// See: IL2CPP/Metadata.cs
public void GetStrings(Metadata metadata, PluginGetStringsEventInfo data)
{
// NOTE: Metadata derives from BinaryObjectStream
// Everything is available in Metadata except Strings and StringLiterals
// See PostProcessMetadata below
// Set data.Strings to a complete list of indexes and strings
// and set data.IsDataModified
}
// This executes just as Il2CppInspector is about to read all of the .NET identifier strings (eg. type names).
// We can use this to acquire the strings ourselves instead
public void GetStrings(Metadata metadata, PluginGetStringsEventInfo data)
{
// Don't do anything if this isn't for us
if (!IsOurs)
{
return;
}
// Tell the user what is happening in case it takes a while
PluginServices.For(this).StatusUpdate("Decrypting strings");
// miHoYo workloads use encrypted strings, and we need to know the correct string indexes
// to pass to UnityPlayer.dll's GetStringFromIndex function.
// To find them, we scan every definition in the metadata that refers to a string index,
// combine them, put them in order and remove duplicates
var stringIndexes =
metadata.Images.Select(x => x.nameIndex)
.Concat(metadata.Assemblies.Select(x => x.aname.nameIndex))
.Concat(metadata.Assemblies.Select(x => x.aname.cultureIndex))
.Concat(metadata.Assemblies.Select(x => x.aname.hashValueIndex))
.Concat(metadata.Assemblies.Select(x => x.aname.publicKeyIndex))
.Concat(metadata.Events.Select(x => x.nameIndex))
.Concat(metadata.Fields.Select(x => x.nameIndex))
.Concat(metadata.Methods.Select(x => x.nameIndex))
.Concat(metadata.Params.Select(x => x.nameIndex))
.Concat(metadata.Properties.Select(x => x.nameIndex))
.Concat(metadata.Types.Select(x => x.nameIndex))
.Concat(metadata.Types.Select(x => x.namespaceIndex))
.Concat(metadata.GenericParameters.Select(x => x.nameIndex))
.OrderBy(x => x)
.Distinct()
.ToList();
// Create a delegate which internally is a function pointer to the GetStringFromIndex function in the DLL
var pGetStringFromIndex = (GetStringFromIndex)
Marshal.GetDelegateForFunctionPointer(ModuleBase + Offsets[game.Value].GetStringFromIndex, typeof(GetStringFromIndex));
// For each index, call the delegate with the decrypted metadata byte array and index as arguments
foreach (var index in stringIndexes)
{
data.Strings.Add(index, Marshal.PtrToStringAnsi(pGetStringFromIndex(metadataBlob, (uint)index)));
}
// This tells Il2CppInspector we have handled the strings and not to attempt to read them itself
// The strings will be copied from data.Strings to metadata.Strings automatically
data.IsDataModified = true;
}