/*This file has been prepared for Doxygen automatic documentation generation.*/ | |
/*! \file ********************************************************************* | |
* | |
* \brief Basic WEB Server for AVR32 UC3. | |
* | |
* - Compiler: GNU GCC for AVR32 | |
* - Supported devices: All AVR32 devices can be used. | |
* - AppNote: | |
* | |
* \author Atmel Corporation: http://www.atmel.com \n | |
* Support and FAQ: http://support.atmel.no/ | |
* | |
*****************************************************************************/ | |
/* Copyright (c) 2007, Atmel Corporation All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* | |
* 3. The name of ATMEL may not be used to endorse or promote products derived | |
* from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND | |
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, | |
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
/* | |
Implements a simplistic WEB server. Every time a connection is made and | |
data is received a dynamic page that shows the current FreeRTOS.org kernel | |
statistics is generated and returned. The connection is then closed. | |
This file was adapted from a FreeRTOS lwIP slip demo supplied by a third | |
party. | |
*/ | |
#if (HTTP_USED == 1) | |
/* Standard includes. */ | |
#include <stdio.h> | |
#include <string.h> | |
#include "conf_eth.h" | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "semphr.h" | |
#include "partest.h" | |
#include "serial.h" | |
/* Demo includes. */ | |
/* Demo app includes. */ | |
#include "portmacro.h" | |
/* lwIP includes. */ | |
#include "lwip/api.h" | |
#include "lwip/tcpip.h" | |
#include "lwip/memp.h" | |
#include "lwip/stats.h" | |
#include "netif/loopif.h" | |
/* ethernet includes */ | |
#include "ethernet.h" | |
/*! The size of the buffer in which the dynamic WEB page is created. */ | |
#define webMAX_PAGE_SIZE 512 | |
/*! Standard GET response. */ | |
#define webHTTP_OK "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n" | |
/*! The port on which we listen. */ | |
#define webHTTP_PORT ( 80 ) | |
/*! Delay on close error. */ | |
#define webSHORT_DELAY ( 10 ) | |
/*! Format of the dynamic page that is returned on each connection. */ | |
#define webHTML_START \ | |
"<html>\ | |
<head>\ | |
</head>\ | |
<BODY onLoad=\"window.setTimeout("location.href='index.html'",1000)\" bgcolor=\"#FFFFFF\" text=\"#2477E6\">\ | |
\r\nPage Hits = " | |
#define webHTML_END \ | |
"\r\n</pre>\ | |
\r\n</font></BODY>\ | |
</html>" | |
portCHAR cDynamicPage[ webMAX_PAGE_SIZE ]; | |
portCHAR cPageHits[ 11 ]; | |
/*! Function to process the current connection */ | |
static void prvweb_ParseHTMLRequest( struct netconn *pxNetCon ); | |
/*! \brief WEB server main task | |
* check for incoming connection and process it | |
* | |
* \param pvParameters Input. Not Used. | |
* | |
*/ | |
portTASK_FUNCTION( vBasicWEBServer, pvParameters ) | |
{ | |
struct netconn *pxHTTPListener, *pxNewConnection; | |
/* Create a new tcp connection handle */ | |
pxHTTPListener = netconn_new( NETCONN_TCP ); | |
netconn_bind(pxHTTPListener, NULL, webHTTP_PORT ); | |
netconn_listen( pxHTTPListener ); | |
/* Loop forever */ | |
for( ;; ) | |
{ | |
/* Wait for a first connection. */ | |
pxNewConnection = netconn_accept(pxHTTPListener); | |
vParTestSetLED(webCONN_LED, pdTRUE); | |
if(pxNewConnection != NULL) | |
{ | |
prvweb_ParseHTMLRequest(pxNewConnection); | |
}/* end if new connection */ | |
vParTestSetLED(webCONN_LED, pdFALSE); | |
} /* end infinite loop */ | |
} | |
/*! \brief parse the incoming request | |
* parse the HTML request and send file | |
* | |
* \param pxNetCon Input. The netconn to use to send and receive data. | |
* | |
*/ | |
static void prvweb_ParseHTMLRequest( struct netconn *pxNetCon ) | |
{ | |
struct netbuf *pxRxBuffer; | |
portCHAR *pcRxString; | |
unsigned portSHORT usLength; | |
static unsigned portLONG ulPageHits = 0; | |
/* We expect to immediately get data. */ | |
pxRxBuffer = netconn_recv( pxNetCon ); | |
if( pxRxBuffer != NULL ) | |
{ | |
/* Where is the data? */ | |
netbuf_data( pxRxBuffer, ( void * ) &pcRxString, &usLength ); | |
/* Is this a GET? We don't handle anything else. */ | |
if( !strncmp( pcRxString, "GET", 3 ) ) | |
{ | |
pcRxString = cDynamicPage; | |
/* Update the hit count. */ | |
ulPageHits++; | |
sprintf( cPageHits, "%d", (int)ulPageHits ); | |
/* Write out the HTTP OK header. */ | |
netconn_write( pxNetCon, webHTTP_OK, (u16_t) strlen( webHTTP_OK ), NETCONN_COPY ); | |
/* Generate the dynamic page... First the page header. */ | |
strcpy( cDynamicPage, webHTML_START ); | |
/* ... Then the hit count... */ | |
strcat( cDynamicPage, cPageHits ); | |
strcat( cDynamicPage, "<p><pre>Task State Priority Stack #<br>************************************************<br>" ); | |
/* ... Then the list of tasks and their status... */ | |
vTaskList( ( signed portCHAR * ) cDynamicPage + strlen( cDynamicPage ) ); | |
/* ... Finally the page footer. */ | |
strcat( cDynamicPage, webHTML_END ); | |
/* Write out the dynamically generated page. */ | |
netconn_write( pxNetCon, cDynamicPage, (u16_t) strlen( cDynamicPage ), NETCONN_COPY ); | |
} | |
netbuf_delete( pxRxBuffer ); | |
} | |
netconn_close( pxNetCon ); | |
netconn_delete( pxNetCon ); | |
} | |
#endif | |