From 1438ec295871c97dedbed87b871f6963e5fb0ced Mon Sep 17 00:00:00 2001
From: vletroye <vletroye@gmail.com>
Date: Sat, 16 Jan 2021 18:10:23 +0100
Subject: [PATCH] Isolate the Checksum computation

---
 Hash/App.config                 |  6 ++++
 Hash/Hash.csproj                | 62 +++++++++++++++++++++++++++++++++
 Hash/Program.cs                 | 57 ++++++++++++++++++++++++++++++
 Hash/Properties/AssemblyInfo.cs | 36 +++++++++++++++++++
 4 files changed, 161 insertions(+)
 create mode 100644 Hash/App.config
 create mode 100644 Hash/Hash.csproj
 create mode 100644 Hash/Program.cs
 create mode 100644 Hash/Properties/AssemblyInfo.cs

diff --git a/Hash/App.config b/Hash/App.config
new file mode 100644
index 0000000..bae5d6d
--- /dev/null
+++ b/Hash/App.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/>
+    </startup>
+</configuration>
diff --git a/Hash/Hash.csproj b/Hash/Hash.csproj
new file mode 100644
index 0000000..4d9166a
--- /dev/null
+++ b/Hash/Hash.csproj
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{A88C4996-406E-4F26-BEE2-1D7ACB2BAB21}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Hash</RootNamespace>
+    <AssemblyName>Hash</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/Hash/Program.cs b/Hash/Program.cs
new file mode 100644
index 0000000..c6b6429
--- /dev/null
+++ b/Hash/Program.cs
@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Hash
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var path = ".";
+            if (args.Length > 0)
+                path = args[0];
+            if (path == ".") path = AppDomain.CurrentDomain.BaseDirectory;
+            ComputeMD5Hash(path);
+        }
+
+        static void ComputeMD5Hash(string path)
+        {
+            string hash = "";
+            var package = Path.Combine(path, "package.tgz");
+            var info = Path.Combine(path, "INFO");
+
+            using (var md5 = MD5.Create())
+            {
+                using (var stream = File.OpenRead(package))
+                {
+                    var hashByte = md5.ComputeHash(stream);
+                    hash = BitConverter.ToString(hashByte).Replace("-", "").ToLower();
+                }
+            }
+
+            if (File.Exists(info))
+            {
+                var lines = File.ReadAllLines(info);
+                using (StreamWriter outputFile = new StreamWriter(info))
+                {
+                    foreach (var line in lines)
+                    {
+                        var key = line.Substring(0, line.IndexOf('='));
+                        var value = line.Substring(line.IndexOf('=') + 1);
+                        value = value.Trim(new char[] { '"' });
+
+                        if (key != "checksum")
+                            outputFile.WriteLine("{0}=\"{1}\"", key, value);
+                    }
+                    outputFile.WriteLine("checksum=\"{0}\"", hash);
+                }
+            }
+        }
+    }
+}
diff --git a/Hash/Properties/AssemblyInfo.cs b/Hash/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..a354022
--- /dev/null
+++ b/Hash/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Hash")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Hash")]
+[assembly: AssemblyCopyright("Copyright ©  2021")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("a88c4996-406e-4f26-bee2-1d7acb2bab21")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]