CalculateHash

.editorconfig

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+[*]
+end_of_line              = crlf
+charset                  = utf-8
+indent_style             = tab
+indent_size              = tab
+trim_trailing_whitespace = true
+[*.yml]
+indent_style = space
+indent_size  = 2

.github/workflows/build.yml

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+name: Build & Test
+on:
+  push:
+    branches: [ main, HashCalc ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 5.0.100
+    - name: Install dependencies
+      run: dotnet restore Examples.sln
+    - name: Install Steam and Garry's Mod Dedicated Server
+      run: |
+        wget https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz
+        tar -xvzf steamcmd_linux.tar.gz
+        rm -rfv steamcmd_linux.tar.gz
+        ./steamcmd.sh +login anonymous +force_install_dir gmod "+app_update 4020 -beta x86-64 validate" +quit
+    - name: Install GmodDotNet
+      run: |
+        wget https://gleb-krasilich.fra1.digitaloceanspaces.com/GmodNETStorage/storage/gmod-dot-net-linux.0.7.0-beta.2.30293992.master.tar.gz -O gmoddotnet.tar.gz
+        mkdir ./gmod/garrysmod/lua/bin
+        tar -xvzf gmoddotnet.tar.gz -C ./gmod/garrysmod/lua/bin
+        rm -rfv gmoddotnet.tar.gz
+    - name: Build Module
+      run: dotnet publish HashCalc/HashCalc.csproj --configuration Release --framework net5 -o ./gmod/garrysmod/lua/bin/Modules/HashCalc
+    - name: Upload a Build Artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: HashCalc linux-x64
+        path: ./gmod/garrysmod/lua/bin/Modules/HashCalc/*
+        retention-days: 10
+    - name: Copy test.lua
+      run: cp .github/workflows/test.lua ./gmod/garrysmod/lua/autorun
+    - name: Run Garry's Mod
+      run: ./srcds_run_x64 -game garrysmod -systemtest -condebug +sv_hibernate_think 1 || true
+      working-directory: ./gmod/
+      timeout-minutes: 1
+      continue-on-error: true
+    - name: Print log
+      run: cat gmod/garrysmod/console.log
+    - name: Tests successfull?
+      uses: andstor/file-existence-action@v1
+      with:
+        files: "gmod/garrysmod/data/success.txt"
+        allow_failure: true
+  windows-build:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET Core SDK
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 5.0.100
+    - name: Install dependencies
+      run: dotnet restore Examples.sln
+    - name: Install Steam and Garry's Mod Dedicated Server
+      shell: bash
+      run: |
+           curl https://steamcdn-a.akamaihd.net/client/installer/steamcmd.zip -O -L
+           powershell -Command 'Expand-Archive -LiteralPath ./steamcmd.zip -DestinationPath ./'
+           ./steamcmd.exe +login anonymous +force_install_dir gmod "+app_update 4020 -beta x86-64 validate" +quit || true
+    - name: Install GmodDotNet
+      shell: bash
+      run: |
+        curl -o gmoddotnet.zip https://gleb-krasilich.fra1.digitaloceanspaces.com/GmodNETStorage/storage/gmod-dot-net-windows.0.7.0-beta.2.30293992.master.zip -O -L
+        mkdir ./gmod/garrysmod/lua/bin
+        powershell -Command 'Expand-Archive -LiteralPath ./gmoddotnet.zip -DestinationPath ./gmod/garrysmod/lua/bin'
+    - name: Build Module
+      run: dotnet publish HashCalc/HashCalc.csproj --configuration Release --framework net5 -o ./gmod/garrysmod/lua/bin/Modules/HashCalc
+    - name: Upload a Build Artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: HashCalc win-x64
+        path: ./gmod/garrysmod/lua/bin/Modules/HashCalc/*
+        retention-days: 10
+    - name: Copy test.lua
+      run: cp .github/workflows/test.lua ./gmod/garrysmod/lua/autorun
+    - name: Run Garry's Mod
+      shell: bash
+      run: |
+           powershell -Command './gmod/srcds_win64.exe -console -systemtest -condebug -game "garrysmod" +exec "server.cfg" +gamemode sandbox +map gm_construct +maxplayers 16 +sv_hibernate_think 1'
+           powershell -Command 'Wait-Process -Name srcds_win64'
+      continue-on-error: true
+    - name: Print log
+      shell: bash
+      run: cat gmod/garrysmod/console.log
+    - name: Tests successfull?
+      id: check_files
+      uses: andstor/file-existence-action@v1
+      with:
+        files: "gmod/garrysmod/data/success.txt"
+        allow_failure: true
+  macos-build:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 5.0.100
+    - name: Install dependencies
+      run: dotnet restore Examples.sln
+    - name: Build Module
+      run: dotnet publish Examples.sln --configuration Release --framework net5
+    - name: Upload a Build Artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: HashCalc osx-x64
+        path: HashCalc/bin/Release/net5/osx-x64/publish/*
+        retention-days: 10

.github/workflows/test.lua

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+hook.Add("Tick", "Template_CloseServer", engine.CloseServer)
+require("dotnet")
+
+local function run_test()
+	local module_loaded = dotnet.load("HashCalc")
+	assert(module_loaded)
+
+	--------SHA256--------
+
+	local sha256 = CalculateHash("SHA256","test")
+	assert(sha256==string.upper("9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"))
+
+	local sha256_unicode = CalculateHash("SHA256","☭")
+	assert(sha256_unicode==string.upper("d7f6fc82e3665ba40899bbf7bf6dc6f5c7f349ea054f6360c1d983f01c07601a"))
+
+	---------MD5----------
+
+	local md5 = CalculateHash("MD5","test")
+	assert(md5==string.upper("098f6bcd4621d373cade4e832627b4f6"))
+
+	local md5_unicode = CalculateHash("MD5","☭")
+	assert(md5_unicode==string.upper("7da15a125400bc658992457c218d7d47"))
+
+	--------SHA512--------
+
+	local sha512 = CalculateHash("SHA512","test")
+	assert(sha512==string.upper("ee26b0dd4af7e749aa1a8ee3c10ae9923f618980772e473f8819a5d4940e0db27ac185f8a0e1d5f84f88bc887fd67b143732c304cc5fa9ad8e6f57f50028a8ff"))
+
+	local sha512_unicode = CalculateHash("SHA512","☭")
+	assert(sha512_unicode==string.upper("52d54669d285a26c36374220204ea3e7ac480a7ef1d39cd5af0a6852309caa46faf19ebf0122eccae9ae4d4575b805e162a0b725c92aa43fd9a169835fea1734"))
+
+	----------------------
+
+	local module_unloaded = dotnet.unload("HashCalc")
+	assert(module_unloaded)
+end
+
+run_test()
+
+print("tests are successful!")
+file.Write("success.txt", "done")

.gitignore

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+.vs
+bin
+obj

Examples.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30803.129
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "HashCalc", "HashCalc\HashCalc.csproj", "{5849F24D-B5D7-4A48-9469-021DEE4B8531}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{342AA3D8-AFF4-48DE-B97C-DE6E0CF35634}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+		.gitignore = .gitignore
+		.github\workflows\build.yml = .github\workflows\build.yml
+		README.md = README.md
+		.github\workflows\test.lua = .github\workflows\test.lua
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5849F24D-B5D7-4A48-9469-021DEE4B8531}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5849F24D-B5D7-4A48-9469-021DEE4B8531}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5849F24D-B5D7-4A48-9469-021DEE4B8531}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5849F24D-B5D7-4A48-9469-021DEE4B8531}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {27D856A3-D44D-42EB-AB15-26DF09A9E065}
+	EndGlobalSection
+EndGlobal

HashCalc/HashCalc.cs

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+using GmodNET.API;
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace NativeMath
+{
+	public class HashCalc : IModule
+	{
+		public string ModuleName => "HashCalc";
+
+		public string ModuleVersion => "0.0.1";
+
+		private List<GCHandle> handles;
+
+		[UnmanagedCallersOnly(CallConvs = new Type[] { typeof(CallConvCdecl) })]
+		private static int CalculateHash(IntPtr luaState)
+		{
+			ILua lua = GmodInterop.GetLuaFromState(luaState);
+			string hashName = lua.GetString(1);
+			string data = lua.GetString(2);
+			HashAlgorithm hashAlgorithm = HashAlgorithm.Create(hashName);
+			byte[] hash = hashAlgorithm.ComputeHash(Encoding.UTF8.GetBytes(data));
+			int hashLength = hash.Length;
+			StringBuilder builder = new();
+			for (int i = 0; i < hashLength; i++)
+			{
+				builder.Append(hash[i].ToString("X2"));
+			}
+			lua.PushString(builder.ToString());
+			return 1;
+		}
+
+		public void Load(ILua lua, bool is_serverside, ModuleAssemblyLoadContext assembly_context)
+		{
+			handles = new();
+
+			lua.PushSpecial(SPECIAL_TABLES.SPECIAL_GLOB);
+			unsafe
+			{
+				lua.PushCFunction(&CalculateHash);
+				lua.SetField(-2, "CalculateHash");
+			}
+			lua.Pop();
+		}
+
+		public void Unload(ILua lua)
+		{
+			foreach (var handle in handles)
+			{
+				handle.Free();
+			}
+			handles = null;
+		}
+	}
+}

HashCalc/HashCalc.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<OutputType>Library</OutputType>
+		<TargetFramework>net5</TargetFramework>
+	</PropertyGroup>
+	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+	  <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+	</PropertyGroup>
+	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+	  <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="GmodNET.API" Version="0.7.0-*" />
+	</ItemGroup>
+</Project>

HashCalc/nuget.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+    <add key="gmodnet-packages" value="https://pkgs.dev.azure.com/GmodNET/gmodnet-artifacts/_packaging/gmodnet-packages/nuget/v3/index.json" />
+  </packageSources>
+</configuration>