protected override string OnProcess(string sMessage) { sMessage = sMessage.Trim(); if (sMessage == "") return GetMessage(501, string.Format("{0} needs a parameter", Command)); string sFilePath = GetPath(sMessage); if (!ConnectionObject.FileSystemObject.FileExists(sFilePath)) { return GetMessage(550, string.Format("File \"{0}\" doesn't exist", sMessage)); } var socketData = new FtpDataSocket(ConnectionObject); if (!socketData.Loaded) { return GetMessage(425, "Unable to establish the data connection"); } SocketHelpers.Send(ConnectionObject.Socket, "150 Starting data transfer, please wait...\r\n", ConnectionObject.Encoding); IFile file = ConnectionObject.FileSystemObject.OpenFile(sFilePath, false); if (file == null) { return GetMessage(550, "Couldn't open file"); } // TYPE I, default if (ConnectionObject.DataType == DataType.Image) { var abBuffer = new byte[m_nBufferSize]; int nRead = file.Read(abBuffer, m_nBufferSize); while (nRead > 0 && socketData.Send(abBuffer, nRead)) { nRead = file.Read(abBuffer, m_nBufferSize); } } // TYPE A else if (ConnectionObject.DataType == DataType.Ascii) { int writeSize = SocketHelpers.CopyStreamAscii(file.BlobStream, socketData.Socket.GetStream(), m_nBufferSize); FtpServerMessageHandler.SendMessage(ConnectionObject.Id, string.Format("Use ascii type success, write {0} chars!", writeSize)); } else // mustn't reach { file.Close(); socketData.Close(); return GetMessage(451, "Error in transfer data: invalid data type."); } file.Close(); socketData.Close(); return GetMessage(226, "File download succeeded."); }
protected override string OnProcess(string sMessage) { sMessage = sMessage.Trim(); string[] asFiles = null; string[] asDirectories = null; // Get the file/dir to list string targetToList = GetPath(sMessage); // checks the file/dir name if (!FileNameHelpers.IsValid(targetToList)) { return GetMessage(501, string.Format("\"{0}\" is not a valid file/directory name", sMessage)); } // two vars indicating different list results bool targetIsFile = false; bool targetIsDir = false; // targetToList ends with '/', must be a directory if (targetToList.EndsWith(@"/")) { targetIsFile = false; if (ConnectionObject.FileSystemObject.DirectoryExists(targetToList)) targetIsDir = true; } else { // check whether the target to list is a directory if (ConnectionObject.FileSystemObject.DirectoryExists(FileNameHelpers.AppendDirTag(targetToList))) targetIsDir = true; // check whether the target to list is a file if (ConnectionObject.FileSystemObject.FileExists(targetToList)) targetIsFile = true; } if (targetIsFile) { asFiles = new string[1] { targetToList }; if (targetIsDir) asDirectories = new string[1] { FileNameHelpers.AppendDirTag(targetToList) }; } // list a directory else if (targetIsDir) { targetToList = FileNameHelpers.AppendDirTag(targetToList); asFiles = ConnectionObject.FileSystemObject.GetFiles(targetToList); asDirectories = ConnectionObject.FileSystemObject.GetDirectories(targetToList); } else { return GetMessage(550, string.Format("\"{0}\" not exists", sMessage)); } var socketData = new FtpDataSocket(ConnectionObject); if (!socketData.Loaded) { return GetMessage(425, "Unable to establish the data connection"); } // prepare to write response to data channel SocketHelpers.Send(ConnectionObject.Socket, string.Format("150 Opening data connection for {0}\r\n", Command), ConnectionObject.Encoding); // generate the response string sFileList = BuildReply(asFiles, asDirectories); // ToDo, send response according to ConnectionObject.DataType, i.e., Ascii or Binary socketData.Send(sFileList, Encoding.UTF8); socketData.Close(); return GetMessage(226, string.Format("{0} successful.", Command)); }
protected override string OnProcess(string sMessage) { sMessage = sMessage.Trim(); if (sMessage == "") return GetMessage(501, string.Format("{0} needs a parameter", Command)); string sFile = GetPath(sMessage); if (!FileNameHelpers.IsValid(sFile) || sFile.EndsWith(@"/")) { return GetMessage(553, string.Format("\"{0}\" is not a valid file name", sMessage)); } if (ConnectionObject.FileSystemObject.FileExists(sFile)) { return GetMessage(553, string.Format("File \"{0}\" already exists.", sMessage)); } var socketData = new FtpDataSocket(ConnectionObject); if (!socketData.Loaded) { return GetMessage(425, "Unable to establish the data connection"); } IFile file = ConnectionObject.FileSystemObject.OpenFile(sFile, true); if (file == null) { socketData.Close();// close data socket return GetMessage(550, "Couldn't open file"); } SocketHelpers.Send(ConnectionObject.Socket, GetMessage(150, "Opening connection for data transfer."), ConnectionObject.Encoding); string md5Value = string.Empty; // TYPE I, default if (ConnectionObject.DataType == DataType.Image) { // md5 hash function MD5 md5Hash = MD5.Create(); var abData = new byte[m_nBufferSize]; int nReceived = socketData.Receive(abData); while (nReceived > 0) { int writeSize = file.Write(abData, nReceived); // maybe error if (writeSize != nReceived) { file.Close(); socketData.Close(); return GetMessage(451, "Write data to Azure error!"); } md5Hash.TransformBlock(abData, 0, nReceived, null, 0); nReceived = socketData.Receive(abData); } md5Hash.TransformFinalBlock(new byte[1], 0, 0); md5Value = BytesToStr(md5Hash.Hash); } // TYPE A // won't compute md5, because read characters from client stream else if (ConnectionObject.DataType == DataType.Ascii) { int readSize = SocketHelpers.CopyStreamAscii(socketData.Socket.GetStream(), file.stream, m_nBufferSize); FtpServerMessageHandler.SendMessage(ConnectionObject.Id, string.Format("Use ascii type success, read {0} chars!", readSize)); } else { // mustn't reach file.Close(); socketData.Close(); return GetMessage(451, "Error in transfer data: invalid data type."); } // upload notification ConnectionObject.FileSystemObject.Log4Upload(sFile); file.Close(); socketData.Close(); // record md5 ConnectionObject.FileSystemObject.SetFileMd5(sFile, md5Value); return GetMessage(226, string.Format("{0} successful", Command)); }
protected override string OnProcess(string sMessage) { sMessage = sMessage.Trim(); // Get the dir to list string targetToList = GetPath(sMessage); // checks the dir name if (!FileNameHelpers.IsValid(targetToList)) { return GetMessage(501, string.Format("\"{0}\" is not a valid directory name", sMessage)); } // specify the directory tag targetToList = FileNameHelpers.AppendDirTag(targetToList); bool targetIsDir = ConnectionObject.FileSystemObject.DirectoryExists(targetToList); if (!targetIsDir) return GetMessage(550, string.Format("Directory \"{0}\" not exists", targetToList)); #region Generate response StringBuilder response = new StringBuilder(); string[] files = ConnectionObject.FileSystemObject.GetFiles(targetToList); string[] directories = ConnectionObject.FileSystemObject.GetDirectories(targetToList); if (files != null) { foreach (var file in files) { var fileInfo = ConnectionObject.FileSystemObject.GetFileInfo(file); response.Append(GenerateEntry(fileInfo)); response.Append("\r\n"); } } if (directories != null) { foreach (var dir in directories) { var dirInfo = ConnectionObject.FileSystemObject.GetDirectoryInfo(dir); response.Append(GenerateEntry(dirInfo)); response.Append("\r\n"); } } #endregion #region Write response var socketData = new FtpDataSocket(ConnectionObject); if (!socketData.Loaded) { return GetMessage(425, "Unable to establish the data connection"); } SocketHelpers.Send(ConnectionObject.Socket, "150 Opening data connection for MLSD\r\n", ConnectionObject.Encoding); // ToDo, send response according to ConnectionObject.DataType, i.e., Ascii or Binary socketData.Send(response.ToString(), Encoding.UTF8); socketData.Close(); #endregion return GetMessage(226, "MLSD successful"); }