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NTFileSystemHelper: Added OpenFile helper method

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Tal Aloni 2017-02-02 22:53:40 +02:00
parent 2460401955
commit b24345b5ca
3 changed files with 55 additions and 60 deletions
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47
SMBLibrary/Server/Helpers/NTFileSystemHelper.cs
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@ -256,6 +256,53 @@ namespace SMBLibrary.Server
}
}
public static NTStatus OpenFile(out Stream stream, IFileSystem fileSystem, string path, FileAccess fileAccess, ShareAccess shareAccess, bool buffered, ConnectionState state)
{
stream = null;
FileShare fileShare = NTFileSystemHelper.ToFileShare(shareAccess);
state.LogToServer(Severity.Verbose, "OpenFile: Opening '{0}', Access={1}, Share={2}, Buffered={3}", path, fileAccess, fileShare, buffered);
try
{
stream = fileSystem.OpenFile(path, FileMode.Open, fileAccess, fileShare);
}
catch (DirectoryNotFoundException)
{
state.LogToServer(Severity.Debug, "OpenFile: Cannot open '{0}'. Directory not found.", path);
return NTStatus.STATUS_NO_SUCH_FILE;
}
catch (FileNotFoundException)
{
state.LogToServer(Severity.Debug, "OpenFile: Cannot open '{0}'. File not found.", path);
return NTStatus.STATUS_NO_SUCH_FILE;
}
catch (IOException ex)
{
ushort errorCode = IOExceptionHelper.GetWin32ErrorCode(ex);
if (errorCode == (ushort)Win32Error.ERROR_SHARING_VIOLATION)
{
state.LogToServer(Severity.Debug, "OpenFile: Cannot open '{0}'. Sharing violation.", path);
return NTStatus.STATUS_SHARING_VIOLATION;
}
else
{
state.LogToServer(Severity.Debug, "OpenFile: Cannot open '{0}'. Data Error.", path);
return NTStatus.STATUS_DATA_ERROR;
}
}
catch (UnauthorizedAccessException)
{
state.LogToServer(Severity.Debug, "OpenFile: Cannot open '{0}'. Access Denied.", path);
return NTStatus.STATUS_ACCESS_DENIED;
}
if (buffered)
{
stream = new PrefetchedStream(stream);
}
return NTStatus.STATUS_SUCCESS;
}
public static NTStatus ReadFile(out byte[] data, OpenFileObject openFile, long offset, int maxCount, ConnectionState state)
{
data = null;