#include <stdio.h>
#include <string.h>
#include "conf_eth.h"
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
#include "serial.h"
#include "portmacro.h"
#include "lwip/api.h"
#include "lwip/tcpip.h"
#include "lwip/memp.h"
#include "lwip/stats.h"
#include "lwip/init.h"
#include "ctrl_access.h"
#include "fsaccess.h"
#include "config_file.h"
#include "ethernet.h"
#include "supervisor.h"
#include "shell.h"
#include "datalog.h"
#include "defaultpage.htm.h"
#include "tracedump.h"
#include "BasicWEB.h"

Macros
#define	ERR_BUFFER_SIZE 512

#define	ERR_DIR "errors"

#define	HTTP_CONFIG_FILE "A:/CFG/http.txt"

#define	webCONN_TIMEOUT 5000

#define	webHTTP_CONNECTION_PRIORITY (CTRLPANEL_WEB_SERVER_PRIORITY+1)

#define	webHTTP_CONNECTION_STACK_SIZE 384

#define	webHTTP_NB_CONN 1

#define	webHTTP_PORT ( 80 )

#define	webMAX_DATA_TO_SEND webNB_SECTOR_TO_SEND * FS_SIZE_OF_SECTOR

#define	webNB_SECTOR_TO_SEND 4

#define	webSERVER_FOLDER "A:/WEB/"

#define	webSERVER_PROTOCOL "HTTP/1.1"

#define	webSERVER_SOFTWARE "AVR32 UC3 WEB SERVER"

#define	webSHORT_DELAY ( 10 )

Typedefs
typedef ssize_t(*	pf_read_src )(int fd, void *buf, size_t count)

Functions
eExecStatus	e_webserver_cmd_get_config (eModId xModId, signed short FsNavId, int ac, signed portCHAR av[], signed portCHAR *ppcStringReply)
	The get webserver config command: get the config fields value of http port Takes no parameter. More...

eExecStatus	e_webserver_cmd_set_config (eModId xModId, signed short FsNavId, int ac, signed portCHAR av[], signed portCHAR *ppcStringReply)
	The set webserver config command: set the http port. Takes one parameter : port=ppppp. More...

	portTASK_FUNCTION (vBasicWEBServer, pvParameters)
	WEB server main task check for incoming connection and process it. More...

	portTASK_FUNCTION (prvweb_ProcessSingleConnection, pvParameters)
	process an incoming connection parse the request and close/delete the connection More...

	portTASK_FUNCTION_PROTO (prvweb_ProcessSingleConnection, pvParameters)

static unsigned portLONG	prulweb_BuildErrorBody (portCHAR response, int s, char title, const char *text)
	build the static error page body More...

static unsigned portLONG	prulweb_BuildErrorTail (portCHAR *response)
	build the static error page tail More...

static unsigned portLONG	prulweb_BuildHeaders (portCHAR response, int s, char title, char extra_header, char me, char *mt)
	build the HTTP header More...

static ssize_t	prv_read_default_page (int fd, void *buf, size_t count)
	Copy part of the Default html page to another buffer. More...

static void	prvweb_ParseCGIRequest (struct netconn pxNetCon, char request)
	parse the CGI request and send it to the shell More...

static void	prvweb_ParseHTMLRequest (struct netconn *pxNetCon)
	parse the incoming request parse the HTML request and send file or execute CGI request More...

static void	prvweb_SendErrorPage (struct netconn pxNetCon, int s, char extra_header, const char *text)
	send the static error page More...

static void	prvweb_SendFile (struct netconn pxNetCon, char filename)
	parse the file request and send the requested file to the host More...

Variables
static portSHORT	sCurrentNbHTTPConn = 0

xTaskHandle	tTaskHandle [webHTTP_NB_CONN] = { NULL }

static unsigned int	webHttpPort = 0

static size_t	x_default_page_len

xSemaphoreHandle	xCFGMutex

static xSemaphoreHandle	xMutexNbHTTPConn

xSemaphoreHandle	xWEBMutex

#define ERR_BUFFER_SIZE 512

The error buffer size for error page

Referenced by prvweb_SendErrorPage().

#define ERR_DIR "errors"

#define HTTP_CONFIG_FILE "A:/CFG/http.txt"

The config file location

Referenced by e_webserver_cmd_set_config(), and portTASK_FUNCTION().

#define webCONN_TIMEOUT 5000

The max timeout before killing all pending tasks (ms)

#define webHTTP_CONNECTION_PRIORITY (CTRLPANEL_WEB_SERVER_PRIORITY+1)

The priority of a http connection.

Referenced by portTASK_FUNCTION().

#define webHTTP_CONNECTION_STACK_SIZE 384

The stack size of a http connection task

Referenced by portTASK_FUNCTION().

#define webHTTP_NB_CONN 1

The max number of simultaneous http connection.

Referenced by portTASK_FUNCTION().

#define webHTTP_PORT ( 80 )

The port on which we listen.

Referenced by portTASK_FUNCTION().

#define webMAX_DATA_TO_SEND webNB_SECTOR_TO_SEND * FS_SIZE_OF_SECTOR

The max amount of fat data to try to send

Referenced by prv_read_default_page(), and prvweb_SendFile().

#define webNB_SECTOR_TO_SEND 4

The max number of sector to try to send

Referenced by prvweb_SendFile().

#define webSERVER_FOLDER "A:/WEB/"

The folder were server files are

Referenced by prvweb_ParseHTMLRequest().

#define webSERVER_PROTOCOL "HTTP/1.1"

The server protocol.

Referenced by prulweb_BuildHeaders().

#define webSERVER_SOFTWARE "AVR32 UC3 WEB SERVER"

The server software name.

Referenced by prulweb_BuildErrorTail(), and prulweb_BuildHeaders().

#define webSHORT_DELAY ( 10 )

Delay on close error.

Referenced by portTASK_FUNCTION().

typedef ssize_t(* pf_read_src)(int fd, void *buf, size_t count)

eExecStatus e_webserver_cmd_get_config	(	eModId	xModId,
		signed short	FsNavId,
		int	ac,
		signed portCHAR *	av[],
		signed portCHAR **	ppcStringReply
	)

The get webserver config command: get the config fields value of http port Takes no parameter.

Note: This function must be of the type pfShellCmd defined by the shell module.

Parameters

xModId	Input. The module that is calling this function.
FsNavId	Ignored.
ac	Input. The argument counter. For this command, should be 1.
av	Input. The argument vector.
ppcStringReply	Input/Output. The response string. If Input is NULL, no response string will be output. Else a malloc for the response string is performed here; the caller must free this string.

Returns: the status of the command execution.

References NULL, pvPortMalloc(), SHELL_ERRMSG_MEMALLOC, SHELL_EXECSTATUS_KO, SHELL_EXECSTATUS_OK, sprintf(), and webHttpPort.

Referenced by e_syscmds_cmd_get_config().

eExecStatus e_webserver_cmd_set_config	(	eModId	xModId,
		signed short	FsNavId,
		int	ac,
		signed portCHAR *	av[],
		signed portCHAR **	ppcStringReply
	)

The set webserver config command: set the http port. Takes one parameter : port=ppppp.

Note: This function must be of the type pfShellCmd defined by the shell module.

Parameters

xModId	Input. The module that is calling this function.
FsNavId	Ignored.
ac	Input. The argument counter. For this command, should be 1.
av	Input. The argument vector.
ppcStringReply	Input/Output. The response string. If Input is NULL, no response string will be output. Else a malloc for the response string is performed here; the caller must free this string.

Returns: the status of the command execution.

References config_file_set_value(), HTTP_CONFIG_FILE, NULL, pvPortMalloc(), SHELL_ERRMSG_CONFIGERROR, SHELL_EXECSTATUS_KO, SHELL_EXECSTATUS_OK, and SHELL_MSG_REBOOT.

Referenced by e_syscmds_cmd_set_config().

portTASK_FUNCTION	(	vBasicWEBServer	,
		pvParameters
	)

WEB server main task check for incoming connection and process it.

References config_file_get_value(), ERR_OK, HTTP_CONFIG_FILE, netconn_accept(), netconn_bind(), netconn_close(), netconn_delete(), netconn_listen, netconn_new, NETCONN_TCP, NULL, pcDefaultPage, pdFALSE, pdPASS, pdTRUE, prvweb_SendErrorPage(), sCurrentNbHTTPConn, TRACE_COM2, tTaskHandle, vSemaphoreCreateBinary, vTaskDelay(), webHTTP_CONNECTION_PRIORITY, webHTTP_CONNECTION_STACK_SIZE, webHTTP_NB_CONN, webHTTP_PORT, webHttpPort, webSHORT_DELAY, x_default_page_len, x_supervisor_SemaphoreGive(), x_supervisor_SemaphoreTake(), xSemaphoreGive, xSemaphoreTake, and xTaskCreate.

portTASK_FUNCTION	(	prvweb_ProcessSingleConnection	,
		pvParameters
	)

process an incoming connection parse the request and close/delete the connection

Note: Input. The netconn to use to send and receive data.

References ERR_OK, netconn_close(), netconn_delete(), NULL, pdTRUE, prvweb_ParseHTMLRequest(), sCurrentNbHTTPConn, tTaskHandle, vTaskDelay(), vTaskDelete(), webHTTP_NB_CONN, webSHORT_DELAY, x_supervisor_SemaphoreGive(), xSemaphoreGive, xSemaphoreTake, and xTaskGetCurrentTaskHandle().

portTASK_FUNCTION_PROTO	(	prvweb_ProcessSingleConnection	,
		pvParameters
	)

static unsigned portLONG prulweb_BuildErrorBody	(	portCHAR *	response,
		int	s,
		char *	title,
		const char *	text
	)

static

build the static error page body

Parameters

response	Input/Output. the buffer to store data.
s	Input. The error code.
title	Input. title of the error page.
text	Input. text to display in the error page.

References sprintf().

Referenced by prvweb_SendErrorPage().

static unsigned portLONG prulweb_BuildErrorTail ( portCHAR * response )

static

build the static error page tail

Parameters

response Input/Output. the buffer to store data.

References sprintf(), vEthernetGetIPAddr(), and webSERVER_SOFTWARE.

Referenced by prvweb_SendErrorPage().

static unsigned portLONG prulweb_BuildHeaders	(	portCHAR *	response,
		int	s,
		char *	title,
		char *	extra_header,
		char *	me,
		char *	mt
	)

static

build the HTTP header

Parameters

response	Input/Output. the buffer to store data.
s	Input. The page code (200, 404, etc).
title	Input. title of the page.
extra_header	Input. text to display in the error page.
me	Input. MIME encoding, if used.
mt	Input. MIME type if used.

References sprintf(), webSERVER_PROTOCOL, and webSERVER_SOFTWARE.

Referenced by prvweb_ParseCGIRequest(), prvweb_SendErrorPage(), and prvweb_SendFile().

static ssize_t prv_read_default_page	(	int	fd,
		void *	buf,
		size_t	count
	)

static

Copy part of the Default html page to another buffer.

Parameters

fd	Input. file descriptor. Ignored.
buf	Input/ouput. Destination memory ptr.
count	Input. Amount of bytes to read.

Returns: amount of data read (or -1 if error)

References FS_SIZE_OF_SECTOR, pcDefaultPage, webMAX_DATA_TO_SEND, and x_default_page_len.

Referenced by prvweb_SendFile().

static void prvweb_ParseCGIRequest	(	struct netconn *	pxNetCon,
		char *	request
	)

static

parse the CGI request and send it to the shell

Parameters

pxNetCon	Input. The netconn to use to send and receive data.
request	Input. The incoming CGI request.

References NAKED_TRACE_COM2, NETCONN_COPY, netconn_write(), NULL, prulweb_BuildHeaders(), pvPortMalloc(), Shell_exec(), SHELL_EXECSTATUS_OK, SYS_MODID_HTTP, and vPortFree().

Referenced by prvweb_ParseHTMLRequest().

static void prvweb_ParseHTMLRequest ( struct netconn * pxNetCon )

static

parse the incoming request parse the HTML request and send file or execute CGI request

Parameters

pxNetCon Input. The netconn to use to send and receive data.

References ERR_OK, MAX_FILE_PATH_LENGTH, NAKED_TRACE_COM2, netbuf_data(), netbuf_delete(), netconn_recv(), NULL, prvweb_ParseCGIRequest(), prvweb_SendErrorPage(), prvweb_SendFile(), pvPortMalloc(), sprintf(), vPortFree(), and webSERVER_FOLDER.

Referenced by portTASK_FUNCTION().

static void prvweb_SendErrorPage	(	struct netconn *	pxNetCon,
		int	s,
		char *	extra_header,
		const char *	text
	)

static

send the static error page

Parameters

pxNetCon	Input. The netconn to use to send and receive data.
s	Input. The error code.
extra_header	Input. data to push in the error answer.
text	Input. text to display in the error page.

References ERR_BUFFER_SIZE, NAKED_TRACE_COM2, NETCONN_COPY, netconn_write(), NULL, prulweb_BuildErrorBody(), prulweb_BuildErrorTail(), prulweb_BuildHeaders(), pvPortMalloc(), and vPortFree().

Referenced by portTASK_FUNCTION(), prvweb_ParseHTMLRequest(), and prvweb_SendFile().