.net,C#,Ftp各种操作,上传,下载,删除文件,创建目录,删除目录,获得文件列表等
using System;using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
namespace FTP
{
/**////
/// 类描述：对FTP 操作类
/// 作者：何火生
///
public class FTPFactory
{
Arrbuite#region Arrbuite
private string remoteHost, remotePath, remoteUser, remotePass, mes;
private int remotePort, bytes;
private Socket clientSocket;
private int retValue;
private Boolean debug;
private Boolean logined;
private string reply;
private static int BLOCK_SIZE = 512;
Byte[] buffer = new Byte;
Encoding ASCII = Encoding.ASCII;
#endregion
protected FTPFactory()
{
remoteHost = "localhost";
remotePath = ".";
remoteUser = "anonymous";
remotePass = "jaimon@school2000.co.uk";
FTPSetup();
}
构造函数#region 构造函数
private void FTPSetup()
{
remotePort = 21;
debug = false;
logined = false;
}
#endregion
getFileList#region getFileList
/**////
/// Return a string array containing the remote directory's file list.
///
///
///
public string[] getFileList(string mask)
{
if (!logined)
{
login();
}
Socket cSocket = createDataSocket();
sendCommand("NLST " + mask);
if (!(retValue == 150 || retValue == 125))
{
throw new IOException(reply.Substring(4));
}
mes = "";
while (true)
{
int bytes = cSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes);
if (bytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] mess = mes.Split(seperator);
cSocket.Close();
readReply();
if (retValue != 226)
{
throw new IOException(reply.Substring(4));
}
return mess;
}
#endregion
getFileSize#region getFileSize
/**////
/// Return the size of a file.
///
///
///
public long getFileSize(string fileName)
{
if (!logined)
{
login();
}
sendCommand("SIZE " + fileName);
long size = 0;
if (retValue == 213)
{
size = Int64.Parse(reply.Substring(4));
}
else
{
throw new IOException(reply.Substring(4));
}
return size;
}
#endregion
login#region login
/**////
/// Login to the remote server.
///
public void login()
{
clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(Dns.GetHostEntry(remoteHost).AddressList, remotePort);
try
{
clientSocket.Connect(ep);
}
catch
{
//throw new IOException("Couldn't connect to remote server");;
}
readReply();
if (retValue != 220)
{
Close();
//throw new IOException(reply.Substring(4));
}
if (debug)
Console.WriteLine("USER " + remoteUser);
sendCommand("USER " + remoteUser);
if (!(retValue == 331 || retValue == 230))
{
cleanup();
//throw new IOException(reply.Substring(4));
}
if (retValue != 230)
{
if (debug)
Console.WriteLine("PASS xxx");
sendCommand("PASS " + remotePass);
if (!(retValue == 230 || retValue == 202))
{
cleanup();
//throw new IOException(reply.Substring(4));
}
}
logined = true;
Console.WriteLine("Connected to " + remoteHost);
ChDir(remotePath);
}
#endregion
setBinaryMode#region setBinaryMode
/**////
/// If the value of mode is true, set binary mode for downloads.
/// Else, set Ascii mode.
///
///
public void setBinaryMode(Boolean mode)
{
if (mode)
{
sendCommand("TYPE I");
}
else
{
sendCommand("TYPE A");
}
if (retValue != 200)
{
throw new IOException(reply.Substring(4));
}
}
#endregion
Download#region Download
/**////
/// Download a file to the Assembly's local directory,
/// keeping the same file name.
///
///
///
public bool Download(string remFileName)
{
return Download(remFileName, "", false);
}
/**////
/// Download a remote file to the Assembly's local directory,
/// keeping the same file name, and set the resume flag.
///
///
///
///
public bool Download(string remFileName, Boolean resume)
{
return Download(remFileName, "", resume);
}
/**////
/// Download a remote file to a local file name which can include
/// a path. The local file name will be created or overwritten,
/// but the path must exist.
///
///
///
///
public bool Download(string remFileName, string locFileName)
{
return Download(remFileName, locFileName, false);
}
/**////
/// Download a remote file to a local file name which can include
/// a path, and set the resume flag. The local file name will be
/// created or overwritten, but the path must exist.
///
///
///
///
///
public bool Download(string remFileName, string locFileName, Boolean resume)
{
bool Finish = false;
bool FileExists = false;
if (!logined)
{
login();
}
setBinaryMode(true);
try
{
FileInfo fileInfo = new FileInfo(locFileName);
if (fileInfo.Exists)
{
fileInfo.IsReadOnly = false;
fileInfo.Delete();
}
}
catch
{
return false;
}
foreach (string str in getFileList("."))
{
if (str.IndexOf(remFileName.ToUpper(), StringComparison.CurrentCultureIgnoreCase) != -1)
{
FileExists = true;
break;
}
}
if (!FileExists)
{
//Console.WriteLine("文件不存在!");
return false;
}
Console.WriteLine("Downloading file " + remFileName + " from " + remoteHost + "/" + remotePath);
if (locFileName.Equals(""))
{
locFileName = remFileName;
}
if (!File.Exists(locFileName))
{
Stream st = File.Create(locFileName);
st.Close();
}
FileStream output = null;
try
{
output = new FileStream(locFileName, FileMode.Open);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return false;
}
Socket cSocket = createDataSocket();
long offset = 0;
if (resume)
{
offset = output.Length;
if (offset > 0)
{
sendCommand("REST " + offset);
if (retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Some servers may not support resuming.
Finish = false;
offset = 0;
}
}
if (offset > 0)
{
if (debug)
{
Console.WriteLine("seeking to " + offset);
}
long npos = output.Seek(offset, SeekOrigin.Begin);
Console.WriteLine("new pos=" + npos);
}
}
sendCommand("RETR " + remFileName);
if (!(retValue == 150 || retValue == 125))
{
throw new IOException(reply.Substring(4));
}
while (true)
{
bytes = cSocket.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, bytes);
if (bytes0)
{
sendCommand("REST " + offset);
if (retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Remote server may not support resuming.
offset = 0;
}
}
sendCommand("STOR " + Path.GetFileName(fileName));
if (!(retValue == 125 || retValue == 150))
{
throw new IOException(reply.Substring(4));
}
// open input stream to read source file
FileStream input = new FileStream(fileName, FileMode.Open);
if (offset != 0)
{
if (debug)
{
Console.WriteLine("seeking to " + offset);
}
input.Seek(offset, SeekOrigin.Begin);
}
Console.WriteLine("Uploading file " + fileName + " to " + remotePath);
while ((bytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
cSocket.Send(buffer, bytes, 0);
}
input.Close();
Console.WriteLine("");
if (cSocket.Connected)
{
cSocket.Close();
}
readReply();
if (!(retValue == 226 || retValue == 250))
{
throw new IOException(reply.Substring(4));
}
return true;
}
#endregion
DeleteRemoteFile#region DeleteRemoteFile
/**////
/// Delete a file from the remote FTP server.
///
///
public void DeleteRemoteFile(string fileName)
{
if (!logined)
{
login();
}
sendCommand("DELE " + fileName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
#endregion
RenameRemoteFile#region RenameRemoteFile
/**////
/// Rename a file on the remote FTP server.
///
///
///
public void RenameRemoteFile(string oldFileName, string newFileName)
{
if (!logined)
{
login();
}
sendCommand("RNFR " + oldFileName);
if (retValue != 350)
{
throw new IOException(reply.Substring(4));
}
//known problem
//rnto will not take care of existing file.
//i.e. It will overwrite if newFileName exist
sendCommand("RNTO " + newFileName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
#endregion
MkDir#region MkDir
/**////
/// Create a directory on the remote FTP server.
///
///
public void MkDir(string dirName)
{
if (!logined)
{
login();
}
sendCommand("MKD " + dirName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
#endregion
RmDir#region RmDir
/**////
/// Delete a directory on the remote FTP server
///
///
public void RmDir(string dirName)
{
if (!logined)
{
login();
}
sendCommand("RMD " + dirName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
#endregion
ChDir#region ChDir
/**////
/// Change the current working directory on the remote FTP server.
///
///
public void ChDir(string dirName)
{
if (dirName.Equals("."))
{
return;
}
if (!logined)
{
login();
}
sendCommand("CWD " + dirName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
this.remotePath = dirName;
Console.WriteLine("Current directory is " + remotePath);
}
#endregion
Close()#region Close()
/**////
///Close the FTP connection.
///
public void Close()
{
if (clientSocket != null)
{
sendCommand("QUIT");
}
cleanup();
Console.WriteLine("Closing");
}
#endregion
OTHER#region OTHER
/**////
/// Set debug mode.
///
///
public void setDebug(Boolean debug)
{
this.debug = debug;
}
private void readReply()
{
mes = "";
reply = readLine();
retValue = Int32.Parse(reply.Substring(0, 3));
}
private void cleanup()
{
if (clientSocket != null)
{
clientSocket.Close();
clientSocket = null;
}
logined = false;
}
#endregion
readLine#region readLine
private string readLine()
{
while (true)
{
bytes = clientSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes);
if (bytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] mess = mes.Split(seperator);
if (mes.Length > 2)
{
mes = mess;
}
else
{
mes = mess;
}
if (!mes.Substring(3, 1).Equals(" "))
{
return readLine();
}
if (debug)
{
for (int k = 0; k < mess.Length - 1; k++)
{
Console.WriteLine(mess);
}
}
return mes;
}
#endregion
sendCommand#region sendCommand
private void sendCommand(String command)
{
Byte[] cmdBytes = Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
clientSocket.Send(cmdBytes, cmdBytes.Length, 0);
readReply();
}
#endregion
createDataSocket#region createDataSocket
private Socket createDataSocket()
{
sendCommand("PASV");
if (retValue != 227)
{
throw new IOException(reply.Substring(4));
}
int index1 = reply.IndexOf('(');
int index2 = reply.IndexOf(')');
string ipData = reply.Substring(index1 + 1, index2 - index1 - 1);
int[] parts = new int;
int len = ipData.Length;
int partCount = 0;
string buf = "";
for (int i = 0; i < len && partCount
页:
[1]