internal static SMB1Command GetNTCreateResponse(SMB1Header header, NTCreateAndXRequest request, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
bool isExtended = (request.Flags & NTCreateFlags.NT_CREATE_REQUEST_EXTENDED_RESPONSE) > 0;
string path = request.FileName;
FileAccess createAccess = NTFileStoreHelper.ToCreateFileAccess(request.DesiredAccess, request.CreateDisposition);
if (share is FileSystemShare)
{
if (!((FileSystemShare)share).HasAccess(session.SecurityContext, path, createAccess))
{
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.FileName, session.UserName);
header.Status = NTStatus.STATUS_ACCESS_DENIED;
return(new ErrorResponse(request.CommandName));
}
}
object handle;
FileStatus fileStatus;
NTStatus createStatus = share.FileStore.CreateFile(out handle, out fileStatus, path, request.DesiredAccess, request.ShareAccess, request.CreateDisposition, request.CreateOptions, session.SecurityContext);
if (createStatus != NTStatus.STATUS_SUCCESS)
{
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. NTStatus: '{2}'.", share.Name, path, createStatus);
header.Status = createStatus;
return(new ErrorResponse(request.CommandName));
}
state.LogToServer(Severity.Verbose, "Create: Opened '{0}{1}'.", share.Name, path);
ushort?fileID = session.AddOpenFile(header.TID, path, handle);
if (!fileID.HasValue)
{
share.FileStore.CloseFile(handle);
header.Status = NTStatus.STATUS_TOO_MANY_OPENED_FILES;
return(new ErrorResponse(request.CommandName));
}
if (share is NamedPipeShare)
{
if (isExtended)
{
return(CreateResponseExtendedForNamedPipe(fileID.Value, FileStatus.FILE_OPENED));
}
else
{
return(CreateResponseForNamedPipe(fileID.Value, FileStatus.FILE_OPENED));
}
}
else // FileSystemShare
{
FileNetworkOpenInformation fileInfo = NTFileStoreHelper.GetNetworkOpenInformation(share.FileStore, handle);
if (isExtended)
{
NTCreateAndXResponseExtended response = CreateResponseExtendedFromFileInformation(fileInfo, fileID.Value, fileStatus);
if ((request.Flags & NTCreateFlags.NT_CREATE_REQUEST_OPBATCH) > 0)
{
response.OpLockLevel = OpLockLevel.BatchOpLockGranted;
}
return(response);
}
else
{
NTCreateAndXResponse response = CreateResponseFromFileInformation(fileInfo, fileID.Value, fileStatus);
if ((request.Flags & NTCreateFlags.NT_CREATE_REQUEST_OPBATCH) > 0)
{
response.OpLockLevel = OpLockLevel.BatchOpLockGranted;
}
return(response);
}
}
}
internal static SMB1Command GetOpenAndXResponse(SMB1Header header, OpenAndXRequest request, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
bool isExtended = (request.Flags & OpenFlags.SMB_OPEN_EXTENDED_RESPONSE) > 0;
string path = request.FileName;
if (!path.StartsWith(@"\"))
{
path = @"\" + path;
}
AccessMask desiredAccess;
ShareAccess shareAccess;
CreateDisposition createDisposition;
try
{
desiredAccess = ToAccessMask(request.AccessMode.AccessMode);
shareAccess = ToShareAccess(request.AccessMode.SharingMode);
createDisposition = ToCreateDisposition(request.OpenMode);
}
catch (ArgumentException)
{
// Invalid input according to MS-CIFS
header.Status = NTStatus.STATUS_OS2_INVALID_ACCESS;
return(new ErrorResponse(request.CommandName));
}
CreateOptions createOptions = ToCreateOptions(request.AccessMode);
FileAccess createAccess = NTFileStoreHelper.ToCreateFileAccess(desiredAccess, createDisposition);
if (share is FileSystemShare)
{
if (!((FileSystemShare)share).HasAccess(session.SecurityContext, path, createAccess))
{
state.LogToServer(Severity.Verbose, "OpenAndX: Opening '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.FileName, session.UserName);
header.Status = NTStatus.STATUS_ACCESS_DENIED;
return(new ErrorResponse(request.CommandName));
}
}
object handle;
FileStatus fileStatus;
header.Status = share.FileStore.CreateFile(out handle, out fileStatus, path, desiredAccess, 0, shareAccess, createDisposition, createOptions, session.SecurityContext);
if (header.Status != NTStatus.STATUS_SUCCESS)
{
state.LogToServer(Severity.Verbose, "OpenAndX: Opening '{0}{1}' failed. NTStatus: {2}.", share.Name, path, header.Status);
return(new ErrorResponse(request.CommandName));
}
FileAccess fileAccess = ToFileAccess(request.AccessMode.AccessMode);
ushort? fileID = session.AddOpenFile(header.TID, share.Name, path, handle, fileAccess);
if (!fileID.HasValue)
{
share.FileStore.CloseFile(handle);
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. Too many open files.", share.Name, path);
header.Status = NTStatus.STATUS_TOO_MANY_OPENED_FILES;
return(new ErrorResponse(request.CommandName));
}
state.LogToServer(Severity.Verbose, "OpenAndX: Opened '{0}{1}'. (UID: {2}, TID: {3}, FID: {4})", share.Name, path, header.UID, header.TID, fileID.Value);
OpenResult openResult = ToOpenResult(fileStatus);
if (share is NamedPipeShare)
{
if (isExtended)
{
return(CreateResponseExtendedForNamedPipe(fileID.Value, openResult));
}
else
{
return(CreateResponseForNamedPipe(fileID.Value, openResult));
}
}
else // FileSystemShare
{
FileNetworkOpenInformation fileInfo = NTFileStoreHelper.GetNetworkOpenInformation(share.FileStore, handle);
if (isExtended)
{
return(CreateResponseExtendedFromFileInfo(fileInfo, fileID.Value, openResult));
}
else
{
return(CreateResponseFromFileInfo(fileInfo, fileID.Value, openResult));
}
}
}
internal static SMB1Command GetNTCreateResponse(SMB1Header header, NTCreateAndXRequest request, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
bool isExtended = (request.Flags & NTCreateFlags.NT_CREATE_REQUEST_EXTENDED_RESPONSE) > 0;
string path = request.FileName;
if (!path.StartsWith(@"\"))
{
path = @"\" + path;
}
FileAccess createAccess = NTFileStoreHelper.ToCreateFileAccess(request.DesiredAccess, request.CreateDisposition);
if (share is FileSystemShare)
{
if (!((FileSystemShare)share).HasAccess(session.SecurityContext, path, createAccess))
{
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.FileName, session.UserName);
header.Status = NTStatus.STATUS_ACCESS_DENIED;
return(new ErrorResponse(request.CommandName));
}
}
object handle;
FileStatus fileStatus;
FileAttributes fileAttributes = ToFileAttributes(request.ExtFileAttributes);
// GetFileInformation/FileNetworkOpenInformation requires FILE_READ_ATTRIBUTES
AccessMask desiredAccess = request.DesiredAccess | (AccessMask)FileAccessMask.FILE_READ_ATTRIBUTES;
NTStatus createStatus = share.FileStore.CreateFile(out handle, out fileStatus, path, desiredAccess, fileAttributes, request.ShareAccess, request.CreateDisposition, request.CreateOptions, session.SecurityContext);
if (createStatus != NTStatus.STATUS_SUCCESS)
{
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. NTStatus: {2}.", share.Name, path, createStatus);
header.Status = createStatus;
return(new ErrorResponse(request.CommandName));
}
FileAccess fileAccess = NTFileStoreHelper.ToFileAccess(desiredAccess);
ushort? fileID = session.AddOpenFile(header.TID, share.Name, path, handle, fileAccess);
if (!fileID.HasValue)
{
share.FileStore.CloseFile(handle);
state.LogToServer(Severity.Verbose, "Create: Opening '{0}{1}' failed. Too many open files.", share.Name, path);
header.Status = NTStatus.STATUS_TOO_MANY_OPENED_FILES;
return(new ErrorResponse(request.CommandName));
}
string fileAccessString = fileAccess.ToString().Replace(", ", "|");
string shareAccessString = request.ShareAccess.ToString().Replace(", ", "|");
state.LogToServer(Severity.Verbose, "Create: Opened '{0}{1}', FileAccess: {2}, ShareAccess: {3}. (UID: {4}, TID: {5}, FID: {6})", share.Name, path, fileAccessString, shareAccessString, header.UID, header.TID, fileID.Value);
if (share is NamedPipeShare)
{
if (isExtended)
{
return(CreateResponseExtendedForNamedPipe(fileID.Value, FileStatus.FILE_OPENED));
}
else
{
return(CreateResponseForNamedPipe(fileID.Value, FileStatus.FILE_OPENED));
}
}
else // FileSystemShare
{
FileNetworkOpenInformation fileInfo = NTFileStoreHelper.GetNetworkOpenInformation(share.FileStore, handle);
if (isExtended)
{
NTCreateAndXResponseExtended response = CreateResponseExtendedFromFileInformation(fileInfo, fileID.Value, fileStatus);
return(response);
}
else
{
NTCreateAndXResponse response = CreateResponseFromFileInformation(fileInfo, fileID.Value, fileStatus);
return(response);
}
}
}