls( mbedtls_entropy_context * pEntropyContext,
|
||||
mbedtls_ctr_drbg_context * pCtrDrgbContext )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
int32_t mbedtlsError = 0;
|
||||
|
||||
/* Set the mutex functions for mbed TLS thread safety. */
|
||||
mbedtls_threading_set_alt( mbedtls_platform_mutex_init,
|
||||
mbedtls_platform_mutex_free,
|
||||
mbedtls_platform_mutex_lock,
|
||||
mbedtls_platform_mutex_unlock );
|
||||
|
||||
/* Initialize contexts for random number generation. */
|
||||
mbedtls_entropy_init( pEntropyContext );
|
||||
mbedtls_ctr_drbg_init( pCtrDrgbContext );
|
||||
|
||||
/* Add a strong entropy source. At least one is required. */
|
||||
mbedtlsError = mbedtls_entropy_add_source( pEntropyContext,
|
||||
mbedtls_platform_entropy_poll,
|
||||
NULL,
|
||||
32,
|
||||
MBEDTLS_ENTROPY_SOURCE_STRONG );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to add entropy source: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Seed the random number generator. */
|
||||
mbedtlsError = mbedtls_ctr_drbg_seed( pCtrDrgbContext,
|
||||
mbedtls_entropy_func,
|
||||
pEntropyContext,
|
||||
NULL,
|
||||
0 );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to seed PRNG: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
LogDebug( ( "Successfully initialized mbedTLS." ) );
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
const NetworkCredentials_t * pNetworkCredentials,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
BaseType_t socketStatus = 0;
|
||||
|
||||
if( ( pNetworkContext == NULL ) ||
|
||||
( pHostName == NULL ) ||
|
||||
( pNetworkCredentials == NULL ) )
|
||||
{
|
||||
LogError( ( "Invalid input parameter(s): Arguments cannot be NULL. pNetworkContext=%p, "
|
||||
"pHostName=%p, pNetworkCredentials=%p.",
|
||||
pNetworkContext,
|
||||
pHostName,
|
||||
pNetworkCredentials ) );
|
||||
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else if( ( pNetworkCredentials->pRootCa == NULL ) )
|
||||
{
|
||||
LogError( ( "pRootCa cannot be NULL." ) );
|
||||
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else for MISRA 15.7 compliance. */
|
||||
}
|
||||
|
||||
/* Establish a TCP connection with the server. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
socketStatus = Sockets_Connect( &( pNetworkContext->tcpSocket ),
|
||||
pHostName,
|
||||
port,
|
||||
receiveTimeoutMs,
|
||||
sendTimeoutMs );
|
||||
|
||||
if( socketStatus != 0 )
|
||||
{
|
||||
LogError( ( "Failed to connect to %s with error %d.",
|
||||
pHostName,
|
||||
socketStatus ) );
|
||||
returnStatus = TLS_TRANSPORT_CONNECT_FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize mbedtls. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
returnStatus = initMbedtls( &( pNetworkContext->sslContext.entropyContext ),
|
||||
&( pNetworkContext->sslContext.ctrDrgbContext ) );
|
||||
}
|
||||
|
||||
/* Initialize TLS contexts and set credentials. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
returnStatus = tlsSetup( pNetworkContext, pHostName, pNetworkCredentials );
|
||||
}
|
||||
|
||||
/* Perform TLS handshake. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
returnStatus = tlsHandshake( pNetworkContext, pNetworkCredentials );
|
||||
}
|
||||
|
||||
/* Clean up on failure. */
|
||||
if( returnStatus != TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
if( pNetworkContext != NULL )
|
||||
{
|
||||
sslContextFree( &( pNetworkContext->sslContext ) );
|
||||
|
||||
if( pNetworkContext->tcpSocket != FREERTOS_INVALID_SOCKET )
|
||||
{
|
||||
( void ) FreeRTOS_closesocket( pNetworkContext->tcpSocket );
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) Connection to %s established.",
|
||||
pNetworkContext,
|
||||
pHostName ) );
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext )
|
||||
{
|
||||
BaseType_t tlsStatus = 0;
|
||||
|
||||
if( pNetworkContext != NULL )
|
||||
{
|
||||
/* Attempting to terminate TLS connection. */
|
||||
tlsStatus = ( BaseType_t ) mbedtls_ssl_close_notify( &( pNetworkContext->sslContext.context ) );
|
||||
|
||||
/* Ignore the WANT_READ and WANT_WRITE return values. */
|
||||
if( ( tlsStatus != ( BaseType_t ) MBEDTLS_ERR_SSL_WANT_READ ) &&
|
||||
( tlsStatus != ( BaseType_t ) MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
if( tlsStatus == 0 )
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) TLS close-notify sent.",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
LogError( ( "(Network connection %p) Failed to send TLS close-notify: mbedTLSError= %s : %s.",
|
||||
pNetworkContext,
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* WANT_READ and WANT_WRITE can be ignored. Logging for debugging purposes. */
|
||||
LogInfo( ( "(Network connection %p) TLS close-notify sent; ",
|
||||
"received %s as the TLS status can be ignored for close-notify."
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ? "WANT_READ" : "WANT_WRITE",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
|
||||
/* Call socket shutdown function to close connection. */
|
||||
Sockets_Disconnect( pNetworkContext->tcpSocket );
|
||||
|
||||
/* Free mbed TLS contexts. */
|
||||
sslContextFree( &( pNetworkContext->sslContext ) );
|
||||
}
|
||||
|
||||
/* Clear the mutex functions for mbed TLS thread safety. */
|
||||
mbedtls_threading_free_alt();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv )
|
||||
{
|
||||
int32_t tlsStatus = 0;
|
||||
|
||||
tlsStatus = ( int32_t ) mbedtls_ssl_read( &( pNetworkContext->sslContext.context ),
|
||||
pBuffer,
|
||||
bytesToRecv );
|
||||
|
||||
if( ( tlsStatus == MBEDTLS_ERR_SSL_TIMEOUT ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
LogDebug( ( "Failed to read data. However, a read can be retried on this error. "
|
||||
"mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
|
||||
/* Mark these set of errors as a timeout. The libraries may retry read
|
||||
* on these errors. */
|
||||
tlsStatus = 0;
|
||||
}
|
||||
else if( tlsStatus < 0 )
|
||||
{
|
||||
LogError( ( "Failed to read data: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else marker. */
|
||||
}
|
||||
|
||||
return tlsStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend )
|
||||
{
|
||||
int32_t tlsStatus = 0;
|
||||
|
||||
tlsStatus = ( int32_t ) mbedtls_ssl_write( &( pNetworkContext->sslContext.context ),
|
||||
pBuffer,
|
||||
bytesToSend );
|
||||
|
||||
if( ( tlsStatus == MBEDTLS_ERR_SSL_TIMEOUT ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
LogDebug( ( "Failed to send data. However, send can be retried on this error. "
|
||||
"mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
|
||||
/* Mark these set of errors as a timeout. The libraries may retry send
|
||||
* on these errors. */
|
||||
tlsStatus = 0;
|
||||
}
|
||||
else if( tlsStatus < 0 )
|
||||
{
|
||||
LogError( ( "Failed to send data: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else marker. */
|
||||
}
|
||||
|
||||
return tlsStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,199 @@
|
|||
/*
|
||||
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file tls_freertos.h
|
||||
* @brief TLS transport interface header.
|
||||
*/
|
||||
|
||||
#ifndef USING_MBEDTLS
|
||||
#define USING_MBEDTLS
|
||||
|
||||
/**************************************************/
|
||||
/******* DO NOT CHANGE the following order ********/
|
||||
/**************************************************/
|
||||
|
||||
/* Logging related header files are required to be included in the following order:
|
||||
* 1. Include the header file "logging_levels.h".
|
||||
* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
|
||||
* 3. Include the header file "logging_stack.h".
|
||||
*/
|
||||
|
||||
/* Include header that defines log levels. */
|
||||
#include "logging_levels.h"
|
||||
|
||||
/* Logging configuration for the Sockets. */
|
||||
#ifndef LIBRARY_LOG_NAME
|
||||
#define LIBRARY_LOG_NAME "TlsTransport"
|
||||
#endif
|
||||
#ifndef LIBRARY_LOG_LEVEL
|
||||
#define LIBRARY_LOG_LEVEL LOG_ERROR
|
||||
#endif
|
||||
|
||||
#include "logging_stack.h"
|
||||
|
||||
/************ End of logging configuration ****************/
|
||||
|
||||
/* FreeRTOS+TCP include. */
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
|
||||
/* Transport interface include. */
|
||||
#include "transport_interface.h"
|
||||
|
||||
/* mbed TLS includes. */
|
||||
#include "mbedtls/ctr_drbg.h"
|
||||
#include "mbedtls/entropy.h"
|
||||
#include "mbedtls/ssl.h"
|
||||
#include "mbedtls/threading.h"
|
||||
#include "mbedtls/x509.h"
|
||||
|
||||
/**
|
||||
* @brief Secured connection context.
|
||||
*/
|
||||
typedef struct SSLContext
|
||||
{
|
||||
mbedtls_ssl_config config; /**< @brief SSL connection configuration. */
|
||||
mbedtls_ssl_context context; /**< @brief SSL connection context */
|
||||
mbedtls_x509_crt_profile certProfile; /**< @brief Certificate security profile for this connection. */
|
||||
mbedtls_x509_crt rootCa; /**< @brief Root CA certificate context. */
|
||||
mbedtls_x509_crt clientCert; /**< @brief Client certificate context. */
|
||||
mbedtls_pk_context privKey; /**< @brief Client private key context. */
|
||||
mbedtls_entropy_context entropyContext; /**< @brief Entropy context for random number generation. */
|
||||
mbedtls_ctr_drbg_context ctrDrgbContext; /**< @brief CTR DRBG context for random number generation. */
|
||||
} SSLContext_t;
|
||||
|
||||
/**
|
||||
* @brief Definition of the network context for the transport interface
|
||||
* implementation that uses mbedTLS and FreeRTOS+TLS sockets.
|
||||
*/
|
||||
struct NetworkContext
|
||||
{
|
||||
Socket_t tcpSocket;
|
||||
SSLContext_t sslContext;
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Contains the credentials necessary for tls connection setup.
|
||||
*/
|
||||
typedef struct NetworkCredentials
|
||||
{
|
||||
/**
|
||||
* @brief To use ALPN, set this to a NULL-terminated list of supported
|
||||
* protocols in decreasing order of preference.
|
||||
*
|
||||
* See [this link]
|
||||
* (https://aws.amazon.com/blogs/iot/mqtt-with-tls-client-authentication-on-port-443-why-it-is-useful-and-how-it-works/)
|
||||
* for more information.
|
||||
*/
|
||||
const char ** pAlpnProtos;
|
||||
|
||||
/**
|
||||
* @brief Disable server name indication (SNI) for a TLS session.
|
||||
*/
|
||||
BaseType_t disableSni;
|
||||
|
||||
const uint8_t * pRootCa; /**< @brief String representing a trusted server root certificate. */
|
||||
size_t rootCaSize; /**< @brief Size associated with #NetworkCredentials.pRootCa. */
|
||||
const uint8_t * pClientCert; /**< @brief String representing the client certificate. */
|
||||
size_t clientCertSize; /**< @brief Size associated with #NetworkCredentials.pClientCert. */
|
||||
const uint8_t * pPrivateKey; /**< @brief String representing the client certificate's private key. */
|
||||
size_t privateKeySize; /**< @brief Size associated with #NetworkCredentials.pPrivateKey. */
|
||||
} NetworkCredentials_t;
|
||||
|
||||
/**
|
||||
* @brief TLS Connect / Disconnect return status.
|
||||
*/
|
||||
typedef enum TlsTransportStatus
|
||||
{
|
||||
TLS_TRANSPORT_SUCCESS = 0, /**< Function successfully completed. */
|
||||
TLS_TRANSPORT_INVALID_PARAMETER, /**< At least one parameter was invalid. */
|
||||
TLS_TRANSPORT_INSUFFICIENT_MEMORY, /**< Insufficient memory required to establish connection. */
|
||||
TLS_TRANSPORT_INVALID_CREDENTIALS, /**< Provided credentials were invalid. */
|
||||
TLS_TRANSPORT_HANDSHAKE_FAILED, /**< Performing TLS handshake with server failed. */
|
||||
TLS_TRANSPORT_INTERNAL_ERROR, /**< A call to a system API resulted in an internal error. */
|
||||
TLS_TRANSPORT_CONNECT_FAILURE /**< Initial connection to the server failed. */
|
||||
} TlsTransportStatus_t;
|
||||
|
||||
/**
|
||||
* @brief Create a TLS connection with FreeRTOS sockets.
|
||||
*
|
||||
* @param[out] pNetworkContext Pointer to a network context to contain the
|
||||
* initialized socket handle.
|
||||
* @param[in] pHostName The hostname of the remote endpoint.
|
||||
* @param[in] port The destination port.
|
||||
* @param[in] pNetworkCredentials Credentials for the TLS connection.
|
||||
* @param[in] receiveTimeoutMs Receive socket timeout.
|
||||
* @param[in] sendTimeoutMs Send socket timeout.
|
||||
*
|
||||
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
|
||||
* #TLS_TRANSPORT_HANDSHAKE_FAILED, #TLS_TRANSPORT_INTERNAL_ERROR, or #TLS_TRANSPORT_CONNECT_FAILURE.
|
||||
*/
|
||||
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
const NetworkCredentials_t * pNetworkCredentials,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs );
|
||||
|
||||
/**
|
||||
* @brief Gracefully disconnect an established TLS connection.
|
||||
*
|
||||
* @param[in] pNetworkContext Network context.
|
||||
*/
|
||||
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext );
|
||||
|
||||
/**
|
||||
* @brief Receives data from an established TLS connection.
|
||||
*
|
||||
* This is the TLS version of the transport interface's
|
||||
* #TransportRecv_t function.
|
||||
*
|
||||
* @param[in] pNetworkContext The Network context.
|
||||
* @param[out] pBuffer Buffer to receive bytes into.
|
||||
* @param[in] bytesToRecv Number of bytes to receive from the network.
|
||||
*
|
||||
* @return Number of bytes (> 0) received if successful;
|
||||
* 0 if the socket times out without reading any bytes;
|
||||
* negative value on error.
|
||||
*/
|
||||
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv );
|
||||
|
||||
/**
|
||||
* @brief Sends data over an established TLS connection.
|
||||
*
|
||||
* This is the TLS version of the transport interface's
|
||||
* #TransportSend_t function.
|
||||
*
|
||||
* @param[in] pNetworkContext The network context.
|
||||
* @param[in] pBuffer Buffer containing the bytes to send.
|
||||
* @param[in] bytesToSend Number of bytes to send from the buffer.
|
||||
*
|
||||
* @return Number of bytes (> 0) sent on success;
|
||||
* 0 if the socket times out without sending any bytes;
|
||||
* else a negative value to represent error.
|
||||
*/
|
||||
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend );
|
||||
|
||||
#endif /* ifndef USING_MBEDTLS */
|
||||
|
|
@ -0,0 +1,975 @@
|
|||
/*
|
||||
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file tls_freertos_pkcs11.c
|
||||
* @brief TLS transport interface implementations. This implementation uses
|
||||
* mbedTLS.
|
||||
* @note This file is derived from the tls_freertos.c source file found in the mqtt
|
||||
* section of IoT Libraries source code. The file has been modified to support using
|
||||
* PKCS #11 when using TLS.
|
||||
*/
|
||||
|
||||
/* Standard includes. */
|
||||
#include <string.h>
|
||||
|
||||
/* FreeRTOS includes. */
|
||||
#include "FreeRTOS.h"
|
||||
|
||||
/* FreeRTOS+TCP includes. */
|
||||
#include "FreeRTOS_IP.h"
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
|
||||
/* TLS transport header. */
|
||||
#include "using_mbedtls_pkcs11.h"
|
||||
|
||||
/* FreeRTOS Socket wrapper include. */
|
||||
#include "sockets_wrapper.h"
|
||||
|
||||
/* mbedTLS util includes. */
|
||||
#include "mbedtls_error.h"
|
||||
|
||||
/* PKCS #11 includes. */
|
||||
#include "core_pkcs11_config.h"
|
||||
#include "core_pkcs11.h"
|
||||
#include "pkcs11.h"
|
||||
#include "core_pki_utils.h"
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/**
|
||||
* @brief Represents string to be logged when mbedTLS returned error
|
||||
* does not contain a high-level code.
|
||||
*/
|
||||
static const char * pNoHighLevelMbedTlsCodeStr = "<No-High-Level-Code>";
|
||||
|
||||
/**
|
||||
* @brief Represents string to be logged when mbedTLS returned error
|
||||
* does not contain a low-level code.
|
||||
*/
|
||||
static const char * pNoLowLevelMbedTlsCodeStr = "<No-Low-Level-Code>";
|
||||
|
||||
/**
|
||||
* @brief Utility for converting the high-level code in an mbedTLS error to string,
|
||||
* if the code-contains a high-level code; otherwise, using a default string.
|
||||
*/
|
||||
#define mbedtlsHighLevelCodeOrDefault( mbedTlsCode ) \
|
||||
( mbedtls_strerror_highlevel( mbedTlsCode ) != NULL ) ? \
|
||||
mbedtls_strerror_highlevel( mbedTlsCode ) : pNoHighLevelMbedTlsCodeStr
|
||||
|
||||
/**
|
||||
* @brief Utility for converting the level-level code in an mbedTLS error to string,
|
||||
* if the code-contains a level-level code; otherwise, using a default string.
|
||||
*/
|
||||
#define mbedtlsLowLevelCodeOrDefault( mbedTlsCode ) \
|
||||
( mbedtls_strerror_lowlevel( mbedTlsCode ) != NULL ) ? \
|
||||
mbedtls_strerror_lowlevel( mbedTlsCode ) : pNoLowLevelMbedTlsCodeStr
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/**
|
||||
* @brief Initialize the mbed TLS structures in a network connection.
|
||||
*
|
||||
* @param[in] pSslContext The SSL context to initialize.
|
||||
*/
|
||||
static void sslContextInit( SSLContext_t * pSslContext );
|
||||
|
||||
/**
|
||||
* @brief Free the mbed TLS structures in a network connection.
|
||||
*
|
||||
* @param[in] pSslContext The SSL context to free.
|
||||
*/
|
||||
static void sslContextFree( SSLContext_t * pSslContext );
|
||||
|
||||
/**
|
||||
* @brief Set up TLS on a TCP connection.
|
||||
*
|
||||
* @param[in] pNetworkContext Network context.
|
||||
* @param[in] pHostName Remote host name, used for server name indication.
|
||||
* @param[in] pNetworkCredentials TLS setup parameters.
|
||||
*
|
||||
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
|
||||
* #TLS_TRANSPORT_HANDSHAKE_FAILED, or #TLS_TRANSPORT_INTERNAL_ERROR.
|
||||
*/
|
||||
static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
const NetworkCredentials_t * pNetworkCredentials );
|
||||
|
||||
/**
|
||||
* @brief Initialize mbedTLS.
|
||||
*
|
||||
* @return #TLS_TRANSPORT_SUCCESS, or #TLS_TRANSPORT_INTERNAL_ERROR.
|
||||
*/
|
||||
static TlsTransportStatus_t initMbedtls( void );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/**
|
||||
* @brief Callback that wraps PKCS#11 for pseudo-random number generation.
|
||||
*
|
||||
* @param[in] pvCtx Caller context.
|
||||
* @param[in] pucRandom Byte array to fill with random data.
|
||||
* @param[in] xRandomLength Length of byte array.
|
||||
*
|
||||
* @return Zero on success.
|
||||
*/
|
||||
static int32_t generateRandomBytes( void * pvCtx,
|
||||
unsigned char * pucRandom,
|
||||
size_t xRandomLength );
|
||||
|
||||
/**
|
||||
* @brief Helper for reading the specified certificate object, if present,
|
||||
* out of storage, into RAM, and then into an mbedTLS certificate context
|
||||
* object.
|
||||
*
|
||||
* @param[in] pSslContext Caller TLS context.
|
||||
* @param[in] pcLabelName PKCS #11 certificate object label.
|
||||
* @param[in] xClass PKCS #11 certificate object class.
|
||||
* @param[out] pxCertificateContext Certificate context.
|
||||
*
|
||||
* @return Zero on success.
|
||||
*/
|
||||
static CK_RV readCertificateIntoContext( SSLContext_t * pSslContext,
|
||||
char * pcLabelName,
|
||||
CK_OBJECT_CLASS xClass,
|
||||
mbedtls_x509_crt * pxCertificateContext );
|
||||
|
||||
/**
|
||||
* @brief Helper for setting up potentially hardware-based cryptographic context.
|
||||
*
|
||||
* @param Caller context.
|
||||
*
|
||||
* @return Zero on success.
|
||||
*/
|
||||
static CK_RV initializeClientKeys( SSLContext_t * pxCtx );
|
||||
|
||||
/**
|
||||
* @brief Sign a cryptographic hash with the private key.
|
||||
*
|
||||
* @param[in] pvContext Crypto context.
|
||||
* @param[in] xMdAlg Unused.
|
||||
* @param[in] pucHash Length in bytes of hash to be signed.
|
||||
* @param[in] uiHashLen Byte array of hash to be signed.
|
||||
* @param[out] pucSig RSA signature bytes.
|
||||
* @param[in] pxSigLen Length in bytes of signature buffer.
|
||||
* @param[in] piRng Unused.
|
||||
* @param[in] pvRng Unused.
|
||||
*
|
||||
* @return Zero on success.
|
||||
*/
|
||||
static int32_t privateKeySigningCallback( void * pvContext,
|
||||
mbedtls_md_type_t xMdAlg,
|
||||
const unsigned char * pucHash,
|
||||
size_t xHashLen,
|
||||
unsigned char * pucSig,
|
||||
size_t * pxSigLen,
|
||||
int32_t ( * piRng )( void *,
|
||||
unsigned char *,
|
||||
size_t ),
|
||||
void * pvRng );
|
||||
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void sslContextInit( SSLContext_t * pSslContext )
|
||||
{
|
||||
configASSERT( pSslContext != NULL );
|
||||
|
||||
mbedtls_ssl_config_init( &( pSslContext->config ) );
|
||||
mbedtls_x509_crt_init( &( pSslContext->rootCa ) );
|
||||
mbedtls_x509_crt_init( &( pSslContext->clientCert ) );
|
||||
mbedtls_ssl_init( &( pSslContext->context ) );
|
||||
|
||||
xInitializePkcs11Session( &( pSslContext->xP11Session ) );
|
||||
C_GetFunctionList( &( pSslContext->pxP11FunctionList ) );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void sslContextFree( SSLContext_t * pSslContext )
|
||||
{
|
||||
configASSERT( pSslContext != NULL );
|
||||
|
||||
mbedtls_ssl_free( &( pSslContext->context ) );
|
||||
mbedtls_x509_crt_free( &( pSslContext->rootCa ) );
|
||||
mbedtls_x509_crt_free( &( pSslContext->clientCert ) );
|
||||
mbedtls_ssl_config_free( &( pSslContext->config ) );
|
||||
|
||||
pSslContext->pxP11FunctionList->C_CloseSession( pSslContext->xP11Session );
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
const NetworkCredentials_t * pNetworkCredentials )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
int32_t mbedtlsError = 0;
|
||||
CK_RV xResult = CKR_OK;
|
||||
|
||||
configASSERT( pNetworkContext != NULL );
|
||||
configASSERT( pHostName != NULL );
|
||||
configASSERT( pNetworkCredentials != NULL );
|
||||
configASSERT( pNetworkCredentials->pRootCa != NULL );
|
||||
|
||||
/* Initialize the mbed TLS context structures. */
|
||||
sslContextInit( &( pNetworkContext->sslContext ) );
|
||||
|
||||
mbedtlsError = mbedtls_ssl_config_defaults( &( pNetworkContext->sslContext.config ),
|
||||
MBEDTLS_SSL_IS_CLIENT,
|
||||
MBEDTLS_SSL_TRANSPORT_STREAM,
|
||||
MBEDTLS_SSL_PRESET_DEFAULT );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set default SSL configuration: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
/* Per mbed TLS docs, mbedtls_ssl_config_defaults only fails on memory allocation. */
|
||||
returnStatus = TLS_TRANSPORT_INSUFFICIENT_MEMORY;
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Set up the certificate security profile, starting from the default value. */
|
||||
pNetworkContext->sslContext.certProfile = mbedtls_x509_crt_profile_default;
|
||||
|
||||
/* test.mosquitto.org only provides a 1024-bit RSA certificate, which is
|
||||
* not acceptable by the default mbed TLS certificate security profile.
|
||||
* For the purposes of this demo, allow the use of 1024-bit RSA certificates.
|
||||
* This block should be removed otherwise. */
|
||||
if( strncmp( pHostName, "test.mosquitto.org", strlen( pHostName ) ) == 0 )
|
||||
{
|
||||
pNetworkContext->sslContext.certProfile.rsa_min_bitlen = 1024;
|
||||
}
|
||||
|
||||
/* Set SSL authmode and the RNG context. */
|
||||
mbedtls_ssl_conf_authmode( &( pNetworkContext->sslContext.config ),
|
||||
MBEDTLS_SSL_VERIFY_REQUIRED );
|
||||
mbedtls_ssl_conf_rng( &( pNetworkContext->sslContext.config ),
|
||||
generateRandomBytes,
|
||||
&pNetworkContext->sslContext );
|
||||
mbedtls_ssl_conf_cert_profile( &( pNetworkContext->sslContext.config ),
|
||||
&( pNetworkContext->sslContext.certProfile ) );
|
||||
|
||||
/* Parse the server root CA certificate into the SSL context. */
|
||||
mbedtlsError = mbedtls_x509_crt_parse( &( pNetworkContext->sslContext.rootCa ),
|
||||
pNetworkCredentials->pRootCa,
|
||||
pNetworkCredentials->rootCaSize );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to parse server root CA certificate: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
|
||||
}
|
||||
else
|
||||
{
|
||||
mbedtls_ssl_conf_ca_chain( &( pNetworkContext->sslContext.config ),
|
||||
&( pNetworkContext->sslContext.rootCa ),
|
||||
NULL );
|
||||
}
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Setup the client private key. */
|
||||
xResult = initializeClientKeys( &( pNetworkContext->sslContext ) );
|
||||
|
||||
if( xResult != CKR_OK )
|
||||
{
|
||||
LogError( ( "Failed to setup key handling by PKCS #11." ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Setup the client certificate. */
|
||||
xResult = readCertificateIntoContext( &( pNetworkContext->sslContext ),
|
||||
pkcs11configLABEL_DEVICE_CERTIFICATE_FOR_TLS,
|
||||
CKO_CERTIFICATE,
|
||||
&( pNetworkContext->sslContext.clientCert ) );
|
||||
|
||||
if( xResult != CKR_OK )
|
||||
{
|
||||
LogError( ( "Failed to get certificate from PKCS #11 module." ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
|
||||
}
|
||||
else
|
||||
{
|
||||
( void ) mbedtls_ssl_conf_own_cert( &( pNetworkContext->sslContext.config ),
|
||||
&( pNetworkContext->sslContext.clientCert ),
|
||||
&( pNetworkContext->sslContext.privKey ) );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if( ( returnStatus == TLS_TRANSPORT_SUCCESS ) && ( pNetworkCredentials->pAlpnProtos != NULL ) )
|
||||
{
|
||||
/* Include an application protocol list in the TLS ClientHello
|
||||
* message. */
|
||||
mbedtlsError = mbedtls_ssl_conf_alpn_protocols( &( pNetworkContext->sslContext.config ),
|
||||
pNetworkCredentials->pAlpnProtos );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to configure ALPN protocol in mbed TLS: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Initialize the mbed TLS secured connection context. */
|
||||
mbedtlsError = mbedtls_ssl_setup( &( pNetworkContext->sslContext.context ),
|
||||
&( pNetworkContext->sslContext.config ) );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set up mbed TLS SSL context: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set the underlying IO for the TLS connection. */
|
||||
|
||||
/* MISRA Rule 11.2 flags the following line for casting the second
|
||||
* parameter to void *. This rule is suppressed because
|
||||
* #mbedtls_ssl_set_bio requires the second parameter as void *.
|
||||
*/
|
||||
/* coverity[misra_c_2012_rule_11_2_violation] */
|
||||
mbedtls_ssl_set_bio( &( pNetworkContext->sslContext.context ),
|
||||
( void * ) pNetworkContext->tcpSocket,
|
||||
mbedtls_platform_send,
|
||||
mbedtls_platform_recv,
|
||||
NULL );
|
||||
}
|
||||
}
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Enable SNI if requested. */
|
||||
if( pNetworkCredentials->disableSni == pdFALSE )
|
||||
{
|
||||
mbedtlsError = mbedtls_ssl_set_hostname( &( pNetworkContext->sslContext.context ),
|
||||
pHostName );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to set server name: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Set Maximum Fragment Length if enabled. */
|
||||
#ifdef MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Enable the max fragment extension. 4096 bytes is currently the largest fragment size permitted.
|
||||
* See RFC 8449 https://tools.ietf.org/html/rfc8449 for more information.
|
||||
*
|
||||
* Smaller values can be found in "mbedtls/include/ssl.h".
|
||||
*/
|
||||
mbedtlsError = mbedtls_ssl_conf_max_frag_len( &( pNetworkContext->sslContext.config ), MBEDTLS_SSL_MAX_FRAG_LEN_4096 );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to maximum fragment length extension: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
|
||||
}
|
||||
}
|
||||
#endif /* ifdef MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
/* Perform the TLS handshake. */
|
||||
do
|
||||
{
|
||||
mbedtlsError = mbedtls_ssl_handshake( &( pNetworkContext->sslContext.context ) );
|
||||
} while( ( mbedtlsError == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( mbedtlsError == MBEDTLS_ERR_SSL_WANT_WRITE ) );
|
||||
|
||||
if( mbedtlsError != 0 )
|
||||
{
|
||||
LogError( ( "Failed to perform TLS handshake: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( mbedtlsError ),
|
||||
mbedtlsLowLevelCodeOrDefault( mbedtlsError ) ) );
|
||||
|
||||
returnStatus = TLS_TRANSPORT_HANDSHAKE_FAILED;
|
||||
}
|
||||
}
|
||||
|
||||
if( returnStatus != TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
sslContextFree( &( pNetworkContext->sslContext ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) TLS handshake successful.",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static TlsTransportStatus_t initMbedtls( void )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
|
||||
/* Set the mutex functions for mbed TLS thread safety. */
|
||||
mbedtls_threading_set_alt( mbedtls_platform_mutex_init,
|
||||
mbedtls_platform_mutex_free,
|
||||
mbedtls_platform_mutex_lock,
|
||||
mbedtls_platform_mutex_unlock );
|
||||
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
LogDebug( ( "Successfully initialized mbedTLS." ) );
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t generateRandomBytes( void * pvCtx,
|
||||
unsigned char * pucRandom,
|
||||
size_t xRandomLength )
|
||||
{
|
||||
/* Must cast from void pointer to conform to mbed TLS API. */
|
||||
SSLContext_t * pxCtx = ( SSLContext_t * ) pvCtx;
|
||||
CK_RV xResult;
|
||||
|
||||
xResult = pxCtx->pxP11FunctionList->C_GenerateRandom( pxCtx->xP11Session, pucRandom, xRandomLength );
|
||||
|
||||
if( xResult != CKR_OK )
|
||||
{
|
||||
LogError( ( "Failed to generate random bytes from the PKCS #11 module." ) );
|
||||
}
|
||||
|
||||
return xResult;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static CK_RV readCertificateIntoContext( SSLContext_t * pSslContext,
|
||||
char * pcLabelName,
|
||||
CK_OBJECT_CLASS xClass,
|
||||
mbedtls_x509_crt * pxCertificateContext )
|
||||
{
|
||||
CK_RV xResult = CKR_OK;
|
||||
CK_ATTRIBUTE xTemplate = { 0 };
|
||||
CK_OBJECT_HANDLE xCertObj = 0;
|
||||
|
||||
/* Get the handle of the certificate. */
|
||||
xResult = xFindObjectWithLabelAndClass( pSslContext->xP11Session,
|
||||
pcLabelName,
|
||||
xClass,
|
||||
&xCertObj );
|
||||
|
||||
if( ( CKR_OK == xResult ) && ( xCertObj == CK_INVALID_HANDLE ) )
|
||||
{
|
||||
xResult = CKR_OBJECT_HANDLE_INVALID;
|
||||
}
|
||||
|
||||
/* Query the certificate size. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xTemplate.type = CKA_VALUE;
|
||||
xTemplate.ulValueLen = 0;
|
||||
xTemplate.pValue = NULL;
|
||||
xResult = pSslContext->pxP11FunctionList->C_GetAttributeValue( pSslContext->xP11Session,
|
||||
xCertObj,
|
||||
&xTemplate,
|
||||
1 );
|
||||
}
|
||||
|
||||
/* Create a buffer for the certificate. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xTemplate.pValue = pvPortMalloc( xTemplate.ulValueLen );
|
||||
|
||||
if( NULL == xTemplate.pValue )
|
||||
{
|
||||
xResult = CKR_HOST_MEMORY;
|
||||
}
|
||||
}
|
||||
|
||||
/* Export the certificate. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xResult = pSslContext->pxP11FunctionList->C_GetAttributeValue( pSslContext->xP11Session,
|
||||
xCertObj,
|
||||
&xTemplate,
|
||||
1 );
|
||||
}
|
||||
|
||||
/* Decode the certificate. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xResult = mbedtls_x509_crt_parse( pxCertificateContext,
|
||||
( const unsigned char * ) xTemplate.pValue,
|
||||
xTemplate.ulValueLen );
|
||||
}
|
||||
|
||||
/* Free memory. */
|
||||
vPortFree( xTemplate.pValue );
|
||||
|
||||
return xResult;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/**
|
||||
* @brief Helper for setting up potentially hardware-based cryptographic context
|
||||
* for the client TLS certificate and private key.
|
||||
*
|
||||
* @param Caller context.
|
||||
*
|
||||
* @return Zero on success.
|
||||
*/
|
||||
static CK_RV initializeClientKeys( SSLContext_t * pxCtx )
|
||||
{
|
||||
CK_RV xResult = CKR_OK;
|
||||
CK_SLOT_ID * pxSlotIds = NULL;
|
||||
CK_ULONG xCount = 0;
|
||||
CK_ATTRIBUTE xTemplate[ 2 ];
|
||||
mbedtls_pk_type_t xKeyAlgo = ( mbedtls_pk_type_t ) ~0;
|
||||
|
||||
/* Get the PKCS #11 module/token slot count. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xResult = ( BaseType_t ) pxCtx->pxP11FunctionList->C_GetSlotList( CK_TRUE,
|
||||
NULL,
|
||||
&xCount );
|
||||
}
|
||||
|
||||
/* Allocate memory to store the token slots. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
pxSlotIds = ( CK_SLOT_ID * ) pvPortMalloc( sizeof( CK_SLOT_ID ) * xCount );
|
||||
|
||||
if( NULL == pxSlotIds )
|
||||
{
|
||||
xResult = CKR_HOST_MEMORY;
|
||||
}
|
||||
}
|
||||
|
||||
/* Get all of the available private key slot identities. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xResult = ( BaseType_t ) pxCtx->pxP11FunctionList->C_GetSlotList( CK_TRUE,
|
||||
pxSlotIds,
|
||||
&xCount );
|
||||
}
|
||||
|
||||
/* Put the module in authenticated mode. */
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
xResult = ( BaseType_t ) pxCtx->pxP11FunctionList->C_Login( pxCtx->xP11Session,
|
||||
CKU_USER,
|
||||
( CK_UTF8CHAR_PTR ) configPKCS11_DEFAULT_USER_PIN,
|
||||
sizeof( configPKCS11_DEFAULT_USER_PIN ) - 1 );
|
||||
}
|
||||
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
/* Get the handle of the device private key. */
|
||||
xResult = xFindObjectWithLabelAndClass( pxCtx->xP11Session,
|
||||
pkcs11configLABEL_DEVICE_PRIVATE_KEY_FOR_TLS,
|
||||
CKO_PRIVATE_KEY,
|
||||
&pxCtx->xP11PrivateKey );
|
||||
}
|
||||
|
||||
if( ( CKR_OK == xResult ) && ( pxCtx->xP11PrivateKey == CK_INVALID_HANDLE ) )
|
||||
{
|
||||
xResult = CK_INVALID_HANDLE;
|
||||
LogError( ( "Could not find private key." ) );
|
||||
}
|
||||
|
||||
/* Query the device private key type. */
|
||||
if( xResult == CKR_OK )
|
||||
{
|
||||
xTemplate[ 0 ].type = CKA_KEY_TYPE;
|
||||
xTemplate[ 0 ].pValue = &pxCtx->xKeyType;
|
||||
xTemplate[ 0 ].ulValueLen = sizeof( CK_KEY_TYPE );
|
||||
xResult = pxCtx->pxP11FunctionList->C_GetAttributeValue( pxCtx->xP11Session,
|
||||
pxCtx->xP11PrivateKey,
|
||||
xTemplate,
|
||||
1 );
|
||||
}
|
||||
|
||||
/* Map the PKCS #11 key type to an mbedTLS algorithm. */
|
||||
if( xResult == CKR_OK )
|
||||
{
|
||||
switch( pxCtx->xKeyType )
|
||||
{
|
||||
case CKK_RSA:
|
||||
xKeyAlgo = MBEDTLS_PK_RSA;
|
||||
break;
|
||||
|
||||
case CKK_EC:
|
||||
xKeyAlgo = MBEDTLS_PK_ECKEY;
|
||||
break;
|
||||
|
||||
default:
|
||||
xResult = CKR_ATTRIBUTE_VALUE_INVALID;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Map the mbedTLS algorithm to its internal metadata. */
|
||||
if( xResult == CKR_OK )
|
||||
{
|
||||
memcpy( &pxCtx->privKeyInfo, mbedtls_pk_info_from_type( xKeyAlgo ), sizeof( mbedtls_pk_info_t ) );
|
||||
|
||||
pxCtx->privKeyInfo.sign_func = privateKeySigningCallback;
|
||||
pxCtx->privKey.pk_info = &pxCtx->privKeyInfo;
|
||||
pxCtx->privKey.pk_ctx = pxCtx;
|
||||
}
|
||||
|
||||
/* Free memory. */
|
||||
vPortFree( pxSlotIds );
|
||||
|
||||
return xResult;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static int32_t privateKeySigningCallback( void * pvContext,
|
||||
mbedtls_md_type_t xMdAlg,
|
||||
const unsigned char * pucHash,
|
||||
size_t xHashLen,
|
||||
unsigned char * pucSig,
|
||||
size_t * pxSigLen,
|
||||
int32_t ( * piRng )( void *,
|
||||
unsigned char *,
|
||||
size_t ),
|
||||
void * pvRng )
|
||||
{
|
||||
CK_RV xResult = CKR_OK;
|
||||
int32_t lFinalResult = 0;
|
||||
SSLContext_t * pxTLSContext = ( SSLContext_t * ) pvContext;
|
||||
CK_MECHANISM xMech = { 0 };
|
||||
CK_BYTE xToBeSigned[ 256 ];
|
||||
CK_ULONG xToBeSignedLen = sizeof( xToBeSigned );
|
||||
|
||||
/* Unreferenced parameters. */
|
||||
( void ) ( piRng );
|
||||
( void ) ( pvRng );
|
||||
( void ) ( xMdAlg );
|
||||
|
||||
/* Sanity check buffer length. */
|
||||
if( xHashLen > sizeof( xToBeSigned ) )
|
||||
{
|
||||
xResult = CKR_ARGUMENTS_BAD;
|
||||
}
|
||||
|
||||
/* Format the hash data to be signed. */
|
||||
if( CKK_RSA == pxTLSContext->xKeyType )
|
||||
{
|
||||
xMech.mechanism = CKM_RSA_PKCS;
|
||||
|
||||
/* mbedTLS expects hashed data without padding, but PKCS #11 C_Sign function performs a hash
|
||||
* & sign if hash algorithm is specified. This helper function applies padding
|
||||
* indicating data was hashed with SHA-256 while still allowing pre-hashed data to
|
||||
* be provided. */
|
||||
xResult = vAppendSHA256AlgorithmIdentifierSequence( ( uint8_t * ) pucHash, xToBeSigned );
|
||||
xToBeSignedLen = pkcs11RSA_SIGNATURE_INPUT_LENGTH;
|
||||
}
|
||||
else if( CKK_EC == pxTLSContext->xKeyType )
|
||||
{
|
||||
xMech.mechanism = CKM_ECDSA;
|
||||
memcpy( xToBeSigned, pucHash, xHashLen );
|
||||
xToBeSignedLen = xHashLen;
|
||||
}
|
||||
else
|
||||
{
|
||||
xResult = CKR_ARGUMENTS_BAD;
|
||||
}
|
||||
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
/* Use the PKCS#11 module to sign. */
|
||||
xResult = pxTLSContext->pxP11FunctionList->C_SignInit( pxTLSContext->xP11Session,
|
||||
&xMech,
|
||||
pxTLSContext->xP11PrivateKey );
|
||||
}
|
||||
|
||||
if( CKR_OK == xResult )
|
||||
{
|
||||
*pxSigLen = sizeof( xToBeSigned );
|
||||
xResult = pxTLSContext->pxP11FunctionList->C_Sign( ( CK_SESSION_HANDLE ) pxTLSContext->xP11Session,
|
||||
xToBeSigned,
|
||||
xToBeSignedLen,
|
||||
pucSig,
|
||||
( CK_ULONG_PTR ) pxSigLen );
|
||||
}
|
||||
|
||||
if( ( xResult == CKR_OK ) && ( CKK_EC == pxTLSContext->xKeyType ) )
|
||||
{
|
||||
/* PKCS #11 for P256 returns a 64-byte signature with 32 bytes for R and 32 bytes for S.
|
||||
* This must be converted to an ASN.1 encoded array. */
|
||||
if( *pxSigLen != pkcs11ECDSA_P256_SIGNATURE_LENGTH )
|
||||
{
|
||||
xResult = CKR_FUNCTION_FAILED;
|
||||
}
|
||||
|
||||
if( xResult == CKR_OK )
|
||||
{
|
||||
PKI_pkcs11SignatureTombedTLSSignature( pucSig, pxSigLen );
|
||||
}
|
||||
}
|
||||
|
||||
if( xResult != CKR_OK )
|
||||
{
|
||||
LogError( ( "Failed to sign message using PKCS #11 with error code %02X.", xResult ) );
|
||||
}
|
||||
|
||||
return lFinalResult;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
const NetworkCredentials_t * pNetworkCredentials,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs )
|
||||
{
|
||||
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
|
||||
BaseType_t socketStatus = 0;
|
||||
|
||||
if( ( pNetworkContext == NULL ) ||
|
||||
( pHostName == NULL ) ||
|
||||
( pNetworkCredentials == NULL ) )
|
||||
{
|
||||
LogError( ( "Invalid input parameter(s): Arguments cannot be NULL. pNetworkContext=%p, "
|
||||
"pHostName=%p, pNetworkCredentials=%p.",
|
||||
pNetworkContext,
|
||||
pHostName,
|
||||
pNetworkCredentials ) );
|
||||
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else if( ( pNetworkCredentials->pRootCa == NULL ) )
|
||||
{
|
||||
LogError( ( "pRootCa cannot be NULL." ) );
|
||||
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else for MISRA 15.7 compliance. */
|
||||
}
|
||||
|
||||
/* Establish a TCP connection with the server. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
socketStatus = Sockets_Connect( &( pNetworkContext->tcpSocket ),
|
||||
pHostName,
|
||||
port,
|
||||
receiveTimeoutMs,
|
||||
sendTimeoutMs );
|
||||
|
||||
if( socketStatus != 0 )
|
||||
{
|
||||
LogError( ( "Failed to connect to %s with error %d.",
|
||||
pHostName,
|
||||
socketStatus ) );
|
||||
returnStatus = TLS_TRANSPORT_CONNECT_FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize mbedtls. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
returnStatus = initMbedtls();
|
||||
}
|
||||
|
||||
/* Perform TLS handshake. */
|
||||
if( returnStatus == TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
returnStatus = tlsSetup( pNetworkContext, pHostName, pNetworkCredentials );
|
||||
}
|
||||
|
||||
/* Clean up on failure. */
|
||||
if( returnStatus != TLS_TRANSPORT_SUCCESS )
|
||||
{
|
||||
if( ( pNetworkContext != NULL ) &&
|
||||
( pNetworkContext->tcpSocket != FREERTOS_INVALID_SOCKET ) )
|
||||
{
|
||||
( void ) FreeRTOS_closesocket( pNetworkContext->tcpSocket );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) Connection to %s established.",
|
||||
pNetworkContext,
|
||||
pHostName ) );
|
||||
}
|
||||
|
||||
return returnStatus;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext )
|
||||
{
|
||||
BaseType_t tlsStatus = 0;
|
||||
|
||||
if( pNetworkContext != NULL )
|
||||
{
|
||||
/* Attempting to terminate TLS connection. */
|
||||
tlsStatus = ( BaseType_t ) mbedtls_ssl_close_notify( &( pNetworkContext->sslContext.context ) );
|
||||
|
||||
/* Ignore the WANT_READ and WANT_WRITE return values. */
|
||||
if( ( tlsStatus != ( BaseType_t ) MBEDTLS_ERR_SSL_WANT_READ ) &&
|
||||
( tlsStatus != ( BaseType_t ) MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
if( tlsStatus == 0 )
|
||||
{
|
||||
LogInfo( ( "(Network connection %p) TLS close-notify sent.",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
LogError( ( "(Network connection %p) Failed to send TLS close-notify: mbedTLSError= %s : %s.",
|
||||
pNetworkContext,
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* WANT_READ and WANT_WRITE can be ignored. Logging for debugging purposes. */
|
||||
LogInfo( ( "(Network connection %p) TLS close-notify sent; ",
|
||||
"received %s as the TLS status can be ignored for close-notify."
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ? "WANT_READ" : "WANT_WRITE",
|
||||
pNetworkContext ) );
|
||||
}
|
||||
|
||||
/* Call socket shutdown function to close connection. */
|
||||
Sockets_Disconnect( pNetworkContext->tcpSocket );
|
||||
|
||||
/* Free mbed TLS contexts. */
|
||||
sslContextFree( &( pNetworkContext->sslContext ) );
|
||||
}
|
||||
|
||||
/* Clear the mutex functions for mbed TLS thread safety. */
|
||||
mbedtls_threading_free_alt();
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv )
|
||||
{
|
||||
int32_t tlsStatus = 0;
|
||||
|
||||
tlsStatus = ( int32_t ) mbedtls_ssl_read( &( pNetworkContext->sslContext.context ),
|
||||
pBuffer,
|
||||
bytesToRecv );
|
||||
|
||||
if( ( tlsStatus == MBEDTLS_ERR_SSL_TIMEOUT ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
LogDebug( ( "Failed to read data. However, a read can be retried on this error. "
|
||||
"mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
|
||||
/* Mark these set of errors as a timeout. The libraries may retry read
|
||||
* on these errors. */
|
||||
tlsStatus = 0;
|
||||
}
|
||||
else if( tlsStatus < 0 )
|
||||
{
|
||||
LogError( ( "Failed to read data: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else marker. */
|
||||
}
|
||||
|
||||
return tlsStatus;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend )
|
||||
{
|
||||
int32_t tlsStatus = 0;
|
||||
|
||||
tlsStatus = ( int32_t ) mbedtls_ssl_write( &( pNetworkContext->sslContext.context ),
|
||||
pBuffer,
|
||||
bytesToSend );
|
||||
|
||||
if( ( tlsStatus == MBEDTLS_ERR_SSL_TIMEOUT ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ||
|
||||
( tlsStatus == MBEDTLS_ERR_SSL_WANT_WRITE ) )
|
||||
{
|
||||
LogDebug( ( "Failed to send data. However, send can be retried on this error. "
|
||||
"mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
|
||||
/* Mark these set of errors as a timeout. The libraries may retry send
|
||||
* on these errors. */
|
||||
tlsStatus = 0;
|
||||
}
|
||||
else if( tlsStatus < 0 )
|
||||
{
|
||||
LogError( ( "Failed to send data: mbedTLSError= %s : %s.",
|
||||
mbedtlsHighLevelCodeOrDefault( tlsStatus ),
|
||||
mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Empty else marker. */
|
||||
}
|
||||
|
||||
return tlsStatus;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,212 @@
|
|||
/*
|
||||
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file tls_freertos_pkcs11.h
|
||||
* @brief TLS transport interface header.
|
||||
* @note This file is derived from the tls_freertos.h header file found in the mqtt
|
||||
* section of IoT Libraries source code. The file has been modified to support using
|
||||
* PKCS #11 when using TLS.
|
||||
*/
|
||||
|
||||
#ifndef USING_MBEDTLS_PKCS11
|
||||
#define USING_MBEDTLS_PKCS11
|
||||
|
||||
/**************************************************/
|
||||
/******* DO NOT CHANGE the following order ********/
|
||||
/**************************************************/
|
||||
|
||||
/* Logging related header files are required to be included in the following order:
|
||||
* 1. Include the header file "logging_levels.h".
|
||||
* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
|
||||
* 3. Include the header file "logging_stack.h".
|
||||
*/
|
||||
|
||||
/* Include header that defines log levels. */
|
||||
#include "logging_levels.h"
|
||||
|
||||
/* Logging configuration for the Sockets. */
|
||||
#ifndef LIBRARY_LOG_NAME
|
||||
#define LIBRARY_LOG_NAME "PkcsTlsTransport"
|
||||
#endif
|
||||
#ifndef LIBRARY_LOG_LEVEL
|
||||
#define LIBRARY_LOG_LEVEL LOG_ERROR
|
||||
#endif
|
||||
|
||||
#include "logging_stack.h"
|
||||
|
||||
/************ End of logging configuration ****************/
|
||||
|
||||
/* FreeRTOS+TCP include. */
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
|
||||
/* Transport interface include. */
|
||||
#include "transport_interface.h"
|
||||
|
||||
/* mbed TLS includes. */
|
||||
#include "mbedtls/ctr_drbg.h"
|
||||
#include "mbedtls/entropy.h"
|
||||
#include "mbedtls/ssl.h"
|
||||
#include "mbedtls/threading.h"
|
||||
#include "mbedtls/x509.h"
|
||||
#include "mbedtls/pk.h"
|
||||
#include "mbedtls/pk_internal.h"
|
||||
|
||||
/* PKCS #11 includes. */
|
||||
#include "core_pkcs11.h"
|
||||
|
||||
/**
|
||||
* @brief Secured connection context.
|
||||
*/
|
||||
typedef struct SSLContext
|
||||
{
|
||||
mbedtls_ssl_config config; /**< @brief SSL connection configuration. */
|
||||
mbedtls_ssl_context context; /**< @brief SSL connection context */
|
||||
mbedtls_x509_crt_profile certProfile; /**< @brief Certificate security profile for this connection. */
|
||||
mbedtls_x509_crt rootCa; /**< @brief Root CA certificate context. */
|
||||
mbedtls_x509_crt clientCert; /**< @brief Client certificate context. */
|
||||
mbedtls_pk_context privKey; /**< @brief Client private key context. */
|
||||
mbedtls_pk_info_t privKeyInfo; /**< @brief Client private key info. */
|
||||
|
||||
/* PKCS#11. */
|
||||
CK_FUNCTION_LIST_PTR pxP11FunctionList;
|
||||
CK_SESSION_HANDLE xP11Session;
|
||||
CK_OBJECT_HANDLE xP11PrivateKey;
|
||||
CK_KEY_TYPE xKeyType;
|
||||
} SSLContext_t;
|
||||
|
||||
/**
|
||||
* @brief Definition of the network context for the transport interface
|
||||
* implementation that uses mbedTLS and FreeRTOS+TLS sockets.
|
||||
*/
|
||||
struct NetworkContext
|
||||
{
|
||||
Socket_t tcpSocket;
|
||||
SSLContext_t sslContext;
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Contains the credentials necessary for tls connection setup.
|
||||
*/
|
||||
typedef struct NetworkCredentials
|
||||
{
|
||||
/**
|
||||
* @brief To use ALPN, set this to a NULL-terminated list of supported
|
||||
* protocols in decreasing order of preference.
|
||||
*
|
||||
* See [this link]
|
||||
* (https://aws.amazon.com/blogs/iot/mqtt-with-tls-client-authentication-on-port-443-why-it-is-useful-and-how-it-works/)
|
||||
* for more information.
|
||||
*/
|
||||
const char ** pAlpnProtos;
|
||||
|
||||
/**
|
||||
* @brief Disable server name indication (SNI) for a TLS session.
|
||||
*/
|
||||
BaseType_t disableSni;
|
||||
|
||||
const unsigned char * pRootCa; /**< @brief String representing a trusted server root certificate. */
|
||||
size_t rootCaSize; /**< @brief Size associated with #NetworkCredentials.pRootCa. */
|
||||
const unsigned char * pUserName; /**< @brief String representing the username for MQTT. */
|
||||
size_t userNameSize; /**< @brief Size associated with #NetworkCredentials.pUserName. */
|
||||
const unsigned char * pPassword; /**< @brief String representing the password for MQTT. */
|
||||
size_t passwordSize; /**< @brief Size associated with #NetworkCredentials.pPassword. */
|
||||
} NetworkCredentials_t;
|
||||
|
||||
/**
|
||||
* @brief TLS Connect / Disconnect return status.
|
||||
*/
|
||||
typedef enum TlsTransportStatus
|
||||
{
|
||||
TLS_TRANSPORT_SUCCESS = 0, /**< Function successfully completed. */
|
||||
TLS_TRANSPORT_INVALID_PARAMETER, /**< At least one parameter was invalid. */
|
||||
TLS_TRANSPORT_INSUFFICIENT_MEMORY, /**< Insufficient memory required to establish connection. */
|
||||
TLS_TRANSPORT_INVALID_CREDENTIALS, /**< Provided credentials were invalid. */
|
||||
TLS_TRANSPORT_HANDSHAKE_FAILED, /**< Performing TLS handshake with server failed. */
|
||||
TLS_TRANSPORT_INTERNAL_ERROR, /**< A call to a system API resulted in an internal error. */
|
||||
TLS_TRANSPORT_CONNECT_FAILURE /**< Initial connection to the server failed. */
|
||||
} TlsTransportStatus_t;
|
||||
|
||||
/**
|
||||
* @brief Create a TLS connection with FreeRTOS sockets.
|
||||
*
|
||||
* @param[out] pNetworkContext Pointer to a network context to contain the
|
||||
* initialized socket handle.
|
||||
* @param[in] pHostName The hostname of the remote endpoint.
|
||||
* @param[in] port The destination port.
|
||||
* @param[in] pNetworkCredentials Credentials for the TLS connection.
|
||||
* @param[in] receiveTimeoutMs Receive socket timeout.
|
||||
* @param[in] sendTimeoutMs Send socket timeout.
|
||||
*
|
||||
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
|
||||
* #TLS_TRANSPORT_HANDSHAKE_FAILED, #TLS_TRANSPORT_INTERNAL_ERROR, or #TLS_TRANSPORT_CONNECT_FAILURE.
|
||||
*/
|
||||
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
const NetworkCredentials_t * pNetworkCredentials,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs );
|
||||
|
||||
/**
|
||||
* @brief Gracefully disconnect an established TLS connection.
|
||||
*
|
||||
* @param[in] pNetworkContext Network context.
|
||||
*/
|
||||
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext );
|
||||
|
||||
/**
|
||||
* @brief Receives data from an established TLS connection.
|
||||
*
|
||||
* This is the TLS version of the transport interface's
|
||||
* #TransportRecv_t function.
|
||||
*
|
||||
* @param[in] pNetworkContext The Network context.
|
||||
* @param[out] pBuffer Buffer to receive bytes into.
|
||||
* @param[in] bytesToRecv Number of bytes to receive from the network.
|
||||
*
|
||||
* @return Number of bytes (> 0) received if successful;
|
||||
* 0 if the socket times out without reading any bytes;
|
||||
* negative value on error.
|
||||
*/
|
||||
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv );
|
||||
|
||||
/**
|
||||
* @brief Sends data over an established TLS connection.
|
||||
*
|
||||
* This is the TLS version of the transport interface's
|
||||
* #TransportSend_t function.
|
||||
*
|
||||
* @param[in] pNetworkContext The network context.
|
||||
* @param[in] pBuffer Buffer containing the bytes to send.
|
||||
* @param[in] bytesToSend Number of bytes to send from the buffer.
|
||||
*
|
||||
* @return Number of bytes (> 0) sent on success;
|
||||
* 0 if the socket times out without sending any bytes;
|
||||
* else a negative value to represent error.
|
||||
*/
|
||||
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend );
|
||||
|
||||
#endif /* ifndef USING_MBEDTLS_PKCS11 */
|
||||
|
|
@ -0,0 +1,120 @@
|
|||
/*
|
||||
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
/* Standard includes. */
|
||||
#include <string.h>
|
||||
|
||||
/* FreeRTOS includes. */
|
||||
#include "FreeRTOS.h"
|
||||
|
||||
/* FreeRTOS+TCP includes. */
|
||||
#include "FreeRTOS_IP.h"
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
|
||||
/* FreeRTOS Socket wrapper include. */
|
||||
#include "sockets_wrapper.h"
|
||||
|
||||
/* Transport interface include. */
|
||||
#include "using_plaintext.h"
|
||||
|
||||
PlaintextTransportStatus_t Plaintext_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs )
|
||||
{
|
||||
PlaintextTransportStatus_t plaintextStatus = PLAINTEXT_TRANSPORT_SUCCESS;
|
||||
BaseType_t socketStatus = 0;
|
||||
|
||||
if( ( pNetworkContext == NULL ) || ( pHostName == NULL ) )
|
||||
{
|
||||
LogError( ( "Invalid input parameter(s): Arguments cannot be NULL. pNetworkContext=%p, "
|
||||
"pHostName=%p.",
|
||||
pNetworkContext,
|
||||
pHostName ) );
|
||||
plaintextStatus = PLAINTEXT_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Establish a TCP connection with the server. */
|
||||
socketStatus = Sockets_Connect( &( pNetworkContext->tcpSocket ),
|
||||
pHostName,
|
||||
port,
|
||||
receiveTimeoutMs,
|
||||
sendTimeoutMs );
|
||||
|
||||
/* A non zero status is an error. */
|
||||
if( socketStatus != 0 )
|
||||
{
|
||||
LogError( ( "Failed to connect to %s with error %d.",
|
||||
pHostName,
|
||||
socketStatus ) );
|
||||
plaintextStatus = PLAINTEXT_TRANSPORT_CONNECT_FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
return plaintextStatus;
|
||||
}
|
||||
|
||||
PlaintextTransportStatus_t Plaintext_FreeRTOS_Disconnect( const NetworkContext_t * pNetworkContext )
|
||||
{
|
||||
PlaintextTransportStatus_t plaintextStatus = PLAINTEXT_TRANSPORT_SUCCESS;
|
||||
|
||||
if( pNetworkContext == NULL )
|
||||
{
|
||||
LogError( ( "pNetworkContext cannot be NULL." ) );
|
||||
plaintextStatus = PLAINTEXT_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else if( pNetworkContext->tcpSocket == FREERTOS_INVALID_SOCKET )
|
||||
{
|
||||
LogError( ( "pNetworkContext->tcpSocket cannot be an invalid socket." ) );
|
||||
plaintextStatus = PLAINTEXT_TRANSPORT_INVALID_PARAMETER;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Call socket disconnect function to close connection. */
|
||||
Sockets_Disconnect( pNetworkContext->tcpSocket );
|
||||
}
|
||||
|
||||
return plaintextStatus;
|
||||
}
|
||||
|
||||
int32_t Plaintext_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv )
|
||||
{
|
||||
int32_t socketStatus = 0;
|
||||
|
||||
socketStatus = FreeRTOS_recv( pNetworkContext->tcpSocket, pBuffer, bytesToRecv, 0 );
|
||||
|
||||
return socketStatus;
|
||||
}
|
||||
|
||||
int32_t Plaintext_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend )
|
||||
{
|
||||
int32_t socketStatus = 0;
|
||||
|
||||
socketStatus = FreeRTOS_send( pNetworkContext->tcpSocket, pBuffer, bytesToSend, 0 );
|
||||
|
||||
return socketStatus;
|
||||
}
|
||||
|
|
@ -0,0 +1,130 @@
|
|||
/*
|
||||
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef USING_PLAINTEXT_H
|
||||
#define USING_PLAINTEXT_H
|
||||
|
||||
/**************************************************/
|
||||
/******* DO NOT CHANGE the following order ********/
|
||||
/**************************************************/
|
||||
|
||||
/* Logging related header files are required to be included in the following order:
|
||||
* 1. Include the header file "logging_levels.h".
|
||||
* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
|
||||
* 3. Include the header file "logging_stack.h".
|
||||
*/
|
||||
|
||||
/* Include header that defines log levels. */
|
||||
#include "logging_levels.h"
|
||||
|
||||
/* Logging configuration for the Sockets. */
|
||||
#ifndef LIBRARY_LOG_NAME
|
||||
#define LIBRARY_LOG_NAME "PlaintextTransport"
|
||||
#endif
|
||||
#ifndef LIBRARY_LOG_LEVEL
|
||||
#define LIBRARY_LOG_LEVEL LOG_ERROR
|
||||
#endif
|
||||
|
||||
#include "logging_stack.h"
|
||||
|
||||
/************ End of logging configuration ****************/
|
||||
|
||||
/* FreeRTOS+TCP include. */
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
|
||||
/* Transport interface include. */
|
||||
#include "transport_interface.h"
|
||||
|
||||
/**
|
||||
* @brief Network context definition for FreeRTOS sockets.
|
||||
*/
|
||||
struct NetworkContext
|
||||
{
|
||||
Socket_t tcpSocket;
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Plain text transport Connect / Disconnect return status.
|
||||
*/
|
||||
typedef enum PlaintextTransportStatus
|
||||
{
|
||||
PLAINTEXT_TRANSPORT_SUCCESS = 1, /**< Function successfully completed. */
|
||||
PLAINTEXT_TRANSPORT_INVALID_PARAMETER = 2, /**< At least one parameter was invalid. */
|
||||
PLAINTEXT_TRANSPORT_CONNECT_FAILURE = 3 /**< Initial connection to the server failed. */
|
||||
} PlaintextTransportStatus_t;
|
||||
|
||||
/**
|
||||
* @brief Create a TCP connection with FreeRTOS sockets.
|
||||
*
|
||||
* @param[out] pNetworkContext Pointer to a network context to contain the
|
||||
* initialized socket handle.
|
||||
* @param[in] pHostName The hostname of the remote endpoint.
|
||||
* @param[in] port The destination port.
|
||||
* @param[in] receiveTimeoutMs Receive socket timeout.
|
||||
*
|
||||
* @return #PLAINTEXT_TRANSPORT_SUCCESS, #PLAINTEXT_TRANSPORT_INVALID_PARAMETER,
|
||||
* or #PLAINTEXT_TRANSPORT_CONNECT_FAILURE.
|
||||
*/
|
||||
PlaintextTransportStatus_t Plaintext_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
|
||||
const char * pHostName,
|
||||
uint16_t port,
|
||||
uint32_t receiveTimeoutMs,
|
||||
uint32_t sendTimeoutMs );
|
||||
|
||||
/**
|
||||
* @brief Gracefully disconnect an established TCP connection.
|
||||
*
|
||||
* @param[in] pNetworkContext Network context containing the TCP socket handle.
|
||||
*
|
||||
* @return #PLAINTEXT_TRANSPORT_SUCCESS, or #PLAINTEXT_TRANSPORT_INVALID_PARAMETER.
|
||||
*/
|
||||
PlaintextTransportStatus_t Plaintext_FreeRTOS_Disconnect( const NetworkContext_t * pNetworkContext );
|
||||
|
||||
/**
|
||||
* @brief Receives data from an established TCP connection.
|
||||
*
|
||||
* @param[in] pNetworkContext The network context containing the TCP socket
|
||||
* handle.
|
||||
* @param[out] pBuffer Buffer to receive bytes into.
|
||||
* @param[in] bytesToRecv Number of bytes to receive from the network.
|
||||
*
|
||||
* @return Number of bytes received if successful; 0 if the socket times out;
|
||||
* Negative value on error.
|
||||
*/
|
||||
int32_t Plaintext_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
|
||||
void * pBuffer,
|
||||
size_t bytesToRecv );
|
||||
|
||||
/**
|
||||
* @brief Sends data over an established TCP connection.
|
||||
*
|
||||
* @param[in] pNetworkContext The network context containing the TCP socket
|
||||
* handle.
|
||||
* @param[in] pBuffer Buffer containing the bytes to send.
|
||||
* @param[in] bytesToSend Number of bytes to send from the buffer.
|
||||
*
|
||||
* @return Number of bytes sent on success; else a negative value.
|
||||
*/
|
||||
int32_t Plaintext_FreeRTOS_send( NetworkContext_t * pNetworkContext,
|
||||
const void * pBuffer,
|
||||
size_t bytesToSend );
|
||||
|
||||
#endif /* ifndef USING_PLAINTEXT_H */
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
Building a network transport implementation:
|
||||
|
||||
1. Go into the sub directory for the TCP/IP stack you are using (e.g. freertos_plus_tcp).
|
||||
2. Build the wrapper file located in the directory (i.e. sockets_wrapper.c).
|
||||
3. Select an additional folder based on the TLS stack you are using (e.g. using_mbedtls), or the using_plaintext folder if not using TLS.
|
||||
4. Build and include all files from the selected folder.
|
||||
Loading…
Add table
Add a link
Reference in a new issue