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/*
Copyright (C) 2011-2015 de4dot@gmail.com
This file is part of de4dot.
de4dot is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
de4dot is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with de4dot. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Reflection;
using AssemblyData.methodsrewriter;
namespace AssemblyData {
class EmuStringDecrypter : IStringDecrypter {
List<DecryptInfo> decryptInfos = new List<DecryptInfo>();
MethodsRewriter methodsRewriter = new MethodsRewriter();
class DecryptInfo {
public MethodInfo method;
public RewrittenMethod decryptString;
public DecryptInfo(MethodInfo method) {
this.method = method;
}
}
public int DefineStringDecrypter(MethodInfo method) {
decryptInfos.Add(new DecryptInfo(method));
return decryptInfos.Count - 1;
}
public object[] DecryptStrings(int stringDecrypterMethod, object[] args, MethodBase caller) {
var decryptInfo = decryptInfos[stringDecrypterMethod];
if (decryptInfo.decryptString == null)
decryptInfo.decryptString = CreateDecryptString(decryptInfo.method);
methodsRewriter.SetCaller(decryptInfo.decryptString, caller);
var result = new object[args.Length];
for (int i = 0; i < args.Length; i++)
result[i] = decryptInfo.decryptString((object[])args[i]);
return result;
}
RewrittenMethod CreateDecryptString(MethodInfo method) {
methodsRewriter.CreateMethod(method);
return methodsRewriter.CreateDelegate(method);
}
}
}
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