Mlaumcherb.Client.Avalonia/GameVersion.cs

@@ -36,7 +36,7 @@ public class GameVersion
         foreach (IOPath subdir in Directory.GetDirectories(GetVersionsDir()))
         {
             string name = subdir.LastName().ToString();
-            var d = new GameVersionProps(name);
+            var d = new GameVersionProps(name, null);
             if(!File.Exists(d.LocalDescriptorPath))
                 throw new Exception("Can't find version descriptor file in directory '{subdir}'. Rename it as directory name.");
             propsList.Add(d);
@@ -47,15 +47,14 @@ public class GameVersion
         return Task.FromResult(propsList);
     }
 
-    public static async Task<GameVersion> CreateFromPropsAsync(GameVersionProps props, bool checkHash)
+    public static async Task<GameVersion> CreateFromPropsAsync(GameVersionProps props)
     {
-        //TODO: refresh version descriptor from server
         if (!File.Exists(props.LocalDescriptorPath))
         {
-            if (props.RemoteProps is null)
+            if (props.RemoteDescriptorUrl is null)
                 throw new NullReferenceException("can't download game version descriptor '"
                                                  + props.Name + "', because RemoteDescriptorUrl is null");
-            await NetworkHelper.DownloadFile(props.RemoteProps.url, props.LocalDescriptorPath);
+            await NetworkHelper.DownloadFile(props.RemoteDescriptorUrl, props.LocalDescriptorPath);
         }
 
         return new GameVersion(props);
@@ -105,17 +104,17 @@ public class GameVersion
         [
             new AssetsDownloadTaskFactory(_descriptor),
             new LibrariesDownloadTaskFactory(_descriptor, _libraries),
+            new VersionFileDownloadTaskFactory(_descriptor),
         ];
         if (LauncherApp.Config.download_java)
         {
             taskFactories.Add(new JavaDownloadTaskFactory(_descriptor));
         }
-        if (_descriptor.modpack != null)
+        //TODO: modpack
+        /*if (modpack != null)
         {
-            taskFactories.Add(new ModpackDownloadTaskFactory(_descriptor));
+            taskFactories.Add(new ModpackDownloadTaskFactory(modpack));
-        }
+        }*/
-        // has to be downloaded last because it is used by GameVersionProps to check if version is installed
-        taskFactories.Add(new VersionJarDownloadTaskFactory(_descriptor));
         
         var networkTasks = new List<NetworkTask>();
         for (int i = 0; i < taskFactories.Count; i++)
@@ -177,7 +176,7 @@ public class GameVersion
         Dictionary<string, string> placeholder_values = new() {
             { "resolution_width", "1600" },
             { "resolution_height", "900" },
-            { "xms", LauncherApp.Config.max_memory.ToString() },
+            { "xms", "2048" },
             { "xmx", LauncherApp.Config.max_memory.ToString() },
             { "auth_player_name", LauncherApp.Config.player_name },
             { "auth_access_token", uuid },
@@ -197,8 +196,6 @@ public class GameVersion
             { "game_assets", GetAssetsDir().ToString() },
             { "game_directory", WorkingDirectory.ToString() },
             { "natives_directory", GetNativeLibrariesDir(_descriptor.id).ToString() },
-            { "library_directory", GetLibrariesDir().ToString() },
-            { "classpath_separator", ";"},
             { "path", GetLog4jConfigFilePath().ToString() },
             { "version_name", _descriptor.id },
             { "version_type", _descriptor.type },

Mlaumcherb.Client.Avalonia/зримое/MainWindow.axaml.cs

@@ -134,7 +134,7 @@ public partial class MainWindow : Window
             if (selectedVersion == null) 
                 return;
             
-            var v = await GameVersion.CreateFromPropsAsync(selectedVersion, CheckGameFiles);
+            var v = await GameVersion.CreateFromPropsAsync(selectedVersion);
             await v.UpdateFiles(CheckGameFiles, nt =>
                 {
                     Dispatcher.UIThread.Invoke(() =>

Mlaumcherb.Client.Avalonia/классы/Буржуазия/GameVersionCatalog.cs

@@ -26,7 +26,7 @@ public class GameVersionCatalog
                 _ => p.OtherTypeAllowed
             };
             if(match)
-                _versionPropsList.Add(new GameVersionProps(r));
+                _versionPropsList.Add(new GameVersionProps(r.id, r.url));
         }
         return _versionPropsList;
     }

Mlaumcherb.Client.Avalonia/классы/Буржуазия/GameVersionDescriptor.cs

@@ -17,9 +17,6 @@ public class GameVersionDescriptor
     public JavaVersion javaVersion { get; set; } = new() { component = "jre-legacy", majorVersion = 8 };
     public string? minecraftArguments { get; set; }
     public ArgumentsNew? arguments { get; set; }
-    
-    // my additions
-    public MyModpackRemoteProps? modpack { get; set; }
 }
 
 public class Artifact

Mlaumcherb.Client.Avalonia/классы/Пролетариат/FilesManifest.cs

@@ -1,30 +0,0 @@
-using Mlaumcherb.Client.Avalonia.холопы;
-
-namespace Mlaumcherb.Client.Avalonia.классы;
-
-public class ModpackFilesManifest
-{
-    public class FileProps
-    {
-        [JsonRequired] public string sha1 { get; set; }
-        public bool allow_edit { get; set; } = false;
-    }
-    
-    /// relative_path, hash
-    [JsonRequired] public Dictionary<string, FileProps> files { get; set; } = new();
-
-    public bool CheckFiles(IOPath basedir, bool checkHashes, HashSet<IOPath> unmatchedFilesLocalPaths)
-    {
-        foreach (var p in files)
-        {
-            var localPath = new IOPath(p.Key);
-            var realPath = Path.Concat(basedir, localPath);
-            if (!HashHelper.CheckFileSHA1(realPath, p.Value.sha1, checkHashes && !p.Value.allow_edit))
-            {
-                unmatchedFilesLocalPaths.Add(localPath);
-            }
-        }
-        
-        return unmatchedFilesLocalPaths.Count == 0;
-    }
-}

Mlaumcherb.Client.Avalonia/классы/Пролетариат/GameArguments.cs

@@ -30,7 +30,7 @@ public class GameArguments : ArgumentsWithPlaceholders
                 {
                     foreach (var arg in av.value)
                     {
-                        // if(!_raw_args.Contains(arg))
+                        if(!_raw_args.Contains(arg))
                             _raw_args.Add(arg);
                     }
                 }

Mlaumcherb.Client.Avalonia/классы/Пролетариат/GameVersionProps.cs

@@ -7,7 +7,7 @@ public class GameVersionProps : IComparable<GameVersionProps>, IEquatable<GameVe
 {
     public string Name { get; }
     public IOPath LocalDescriptorPath { get; }
-    public RemoteVersionDescriptorProps? RemoteProps { get; }
+    public string? RemoteDescriptorUrl { get; }
     private bool _isDownloaded;
     public bool IsDownloaded
     {
@@ -23,23 +23,14 @@ public class GameVersionProps : IComparable<GameVersionProps>, IEquatable<GameVe
     }
     public event Action<bool>? StatusChanged;
 
-    private GameVersionProps(string name, RemoteVersionDescriptorProps? remoteProps)
+    public GameVersionProps(string name, string? url)
     {
-        
         Name = name;
-        RemoteProps = remoteProps;
         LocalDescriptorPath = PathHelper.GetVersionDescriptorPath(name);
+        RemoteDescriptorUrl = url;
         IsDownloaded = File.Exists(PathHelper.GetVersionJarFilePath(name));
     }
 
-    public GameVersionProps(string name) 
-        : this(name, null)
-    { }
-    
-    public GameVersionProps(RemoteVersionDescriptorProps remoteProps)
-        : this(remoteProps.id, remoteProps)
-    { }
-
     public void DeleteFiles()
     {
         IsDownloaded = false;

Mlaumcherb.Client.Avalonia/классы/Пролетариат/JavaArguments.cs

@@ -21,6 +21,7 @@ public class JavaArguments : ArgumentsWithPlaceholders
         "-Dminecraft.client.jar=${client_jar}",
         "-Dminecraft.launcher.brand=${launcher_name}",
         "-Dminecraft.launcher.version=${launcher_version}",
+        "-cp", "${classpath}"
     ];
 
     private static readonly string[] _enabled_features = 
@@ -38,17 +39,11 @@ public class JavaArguments : ArgumentsWithPlaceholders
                 {
                     foreach (var arg in av.value)
                     {
-                        // if(!_raw_args.Contains(arg))
+                        if(!_raw_args.Contains(arg))
                             _raw_args.Add(arg);
                     }
                 }
             }
         }
-
-        if (!_raw_args.Contains("-cp"))
-        {
-            _raw_args.Add("-cp");
-            _raw_args.Add("${classpath}");
-        }
     }
 }

Mlaumcherb.Client.Avalonia/классы/Пролетариат/MyModpack.cs

@@ -1,19 +0,0 @@
-namespace Mlaumcherb.Client.Avalonia.классы;
-
-public class MyModpackRemoteProps
-{
-    [JsonRequired] public int format_version { get; set; }
-    [JsonRequired] public Artifact artifact { get; set; } = null!;
-}
-
-public class MyModpackV1
-{
-
-    // 1
-    [JsonRequired] public int format_version { get; set; }
-    [JsonRequired] public string name { get; set; }
-    // zip archive with all files
-    [JsonRequired] public Artifact zip { get; set; } = null!;
-    // ModpackFilesManifest
-    [JsonRequired] public Artifact manifest { get; set; } = null!;
-}

Mlaumcherb.Client.Avalonia/сеть/NetworkHelper.cs

@@ -1,5 +1,6 @@
 using System.Net.Http;
-using Mlaumcherb.Client.Avalonia.холопы;
+using Mlaumcherb.Client.Avalonia.зримое;
+using Mlaumcherb.Client.Avalonia.классы;
 
 namespace Mlaumcherb.Client.Avalonia.сеть;
 
@@ -40,25 +41,4 @@ public static class NetworkHelper
             ?? throw new Exception($"can't deserialize {typeof(T).Name}");
         return result;
     }
-    
-    
-    public static async Task<string> ReadOrDownload(IOPath filePath, string url, 
-        string? sha1, bool checkHashes)
-    {
-        if (HashHelper.CheckFileSHA1(filePath, sha1, checkHashes)) 
-            return File.ReadAllText(filePath);
-        
-        string txt = await NetworkHelper.GetString(url);
-        File.WriteAllText(filePath, txt);
-        return txt;
-    }
-
-    public static async Task<T> ReadOrDownloadAndDeserialize<T>(IOPath filePath, string url,
-        string? sha1, bool checkHashes)
-    {
-        string text = await ReadOrDownload(filePath, url, sha1, checkHashes);
-        var result = JsonConvert.DeserializeObject<T>(text)
-                     ?? throw new Exception($"can't deserialize {typeof(T).Name}");
-        return result;
-    }
 }

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/AssetsDownloadTaskFactory.cs

@@ -1,5 +1,7 @@
 using System.Net;
 using System.Net.Http;
+using System.Security.Cryptography;
+using DTLib.Extensions;
 using Mlaumcherb.Client.Avalonia.зримое;
 using Mlaumcherb.Client.Avalonia.классы;
 using Mlaumcherb.Client.Avalonia.холопы;
@@ -11,12 +13,14 @@ public class AssetsDownloadTaskFactory : INetworkTaskFactory
 {
     private const string ASSET_SERVER_URL = "https://resources.download.minecraft.net/";
     private GameVersionDescriptor _descriptor;
+    private SHA1 _hasher;
     private IOPath _indexFilePath;
     List<AssetDownloadProperties> _assetsToDownload = new();
 
     public AssetsDownloadTaskFactory(GameVersionDescriptor descriptor)
     {
         _descriptor = descriptor;
+        _hasher = SHA1.Create();
         _indexFilePath = PathHelper.GetAssetIndexFilePath(_descriptor.assetIndex.id);
     }
     
@@ -33,11 +37,16 @@ public class AssetsDownloadTaskFactory : INetworkTaskFactory
     }
     private async Task<bool> CheckFilesAsync(bool checkHashes)
     {
-        var assetIndex = await ReadOrDownloadAndDeserialize<AssetIndex>(
+        if(!File.Exists(_indexFilePath))
-            _indexFilePath,
+        {
-            _descriptor.assetIndex.url, 
+            LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading asset index to '{_indexFilePath}'");
-            _descriptor.assetIndex.sha1,
+            await DownloadFile(_descriptor.assetIndex.url, _indexFilePath);
-            checkHashes);
+            LauncherApp.Logger.LogInfo(nameof(NetworkHelper), "finished downloading asset index");
+        }
+
+        string indexFileText = File.ReadAllText(_indexFilePath);
+        var assetIndex = JsonConvert.DeserializeObject<AssetIndex>(indexFileText) 
+                     ?? throw new Exception($"can't deserialize asset index file '{_indexFilePath}'");
         
         _assetsToDownload.Clear();
         // removing duplicates for Dictionary (idk how can it be possible, but Newtonsoft.Json creates them)
@@ -47,10 +56,17 @@ public class AssetsDownloadTaskFactory : INetworkTaskFactory
             if (assetHashes.Add(pair.Value.hash))
             {
                 var a = new AssetDownloadProperties(pair.Key, pair.Value);
-                if (!HashHelper.CheckFileSHA1(a.filePath, a.hash, checkHashes))
+                if (!File.Exists(a.filePath))
                 {
                     _assetsToDownload.Add(a);
                 }
+                else if(checkHashes)
+                {
+                    await using var fs = File.OpenRead(a.filePath);
+                    string hash = _hasher.ComputeHash(fs).HashToString();
+                    if (hash != a.hash)
+                        _assetsToDownload.Add(a);
+                }
             }
         }
         

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/JavaDownloadTaskFactory.cs

@@ -1,4 +1,6 @@
-using Mlaumcherb.Client.Avalonia.зримое;
+using System.Security.Cryptography;
+using DTLib.Extensions;
+using Mlaumcherb.Client.Avalonia.зримое;
 using Mlaumcherb.Client.Avalonia.классы;
 using Mlaumcherb.Client.Avalonia.холопы;
 using static Mlaumcherb.Client.Avalonia.сеть.NetworkHelper;
@@ -11,6 +13,7 @@ public class JavaDownloadTaskFactory : INetworkTaskFactory
         "https://launchermeta.mojang.com/v1/products/java-runtime/2ec0cc96c44e5a76b9c8b7c39df7210883d12871/all.json";
     private GameVersionDescriptor _descriptor;
     private IOPath _javaVersionDir;
+    private SHA1 _hasher;
     private JavaDistributiveManifest? _distributiveManifest;
     private List<(IOPath path, JavaDistributiveElementProps props)> _filesToDownload = new();
     
@@ -18,6 +21,7 @@ public class JavaDownloadTaskFactory : INetworkTaskFactory
     {
         _descriptor = descriptor;
         _javaVersionDir = PathHelper.GetJavaRuntimeDir(_descriptor.javaVersion.component);
+        _hasher = SHA1.Create();
     }
 
     public async Task<NetworkTask?> CreateAsync(bool checkHashes)
@@ -48,10 +52,18 @@ public class JavaDownloadTaskFactory : INetworkTaskFactory
             {
                 var artifact = pair.Value.downloads;
                 IOPath file_path = Path.Concat(_javaVersionDir, pair.Key);
-                if (!HashHelper.CheckFileSHA1(file_path, artifact.raw.sha1, checkHashes))
+                if (!File.Exists(file_path))
                 {
                     _filesToDownload.Add((file_path, pair.Value));
                 }
+                else if(checkHashes)
+                {
+                    using var fs = File.OpenRead(file_path);
+                    if (_hasher.ComputeHash(fs).HashToString() != artifact.raw.sha1)
+                    {
+                        _filesToDownload.Add((file_path, pair.Value));
+                    }
+                }
             }
         }
 

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/LibrariesDownloadTaskFactory.cs

@@ -1,4 +1,6 @@
 using System.IO.Compression;
+using System.Security.Cryptography;
+using DTLib.Extensions;
 using Mlaumcherb.Client.Avalonia.зримое;
 using Mlaumcherb.Client.Avalonia.классы;
 using Mlaumcherb.Client.Avalonia.холопы;
@@ -10,6 +12,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
 {
     private GameVersionDescriptor _descriptor;
     private Libraries _libraries;
+    private SHA1 _hasher;
     private List<Libraries.JarLib> _libsToDownload = new();
     private IOPath _nativesDir;
 
@@ -17,6 +20,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
     {
         _descriptor = descriptor;
         _libraries = libraries;
+        _hasher = SHA1.Create();
         _nativesDir = PathHelper.GetNativeLibrariesDir(descriptor.id);
     }
     
@@ -39,15 +43,21 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
         
         foreach (var l in _libraries.Libs)
         {
-            if (!HashHelper.CheckFileSHA1(l.jarFilePath, l.artifact.sha1, checkHashes))
+            if (!File.Exists(l.jarFilePath))
             {
                 _libsToDownload.Add(l);
             }
-            //TODO: replace with actual native assets check
             else if (!nativeDirExists && l is Libraries.NativeLib)
             {
                 _libsToDownload.Add(l);
             }
+            else if (checkHashes)
+            {
+                using var fs = File.OpenRead(l.jarFilePath);
+                string hash = _hasher.ComputeHash(fs).HashToString();
+                if(hash != l.artifact.sha1)
+                    _libsToDownload.Add(l);
+            }
         }
 
         return _libsToDownload.Count == 0;
@@ -78,8 +88,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
             await DownloadFile(l.artifact.url, l.jarFilePath, _ct, pr.AddBytesCount);
             if (l is Libraries.NativeLib n)
             {
-                await using var zipf = File.OpenRead(n.jarFilePath);
+                var zipf = File.OpenRead(n.jarFilePath);
-                //TODO: replace following code with manual extraction
                 ZipFile.ExtractToDirectory(zipf, _nativesDir.ToString(), true);
                 if (n.extractionOptions?.exclude != null)
                 {

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/ModpackDownloadTaskFactory.cs

@@ -1,102 +0,0 @@
-using System.IO.Compression;
-using Mlaumcherb.Client.Avalonia.зримое;
-using Mlaumcherb.Client.Avalonia.классы;
-using Mlaumcherb.Client.Avalonia.холопы;
-
-namespace Mlaumcherb.Client.Avalonia.сеть.TaskFactories;
-
-public class ModpackDownloadTaskFactory : INetworkTaskFactory
-{
-    INetworkTaskFactory _implementationVersion;
-    
-    public ModpackDownloadTaskFactory(GameVersionDescriptor descriptor)
-    {
-        if(descriptor.modpack is null)
-            throw new ArgumentNullException(nameof(descriptor.modpack));
-        _implementationVersion = descriptor.modpack.format_version switch
-        {
-            1 => new MyModpackV1DownloadTaskFactory(descriptor),
-            _ => throw new Exception($"Unknown Modpack format_version: {descriptor.modpack.format_version}")
-        };
-    }
-
-    public Task<NetworkTask?> CreateAsync(bool checkHashes)
-    {
-        return _implementationVersion.CreateAsync(checkHashes);
-    }
-}
-
-public class MyModpackV1DownloadTaskFactory : INetworkTaskFactory
-{
-    private IOPath _modpackManifesPath;
-    private readonly GameVersionDescriptor _descriptor;
-    private IOPath _modpackDescriptorPath;
-    private IOPath _versionDir;
-    private MyModpackV1? _modpack;
-    private ModpackFilesManifest? _modpackManifest;
-    private HashSet<IOPath> _filesToDosnload = new();
-
-    public MyModpackV1DownloadTaskFactory(GameVersionDescriptor descriptor)
-    {
-        _descriptor = descriptor;
-        _modpackDescriptorPath = PathHelper.GetModpackDescriptorPath(_descriptor.id);
-        _modpackManifesPath = PathHelper.GetModpackManifestPath(_descriptor.id);
-        _versionDir = PathHelper.GetVersionDir(_descriptor.id);
-    }
-    
-    public async Task<NetworkTask?> CreateAsync(bool checkHashes)
-    {
-        if(_descriptor.modpack is null)
-            throw new ArgumentNullException(nameof(_descriptor.modpack));
-
-
-        _modpack = await NetworkHelper.ReadOrDownloadAndDeserialize<MyModpackV1>(
-            _modpackDescriptorPath,
-            _descriptor.modpack.artifact.url, 
-            _descriptor.modpack.artifact.sha1,
-            checkHashes);
-        if (_modpack.format_version != _descriptor.modpack.format_version)
-            throw new Exception($"Modpack.format_version mismatches descriptor.modpack.version: " +
-                                $"{_modpack.format_version} != {_descriptor.modpack.format_version}");
-
-        _modpackManifest = await NetworkHelper.ReadOrDownloadAndDeserialize<ModpackFilesManifest>(
-            _modpackManifesPath,
-            _modpack.manifest.url, 
-            _modpack.manifest.sha1, 
-            checkHashes);
-
-        if(!_modpackManifest.CheckFiles(_versionDir, checkHashes, _filesToDosnload))
-            return new NetworkTask(
-                $"modpack '{_descriptor.assetIndex.id}'",
-                _modpack.zip.size,
-                Download
-            );
-
-        return null;
-    }
-
-    private async Task Download(NetworkProgressReporter pr, CancellationToken ct)
-    {
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading modpack '{_modpack!.name}'");
-        if(string.IsNullOrEmpty(_modpack.zip.url))
-            throw new Exception($"modpack '{_modpack.name}' doesn't have a url to download");
-
-        var _archivePath = Path.Concat("downloads/modpacks", _modpack.name + ".zip");
-        await NetworkHelper.DownloadFile(_modpack.zip.url, _archivePath, ct, pr.AddBytesCount);
-        
-        await using var zipf = File.OpenRead(_archivePath);
-        using var archive = new ZipArchive(zipf);
-        foreach (var entry in archive.Entries)
-        {
-            IOPath localPath = new(entry.FullName);
-            if(_filesToDosnload.Contains(localPath))
-            {
-                var real_path = Path.Concat(_versionDir, localPath);
-                Directory.Create(real_path.ParentDir());
-                entry.ExtractToFile(real_path.ToString(), true);
-            }
-        }
-        
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"finished downloading modpack '{_modpack.name}'");
-    }
-}

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/VersionFileDownloadTaskFactory.cs

@@ -1,19 +1,23 @@
-using Mlaumcherb.Client.Avalonia.зримое;
+using System.Security.Cryptography;
+using DTLib.Extensions;
+using Mlaumcherb.Client.Avalonia.зримое;
 using Mlaumcherb.Client.Avalonia.классы;
 using Mlaumcherb.Client.Avalonia.холопы;
 using static Mlaumcherb.Client.Avalonia.сеть.NetworkHelper;
 
 namespace Mlaumcherb.Client.Avalonia.сеть.TaskFactories;
 
-public class VersionJarDownloadTaskFactory : INetworkTaskFactory
+public class VersionFileDownloadTaskFactory : INetworkTaskFactory
 {
     private GameVersionDescriptor _descriptor;
     private IOPath _filePath;
+    private SHA1 _hasher;
     
-    public VersionJarDownloadTaskFactory(GameVersionDescriptor descriptor)
+    public VersionFileDownloadTaskFactory(GameVersionDescriptor descriptor)
     {
         _descriptor = descriptor;
         _filePath = PathHelper.GetVersionJarFilePath(_descriptor.id);
+        _hasher = SHA1.Create();
     }
 
     public Task<NetworkTask?> CreateAsync(bool checkHashes)
@@ -21,7 +25,7 @@ public class VersionJarDownloadTaskFactory : INetworkTaskFactory
         NetworkTask? networkTask = null;
         if (!CheckFiles(checkHashes))
             networkTask = new NetworkTask(
-                    $"game version jar '{_descriptor.id}'",
+                    $"version file '{_descriptor.id}'",
                     GetTotalSize(),
                     Download
                 );
@@ -30,7 +34,18 @@ public class VersionJarDownloadTaskFactory : INetworkTaskFactory
 
     private bool CheckFiles(bool checkHashes)
     {
-        return HashHelper.CheckFileSHA1(_filePath, _descriptor.downloads?.client.sha1, checkHashes);
+        if (!File.Exists(_filePath))
+            return false;
+        
+        if (!checkHashes)
+            return true;
+
+        if (_descriptor.downloads is null)
+            return true;
+        
+        using var fs = File.OpenRead(_filePath);
+        string hash = _hasher.ComputeHash(fs).HashToString();
+        return hash == _descriptor.downloads.client.sha1;
     }
 
     private long GetTotalSize()
@@ -43,10 +58,10 @@ public class VersionJarDownloadTaskFactory : INetworkTaskFactory
     private async Task Download(NetworkProgressReporter pr, CancellationToken ct)
     {
         if (_descriptor.downloads is null)
-            throw new Exception($"can't download game version jar '{_descriptor.id}' because it has no download url");
+            throw new Exception($"can't download version file '{_descriptor.id}' because it has no download url");
         
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading game version jar '{_descriptor.id}'");
+        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading version file '{_descriptor.id}'");
         await DownloadFile(_descriptor.downloads.client.url, _filePath, ct, pr.AddBytesCount);
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"finished downloading game version jar '{_descriptor.id}'");
+        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"finished downloading version file '{_descriptor.id}'");
     }
 }

Mlaumcherb.Client.Avalonia/холопы/HashHelper.cs

@@ -1,32 +0,0 @@
-using System.Security.Cryptography;
-using DTLib.Extensions;
-
-namespace Mlaumcherb.Client.Avalonia.холопы;
-
-public static class HashHelper
-{
-    private static SHA1 _hasher;
-
-    static HashHelper()
-    {
-        _hasher = SHA1.Create();
-    }
-
-    public static string HashFileSHA1(IOPath f)
-    {
-        using var fs = File.OpenRead(f);
-        byte[] hash = _hasher.ComputeHash(fs);
-        return hash.HashToString();
-    }
-
-    public static bool CheckFileSHA1(IOPath f, string? sha1, bool checkHash)
-    {
-        if (!File.Exists(f))
-            return false;
-        
-        if(checkHash)
-            return sha1 is not null && HashFileSHA1(f) == sha1;
-
-        return true;
-    }
-}

Mlaumcherb.Client.Avalonia/холопы/PathHelper.cs

@@ -11,7 +11,7 @@ public static class PathHelper
         Path.Concat(GetRootFullPath(), "assets");
     
     public static IOPath GetAssetIndexFilePath(string id) => 
-        Path.Concat(GetAssetsDir(), $"indexes/{id}.json"); // this path is hardcoded in the game
+        Path.Concat(GetAssetsDir(), $"assets/indexes/{id}.json");
     
     public static IOPath GetVersionDescriptorPath(string id) => 
         Path.Concat(GetVersionDir(id), id + ".json");
@@ -54,10 +54,4 @@ public static class PathHelper
     
     public static IOPath GetLog4jConfigFilePath() =>
         Path.Concat(GetAssetsDir(), GetLog4jConfigFileName());
-
-    public static IOPath GetModpackDescriptorPath(string game_version) => 
-        Path.Concat(GetVersionDir(game_version), "timerix_modpack.json");
-    
-    public static IOPath GetModpackManifestPath(string game_version) => 
-        Path.Concat(GetVersionDir(game_version), "timerix_modpack_files.json");
 }