/*
 * Copyright (c) 2016 Daniel Boland <dboland@xs4all.nl>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of the copyright holders 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 HOLDERS 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.
 *
 */

#include <winbase.h>

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

BOOL 
pdo_close(WIN_VNODE *Node)
{
	BOOL bResult = FALSE;

	if (Node->Handle == INVALID_HANDLE_VALUE){	/* DEV_TYPE_ROUTE (route.exe) */
		bResult = TRUE;
	}else if (!CloseHandle(Node->Handle)){
		WIN_ERR("pdo_close(%d): %s\n", Node->Handle, win_strerror(GetLastError()));
	}else{
		bResult = TRUE;
	}
	ZeroMemory(Node, sizeof(WIN_VNODE));
	return(bResult);
}
BOOL 
pdo_read(WIN_TASK *Task, WIN_DEVICE *Device, LPSTR Buffer, LONG Size, DWORD *Result)
{
	BOOL bResult = FALSE;

	switch (Device->DeviceType){
		case DEV_TYPE_PTY:
		case DEV_TYPE_CONSOLE:
			bResult = input_read(Task, Device->Input, Buffer, Size, Result);
			break;
		case DEV_TYPE_ROUTE:
			bResult = route_read(Device, Buffer, Size, Result);
			break;
		case DEV_TYPE_RANDOM:			/* pwgen.exe */
		case DEV_TYPE_URANDOM:
			bResult = rand_read(Buffer, Size, Result);
			break;
		default:
			SetLastError(ERROR_BAD_DEVICE);
	}
	return(bResult);
}
BOOL 
pdo_write(WIN_DEVICE *Device, LPCSTR Buffer, DWORD Size, DWORD *Result)
{
	BOOL bResult = FALSE;
	OVERLAPPED ovl = {0, 0, 0, 0, __MailEvent};

	switch (Device->DeviceType){
		case DEV_TYPE_PTY:
		case DEV_TYPE_CONSOLE:
			bResult = screen_write(Device->Output, Buffer, Size, Result);
			break;
		case DEV_TYPE_ROUTE:
			bResult = route_write(Device, Buffer, Size, Result);
			break;
		default:
			SetLastError(ERROR_BAD_DEVICE);
	}
	return(bResult);
}
BOOL 
pdo_fsync(WIN_DEVICE *Device)
{
	BOOL bResult = FALSE;

	switch (Device->DeviceType){
		case DEV_TYPE_PTY:
		case DEV_TYPE_CONSOLE:		/* less.exe */
			bResult = FlushConsoleInputBuffer(Device->Input);
			break;
		default:
			SetLastError(ERROR_BAD_DEVICE);
	}
	return(bResult);
}
BOOL 
pdo_revoke(WIN_DEVICE *Device)
{
	BOOL bResult = FALSE;

	switch (Device->DeviceType){
		case DEV_TYPE_PTY:
		case DEV_TYPE_CONSOLE:
			bResult = char_revoke(Device);
			break;
		case DEV_TYPE_COM:
			bResult = TRUE;
			break;
		default:
			SetLastError(ERROR_BAD_DEVICE);
	}
	return(bResult);
}
BOOL 
pdo_unlink(WIN_NAMEIDATA *Path)
{
	BOOL bResult = FALSE;

	if (*Path->Last == '\\'){		/* GNU conftest.exe */
		SetLastError(ERROR_BAD_PATHNAME);
	}else{
		bResult = DeleteFileW(Path->Resolved);
	}
	return(bResult);
}