private void STOR(FtpCommand cmd)
{
CheckLogin();
if (cmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
CheckDataConnExist();
restartPos = 0;
try
{
Statue = FtpSessionStatue.Upload;
bool isFile;
string localPath = GetLocalPath(cmd.Parameters[0], FtpOption.Upload, out isFile);
dataConn.MaxLengthOfUpload = user.MaxUploadFileLength;
dataConn.RecvFile = new FileStream(localPath, FileMode.Create);
Response("150 Opening BINARY mode data connection for file transfer.");
if (dataConn.ReceiveFile(localPath, restartPos))
{
Response("226 Transfer complete.");
}
else
{
NetDebuger.PrintErrorMessage(this, dataConn.AsyncHelper.Exception.Message);
Response("426 Connection closed; transfer aborted.");
}
}
catch (FtpException)
{
throw;
}
catch (Exception e)
{
NetDebuger.PrintErrorMessage(this, e.ToString());
throw new InternalException("store file");
}
finally
{
CloseDataConn();
Statue = FtpSessionStatue.Wait;
}
}
/// <summary>
/// 分发FTP请求
/// </summary>
/// <param name="cmdText"></param>
internal void SwitchFtpRequest(string cmdText)
{
NetDebuger.PrintErrorMessage(this, cmdText);
if (string.IsNullOrEmpty(cmdText))
{
return;
}
FtpCommand cmd;
int index = cmdText.IndexOf(' '); //把命令和参数部分分开
if (index != -1)
{
//把命令转成大写
cmd = new FtpCommand(cmdText.Substring(0, index).ToUpper());
cmd.Parameters.Add(cmdText.Substring(index + 1));
}
else
{
//把命令转成大写
cmd = new FtpCommand(cmdText.ToUpper());
}
//会话重新开始计时
TimeCounter.Reset();
try
{
if (!ftpHandlers.ContainsKey(cmd.Command))
{
throw new CommandNotImplementedException();
}
//分发各个命令
ftpHandlers[cmd.Command].Invoke(cmd);
}
catch (FtpException e)
{
Response(e.Message);
}
catch (Exception e)
{
NetDebuger.PrintErrorMessage(this, e.ToString());
}
}
private void RNTO(FtpCommand cmd)
{
CheckLogin();
try
{
if (cmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
if (string.IsNullOrEmpty(renamePath))
{
throw new BadSeqCommandsException();
}
bool isFile;
string destPath = GetLocalPath(cmd.Parameters[0], FtpOption.Create, out isFile);
try
{
if (Directory.Exists(renamePath))
{
Directory.Move(renamePath, destPath);
}
else
{
File.Move(renamePath, destPath);
}
}
catch (System.Exception)
{
throw new InternalException("rename path");
}
Response("250 Rename successful.");
}
finally
{
renamePath = null;
}
}
private void REST(FtpCommand ftpCmd)
{
CheckLogin();
if (ftpCmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
long temp = long.Parse(ftpCmd.Parameters[0]);
if (temp < 0)
{
throw new SyntaxException();
}
restartPos = temp;
Response(string.Format("350 Restarting at {0}.", restartPos));
}
private void SIZE(FtpCommand cmd)
{
CheckLogin();
if (cmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
string file = cmd.Parameters[0];
if (string.IsNullOrEmpty(file))
{
throw new SyntaxException();
}
bool isFile;
string localPath = GetLocalPath(file, FtpOption.List, out isFile);
long length;
try
{
if (isFile)
{
FileInfo info = new FileInfo(localPath);
length = info.Length;
Response("213 " + info.Length.ToString());
}
else
{
throw new FileNotFoundException(file);
}
}
catch (FtpException)
{
throw;
}
catch (System.Exception e)
{
throw new InternalException(e.Message);
}
}
private void USER(FtpCommand cmd)
{
if (cmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
//重新登陆，取消以前的状态
Statue = FtpSessionStatue.NotLogin;
UserName = cmd.Parameters[0];
if (ftpServer.ValidateUser(this))
{
Statue = FtpSessionStatue.Wait;
Response("230 User successfully logged in.");
}
else
{
Response("331 Password required for " + UserName);
}
}
private void OPTS(FtpCommand ftpCmd)
{
CheckLogin();
if (ftpCmd.Parameters.Count == 0)
{
throw new SyntaxException();
}
if (ftpCmd.Parameters[0] == "utf8 on")
{
Encoding = Encoding.UTF8;
Response("200 UTF enabled mode.");
}
else if (ftpCmd.Parameters[0] == "utf8 off")
{
Encoding = Encoding.Default;
Response("200 ASCII enabled mode.");
}
else
{
throw new SyntaxException();
}
}
private void CWD(FtpCommand ftpCmd)
{
CheckLogin();
ChangeDir(ftpCmd);
}
private void LIST(FtpCommand ftpCmd)
{
CheckLogin();
SendPathList(ftpCmd);
}
private void RETR(FtpCommand cmd)
{
CheckLogin();
SendFile(cmd);
}
/// <summary>
/// 发送目录内容列表。（已经建立了数据连接的基础上）
/// </summary>
/// <param name="ftpCmd"></param>
internal void SendPathList(FtpCommand ftpCmd)
{
CheckDataConnExist();
try
{
Statue = FtpSessionStatue.List;
if (ftpCmd.Parameters.Count == 0)
{
ftpCmd.Parameters.Add("");
}
string virtualPath = ftpCmd.Parameters[0].TrimEnd('*');
if (virtualPath.StartsWith("-"))
{
//TODO:参数检查功能
virtualPath = "";
}
if (virtualPath == "")
{
virtualPath = CurrentDir;
}
bool isFile;
string localPath = GetLocalPath(virtualPath, FtpOption.List, out isFile);
StringBuilder sb = new StringBuilder();
//列举目录
if (!isFile)
{
Response("150 Opening ASCII mode data connection for directory list.");
DirectoryInfo localDir = new DirectoryInfo(localPath);
foreach (DirectoryInfo dir in localDir.GetDirectories())
{
WriteFileInfo(sb, dir.Name, 0, dir.LastWriteTime, false);
}
//列举文件
foreach (FileInfo file in localDir.GetFiles())
{
WriteFileInfo(sb, file.Name, file.Length, file.LastWriteTime, true);
}
}
else
{
Response("150 Opening ASCII mode data connection for directory list.");
FileInfo file = new FileInfo(localPath);
WriteFileInfo(sb, file.Name, file.Length, file.LastWriteTime, true);
}
//NetDebuger.PrintDebugMessage(this, sb.ToString());
dataConn.Send(new DataBlock(Encoding.GetBytes(sb.ToString())), opertionTimeout);
Response("226 Transfer complete.");
}
catch (System.IO.IOException e)
{
throw new InternalException(e.Message);
}
finally
{
CloseDataConn();
Statue = FtpSessionStatue.Wait;
}
}
private void SYST(FtpCommand cmd)
{
CheckLogin();
Response("215 UNIX Type: L8");
}
private void NOOP(FtpCommand cmd)
{
CheckLogin();
Response("200 NOOP Command Successful.");
}
private void HELP(FtpCommand cmd)
{
CheckLogin();
Response("500 No Help Available.");
}
private void FEAT(FtpCommand cmd)
{
Response("211-Features:\r\n MDTM\r\n SIZE\r\n REST STREAM\r\n PASV\r\n211 End");
}
private void PASV(FtpCommand ftpCmd)
{
CheckLogin();
CreateDataConnection();
}
private void PWD(FtpCommand ftpCmd)
{
CheckLogin();
Response("257 \"" + CurrentDir + "\" is current directory.");
}
private void QUIT(FtpCommand cmd)
{
CheckLogin();
this.Statue = FtpSessionStatue.NotLogin;
Response("220 " + ftpServer.ByeMessage);
}