using IPA.Utilities; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; #if NET3 using Net3_Proxy; using Path = Net3_Proxy.Path; using File = Net3_Proxy.File; using Directory = Net3_Proxy.Directory; #endif namespace IPA.Injector { internal static class GameVersionEarly { internal static string ResolveDataPath(string installDir) => Directory.EnumerateDirectories(installDir, "*_Data").First(); internal static string GlobalGameManagers(string installDir) => Path.Combine(ResolveDataPath(installDir), "globalgamemanagers"); internal static string GetGameVersion() { var mgr = GlobalGameManagers(UnityGame.InstallPath); using (var stream = File.OpenRead(mgr)) using (var reader = new BinaryReader(stream, Encoding.UTF8)) { const string key = "public.app-category.games"; int pos = 0; while (stream.Position < stream.Length && pos < key.Length) { if (reader.ReadByte() == key[pos]) pos++; else pos = 0; } if (stream.Position == stream.Length) // we went through the entire stream without finding the key throw new KeyNotFoundException("Could not find key '" + key + "' in " + mgr); while (stream.Position < stream.Length) { var current = (char)reader.ReadByte(); if (char.IsDigit(current)) break; } var rewind = -sizeof(int) - sizeof(byte); stream.Seek(rewind, SeekOrigin.Current); // rewind to the string length var strlen = reader.ReadInt32(); var strbytes = reader.ReadBytes(strlen); return Encoding.UTF8.GetString(strbytes); } } internal static AlmostVersion SafeParseVersion() => new AlmostVersion(GetGameVersion()); private static void _Load() { UnityGame.SetEarlyGameVersion(SafeParseVersion()); UnityGame.CheckGameVersionBoundary(); } internal static void Load() { // This exists for the same reason the wierdness in Injector.Main does _ = Type.GetType("SemVer.Version, SemVer", false); _Load(); } internal static readonly char[] IllegalCharacters = new char[] { '<', '>', ':', '/', '\\', '|', '?', '*', '"', '\u0000', '\u0001', '\u0002', '\u0003', '\u0004', '\u0005', '\u0006', '\u0007', '\u0008', '\u0009', '\u000a', '\u000b', '\u000c', '\u000d', '\u000e', '\u000d', '\u000f', '\u0010', '\u0011', '\u0012', '\u0013', '\u0014', '\u0015', '\u0016', '\u0017', '\u0018', '\u0019', '\u001a', '\u001b', '\u001c', '\u001d', '\u001f', }; } }