580 lines
14 KiB
C++
580 lines
14 KiB
C++
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/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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cleanup.cpp
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Abstract:
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This file implements the BITS server extensions cleanup worker
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--*/
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#include "precomp.h"
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const UINT64 NanoSec100PerSec = 10000000; //no of 100 nanosecs per second
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inline UINT64 FILETIMEToUINT64( const FILETIME & FileTime )
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{
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ULARGE_INTEGER LargeInteger;
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LargeInteger.HighPart = FileTime.dwHighDateTime;
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LargeInteger.LowPart = FileTime.dwLowDateTime;
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return LargeInteger.QuadPart;
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};
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class CleanupWorker
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{
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public:
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CleanupWorker( HWND hwnd, const WCHAR* Path, const WCHAR *WorkItemName,
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const WCHAR *GuidString );
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~CleanupWorker();
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void DoIt();
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private:
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HWND m_hwnd;
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const WCHAR * m_Path;
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const WCHAR * m_WorkItemName;
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const WCHAR * m_GuidString;
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const WCHAR * m_ADSIPath;
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IADs * m_VDir;
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BSTR m_VDirPath;
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BSTR m_SessionDirectory;
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BSTR m_UNCUsername;
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BSTR m_UNCPassword;
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UINT64 m_CleanupThreshold;
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VARIANT m_vt;
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HANDLE m_FindHandle;
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HANDLE m_UserToken;
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WCHAR * BuildPath( const WCHAR * Dir, const WCHAR *Sub );
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BSTR GetBSTRProp( BSTR PropName );
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void LogonIfRequired();
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void PollKill();
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void RemoveConnectionsFromTree(
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const WCHAR * DirectoryPath,
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bool IsConnectionDirectory );
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void RemoveConnection( const WCHAR * ConnectionDirectory );
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};
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CleanupWorker::CleanupWorker(
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HWND hwnd,
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const WCHAR* Path,
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const WCHAR* WorkItemName,
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const WCHAR* GuidString ) :
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m_hwnd( hwnd ),
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m_Path( Path ),
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m_WorkItemName( WorkItemName ),
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m_GuidString( GuidString ),
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m_ADSIPath( NULL ),
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m_VDir( NULL ),
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m_VDirPath( NULL ),
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m_SessionDirectory( NULL ),
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m_CleanupThreshold( 0 ),
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m_UNCUsername( NULL ),
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m_UNCPassword( NULL ),
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m_UserToken( NULL )
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{
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VariantInit( &m_vt );
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}
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CleanupWorker::~CleanupWorker()
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{
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if ( m_UserToken )
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{
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SetThreadToken( NULL, NULL );
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CloseHandle( m_UserToken );
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}
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delete m_ADSIPath;
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SysFreeString( m_VDirPath );
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SysFreeString( m_SessionDirectory );
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SysFreeString( m_UNCUsername );
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SysFreeString( m_UNCPassword );
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}
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void
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CleanupWorker::RemoveConnection( const WCHAR * ConnectionDirectory )
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{
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UINT64 LatestTime = 0;
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HANDLE FindHandle = INVALID_HANDLE_VALUE;
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WCHAR *SearchPath = NULL;
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WCHAR *FileName = NULL;
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try
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{
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SearchPath = BuildPath( ConnectionDirectory, L"*" );
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WIN32_FIND_DATA FindData;
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FindHandle =
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FindFirstFile(
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SearchPath,
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&FindData
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);
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if ( INVALID_HANDLE_VALUE == FindHandle )
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throw ComError( HRESULT_FROM_WIN32( GetLastError() ) );
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bool FoundFile = false;
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do
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{
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if ( FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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continue;
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FoundFile = true;
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UINT64 CreationTime = FILETIMEToUINT64( FindData.ftCreationTime );
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UINT64 LastWriteTime = FILETIMEToUINT64( FindData.ftLastWriteTime );
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LatestTime = max( LatestTime, max( CreationTime, LastWriteTime ) );
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}
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while ( FindNextFile( FindHandle, &FindData ) );
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FindClose( FindHandle );
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FindHandle = INVALID_HANDLE_VALUE;
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FILETIME ftCurrentTime;
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GetSystemTimeAsFileTime( &ftCurrentTime );
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UINT64 CurrentTime = FILETIMEToUINT64( ftCurrentTime );
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if ( FoundFile &&
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( 0xFFFFFFFF - LatestTime > m_CleanupThreshold ) &&
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( LatestTime + m_CleanupThreshold < CurrentTime ) )
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{
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FindHandle =
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FindFirstFile(
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SearchPath,
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&FindData
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);
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if ( INVALID_HANDLE_VALUE == FindHandle )
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throw ComError( HRESULT_FROM_WIN32( GetLastError() ) );
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do
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{
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if ( FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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continue;
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FileName = BuildPath( ConnectionDirectory, FindData.cFileName );
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DeleteFile( FileName );
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delete FileName;
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FileName = NULL;
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}
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while ( FindNextFile( FindHandle, &FindData ) );
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FindClose( FindHandle );
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FindHandle = INVALID_HANDLE_VALUE;
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}
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RemoveDirectory( ConnectionDirectory );
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}
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catch( ComError Error )
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{
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if ( INVALID_HANDLE_VALUE != FindHandle )
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FindClose( FindHandle );
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delete SearchPath;
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delete FileName;
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throw;
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}
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if ( INVALID_HANDLE_VALUE != FindHandle )
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FindClose( FindHandle );
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delete SearchPath;
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delete FileName;
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}
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void
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CleanupWorker::RemoveConnectionsFromTree(
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const WCHAR * DirectoryPath,
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bool IsConnectionDirectory )
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{
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WCHAR *ConnectionDir = NULL;
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HANDLE FindHandle = INVALID_HANDLE_VALUE;
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WCHAR *SearchString = NULL;
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WCHAR *NextSearchPath = NULL;
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try
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{
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// Look for BITS-Sessions directory in connection tree
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SearchString = BuildPath( DirectoryPath, L"*" );
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WIN32_FIND_DATA FindData;
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FindHandle =
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FindFirstFile(
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SearchString,
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&FindData );
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if ( INVALID_HANDLE_VALUE == FindHandle )
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return;
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do
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{
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PollKill();
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if ( !(FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) )
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continue;
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if ( _wcsicmp( L".", FindData.cFileName ) == 0 )
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continue;
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if ( _wcsicmp( L"..", FindData.cFileName ) == 0 )
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continue;
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if ( IsConnectionDirectory )
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{
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GUID Guid;
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if (SUCCEEDED( IIDFromString( FindData.cFileName, &Guid ) ) )
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{
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NextSearchPath = BuildPath( DirectoryPath, FindData.cFileName );
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RemoveConnection( NextSearchPath );
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delete NextSearchPath;
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NextSearchPath = NULL;
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}
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}
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else
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{
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if ( _wcsicmp( m_SessionDirectory, FindData.cFileName ) == 0 )
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{
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NextSearchPath = BuildPath( DirectoryPath, FindData.cFileName );
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RemoveConnectionsFromTree( NextSearchPath, true );
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// Mark this as the connection directory so it
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// will be closed after the search handles are closed.
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ConnectionDir = NextSearchPath;
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NextSearchPath = NULL;
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}
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else
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{
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// just another directory to recurse into
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NextSearchPath = BuildPath( DirectoryPath, FindData.cFileName );
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RemoveConnectionsFromTree( NextSearchPath, false );
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delete NextSearchPath;
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NextSearchPath = NULL;
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}
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}
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}
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while( FindNextFile( FindHandle, &FindData ) );
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if ( INVALID_HANDLE_VALUE != FindHandle )
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FindClose( FindHandle );
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delete SearchString;
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delete NextSearchPath;
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if ( ConnectionDir )
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{
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// The attempt to remove the directory will fail if
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// the directory still has valid connections
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RemoveDirectory( ConnectionDir );
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delete ConnectionDir;
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}
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}
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catch( ComError Error )
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{
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if ( INVALID_HANDLE_VALUE != FindHandle )
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FindClose( FindHandle );
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delete SearchString;
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delete NextSearchPath;
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delete ConnectionDir;
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throw;
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}
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}
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void
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CleanupWorker::PollKill()
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{
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MSG msg;
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while( PeekMessage(
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&msg,
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m_hwnd,
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0,
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0,
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PM_REMOVE ) )
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{
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if ( WM_QUIT == msg.message )
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throw ComError( (HRESULT)msg.wParam );
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TranslateMessage( &msg );
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DispatchMessage( &msg );
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}
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}
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WCHAR *
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CleanupWorker::BuildPath(
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const WCHAR *Dir,
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const WCHAR *Sub )
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{
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SIZE_T DirLen = wcslen( Dir );
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SIZE_T SubLen = wcslen( Sub );
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SIZE_T MaxStringSize = DirLen + SubLen + 2; // one slash, one terminator
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WCHAR *RetString = new WCHAR[ MaxStringSize ];
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if ( !RetString )
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throw ComError( E_OUTOFMEMORY );
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memcpy( RetString, Dir, sizeof(WCHAR) * (DirLen + 1) );
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WCHAR *p = RetString + DirLen;
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if ( p != RetString && *(p - 1) != L'\\' && *(p - 1) != L'/' )
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*p++ = L'\\';
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memcpy( p, Sub, sizeof(WCHAR) * ( SubLen + 1 ) );
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return RetString;
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}
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BSTR
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CleanupWorker::GetBSTRProp( BSTR PropName )
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{
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BSTR Retval;
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THROW_COMERROR( m_VDir->Get( PropName, &m_vt ) );
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THROW_COMERROR( VariantChangeType( &m_vt, &m_vt, 0, VT_BSTR ) );
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Retval = m_vt.bstrVal;
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m_vt.bstrVal = NULL;
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VariantClear( &m_vt );
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return Retval;
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}
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void
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CleanupWorker::LogonIfRequired()
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{
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// Don't logon if the path isn't a UNC path
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// or the user name is blank
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if ( ((WCHAR*)m_VDirPath)[0] != L'\\' ||
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((WCHAR*)m_VDirPath)[1] != L'\\' ||
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*(WCHAR*)m_UNCUsername == L'\0' )
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return; // no logon required
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// crack the user name into a user and domain
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WCHAR *UserName = (WCHAR*)m_UNCUsername;
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WCHAR *DomainName = NULL;
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WCHAR *p = UserName;
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while(*p != L'\0')
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{
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if(*p == L'\\')
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{
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*p = L'\0';
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p++;
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//
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// first part is domain
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// second is user.
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//
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DomainName = UserName;
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UserName = p;
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break;
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}
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p++;
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}
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if ( !LogonUser(
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UserName,
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DomainName,
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(WCHAR*)m_UNCPassword,
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|
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LOGON32_LOGON_BATCH,
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LOGON32_PROVIDER_DEFAULT,
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&m_UserToken ) )
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{
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if ( GetLastError() == ERROR_LOGON_TYPE_NOT_GRANTED )
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{
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||
|
|
|
||
|
|
if ( !LogonUser(
|
||
|
|
UserName,
|
||
|
|
DomainName,
|
||
|
|
(WCHAR*)m_UNCPassword,
|
||
|
|
LOGON32_LOGON_INTERACTIVE,
|
||
|
|
LOGON32_PROVIDER_DEFAULT,
|
||
|
|
&m_UserToken ) )
|
||
|
|
{
|
||
|
|
|
||
|
|
throw ComError( HRESULT_FROM_WIN32( GetLastError() ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if ( !ImpersonateLoggedOnUser( m_UserToken ) )
|
||
|
|
throw ComError( HRESULT_FROM_WIN32( GetLastError() ) );
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
CleanupWorker::DoIt()
|
||
|
|
{
|
||
|
|
|
||
|
|
m_ADSIPath = ConvertObjectPathToADSI( m_Path );
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
THROW_COMERROR( ADsGetObject( m_ADSIPath, __uuidof(*m_VDir), (void**)&m_VDir ) );
|
||
|
|
|
||
|
|
if ( m_GuidString )
|
||
|
|
{
|
||
|
|
|
||
|
|
BSTR BSTRGuid = GetBSTRProp( (BSTR)L"BITSCleanupWorkItemKey" );
|
||
|
|
int Result = wcscmp( (LPWSTR)BSTRGuid, m_GuidString );
|
||
|
|
|
||
|
|
SysFreeString( BSTRGuid );
|
||
|
|
|
||
|
|
if ( Result != 0 )
|
||
|
|
throw ComError( E_ADS_UNKNOWN_OBJECT );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
catch( ComError Error )
|
||
|
|
{
|
||
|
|
|
||
|
|
if ( ( Error.m_Hr == E_ADS_UNKNOWN_OBJECT ) ||
|
||
|
|
( Error.m_Hr == HRESULT_FROM_WIN32( ERROR_PATH_NOT_FOUND ) ) ||
|
||
|
|
( Error.m_Hr == E_ADS_PROPERTY_NOT_FOUND ) )
|
||
|
|
{
|
||
|
|
// Somehow the virtual directory was deleted, but the
|
||
|
|
// task scheduler work item wasn't. Try to delete it now.
|
||
|
|
|
||
|
|
ITaskScheduler *TaskScheduler;
|
||
|
|
if ( SUCCEEDED( ConnectToTaskScheduler( NULL, &TaskScheduler ) ) )
|
||
|
|
{
|
||
|
|
TaskScheduler->Delete( m_WorkItemName );
|
||
|
|
TaskScheduler->Release();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
throw;
|
||
|
|
}
|
||
|
|
|
||
|
|
THROW_COMERROR( m_VDir->Get( (BSTR)L"BITSUploadEnabled", &m_vt ) );
|
||
|
|
THROW_COMERROR( VariantChangeType( &m_vt, &m_vt, 0, VT_BOOL ) );
|
||
|
|
|
||
|
|
if ( !m_vt.boolVal ) // Uploads arn't enabled on this directory
|
||
|
|
return;
|
||
|
|
|
||
|
|
THROW_COMERROR( m_VDir->Get( (BSTR)L"BITSSessionTimeout", &m_vt ) );
|
||
|
|
THROW_COMERROR( VariantChangeType( &m_vt, &m_vt, 0, VT_BSTR ) );
|
||
|
|
|
||
|
|
if ( L'-' == *m_vt.bstrVal )
|
||
|
|
return; // do not run cleanup in this directory since cleanup has been disabled
|
||
|
|
|
||
|
|
UINT64 CleanupSeconds;
|
||
|
|
if ( 1 != swscanf( (WCHAR*)m_vt.bstrVal, L"%I64u", &CleanupSeconds ) )
|
||
|
|
return;
|
||
|
|
|
||
|
|
if ( CleanupSeconds > ( 0xFFFFFFFFFFFFFFFF / NanoSec100PerSec ) )
|
||
|
|
m_CleanupThreshold = 0xFFFFFFFFFFFFFFFF; // overflow case
|
||
|
|
else
|
||
|
|
m_CleanupThreshold = CleanupSeconds * NanoSec100PerSec;
|
||
|
|
|
||
|
|
m_VDirPath = GetBSTRProp( (BSTR)L"Path" );
|
||
|
|
m_SessionDirectory = GetBSTRProp( (BSTR)L"BITSSessionDirectory" );
|
||
|
|
m_UNCUsername = GetBSTRProp( (BSTR)L"UNCUserName" );
|
||
|
|
m_UNCPassword = GetBSTRProp( (BSTR)L"UNCPassword" );
|
||
|
|
|
||
|
|
LogonIfRequired();
|
||
|
|
|
||
|
|
RemoveConnectionsFromTree( (WCHAR*)m_VDirPath, false );
|
||
|
|
}
|
||
|
|
|
||
|
|
void Cleanup_RunDLLW(HWND hwndStub, HINSTANCE hAppInstance, LPWSTR lpszCmdLine, int nCmdShow )
|
||
|
|
{
|
||
|
|
int NumArgs;
|
||
|
|
|
||
|
|
LPWSTR * CommandArgs =
|
||
|
|
CommandLineToArgvW(
|
||
|
|
lpszCmdLine,
|
||
|
|
&NumArgs );
|
||
|
|
|
||
|
|
if ( !CommandArgs )
|
||
|
|
return;
|
||
|
|
|
||
|
|
|
||
|
|
if ( FAILED( CoInitializeEx( NULL, COINIT_MULTITHREADED ) ) )
|
||
|
|
return;
|
||
|
|
|
||
|
|
if ( NumArgs != 2 && NumArgs != 3 )
|
||
|
|
return;
|
||
|
|
|
||
|
|
LPWSTR Path = CommandArgs[0];
|
||
|
|
LPWSTR WorkItemName = CommandArgs[1];
|
||
|
|
LPWSTR GuidString = NumArgs == 3 ? CommandArgs[2] : NULL;
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
CleanupWorker Worker( hwndStub, Path, WorkItemName, GuidString );
|
||
|
|
Worker.DoIt();
|
||
|
|
}
|
||
|
|
catch( ComError Error )
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
CoUninitialize( );
|
||
|
|
GlobalFree( CommandArgs );
|
||
|
|
|
||
|
|
}
|
||
|
|
|