/MyIPForm.cs

using System;

using System.Net.NetworkInformation;

using System.Reflection;

using System.Text;

using System.Text.RegularExpressions;

using System.Windows.Forms;

using MyIP.Localization;



namespace MyIP

{

    public partial class MyIP : Form

    {

        public MyIP()

        {

            //Thread.CurrentThread.CurrentUICulture = new CultureInfo("sv-SE");



            InitializeComponent();



            StartPosition = FormStartPosition.CenterScreen;



            Version version = Assembly.GetExecutingAssembly().GetName().Version;

            int major = version.Major;

            int minor = version.Minor;

            int build = version.Build;



            Text = String.Format("{0} {1}.{2}", Language.MyIPForm.Title, major, minor);

            btnAbout.Text = Language.MyIPForm.btnAbout;

            btnRefresh.Text = Language.MyIPForm.btnRefresh;

            btnExit.Text = Language.MyIPForm.btnExit;

            boxExternalIP.Text = Language.MyIPForm.boxExternalIP;

            boxInternalIP.Text = Language.MyIPForm.boxInternalIP;

            btnExtIPCopy.Text = Language.MyIPForm.btnCopy;

            btnIntIPCopy.Text = Language.MyIPForm.btnCopy;

        }



        private void RefreshBtn_Click(object sender, EventArgs e)

        {

            string wan = CheckExtIp();

            string lan = CheckIntIp();

            lblExtIP.Text = wan;

            lblIntIP.Text = lan;



            // Enable copy buttons first AFTER some content have been entered

            btnIntIPCopy.Enabled = true;

            btnExtIPCopy.Enabled = true;

        }



        private void ExitBtn_Click(object sender, EventArgs e)

        {

            this.Close();

        }



        private static string CheckExtIp()

        {

            // IPv4 & IPv6: myip.rrnet.info

            // IPv4 only: myip4.rrnet.info

            // IPv6 only: myip6.rrnet.info



            // TODO: Error handling if the webserver don't respond or any other error occurs

            string content = Encoding.ASCII.GetString(Http.Get("http://myip4.rrnet.info"));



            try

            {

                content = Regex.Replace(content, @"[^\w\.@-]", "");

            }

            catch (Exception ex)

            {

                Program.ShowException(ex);

            }



            return content.ToString();

        }



        private static bool IsPrivIp(string address)

        {

            bool isPrivate = false;

            if (new IPSubnet("192.168.0.0/16").Contains(address))

            {

                isPrivate = true;

            }

            else if (new IPSubnet("172.16.0.0/12").Contains(address))

            {

                isPrivate = true;

            }

            else if (new IPSubnet("10.0.0.0/8").Contains(address))

            {

                isPrivate = true;

            }

            return isPrivate;

        }



        private static string CheckIntIp()

        {

            NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();

            if (nics == null || nics.Length < 1)

            {

                MessageBox.Show("No Nics");

                return "";

            }



            foreach (NetworkInterface adapter in nics)

            {

                // Ignore Non-IPv4 interfaces

                // Ignore Loopback interfaces

                // Ignore interfaces that are not up

                if ((adapter.NetworkInterfaceType == NetworkInterfaceType.Wireless80211

                   || adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet)

                   && adapter.NetworkInterfaceType != NetworkInterfaceType.Loopback

                   && adapter.OperationalStatus == OperationalStatus.Up

                   && adapter.Supports(NetworkInterfaceComponent.IPv4) == true)

                {

                    foreach (UnicastIPAddressInformation ip in adapter.GetIPProperties().UnicastAddresses)

                    {

                        if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)

                        {

                            if (IsPrivIp(ip.Address.ToString()))

                            {

                                return ip.Address.ToString();

                                //MessageBox.Show(adapter.Name + "\r\n" + ip.Address.ToString());

                            }

                        }

                    }

                }

            }

            return "";

        }



        private void MyIP_Load(object sender, EventArgs e)

        {



        }



        private void AboutBtn_Click(object sender, EventArgs e)

        {

            Cursor.Current = Cursors.WaitCursor;

            using (AboutForm form = new AboutForm())

            {

                Cursor.Current = Cursors.Default;

                form.ShowDialog();

            }

        }



        private void btnExtIPCopy_Click(object sender, EventArgs e)

        {

            Clipboard.SetText(lblExtIP.Text.ToString());

            if (Clipboard.GetText() == lblExtIP.Text.ToString())

            {

                MessageBox.Show(String.Format(Language.MyIPForm.CopySuccess, lblExtIP.Text.ToString()), "", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }

            else

            {

                MessageBox.Show(String.Format(Language.MyIPForm.CopyFailed, lblExtIP.Text.ToString()), Language.General.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);

            }

        }



        private void btIntIPCopy_Click(object sender, EventArgs e)

        {

            Clipboard.SetText(lblIntIP.Text.ToString());

            if (Clipboard.GetText() == lblIntIP.Text.ToString())

            {

                MessageBox.Show(String.Format(Language.MyIPForm.CopySuccess, lblIntIP.Text.ToString()), "", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }

            else

            {

                MessageBox.Show(String.Format(Language.MyIPForm.CopyFailed, lblIntIP.Text.ToString()), Language.General.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);

            }

        }

    }

}