Initial commit

2020-10-28 18:04:23 +01:00
commit fce5259634
4 changed files with 603 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,363 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
--- a/McAssetDownloader.csproj
+++ b/McAssetDownloader.csproj
@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+  </ItemGroup>
+
+</Project>
--- a/McAssetDownloader.sln
+++ b/McAssetDownloader.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29806.167
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "McAssetDownloader", "McAssetDownloader.csproj", "{42D6996F-3D98-476D-899A-08C31D7DDEFA}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{42D6996F-3D98-476D-899A-08C31D7DDEFA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{42D6996F-3D98-476D-899A-08C31D7DDEFA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{42D6996F-3D98-476D-899A-08C31D7DDEFA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{42D6996F-3D98-476D-899A-08C31D7DDEFA}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {CBD0A2D2-D14A-49F1-B4EF-CD26932A5ABA}
+	EndGlobalSection
+EndGlobal
--- a/Program.cs
+++ b/Program.cs
@@ -0,0 +1,203 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.IO.Compression;
+using System.IO;
+using System.Net.Http;
+using Newtonsoft.Json.Linq;
+using System.Diagnostics;
+
+namespace McAssetDownloader
+{
+    class Program
+    {
+        static async Task Main(string[] args)
+        {
+            var dm = new DownloadHelper();
+
+            if (args.Length != 2 || args[0].Equals("help", StringComparison.OrdinalIgnoreCase))
+            {
+                Console.WriteLine("Usage: McAssetDownloader.exe [version, e.g. 1.16.3] [target zip path]");
+                Console.WriteLine("Note: Versions below 1.7.3 will not work due to a different asset format");
+                Console.WriteLine();
+                Console.WriteLine("https://github.com/natanalt/mcassetdownloader <3");
+                return;
+            }
+
+            var versionName = args[0];
+            var archiveName = args[1];
+
+            if (File.Exists(archiveName))
+            {
+                Console.Write($"File {archiveName} already exists. Overwrite it? [Y/N] ");
+                var key = Console.ReadKey();
+                Console.WriteLine();
+                if (key.Key != ConsoleKey.Y)
+                {
+                    Console.WriteLine("Aborting.");
+                    return;
+                }
+            }
+
+            await dm.RetrieveVersionData();
+
+            var version = dm.CachedVersions.Find(x => x.Id == versionName);
+            if (version == null)
+            {
+                Console.WriteLine($"Version {versionName} not found");
+                return;
+            }
+
+            using var client = new HttpClient();
+            using var targetArchive = new ZipArchive(
+                new FileStream(
+                    archiveName,
+                    FileMode.Create,
+                    FileAccess.ReadWrite),
+                ZipArchiveMode.Create);
+
+            var meta = await dm.GetVersionMeta(versionName);
+            var assets = await dm.GetAssetIndexFor(meta);
+
+            Console.WriteLine("Retrieving client jar...");
+            using var clientRequest = await client.GetAsync(meta["downloads"]["client"].Value<string>("url"));
+            clientRequest.EnsureSuccessStatusCode();
+            using var clientStream = await clientRequest.Content.ReadAsStreamAsync();
+            using var clientArchive = new ZipArchive(clientStream, ZipArchiveMode.Read);
+
+            var readTotal = 0;
+            var totalFiles = assets.Count;
+            foreach (var entry in clientArchive.Entries)
+            {
+                var name = entry.FullName;
+                if (name != "assets/.mcassetsroot" && name.StartsWith("assets/"))
+                    totalFiles += 1;
+            }
+            totalFiles += 1; // pack.png
+
+            var stopwatch = new Stopwatch();
+            stopwatch.Start();
+
+            void WriteStatus(string filename)
+            {
+                var percentage = (float)readTotal / totalFiles * 100;
+                Console.ForegroundColor = ConsoleColor.White;
+                Console.Write($"[{readTotal + 1}/{totalFiles} {(int)percentage}%] ");
+                Console.ForegroundColor = ConsoleColor.Gray;
+                Console.WriteLine($"Writing {filename}");
+                readTotal += 1;
+            }
+
+            foreach (var kv in assets)
+            {
+                var path = kv.Key == "pack.mcmeta" ? kv.Key : $"assets/{kv.Key}";
+                WriteStatus(path);
+                using var stream = targetArchive.CreateEntry(path).Open();
+                using var request = await client.GetAsync(dm.GetAssetUri(kv.Value));
+                request.EnsureSuccessStatusCode();
+                await request.Content.CopyToAsync(stream);
+            }
+
+            WriteStatus("pack.png");
+            using (var stream = targetArchive.CreateEntry("pack.png").Open())
+                await clientArchive.GetEntry("pack.png").Open().CopyToAsync(stream);
+
+            foreach (var entry in clientArchive.Entries)
+            {
+                var name = entry.FullName;
+                if (name == "assets/.mcassetsroot" || !name.StartsWith("assets/"))
+                    continue;
+
+                WriteStatus(name);
+                using (var stream = targetArchive.CreateEntry(name).Open())
+                    await clientArchive.GetEntry(name).Open().CopyToAsync(stream);
+            }
+
+            Console.WriteLine($"Done! Took {(int)stopwatch.Elapsed.TotalSeconds} seconds");
+        }
+    }
+
+    class VersionInfo
+    {
+        public string Id;
+        public string Type;
+        public Uri MetaUri;
+        public DateTime Time;
+        public DateTime ReleaseTime;
+    }
+
+    class DownloadHelper
+    {
+        public Uri VersionManifestUri { get; protected set; }
+        public List<VersionInfo> CachedVersions { get; protected set; }
+
+        public DownloadHelper(Uri versionManifestUri = null)
+        {
+            VersionManifestUri = versionManifestUri
+                ?? new Uri("https://launchermeta.mojang.com/mc/game/version_manifest.json");
+            CachedVersions = new List<VersionInfo>();
+        }
+
+        public async Task RetrieveVersionData()
+        {
+            using var client = new HttpClient();
+
+            Console.WriteLine("Retrieving version data... Version manifest URI:");
+            Console.WriteLine(VersionManifestUri);
+
+            using var request = await client.GetAsync(VersionManifestUri);
+            request.EnsureSuccessStatusCode();
+            var contentBody = await request.Content.ReadAsStringAsync();
+
+            CachedVersions.Clear();
+            foreach (var entry in JObject.Parse(contentBody).Value<JArray>("versions"))
+            {
+                CachedVersions.Add(new VersionInfo
+                {
+                    Id = entry.Value<string>("id"),
+                    Type = entry.Value<string>("type"),
+                    MetaUri = new Uri(entry.Value<string>("url")),
+                    Time = DateTime.Parse(entry.Value<string>("time")),
+                    ReleaseTime = DateTime.Parse(entry.Value<string>("releaseTime")),
+                });
+            }
+        }
+
+        public async Task<JObject> GetVersionMeta(string versionId)
+        {
+            using var client = new HttpClient();
+            using var metaRequest = await client.GetAsync(CachedVersions.Find(x => x.Id == versionId).MetaUri);
+            metaRequest.EnsureSuccessStatusCode();
+            return JObject.Parse(await metaRequest.Content.ReadAsStringAsync());
+        }
+
+        public async Task<Dictionary<string, string>> GetAssetIndexFor(JObject meta)
+        {
+            var versionId = meta.Value<string>("id");
+
+            Console.WriteLine($"Retrieving asset index URI for version {versionId}");
+            if (meta.Value<string>("assets") == "pre-1.6" || meta.Value<string>("assets") == "legacy")
+            {
+                Console.WriteLine($"Legacy or pre-1.6 asset index for version {versionId} detected.");
+                Console.WriteLine($"Legacy asset formats aren't supported by McAssetDownloader");
+                return null;
+            }
+
+            var totalSize = meta["assetIndex"].Value<int>("totalSize");
+            Console.WriteLine($"Found asset index - total assets size: {totalSize / 1024} KiB");
+
+            using var client = new HttpClient();
+            using var indexRequest = await client.GetAsync(meta["assetIndex"].Value<string>("url"));
+            indexRequest.EnsureSuccessStatusCode();
+
+            var result = new Dictionary<string, string>();
+            var index = JObject.Parse(await indexRequest.Content.ReadAsStringAsync()).Value<JObject>("objects");
+            foreach (var kv in index)
+                result[kv.Key] = kv.Value.Value<string>("hash");
+
+            return result;
+        }
+
+        public Uri GetAssetUri(string hash) => new Uri($"http://resources.download.minecraft.net/{hash.Substring(0, 2)}/{hash}");
+    }
+}