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92 lines
3.4 KiB
92 lines
3.4 KiB
using IPA.Utilities;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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#if NET3
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using Net3_Proxy;
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using Path = Net3_Proxy.Path;
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using File = Net3_Proxy.File;
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using Directory = Net3_Proxy.Directory;
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#endif
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namespace IPA.Injector
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{
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internal static class GameVersionEarly
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{
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internal static string ResolveDataPath(string installDir) =>
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Directory.EnumerateDirectories(installDir, "*_Data").First();
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internal static string GlobalGameManagers(string installDir) =>
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Path.Combine(ResolveDataPath(installDir), "globalgamemanagers");
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internal static string GetGameVersion()
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{
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var mgr = GlobalGameManagers(UnityGame.InstallPath);
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using (var stream = File.OpenRead(mgr))
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using (var reader = new BinaryReader(stream, Encoding.UTF8))
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{
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const string key = "public.app-category.games";
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int pos = 0;
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while (stream.Position < stream.Length && pos < key.Length)
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{
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if (reader.ReadByte() == key[pos]) pos++;
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else pos = 0;
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}
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if (stream.Position == stream.Length) // we went through the entire stream without finding the key
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throw new KeyNotFoundException("Could not find key '" + key + "' in " + mgr);
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long startPos = 0;
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long length = 0;
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while (stream.Position < stream.Length)
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{
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char current = reader.ReadChar();
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if (startPos == 0 && current >= '0' && current <= '9')
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startPos = stream.Position - 1;
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else if (startPos > 0 && IllegalCharacters.Contains(current))
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{
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length = stream.Position - startPos - 1;
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break;
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}
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}
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if (startPos <= 0 || length <= 0)
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throw new KeyNotFoundException("Could not parse version from " + mgr);
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stream.Seek(startPos, SeekOrigin.Begin);
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var strbytes = reader.ReadBytes((int)length);
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return Encoding.UTF8.GetString(strbytes);
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}
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}
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internal static SemVer.Version SafeParseVersion() => new SemVer.Version(GetGameVersion(), true);
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private static void _Load()
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{
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UnityGame.SetEarlyGameVersion(SafeParseVersion());
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UnityGame.CheckGameVersionBoundary();
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}
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internal static void Load()
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{
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// This exists for the same reason the wierdness in Injector.Main does
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_ = Type.GetType("SemVer.Version, SemVer", false);
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_Load();
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}
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internal static readonly char[] IllegalCharacters = new char[]
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{
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'<', '>', ':', '/', '\\', '|', '?', '*', '"',
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'\u0000', '\u0001', '\u0002', '\u0003', '\u0004', '\u0005', '\u0006', '\u0007',
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'\u0008', '\u0009', '\u000a', '\u000b', '\u000c', '\u000d', '\u000e', '\u000d',
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'\u000f', '\u0010', '\u0011', '\u0012', '\u0013', '\u0014', '\u0015', '\u0016',
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'\u0017', '\u0018', '\u0019', '\u001a', '\u001b', '\u001c', '\u001d', '\u001f',
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};
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}
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}
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