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using HarmonyLib;
using System.Reflection;
namespace IPA.Loader
{
internal static class HarmonyProtectorProxy
{
public static void ProtectNull() => HarmonyProtector.Protect();
}
internal static class HarmonyProtector
{
private static Harmony instance;
private static Assembly selfAssem;
private static Assembly harmonyAssem;
public static void Protect(Harmony inst = null)
{
selfAssem = Assembly.GetExecutingAssembly();
harmonyAssem = typeof(Harmony).Assembly;
if (inst == null)
{
if (instance == null)
instance = new Harmony("BSIPA Safeguard");
inst = instance;
}
var target = typeof(PatchProcessor).GetMethod("Patch");
var patch = typeof(HarmonyProtector).GetMethod(nameof(PatchProcessor_Patch_Prefix), BindingFlags.NonPublic | BindingFlags.Static);
inst.Patch(target, new HarmonyMethod(patch));
}
private static bool PatchProcessor_Patch_Prefix(MethodBase ___original, out MethodInfo __result)
{
var asm = ___original.DeclaringType.Assembly;
__result = ___original as MethodInfo;
return !(asm.Equals(selfAssem) || asm.Equals(harmonyAssem));
}
}
}