/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



#define _WIN32_WINDOWS 0x0410

#ifdef _MSC_VER
#pragma warning(push, 1) /* disable warnings within system headers */
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <msiquery.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif

#include <malloc.h>
#include <assert.h>

#ifdef UNICODE
#define _UNICODE
#define _tstring	wstring
#else
#define _tstring	string
#endif
#include <tchar.h>
#include <string>
#include <queue>
#include <stdio.h>

#include <systools/win32/uwinapi.h>
#include <../tools/seterror.hxx>

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

#ifdef DEBUG
inline void OutputDebugStringFormat( LPCTSTR pFormat, ... )
{
	_TCHAR	buffer[1024];
	va_list	args;

	va_start( args, pFormat );
	_vsntprintf( buffer, elementsof(buffer), pFormat, args );
	OutputDebugString( buffer );
}
#else
static inline void OutputDebugStringFormat( LPCTSTR, ... )
{
}
#endif

static std::_tstring GetMsiProperty( MSIHANDLE handle, const std::_tstring& sProperty )
{
	std::_tstring	result;
	TCHAR	szDummy[1] = TEXT("");
	DWORD	nChars = 0;

	if ( MsiGetProperty( handle, sProperty.c_str(), szDummy, &nChars ) == ERROR_MORE_DATA )
	{
		DWORD nBytes = ++nChars * sizeof(TCHAR);
		LPTSTR buffer = reinterpret_cast<LPTSTR>(_alloca(nBytes));
		ZeroMemory( buffer, nBytes );
		MsiGetProperty(handle, sProperty.c_str(), buffer, &nChars);
		result = buffer;			
	}

	return	result;
}
	
static inline bool IsSetMsiProperty(MSIHANDLE handle, const std::_tstring& sProperty)
{   
	std::_tstring value = GetMsiProperty(handle, sProperty);
	return (value.length() > 0);
}

static inline void UnsetMsiProperty(MSIHANDLE handle, const std::_tstring& sProperty)
{
	MsiSetProperty(handle, sProperty.c_str(), NULL);
}

static inline void SetMsiProperty(MSIHANDLE handle, const std::_tstring& sProperty)
{
	MsiSetProperty(handle, sProperty.c_str(), TEXT("1"));
}

static BOOL MoveFileEx9x( 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 chracters
			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 && GetLastError() != ERROR_ACCESS_DENIED &&
			0 != (dwFlags & (MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING)) )
		{
			BOOL	bFailIfExist = 0 == (dwFlags & MOVEFILE_REPLACE_EXISTING);

			fSuccess = CopyFileA( lpExistingFileNameA, lpNewFileNameA, bFailIfExist );

			if ( fSuccess )
				fSuccess = DeleteFileA( lpExistingFileNameA );
		}

	}

	return fSuccess;
}

static BOOL MoveFileExImpl( LPCSTR lpExistingFileNameA, LPCSTR lpNewFileNameA, DWORD dwFlags )
{
	if ( 0 > ((LONG)GetVersion())) // High order bit indicates Win 9x
		return MoveFileEx9x( lpExistingFileNameA, lpNewFileNameA, dwFlags );
	else
		return MoveFileExA( lpExistingFileNameA, lpNewFileNameA, dwFlags );
}

extern "C" UINT __stdcall IsOfficeRunning( MSIHANDLE handle )
{
	OSVERSIONINFO	osverinfo;
	osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx( &osverinfo );
    
    // renaming the vcl resource doesn't work reliable with OS >= Windows Vista
    if (osverinfo.dwMajorVersion < 6 )
    {
        std::_tstring sInstDir = GetMsiProperty( handle, TEXT("INSTALLLOCATION") );
        // Property empty -> no office installed
        if ( sInstDir.length() == 0 )
            return ERROR_SUCCESS;
//       std::_tstring sResourceDir = sInstDir + TEXT("Basis\\program\\resource\\");
        std::_tstring sResourceDir = sInstDir + TEXT("program\\resource\\");
        std::_tstring sPattern = sResourceDir + TEXT("vcl*.res");

//        std::_tstring mystr;
//        mystr = "IsOfficeRunning start. Checking file in dir: " + sResourceDir;
//        MessageBox( NULL, mystr.c_str(), "IsOfficeRunning", MB_OK );

        WIN32_FIND_DATA	aFindFileData;
        HANDLE	hFind = FindFirstFile( sPattern.c_str(), &aFindFileData );

        if ( IsValidHandle(hFind) )
        {
            BOOL	fSuccess = false;
            bool	fRenameSucceeded;

            do
            {
                std::_tstring	sResourceFile = sResourceDir + aFindFileData.cFileName;
                std::_tstring	sIntermediate = sResourceFile + TEXT(".tmp");

                fRenameSucceeded = MoveFileExImpl( sResourceFile.c_str(), sIntermediate.c_str(), MOVEFILE_REPLACE_EXISTING );
                if ( fRenameSucceeded )
                {
                    MoveFileExImpl( sIntermediate.c_str(), sResourceFile.c_str(), 0 );
                    fSuccess = FindNextFile( hFind, &aFindFileData );
                }
            } while ( fSuccess && fRenameSucceeded );

            if ( !fRenameSucceeded )
            {
                MsiSetProperty(handle, TEXT("OFFICERUNS"), TEXT("1"));
                SetMsiErrorCode( MSI_ERROR_OFFICE_IS_RUNNING );

//                mystr = "Office is running";
//                MessageBox( NULL, mystr.c_str(), "IsOfficeRunning", MB_OK );
            }

            FindClose( hFind );
        }
//        mystr = "IsOfficeRunning end";
//        MessageBox( NULL, mystr.c_str(), "IsOfficeRunning", MB_OK );
    }
    else
    {
        std::_tstring sOfficeInstallPath = GetMsiProperty(handle, TEXT("INSTALLLOCATION"));
        // Property empty -> no office installed
        if ( sOfficeInstallPath.length() == 0 )
            return ERROR_SUCCESS;
    
        std::_tstring sRenameSrc = sOfficeInstallPath + TEXT("program");
        std::_tstring sRenameDst = sOfficeInstallPath + TEXT("program_test");
    
        bool bSuccess = MoveFile( sRenameSrc.c_str(), sRenameDst.c_str() );
    
        if ( bSuccess )
        {
            MoveFile( sRenameDst.c_str(), sRenameSrc.c_str() );
        }
        else
        {
            DWORD  dwError = GetLastError();
            LPVOID lpMsgBuf;
            // When there is no program folder, there could be no running office
            if ( dwError == ERROR_FILE_NOT_FOUND )
                return ERROR_SUCCESS;
            if ( dwError == ERROR_PATH_NOT_FOUND )
                return ERROR_SUCCESS;
            
            // The destination folder should never exist, don't know what to do here
            if ( dwError == ERROR_ALREADY_EXISTS )
                return ERROR_SUCCESS;
            
            if ( FormatMessage( 
                FORMAT_MESSAGE_ALLOCATE_BUFFER | 
                FORMAT_MESSAGE_FROM_SYSTEM | 
                FORMAT_MESSAGE_IGNORE_INSERTS,
                NULL,
                GetLastError(),
                MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
                (LPTSTR) &lpMsgBuf,
                0,
                NULL ))
            {
                OutputDebugStringFormat( TEXT("Error Code %d: %s"), dwError, lpMsgBuf );
                LocalFree( lpMsgBuf );
            }
            else
                OutputDebugStringFormat( TEXT("Error Code %d: Unknown"), dwError );
            
            MsiSetProperty( handle, TEXT("OFFICERUNS"), TEXT("1") );
            SetMsiErrorCode( MSI_ERROR_OFFICE_IS_RUNNING );
        }
    }

	return ERROR_SUCCESS;
}