socket.c - Enable this flag if and only if you must comply …

/libs/network/cc3000/socket.c

https://github.com/shehperd/Espruino · C · 1183 lines · 456 code · 153 blank · 574 comment · 38 complexity · 0710f4547215da597520ca5c626dfc51 MD5 · raw file

/*****************************************************************************

*

*  socket.c  - CC3000 Host Driver Implementation.

*  Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/

*

*  Redistribution and use in source and binary forms, with or without

*  modification, are permitted provided that the following conditions

*  are met:

*

*    Redistributions of source code must retain the above copyright

*    notice, this list of conditions and the following disclaimer.

*

*    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.

*

*    Neither the name of Texas Instruments Incorporated nor the names of

*    its contributors may be used to endorse or promote products derived

*    from this software without specific prior written permission.

*

*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 

*  "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 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 

*  OWNER OR CONTRIBUTORS 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.

*

*****************************************************************************/



//*****************************************************************************

//

//! \addtogroup socket_api

//! @{

//

//*****************************************************************************



#include "jsinteractive.h"

#include "hci.h"

#include "socket.h"

#include "evnt_handler.h"

#include "netapp.h"



//Enable this flag if and only if you must comply with BSD socket 

//close() function

#ifdef _API_USE_BSD_CLOSE

   #define close(sd) closesocket(sd)

#endif



//Enable this flag if and only if you must comply with BSD socket read() and 

//write() functions

#ifdef _API_USE_BSD_READ_WRITE

              #define read(sd, buf, len, flags) recv(sd, buf, len, flags)

              #define write(sd, buf, len, flags) send(sd, buf, len, flags)

#endif



#define SOCKET_OPEN_PARAMS_LEN				(12)

#define SOCKET_CLOSE_PARAMS_LEN				(4)

#define SOCKET_ACCEPT_PARAMS_LEN			(4)

#define SOCKET_BIND_PARAMS_LEN				(20)

#define SOCKET_LISTEN_PARAMS_LEN			(8)

#define SOCKET_GET_HOST_BY_NAME_PARAMS_LEN	(9)

#define SOCKET_CONNECT_PARAMS_LEN			(20)

#define SOCKET_SELECT_PARAMS_LEN			(44)

#define SOCKET_SET_SOCK_OPT_PARAMS_LEN		(20)

#define SOCKET_GET_SOCK_OPT_PARAMS_LEN		(12)

#define SOCKET_RECV_FROM_PARAMS_LEN			(12)

#define SOCKET_SENDTO_PARAMS_LEN			(24)

#define SOCKET_MDNS_ADVERTISE_PARAMS_LEN	(12)





// The legnth of arguments for the SEND command: sd + buff_offset + len + flags, 

// while size of each parameter is 32 bit - so the total length is 16 bytes;



#define HCI_CMND_SEND_ARG_LENGTH	(16)





#define SELECT_TIMEOUT_MIN_MICRO_SECONDS  5000



#define HEADERS_SIZE_DATA       (SPI_HEADER_SIZE + 5)



#define SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE  (SPI_HEADER_SIZE + SIMPLE_LINK_HCI_CMND_HEADER_SIZE)



#define MDNS_DEVICE_SERVICE_MAX_LENGTH 	(32)





//*****************************************************************************

//

//! HostFlowControlConsumeBuff

//!

//!  @param  sd  socket descriptor

//!

//!  @return 0 in case there are buffers available, 

//!          -1 in case of bad socket

//!          -2 if there are no free buffers present (only when 

//!          SEND_NON_BLOCKING is enabled)

//!

//!  @brief  if SEND_NON_BLOCKING not define - block until have free buffer 

//!          becomes available, else return immediately  with correct status 

//!          regarding the buffers available.

//

//*****************************************************************************

int

HostFlowControlConsumeBuff(int sd)

{

#ifndef SEND_NON_BLOCKING

	/* wait in busy loop */

	do

	{

		// In case last transmission failed then we will return the last failure 

		// reason here.

		// Note that the buffer will not be allocated in this case

		if (tSLInformation.slTransmitDataError != 0)

		{

			errno = tSLInformation.slTransmitDataError;

			tSLInformation.slTransmitDataError = 0;

			return errno;

		}

		

		if(SOCKET_STATUS_ACTIVE != get_socket_active_status(sd))

			return -1;

	} while(0 == tSLInformation.usNumberOfFreeBuffers);

	

	tSLInformation.usNumberOfFreeBuffers--;

	

	return 0;

#else

	

	// In case last transmission failed then we will return the last failure 

	// reason here.

	// Note that the buffer will not be allocated in this case

	if (tSLInformation.slTransmitDataError != 0)

	{

		errno = tSLInformation.slTransmitDataError;

		tSLInformation.slTransmitDataError = 0;

		return errno;

	}

	if(SOCKET_STATUS_ACTIVE != get_socket_active_status(sd))

		return -1;

	

	//If there are no available buffers, return -2. It is recommended to use  

	// select or receive to see if there is any buffer occupied with received data

	// If so, call receive() to release the buffer.

	if(0 == tSLInformation.usNumberOfFreeBuffers)

	{

		return -2;

	}

	else

	{

		tSLInformation.usNumberOfFreeBuffers--;

		return 0;

	}

#endif

}



//*****************************************************************************

//

//! socket

//!

//!  @param  domain    selects the protocol family which will be used for 

//!                    communication. On this version only AF_INET is supported

//!  @param  type      specifies the communication semantics. On this version 

//!                    only SOCK_STREAM, SOCK_DGRAM, SOCK_RAW are supported

//!  @param  protocol  specifies a particular protocol to be used with the 

//!                    socket IPPROTO_TCP, IPPROTO_UDP or IPPROTO_RAW are 

//!                    supported.

//!

//!  @return  On success, socket handle that is used for consequent socket 

//!           operations. On error, -1 is returned.

//!

//!  @brief  create an endpoint for communication

//!          The socket function creates a socket that is bound to a specific 

//!          transport service provider. This function is called by the 

//!          application layer to obtain a socket handle.

//

//*****************************************************************************



int

socket(long domain, long type, long protocol)

{

    cc3000_check_irq_pin();



	long ret;

	unsigned char *ptr, *args;

	

	ret = EFAIL;

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in HCI packet structure

	args = UINT32_TO_STREAM(args, domain);

	args = UINT32_TO_STREAM(args, type);

	args = UINT32_TO_STREAM(args, protocol);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_SOCKET, ptr, SOCKET_OPEN_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_SOCKET, &ret);

	

	// Process the event 

	errno = ret;

	

	set_socket_active_status(ret, SOCKET_STATUS_ACTIVE);

	

	return(ret);

}



//*****************************************************************************

//

//! closesocket

//!

//!  @param  sd    socket handle.

//!

//!  @return  On success, zero is returned. On error, -1 is returned.

//!

//!  @brief  The socket function closes a created socket.

//

//*****************************************************************************



long

closesocket(long sd)

{

    cc3000_check_irq_pin();

	long ret;

	unsigned char *ptr, *args;

	

	ret = EFAIL;

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in HCI packet structure

	args = UINT32_TO_STREAM(args, sd);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_CLOSE_SOCKET,

									 ptr, SOCKET_CLOSE_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_CLOSE_SOCKET, &ret);

	errno = ret;

	

	// since 'close' call may result in either OK (and then it closed) or error 

	// mark this socket as invalid 

	set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);

	

	return(ret);

}



//*****************************************************************************

//

//! accept

//!

//!  @param[in]   sd      socket descriptor (handle)              

//!  @param[out]  addr    the argument addr is a pointer to a sockaddr structure

//!                       This structure is filled in with the address of the  

//!                       peer socket, as known to the communications layer.        

//!                       determined. The exact format of the address returned             

//!                       addr is by the socket's address sockaddr. 

//!                       On this version only AF_INET is supported.

//!                       This argument returns in network order.

//!  @param[out] addrlen  the addrlen argument is a value-result argument: 

//!                       it should initially contain the size of the structure

//!                       pointed to by addr.

//!

//!  @return  For socket in blocking mode:

//!				      On success, socket handle. on failure negative

//!			      For socket in non-blocking mode:

//!				     - On connection establishment, socket handle

//!				     - On connection pending, SOC_IN_PROGRESS (-2)

//!			       - On failure, SOC_ERROR	(-1)

//!

//!  @brief  accept a connection on a socket:

//!          This function is used with connection-based socket types 

//!          (SOCK_STREAM). It extracts the first connection request on the 

//!          queue of pending connections, creates a new connected socket, and

//!          returns a new file descriptor referring to that socket.

//!          The newly created socket is not in the listening state. 

//!          The original socket sd is unaffected by this call. 

//!          The argument sd is a socket that has been created with socket(),

//!          bound to a local address with bind(), and is  listening for 

//!          connections after a listen(). The argument addr is a pointer 

//!          to a sockaddr structure. This structure is filled in with the 

//!          address of the peer socket, as known to the communications layer.

//!          The exact format of the address returned addr is determined by the 

//!          socket's address family. The addrlen argument is a value-result

//!          argument: it should initially contain the size of the structure

//!          pointed to by addr, on return it will contain the actual 

//!          length (in bytes) of the address returned.

//!

//! @sa     socket ; bind ; listen

//

//*****************************************************************************



long

accept(long sd, sockaddr *addr, socklen_t *addrlen)

{

    cc3000_check_irq_pin();

	long ret;

	unsigned char *ptr, *args;

	tBsdReturnParams tAcceptReturnArguments;

	

	ret = EFAIL;

	tAcceptReturnArguments.iStatus = EFAIL; // in case of timeout

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_ACCEPT,

									 ptr, SOCKET_ACCEPT_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_ACCEPT, &tAcceptReturnArguments);

	

	// if we had a problem while waiting, just exit...

	if (jspIsInterrupted()) return -1;

	

	// need specify return parameters!!!

	memcpy(addr, &tAcceptReturnArguments.tSocketAddress, ASIC_ADDR_LEN);

	*addrlen = ASIC_ADDR_LEN;

	errno = tAcceptReturnArguments.iStatus; 

	ret = errno;

	

	// if succeeded, iStatus = new socket descriptor. otherwise - error number 

	if(M_IS_VALID_SD(ret))

	{

		set_socket_active_status(ret, SOCKET_STATUS_ACTIVE);

	}

	else

	{

		set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);

	}

	

	return(ret);

}



//*****************************************************************************

//

//! bind

//!

//!  @param[in]   sd      socket descriptor (handle)              

//!  @param[out]  addr    specifies the destination address. On this version 

//!                       only AF_INET is supported.

//!  @param[out] addrlen  contains the size of the structure pointed to by addr.

//!

//!  @return  	On success, zero is returned. On error, -1 is returned.

//!

//!  @brief  assign a name to a socket

//!          This function gives the socket the local address addr.

//!          addr is addrlen bytes long. Traditionally, this is called when a 

//!          socket is created with socket, it exists in a name space (address 

//!          family) but has no name assigned.

//!          It is necessary to assign a local address before a SOCK_STREAM

//!          socket may receive connections.

//!

//! @sa     socket ; accept ; listen

//

//*****************************************************************************



long

bind(long sd, const sockaddr *addr, long addrlen)

{

    cc3000_check_irq_pin();

	long ret;

	unsigned char *ptr, *args;

	

	ret = EFAIL;

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	addrlen = ASIC_ADDR_LEN;

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, 0x00000008);

	args = UINT32_TO_STREAM(args, addrlen);

	ARRAY_TO_STREAM(args, ((unsigned char *)addr), addrlen);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_BIND,

									 ptr, SOCKET_BIND_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_BIND, &ret);

	

	errno = ret;

  

	return(ret);

}



//*****************************************************************************

//

//! listen

//!

//!  @param[in]   sd      socket descriptor (handle)              

//!  @param[in]  backlog  specifies the listen queue depth. On this version

//!                       backlog is not supported.

//!  @return  	On success, zero is returned. On error, -1 is returned.

//!

//!  @brief  listen for connections on a socket

//!          The willingness to accept incoming connections and a queue

//!          limit for incoming connections are specified with listen(),

//!          and then the connections are accepted with accept.

//!          The listen() call applies only to sockets of type SOCK_STREAM

//!          The backlog parameter defines the maximum length the queue of

//!          pending connections may grow to. 

//!

//! @sa     socket ; accept ; bind

//!

//! @note   On this version, backlog is not supported

//

//*****************************************************************************



long

listen(long sd, long backlog)

{

    cc3000_check_irq_pin();

	long ret;

	unsigned char *ptr, *args;

	

	ret = EFAIL;

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, backlog);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_LISTEN,

									 ptr, SOCKET_LISTEN_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_LISTEN, &ret);

	errno = ret;

	

	return(ret);

}



//*****************************************************************************

//

//! gethostbyname

//!

//!  @param[in]   hostname     host name              

//!  @param[in]   usNameLen    name length 

//!  @param[out]  out_ip_addr  This parameter is filled in with host IP address. 

//!                            In case that host name is not resolved, 

//!                            out_ip_addr is zero.                  

//!  @return  	On success, positive is returned. On error, negative is returned

//!

//!  @brief  Get host IP by name. Obtain the IP Address of machine on network, 

//!          by its name.

//!

//!  @note  On this version, only blocking mode is supported. Also note that

//!		     the function requires DNS server to be configured prior to its usage.

//

//*****************************************************************************



#ifndef CC3000_TINY_DRIVER

int 

gethostbyname(char * hostname, unsigned short usNameLen, 

							unsigned long* out_ip_addr)

{

    cc3000_check_irq_pin();

	tBsdGethostbynameParams ret;

	unsigned char *ptr, *args;

	

	errno = EFAIL;

	

	if (usNameLen > HOSTNAME_MAX_LENGTH)

	{

		return errno;

	}

	

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);

	

	// Fill in HCI packet structure

	args = UINT32_TO_STREAM(args, 8);

	args = UINT32_TO_STREAM(args, usNameLen);

	ARRAY_TO_STREAM(args, hostname, usNameLen);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_GETHOSTNAME, ptr, SOCKET_GET_HOST_BY_NAME_PARAMS_LEN

									 + usNameLen - 1);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_EVNT_BSD_GETHOSTBYNAME, &ret);

	

	errno = ret.retVal;

	

	(*((long*)out_ip_addr)) = ret.outputAddress;

	

	return (errno);

	

}

#endif



//*****************************************************************************

//

//! connect

//!

//!  @param[in]   sd       socket descriptor (handle)         

//!  @param[in]   addr     specifies the destination addr. On this version

//!                        only AF_INET is supported.

//!  @param[out]  addrlen  contains the size of the structure pointed to by addr    

//!  @return  	On success, zero is returned. On error, -1 is returned

//!

//!  @brief  initiate a connection on a socket 

//!          Function connects the socket referred to by the socket descriptor 

//!          sd, to the address specified by addr. The addrlen argument 

//!          specifies the size of addr. The format of the address in addr is 

//!          determined by the address space of the socket. If it is of type 

//!          SOCK_DGRAM, this call specifies the peer with which the socket is 

//!          to be associated; this address is that to which datagrams are to be

//!          sent, and the only address from which datagrams are to be received.  

//!          If the socket is of type SOCK_STREAM, this call attempts to make a 

//!          connection to another socket. The other socket is specified  by 

//!          address, which is an address in the communications space of the

//!          socket. Note that the function implements only blocking behavior 

//!          thus the caller will be waiting either for the connection 

//!          establishment or for the connection establishment failure.

//!

//!  @sa socket

//

//*****************************************************************************



long

connect(long sd, const sockaddr *addr, long addrlen)

{

    cc3000_check_irq_pin();

	long int ret;

	unsigned char *ptr, *args;

	

	ret = EFAIL;

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);

	addrlen = 8;

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, 0x00000008);

	args = UINT32_TO_STREAM(args, addrlen);

	ARRAY_TO_STREAM(args, ((unsigned char *)addr), addrlen);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_CONNECT,

									 ptr, SOCKET_CONNECT_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_CONNECT, &ret);

	

	errno = ret;

	

	return((long)ret);

}





//*****************************************************************************

//

//! select

//!

//!  @param[in]   nfds       the highest-numbered file descriptor in any of the

//!                           three sets, plus 1.     

//!  @param[out]   writesds   socket descriptors list for write monitoring

//!  @param[out]   readsds    socket descriptors list for read monitoring  

//!  @param[out]   exceptsds  socket descriptors list for exception monitoring

//!  @param[in]   timeout     is an upper bound on the amount of time elapsed

//!                           before select() returns. Null means infinity 

//!                           timeout. The minimum timeout is 5 milliseconds,

//!                          less than 5 milliseconds will be set

//!                           automatically to 5 milliseconds.

//!  @return  	On success, select() returns the number of file descriptors

//!             contained in the three returned descriptor sets (that is, the

//!             total number of bits that are set in readfds, writefds,

//!             exceptfds) which may be zero if the timeout expires before

//!             anything interesting  happens.

//!             On error, -1 is returned.

//!                   *readsds - return the sockets on which Read request will

//!                              return without delay with valid data.

//!                   *writesds - return the sockets on which Write request 

//!                                 will return without delay.

//!                   *exceptsds - return the sockets which closed recently.

//!

//!  @brief  Monitor socket activity  

//!          Select allow a program to monitor multiple file descriptors,

//!          waiting until one or more of the file descriptors become 

//!         "ready" for some class of I/O operation 

//!

//!  @Note   If the timeout value set to less than 5ms it will automatically set

//!          to 5ms to prevent overload of the system

//!

//!  @sa socket

//

//*****************************************************************************



int

select(long nfds, fd_set *readsds, fd_set *writesds, fd_set *exceptsds, 

       struct timeval *timeout)

{

    cc3000_check_irq_pin();

	unsigned char *ptr, *args;

	tBsdSelectRecvParams tParams;

	unsigned long is_blocking;

	

	if( timeout == NULL)

	{

		is_blocking = 1; /* blocking , infinity timeout */

	}

	else

	{

		is_blocking = 0; /* no blocking, timeout */

	}

	

	// Fill in HCI packet structure

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, nfds);

	args = UINT32_TO_STREAM(args, 0x00000014);

	args = UINT32_TO_STREAM(args, 0x00000014);

	args = UINT32_TO_STREAM(args, 0x00000014);

	args = UINT32_TO_STREAM(args, 0x00000014);

	args = UINT32_TO_STREAM(args, is_blocking);

	args = UINT32_TO_STREAM(args, ((readsds) ? *(unsigned long*)readsds : 0));

	args = UINT32_TO_STREAM(args, ((writesds) ? *(unsigned long*)writesds : 0));

	args = UINT32_TO_STREAM(args, ((exceptsds) ? *(unsigned long*)exceptsds : 0));

	

	if (timeout)

	{

		if ( 0 == timeout->tv_sec && timeout->tv_usec < 

				SELECT_TIMEOUT_MIN_MICRO_SECONDS)

		{

			timeout->tv_usec = SELECT_TIMEOUT_MIN_MICRO_SECONDS;

		}

		args = UINT32_TO_STREAM(args, timeout->tv_sec);

		args = UINT32_TO_STREAM(args, timeout->tv_usec);

	}

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_BSD_SELECT, ptr, SOCKET_SELECT_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_EVNT_SELECT, &tParams);

	

	// Update actually read FD

	if (tParams.iStatus >= 0)

	{

		if (readsds)

		{

			memcpy(readsds, &tParams.uiRdfd, sizeof(tParams.uiRdfd));

		}

		

		if (writesds)

		{

			memcpy(writesds, &tParams.uiWrfd, sizeof(tParams.uiWrfd)); 

		}

		

		if (exceptsds)

		{

			memcpy(exceptsds, &tParams.uiExfd, sizeof(tParams.uiExfd)); 

		}

		

		return(tParams.iStatus);

		

	}

	else

	{

		errno = tParams.iStatus;

		return(-1);

	}

}



//*****************************************************************************

//

//! setsockopt

//!

//!  @param[in]   sd          socket handle

//!  @param[in]   level       defines the protocol level for this option

//!  @param[in]   optname     defines the option name to Interrogate

//!  @param[in]   optval      specifies a value for the option

//!  @param[in]   optlen      specifies the length of the option value

//!  @return  	On success, zero is returned. On error, -1 is returned

//!

//!  @brief  set socket options

//!          This function manipulate the options associated with a socket.

//!          Options may exist at multiple protocol levels; they are always

//!          present at the uppermost socket level.

//!          When manipulating socket options the level at which the option 

//!          resides and the name of the option must be specified.  

//!          To manipulate options at the socket level, level is specified as 

//!          SOL_SOCKET. To manipulate options at any other level the protocol 

//!          number of the appropriate protocol controlling the option is 

//!          supplied. For example, to indicate that an option is to be 

//!          interpreted by the TCP protocol, level should be set to the 

//!          protocol number of TCP; 

//!          The parameters optval and optlen are used to access optval - 

//!          use for setsockopt(). For getsockopt() they identify a buffer

//!          in which the value for the requested option(s) are to 

//!          be returned. For getsockopt(), optlen is a value-result 

//!          parameter, initially containing the size of the buffer 

//!          pointed to by option_value, and modified on return to 

//!          indicate the actual size of the value returned. If no option 

//!          value is to be supplied or returned, option_value may be NULL.

//!

//!  @Note   On this version the following two socket options are enabled:

//!    			 The only protocol level supported in this version

//!          is SOL_SOCKET (level).

//!		       1. SOCKOPT_RECV_TIMEOUT (optname)

//!			      SOCKOPT_RECV_TIMEOUT configures recv and recvfrom timeout 

//!           in milliseconds.

//!		        In that case optval should be pointer to unsigned long.

//!		       2. SOCKOPT_NONBLOCK (optname). sets the socket non-blocking mode on 

//!           or off.

//!		        In that case optval should be SOCK_ON or SOCK_OFF (optval).

//!

//!  @sa getsockopt

//

//*****************************************************************************



#ifndef CC3000_TINY_DRIVER

int

setsockopt(long sd, long level, long optname, const void *optval,

					 socklen_t optlen)

{

    cc3000_check_irq_pin();

	int ret;

	unsigned char *ptr, *args;

	

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, level);

	args = UINT32_TO_STREAM(args, optname);

	args = UINT32_TO_STREAM(args, 0x00000008);

	args = UINT32_TO_STREAM(args, optlen);

	ARRAY_TO_STREAM(args, ((unsigned char *)optval), optlen);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_SETSOCKOPT,

									 ptr, SOCKET_SET_SOCK_OPT_PARAMS_LEN  + optlen);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_SETSOCKOPT, &ret);

	

	if (ret >= 0)

	{

		return (0);

	}

	else

	{

		errno = ret;

		return ret;

	}

}

#endif



//*****************************************************************************

//

//! getsockopt

//!

//!  @param[in]   sd          socket handle

//!  @param[in]   level       defines the protocol level for this option

//!  @param[in]   optname     defines the option name to Interrogate

//!  @param[out]   optval      specifies a value for the option

//!  @param[out]   optlen      specifies the length of the option value

//!  @return  	On success, zero is returned. On error, -1 is returned

//!

//!  @brief  set socket options

//!          This function manipulate the options associated with a socket.

//!          Options may exist at multiple protocol levels; they are always

//!          present at the uppermost socket level.

//!          When manipulating socket options the level at which the option 

//!          resides and the name of the option must be specified.  

//!          To manipulate options at the socket level, level is specified as 

//!          SOL_SOCKET. To manipulate options at any other level the protocol 

//!          number of the appropriate protocol controlling the option is 

//!          supplied. For example, to indicate that an option is to be 

//!          interpreted by the TCP protocol, level should be set to the 

//!          protocol number of TCP; 

//!          The parameters optval and optlen are used to access optval - 

//!          use for setsockopt(). For getsockopt() they identify a buffer

//!          in which the value for the requested option(s) are to 

//!          be returned. For getsockopt(), optlen is a value-result 

//!          parameter, initially containing the size of the buffer 

//!          pointed to by option_value, and modified on return to 

//!          indicate the actual size of the value returned. If no option 

//!          value is to be supplied or returned, option_value may be NULL.

//!

//!  @Note   On this version the following two socket options are enabled:

//!    			 The only protocol level supported in this version

//!          is SOL_SOCKET (level).

//!		       1. SOCKOPT_RECV_TIMEOUT (optname)

//!			      SOCKOPT_RECV_TIMEOUT configures recv and recvfrom timeout 

//!           in milliseconds.

//!		        In that case optval should be pointer to unsigned long.

//!		       2. SOCKOPT_NONBLOCK (optname). sets the socket non-blocking mode on 

//!           or off.

//!		        In that case optval should be SOCK_ON or SOCK_OFF (optval).

//!

//!  @sa setsockopt

//

//*****************************************************************************



int

getsockopt (long sd, long level, long optname, void *optval, socklen_t *optlen)

{

    cc3000_check_irq_pin();

	unsigned char *ptr, *args;

	tBsdGetSockOptReturnParams  tRetParams;

	

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, level);

	args = UINT32_TO_STREAM(args, optname);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_GETSOCKOPT,

									 ptr, SOCKET_GET_SOCK_OPT_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_CMND_GETSOCKOPT, &tRetParams);

	

	if (((signed char)tRetParams.iStatus) >= 0)

	{

		*optlen = 4;

		memcpy(optval, tRetParams.ucOptValue, 4);

		return (0);

	}

	else

	{

		errno = tRetParams.iStatus;

		return errno;

	}

}



//*****************************************************************************

//

//!  simple_link_recv

//!

//!  @param sd       socket handle

//!  @param buf      read buffer

//!  @param len      buffer length

//!  @param flags    indicates blocking or non-blocking operation

//!  @param from     pointer to an address structure indicating source address

//!  @param fromlen  source address structure size

//!

//!  @return         Return the number of bytes received, or -1 if an error

//!                  occurred

//!

//!  @brief          Read data from socket

//!                  Return the length of the message on successful completion.

//!                  If a message is too long to fit in the supplied buffer,

//!                  excess bytes may be discarded depending on the type of

//!                  socket the message is received from

//

//*****************************************************************************

int

simple_link_recv(long sd, void *buf, long len, long flags, sockaddr *from,

                socklen_t *fromlen, long opcode)

{

    cc3000_check_irq_pin();

	unsigned char *ptr, *args;

	tBsdReadReturnParams tSocketReadEvent;

	

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_CMD);

	

	// Fill in HCI packet structure

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, len);

	args = UINT32_TO_STREAM(args, flags);

	

	// Generate the read command, and wait for the 

	hci_command_send(opcode,  ptr, SOCKET_RECV_FROM_PARAMS_LEN);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(opcode, &tSocketReadEvent);

	

	// In case the number of bytes is more then zero - read data

	if (tSocketReadEvent.iNumberOfBytes > 0)

	{

		// Wait for the data in a synchronous way. Here we assume that the bug is 

		// big enough to store also parameters of receive from too....

		SimpleLinkWaitData(buf, (unsigned char *)from, (unsigned char *)fromlen);

	}

	





	errno = tSocketReadEvent.iNumberOfBytes;



	return(tSocketReadEvent.iNumberOfBytes);

}



//*****************************************************************************

//

//!  recv

//!

//!  @param[in]  sd     socket handle

//!  @param[out] buf    Points to the buffer where the message should be stored

//!  @param[in]  len    Specifies the length in bytes of the buffer pointed to 

//!                     by the buffer argument.

//!  @param[in] flags   Specifies the type of message reception. 

//!                     On this version, this parameter is not supported.

//!

//!  @return         Return the number of bytes received, or -1 if an error

//!                  occurred

//!

//!  @brief          function receives a message from a connection-mode socket

//!

//!  @sa recvfrom

//!

//!  @Note On this version, only blocking mode is supported.

//

//*****************************************************************************



int

recv(long sd, void *buf, long len, long flags)

{

	return(simple_link_recv(sd, buf, len, flags, NULL, NULL, HCI_CMND_RECV));

}



//*****************************************************************************

//

//!  recvfrom

//!

//!  @param[in]  sd     socket handle

//!  @param[out] buf    Points to the buffer where the message should be stored

//!  @param[in]  len    Specifies the length in bytes of the buffer pointed to 

//!                     by the buffer argument.

//!  @param[in] flags   Specifies the type of message reception. 

//!                     On this version, this parameter is not supported.

//!  @param[in] from   pointer to an address structure indicating the source

//!                    address: sockaddr. On this version only AF_INET is

//!                    supported.

//!  @param[in] fromlen   source address tructure size

//!

//!  @return         Return the number of bytes received, or -1 if an error

//!                  occurred

//!

//!  @brief         read data from socket

//!                 function receives a message from a connection-mode or

//!                 connectionless-mode socket. Note that raw sockets are not

//!                 supported.

//!

//!  @sa recv

//!

//!  @Note On this version, only blocking mode is supported.

//

//*****************************************************************************

int

recvfrom(long sd, void *buf, long len, long flags, sockaddr *from,

         socklen_t *fromlen)

{

	return(simple_link_recv(sd, buf, len, flags, from, fromlen,

													HCI_CMND_RECVFROM));

}



//*****************************************************************************

//

//!  simple_link_send

//!

//!  @param sd       socket handle

//!  @param buf      write buffer

//!  @param len      buffer length

//!  @param flags    On this version, this parameter is not supported

//!  @param to       pointer to an address structure indicating destination

//!                  address

//!  @param tolen    destination address structure size

//!

//!  @return         Return the number of bytes transmitted, or -1 if an error

//!                  occurred, or -2 in case there are no free buffers available

//!                 (only when SEND_NON_BLOCKING is enabled)

//!

//!  @brief          This function is used to transmit a message to another

//!                  socket

//

//*****************************************************************************

int

simple_link_send(long sd, const void *buf, long len, long flags,

              const sockaddr *to, long tolen, long opcode)

{    

    cc3000_check_irq_pin();

	unsigned char uArgSize,  addrlen;

	unsigned char *ptr, *pDataPtr, *args;

	unsigned long addr_offset;

	int res;

        tBsdReadReturnParams tSocketSendEvent;

	

	// Check the bsd_arguments

	if (0 != (res = HostFlowControlConsumeBuff(sd)))

	{

		return res;

	}

	

	//Update the number of sent packets

	tSLInformation.NumberOfSentPackets++;

	

	// Allocate a buffer and construct a packet and send it over spi

	ptr = tSLInformation.pucTxCommandBuffer;

	args = (ptr + HEADERS_SIZE_DATA);

	

	// Update the offset of data and parameters according to the command

	switch(opcode)

	{ 

	case HCI_CMND_SENDTO:

		{

			addr_offset = len + sizeof(len) + sizeof(len);

			addrlen = 8;

			uArgSize = SOCKET_SENDTO_PARAMS_LEN;

			pDataPtr = ptr + HEADERS_SIZE_DATA + SOCKET_SENDTO_PARAMS_LEN;

			break;

		}

		

	case HCI_CMND_SEND:

		{

			tolen = 0;

			to = NULL;

			uArgSize = HCI_CMND_SEND_ARG_LENGTH;

			pDataPtr = ptr + HEADERS_SIZE_DATA + HCI_CMND_SEND_ARG_LENGTH;

			break;

		}

		

	default:

		{

			break;

		}

	}

	

	// Fill in temporary command buffer

	args = UINT32_TO_STREAM(args, sd);

	args = UINT32_TO_STREAM(args, uArgSize - sizeof(sd));

	args = UINT32_TO_STREAM(args, len);

	args = UINT32_TO_STREAM(args, flags);

	

	if (opcode == HCI_CMND_SENDTO)

	{

		args = UINT32_TO_STREAM(args, addr_offset);

		args = UINT32_TO_STREAM(args, addrlen);

	}

	

	// Copy the data received from user into the TX Buffer

	ARRAY_TO_STREAM(pDataPtr, ((unsigned char *)buf), len);

	

	// In case we are using SendTo, copy the to parameters

	if (opcode == HCI_CMND_SENDTO)

	{	

		ARRAY_TO_STREAM(pDataPtr, ((unsigned char *)to), tolen);

	}

	

	// Initiate a HCI command

	hci_data_send(opcode, ptr, uArgSize, len,(unsigned char*)to, tolen);

        

         if (opcode == HCI_CMND_SENDTO)

            SimpleLinkWaitEvent(HCI_EVNT_SENDTO, &tSocketSendEvent);

         else

            SimpleLinkWaitEvent(HCI_EVNT_SEND, &tSocketSendEvent);



	return	(len);

}





//*****************************************************************************

//

//!  send

//!

//!  @param sd       socket handle

//!  @param buf      Points to a buffer containing the message to be sent

//!  @param len      message size in bytes

//!  @param flags    On this version, this parameter is not supported

//!

//!  @return         Return the number of bytes transmitted, or -1 if an

//!                  error occurred

//!

//!  @brief          Write data to TCP socket

//!                  This function is used to transmit a message to another 

//!                  socket.

//!

//!  @Note           On this version, only blocking mode is supported.

//!

//!  @sa             sendto

//

//*****************************************************************************



int

send(long sd, const void *buf, long len, long flags)

{

	return(simple_link_send(sd, buf, len, flags, NULL, 0, HCI_CMND_SEND));

}



//*****************************************************************************

//

//!  sendto

//!

//!  @param sd       socket handle

//!  @param buf      Points to a buffer containing the message to be sent

//!  @param len      message size in bytes

//!  @param flags    On this version, this parameter is not supported

//!  @param to       pointer to an address structure indicating the destination

//!                  address: sockaddr. On this version only AF_INET is

//!                  supported.

//!  @param tolen    destination address structure size

//!

//!  @return         Return the number of bytes transmitted, or -1 if an

//!                  error occurred

//!

//!  @brief          Write data to TCP socket

//!                  This function is used to transmit a message to another 

//!                  socket.

//!

//!  @Note           On this version, only blocking mode is supported.

//!

//!  @sa             send

//

//*****************************************************************************



int

sendto(long sd, const void *buf, long len, long flags, const sockaddr *to,

       socklen_t tolen)

{

	return(simple_link_send(sd, buf, len, flags, to, tolen, HCI_CMND_SENDTO));

}



//*****************************************************************************

//

//!  mdnsAdvertiser

//!

//!  @param[in] mdnsEnabled         flag to enable/disable the mDNS feature

//!  @param[in] deviceServiceName   Service name as part of the published

//!                                 canonical domain name

//!  @param[in] deviceServiceNameLength   Length of the service name

//!  

//!

//!  @return   On success, zero is returned, return SOC_ERROR if socket was not 

//!            opened successfully, or if an error occurred.

//!

//!  @brief    Set CC3000 in mDNS advertiser mode in order to advertise itself.

//

//*****************************************************************************



int

mdnsAdvertiser(unsigned short mdnsEnabled, char * deviceServiceName, unsigned short deviceServiceNameLength)

{

	int ret;

 	unsigned char *pTxBuffer, *pArgs;

	

	if (deviceServiceNameLength > MDNS_DEVICE_SERVICE_MAX_LENGTH)

	{

		return EFAIL;

	}

	

	pTxBuffer = tSLInformation.pucTxCommandBuffer;

	pArgs = (pTxBuffer + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);

	

	// Fill in HCI packet structure

	pArgs = UINT32_TO_STREAM(pArgs, mdnsEnabled);

	pArgs = UINT32_TO_STREAM(pArgs, 8);

	pArgs = UINT32_TO_STREAM(pArgs, deviceServiceNameLength);

	ARRAY_TO_STREAM(pArgs, deviceServiceName, deviceServiceNameLength);

	

	// Initiate a HCI command

	hci_command_send(HCI_CMND_MDNS_ADVERTISE, pTxBuffer, SOCKET_MDNS_ADVERTISE_PARAMS_LEN + deviceServiceNameLength);

	

	// Since we are in blocking state - wait for event complete

	SimpleLinkWaitEvent(HCI_EVNT_MDNS_ADVERTISE, &ret);

	

	return ret;

	

}