/* | |
* FreeRTOS Kernel V10.1.1 | |
* Copyright (C) 2018 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. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/* Standard includes. */ | |
#include "stdlib.h" | |
#include "string.h" | |
/* lwIP core includes */ | |
#include "lwip/opt.h" | |
#include "lwip/sockets.h" | |
/* FreeRTOS includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
/* Utils includes. */ | |
#include "FreeRTOS_CLI.h" | |
/* Dimensions the buffer into which input characters are placed. */ | |
#define cmdMAX_INPUT_SIZE 100 | |
/* Dimensions the buffer into which string outputs can be placed. */ | |
#define cmdMAX_OUTPUT_SIZE 1024 | |
/*-----------------------------------------------------------*/ | |
void vBasicSocketsCommandInterpreterTask( void *pvParameters ) | |
{ | |
long lSocket, lClientFd, lBytes, lAddrLen = sizeof( struct sockaddr_in ), lInputIndex; | |
struct sockaddr_in sLocalAddr; | |
struct sockaddr_in client_addr; | |
const char *pcWelcomeMessage = "FreeRTOS command server - connection accepted.\r\nType Help to view a list of registered commands.\r\n\r\n>"; | |
char cInChar; | |
static char cInputString[ cmdMAX_INPUT_SIZE ], cOutputString[ cmdMAX_OUTPUT_SIZE ]; | |
portBASE_TYPE xReturned; | |
extern void vRegisterSampleCLICommands( void ); | |
( void ) pvParameters; | |
/* Register the standard CLI commands. */ | |
vRegisterSampleCLICommands(); | |
lSocket = lwip_socket(AF_INET, SOCK_STREAM, 0); | |
if( lSocket >= 0 ) | |
{ | |
memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr)); | |
sLocalAddr.sin_family = AF_INET; | |
sLocalAddr.sin_len = sizeof(sLocalAddr); | |
sLocalAddr.sin_addr.s_addr = htonl(INADDR_ANY); | |
sLocalAddr.sin_port = ntohs( ( ( unsigned short ) 23 ) ); | |
if( lwip_bind( lSocket, ( struct sockaddr *) &sLocalAddr, sizeof( sLocalAddr ) ) < 0 ) | |
{ | |
lwip_close( lSocket ); | |
vTaskDelete( NULL ); | |
} | |
if( lwip_listen( lSocket, 20 ) != 0 ) | |
{ | |
lwip_close( lSocket ); | |
vTaskDelete( NULL ); | |
} | |
for( ;; ) | |
{ | |
lClientFd = lwip_accept(lSocket, ( struct sockaddr * ) &client_addr, ( u32_t * ) &lAddrLen ); | |
if( lClientFd > 0L ) | |
{ | |
lwip_send( lClientFd, pcWelcomeMessage, strlen( ( const char * ) pcWelcomeMessage ), 0 ); | |
lInputIndex = 0; | |
memset( cInputString, 0x00, cmdMAX_INPUT_SIZE ); | |
do | |
{ | |
lBytes = lwip_recv( lClientFd, &cInChar, sizeof( cInChar ), 0 ); | |
if( lBytes > 0L ) | |
{ | |
if( cInChar == '\n' ) | |
{ | |
/* The input string has been terminated. Was the | |
input a quit command? */ | |
if( strcmp( "quit", ( const char * ) cInputString ) == 0 ) | |
{ | |
/* Set lBytes to 0 to close the connection. */ | |
lBytes = 0L; | |
} | |
else | |
{ | |
/* The input string was not a quit command. | |
Pass the string to the command interpreter. */ | |
do | |
{ | |
/* Get the next output string from the command interpreter. */ | |
xReturned = FreeRTOS_CLIProcessCommand( cInputString, cOutputString, cmdMAX_INPUT_SIZE ); | |
lwip_send( lClientFd, cOutputString, strlen( ( const char * ) cOutputString ), 0 ); | |
} while( xReturned != pdFALSE ); | |
/* All the strings generated by the input | |
command have been sent. Clear the input | |
string ready to receive the next command. */ | |
lInputIndex = 0; | |
memset( cInputString, 0x00, cmdMAX_INPUT_SIZE ); | |
lwip_send( lClientFd, "\r\n>", strlen( "\r\n>" ), 0 ); | |
} | |
} | |
else | |
{ | |
if( cInChar == '\r' ) | |
{ | |
/* Ignore the character. */ | |
} | |
else if( cInChar == '\b' ) | |
{ | |
/* Backspace was pressed. Erase the last | |
character in the string - if any. */ | |
if( lInputIndex > 0 ) | |
{ | |
lInputIndex--; | |
cInputString[ lInputIndex ] = '\0'; | |
} | |
} | |
else | |
{ | |
/* A character was entered. Add it to the string | |
entered so far. When a \n is entered the complete | |
string will be passed to the command interpreter. */ | |
if( lInputIndex < cmdMAX_INPUT_SIZE ) | |
{ | |
cInputString[ lInputIndex ] = cInChar; | |
lInputIndex++; | |
} | |
} | |
} | |
} | |
} while( lBytes > 0L ); | |
lwip_close( lClientFd ); | |
} | |
} | |
} | |
/* Will only get here if a listening socket could not be created. */ | |
vTaskDelete( NULL ); | |
} | |