PortProxyGUI/PortProxyGUI - NET45/SetProxyForm.cs

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C#
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using PortProxyGUI._extern.NStandard;
using System;
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using System.Linq;
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using System.Text.RegularExpressions;
using System.Windows.Forms;
namespace PortProxyGUI
{
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public partial class SetProxyForm : Form
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{
public readonly PortProxyGUI PortProxyGUI;
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public bool UpdateMode { get; private set; }
private string AutoTypeString { get; }
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public SetProxyForm(PortProxyGUI portProxyGUI)
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{
PortProxyGUI = portProxyGUI;
InitializeComponent();
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AutoTypeString = comboBox_type.Text = comboBox_type.Items.OfType<string>().First();
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}
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public void UseNormalMode()
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{
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comboBox_type.Enabled = true;
textBox_listenOn.Enabled = true;
textBox_listenPort.Enabled = true;
comboBox_type.Text = AutoTypeString;
textBox_listenOn.Text = "*";
textBox_listenPort.Text = "";
textBox_connectTo.Text = "";
textBox_connectPort.Text = "";
UpdateMode = false;
}
public void UseUpdateMode(string type, string listenOn, string listenPort, string connectTo, string connectPort)
{
comboBox_type.Enabled = false;
textBox_listenOn.Enabled = false;
textBox_listenPort.Enabled = false;
comboBox_type.Text = type;
textBox_listenOn.Text = listenOn;
textBox_listenPort.Text = listenPort;
textBox_connectTo.Text = connectTo;
textBox_connectPort.Text = connectPort;
UpdateMode = true;
}
private void SetPortProxy(string type, string action, string listenOn, string listenPort, string connectTo, string connectPort)
{
var output = CmdRunner.Execute($"netsh interface portproxy {action} {type} listenaddress={listenOn} listenport={listenPort} connectaddress={connectTo} connectport={connectPort}");
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Invoke((Action)(() => PortProxyGUI.RefreshProxyList()));
}
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private bool IsIPv4(string ip)
{
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return ip.IsMatch(new Regex(@"^(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])(?:\.(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])){3}$"));
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}
private bool IsIPv6(string ip)
{
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return ip.IsMatch(new Regex(@"^[\dABCDEF]{2}(?::(?:[\dABCDEF]{2})){5}$"));
}
private string GetPassType(string listenOn, string connectTo)
{
var from = IsIPv6(listenOn) ? "v6" : "v4";
var to = IsIPv6(connectTo) ? "v6" : "v4";
return $"{from}to{to}";
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}
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private void button_submit_Click(object sender, EventArgs e)
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{
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var type = comboBox_type.Text.Trim();
var listenOn = textBox_listenOn.Text.Trim().ToLower();
var connectTo = textBox_connectTo.Text.Trim().ToLower();
var listenPort = textBox_listenPort.Text.Trim();
var connectPort = textBox_connectPort.Text.Trim();
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if (!int.TryParse(listenPort, out var _listenPort) || _listenPort < 0 || _listenPort > 65535)
{
MessageBox.Show($"The listen port is invalid.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (!int.TryParse(connectPort, out var _connectPort) || _connectPort < 0 || _connectPort > 65535)
{
MessageBox.Show($"The connect port is invalid.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
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if (type == AutoTypeString) type = GetPassType(listenOn, connectTo);
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if (!new[] { "v4tov4", "v4tov6", "v6tov4", "v6tov6" }.Contains(type))
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{
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MessageBox.Show($"Unknow type for ({listenOn} -> {connectTo}).", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
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return;
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}
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SetPortProxy(type, UpdateMode ? "set" : "add", listenOn, listenPort, connectTo, connectPort);
Close();
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}
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private void SetProxyForm_Load(object sender, EventArgs e)
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{
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Top = PortProxyGUI.Top + (PortProxyGUI.Height - Height) / 2;
Left = PortProxyGUI.Left + (PortProxyGUI.Width - Width) / 2;
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}
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private void SetProxyForm_FormClosing(object sender, FormClosingEventArgs e)
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{
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PortProxyGUI.SetProxyForm = null;
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}
}
}