using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection; // For path (assembly)
using System.IO; // For Path
using System.Security; // Security Exception
using System.Windows.Forms; // Message Box
using System.Text.RegularExpressions; // For validate MAC address

namespace AnywhereTS
{
    public static class ATSGlobals
    {
        // Version
        public const string strDatabaseVersion = "1.0.0.3"; // The version string for the ATS database
        //[SerializableAttribute] public struct Color; 

        // Registry keys
        public static string strATSregRoot;         // Registry root for AnywhereTS
        public static string strTFTPD32RegRoot;    // Registry root for TFTPD32
        public const string strRegDHCPconfig = "DHCP"; // DCHP config in registry
        public const string strRegTFTPconfig = "TFTP"; // TFTP root directory in registry
        public const string strRegTFTP_root = "TFTP_root"; // TFTP root directory in registry
        public const string strRegManagedMode = "ManagedMode"; // Reg key for managed mode.
        public const string strRegConfigured = "Configured"; // Reg key for indicating of ATS is configured.
        public const string strRegTerminalServer = "TerminalServer"; // Reg key for terinal server config.
        public const string strRegRunFirstTime = "RunFirstTime"; // Reg key for first time run.
        public const string strRegAdminVersion = "AdminVersion"; // Reg key for Admin version. Indicates that Admin app is intalled on this computer and the version of the admin app.

        // Help
        public static string helpFile; // The ATS help file

        // Directories
        static public string strTFTPdir; // The TFP root directory, including final "\"
        static public string strExecPath; // The directory for the application exe-file
        static public string strHelpFilePath; // The path (incl filname) to the application help file


        // Other global variables
        static public int managedMode; // 0=Not definied, 1=Managed, 2=Unmanged
        static public int configured; // 0=ATS not configured, 1=ATS is configured, 2=Configured for control panel only.
        static public int dhcpConfig; // 0=Use internal DHCP, 1=Other DHCP
        static public int tftpConfig; // 0=Use internal TFTP, 1=Other TFTP
        static public int terminalServerConfig; // 0=Terminal server on this computer, 1=No terminal server on this computer.
        static public int runFirstTime; // 1=The application (or new version of it) is newly installed and the first time run procedures should be run. 0=The application has already been run.

        static public bool isPro=true; // True = we are running the Pro version. Always true for the open source version.
        static public bool isEval=true; //True if evalversion of client Non pro feature 
        static public string SelectedGraphicsAdaptersFile; // Name of the file for graphics adapters that corresponds to the users selection of linux kernel
        static public string SelectedNicAdaptersFile; // Name of the file for network adapters that corresponds to the users selection of linux kernel
        static public string SelectedSoundAdaptersFile; // Name of the file for sound adapters that corresponds to the users selection of linux kernel
        static public string ApplicationName; // The name of the application. Used everywhere except for in about box and main window bar. Can be either original or an OEM name.
        static public string ApplicationTitle = ApplicationName; // The title of the application, used for the main window bar and about box.

        //File names
        public const string GraphicsAdaptersA = "Graphics30.ats"; //The file containing the list of all graphics adapters
        public const string NicAdaptersA = "Nic30.ats"; // The file containing the list of all network adapters
        public const string SoundAdaptersA = "Sound30.ats"; // The file containing the list of all sound adapters

        // Client connect time options
        public static int[,] ScreenResolutions = new int[,] { { 640, 480 }, { 800, 600 }, { 1024, 600 }, { 1024, 768 }, { 1152, 864 }, { 1280, 768 }, { 1280, 800 }, { 1280, 960 }, { 1280, 1024 }, { 1368, 768 }, { 1400, 1050 }, { 1440, 900 }, { 1440, 1050 }, { 1600, 1000 }, { 1600, 1024 }, { 1600, 1200 }, { 1680, 1050 }, { 1792, 1344 }, { 1856, 1392 }, { 1920, 1080 }, { 1920, 1200 }, { 1920, 1440 } };

        // Constructor
        static ATSGlobals()
        {
            ApplicationName = "Anywhere" + "TS"; // The name of the application. Used everywhere except for in about box and main window bar. Can be either original or an OEM name.

            // Set registry root
            // This is how we find the OS on run time
            // on 32 bit OS IntPtr.Size = 4
            // on 64 bit OS IntPtr.Size = 8   
            if (IntPtr.Size == 8)
            {   // 64 bit OS
                strATSregRoot = @"SOFTWARE\Wow6432Node\" + ATSGlobals.ApplicationName + @"\ts-config";
            }
            else
            {   // 32 bit OS
                strATSregRoot = @"SOFTWARE\" + ATSGlobals.ApplicationName + @"\ts-config";
            }


            // Set registry root for TFTPD32
            // This is how we find the OS on run time
            // on 32 bit OS IntPtr.Size = 4
            // on 64 bit OS IntPtr.Size = 8   
            if (IntPtr.Size == 8)
            {   // 64 bit OS
                strTFTPD32RegRoot = @"SOFTWARE\Wow6432Node\TFTPD32";
            }
            else
            {   // 32 bit OS
                strTFTPD32RegRoot = @"SOFTWARE\TFTPD32";
            }


            helpFile = "AnywhereTS.chm"; // The ATS help file

            if (GetATSRegValueInt(strRegRunFirstTime) == 1)
            {   // We are runnning this version for the first time, write the needed registry values
                CreateRegistryValues();
            }

            strExecPath = Path.GetDirectoryName(Application.ExecutablePath);

            strHelpFilePath = strExecPath + @"\" + helpFile;

            // Get TFTP config
            tftpConfig = GetATSRegValueInt(strRegTFTPconfig);

            // Get TFTP root
            strTFTPdir = GetATSRegValueString(strRegTFTP_root);

            // Get DHCP config
            dhcpConfig = GetATSRegValueInt(strRegDHCPconfig);

            configured = GetATSRegValueInt(strRegConfigured);

            managedMode = GetATSRegValueInt(strRegManagedMode);

            runFirstTime = GetATSRegValueInt(strRegRunFirstTime);

            // Currently only the 3.0 version of the drivers are supported
            SelectedGraphicsAdaptersFile = GraphicsAdaptersA;
            SelectedNicAdaptersFile = NicAdaptersA;
            SelectedSoundAdaptersFile = SoundAdaptersA;

        }

        // Get a registry string
        public static string GetATSRegValueString(string regValue)
        {
            return GetRegValue(strATSregRoot, regValue);
        }


        // Get a registry integer from the application key
        public static int GetATSRegValueInt(string regValue)
        {
            return GetRegValueInt(strATSregRoot, regValue);
        }

        // Set a registry integer in the the application key
        public static void SetATSRegValue(string regValue, int value)
        {
            SetRegValue(strATSregRoot, regValue, value);
        }

        // Set a registry string in the the application key
        public static void SetATSRegValue(string regValue, string value)
        {
            SetRegValue(strATSregRoot, regValue, value);
        }

        // Get a registry string
        public static string GetRegValue(string regKey, string regValue)
        {
            Microsoft.Win32.RegistryKey objRegkey;
            
            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey);
            }
            catch (ArgumentNullException ex)
            {
                MessageBox.Show("Error when reading from registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (22411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", ex.Message, System.Environment.NewLine, ex.ToString())))
                {
                    using (log4net.NDC.Push("Installation info missing."))
                    {
                        Logging.ATSAdminLog.Error("Error when reading from registry.");
                    }
                }
                Application.Exit();
                return "";
            }
            catch (SecurityException ex)
            {
                MessageBox.Show("Error when reading from registry. You do not have the necessary permission (22412). Key: "+ regKey + " Value: " + regValue + " Error details:" + ex.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", ex.Message, System.Environment.NewLine, ex.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid users rights."))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return "";
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error when reading from registry (22413). Key: " + regKey + " Value: " + regValue + " Error details:" + ex.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", ex.Message, System.Environment.NewLine, ex.ToString())))
                {
                    Logging.ATSAdminLog.Error("Error when reading from registry.");                   
                }
                Application.Exit();
                return "";
            }
            
            if (objRegkey != null)
            {
                if (objRegkey.GetValue(regValue) != null)
                {
                    try
                    {
                        return objRegkey.GetValue(regValue).ToString();
                    }
                    catch (Exception e)
                    {
                        MessageBox.Show("Error when reading from registry (22414). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                        using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                        Application.Exit();
                        return "";
                    }
                }
                else
                {
                    MessageBox.Show("Error when reading from registry (55222). Value missing. Key: " + regKey + " Value: " + regValue);
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Value is missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                    Application.Exit();
                    return "";
                }
            }
            else
            {
                MessageBox.Show("Error when reading from registry (55221). Key missing. Key: " + regKey + " Value: " + strRegTFTP_root);
                using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                {
                    using (log4net.NDC.Push("Key is missing"))
                    {
                        Logging.ATSAdminLog.Error("Error when reading from registry.");
                    }
                }
                Application.Exit();
            }
            return ""; // No value could be retrieved from registry
        }

        // Get a registry integer
        public static int GetRegValueInt(string regKey, string regValue)
        {
            Microsoft.Win32.RegistryKey objRegkey;

            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey);
            }
            catch (ArgumentNullException ex)
            {
                MessageBox.Show("Error when reading from registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (22411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", ex.Message, System.Environment.NewLine, ex.ToString())))
                {
                    using (log4net.NDC.Push("Installation info missing."))
                    {
                        Logging.ATSAdminLog.Error("Error when reading from registry.");
                    }
                }
                Application.Exit();
                return 0;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when reading from registry. You do not have the necessary permission (22412). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid user rights."))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return 0;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (22413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                        Logging.ATSAdminLog.Error("Error when reading from registry.");                  
                }
                Application.Exit();
                return 0;
            }

            if (objRegkey != null)
            {
                if (objRegkey.GetValue(regValue) != null)
                {
                    try
                    {
                        return (int)objRegkey.GetValue(regValue);
                    }
                    catch (Exception e)
                    {
                        MessageBox.Show("Error when reading from registry (22414). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                        using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                        {
                            using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                            {
                                    Logging.ATSAdminLog.Error("Error when reading from registry.");                                
                            }
                        }
                        Application.Exit();
                        return 0;
                    }
                }
                else
                {
                    MessageBox.Show("Error when reading from registry (55222). Value missing. Key: " + regKey + " Value: " + regValue);
                    using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                    {
                        using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                        {
                            using (log4net.NDC.Push("Value is missing"))
                            {
                                Logging.ATSAdminLog.Error("Error when reading from registry.");
                            }
                        }
                    }
                    Application.Exit();
                    return 0;
                }
            }
            else
            {
                MessageBox.Show("Error when reading from registry (55221). Key missing. Key: " + regKey + " Value: " + regValue);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Key is missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
            }
            return 0; // No value could be retrieved from registry
        }

        // Set a registry integer
        public static void SetRegValue(string regKey, string regValue, int value)
        {
            Microsoft.Win32.RegistryKey objRegkey;

            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey,true);
            }
            catch (ArgumentNullException e)
            {
                MessageBox.Show("Error when writing to registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (62411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                        using (log4net.NDC.Push("Installation info missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when writing to registry.");
                        }                    
                }
                Application.Exit();
                return;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when writing to registry. You do not have the necessary permission (62412). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid user rights"))
                        {
                            Logging.ATSAdminLog.Error("Error when writing to registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (62413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");                        
                    }
                }
                Application.Exit();
                return;
            }

            if (objRegkey != null)
            {
                try
                {
                    objRegkey.SetValue(regValue, value);
                }
                catch (Exception e)
                {
                    MessageBox.Show("Error when writing to registry (62414). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                    using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                    {
                        using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                        {
                                Logging.ATSAdminLog.Error("Error when writing to registry.");                            
                        }
                    }
                    Application.Exit();
                }
            }
            else
            {
                MessageBox.Show("Error when writing to registry (65222). Key missing. Key: " + regKey + " Value: " + regValue);
                
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Key is missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when writing to registry.");
                        }                        
                    }
                
                Application.Exit();
            }
        }

        // Set a registry string
        public static void SetRegValue(string regKey, string regValue, string value)
        {
            Microsoft.Win32.RegistryKey objRegkey;

            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey, true);
            }
            catch (ArgumentNullException e)
            {
                MessageBox.Show("Error when writing to registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (62411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        Logging.ATSAdminLog.Error("Error when writing to registry.");
                    }
                }
                Application.Exit();
                return;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when writing to registry. You do not have the necessary permission (62412). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid user rights"))
                        {
                            Logging.ATSAdminLog.Error("Error when writing to registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (62413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }                   
                }
                Application.Exit();
                return;
            }

            if (objRegkey != null)
            {
                try
                {
                    objRegkey.SetValue(regValue, value);
                }
                catch (Exception e)
                {
                    MessageBox.Show("Error when writing to registry (62414). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                    using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                    {
                        using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                        {
                                Logging.ATSAdminLog.Error("Error when writing to registry.");                           
                        }
                    }
                    Application.Exit();
                }
            }
            else
            {
                MessageBox.Show("Error when writing to registry (65222). Key missing. Key: " + regKey + " Value: " + regValue);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Key is missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when writing to registry.");
                        }
                    }
                }
                Application.Exit();
            }
        }

        // Check if a registry int value exists
        public static bool RegValueExists(string regKey, string regValue)
        {
            Microsoft.Win32.RegistryKey objRegkey;

            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey);
            }
            catch (ArgumentNullException)
            {
                MessageBox.Show("Error when reading from registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (29411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Installation info missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return false;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when reading from registry. You do not have the necessary permission (29412). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid user rights"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return false;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (29413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");                        
                    }
                }
                Application.Exit();
                return false;
            }

            if (objRegkey != null)
            {
                if (objRegkey.GetValue(regValue) != null)
                {
                    return true; // We could retrive the value
                }
                else
                {
                    return false; // No value found
                }
            }
            else
            {
                MessageBox.Show("Error when reading from registry (59221). Key missing. Key: " + regKey + " Value: " + strRegTFTP_root);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Key is missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
            }
            return false; // No value could be retrieved from registry
        }

        // Validate MAC a MAC address.
        public static string IsValidMAC(string macAddress)
        {
            macAddress = macAddress.Replace(":", "");
            macAddress = macAddress.ToUpper();
            string result = "";
            Regex rx = new Regex("([0-9a-fA-F][0-9a-fA-F]-){5}([0-9a-fA-F][0-9a-fA-F])", RegexOptions.IgnoreCase);
            Match m = rx.Match(macAddress);
            result = m.Groups[0].Value;
            if (result.Length == 17)
            {
                return result;
            }
            else
            {
                rx = new Regex("([0-9a-fA-F][0-9a-fA-F]){5}([0-9a-fA-F][0-9a-fA-F])", RegexOptions.IgnoreCase);
                Match m2 = rx.Match(macAddress);
                result = m2.Groups[0].Value;
                if (result.Length == 12)
                {
                    return result;
                }
                return result;
            }
        }

        // Try to extract a mac address from an ATS client name in the format 'ATSxxxxxxxxxxxx', where xxxxxxxxxx is a mac address.
        public static string GetMacFromATSname(string name)
        {
            string strMac;
            if (name.Length != 15)
            {
                return ""; // Not an ATS name       
            }
            if (!name.StartsWith("ATS"))
            {
                return ""; // Not an ATS name       
            }
            strMac = ATSGlobals.IsValidMAC(name.Substring(3));
            if (strMac == "")
            {
                return ""; // Not an ATS name       
            }
            // We have a MAC address
            return strMac;
        }

        // Create all needed registry values
        public static void CreateRegistryValues()
        {
            // Create registry values for ATS Admin Application
            CreateRegistryValue(strATSregRoot, "CheckUpdate", 1);
            CreateRegistryValue(strATSregRoot, strRegConfigured, 0);
            CreateRegistryValue(strATSregRoot, ProSupport.strRegDatabaseDir, "");
            CreateRegistryValue(strATSregRoot, ProSupport.strRegDatabaseServer, "");
            CreateRegistryValue(strATSregRoot, ProSupport.strRegDestDir, "");
            CreateRegistryValue(strATSregRoot, strRegDHCPconfig , 0);
            CreateRegistryValue(strATSregRoot, strRegManagedMode, 1);
            CreateRegistryValue(strATSregRoot, strRegTerminalServer, 0);
            CreateRegistryValue(strATSregRoot, strRegTFTPconfig, 0);
            CreateRegistryValue(strATSregRoot, strRegTFTP_root,"");

            // Check if the admin app is intalled on this computer and if so, add reg values for TFTP 32
            if (RegValueExists(strATSregRoot, strRegAdminVersion))
            {   // The admin app is installed, define keys for TFTP32. These should not be installed for the control panel.
                // Create registry values for TFTPD32
                CreateRegistryValue(strTFTPD32RegRoot, "BaseDirectory", "");
                CreateRegistryValue(strTFTPD32RegRoot, "Beep", 0);
                CreateRegistryValue(strTFTPD32RegRoot, "DirText", 0);
                CreateRegistryValue(strTFTPD32RegRoot, "Hide", 0);
                CreateRegistryValue(strTFTPD32RegRoot, "LastWindowPos", "60 49 860 642 ");
                CreateRegistryValue(strTFTPD32RegRoot, "LocalIP", "");
                CreateRegistryValue(strTFTPD32RegRoot, "MaxRetransmit", 6);
                CreateRegistryValue(strTFTPD32RegRoot, "Negociate", 1);
                CreateRegistryValue(strTFTPD32RegRoot, "PXECompatibility", 0);
                CreateRegistryValue(strTFTPD32RegRoot, "SaveSyslogFile", "");
                CreateRegistryValue(strTFTPD32RegRoot, "SecurityLevel", 1);
                CreateRegistryValue(strTFTPD32RegRoot, "Services", 2);
                CreateRegistryValue(strTFTPD32RegRoot, "ShowProgressBar", 0);
                CreateRegistryValue(strTFTPD32RegRoot, "TftpLogFile", "");
                CreateRegistryValue(strTFTPD32RegRoot, "TftpPort", 69);
                CreateRegistryValue(strTFTPD32RegRoot, "Timeout", 3);
                CreateRegistryValue(strTFTPD32RegRoot, "UnixStrings", 1);
                CreateRegistryValue(strTFTPD32RegRoot, "VirtualRoot", 1);
                CreateRegistryValue(strTFTPD32RegRoot, "WinSize", 0);

                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "AddOptionNumber1", 0);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "AddOptionNumber2", 0);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "AddOptionValue1", "");
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "AddOptionValue2", "");
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "BootFile", "client.zpxe");
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "DNS", 16834314);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "DomainName", "");
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "Gateway", 16834314);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "IP_Pool", 335601418);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "Mask", 65535);
                CreateRegistryValue(strTFTPD32RegRoot + @"\DHCP", "PoolSize", 200);
            }            
        }

        // If a registry key does not exist, create it with the given default value
        public static void CreateRegistryValue(string regKey, string regValue, int value)
        {
            Microsoft.Win32.RegistryKey objRegkey;
            
            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey);
            }
            catch (ArgumentNullException e)
            {
                MessageBox.Show("Error when reading from registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (92411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Installation info missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when reading from registry. You do not have the necessary permission (92412). Key: "+ regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid user rights"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (92413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        
                    }
                }
                Application.Exit();
                return;
            }
            
            if (objRegkey != null)
            {
                if (objRegkey.GetValue(regValue) == null)
                {   // No reg value, create one
                    SetRegValue(regKey, regValue, value);
                }
            }
            else
            {
                MessageBox.Show("Error when reading from registry (95221). Key missing. Key: " + regKey + " Value: " + strRegTFTP_root);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");                        
                    }
                }
                Application.Exit();
            }
        }



        // If a registry key does not exist, create it with the given default value
        public static void CreateRegistryValue(string regKey, string regValue, string value)
        {
            Microsoft.Win32.RegistryKey objRegkey;

            try
            {
                objRegkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regKey);
            }
            catch (ArgumentNullException e)
            {
                MessageBox.Show("Error when reading from registry. Installation info missing, please run the " + ATSGlobals.ApplicationName + " installation program. (92411)");
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Installation info missing"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (SecurityException e)
            {
                MessageBox.Show("Error when reading from registry. You do not have the necessary permission (92412). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                        using (log4net.NDC.Push("Invalid users rights"))
                        {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");
                        }
                    }
                }
                Application.Exit();
                return;
            }
            catch (Exception e)
            {
                MessageBox.Show("Error when reading from registry (92413). Key: " + regKey + " Value: " + regValue + " Error details:" + e.Message);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");                        
                    }
                }
                Application.Exit();
                return;
            }

            if (objRegkey != null)
            {
                if (objRegkey.GetValue(regValue) == null)
                {   // No reg value, create one
                    SetRegValue(regKey, regValue, value);
                }
            }
            else
            {
                MessageBox.Show("Error when reading from registry (95221). Key missing. Key: " + regKey + " Value: " + strRegTFTP_root);
                using (log4net.NDC.Push(string.Format("SqlException: MESSAGE={0}{1}Diagnostics:{1}{2}", e.Message, System.Environment.NewLine, e.ToString())))
                {
                    using (log4net.NDC.Push(string.Format("key={0} value={1}", regKey, regValue)))
                    {
                            Logging.ATSAdminLog.Error("Error when reading from registry.");                       
                    }
                }
                Application.Exit();
            }
        }

        // Extract two integers from a string, separated by a character
        // Result: True = extraction ok, false = invalid string.
        // twointegers: String with two integers, separated by a character
        // separator: the character separating the strings
        // value1: (out) The first integer in the string
        // value2: (out) The second integer in the string
        public static bool ExtractIntegers(string twointegers, char separator, out int value1, out int value2)
        {
            string[] parts;
            value1 = 0; // Default
            value2 = 0; // Default
            parts = twointegers.Split(separator);
            if (parts.Length != 2)
            {
                return false;
            }
            // Convert and return
            value1 = Convert.ToInt32(parts[0]); // Default
            value2 = Convert.ToInt32(parts[1]); // Default
            return true;
        }

    } // Class ATSGlobals
} // Namespace Anywhere TS