当前位置:
开发笔记 >
Android > 正文
C#版ftp方法实现类的代码
作者:挠挠扣扣笑嘻嘻 | 来源:互联网 | 2022-05-14 05:51
C#版ftp方法实现类的代码
/*
FTPFactory.cs
Better view with tab space=4
Written by Jaimon Mathew (jaimonmathew@rediffmail.com)
Rolander,Dan (Dan.Rolander@marriott.com) has modified the
download
method to cope with file name with path information. He also
provided
the XML comments so that the library provides Intellisense
descriptions.
use the following line to compile
csc /target:library /out:FTPLib.dll /r:System.DLL FTPFactory.cs
*/
using System;
using System.Threading;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
using System.Configuration;
namespace AudioCollect
{
///
/// FTPFactory 的摘要说明。
///
public class FTPFactory
{
static readonly log4net.ILog log = log4net.LogManager.GetLogger("log4net");
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[BLOCK_SIZE];
Encoding ASCII = Encoding.ASCII;
public FTPFactory()
{
string FTPRemoteIP = ConfigurationSettings.AppSettings["FTPRemoteIP"];
int FTPRemotePort = Convert.ToInt32( ConfigurationSettings.AppSettings["FTPRemotePort"] );
string FTPUser = ConfigurationSettings.AppSettings["FTPUser"];
string FTPPassword = ConfigurationSettings.AppSettings["FTPPassword"];
remoteHost = FTPRemoteIP;
remotePath = ".";
remoteUser = FTPUser;
remotePass = FTPPassword;
remotePort =FTPRemotePort;
debug = false;
logined = false;
}
///
/// Set the name of the FTP server to connect to.
///
/// Server name
public void setRemoteHost(string remoteHost)
{
this.remoteHost = remoteHost;
}
///
/// Return the name of the current FTP server.
///
/// Server name
public string getRemoteHost()
{
return remoteHost;
}
///
/// Set the port number to use for FTP.
///
/// Port number
public void setRemotePort(int remotePort)
{
this.remotePort = remotePort;
}
///
/// Return the current port number.
///
/// Current port number
public int getRemotePort()
{
return remotePort;
}
///
/// Set the remote directory path.
///
/// The remote directory path
public void setRemotePath(string remotePath)
{
this.remotePath = remotePath;
}
///
/// Return the current remote directory path.
///
/// The current remote directory path.
public string getRemotePath()
{
return remotePath;
}
///
/// Set the user name to use for logging into the remote server.
///
/// Username
public void setRemoteUser(string remoteUser)
{
this.remoteUser = remoteUser;
}
///
/// Set the password to user for logging into the remote server.
///
/// Password
public void setRemotePass(string remotePass)
{
this.remotePass = remotePass;
}
///
/// 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 = "";
Thread.Sleep(700);
while(true)
{
if(cSocket.Connected)
{
int bytes = cSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes);
if(bytes < buffer.Length)
{
break;
}
}
else
{
log.Info("socket 连接断了!");
}
}
log.Info(mes);
char[] seperator = {'\n'};
string[] mess = mes.Split(seperator);
foreach(string fileName in mess)
{
log.Info(fileName);
}
cSocket.Close();
readReply();
if(retValue != 226)
{
throw new IOException(reply.Substring(4));
}
return mess;
}
public string[] getFileList()
{
if(!logined)
{
login();
}
Socket cSocket = createDataSocket();
sendCommand("LIST ");
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;
}
}
log.Info(mes);
char[] seperator = {'\n'};
string[] mess = mes.Split(seperator);
cSocket.Close();
readReply();
if(retValue != 226)
{
throw new IOException(reply.Substring(4));
}
return mess;
}
///
/// 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;
}
///
/// Login to the remote server.
///
public void login()
{
clientSocket = new
Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
IPEndPoint ep = new
IPEndPoint(Dns.Resolve(remoteHost).AddressList[0], remotePort);
try
{
clientSocket.Connect(ep);
}
catch(Exception)
{
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);
}
///
/// 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));
}
}
///
/// Download a file to the Assembly's local directory,
/// keeping the same file name.
///
///
public void download(string remFileName)
{
download(remFileName,"",false);
}
///
/// Download a remote file to the Assembly's local directory,
/// keeping the same file name, and set the resume flag.
///
///
///
public void download(string remFileName,Boolean resume)
{
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 void download(string remFileName,string locFileName)
{
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 void download(string remFileName,string
locFileName,Boolean resume)
{
if(!logined)
{
login();
}
setBinaryMode(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 = new
FileStream(locFileName,FileMode.Create);
Socket cSocket = createDataSocket();
long offset = 0;
if(resume)
{
offset = output.Length;
if(offset > 0 )
{
setBinaryMode(false);
sendCommand("REST "+offset);
if(retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Some servers may not support resuming.
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(bytes <= 0)
{
break;
}
}
output.Close();
if (cSocket.Connected)
{
cSocket.Close();
}
Console.WriteLine("");
readReply();
if( !(retValue == 226 || retValue == 250) )
{
throw new IOException(reply.Substring(4));
}
}
///
/// Upload a file.
///
///
public void upload(string fileName)
{
upload(fileName,false);
}
///
/// Upload a file and set the resume flag.
///
///
///
public void upload(string fileName,Boolean resume)
{
if(!logined)
{
login();
}
Socket cSocket = createDataSocket();
long offset=0;
if(resume)
{
try
{
setBinaryMode(true);
offset = getFileSize(fileName);
}
catch(Exception)
{
offset = 0;
}
}
if(offset > 0 )
{
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));
}
}
///
/// 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));
}
}
///
/// 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));
}
}
///
/// 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));
}
}
///
/// 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));
}
}
///
/// 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);
}
///
/// Close the FTP connection.
///
public void close()
{
if( clientSocket != null )
{
sendCommand("QUIT");
}
cleanup();
Console.WriteLine("Closing...");
}
///
/// 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;
}
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[mess.Length-2];
}
else
{
mes = mess[0];
}
if(!mes.Substring(3,1).Equals(" "))
{
return readLine();
}
if(debug)
{
for(int k=0;k < mess.Length-1;k++)
{
Console.WriteLine(mess[k]);
}
}
return mes;
}
private void sendCommand(String command)
{
Byte[] cmdBytes =
Encoding.ASCII.GetBytes((command+"\r\n").ToCharArray());
clientSocket.Send(cmdBytes, cmdBytes.Length, 0);
readReply();
}
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[6];
int len = ipData.Length;
int partCount = 0;
string buf="";
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = Char.Parse(ipData.Substring(i,1));
if (Char.IsDigit(ch))
buf+=ch;
else if (ch != ',')
{
throw new IOException("Malformed PASV reply: " +
reply);
}
if (ch == ',' || i+1 == len)
{
try
{
parts[partCount++] = Int32.Parse(buf);
buf="";
}
catch (Exception)
{
throw new IOException("Malformed PASV reply: " +
reply);
}
}
}
string ipAddress = parts[0] + "."+ parts[1]+ "." +
parts[2] + "." + parts[3];
int port = (parts[4] << 8) + parts[5];
Socket s = new
Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
s.SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.SendTimeout, 5000);
IPEndPoint ep = new
IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);
try
{
s.Connect(ep);
}
catch(Exception)
{
throw new IOException("Can't connect to remote server");
}
return s;
}
}
}
推荐阅读
-
本文介绍了如何使用Echarts for Weixin在微信小程序中构建中国地图,并实现区域点击事件。包括效果展示、条件准备和逻辑实现的具体步骤。 ...
[详细]
蜡笔小新 2024-11-18 19:37:06
-
本文介绍了如何在Graylog中配置输入源,并详细说明了Spring Boot项目中集成Graylog的日志聚合和分析方法,包括logback.xml的多环境配置。 ...
[详细]
蜡笔小新 2024-11-17 11:47:30
-
-
ABP框架是ASP.NET Boilerplate的简称,它不仅是一个开源且文档丰富的应用程序框架,还提供了一套基于领域驱动设计(DDD)的最佳实践架构模型。本文将详细介绍ABP框架的特点、项目结构及其在Web API优先架构中的应用。 ...
[详细]
蜡笔小新 2024-11-16 18:09:51
-
可参照github代码:https:github.comrabbitmqrabbitmq-tutorialsblobmasterjavaEmitLogTopic.ja ...
[详细]
蜡笔小新 2024-11-15 18:14:04
-
本文介绍如何通过虚拟机搭建一个多节点的Linux环境,这对于学习、实验和项目部署都具有重要意义。文章详细讲解了网络IP设置、节点间通信等关键步骤。 ...
[详细]
蜡笔小新 2024-11-18 11:49:49
-
本文介绍了如何在Linux系统中获取库源码,并在从源代码编译软件时收集所需的依赖项列表。 ...
[详细]
蜡笔小新 2024-11-17 20:34:02
-
蜡笔小新 2024-11-16 16:05:59
-
通过空间思维解析GiST索引的构建方式及其在空间数据检索中的应用。 ...
[详细]
蜡笔小新 2024-11-16 15:34:22
-
本文介绍了多种常用的开发工具,包括PyCharm、Appium、Jenkins、Postman、Fiddler、Charles、Airtest、Android Studio、Navicat和Typora,并提供了它们的基本使用方法。 ...
[详细]
蜡笔小新 2024-11-16 14:39:15
-
本文详细介绍如何在 iOS 应用中集成百度地图,实现基本的地图定位和地理编码功能。配置详情请参考官方文档:http://developer.baidu.com/map/index.php?title=iossdk ...
[详细]
蜡笔小新 2024-11-16 14:37:27
-
本文详细介绍了如何实现 RocketMQ 的运维监控,包括监控平台的搭建、常用运维命令及其具体用法。适合对 RocketMQ 监控感兴趣的读者参考。 ...
[详细]
蜡笔小新 2024-11-16 13:53:02
-
本文介绍了 LaiFengcode 在 GitHub 上的两个主要开源项目:SopCastComponent 和 iOS 相关组件。 ...
[详细]
蜡笔小新 2024-11-16 13:15:12
-
本文介绍了 PostgreSQL 12 中的一项重要改进,即 max_wal_senders 参数不再计入 max_connections,从而解决了流复制连接槽不足的问题。 ...
[详细]
蜡笔小新 2024-11-16 10:40:58
-
说明Python教程正在编写中,欢迎大家加微信sinbam提供意见、建议、纠错、催更。drymail是一个邮件发送库,封装了Python的smtplib ...
[详细]
蜡笔小新 2024-11-16 09:30:20
-
本文介绍了 Java 中 com.vaadin.ui.AbstractComponent.setErrorHandler 方法的使用方法,并提供了多个代码示例,帮助开发者更好地理解和应用该方法。 ...
[详细]
蜡笔小新 2024-11-15 21:08:23
-