private static SteamGameData SearchAllInstallations(
string libraryfoldersFile,
uint appId)
{
if (!File.Exists(libraryfoldersFile))
{
return(null);
}
var steamLibraryPaths = GetLibraryPaths(File.ReadAllText(libraryfoldersFile));
foreach (var steamLibraryPath in steamLibraryPaths)
{
var manifestFile = Path.Combine(steamLibraryPath, $"steamapps/appmanifest_{appId}.acf");
if (!File.Exists(manifestFile))
{
continue;
}
// Validate manifest is correct.
SteamGameData game = GameDataFromAppManifest(manifestFile);
if (game.Id != appId)
{
continue;
}
return(game);
}
return(null);
}
public static SteamGameData TryFrom(string path)
{
try {
var game = new SteamGameData();
var xDoc = new XmlDocument();
xDoc.Load(path);
XmlNamespaceManager nsManager = new XmlNamespaceManager(xDoc.NameTable);
nsManager.AddNamespace("d", xDoc.DocumentElement.NamespaceURI);
foreach (XmlElement elem in xDoc.DocumentElement.SelectNodes("//d:PropertyGroup/*", nsManager))
{
switch (elem.Name)
{
case "GameAppId":
game.Id = uint.Parse(elem.LastChild.Value);
break;
case "GameName":
game.Name = elem.LastChild.Value;
break;
case "GameFolderName":
game.InstallFolderName = elem.LastChild.Value;
break;
case "GameDir":
game.InstallDir = elem.LastChild.Value;
break;
}
}
return(game);
} catch (Exception) {
return(null);
}
}
private static async Task EnsureUnityDoorstopAsync(SteamGameData game)
{
var zip = Path.Combine(Utils.GeneratedOutputDir, "unitydoorstop.zip");
if (!File.Exists(zip))
{
using var client = new WebClient();
await client.DownloadFileTaskAsync(UnityDoorstopDownloadUrl, zip);
}
// Extract UnityDoorstop zip over game files.
using var zipReader = ZipFile.OpenRead(zip);
string[] skipIfExists = { "doorstop_config.ini" };
foreach (var entry in zipReader.Entries)
{
if (skipZipExtractContains.Any(
name => entry.FullName.IndexOf(name, StringComparison.InvariantCultureIgnoreCase) >= 0))
{
continue;
}
var targetFile = Path.Combine(game.InstallDir, entry.FullName);
if (File.Exists(targetFile) &&
skipIfExists.Any(f =>
f.Equals(Path.GetFileName(targetFile), StringComparison.InvariantCultureIgnoreCase)))
{
continue;
}
Directory.CreateDirectory(Path.GetDirectoryName(targetFile));
entry.ExtractToFile(targetFile, true);
}
}
static string ValidateUnityGame(SteamGameData game, uint steamAppId)
{
if (game.Id != steamAppId)
{
return($"Steam id in game.props {game.Id} does not match {steamAppId}");
}
if (!File.Exists(Path.Combine(game.InstallDir, "UnityPlayer.dll")))
{
return("Steam game is not a Unity game.");
}
if (!Directory.Exists(game.ManagedDllsDir))
{
throw new Exception("Game is missing Unity managed dlls directory.");
}
return(null);
}
public static async Task Main(string[] args)
{
if (SteamAppId <= 0)
{
throw new Exception("SteamAppId environment variable must be set and be valid");
}
Console.WriteLine($"Building mod for Steam game with id {SteamAppId}");
SteamGameData game = await Task.Factory.StartNew(() => EnsureSteamGame(SteamAppId)).ConfigureAwait(false);
Console.WriteLine($"Found game at {game.InstallDir}");
await Task.WhenAll(
Task.Factory.StartNew(() => EnsureBepInExAsync(game.InstallDir)).Unwrap(),
Task.Factory.StartNew(() => EnsurePublicizedAssemblies(game)))
.ConfigureAwait(false);
}
private static async Task EnsureUnstrippedMonoAssembliesAsync(SteamGameData game)
{
if (Directory.Exists(Path.Combine(game.InstallDir, UnstrippedDllsFolderName)))
{
Console.WriteLine("Unstripped Mono Assemblies are already installed.");
return;
}
// Detect Unity Engine version the game is using.
var unityVersionUsedByGame = new Version(FileVersionInfo
.GetVersionInfo(Path.Combine(game.InstallDir, "UnityPlayer.dll"))
.FileVersion).ToString(3);
// Create Unstripped dlls directory in game directory
var targetDir = Path.Combine(game.InstallDir, UnstrippedDllsFolderName);
Directory.CreateDirectory(targetDir);
// Download unstripped dlls
var dllsZip = Path.Combine(Utils.GeneratedOutputDir, $@"{unityVersionUsedByGame}.zip");
if (!File.Exists(dllsZip))
{
using var client = new WebClient();
await client.DownloadFileTaskAsync(
UnityUnstrippedDllsRepo.Replace("{VERSION}", unityVersionUsedByGame),
dllsZip);
}
// Extract unstripped dlls to unstripped dlls directory in game directory
using var zipReader = ZipFile.OpenRead(dllsZip);
foreach (var entry in zipReader.Entries)
{
var fileName = Path.GetFileName(entry.FullName);
if (string.IsNullOrWhiteSpace(fileName))
{
continue;
}
var targetFile = Path.Combine(targetDir, fileName);
entry.ExtractToFile(targetFile, true);
}
}
private static void EnsurePublicizedAssemblies(SteamGameData game)
{
if (SkipPublicizer)
{
Console.WriteLine("Skipping Assembly Publicizer, execute this manually.");
return;
}
if (Directory.Exists(Path.Combine(Utils.GeneratedOutputDir, "publicized_assemblies")))
{
Console.WriteLine("Assemblies are already publicized.");
return;
}
var dllsToPublicize = Directory.GetFiles(game.ManagedDllsDir, "assembly_*.dll");
foreach (var publicizedDll in Publicizer.Execute(dllsToPublicize,
"_publicized",
Path.Combine(Utils.GeneratedOutputDir, "publicized_assemblies")))
{
Console.WriteLine($"Wrote publicized dll: {publicizedDll}");
}
}
/// <summary>
/// Finds game install directory by iterating through all the steam game libraries configured and finding the appid
/// that matches.
/// </summary>
/// <param name="steamAppId"></param>
/// <returns></returns>
/// <exception cref="Exception">If steam is not installed or game could not be found.</exception>
public static SteamGameData FindGame(uint steamAppId)
{
var steamPath = (string)ReadRegistrySafe("Software\\Valve\\Steam", "SteamPath");
if (string.IsNullOrEmpty(steamPath))
{
try
{
steamPath = (string)ReadRegistrySafe(@"SOFTWARE\Valve\Steam",
"InstallPath",
RegistryHive.LocalMachine);
}
finally
{
if (string.IsNullOrEmpty(steamPath))
{
throw new Exception("Steam could not be found. Check if it is installed.");
}
}
}
var appsPath = Path.Combine(steamPath, "steamapps");
// Test main steamapps.
SteamGameData game = GameDataFromAppManifest(Path.Combine(appsPath, $"appmanifest_{steamAppId}.acf"));
if (game == null)
{
// Test steamapps on other drives (as defined by Steam).
game = SearchAllInstallations(Path.Combine(appsPath, "libraryfolders.vdf"), steamAppId);
if (game == null)
{
throw new Exception($"Steam game with id {steamAppId} is not installed.");
}
}
return(game);
}
private static void EnsureUnityDoorstopConfig(SteamGameData game)
{
// Change UnityDoorstop configuration to make it override game dlls with unstripped dlls.
var unityDoorstopConfig = Path.Combine(game.InstallDir, "doorstop_config.ini");
if (!File.Exists(unityDoorstopConfig))
{
throw new FileNotFoundException("UnityDoorstop config file not found", unityDoorstopConfig);
}
var configContent = File.ReadAllLines(unityDoorstopConfig).ToList();
var requiredValues = new Dictionary <string, string>
{
{ "dllSearchPathOverride", UnstrippedDllsFolderName },
{ "targetAssembly", @"BepInEx\core\BepInEx.Preloader.dll" }
};
for (var i = 0; i < configContent.Count; i++)
{
var match = iniRegex.Match(configContent[i]);
if (!match.Success)
{
continue;
}
if (!requiredValues.TryGetValue(match.Groups[1].Value, out var value))
{
continue;
}
configContent[i] = $"{match.Groups[1].Value}={value}";
requiredValues.Remove(match.Groups[1].Value);
}
foreach (var pair in requiredValues)
{
configContent.Add($"{pair.Key}={pair.Value}");
}
File.WriteAllLines(unityDoorstopConfig, configContent);
}
