Add unit tests! woo!

FrappeMocha.csproj

@@ -47,17 +47,24 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Keygen.cs" />
-    <Compile Include="MainForm.cs">
+    <Compile Include="Keygen\KeygenBase.cs" />
+    <Compile Include="Keygen\KeygenProduct.cs" />
+    <Compile Include="Keygen\LicenseTypes.cs" />
+    <Compile Include="Keygen\Platforms\PlatformAndroid.cs" />
+    <Compile Include="Keygen\Platforms\PlatformJava.cs" />
+    <Compile Include="Keygen\Platforms\PlatformJavaScript.cs" />
+    <Compile Include="Keygen\Platforms\PlatformMac.cs" />
+    <Compile Include="Keygen\Platforms\PlatformWindows.cs" />
+    <Compile Include="FrmMain.cs">
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="MainForm.Designer.cs">
-      <DependentUpon>MainForm.cs</DependentUpon>
+    <Compile Include="FrmMain.Designer.cs">
+      <DependentUpon>FrmMain.cs</DependentUpon>
     </Compile>
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <EmbeddedResource Include="MainForm.resx">
-      <DependentUpon>MainForm.cs</DependentUpon>
+    <EmbeddedResource Include="FrmMain.resx">
+      <DependentUpon>FrmMain.cs</DependentUpon>
     </EmbeddedResource>
     <EmbeddedResource Include="Properties\Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>

FrappeMocha.sln

@@ -5,6 +5,8 @@ VisualStudioVersion = 15.0.28307.1022
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FrappeMocha", "FrappeMocha.csproj", "{04AB5523-E679-4628-8B8B-B928A5DA5107}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PlatformUnitTests", "PlatformUnitTests\PlatformUnitTests.csproj", "{CEF3A8CA-7FAA-416F-A1FD-2AB221A84AF8}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{04AB5523-E679-4628-8B8B-B928A5DA5107}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{04AB5523-E679-4628-8B8B-B928A5DA5107}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{04AB5523-E679-4628-8B8B-B928A5DA5107}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CEF3A8CA-7FAA-416F-A1FD-2AB221A84AF8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CEF3A8CA-7FAA-416F-A1FD-2AB221A84AF8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CEF3A8CA-7FAA-416F-A1FD-2AB221A84AF8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CEF3A8CA-7FAA-416F-A1FD-2AB221A84AF8}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

FrmMain.Designer.cs

@@ -0,0 +1,199 @@
+namespace FrappeMocha
+{
+    partial class FrmMain
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region PlatformWindows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(FrmMain));
+            this.cbxLicenseType = new System.Windows.Forms.ComboBox();
+            this.tbxCompanyUserName = new System.Windows.Forms.TextBox();
+            this.lblLicenseType = new System.Windows.Forms.Label();
+            this.lblCompanyUserName = new System.Windows.Forms.Label();
+            this.lblLicenseKey = new System.Windows.Forms.Label();
+            this.tbxLicenseKey = new System.Windows.Forms.TextBox();
+            this.btnSubmit = new System.Windows.Forms.Button();
+            this.lblProduct = new System.Windows.Forms.Label();
+            this.cbxProduct = new System.Windows.Forms.ComboBox();
+            this.lblPlatform = new System.Windows.Forms.Label();
+            this.cbxPlatform = new System.Windows.Forms.ComboBox();
+            this.SuspendLayout();
+            // 
+            // cbxLicenseType
+            // 
+            this.cbxLicenseType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.cbxLicenseType.FormattingEnabled = true;
+            this.cbxLicenseType.Items.AddRange(new object[] {
+            "Company License",
+            "Single User License"});
+            this.cbxLicenseType.Location = new System.Drawing.Point(12, 112);
+            this.cbxLicenseType.Name = "cbxLicenseType";
+            this.cbxLicenseType.Size = new System.Drawing.Size(146, 21);
+            this.cbxLicenseType.TabIndex = 0;
+            this.cbxLicenseType.SelectedIndexChanged += new System.EventHandler(this.cbxLicenseType_SelectedIndexChanged);
+            // 
+            // tbxCompanyUserName
+            // 
+            this.tbxCompanyUserName.Location = new System.Drawing.Point(12, 152);
+            this.tbxCompanyUserName.MaxLength = 80;
+            this.tbxCompanyUserName.Name = "tbxCompanyUserName";
+            this.tbxCompanyUserName.Size = new System.Drawing.Size(146, 20);
+            this.tbxCompanyUserName.TabIndex = 1;
+            this.tbxCompanyUserName.Text = "FrappeMocha";
+            // 
+            // lblLicenseType
+            // 
+            this.lblLicenseType.AutoSize = true;
+            this.lblLicenseType.Location = new System.Drawing.Point(9, 96);
+            this.lblLicenseType.Name = "lblLicenseType";
+            this.lblLicenseType.Size = new System.Drawing.Size(71, 13);
+            this.lblLicenseType.TabIndex = 2;
+            this.lblLicenseType.Text = "License Type";
+            // 
+            // lblCompanyUserName
+            // 
+            this.lblCompanyUserName.AutoSize = true;
+            this.lblCompanyUserName.Location = new System.Drawing.Point(9, 136);
+            this.lblCompanyUserName.Name = "lblCompanyUserName";
+            this.lblCompanyUserName.Size = new System.Drawing.Size(115, 13);
+            this.lblCompanyUserName.TabIndex = 3;
+            this.lblCompanyUserName.Text = "Company / User Name";
+            // 
+            // lblLicenseKey
+            // 
+            this.lblLicenseKey.AutoSize = true;
+            this.lblLicenseKey.Location = new System.Drawing.Point(9, 175);
+            this.lblLicenseKey.Name = "lblLicenseKey";
+            this.lblLicenseKey.Size = new System.Drawing.Size(65, 13);
+            this.lblLicenseKey.TabIndex = 4;
+            this.lblLicenseKey.Text = "License Key";
+            // 
+            // tbxLicenseKey
+            // 
+            this.tbxLicenseKey.Location = new System.Drawing.Point(12, 191);
+            this.tbxLicenseKey.Name = "tbxLicenseKey";
+            this.tbxLicenseKey.ReadOnly = true;
+            this.tbxLicenseKey.Size = new System.Drawing.Size(146, 20);
+            this.tbxLicenseKey.TabIndex = 5;
+            this.tbxLicenseKey.Click += new System.EventHandler(this.tbxLicenseKey_Click);
+            // 
+            // btnSubmit
+            // 
+            this.btnSubmit.Location = new System.Drawing.Point(12, 222);
+            this.btnSubmit.Name = "btnSubmit";
+            this.btnSubmit.Size = new System.Drawing.Size(146, 23);
+            this.btnSubmit.TabIndex = 6;
+            this.btnSubmit.Text = "Frappe Mocha";
+            this.btnSubmit.UseVisualStyleBackColor = true;
+            this.btnSubmit.Click += new System.EventHandler(this.btnSubmit_Click);
+            // 
+            // lblProduct
+            // 
+            this.lblProduct.AutoSize = true;
+            this.lblProduct.Location = new System.Drawing.Point(9, 56);
+            this.lblProduct.Name = "lblProduct";
+            this.lblProduct.Size = new System.Drawing.Size(44, 13);
+            this.lblProduct.TabIndex = 7;
+            this.lblProduct.Text = "Product";
+            // 
+            // cbxProduct
+            // 
+            this.cbxProduct.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.cbxProduct.FormattingEnabled = true;
+            this.cbxProduct.Location = new System.Drawing.Point(12, 72);
+            this.cbxProduct.Name = "cbxProduct";
+            this.cbxProduct.Size = new System.Drawing.Size(146, 21);
+            this.cbxProduct.TabIndex = 8;
+            this.cbxProduct.SelectedIndexChanged += new System.EventHandler(this.cbxProduct_SelectedIndexChanged);
+            // 
+            // lblPlatform
+            // 
+            this.lblPlatform.AutoSize = true;
+            this.lblPlatform.Location = new System.Drawing.Point(9, 13);
+            this.lblPlatform.Name = "lblPlatform";
+            this.lblPlatform.Size = new System.Drawing.Size(45, 13);
+            this.lblPlatform.TabIndex = 9;
+            this.lblPlatform.Text = "Platform";
+            // 
+            // cbxPlatform
+            // 
+            this.cbxPlatform.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.cbxPlatform.FormattingEnabled = true;
+            this.cbxPlatform.Location = new System.Drawing.Point(12, 29);
+            this.cbxPlatform.Name = "cbxPlatform";
+            this.cbxPlatform.Size = new System.Drawing.Size(146, 21);
+            this.cbxPlatform.TabIndex = 10;
+            this.cbxPlatform.SelectedIndexChanged += new System.EventHandler(this.cbxPlatform_SelectedIndexChanged);
+            // 
+            // FrmMain
+            // 
+            this.AcceptButton = this.btnSubmit;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.BackColor = System.Drawing.SystemColors.Window;
+            this.ClientSize = new System.Drawing.Size(173, 258);
+            this.Controls.Add(this.cbxPlatform);
+            this.Controls.Add(this.lblPlatform);
+            this.Controls.Add(this.cbxProduct);
+            this.Controls.Add(this.lblProduct);
+            this.Controls.Add(this.btnSubmit);
+            this.Controls.Add(this.tbxLicenseKey);
+            this.Controls.Add(this.lblLicenseKey);
+            this.Controls.Add(this.lblCompanyUserName);
+            this.Controls.Add(this.lblLicenseType);
+            this.Controls.Add(this.tbxCompanyUserName);
+            this.Controls.Add(this.cbxLicenseType);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
+            this.KeyPreview = true;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "FrmMain";
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
+            this.Text = "FrappeMocha";
+            this.Shown += new System.EventHandler(this.frmMain_Shown);
+            this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.frmMain_KeyPress);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.ComboBox cbxLicenseType;
+        private System.Windows.Forms.TextBox tbxCompanyUserName;
+        private System.Windows.Forms.Label lblLicenseType;
+        private System.Windows.Forms.Label lblCompanyUserName;
+        private System.Windows.Forms.Label lblLicenseKey;
+        private System.Windows.Forms.TextBox tbxLicenseKey;
+        private System.Windows.Forms.Button btnSubmit;
+        private System.Windows.Forms.Label lblProduct;
+        private System.Windows.Forms.ComboBox cbxProduct;
+        private System.Windows.Forms.Label lblPlatform;
+        private System.Windows.Forms.ComboBox cbxPlatform;
+    }
+}
+

Keygen.cs

@@ -1,379 +0,0 @@
-using System;
-using System.Text;
-
-namespace FrappeMocha
-{
-    public class Keygen
-    {
-        private int param_encoding;
-
-        public enum LicenseTypes
-        {
-            LicenseWindows3270 = 0x8c,
-            LicenseWindows5250 = 0x80,
-            LicenseWindows3812 = 0xa0,
-            LicenseWindowsTelnet = 0x9b,
-            LicenseJava3270 = 0x1e,
-            LicenseJava5250 = 0x1e,
-            LicenseJavaTelnet = 0x1b,
-            LicenseMac3270 = 0x5d,
-            LicenseMac5250 = 0x16,
-            LicenseMac3812 = 0x22,
-            LicenseMacTelnet = 0x5e,
-            LicenseMacKeyboard = 0xa5,
-            LicenseChrome3270 = 0xb3,
-            LicenseChrome5250 = 0xb2,
-            LicenseChromeTelnet = 0xb4,
-        }
-
-        public Keygen()
-        {
-            this.param_encoding = 0;
-        }
-
-
-        public string GenLicense(int type, string param_company, LicenseTypes license)
-        {
-            switch (license)
-            {
-                case LicenseTypes.LicenseWindows3270:
-                case LicenseTypes.LicenseWindows3812:
-                case LicenseTypes.LicenseWindows5250:
-                case LicenseTypes.LicenseWindowsTelnet:
-                    return GenLicenseWindows(type, param_company, license);
-
-                case LicenseTypes.LicenseJavaTelnet:
-                case LicenseTypes.LicenseJava3270:
-                    // case LicenseTypes.LicenseJava5250:
-                    return GenLicenseJava(type, param_company, license);
-
-                case LicenseTypes.LicenseMac3270:
-                case LicenseTypes.LicenseMac5250:
-                    return GenLicenseMacAlpha(type, param_company, license);
-
-                case LicenseTypes.LicenseMac3812:
-                case LicenseTypes.LicenseMacTelnet:
-                case LicenseTypes.LicenseMacKeyboard:
-                    return GenLicenseMacNum(type, param_company, license);
-
-                case LicenseTypes.LicenseChrome3270:
-                case LicenseTypes.LicenseChrome5250:
-                case LicenseTypes.LicenseChromeTelnet:
-                    return GenLicenseJavascript(type, param_company, license);
-            }
-            return "";
-        }
-
-        /**
-         * By far the easiest implemntation, everything was already in .NET :P
-         */
-        public string GenLicenseWindows(int type, string param_company, LicenseTypes license)
-        {
-            string param_lickey = type.ToString();
-            uint num1 = 0;
-            byte[] byteArray = this.StrToByteArray(param_company);
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((int) byteArray[index] >= 65 && (int) byteArray[index] <= 90)
-                    byteArray[index] += (byte) 32; // this is basically str.toLower()
-            }
-
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((int) byteArray[index] >= 65) // 'A'
-                    num1 += (uint) byteArray[index] + (uint) license;
-            }
-            uint num2 = num1 * (uint) param_lickey[0];
-            uint num3 = (uint) ((int) num2 * ((int) num2 & (int) byte.MaxValue) & (int) ushort.MaxValue);
-            if (num3 < 100U)
-                num3 = 2728U;
-
-            param_lickey = (param_lickey[0].ToString() + (object) num3) + '-' +
-                           (Int32) (DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
-
-
-            return param_lickey;
-        }
-
-        /**
-         * Pretty stright forward implementation as well
-         * .NET is just a copy of Java afterall
-         */
-        public string GenLicenseJava(int itype, string param_company, LicenseTypes license)
-        {
-            char type = (char) (itype + (int) 'A');
-            string param_lickey = type.ToString() + '@';
-            byte[] byteArray = this.StrToByteArray(param_company);
-            uint num1 = 0;
-
-            for (int b = 0; b < byteArray.Length; b++)
-            {
-                if (param_company.ToCharArray()[b] > ' ')
-                    num1 += param_company.ToCharArray()[b] + (uint) license;
-            }
-
-            uint num2 = num1 * (uint) param_lickey[0];
-            uint num3 = (uint) ((int) num2 * ((int) num2 & (int) byte.MaxValue) & (int) ushort.MaxValue);
-            param_lickey += (object) num3;
-            return param_lickey;
-        }
-
-        /**
-         * Now the fun stuff..
-         * 
-         * Beware! the Mac versions rely on datatype truncation
-         * It's a real pain in the ass to make sure the datatypes are all accurate
-         */
-        public string GenLicenseMacAlpha(int itype, string param_company, LicenseTypes license)
-        {
-            // must start with an 'a' or 'b;
-            char type = (char) (itype + (int) 'a');
-            string param_lickey = type.ToString();
-            byte[] byteArray = this.StrToByteArray(param_company);
-            short num1 = 0;
-
-            for (int b = 0; b < byteArray.Length; b++)
-            {
-                if (param_company.ToCharArray()[b] >= 0x21)
-                    num1 += (short) (param_company.ToCharArray()[b] + license);
-            }
-
-            ushort num2 = (ushort) (num1 * (short) param_lickey[0]);
-            param_lickey += (ushort) ((num2 & byte.MaxValue) * num2);
-            return param_lickey;
-        }
-
-        /**
-         * Beware! the Mac versions rely on datatype truncation
-         * It's a real pain in the ass to make sure the datatypes are all accurate
-         * 
-         * There's a special case for the MacKeyboard as it deviates from the rest of the algoritm
-         * The (byte) cast is extmely important
-         */
-        public string GenLicenseMacNum(int itype, string param_company, LicenseTypes license)
-        {
-            char type = (char) (itype + (int) '0');
-            string param_lickey = type.ToString();
-            uint num1 = 0;
-            byte[] byteArray = this.StrToByteArray(param_company);
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if (license == LicenseTypes.LicenseMacKeyboard && (byte) (byteArray[index] + 0xbf) < 0x1a)
-                {
-                    byteArray[index] += 32;
-                }
-                else if (license != LicenseTypes.LicenseMacKeyboard && byteArray[index] + 0xbf < 0x1a)
-                {
-                    byteArray[index] += 32;
-                }
-            }
-
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((int) byteArray[index] >= 0x41) // 'A'
-                    num1 += (uint) byteArray[index] + (uint) license;
-            }
-
-            uint num2 = (uint) (num1 * (int) param_lickey[0]);
-            num2 = (uint) (num2 * (num2 & byte.MaxValue) & ushort.MaxValue);
-            ulong num3 = 0xaa8;
-            if (99 < num2)
-            {
-                num3 = (ulong) num2;
-            }
-
-            param_lickey = param_lickey[0].ToString() + (object) num3;
-
-
-            return param_lickey;
-        }
-
-        /**
-         * This one was fun as well
-         * Found out that the license must end with "45" in order to validate
-         */
-        public string GenLicenseJavascript(int itype, string param_company, LicenseTypes license)
-        {
-            char type = (char) (itype + (int) '0');
-            string param_lickey = type.ToString();
-            ulong sum = 0;
-            byte[] byteArray = this.StrToByteArray(param_company);
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((ulong) byteArray[index] >= 65 && (ulong) byteArray[index] <= 90)
-                    byteArray[index] += 32; // this is basically str.toLower()
-            }
-
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((ulong) byteArray[index] >= 65 && (ulong) byteArray[index] <= 122)
-                {
-                    sum += byteArray[index] + (uint) license;
-                }
-            }
-            sum = sum * param_lickey[0];
-            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
-            if (sum < 100U)
-                sum = 2728U;
-
-            param_lickey = (param_lickey[0].ToString() + (object) sum) + '-' +
-                           (Int32) (DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds
-                           + "45"; // a little salt, as a treat
-
-            return param_lickey;
-        }
-
-
-        public bool CheckLicense(string param_lickey, string param_company, LicenseTypes license)
-        {
-            switch (license)
-            {
-                case LicenseTypes.LicenseWindows3270:
-                case LicenseTypes.LicenseWindows3812:
-                case LicenseTypes.LicenseWindows5250:
-                case LicenseTypes.LicenseWindowsTelnet:
-                    return CheckLicenseWindows(param_lickey, param_company, license);
-
-                case LicenseTypes.LicenseJavaTelnet:
-                case LicenseTypes.LicenseJava3270:
-                    // case LicenseTypes.LicenseJava5250:
-                    return CheckLicenseJava(param_lickey, param_company, license);
-
-                case LicenseTypes.LicenseMac3270:
-                case LicenseTypes.LicenseMac5250:
-                case LicenseTypes.LicenseMac3812:
-                case LicenseTypes.LicenseMacTelnet:
-                case LicenseTypes.LicenseMacKeyboard:
-                    return CheckLicenseMac(param_lickey, param_company, license);
-
-                case LicenseTypes.LicenseChrome3270:
-                case LicenseTypes.LicenseChrome5250:
-                case LicenseTypes.LicenseChromeTelnet:
-                    return CheckLicenseJavaScript(param_lickey, param_company, license);
-            }
-            return false;
-        }
-
-        /**
-         * All Javascript licenses need to end with "45" in order to validate
-         */
-        public bool CheckLicenseJavaScript(string param_lickey, string param_company, LicenseTypes license)
-        {
-            ulong sum = 0;
-            byte[] byteArray = this.StrToByteArray(param_company);
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((ulong) byteArray[index] >= 65 && (ulong) byteArray[index] <= 90)
-                    byteArray[index] += 32; // this is basically str.toLower()
-            }
-
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((ulong) byteArray[index] >= 65 && (ulong) byteArray[index] <= 122)
-                {
-                    sum += byteArray[index] + (uint) license;
-                }
-            }
-            sum = sum * param_lickey[0];
-            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
-            if (sum < 100U)
-                sum = 2728U;
-
-            if (!param_lickey.StartsWith(param_lickey[0].ToString() + (object) sum) || !param_lickey.EndsWith("45"))
-            {
-                return false;
-            }
-
-            return true;
-        }
-
-
-        /**
-         * @todo: write some sanity checks
-         */
-        public bool CheckLicenseJava(string param_lickey, string param_company, LicenseTypes license)
-        {
-            return true;
-        }
-
-
-        /**
-         * @todo: write some sanity checks
-         */
-        public bool CheckLicenseMac(string param_lickey, string param_company, LicenseTypes license)
-        {
-            return true;
-        }
-
-        public bool CheckLicenseWindows(string param_lickey, string param_company, LicenseTypes license)
-        {
-            uint num1 = 0;
-            if (param_company == null || param_company.Length < 2)
-                return false;
-            byte[] byteArray = this.StrToByteArray(param_company);
-            if (param_lickey == null || param_lickey.Length < 6)
-                return false;
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                // >= 'A' && <= 'Z'
-                if ((int) byteArray[index] >= 65 && (int) byteArray[index] <= 90)
-                    byteArray[index] += (byte) 32;
-            }
-            for (int index = 0; index < byteArray.Length; ++index)
-            {
-                if ((int) byteArray[index] >= 65) // 'A'
-                    num1 += (uint) byteArray[index] + (uint) license;
-            }
-            uint num2 = num1 * (uint) param_lickey[0];
-            uint num3 = (uint) ((int) num2 * ((int) num2 & (int) byte.MaxValue) & (int) ushort.MaxValue);
-            if (num3 < 100U)
-                num3 = 2728U;
-
-            if (param_lickey.StartsWith((param_lickey[0].ToString() ?? "") + (object) num3))
-            {
-                //this.aa = param_lickey.Substring(0, 1);
-                return true;
-            }
-            //this.aa = "";
-            return false;
-        }
-
-        public byte[] StrToByteArray(string str)
-        {
-            try
-            {
-                return Encoding.GetEncoding(this.param_encoding).GetBytes(str);
-            }
-            catch (Exception ex1)
-            {
-                try
-                {
-                    return Encoding.GetEncoding(0).GetBytes(str);
-                }
-                catch (Exception ex2)
-                {
-                    return new byte[1] {(byte) 63};
-                }
-            }
-        }
-
-        public string ByteArrayToStr(byte[] barr, int index, int length)
-        {
-            try
-            {
-                return Encoding.GetEncoding(this.param_encoding).GetString(barr, index, length);
-            }
-            catch (Exception ex1)
-            {
-                try
-                {
-                    return Encoding.GetEncoding(0).GetString(barr, index, length);
-                }
-                catch (Exception ex2)
-                {
-                    return "?";
-                }
-            }
-        }
-    }
-}

Keygen/KeygenBase.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text;
+
+namespace FrappeMocha.Keygen
+{
+    public abstract class KeygenBase
+    {
+        public const string CompanyLicense = "Company License";
+        public const string SingleUserLicense = "Single User License";
+
+        protected string Platform;
+        protected int ByteEncoding = 0;
+        public List<KeygenProduct> Products = new List<KeygenProduct>();
+
+        public abstract string Generate(int type, string paramCompany, LicenseTypes license);
+        public abstract bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license);
+
+
+        public virtual List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            List<string> licenses = new List<string>();
+            licenses.Add(CompanyLicense);
+            licenses.Add(SingleUserLicense);
+            return licenses;
+        }
+
+        public override string ToString()
+        {
+            return Platform;
+        }
+
+        public byte[] StrToByteArray(string str)
+        {
+            try
+            {
+                return Encoding.GetEncoding(this.ByteEncoding).GetBytes(str);
+            }
+            catch (Exception)
+            {
+                try
+                {
+                    return Encoding.GetEncoding(0).GetBytes(str);
+                }
+                catch (Exception)
+                {
+                    return new byte[1] { (byte)63 };
+                }
+            }
+        }
+
+        public string ByteArrayToStr(byte[] barr, int index, int length)
+        {
+            try
+            {
+                return Encoding.GetEncoding(this.ByteEncoding).GetString(barr, index, length);
+            }
+            catch (Exception)
+            {
+                try
+                {
+                    return Encoding.GetEncoding(0).GetString(barr, index, length);
+                }
+                catch (Exception)
+                {
+                    return "?";
+                }
+            }
+        }
+    }
+}

Keygen/KeygenProduct.cs

@@ -0,0 +1,35 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen
+{
+    public class KeygenProduct
+    {
+        public LicenseTypes Licence;
+        public string Description;
+
+        public KeygenProduct(LicenseTypes licence, string description, string platform)
+        {
+            Licence = licence;
+            Description = description + " for " + platform;
+        }
+
+        public override string ToString()
+        {
+            return Description;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is KeygenProduct product && Description == product.Description || 
+                   obj is string description && description == Description;
+        }
+
+        public override int GetHashCode()
+        {
+            var hashCode = -1651123971;
+            hashCode = hashCode * -1521134295 + Licence.GetHashCode();
+            hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Description);
+            return hashCode;
+        }
+    }
+}

Keygen/LicenseTypes.cs

@@ -0,0 +1,30 @@
+namespace FrappeMocha.Keygen
+{
+    public enum LicenseTypes
+    {
+        Windows3270 = 0x8c,
+        Windows5250 = 0x80,
+        Windows3812 = 0xa0,
+        WindowsTelnet = 0x9b,
+
+        Java3270 = 0x1b + 2,
+        Java5250 = 0x1b + 2,
+        JavaTelnet = 0x1b,
+
+        Mac3270 = 0x5d,
+        Mac5250 = 0x16,
+        Mac3812 = 0x22,
+        MacTelnet = 0x5e,
+        MacKeyboard = 0xa5,
+
+        JavaScript3270 = 0xb3,
+        JavaScript5250 = 0xb2,
+        JavaScriptTelnet = 0xb4,
+
+        Android3270 = 0x94,
+        Android5250 = 0x91,
+        AndroidTelnet = 0x96,
+        AndroidVnc = 0x92,
+        AndroidBarcode = 0x9c,
+    }
+}

Keygen/Platforms/PlatformAndroid.cs

@@ -0,0 +1,101 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformAndroid : KeygenBase
+    {
+        public PlatformAndroid()
+        {
+            Platform = "Android";
+            Products.Add(new KeygenProduct(LicenseTypes.Android3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Android5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidTelnet, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidVnc, "VNC", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidBarcode, "Barcode", Platform));
+        }
+
+        /**
+         * This was also a piece of cake since PlatformJava is the underlying tech on PlatformAndroid
+         * The Dex object engine keept pretty good tabs on the types and var names as well!
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + '0');
+            string paramLicencekey = type.ToString();
+            long sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((long)byteArray[index] >= 'A' && (long)byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // this is basically str.toLower()
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 'A' && (ulong)byteArray[index] <= 'z')
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * paramLicencekey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            paramLicencekey = (paramLicencekey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
+
+            return paramLicencekey;
+        }
+
+        /**
+         * Straight outta da Dex
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            byte[] bArr = new byte[255];
+            byte[] bArr2 = new byte[255];
+            if (paramCompany.Length < 2 || paramLicenseKey.Length < 2)
+            {
+                return false;
+            }
+            for (int i = 0; i < paramLicenseKey.Length; i++)
+            {
+                bArr2[i] = (byte)paramLicenseKey[i];
+            }
+            for (int i2 = 0; i2 < paramCompany.Length; i2++)
+            {
+                bArr[i2] = (byte)paramCompany[i2];
+                if (paramCompany[i2] >= 'A' && paramCompany[i2] <= 'Z')
+                {
+                    bArr[i2] = (byte)(bArr[i2] + 32);
+                }
+            }
+            long j = 0;
+            for (int i3 = 0; i3 < paramCompany.Length; i3++)
+            {
+                if (bArr[i3] >= 65 && bArr[i3] <= 122)
+                {
+                    j += (bArr[i3] + (long)license);
+                }
+            }
+            long j2 = j * bArr2[0];
+            long j3 = (j2 * (j2 & 255)) & 65535;
+            if (j3 < 100)
+            {
+                j3 = 2728;
+            }
+            string sb = "";
+            sb += paramLicenseKey[0];
+            sb += (object)j3;
+            if (paramLicenseKey.StartsWith(sb))
+            {
+                // lictype = bArr2[0] - 48;
+                // is_lite2 = false;
+                return true;
+            }
+            // lictype = -1;
+            return false;
+        }
+    }
+}

Keygen/Platforms/PlatformJava.cs

@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformJava : KeygenBase
+    {
+        public PlatformJava()
+        {
+            Platform = "Java";
+            Products.Add(new KeygenProduct(LicenseTypes.Java3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Java5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaTelnet, "Telnet", Platform));
+        }
+
+        public override List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            List<string> types = new List<string>();
+            for (int i = 0; i < 5; i++)
+            {
+                types.Add(((char)(i + 'A')).ToString());
+            }
+            return types;
+        }
+
+        /**
+         * Pretty stright forward implementation as well
+         * .NET is just a copy of PlatformJava afterall
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + 'A');
+            string paramLicencekey = type.ToString() + '@';
+            int sum = 0;
+
+            int i = 0;
+            while (i < paramCompany.Length)
+            {
+                if (paramCompany[i] > ' ')
+                {
+                    // 3270 and 5250 have a hardcoded 0x1b+2 here, we've just added it to the enum
+                    sum += paramCompany[i] + (int)license;
+                }
+                ++i;
+            }
+
+            sum = sum * paramLicencekey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            paramLicencekey += sum.ToString();
+            return paramLicencekey;
+        }
+
+        /**
+         * Straight outta da JAR
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            int i = 0;
+            int n = 0;
+            while (i < paramCompany.Length)
+            {
+                if (paramCompany[i] > ' ')
+                {
+                    // 3270 and 5250 have a hardcoded 0x1b+2 here, we've just added it to the enum
+                    n += paramCompany[i] + (int)license;
+                }
+                ++i;
+            }
+            if (paramLicenseKey.Length > 0)
+            {
+                switch (paramLicenseKey[0])
+                {
+                    case 'A':
+                    case 'B':
+                    case 'C':
+                    case 'D':
+                    case 'E':
+                        break;
+
+                    default:
+                        return false;
+                }
+                int n2 = n * paramLicenseKey[0];
+                n2 = n2 * (n2 & 0xFF) & 0xFFFF;
+
+                string check = paramLicenseKey[0].ToString() + paramLicenseKey[1].ToString() + n2.ToString();
+                if (paramLicenseKey[1] == '@' && check == paramLicenseKey)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+}

Keygen/Platforms/PlatformJavaScript.cs

@@ -0,0 +1,83 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformJavaScript : KeygenBase
+    {
+        public PlatformJavaScript()
+        {
+            Platform = "Google Chrome";
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScript3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScript5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScriptTelnet, "Telnet", Platform));
+        }
+
+        /**
+         * This one was fun as well
+         * Found out that the license must end with "45" in order to validate
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + '0');
+            string param_lickey = type.ToString();
+            ulong sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A' && byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // ASCII 'Space'
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 'A' && (ulong)byteArray[index] <= 'z')
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * param_lickey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            param_lickey = (param_lickey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds
+                           + "45"; // a little salt, as a treat
+
+            return param_lickey;
+        }
+
+        /**
+         * Straight outta da JS
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            ulong sum = 0;
+            byte[] byteArray = this.StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 65 && (ulong)byteArray[index] <= 90)
+                    byteArray[index] += 32;
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 65 && (ulong)byteArray[index] <= 122)
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * paramLicenseKey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            if (!paramLicenseKey.StartsWith(paramLicenseKey[0].ToString() + sum) || !paramLicenseKey.EndsWith("45"))
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}

Keygen/Platforms/PlatformMac.cs

@@ -0,0 +1,140 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformMac : KeygenBase
+    {
+        public PlatformMac()
+        {
+            Platform = "MacOSX";
+            Products.Add(new KeygenProduct(LicenseTypes.Mac3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Mac5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Mac3812, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.MacTelnet, "Telnet", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.MacKeyboard, "Keyboard", Platform));
+        }
+
+        public override List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            if (p.Licence != LicenseTypes.Mac3812 &&
+                p.Licence != LicenseTypes.MacTelnet &&
+                p.Licence != LicenseTypes.MacKeyboard)
+            {
+                return base.GenerateLicencetypes(p);
+            }
+            List<string> types = new List<string>();
+            types.Add("0");
+            return types;
+        }
+
+        public override string Generate(int type, string paramCompany, LicenseTypes license)
+        {
+            switch (license)
+            {
+                // Prefix Num
+                case LicenseTypes.Mac3270:
+                case LicenseTypes.Mac5250:
+                    return GeneratePrefixNumber(type, paramCompany, license);
+                
+                // Prefix Alpha
+                case LicenseTypes.Mac3812:
+                case LicenseTypes.MacTelnet:
+                case LicenseTypes.MacKeyboard:
+                    return GeneratePrefixAlpha(type, paramCompany, license);
+            }
+            return "";
+        }
+
+        /**
+         * @todo: write some sanity checks
+         * I doubt I'll be able to get something straight outta da Ghidra here...
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            switch (license)
+            {
+                // Prefix Num
+                case LicenseTypes.Mac3270:
+                case LicenseTypes.Mac5250:
+                    return true;
+
+                // Prefix Alpha
+                case LicenseTypes.Mac3812:
+                case LicenseTypes.MacTelnet:
+                case LicenseTypes.MacKeyboard:
+                    return true;
+            }
+            return false;
+        }
+
+
+        /**
+         * Now the fun stuff..
+         * 
+         * Beware! the PlatformMac versions rely on datatype truncation
+         * It's a real pain in the ass to make sure the datatypes are all accurate
+         */
+        public string GeneratePrefixAlpha(int itype, string param_company, LicenseTypes license)
+        {
+            // must start with an 'a' or 'b;
+            char type = (char)(itype + (int)'a');
+            string param_lickey = type.ToString();
+            ushort sum = 0;
+
+            for (int b = 0; b < param_company.Length; b++)
+            {
+                if (param_company[b] >= 0x21)
+                    sum += (ushort)(param_company[b] + license);
+            }
+
+            sum = (ushort)(sum * (short)param_lickey[0]);
+            param_lickey += (ushort)((sum & byte.MaxValue) * sum);
+            return param_lickey;
+        }
+
+        /**
+         * Beware! the PlatformMac versions rely on datatype truncation
+         * It's a real pain in the ass to make sure the datatypes are all accurate
+         * 
+         * There's a special case for the MacKeyboard as it deviates from the rest of the algoritm
+         * The (byte) cast is extmely important
+         */
+        public string GeneratePrefixNumber(int itype, string param_company, LicenseTypes license)
+        {
+            char type = (char)(itype + (int)'0');
+            string param_lickey = type.ToString();
+            uint num1 = 0;
+            byte[] byteArray = StrToByteArray(param_company);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (license == LicenseTypes.MacKeyboard && (byte)(byteArray[index] + 0xbf) < 0x1a)
+                {
+                    byteArray[index] += 32;
+                }
+                else if (license != LicenseTypes.MacKeyboard && byteArray[index] + 0xbf < 0x1a)
+                {
+                    byteArray[index] += 32;
+                }
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 0x41) // 'A'
+                    num1 += byteArray[index] + (uint)license;
+            }
+
+            uint num2 = (uint)(num1 * (int)param_lickey[0]);
+            num2 = (num2 * (num2 & byte.MaxValue) & ushort.MaxValue);
+            ulong num3 = 0xaa8;
+            if (99 < num2)
+            {
+                num3 = num2;
+            }
+
+            param_lickey = param_lickey[0].ToString() + num3;
+
+
+            return param_lickey;
+        }
+    }
+}

Keygen/Platforms/PlatformWindows.cs

@@ -0,0 +1,81 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformWindows : KeygenBase
+    {
+        public PlatformWindows()
+        {
+            Platform = "Windows";
+            Products.Add(new KeygenProduct(LicenseTypes.Windows3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Windows5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Windows3812, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.WindowsTelnet, "Telnet", Platform));
+        }
+        
+        public override string Generate(int type, string paramCompany, LicenseTypes license)
+        {
+            string licenseKey = type.ToString();
+            uint sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A' && byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // ASCII 'Space'
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A')
+                    sum += byteArray[index] + (uint)license;
+            }
+            sum = sum * licenseKey[0];
+            sum = (uint)((int)sum * ((int)sum & byte.MaxValue) & ushort.MaxValue);
+            if (sum < 100U)
+                sum = 2728U;
+
+            licenseKey = (licenseKey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
+
+
+            return licenseKey;
+        }
+
+        /**
+         * Straight outta da Assembley
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            uint num1 = 0;
+            if (paramCompany == null || paramCompany.Length < 2)
+                return false;
+            byte[] byteArray = this.StrToByteArray(paramCompany);
+            if (paramLicenseKey == null || paramLicenseKey.Length < 6)
+                return false;
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                // >= 'A' && <= 'Z'
+                if ((int)byteArray[index] >= 65 && (int)byteArray[index] <= 90)
+                    byteArray[index] += (byte)32;
+            }
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((int)byteArray[index] >= 65) // 'A'
+                    num1 += (uint)byteArray[index] + (uint)license;
+            }
+            uint num2 = num1 * (uint)paramLicenseKey[0];
+            uint num3 = (uint)((int)num2 * ((int)num2 & (int)byte.MaxValue) & (int)ushort.MaxValue);
+            if (num3 < 100U)
+                num3 = 2728U;
+
+            if (paramLicenseKey.StartsWith((paramLicenseKey[0].ToString() ?? "") + (object)num3))
+            {
+                //this.aa = param_lickey.Substring(0, 1);
+                return true;
+            }
+            //this.aa = "";
+            return false;
+        }
+    }
+}

MainForm.Designer.cs

@@ -1,189 +0,0 @@
-namespace FrappeMocha
-{
-    partial class MainForm
-    {
-        /// <summary>
-        /// Required designer variable.
-        /// </summary>
-        private System.ComponentModel.IContainer components = null;
-
-        /// <summary>
-        /// Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing)
-        {
-            if (disposing && (components != null))
-            {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
-        #region Windows Form Designer generated code
-
-        /// <summary>
-        /// Required method for Designer support - do not modify
-        /// the contents of this method with the code editor.
-        /// </summary>
-        private void InitializeComponent()
-        {
-            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
-            this.TypeDropDown = new System.Windows.Forms.ComboBox();
-            this.companytext = new System.Windows.Forms.TextBox();
-            this.label1 = new System.Windows.Forms.Label();
-            this.companyusernamelabel = new System.Windows.Forms.Label();
-            this.label3 = new System.Windows.Forms.Label();
-            this.licensebox = new System.Windows.Forms.TextBox();
-            this.submit = new System.Windows.Forms.Button();
-            this.label2 = new System.Windows.Forms.Label();
-            this.productSelect = new System.Windows.Forms.ComboBox();
-            this.SuspendLayout();
-            // 
-            // TypeDropDown
-            // 
-            this.TypeDropDown.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-            this.TypeDropDown.FormattingEnabled = true;
-            this.TypeDropDown.Items.AddRange(new object[] {
-            "Company License",
-            "Single User License"});
-            this.TypeDropDown.Location = new System.Drawing.Point(12, 65);
-            this.TypeDropDown.Name = "TypeDropDown";
-            this.TypeDropDown.Size = new System.Drawing.Size(146, 21);
-            this.TypeDropDown.TabIndex = 0;
-            this.TypeDropDown.SelectedIndexChanged += new System.EventHandler(this.TypeDropDown_SelectedIndexChanged);
-            // 
-            // companytext
-            // 
-            this.companytext.Location = new System.Drawing.Point(12, 105);
-            this.companytext.MaxLength = 80;
-            this.companytext.Name = "companytext";
-            this.companytext.Size = new System.Drawing.Size(146, 20);
-            this.companytext.TabIndex = 1;
-            this.companytext.Text = "FrappeMocha";
-            // 
-            // label1
-            // 
-            this.label1.AutoSize = true;
-            this.label1.Location = new System.Drawing.Point(9, 49);
-            this.label1.Name = "label1";
-            this.label1.Size = new System.Drawing.Size(71, 13);
-            this.label1.TabIndex = 2;
-            this.label1.Text = "License Type";
-            // 
-            // companyusernamelabel
-            // 
-            this.companyusernamelabel.AutoSize = true;
-            this.companyusernamelabel.Location = new System.Drawing.Point(9, 89);
-            this.companyusernamelabel.Name = "companyusernamelabel";
-            this.companyusernamelabel.Size = new System.Drawing.Size(115, 13);
-            this.companyusernamelabel.TabIndex = 3;
-            this.companyusernamelabel.Text = "Company / User Name";
-            // 
-            // label3
-            // 
-            this.label3.AutoSize = true;
-            this.label3.Location = new System.Drawing.Point(9, 128);
-            this.label3.Name = "label3";
-            this.label3.Size = new System.Drawing.Size(65, 13);
-            this.label3.TabIndex = 4;
-            this.label3.Text = "License Key";
-            // 
-            // licensebox
-            // 
-            this.licensebox.Location = new System.Drawing.Point(12, 144);
-            this.licensebox.Name = "licensebox";
-            this.licensebox.ReadOnly = true;
-            this.licensebox.Size = new System.Drawing.Size(146, 20);
-            this.licensebox.TabIndex = 5;
-            this.licensebox.Click += new System.EventHandler(this.licensebox_Click);
-            // 
-            // submit
-            // 
-            this.submit.Location = new System.Drawing.Point(12, 175);
-            this.submit.Name = "submit";
-            this.submit.Size = new System.Drawing.Size(146, 23);
-            this.submit.TabIndex = 6;
-            this.submit.Text = "Frappe Mocha";
-            this.submit.UseVisualStyleBackColor = true;
-            this.submit.Click += new System.EventHandler(this.submit_Click);
-            // 
-            // label2
-            // 
-            this.label2.AutoSize = true;
-            this.label2.Location = new System.Drawing.Point(12, 9);
-            this.label2.Name = "label2";
-            this.label2.Size = new System.Drawing.Size(44, 13);
-            this.label2.TabIndex = 7;
-            this.label2.Text = "Product";
-            // 
-            // productSelect
-            // 
-            this.productSelect.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-            this.productSelect.FormattingEnabled = true;
-            this.productSelect.Items.AddRange(new object[] {
-            "TN3270 for Windows",
-            "TN5250 for Windows",
-            "TN3812 for Windows",
-            "Telnet for Windows",
-            "TN3270 for Java",
-            "TN5250 for Java",
-            "Telnet for Java",
-            "TN3270 for Mac OS X",
-            "TN5250 for Mac OS X",
-            "TN3812 for Mac OS X",
-            "Telnet for Mac OS X",
-            "Keyboard for Mac OS X",
-            "TN3270 for Google Chrome",
-            "TN5250 for Google Chrome",
-            "Telnet for Google Chrome"});
-            this.productSelect.Location = new System.Drawing.Point(12, 25);
-            this.productSelect.Name = "productSelect";
-            this.productSelect.Size = new System.Drawing.Size(146, 21);
-            this.productSelect.TabIndex = 8;
-            this.productSelect.SelectedIndexChanged += new System.EventHandler(this.productSelect_SelectedIndexChanged);
-            // 
-            // MainForm
-            // 
-            this.AcceptButton = this.submit;
-            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
-            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.BackColor = System.Drawing.SystemColors.Window;
-            this.ClientSize = new System.Drawing.Size(173, 210);
-            this.Controls.Add(this.productSelect);
-            this.Controls.Add(this.label2);
-            this.Controls.Add(this.submit);
-            this.Controls.Add(this.licensebox);
-            this.Controls.Add(this.label3);
-            this.Controls.Add(this.companyusernamelabel);
-            this.Controls.Add(this.label1);
-            this.Controls.Add(this.companytext);
-            this.Controls.Add(this.TypeDropDown);
-            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
-            this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
-            this.KeyPreview = true;
-            this.MaximizeBox = false;
-            this.MinimizeBox = false;
-            this.Name = "MainForm";
-            this.Text = "FrappeMocha";
-            this.Shown += new System.EventHandler(this.MainForm_Shown);
-            this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.MainForm_KeyPress);
-            this.ResumeLayout(false);
-            this.PerformLayout();
-
-        }
-
-        #endregion
-
-        private System.Windows.Forms.ComboBox TypeDropDown;
-        private System.Windows.Forms.TextBox companytext;
-        private System.Windows.Forms.Label label1;
-        private System.Windows.Forms.Label companyusernamelabel;
-        private System.Windows.Forms.Label label3;
-        private System.Windows.Forms.TextBox licensebox;
-        private System.Windows.Forms.Button submit;
-        private System.Windows.Forms.Label label2;
-        private System.Windows.Forms.ComboBox productSelect;
-    }
-}
-

MainForm.cs

@@ -1,250 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Diagnostics;
-using System.Drawing;
-using System.Text;
-using System.Windows.Forms;
-
-namespace FrappeMocha
-{
-    public partial class MainForm : Form
-    {
-        protected Keygen frappeKeygen;
-        private char[] ficus = new char[6];
-        private object[] windowsLicenseTypeItems = new object[2];
-        private object[] macLicenseTypeItems = new object[1];
-        private object[] javaLicenseTypeItems = new object[5];
-
-        public MainForm()
-        {
-            InitializeComponent();
-            TypeDropDown.SelectedIndex = 0;
-            productSelect.SelectedIndex = 0;
-            frappeKeygen = new Keygen();
-            this.initDropDownMenuItems();
-        }
-
-        private void initDropDownMenuItems()
-        {
-            TypeDropDown.Items.CopyTo(windowsLicenseTypeItems, 0);
-
-            initJavaLicenseTypeItems();
-            initMacLicenseTypeItems();
-
-            TypeDropDown.Items.Clear();
-            TypeDropDown.Items.AddRange(this.windowsLicenseTypeItems);
-            TypeDropDown.SelectedIndex = 0;
-        }
-
-        private void initJavaLicenseTypeItems()
-        {
-            TypeDropDown.Items.Clear();
-            for (int i = 0; i < 5; i++)
-            {
-                TypeDropDown.Items.Add((char) ('A' + i));
-            }
-            TypeDropDown.Items.CopyTo(this.javaLicenseTypeItems, 0);
-        }
-
-        private void initMacLicenseTypeItems()
-        {
-            TypeDropDown.Items.Clear();
-            for (int i = 0; i < 1; i++)
-            {
-                TypeDropDown.Items.Add((char) ('0' + i));
-            }
-            TypeDropDown.Items.CopyTo(this.macLicenseTypeItems, 0);
-        }
-
-        private void submit_Click(object sender, EventArgs e)
-        {
-            switch (productSelect.SelectedIndex)
-            {
-                case 0:
-                    this.keygen(Keygen.LicenseTypes.LicenseWindows3270);
-                    break;
-
-                case 1:
-                    this.keygen(Keygen.LicenseTypes.LicenseWindows5250);
-                    break;
-
-                case 2:
-                    this.keygen(Keygen.LicenseTypes.LicenseWindows3812);
-                    break;
-
-                case 3:
-                    this.keygen(Keygen.LicenseTypes.LicenseWindowsTelnet);
-                    break;
-
-                case 4:
-                    this.keygen(Keygen.LicenseTypes.LicenseJava3270);
-                    break;
-
-                case 5:
-                    this.keygen(Keygen.LicenseTypes.LicenseJava5250);
-                    break;
-
-                case 6:
-                    this.keygen(Keygen.LicenseTypes.LicenseJavaTelnet);
-                    break;
-
-                case 7:
-                    this.keygen(Keygen.LicenseTypes.LicenseMac3270);
-                    break;
-
-                case 8:
-                    this.keygen(Keygen.LicenseTypes.LicenseMac5250);
-                    break;
-
-                case 9:
-                    this.keygen(Keygen.LicenseTypes.LicenseMac3812);
-                    break;
-
-                case 10:
-                    this.keygen(Keygen.LicenseTypes.LicenseMacTelnet);
-                    break;
-
-                case 11:
-                    this.keygen(Keygen.LicenseTypes.LicenseMacKeyboard);
-                    break;
-
-                case 12:
-                    this.keygen(Keygen.LicenseTypes.LicenseChrome3270);
-                    break;
-
-                case 13:
-                    this.keygen(Keygen.LicenseTypes.LicenseChrome5250);
-                    break;
-
-                case 14:
-                    this.keygen(Keygen.LicenseTypes.LicenseChromeTelnet);
-                    break;
-            }
-        }
-
-        private void TypeDropDown_SelectedIndexChanged(object sender, EventArgs e)
-        {
-            switch (TypeDropDown.SelectedIndex)
-            {
-                case 0:
-                    companyusernamelabel.Text = "Company Name";
-                    break;
-
-                case 1:
-                    companyusernamelabel.Text = "User Name";
-                    break;
-            }
-
-            if (TypeDropDown.Items.Count > 2)
-            {
-                companyusernamelabel.Text = "Name";
-            }
-
-            AcceptButton.PerformClick();
-        }
-
-        private void keygen(Keygen.LicenseTypes license)
-        {
-            if (companytext.Text.Length <= 1)
-            {
-                MessageBox.Show(
-                    (TypeDropDown.SelectedIndex == 0
-                        ? "Company Name"
-                        : "User Name") + " must be longer than one character", "Error",
-                    MessageBoxButtons.OK, MessageBoxIcon.Error);
-                return;
-            }
-
-            if (companytext.Text.Length > 80)
-            {
-                MessageBox.Show(
-                    (TypeDropDown.SelectedIndex == 0
-                        ? "Company Name"
-                        : "User Name") + " must not be greater than eighty characters", "Error",
-                    MessageBoxButtons.OK, MessageBoxIcon.Error);
-                return;
-            }
-
-            string genlicense = frappeKeygen.GenLicense(TypeDropDown.SelectedIndex, companytext.Text, license);
-            if (!frappeKeygen.CheckLicense(genlicense, companytext.Text, license))
-            {
-                MessageBox.Show("Generated license did not pass self check, please try again", "Warning",
-                    MessageBoxButtons.OK,
-                    MessageBoxIcon.Warning);
-
-                return;
-            }
-
-            licensebox.Text = genlicense;
-        }
-
-        private void productSelect_SelectedIndexChanged(object sender, EventArgs e)
-        {
-            switch (productSelect.SelectedIndex)
-            {
-                case 0:
-                case 1:
-                case 2:
-                case 3:
-                case 7: // mac type 1
-                case 8: // mac type 1
-                case 12:
-                    if (windowsLicenseTypeItems[0] != null)
-                    {
-                        TypeDropDown.Items.Clear();
-                        TypeDropDown.Items.AddRange(this.windowsLicenseTypeItems);
-                    }
-                    break;
-                case 4:
-                case 5:
-                case 6:
-                    TypeDropDown.Items.Clear();
-                    TypeDropDown.Items.AddRange(this.javaLicenseTypeItems);
-                    break;
-
-                case 9: // mac type 2
-                case 10:
-                case 11:
-                    TypeDropDown.Items.Clear();
-                    TypeDropDown.Items.AddRange(this.macLicenseTypeItems);
-                    break;
-            }
-            TypeDropDown.SelectedIndex = 0;
-            AcceptButton.PerformClick();
-        }
-
-        private void licensebox_Click(object sender, EventArgs e)
-        {
-            licensebox.SelectAll();
-        }
-
-        private void MainForm_Shown(object sender, EventArgs e)
-        {
-            AcceptButton.PerformClick();
-        }
-
-        private void MainForm_KeyPress(object sender, KeyPressEventArgs e)
-        {
-            Array.Copy(this.ficus, 1, this.ficus, 0, this.ficus.Length -1);
-            this.ficus[ficus.Length -1] = e.KeyChar;
-            if (new string (ficus) == "spicey")
-            {
-                switch (MessageBox.Show("Would you like a little salt, as a treat?", "Orly?", MessageBoxButtons.YesNoCancel,
-                    MessageBoxIcon.Question))
-                {
-                    case DialogResult.Yes:
-                        Process.Start("https://i.imgur.com/EJ31bmk.jpg");
-                        break;
-                    case DialogResult.No:
-                        Process.Start(
-                            "https://pics.me.me/white-people-cant-handle-spicy-food-um-try-again-sweetie-6626438.png");
-                        break;
-                    case DialogResult.Cancel:
-                        break;
-                }
-            }
-        }
-    }
-}

PlatformUnitTests/PlatformUnitTest.cs

@@ -0,0 +1,104 @@
+using System.Reflection;
+using FrappeMocha.Keygen;
+using FrappeMocha.Keygen.Platforms;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace PlatformUnitTests
+{
+    [TestClass]
+    public class PlatformUnitTest
+    {
+        private KeygenBase platform;
+        private readonly string[] _testCompanyUserStrings = {"Test", "FrappeMocha", "abcd", "1234"};
+
+        [TestMethod]
+        public void TestWindowsPlatform()
+        {
+            platform = new PlatformWindows();
+            foreach (var product in platform.Products)
+            {
+                var types = platform.GenerateLicencetypes(product);
+                for (int i = 0; i < types.Count; i++)
+                {
+                    foreach (string company in _testCompanyUserStrings)
+                    {
+                        var key = platform.Generate(i, company, product.Licence);
+                        Assert.IsTrue(platform.Check(key, company, product.Licence));
+                    }
+                }
+            }
+        }
+
+        [TestMethod]
+        public void TestMacOsxPlatform()
+        {
+            platform = new PlatformMac();
+            foreach (var product in platform.Products)
+            {
+                var types = platform.GenerateLicencetypes(product);
+                for (int i = 0; i < types.Count; i++)
+                {
+                    foreach (string company in _testCompanyUserStrings)
+                    {
+                        var key = platform.Generate(i, company, product.Licence);
+                        Assert.IsTrue(platform.Check(key, company, product.Licence));
+                    }
+                }
+            }
+        }
+
+        [TestMethod]
+        public void TestAndroidPlatform()
+        {
+            platform = new PlatformAndroid();
+            foreach (var product in platform.Products)
+            {
+                var types = platform.GenerateLicencetypes(product);
+                for (int i = 0; i < types.Count; i++)
+                {
+                    foreach (string company in _testCompanyUserStrings)
+                    {
+                        var key = platform.Generate(i, company, product.Licence);
+                        Assert.IsTrue(platform.Check(key, company, product.Licence));
+                    }
+                }
+            }
+        }
+
+        [TestMethod]
+        public void TestJavaPlatform()
+        {
+            platform = new PlatformJava();
+            foreach (var product in platform.Products)
+            {
+                var types = platform.GenerateLicencetypes(product);
+                for (int i = 0; i < types.Count; i++)
+                {
+                    foreach (string company in _testCompanyUserStrings)
+                    {
+                        var key = platform.Generate(i, company, product.Licence);
+                        Assert.IsTrue(platform.Check(key, company, product.Licence));
+                    }
+                }
+            }
+        }
+
+        [TestMethod]
+        public void TestJavaScriptPlatform()
+        {
+            platform = new PlatformJavaScript();
+            foreach (var product in platform.Products)
+            {
+                var types = platform.GenerateLicencetypes(product);
+                for (int i = 0; i < types.Count; i++)
+                {
+                    foreach (string company in _testCompanyUserStrings)
+                    {
+                        var key = platform.Generate(i, company, product.Licence);
+                        Assert.IsTrue(platform.Check(key, company, product.Licence));
+                    }
+                }
+            }
+        }
+    }
+}

PlatformUnitTests/PlatformUnitTests.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+
+    <ApplicationIcon />
+
+    <OutputType>Library</OutputType>
+
+    <StartupObject />
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.4.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.4.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FrappeMocha.csproj" />
+  </ItemGroup>
+
+</Project>

Program.cs

@@ -14,7 +14,7 @@ namespace FrappeMocha
         {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
-            Application.Run(new MainForm());
+            Application.Run(new FrmMain());
         }
     }
 }

frmMain.cs

@@ -0,0 +1,153 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Diagnostics;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+using FrappeMocha.Keygen;
+using FrappeMocha.Keygen.Platforms;
+
+namespace FrappeMocha
+{
+    public partial class FrmMain : Form
+    {
+        private char[] ficus = new char[6];
+        private Dictionary<string, KeygenBase> keygens = new Dictionary<string, KeygenBase>();
+        private string[] platforms = {"Windows", "MacOSX", "Java", "Google Chrome", "Android"};
+        private string[] companyUserName = {"Company Name", "User Name"};
+
+        public FrmMain()
+        {
+            InitializeComponent();
+            keygens.Add(platforms[0], new PlatformWindows());
+            keygens.Add(platforms[1], new PlatformMac());
+            keygens.Add(platforms[2], new PlatformJava());
+            keygens.Add(platforms[3], new PlatformJavaScript());
+            keygens.Add(platforms[4], new PlatformAndroid());
+
+            foreach (var item in keygens)
+            {
+                cbxPlatform.Items.Add(item.Value);
+            }
+
+            cbxPlatform.SelectedIndex = 0;
+        }
+
+        private string keygen(KeygenBase platform, KeygenProduct product, int type, string name)
+        {
+            if (name.Length <= 1)
+            {
+                MessageBox.Show( companyUserName[type] + " must be longer than one character", "Error",
+                    MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return "";
+            }
+
+            if (name.Length > 80)
+            {
+                MessageBox.Show( companyUserName[type] + " must not be greater than eighty characters", "Error",
+                    MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return "";
+            }
+
+            string genlicense = platform.Generate(type, name, product.Licence);
+            if (!platform.Check(genlicense, name, product.Licence))
+            {
+                MessageBox.Show("Generated license did not pass self check, please try again", "Warning",
+                    MessageBoxButtons.OK,
+                    MessageBoxIcon.Warning);
+            }
+
+            return genlicense;
+        }
+
+        private void frmMain_Shown(object sender, EventArgs e)
+        {
+            AcceptButton.PerformClick();
+        }
+
+        private void frmMain_KeyPress(object sender, KeyPressEventArgs e)
+        {
+            Array.Copy(ficus, 1, ficus, 0, ficus.Length - 1);
+            this.ficus[ficus.Length - 1] = e.KeyChar;
+            if (new string(ficus) == "spicey")
+            {
+                switch (MessageBox.Show("Would you like a little salt, as a treat?", "Orly?",
+                    MessageBoxButtons.YesNoCancel,
+                    MessageBoxIcon.Question))
+                {
+                    case DialogResult.Yes:
+                        Process.Start("https://i.imgur.com/EJ31bmk.jpg");
+                        break;
+                    case DialogResult.No:
+                        Process.Start(
+                            "https://pics.me.me/white-people-cant-handle-spicy-food-um-try-again-sweetie-6626438.png");
+                        break;
+                    case DialogResult.Cancel:
+                        break;
+                }
+            }
+        }
+
+        private void btnSubmit_Click(object sender, EventArgs e)
+        {
+            KeygenBase platform = (KeygenBase)cbxPlatform.SelectedItem;
+            KeygenProduct product = (KeygenProduct)cbxProduct.SelectedItem;
+            int type = cbxLicenseType.SelectedIndex;
+            string name = tbxCompanyUserName.Text;
+
+            tbxLicenseKey.Text = keygen(platform, product, type, name);
+        }
+
+        private void tbxLicenseKey_Click(object sender, EventArgs e)
+        {
+            tbxLicenseKey.SelectAll();
+        }
+
+        private void cbxPlatform_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            KeygenBase platform = (KeygenBase) cbxPlatform.SelectedItem;
+
+            cbxProduct.Enabled = false;
+            cbxProduct.Items.Clear();
+            foreach (var p in platform.Products)
+            {
+                cbxProduct.Items.Add(p);
+            }
+            cbxProduct.SelectedIndex = 0;
+            cbxProduct.Enabled = true;
+        }
+
+        private void cbxProduct_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            KeygenBase platform = (KeygenBase)cbxPlatform.SelectedItem;
+            KeygenProduct product = (KeygenProduct) cbxProduct.SelectedItem;
+
+            cbxLicenseType.Enabled = false;
+            cbxLicenseType.Items.Clear();
+            var LicenceTypes = platform.GenerateLicencetypes(product);
+            foreach (string type in LicenceTypes)
+            {
+                cbxLicenseType.Items.Add(type);
+            }
+            cbxLicenseType.Enabled = true;
+            cbxLicenseType.SelectedIndex = 0;
+            AcceptButton.PerformClick();
+        }
+
+        private void cbxLicenseType_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            if (cbxLicenseType.Items.Count != 2)
+            {
+                lblCompanyUserName.Text = "Name";
+            }
+            else
+            {
+                lblCompanyUserName.Text = companyUserName[cbxLicenseType.SelectedIndex];
+            }
+            AcceptButton.PerformClick();
+        }
+
+    }
+}