95 lines
3.2 KiB
C#
95 lines
3.2 KiB
C#
/*
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Copyright (C) 2011-2012 de4dot@gmail.com
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This file is part of de4dot.
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de4dot is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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de4dot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with de4dot. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.IO;
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using Mono.Cecil;
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using Mono.Cecil.Cil;
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namespace de4dot.code.deobfuscators.Babel_NET {
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class MethodBodyReader : MethodBodyReaderBase {
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ImageReader imageReader;
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public int Flags2 { get; set; }
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public short MaxStack { get; set; }
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public MethodBodyReader(ImageReader imageReader, BinaryReader reader)
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: base(reader) {
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this.imageReader = imageReader;
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}
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public void read(ParameterDefinition[] parameters) {
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this.parameters = parameters;
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Flags2 = reader.ReadInt16();
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MaxStack = reader.ReadInt16();
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setLocals(imageReader.readTypeReferences());
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readInstructions(imageReader.readVariableLengthInt32());
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readExceptionHandlers(imageReader.readVariableLengthInt32());
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}
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protected override FieldReference readInlineField(Instruction instr) {
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return imageReader.readFieldReference();
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}
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protected override MethodReference readInlineMethod(Instruction instr) {
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return imageReader.readMethodReference();
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}
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protected override CallSite readInlineSig(Instruction instr) {
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return imageReader.readCallSite();
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}
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protected override string readInlineString(Instruction instr) {
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return imageReader.readString();
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}
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protected override MemberReference readInlineTok(Instruction instr) {
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switch (reader.ReadByte()) {
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case 0: return imageReader.readTypeReference();
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case 1: return imageReader.readFieldReference();
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case 2: return imageReader.readMethodReference();
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default: throw new ApplicationException("Unknown token type");
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}
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}
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protected override TypeReference readInlineType(Instruction instr) {
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return imageReader.readTypeReference();
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}
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protected override ExceptionHandler readExceptionHandler() {
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var ehType = (ExceptionHandlerType)reader.ReadByte();
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int tryOffset = imageReader.readVariableLengthInt32();
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int tryLength = imageReader.readVariableLengthInt32();
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int handlerOffset = imageReader.readVariableLengthInt32();
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int handlerLength = imageReader.readVariableLengthInt32();
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var catchType = imageReader.readTypeReference();
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int filterOffset = imageReader.readVariableLengthInt32();
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var eh = new ExceptionHandler(ehType);
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eh.TryStart = getInstruction(tryOffset);
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eh.TryEnd = getInstructionOrNull(tryOffset + tryLength);
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if (ehType == ExceptionHandlerType.Filter)
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eh.FilterStart = getInstruction(filterOffset);
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eh.HandlerStart = getInstruction(handlerOffset);
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eh.HandlerEnd = getInstructionOrNull(handlerOffset + handlerLength);
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eh.CatchType = catchType;
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return eh;
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}
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}
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}
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