FreeRTOS/Demo/lwIP_Demo_Rowley_ARM7/BasicWEB.c - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /*
     FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.

     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT
     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

     ***************************************************************************
      *                                                                       *
      *    FreeRTOS tutorial books are available in pdf and paperback.        *
      *    Complete, revised, and edited pdf reference manuals are also       *
      *    available.                                                         *
      *                                                                       *
      *    Purchasing FreeRTOS documentation will not only help you, by       *
      *    ensuring you get running as quickly as possible and with an        *
      *    in-depth knowledge of how to use FreeRTOS, it will also help       *
      *    the FreeRTOS project to continue with its mission of providing     *
      *    professional grade, cross platform, de facto standard solutions    *
      *    for microcontrollers - completely free of charge!                  *
      *                                                                       *
      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *
      *                                                                       *
      *    Thank you for using FreeRTOS, and thank you for your support!      *
      *                                                                       *
     ***************************************************************************


     This file is part of the FreeRTOS distribution.

     FreeRTOS is free software; you can redistribute it and/or modify it under
     the terms of the GNU General Public License (version 2) as published by the
     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.

     >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
     distribute a combined work that includes FreeRTOS without being obliged to
     provide the source code for proprietary components outside of the FreeRTOS
     kernel.

     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
     details. You should have received a copy of the GNU General Public License
     and the FreeRTOS license exception along with FreeRTOS; if not it can be
     viewed here: http://www.freertos.org/a00114.html and also obtained by
     writing to Real Time Engineers Ltd., contact details for whom are available
     on the FreeRTOS WEB site.

     1 tab == 4 spaces!

     ***************************************************************************
      *                                                                       *
      *    Having a problem?  Start by reading the FAQ "My application does   *
      *    not run, what could be wrong?"                                     *
      *                                                                       *
      *    http://www.FreeRTOS.org/FAQHelp.html                               *
      *                                                                       *
     ***************************************************************************


     http://www.FreeRTOS.org - Documentation, books, training, latest versions,
     license and Real Time Engineers Ltd. contact details.

     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
     including FreeRTOS+Trace - an indispensable productivity tool, and our new
     fully thread aware and reentrant UDP/IP stack.

     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
     Integrity Systems, who sell the code with commercial support,
     indemnification and middleware, under the OpenRTOS brand.

     http://www.SafeRTOS.com - High Integrity Systems also provide a safety
     engineered and independently SIL3 certified version for use in safety and
     mission critical applications that require provable dependability.
 */

 /*
 	Implements a simplistic WEB server.  Every time a connection is made and
 	data is received a dynamic page that shows the current TCP/IP 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.
 */

 /*
 	Changes from V3.2.2

 	+ Changed the page returned by the lwIP WEB server demo to display the
 	  task status table rather than the TCP/IP statistics.
 */


 /* Standard includes. */
 #include <stdio.h>
 #include <string.h>

 /* Scheduler includes. */
 #include "FreeRTOS.h"
 #include "task.h"
 #include "semphr.h"

 /* Demo includes. */
 #include "BasicWEB.h"
 #include "SAM7_EMAC.h"

 /* lwIP includes. */
 #include "lwip/api.h"
 #include "lwip/tcpip.h"
 #include "lwip/memp.h"
 #include "lwip/stats.h"
 #include "netif/loopif.h"

 /* The size of the buffer in which the dynamic WEB page is created. */
 #define webMAX_PAGE_SIZE	2048

 /* 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(&quot;location.href='index.html'&quot;,1000)\"bgcolor=\"#CCCCff\">\
 \r\nPage Hits = "

 #define webHTML_END \
 "\r\n</pre>\
 \r\n</BODY>\
 </html>"

 /*------------------------------------------------------------*/

 /*
  * Process an incoming connection on port 80.
  *
  * This simply checks to see if the incoming data contains a GET request, and
  * if so sends back a single dynamically created page.  The connection is then
  * closed.  A more complete implementation could create a task for each
  * connection.
  */
 static void vProcessConnection( struct netconn *pxNetCon );

 /*------------------------------------------------------------*/

 static void vProcessConnection( struct netconn *pxNetCon )
 {
 static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
 struct netbuf *pxRxBuffer;
 char *pcRxString;
 unsigned short usLength;
 static unsigned long 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, "%lu", 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 char * ) 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 );
 }
 /*------------------------------------------------------------*/

 void vlwIPInit( void )
 {
     /* Initialize lwIP and its interface layer. */
 	sys_init();
 	mem_init();
 	memp_init();
 	pbuf_init();
 	netif_init();
 	ip_init();
 	tcpip_init( NULL, NULL );
 }
 /*------------------------------------------------------------*/

 void vBasicWEBServer( void *pvParameters )
 {
 struct netconn *pxHTTPListener, *pxNewConnection;
 struct ip_addr xIpAddr, xNetMast, xGateway;
 extern err_t ethernetif_init( struct netif *netif );
 static struct netif EMAC_if;

 	/* Parameters are not used - suppress compiler error. */
 	( void ) pvParameters;


 	/* Create and configure the EMAC interface. */
 	IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
 	IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
 	IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
 	netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);

 	/* make it the default interface */
     netif_set_default(&EMAC_if);

 	/* bring it up */
     netif_set_up(&EMAC_if);

 	/* 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 connection. */
 		pxNewConnection = netconn_accept(pxHTTPListener);

 		if(pxNewConnection != NULL)
 		{
 			/* Service connection. */
 			vProcessConnection( pxNewConnection );
 			while( netconn_delete( pxNewConnection ) != ERR_OK )
 			{
 				vTaskDelay( webSHORT_DELAY );
 			}
 		}
 	}
 }
	/*
	FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.

	FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
	http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

	***************************************************************************
	* *
	* FreeRTOS tutorial books are available in pdf and paperback. *
	* Complete, revised, and edited pdf reference manuals are also *
	* available. *
	* *
	* Purchasing FreeRTOS documentation will not only help you, by *
	* ensuring you get running as quickly as possible and with an *
	* in-depth knowledge of how to use FreeRTOS, it will also help *
	* the FreeRTOS project to continue with its mission of providing *
	* professional grade, cross platform, de facto standard solutions *
	* for microcontrollers - completely free of charge! *
	* *
	* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
	* *
	* Thank you for using FreeRTOS, and thank you for your support! *
	* *
	***************************************************************************


	This file is part of the FreeRTOS distribution.

	FreeRTOS is free software; you can redistribute it and/or modify it under
	the terms of the GNU General Public License (version 2) as published by the
	Free Software Foundation AND MODIFIED BY the FreeRTOS exception.

	>>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
	distribute a combined work that includes FreeRTOS without being obliged to
	provide the source code for proprietary components outside of the FreeRTOS
	kernel.

	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	details. You should have received a copy of the GNU General Public License
	and the FreeRTOS license exception along with FreeRTOS; if not it can be
	viewed here: http://www.freertos.org/a00114.html and also obtained by
	writing to Real Time Engineers Ltd., contact details for whom are available
	on the FreeRTOS WEB site.

	1 tab == 4 spaces!

	***************************************************************************
	* *
	* Having a problem? Start by reading the FAQ "My application does *
	* not run, what could be wrong?" *
	* *
	* http://www.FreeRTOS.org/FAQHelp.html *
	* *
	***************************************************************************


	http://www.FreeRTOS.org - Documentation, books, training, latest versions,
	license and Real Time Engineers Ltd. contact details.

	http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
	including FreeRTOS+Trace - an indispensable productivity tool, and our new
	fully thread aware and reentrant UDP/IP stack.

	http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
	Integrity Systems, who sell the code with commercial support,
	indemnification and middleware, under the OpenRTOS brand.

	http://www.SafeRTOS.com - High Integrity Systems also provide a safety
	engineered and independently SIL3 certified version for use in safety and
	mission critical applications that require provable dependability.
	*/

	/*
	Implements a simplistic WEB server. Every time a connection is made and
	data is received a dynamic page that shows the current TCP/IP 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.
	*/

	/*
	Changes from V3.2.2

	+ Changed the page returned by the lwIP WEB server demo to display the
	task status table rather than the TCP/IP statistics.
	*/


	/* Standard includes. */
	#include <stdio.h>
	#include <string.h>

	/* Scheduler includes. */
	#include "FreeRTOS.h"
	#include "task.h"
	#include "semphr.h"

	/* Demo includes. */
	#include "BasicWEB.h"
	#include "SAM7_EMAC.h"

	/* lwIP includes. */
	#include "lwip/api.h"
	#include "lwip/tcpip.h"
	#include "lwip/memp.h"
	#include "lwip/stats.h"
	#include "netif/loopif.h"

	/* The size of the buffer in which the dynamic WEB page is created. */
	#define webMAX_PAGE_SIZE 2048

	/* 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=\"#CCCCff\">\
	\r\nPage Hits = "

	#define webHTML_END \
	"\r\n</pre>\
	\r\n</BODY>\
	</html>"

	/------------------------------------------------------------/

	/*
	* Process an incoming connection on port 80.
	*
	* This simply checks to see if the incoming data contains a GET request, and
	* if so sends back a single dynamically created page. The connection is then
	* closed. A more complete implementation could create a task for each
	* connection.
	*/
	static void vProcessConnection( struct netconn *pxNetCon );

	/------------------------------------------------------------/

	static void vProcessConnection( struct netconn *pxNetCon )
	{
	static char cDynamicPage[ webMAX_PAGE_SIZE ], cPageHits[ 11 ];
	struct netbuf *pxRxBuffer;
	char *pcRxString;
	unsigned short usLength;
	static unsigned long 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, "%lu", 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 char * ) 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 );
	}
	/------------------------------------------------------------/

	void vlwIPInit( void )
	{
	/* Initialize lwIP and its interface layer. */
	sys_init();
	mem_init();
	memp_init();
	pbuf_init();
	netif_init();
	ip_init();
	tcpip_init( NULL, NULL );
	}
	/------------------------------------------------------------/

	void vBasicWEBServer( void *pvParameters )
	{
	struct netconn pxHTTPListener, pxNewConnection;
	struct ip_addr xIpAddr, xNetMast, xGateway;
	extern err_t ethernetif_init( struct netif *netif );
	static struct netif EMAC_if;

	/* Parameters are not used - suppress compiler error. */
	( void ) pvParameters;


	/* Create and configure the EMAC interface. */
	IP4_ADDR(&xIpAddr,emacIPADDR0,emacIPADDR1,emacIPADDR2,emacIPADDR3);
	IP4_ADDR(&xNetMast,emacNET_MASK0,emacNET_MASK1,emacNET_MASK2,emacNET_MASK3);
	IP4_ADDR(&xGateway,emacGATEWAY_ADDR0,emacGATEWAY_ADDR1,emacGATEWAY_ADDR2,emacGATEWAY_ADDR3);
	netif_add(&EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input);

	/* make it the default interface */
	netif_set_default(&EMAC_if);

	/* bring it up */
	netif_set_up(&EMAC_if);

	/* 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 connection. */
	pxNewConnection = netconn_accept(pxHTTPListener);

	if(pxNewConnection != NULL)
	{
	/* Service connection. */
	vProcessConnection( pxNewConnection );
	while( netconn_delete( pxNewConnection ) != ERR_OK )
	{
	vTaskDelay( webSHORT_DELAY );
	}
	}
	}
	}