/**
 * WinPR: Windows Portable Runtime
 * Asynchronous I/O Functions
 *
 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef WINPR_IO_H
#define WINPR_IO_H

#include <winpr/winpr.h>
#include <winpr/wtypes.h>

#ifdef _WIN32

#include <winioctl.h>

#else

#include <winpr/nt.h>

typedef struct _OVERLAPPED
{
	ULONG_PTR Internal;
	ULONG_PTR InternalHigh;
	union {
		struct
		{
			DWORD Offset;
			DWORD OffsetHigh;
		};
		PVOID Pointer;
	};
	HANDLE hEvent;
} OVERLAPPED, *LPOVERLAPPED;

typedef struct _OVERLAPPED_ENTRY
{
	ULONG_PTR lpCompletionKey;
	LPOVERLAPPED lpOverlapped;
	ULONG_PTR Internal;
	DWORD dwNumberOfBytesTransferred;
} OVERLAPPED_ENTRY, *LPOVERLAPPED_ENTRY;

#ifdef __cplusplus
extern "C"
{
#endif

	WINPR_API BOOL GetOverlappedResult(HANDLE hFile, LPOVERLAPPED lpOverlapped,
	                                   LPDWORD lpNumberOfBytesTransferred, BOOL bWait);

	WINPR_API BOOL GetOverlappedResultEx(HANDLE hFile, LPOVERLAPPED lpOverlapped,
	                                     LPDWORD lpNumberOfBytesTransferred, DWORD dwMilliseconds,
	                                     BOOL bAlertable);

	WINPR_API BOOL DeviceIoControl(HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer,
	                               DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize,
	                               LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped);

	WINPR_API HANDLE CreateIoCompletionPort(HANDLE FileHandle, HANDLE ExistingCompletionPort,
	                                        ULONG_PTR CompletionKey,
	                                        DWORD NumberOfConcurrentThreads);

	WINPR_API BOOL GetQueuedCompletionStatus(HANDLE CompletionPort,
	                                         LPDWORD lpNumberOfBytesTransferred,
	                                         PULONG_PTR lpCompletionKey, LPOVERLAPPED* lpOverlapped,
	                                         DWORD dwMilliseconds);

	WINPR_API BOOL GetQueuedCompletionStatusEx(HANDLE CompletionPort,
	                                           LPOVERLAPPED_ENTRY lpCompletionPortEntries,
	                                           ULONG ulCount, PULONG ulNumEntriesRemoved,
	                                           DWORD dwMilliseconds, BOOL fAlertable);

	WINPR_API BOOL PostQueuedCompletionStatus(HANDLE CompletionPort,
	                                          DWORD dwNumberOfBytesTransferred,
	                                          ULONG_PTR dwCompletionKey, LPOVERLAPPED lpOverlapped);

	WINPR_API BOOL CancelIo(HANDLE hFile);

	WINPR_API BOOL CancelIoEx(HANDLE hFile, LPOVERLAPPED lpOverlapped);

	WINPR_API BOOL CancelSynchronousIo(HANDLE hThread);

#ifdef __cplusplus
}
#endif

#define DEVICE_TYPE ULONG

#define FILE_DEVICE_BEEP 0x00000001
#define FILE_DEVICE_CD_ROM 0x00000002
#define FILE_DEVICE_CD_ROM_FILE_SYSTEM 0x00000003
#define FILE_DEVICE_CONTROLLER 0x00000004
#define FILE_DEVICE_DATALINK 0x00000005
#define FILE_DEVICE_DFS 0x00000006
#define FILE_DEVICE_DISK 0x00000007
#define FILE_DEVICE_DISK_FILE_SYSTEM 0x00000008
#define FILE_DEVICE_FILE_SYSTEM 0x00000009
#define FILE_DEVICE_INPORT_PORT 0x0000000a
#define FILE_DEVICE_KEYBOARD 0x0000000b
#define FILE_DEVICE_MAILSLOT 0x0000000c
#define FILE_DEVICE_MIDI_IN 0x0000000d
#define FILE_DEVICE_MIDI_OUT 0x0000000e
#define FILE_DEVICE_MOUSE 0x0000000f
#define FILE_DEVICE_MULTI_UNC_PROVIDER 0x00000010
#define FILE_DEVICE_NAMED_PIPE 0x00000011
#define FILE_DEVICE_NETWORK 0x00000012
#define FILE_DEVICE_NETWORK_BROWSER 0x00000013
#define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014
#define FILE_DEVICE_NULL 0x00000015
#define FILE_DEVICE_PARALLEL_PORT 0x00000016
#define FILE_DEVICE_PHYSICAL_NETCARD 0x00000017
#define FILE_DEVICE_PRINTER 0x00000018
#define FILE_DEVICE_SCANNER 0x00000019
#define FILE_DEVICE_SERIAL_MOUSE_PORT 0x0000001a
#define FILE_DEVICE_SERIAL_PORT 0x0000001b
#define FILE_DEVICE_SCREEN 0x0000001c
#define FILE_DEVICE_SOUND 0x0000001d
#define FILE_DEVICE_STREAMS 0x0000001e
#define FILE_DEVICE_TAPE 0x0000001f
#define FILE_DEVICE_TAPE_FILE_SYSTEM 0x00000020
#define FILE_DEVICE_TRANSPORT 0x00000021
#define FILE_DEVICE_UNKNOWN 0x00000022
#define FILE_DEVICE_VIDEO 0x00000023
#define FILE_DEVICE_VIRTUAL_DISK 0x00000024
#define FILE_DEVICE_WAVE_IN 0x00000025
#define FILE_DEVICE_WAVE_OUT 0x00000026
#define FILE_DEVICE_8042_PORT 0x00000027
#define FILE_DEVICE_NETWORK_REDIRECTOR 0x00000028
#define FILE_DEVICE_BATTERY 0x00000029
#define FILE_DEVICE_BUS_EXTENDER 0x0000002a
#define FILE_DEVICE_MODEM 0x0000002b
#define FILE_DEVICE_VDM 0x0000002c
#define FILE_DEVICE_MASS_STORAGE 0x0000002d
#define FILE_DEVICE_SMB 0x0000002e
#define FILE_DEVICE_KS 0x0000002f
#define FILE_DEVICE_CHANGER 0x00000030
#define FILE_DEVICE_SMARTCARD 0x00000031
#define FILE_DEVICE_ACPI 0x00000032
#define FILE_DEVICE_DVD 0x00000033
#define FILE_DEVICE_FULLSCREEN_VIDEO 0x00000034
#define FILE_DEVICE_DFS_FILE_SYSTEM 0x00000035
#define FILE_DEVICE_DFS_VOLUME 0x00000036
#define FILE_DEVICE_SERENUM 0x00000037
#define FILE_DEVICE_TERMSRV 0x00000038
#define FILE_DEVICE_KSEC 0x00000039
#define FILE_DEVICE_FIPS 0x0000003A
#define FILE_DEVICE_INFINIBAND 0x0000003B
#define FILE_DEVICE_VMBUS 0x0000003E
#define FILE_DEVICE_CRYPT_PROVIDER 0x0000003F
#define FILE_DEVICE_WPD 0x00000040
#define FILE_DEVICE_BLUETOOTH 0x00000041
#define FILE_DEVICE_MT_COMPOSITE 0x00000042
#define FILE_DEVICE_MT_TRANSPORT 0x00000043
#define FILE_DEVICE_BIOMETRIC 0x00000044
#define FILE_DEVICE_PMI 0x00000045

#define CTL_CODE(DeviceType, Function, Method, Access) \
	(((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))

#define DEVICE_TYPE_FROM_CTL_CODE(ctrlCode) (((DWORD)(ctrlCode & 0xFFFF0000)) >> 16)

#define METHOD_FROM_CTL_CODE(ctrlCode) ((DWORD)(ctrlCode & 3))

#define METHOD_BUFFERED 0
#define METHOD_IN_DIRECT 1
#define METHOD_OUT_DIRECT 2
#define METHOD_NEITHER 3

#define FILE_ANY_ACCESS 0
#define FILE_SPECIAL_ACCESS (FILE_ANY_ACCESS)
#define FILE_READ_ACCESS (0x0001)
#define FILE_WRITE_ACCESS (0x0002)

/*
 * WinPR I/O Manager Custom API
 */

typedef HANDLE PDRIVER_OBJECT_EX;
typedef HANDLE PDEVICE_OBJECT_EX;

WINPR_API NTSTATUS _IoCreateDeviceEx(PDRIVER_OBJECT_EX DriverObject, ULONG DeviceExtensionSize,
                                     PUNICODE_STRING DeviceName, DEVICE_TYPE DeviceType,
                                     ULONG DeviceCharacteristics, BOOLEAN Exclusive,
                                     PDEVICE_OBJECT_EX* DeviceObject);

WINPR_API VOID _IoDeleteDeviceEx(PDEVICE_OBJECT_EX DeviceObject);

#endif

#ifdef _UWP

#ifdef __cplusplus
extern "C"
{
#endif

	WINPR_API BOOL GetOverlappedResult(HANDLE hFile, LPOVERLAPPED lpOverlapped,
	                                   LPDWORD lpNumberOfBytesTransferred, BOOL bWait);

	WINPR_API BOOL DeviceIoControl(HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer,
	                               DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize,
	                               LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped);

	WINPR_API HANDLE CreateIoCompletionPort(HANDLE FileHandle, HANDLE ExistingCompletionPort,
	                                        ULONG_PTR CompletionKey,
	                                        DWORD NumberOfConcurrentThreads);

	WINPR_API BOOL GetQueuedCompletionStatus(HANDLE CompletionPort,
	                                         LPDWORD lpNumberOfBytesTransferred,
	                                         PULONG_PTR lpCompletionKey, LPOVERLAPPED* lpOverlapped,
	                                         DWORD dwMilliseconds);

	WINPR_API BOOL GetQueuedCompletionStatusEx(HANDLE CompletionPort,
	                                           LPOVERLAPPED_ENTRY lpCompletionPortEntries,
	                                           ULONG ulCount, PULONG ulNumEntriesRemoved,
	                                           DWORD dwMilliseconds, BOOL fAlertable);

	WINPR_API BOOL PostQueuedCompletionStatus(HANDLE CompletionPort,
	                                          DWORD dwNumberOfBytesTransferred,
	                                          ULONG_PTR dwCompletionKey, LPOVERLAPPED lpOverlapped);

	WINPR_API BOOL CancelIo(HANDLE hFile);

	WINPR_API BOOL CancelSynchronousIo(HANDLE hThread);

#ifdef __cplusplus
}
#endif

#endif

/**
 * Extended API
 */

#define ACCESS_FROM_CTL_CODE(ctrlCode) ((DWORD)((ctrlCode >> 14) & 0x3))
#define FUNCTION_FROM_CTL_CODE(ctrlCode) ((DWORD)((ctrlCode >> 2) & 0xFFF))

#endif /* WINPR_IO_H */
