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