/********************************************************/
/*  ntapi: Native API core library                      */
/*  Copyright (C) 2013--2017  Z. Gilboa                 */
/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
/********************************************************/

#include <psxtypes/psxtypes.h>
#include <ntapi/nt_object.h>
#include <ntapi/nt_file.h>
#include <ntapi/nt_socket.h>
#include <ntapi/ntapi.h>
#include "ntapi_impl.h"

typedef struct _nt_afd_recv_udp_info {
	nt_afd_recv_info	afd_recv;
	nt_sockaddr *		addr;
	nt_sockaddr_reply *	raddr;
} nt_afd_recv_udp_info;

int32_t __cdecl __ntapi_sc_recv(
	__in		nt_socket *		hssocket,
	__in		const void *		buffer,
	__in		size_t			len,
	__out		ssize_t *		bytes_received	__optional,
	__in		nt_sockaddr_reply *	raddr		__optional,
	__in		uintptr_t		afdflags	__optional,
	__in		uintptr_t		tdiflags	__optional,
	__out		nt_io_status_block *	iosb		__optional)
{
	nt_afd_buffer		afd_buffer;
	nt_afd_recv_udp_info	afd_recv;
	nt_io_status_block	siosb;

	iosb = iosb ? iosb : &siosb;

	/* conditional connect */
	if (raddr && (hssocket->protocol == NT_IPPROTO_UDP)) {
		afd_recv.raddr  = raddr;
		raddr->addrlen  = sizeof(raddr->addr);
		afd_recv.addr   = &raddr->addr;
	} else
		raddr = 0;

	/* tdiflags */
	if (tdiflags == 0)
		tdiflags = NT_TDI_RECEIVE_NORMAL;

	/* afd_buffer */
	afd_buffer.length = len;
	afd_buffer.buffer = (char *)buffer;

	/* afd_recv.afd_recv */
	afd_recv.afd_recv.afd_buffer_array = &afd_buffer;
	afd_recv.afd_recv.buffer_count     = 1;

	afd_recv.afd_recv.afd_flags = (uint32_t)afdflags;
	afd_recv.afd_recv.tdi_flags = (uint32_t)tdiflags;

	hssocket->iostatus = __ntapi->zw_device_io_control_file(
			hssocket->hsocket,
			hssocket->hevent,
			0,
			0,
			iosb,
			raddr ? NT_AFD_IOCTL_UDP_RECV : NT_AFD_IOCTL_RECV,
			&afd_recv,
			raddr ? sizeof(afd_recv) : sizeof(afd_recv.afd_recv),
			0,
			0);

	if (hssocket->iostatus && (hssocket->ntflags & __NT_FILE_SYNC_IO))
		__ntapi->sc_wait(hssocket,iosb,&hssocket->timeout);

	if (!hssocket->iostatus && bytes_received)
		*bytes_received = iosb->info;

	return hssocket->iostatus;
}