private Assembly ResolveBootstrappedAssembly(AssemblyLoadContext loadContext, AssemblyName name)
{
BootstrapLog.Info($"Attempting to resolve assembly '{name.FullName}'");
foreach (var assembly in _bootstrapInterface.GetSandboxAssemblies())
{
if (name.Name == assembly.GetName().Name)
{
BootstrapLog.Info($"Resolved with '{assembly.FullName}'");
return(assembly);
}
}
BootstrapLog.Error($"Could not resolve assembly '{name.FullName}'.");
return(null);
}
internal bool Initialize()
{
BootstrapLog.Info("Initializing Sandbox.Bootstrap.MonoCecil.dll");
AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
{
if (_sandboxMonoCecilAssembly == null)
{
return(null);
}
if (args.RequestingAssembly !.FullName == _sandboxMonoCecilAssembly.FullName)
{
var dnlib = FileSystem.Mounted.ReadAllBytes("bootstrap_monocecil/dnlib.dll");
return(Assembly.Load(dnlib.ToArray()));
}
return(null);
};
try
{
var bootstrap = FileSystem.Mounted.ReadAllBytes("bootstrap_monocecil/Sandbox.Bootstrap.MonoCecil.dll");
_sandboxMonoCecilAssembly = Assembly.Load(bootstrap.ToArray());
_monocecil_ModifyAssemblyReference = _sandboxMonoCecilAssembly.GetType("Sandbox.Bootstrap.MonoCecil.AssemblyReferenceEditor")
?.GetMethod("ModifyAssemblyReference", BindingFlags.Public | BindingFlags.Static)
?.CreateDelegate <Func <Stream, string[], AssemblyName[], Stream> >(null);
if (_sandboxMonoCecilAssembly == null || _monocecil_ModifyAssemblyReference == null)
{
BootstrapLog.Error("Failed to bind to Sandbox.Bootstrap.MonoCecil.AssemblyReferenceEditor. Make sure your Sandbox.Bootstrap install is correct.");
return(false);
}
BootstrapLog.Info("Succesfully loaded, ready to modify assembly references.");
return(true);
}
catch (Exception ex)
{
BootstrapLog.Error(ex, "An exception has occured while trying to bind to Sandbox.Bootstrap.MonoCecil.AssemblyReferenceEditor. Make sure your Sandbox.Bootstrap install is correct.");
return(false);
}
}
public Assembly Boot(BootstrappedAddonBuilder bootstrapBuilder)
{
if (bootstrapBuilder == null)
{
throw new ArgumentNullException(nameof(bootstrapBuilder));
}
BootstrapLog.Info($"Loading assembly at '{bootstrapBuilder.AssemblyName}'");
bootstrapBuilder.AssertValid();
// Get the name of the assembly we're trying to load.
var relativePath = $"bootstrapped/{bootstrapBuilder.AssemblyName}/{bootstrapBuilder.AssemblyName}.dll";
var absolutePath = FileSystem.Mounted.GetFullPath(relativePath);
if (absolutePath == null)
{
BootstrapLog.Error($"Could not find assembly '{relativePath}'");
return(null);
}
AssemblyName name;
try
{
name = AssemblyName.GetAssemblyName(absolutePath);
BootstrapLog.Info($"Found assembly '{name.FullName}' at '{relativePath}', attempting to load.");
}
catch (Exception e)
{
BootstrapLog.Error(e, $"Failed to load assembly '{bootstrapBuilder.AssemblyName}'.");
return(null);
}
BootstrapLog.Info($"Valid filesystem: {FileSystem.Mounted.IsValid}");
Assembly asm;
// Now we load the assembly.
try
{
using var dllFile = FileSystem.Mounted.OpenRead(relativePath);
// Before loading, grab all of the dynamic addons currently loaded, and ask Sandbox.Bootstrap.MonoCecil to modify them.
BootstrapLog.Info("[Sandbox.Bootstrap.MonoCecil] Attempting to override references.");
var oldReferences = new List <string>();
var newReferences = new List <AssemblyName>();
foreach (var sboxAssembly in _bootstrapInterface.GetSandboxAssemblies())
{
if (sboxAssembly != null)
{
var asmName = sboxAssembly.GetName();
var split = asmName.Name !.Split('.');
if (split.Length > 1 && split[0] == "Dynamic")
{
oldReferences.Add(split[1]);
newReferences.Add(asmName);
}
}
}
var output = _bootstrapMonoCecil.ModifyAssemblyReference(dllFile, oldReferences.ToArray(), newReferences.ToArray());
asm = _bootstrapInterface.GameAssemblyManager_LoadContext_LoadFromStream(output);
}
catch (Exception e)
{
BootstrapLog.Error(e, $"Failed to load assembly '{name.FullName}' at '{bootstrapBuilder.AssemblyName}'");
return(null);
}
// Woohoo we did it.
BootstrapLog.Info($"Successfully loaded assembly '{asm.FullName}'.");
bootstrapBuilder.OnAssemblyLoaded?.Invoke(asm);
return(asm);
}
/// <summary>
/// Setup all of the required Reflection to interface with Sandbox.
/// </summary>
/// <exception cref="InvalidOperationException"> Thrown if any of the required Reflection calls fail. If this occurs, Sandbox likely got updated. Create an issue on our github repo. </exception>
internal void WrapReflection()
{
if (_wrapped)
{
return;
}
_wrapped = true;
BootstrapLog.Info("Wrapping Sandbox internals using Reflection.");
// Retrieve Sandbox's context interface from the Global class.
_contextInterface = typeof(Global).GetProperty("GameInterface", BindingFlags.Static | BindingFlags.NonPublic)
?.GetValue(null, null);
if (_contextInterface == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not retrieve Global.GameInterface!");
return;
}
// Create a delegate for the ContextInterface.OnNewAssembly method.
var original = Type.GetType($"Sandbox.ServerInterface, {typeof(Global).Assembly.FullName}")
?.GetMethod("OnNewAssembly", BindingFlags.NonPublic | BindingFlags.Instance);
if (original == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.ContextInterface.OnNewAssembly(Assembly, Assembly)!");
return;
}
_onNewAssembly = original.CreateDelegate <Action <Assembly, Assembly> >(_contextInterface);
// Retrieve Sandbox's AssemblyLibrary
_assemblyLibrary_All = Type.GetType($"Sandbox.AssemblyLibrary, {typeof(Global).Assembly.FullName}")
?.GetField("All", BindingFlags.Static | BindingFlags.Public);
if (_assemblyLibrary_All == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.AssemblyLibrary.All!");
return;
}
// Retrieve Sandbox's AssemblyLibrary
_assemblyWrapper_Assembly = Type.GetType($"Sandbox.AssemblyWrapper, {typeof(Global).Assembly.FullName}")
?.GetField("Assembly", BindingFlags.Public | BindingFlags.Instance);
if (_assemblyWrapper_Assembly == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.AssemblyWrapper.Assembly!");
return;
}
_gameAssemblyManager_OnAssembly = Type.GetType($"Sandbox.GameAssemblyManager, {typeof(Global).Assembly.FullName}")
?.GetMethod("OnAssembly", BindingFlags.NonPublic | BindingFlags.Static)
?.CreateDelegate <Action <string, Stream, Stream> >();
if (_gameAssemblyManager_OnAssembly == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.GameAssemblyManager.OnAssembly!");
return;
}
_gameAssemblyManager_LoadContext = Type.GetType($"Sandbox.GameAssemblyManager, {typeof(Global).Assembly.FullName}")
?.GetField("LoadContext", BindingFlags.NonPublic | BindingFlags.Static);
if (_gameAssemblyManager_LoadContext == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.GameAssemblyManager.LoadContext!");
return;
}
_gameAssemblyManager_LoadContext_Resolving = typeof(AssemblyLoadContext).GetEvent("Resolving", BindingFlags.Instance | BindingFlags.Public);
if (_gameAssemblyManager_LoadContext_Resolving == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.GameAssemblyManager.LoadContext.Resolving!");
return;
}
try
{
_gameAssemblyManager_LoadContext_LoadFromStream = typeof(AssemblyLoadContext)
.GetMethod("LoadFromStream", new[] { typeof(Stream) })
?.CreateDelegate <Func <Stream, Assembly> >(_gameAssemblyManager_LoadContext?.GetValue(null));
if (_gameAssemblyManager_LoadContext_LoadFromStream == null)
{
BootstrapLog.Error("Bootstrapper is out of date! Could not bind to Sandbox.GameAssemblyManager.LoadContext.LoadFromStream!");
return;
}
}
catch (Exception e)
{
Log.Info($"{e.Message}\n{e.StackTrace}");
}
}