因为工作需要,需要用程序来控制VPN代理,在google搜了搜,还有不少朋友有同样的需求,但是目前在网上搜索到的解决方案,都还遗留了一些问题。只好自己手动把方案补齐了一下,谈不上原创,大牛们飘过就行。
先谈谈自己的需求吧,就是针对如图示中的VPN连接,咱们至少需要以下四个基本功能
1.新建一个VPN
2.修改指定名字VPN的主机IP地址
3.监视当前连接状态
4.删除指定名称的VPN
直接上代码吧,这里面引用了【DotRas.dll】 大家可以到官网http://dotras.codeplex.com/ 下载
using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using DotRas;
using System.Text.RegularExpressions;
namespace XXX
{
public class VPNHelper
{
// 系统路径 C:\windows\system32\
private static string WinDir = Environment.GetFolderPath(Environment.SpecialFolder.System) + @"";
// rasdial.exe
private static string RasDialFileName = "rasdial.exe";
// VPN路径 C:\windows\system32\rasdial.exe
private static string VPNPROCESS = WinDir + RasDialFileName;
// VPN地址
public string IPToPing { get; set; }
// VPN名称
public string VPNName { get; set; }
// VPN用户名
public string UserName { get; set; }
// VPN密码
public string PassWord { get; set; }
public VPNHelper()
{
}
/// <summary>
/// 带参构造函数
/// </summary>
/// <param name="_vpnIP"></param>
/// <param name="_vpnName"></param>
/// <param name="_userName"></param>
/// <param name="_passWord"></param>
public VPNHelper(string _vpnIP, string _vpnName, string _userName, string _passWord)
{
this.IPToPing = _vpnIP;
this.VPNName = _vpnName;
this.UserName = _userName;
this.PassWord = _passWord;
}
/// <summary>
/// 尝试连接VPN(默认VPN)
/// </summary>
/// <returns></returns>
public void TryConnectVPN()
{
this.TryConnectVPN(this.VPNName,this.UserName,this.PassWord);
}
/// <summary>
/// 尝试断开连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN()
{
this.TryDisConnectVPN(this.VPNName);
}
/// <summary>
/// 创建或更新一个默认的VPN连接
/// </summary>
public void CreateOrUpdateVPN()
{
this.CreateOrUpdateVPN(this.VPNName, this.IPToPing);
}
/// <summary>
/// 尝试删除连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDeleteVPN()
{
this.TryDeleteVPN(this.VPNName);
}
/// <summary>
/// 尝试连接VPN(指定VPN名称,用户名,密码)
/// </summary>
/// <returns></returns>
public void TryConnectVPN(string connVpnName,string connUserName,string connPassWord)
{
try
{
string args = string.Format("{0} {1} {2}", connVpnName, connUserName, connUserName);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 尝试断开VPN(指定VPN名称)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN(string disConnVpnName)
{
try
{
string args = string.Format(@"{0} /d", disConnVpnName);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 创建或更新一个VPN连接(指定VPN名称,及IP)
/// </summary>
public void CreateOrUpdateVPN(string updateVPNname,string updateVPNip)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
// 如果已经该名称的VPN已经存在,则更新这个VPN服务器地址
if (allUsersPhoneBook.Entries.Contains(updateVPNname))
{
allUsersPhoneBook.Entries[updateVPNname].PhoneNumber = updateVPNip;
// 不管当前VPN是否连接,服务器地址的更新总能成功,如果正在连接,则需要VPN重启后才能起作用
allUsersPhoneBook.Entries[updateVPNname].Update();
}
// 创建一个新VPN
else
{
RasEntry entry = RasEntry.CreateVpnEntry(updateVPNname, updateVPNip, RasVpnStrategy.PptpFirst, RasDevice.GetDeviceByName("(PPTP)", RasDeviceType.Vpn));
allUsersPhoneBook.Entries.Add(entry);
dialer.EntryName = updateVPNname;
dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
}
}
/// <summary>
/// 删除指定名称的VPN
/// 如果VPN正在运行,一样会在电话本里删除,但是不会断开连接,所以,最好是先断开连接,再进行删除操作
/// </summary>
/// <param name="delVpnName"></param>
public void TryDeleteVPN(string delVpnName)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
if (allUsersPhoneBook.Entries.Contains(delVpnName))
{
allUsersPhoneBook.Entries.Remove(delVpnName);
}
}
/// <summary>
/// 获取当前正在连接中的VPN名称
/// </summary>
public List<string> GetCurrentConnectingVPNNames()
{
List<string> ConnectingVPNList = new List<string>();
Process proIP = new Process();
proIP.StartInfo.FileName = "cmd.exe ";
proIP.StartInfo.UseShellExecute = false;
proIP.StartInfo.RedirectStandardInput = true;
proIP.StartInfo.RedirectStandardOutput = true;
proIP.StartInfo.RedirectStandardError = true;
proIP.StartInfo.CreateNoWindow = true;//不显示cmd窗口
proIP.Start();
proIP.StandardInput.WriteLine(RasDialFileName);
proIP.StandardInput.WriteLine("exit");
// 命令行运行结果
string strResult = proIP.StandardOutput.ReadToEnd();
proIP.Close();
// 用正则表达式匹配命令行结果,只限于简体中文系统哦^_^
Regex regger = new Regex("(?<=已连接\r\n)(.*\n)*(?=命令已完成)", RegexOptions.Multiline);
// 如果匹配,则说有正在连接的VPN
if (regger.IsMatch(strResult))
{
string[] list = regger.Match(strResult).Value.ToString().Split(‘\n‘);
for(int index = 0 ; index < list.Length;index++)
{
if (list[index]!=string.Empty)
ConnectingVPNList.Add(list[index].Replace("\r",""));
}
}
// 没有正在连接的VPN,则直接返回一个空List<string>
return ConnectingVPNList;
}
}
}
注:该类可以方便的对VPN进行【增】,【删】,【改】,【连接】,【断开】操作,在操作前后可以用GetCurrentConnectingVPNNames方法来得到正在使用中的VPN名称列表,这样一来,可以轻松判断【连接】或【断开】是否成功执行。
当然,鉴于【连接】,【断开】操作有一定的延迟,建议操作执行后等待一定时间,再使用GetCurrentConnectingVPNNames方法来查看执行结果