/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 *
 *************************************************************/


#include "macros.h"

#define	WININIT_FILENAME	"wininit.ini"
#define RENAME_SECTION		"rename"

IMPLEMENT_THUNK( kernel32, WINDOWS, BOOL, WINAPI, MoveFileExA, ( LPCSTR lpExistingFileNameA, LPCSTR lpNewFileNameA, DWORD dwFlags ) )
{
	BOOL	fSuccess = FALSE;	// assume failure

	// Windows 9x has a special mechanism to move files after reboot

	if ( dwFlags & MOVEFILE_DELAY_UNTIL_REBOOT )
	{
		CHAR	szExistingFileNameA[MAX_PATH];
		CHAR	szNewFileNameA[MAX_PATH] = "NUL";

		// Path names in WININIT.INI must be in short path name form

		if (
			GetShortPathNameA( lpExistingFileNameA, szExistingFileNameA, MAX_PATH ) &&
			(!lpNewFileNameA || GetShortPathNameA( lpNewFileNameA, szNewFileNameA, MAX_PATH ))
			)
		{
			CHAR	szBuffer[32767];	// The buffer size must not exceed 32K
			DWORD	dwBufLen = GetPrivateProfileSectionA( RENAME_SECTION, szBuffer, elementsof(szBuffer), WININIT_FILENAME );

			CHAR	szRename[MAX_PATH];	// This is enough for at most to times 67 characters
			strcpy( szRename, szNewFileNameA );
			strcat( szRename, "=" );
			strcat( szRename, szExistingFileNameA );
			size_t	lnRename = strlen(szRename);

			if ( dwBufLen + lnRename + 2 <= elementsof(szBuffer) )
			{
				CopyMemory( &szBuffer[dwBufLen], szRename, lnRename );
				szBuffer[dwBufLen + lnRename ] = 0;
				szBuffer[dwBufLen + lnRename + 1 ] = 0;

				fSuccess = WritePrivateProfileSectionA( RENAME_SECTION, szBuffer, WININIT_FILENAME );
			}
			else
				SetLastError( ERROR_BUFFER_OVERFLOW );
		}
	}
	else
	{

		fSuccess = MoveFileA( lpExistingFileNameA, lpNewFileNameA );

		if ( !fSuccess && 0 != (dwFlags & (MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING)) )
		{
			BOOL	bFailIfExist = 0 == (dwFlags & MOVEFILE_REPLACE_EXISTING);

			fSuccess = CopyFileA( lpExistingFileNameA, lpNewFileNameA, bFailIfExist );

			// In case of successful copy do not return FALSE if delete fails.
			// Error detection is done by GetLastError()

			if ( fSuccess )
			{
				SetLastError( NO_ERROR );
				DeleteFileA( lpExistingFileNameA );
			}
		}

	}

	return fSuccess;
}