/*********************************************************************
* Function: void FTPServer(void)
*
* PreCondition: FTPInit() must already be called.
*
* Input: None
*
* Output: Opened FTP connections are served.
*
* Side Effects: None
*
* Overview:
*
* Note: This function acts as a task (similar to one in
* RTOS). This function performs its task in
* co-operative manner. Main application must call
* this function repeatdly to ensure all open
* or new connections are served on time.
********************************************************************/
BOOL FTPServer(void)
{
BYTE v;
TICK currentTick;
if ( !TCPIsConnected(FTPSocket) )
{
FTPStringLen = 0;
FTPCommand = FTP_CMD_NONE;
smFTP = SM_FTP_NOT_CONNECTED;
FTPFlags.Val = 0;
smFTPCommand = SM_FTP_CMD_IDLE;
return TRUE;
}
if ( TCPIsGetReady(FTPSocket) )
{
lastActivity = TickGet();
while( TCPGet(FTPSocket, &v ) )
{
USARTPut(v);
FTPString[FTPStringLen++] = v;
if ( FTPStringLen == MAX_FTP_CMD_STRING_LEN )
FTPStringLen = 0;
}
TCPDiscard(FTPSocket);
if ( v == '\n' )
{
FTPString[FTPStringLen] = '\0';
FTPStringLen = 0;
ParseFTPString();
FTPCommand = ParseFTPCommand(FTP_argv[0]);
}
}
else if ( smFTP != SM_FTP_NOT_CONNECTED )
{
currentTick = TickGet();
currentTick = TickGetDiff(currentTick, lastActivity);
if ( currentTick >= FTP_TIMEOUT )
{
lastActivity = TickGet();
FTPCommand = FTP_CMD_QUIT;
smFTP = SM_FTP_CONNECTED;
}
}
switch(smFTP)
{
case SM_FTP_NOT_CONNECTED:
FTPResponse = FTP_RESP_BANNER;
lastActivity = TickGet();
/* No break - Continue... */
case SM_FTP_RESPOND:
SM_FTP_RESPOND_Label:
if(!TCPIsPutReady(FTPSocket))
{
return TRUE;
}
else
{
ROM char* pMsg;
pMsg = FTPResponseString[FTPResponse];
while( (v = *pMsg++) )
{
USARTPut(v);
TCPPut(FTPSocket, v);
}
TCPFlush(FTPSocket);
FTPResponse = FTP_RESP_NONE;
smFTP = SM_FTP_CONNECTED;
}
// No break - this will speed up little bit
case SM_FTP_CONNECTED:
if ( FTPCommand != FTP_CMD_NONE )
{
if ( ExecuteFTPCommand(FTPCommand) )
{
if ( FTPResponse != FTP_RESP_NONE )
smFTP = SM_FTP_RESPOND;
else if ( FTPCommand == FTP_CMD_QUIT )
smFTP = SM_FTP_NOT_CONNECTED;
FTPCommand = FTP_CMD_NONE;
smFTPCommand = SM_FTP_CMD_IDLE;
}
else if ( FTPResponse != FTP_RESP_NONE )
{
smFTP = SM_FTP_RESPOND;
goto SM_FTP_RESPOND_Label;
}
}
break;
}
return TRUE;
}
/*********************************************************************
* Function: void FTPServer(void)
*
* PreCondition: FTPInit() must already be called.
*
* Input: None
*
* Output: Opened FTP connections are served.
*
* Side Effects: None
*
* Overview:
*
* Note: This function acts as a task (similar to one in
* RTOS). This function performs its task in
* co-operative manner. Main application must call
* this function repeatdly to ensure all open
* or new connections are served on time.
********************************************************************/
BOOL FTPServer(void)
{
BYTE v;
DWORD currentTick;
if ( !TCPIsConnected(FTPSocket) )
{
FTPStringLen = 0;
FTPCommand = FTP_CMD_NONE;
smFTP = SM_FTP_NOT_CONNECTED;
FTPFlags.Val = 0;
smFTPCommand = SM_FTP_CMD_IDLE;
if(FTPDataSocket != INVALID_SOCKET)
{
TCPDisconnect(FTPDataSocket);
FTPDataSocket = INVALID_SOCKET;
}
return TRUE;
}
if ( TCPIsGetReady(FTPSocket) )
{
lastActivity = TickGet();
while( TCPGet(FTPSocket, &v ) )
{
FTPString[FTPStringLen++] = v;
if ( FTPStringLen == MAX_FTP_CMD_STRING_LEN )
FTPStringLen = 0;
}
if ( v == '\n' )
{
FTPString[FTPStringLen] = '\0';
FTPStringLen = 0;
ParseFTPString();
FTPCommand = ParseFTPCommand(FTP_argv[0]);
}
}
else if ( smFTP != SM_FTP_NOT_CONNECTED )
{
currentTick = TickGet();
currentTick = currentTick - lastActivity;
if ( currentTick >= FTP_TIMEOUT )
{
lastActivity = TickGet();
FTPCommand = FTP_CMD_QUIT;
smFTP = SM_FTP_CONNECTED;
}
}
switch(smFTP)
{
case SM_FTP_NOT_CONNECTED:
FTPResponse = FTP_RESP_BANNER;
lastActivity = TickGet();
// No break - Continue...
case SM_FTP_RESPOND:
SM_FTP_RESPOND_Label:
// Make sure there is enough TCP TX FIFO space to put our response
if(TCPIsPutReady(FTPSocket) < strlenpgm(FTPResponseString[FTPResponse]))
return TRUE;
TCPPutROMString(FTPSocket, (ROM BYTE*)FTPResponseString[FTPResponse]);
TCPFlush(FTPSocket);
FTPResponse = FTP_RESP_NONE;
smFTP = SM_FTP_CONNECTED;
// No break - this will speed up little bit
case SM_FTP_CONNECTED:
if ( FTPCommand != FTP_CMD_NONE )
{
if ( ExecuteFTPCommand(FTPCommand) )
{
if ( FTPResponse != FTP_RESP_NONE )
smFTP = SM_FTP_RESPOND;
else if ( FTPCommand == FTP_CMD_QUIT )
smFTP = SM_FTP_NOT_CONNECTED;
FTPCommand = FTP_CMD_NONE;
smFTPCommand = SM_FTP_CMD_IDLE;
}
else if ( FTPResponse != FTP_RESP_NONE )
{
smFTP = SM_FTP_RESPOND;
goto SM_FTP_RESPOND_Label;
}
}
break;
}
return TRUE;
}
