void CreateScopes (MethodBody body, ScopeCollection scopes, SymbolToken localVarToken)
{
foreach (Scope s in scopes) {
int startOffset = s.Start.Offset;
int endOffset = s.End == body.Instructions.Outside ?
body.Instructions[body.Instructions.Count - 1].Offset + 1 :
s.End.Offset;
m_writer.OpenScope (startOffset);
m_writer.UsingNamespace (body.Method.DeclaringType.Namespace);
m_writer.OpenNamespace (body.Method.DeclaringType.Namespace);
int start = body.Instructions.IndexOf (s.Start);
int end = s.End == body.Instructions.Outside ?
body.Instructions.Count - 1 :
body.Instructions.IndexOf (s.End);
ArrayList instructions = CollectSequencePoints (body, start, end);
DefineSequencePoints (instructions);
CreateLocalVariable (s, startOffset, endOffset, localVarToken);
CreateScopes (body, s.Scopes, localVarToken);
m_writer.CloseNamespace ();
m_writer.CloseScope (endOffset);
}
}
public override void VisitMethodBody (MethodBody body)
{
MethodDefinition meth = body.Method;
MethodBody methBody = body;
BinaryReader br = m_reflectReader.Module.ImageReader.MetadataReader.GetDataReader (meth.RVA);
// lets read the method
int flags = br.ReadByte ();
switch (flags & 0x3) {
case (int) MethodHeader.TinyFormat :
methBody.CodeSize = flags >> 2;
methBody.MaxStack = 8;
ReadCilBody (methBody, br);
break;
case (int) MethodHeader.FatFormat :
br.BaseStream.Position--;
int fatflags = br.ReadUInt16 ();
//int headersize = (fatflags >> 12) & 0xf;
methBody.MaxStack = br.ReadUInt16 ();
methBody.CodeSize = br.ReadInt32 ();
methBody.LocalVarToken = br.ReadInt32 ();
body.InitLocals = (fatflags & (int) MethodHeader.InitLocals) != 0;
if (methBody.LocalVarToken != 0)
VisitVariableDefinitionCollection (methBody.Variables);
ReadCilBody (methBody, br);
if ((fatflags & (int) MethodHeader.MoreSects) != 0)
ReadSection (methBody, br);
break;
}
}
private void WeaveDependencyProperty(MethodBody staticCtorBody, FieldReference field, PropertyDefinition property)
{
var assembly = property.DeclaringType.Module.Assembly;
var propertyType = assembly.ImportType(Type.GetType(property.PropertyType.FullName));
var getTypeFromHandle = assembly.ImportMethod(typeof(Type).GetMethod("GetTypeFromHandle"));
var register = assembly.ImportMethod(typeof(DependencyProperty).GetMethod("Register", new[] { typeof(string), typeof(Type), typeof(Type) }));
// ignore previously weaved DPs
if (staticCtorBody.Instructions.Any(i => i.Operand != null && i.Operand.ToString() == field.ToString()))
{
return;
}
var ret = staticCtorBody.Instructions.Last();
if (ret.OpCode != OpCodes.Ret)
throw new InvalidOperationException("The last instruction should be OpCode.Ret");
HasChanges = true;
var proc = staticCtorBody.GetILProcessor();
proc.InsertBefore(ret, proc.Create(OpCodes.Ldstr, property.Name));
proc.InsertBefore(ret, proc.Create(OpCodes.Ldtoken, propertyType));
proc.InsertBefore(ret, proc.Create(OpCodes.Call, getTypeFromHandle));
proc.InsertBefore(ret, proc.Create(OpCodes.Ldtoken, property.DeclaringType));
proc.InsertBefore(ret, proc.Create(OpCodes.Call, getTypeFromHandle));
proc.InsertBefore(ret, proc.Create(OpCodes.Call, register));
proc.InsertBefore(ret, proc.Create(OpCodes.Stsfld, field));
}
private static void SwapMethods(MethodBody body, IEnumerable<Instruction> oldInstructions, IDictionary<MethodReference, MethodReference> methodMap,
TypeDefinition targetDependency)
{
var IL = body.CilWorker;
foreach (var instruction in oldInstructions)
{
var opCode = instruction.OpCode;
if (opCode != OpCodes.Call && opCode != OpCodes.Callvirt)
{
IL.Append(instruction);
continue;
}
var currentMethod = instruction.Operand as MethodReference;
if (currentMethod == null || !methodMap.ContainsKey(currentMethod))
{
IL.Append(instruction);
continue;
}
if (currentMethod.DeclaringType != targetDependency)
{
IL.Append(instruction);
continue;
}
var interfaceMethod = methodMap[currentMethod];
instruction.Operand = interfaceMethod;
instruction.OpCode = OpCodes.Callvirt;
IL.Append(instruction);
}
}
public void Write(MethodBody body, /*Telerik Authorship*/ MetadataToken methodToken, /*Telerik Authorship*/ MetadataToken localVarToken)
{
var method = new SourceMethod (body.Method);
var instructions = GetInstructions (body);
int count = instructions.Count;
if (count == 0)
return;
var offsets = new int [count];
var start_rows = new int [count];
var start_cols = new int [count];
SourceFile file;
Populate (instructions, offsets, start_rows, start_cols, out file);
var builder = writer.OpenMethod (file.CompilationUnit, 0, method);
for (int i = 0; i < count; i++)
builder.MarkSequencePoint (
offsets [i],
file.CompilationUnit.SourceFile,
start_rows [i],
start_cols [i],
false);
if (body.HasVariables)
AddVariables (body.Variables);
writer.CloseMethod ();
}
public void Write(MethodBody body)
{
var method_token = body.Method.MetadataToken;
var sym_token = new SymbolToken (method_token.ToInt32 ());
var instructions = CollectInstructions (body);
if (instructions.Count == 0 && !body.HasVariables)
return;
writer.OpenMethod (sym_token);
DefineSequencePoints (instructions);
if (body.Scope != null)
WriteScope (body, body.Scope);
else
if (body.HasVariables)
{
var start_offset = 0;
var end_offset = body.CodeSize;
writer.OpenScope (start_offset);
DefineVariables (body, body.Variables, start_offset, end_offset);
writer.CloseScope (end_offset);
}
if (body.IteratorType != null)
DefineIteratorType (sym_token, body.IteratorType.Name);
if (body.iterator_scopes != null)
DefineIteratorScopes (sym_token, body.IteratorScopes, body.CodeSize);
writer.CloseMethod ();
}
public void Write (MethodBody body)
{
CreateDocuments (body);
m_writer.OpenMethod (new SymbolToken ((int) body.Method.MetadataToken.ToUInt ()));
CreateScopes (body, body.Scopes, new SymbolToken (body.LocalVarToken));
m_writer.CloseMethod ();
}
public void VisitMethodBody(MethodBody body)
{
this.MethodBody = body;
//VisitVariableDefinitionCollection(body.Variables);
//VisitInstructionCollection(body.Instructions);
//VisitExceptionHandlerCollection(body.ExceptionHandlers);
}
private static void EmitArchsInit(MethodBody body, FieldReference archRef, Action<Instruction> emit)
{
var module = body.Method.Module;
GenericInstanceType dictStrStrRef = (GenericInstanceType)archRef.FieldType;
TypeReference dictOpenRef = dictStrStrRef.ElementType;
GenericInstanceType iEqCompStrRef = new GenericInstanceType(module.Import(typeof(IEqualityComparer<>)));
iEqCompStrRef.GenericArguments.Add(dictOpenRef.GenericParameters[0]);
MethodReference dictStrStrCtor = CecilUtils.ImportInstanceMethodRef(module, dictStrStrRef, ".ctor", null, iEqCompStrRef);
MethodReference dictAddRef = CecilUtils.ImportInstanceMethodRef(module, dictStrStrRef, "Add", null, dictOpenRef.GenericParameters[0], dictOpenRef.GenericParameters[1]);
// Variables
body.Variables.Add(new VariableDefinition(dictStrStrRef));
int varIdx = body.Variables.Count - 1;
Instruction varSt = CecilUtils.ShortestStloc(varIdx);
Instruction varLd = CecilUtils.ShortestLdloc(varIdx);
emit(Instruction.Create(OpCodes.Ldnull));
emit(Instruction.Create(OpCodes.Newobj, dictStrStrCtor));
emit(varSt.Clone());
emit(varLd.Clone());
emit(Instruction.Create(OpCodes.Stsfld, archRef));
Action<string, string> emitAddPair = (k, v) =>
{
emit(varLd.Clone());
emit(Instruction.Create(OpCodes.Ldstr, k));
emit(Instruction.Create(OpCodes.Ldstr, v));
emit(Instruction.Create(OpCodes.Callvirt, dictAddRef));
};
emitAddPair("x86", "Win32");
emitAddPair("AMD64", "x64");
emitAddPair("IA64", "Itanium");
emitAddPair("ARM", "WinCE");
}
public void Write(MethodBody body, byte [][] variables)
{
CreateDocuments (body);
m_writer.OpenMethod (new SymbolToken ((int) body.Method.MetadataToken.ToUInt ()));
CreateScopes (body, body.Scopes, variables);
m_writer.CloseMethod ();
}
public override void TerminateMethodBody(MethodBody body)
{
long pos = m_binaryWriter.BaseStream.Position;
if (body.Variables.Count > 0 || body.ExceptionHandlers.Count > 0
|| m_codeWriter.BaseStream.Length >= 64 || body.MaxStack > 8) {
MethodHeader header = MethodHeader.FatFormat;
if (body.InitLocals)
header |= MethodHeader.InitLocals;
if (body.ExceptionHandlers.Count > 0)
header |= MethodHeader.MoreSects;
m_binaryWriter.Write ((byte) header);
m_binaryWriter.Write ((byte) 0x30); // (header size / 4) << 4
m_binaryWriter.Write ((short) body.MaxStack);
m_binaryWriter.Write ((int) m_codeWriter.BaseStream.Length);
m_binaryWriter.Write (((int) TokenType.Signature | body.LocalVarToken));
WriteExceptionHandlerCollection (body.ExceptionHandlers);
} else
m_binaryWriter.Write ((byte) ((byte) MethodHeader.TinyFormat |
m_codeWriter.BaseStream.Length << 2));
m_binaryWriter.Write (m_codeWriter);
m_binaryWriter.QuadAlign ();
m_reflectWriter.MetadataWriter.AddData (
(int) (m_binaryWriter.BaseStream.Position - pos));
}
/// <summary>
/// Create a new method in the declaring type of the given implicit implementation with the given name.
/// This method will call the implicit implementation.
/// </summary>
internal static MethodDefinition CreateExplicitStub(MethodDefinition implicitImpl, string name, MethodDefinition iMethod, bool avoidGenericParam)
{
// Create method
var newMethod = new MethodDefinition(name, implicitImpl.Attributes, implicitImpl.ReturnType);
newMethod.IsVirtual = false;
newMethod.IsAbstract = false;
newMethod.IsFinal = true;
// Clone generic parameters
foreach (var gp in implicitImpl.GenericParameters)
{
newMethod.GenericParameters.Add(new GenericParameter(gp.Name, newMethod));
}
// Update according to new context
var cloner = new TypeCloner(avoidGenericParam, implicitImpl.Module.TypeSystem);
newMethod.ReturnType = cloner.Get(implicitImpl.ReturnType, newMethod);
// Clone parameters
foreach (var p in iMethod.Parameters)
{
newMethod.Parameters.Add(new ParameterDefinition(p.Name, p.Attributes, cloner.Get(p.ParameterType, newMethod)));
}
// Add the method
var targetType = implicitImpl.DeclaringType;
targetType.Methods.Add(newMethod);
// Add override
newMethod.Overrides.Add(iMethod);
// Create method body
var body = new MethodBody(newMethod);
newMethod.Body = body;
var worker = body.GetILProcessor();
// Push this
worker.Emit(OpCodes.Ldarg, body.ThisParameter);
for (var i = 0; i < implicitImpl.Parameters.Count; i++)
{
var p = iMethod.Parameters[i];
var newMethodParam = newMethod.Parameters[i];
worker.Emit(OpCodes.Ldarg, newMethodParam);
if (/*avoidGenericParam &&*/ p.ParameterType.ContainsGenericParameter)
{
worker.Emit(OpCodes.Box, implicitImpl.Parameters[i].ParameterType);
}
}
worker.Emit(implicitImpl.IsVirtual ? OpCodes.Callvirt : OpCodes.Call, implicitImpl);
worker.Emit(OpCodes.Ret);
// Mark method reachable
if (implicitImpl.IsReachable)
{
newMethod.SetReachable(null);
}
return newMethod;
}
protected BlockStatement RunInternal(MethodBody body, BlockStatement block, ILanguage language)
{
try
{
if (body.Instructions.Count != 0 || body.Method.IsJustDecompileGenerated)
{
foreach (IDecompilationStep step in steps)
{
if (language != null && language.IsStopped)
{
break;
}
block = step.Process(Context, block);
}
}
}
finally
{
if (Context.MethodContext.IsMethodBodyChanged)
{
body.Method.RefreshBody();
}
}
return block;
}
public void Replace(MethodBody currentBody, ICollection<MethodReference> modifiedItems)
{
var invalidCalls = _callFilter.GetInvalidCalls(currentBody, modifiedItems);
if (invalidCalls.Count == 0)
return;
var currentInstructions = currentBody.Instructions.Cast<Instruction>().ToArray();
var stackCtor = _targetModule.ImportConstructor<Stack<object>>(new Type[0]);
var IL = currentBody.CilWorker;
var targetMethod = currentBody.Method;
var currentArgument = targetMethod.AddLocal<object>();
var currentArguments = targetMethod.AddLocal<Stack<object>>();
currentBody.Instructions.Clear();
// Create the stack that will hold the method arguments
IL.Emit(OpCodes.Newobj, stackCtor);
IL.Emit(OpCodes.Stloc, currentArguments);
foreach (var currentInstruction in currentInstructions)
{
var currentMethod = currentInstruction.Operand as MethodReference;
// Ignore any instructions that weren't affected by the
// interface extraction
if (currentMethod != null && invalidCalls.ContainsKey(currentMethod))
{
var context = new MethodContext(IL, currentArguments, currentMethod, currentArgument);
_replaceMethodCall.Replace(context, _targetModule);
}
IL.Append(currentInstruction);
}
}
public static bool ContainsCallTo(MethodBody m,
string methodFullName)
{
return m.Instructions.Any(i =>
(i.OpCode == OpCodes.Call || i.OpCode == OpCodes.Callvirt) &&
((MethodReference)i.Operand).FullName == methodFullName);
}
public void Analyze(MethodBody body, NodeBase analyzedNode)
{
if (analyzedNode is MethodNode)
((MethodNode)analyzedNode).CyclomaticComplexity = 0;
if (body == null)
return;
foreach (var instruction in body.Instructions) {
// IL cyclomatic complexity
if (instruction.OpCode.FlowControl == FlowControl.Cond_Branch && analyzedNode is MethodNode)
((MethodNode)analyzedNode).CyclomaticComplexity++;
var operand = ReadOperand(instruction);
if (operand is MethodReference) {
var md = ((MethodReference)operand).Resolve();
if (md != null && assemblies.Contains(md.DeclaringType.Module.Assembly) && mappings.cecilMappings.ContainsKey(md)) {
if (md.IsGetter || md.IsSetter) {
var propertyNode = mappings.propertyMappings[(IProperty)mappings.cecilMappings[md]];
analyzedNode.AddRelationship(propertyNode);
} else {
var methodNode = mappings.methodMappings[(IMethod)mappings.cecilMappings[md]];
analyzedNode.AddRelationship(methodNode);
}
}
} else if (operand is FieldReference) {
var fd = ((FieldReference)operand).Resolve();
if (fd != null && assemblies.Contains(fd.DeclaringType.Module.Assembly) && mappings.cecilMappings.ContainsKey(fd)) {
var fieldNode = mappings.fieldMappings[(IField)mappings.cecilMappings[fd]];
analyzedNode.AddRelationship(fieldNode);
}
}
}
}
public CecilVisitor(AssemblyDefinition assembly, ModuleDefinition module)
{
_assembly = assembly;
_module = module;
var program = _module.Types.First(t => t.Name == "Program");
_main = program.Methods.First(m => m.Name == "Main");
_body = _main.Body;
_instructions = _body.Instructions;
_instructions.Clear();
_objCtor = _module.Import(typeof(object).GetConstructor(new System.Type[0]));
var systemFunctions = _module.Types.First(t => t.Name == "SystemFunctions");
// Math methods
_fact = systemFunctions.Methods.First(m => m.Name == "Fact");
_max = systemFunctions.Methods.First(m => m.Name == "Max");
_min = systemFunctions.Methods.First(m => m.Name == "Min");
_pow = systemFunctions.Methods.First(m => m.Name == "Pow");
// Console methods
_printBool = systemFunctions.Methods.First(m => m.Name == "PrintBool");
_printInt = systemFunctions.Methods.First(m => m.Name == "PrintInt");
_userFunctions = _module.Types.First(t => t.Name == "UserFunctions");
}
internal ControlFlowGraphBuilder (MethodDefinition method)
{
body = method.Body;
if (body.ExceptionHandlers.Count > 0)
exception_objects_offsets = new HashSet<int> ();
}
protected override void ProxyMethod(MethodBody body, MethodReference proceedTargetMethod)
{
// Create base call
if (!Method.IsAbstract)
{
callBaseMethod = new MethodDefinition(Name + "$Base", MethodAttributes.Private, Method.ReturnType);
Method.CopyParameters(callBaseMethod);
Method.CopyGenericParameters(callBaseMethod);
callBaseMethod.Body.Emit(il =>
{
il.Emit(OpCodes.Ldarg_0);
for (var i = 0; i < Method.Parameters.Count; i++)
{
il.Emit(OpCodes.Ldarg, (short)i + 1);
}
var methodReference = GetProceedMethodTarget();
if (Method.GenericParameters.Count > 0)
methodReference = methodReference.MakeGenericMethod(callBaseMethod.GenericParameters.ToArray());
il.Emit(OpCodes.Call, methodReference);
il.Emit(OpCodes.Ret);
});
ClassWeaver.ProxyType.Methods.Add(callBaseMethod);
}
base.ProxyMethod(body, proceedTargetMethod);
}
public override Widget GetView()
{
if (scrolled_tree != null)
{
return(scrolled_tree);
}
// Create ui
store = new ListStore(typeof(string), typeof(string), typeof(string));
tree = new TreeView();
tree.Model = store;
tree.AppendColumn("Offset", new CellRendererText(), "text", 0);
tree.AppendColumn("Instruction", new CellRendererText(), "text", 1);
tree.AppendColumn("Operand", new CellRendererText(), "text", 2);
tree.HeadersVisible = true;
scrolled_tree = new ScrolledWindow();
scrolled_tree.Add(tree);
Mono.Cecil.Cil.MethodBody body = method.Body;
Mono.Cecil.Cil.Instruction instr;
if (body != null)
{
for (int i = 0; i < body.Instructions.Count; i++)
{
instr = body.Instructions [i];
store.AppendValues("IL_" + instr.Offset.ToString("0000"), instr.OpCode.ToString(), FormatOperand(instr.Operand));
}
}
return(scrolled_tree);
}
/// <summary>
/// Create the Ctor
/// </summary>
private static void CreateDefaultCtor(ReachableContext reachableContext, TypeDefinition type)
{
var typeSystem = type.Module.TypeSystem;
var ctor = new MethodDefinition(".ctor", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName, typeSystem.Void);
ctor.DeclaringType = type;
var body = new MethodBody(ctor);
body.InitLocals = true;
ctor.Body = body;
// Prepare code
var seq = new ILSequence();
seq.Emit(OpCodes.Nop);
seq.Emit(OpCodes.Ret);
// Append ret sequence
seq.AppendTo(body);
// Update offsets
body.ComputeOffsets();
// Add ctor
type.Methods.Add(ctor);
ctor.SetReachable(reachableContext);
}
internal DecompilationContext (MethodBody body, ControlFlowGraph cfg)
{
this.body = body;
this.method = body.Method;
this.variables = CloneCollection (body.Variables);
this.cfg = cfg;
}
/// <summary>
/// Create a CopyFrom method.
/// </summary>
private static MethodDefinition CreateCopyFromMethod(ReachableContext reachableContext, TypeDefinition type)
{
var typeSystem = type.Module.TypeSystem;
var method = new MethodDefinition(NameConstants.Struct.CopyFromMethodName, MethodAttributes.Public, type);
var sourceParam = new ParameterDefinition(type);
method.Parameters.Add(sourceParam);
method.DeclaringType = type;
var body = new MethodBody(method);
body.InitLocals = true;
method.Body = body;
// Prepare code
var seq = new ILSequence();
seq.Emit(OpCodes.Nop);
// Call base CopyFrom
var baseType = (type.BaseType != null) ? type.BaseType.GetElementType().Resolve() : null;
if ((baseType != null) && baseType.IsValueType && (baseType.FullName != "System.ValueType"))
{
var baseMethod = new MethodReference(NameConstants.Struct.CopyFromMethodName, baseType, baseType) { HasThis = true };
baseMethod.Parameters.Add(new ParameterDefinition(baseType));
seq.Emit(OpCodes.Ldarg, sourceParam);
seq.Emit(OpCodes.Call, baseMethod);
}
// Copy all fields
foreach (var field in type.Fields.Where(x => !x.IsStatic))
{
// Not need to bother with cloning struct-type fields here,
// as this will be done automatically by one of the Converters.
// Prepare for stfld
seq.Emit(OpCodes.Ldarg, body.ThisParameter);
// Load from source
seq.Emit(OpCodes.Ldarg, sourceParam);
seq.Emit(OpCodes.Ldfld, field);
// Save in this
seq.Emit(OpCodes.Stfld, field);
}
// Return this
seq.Emit(OpCodes.Ldarg, body.ThisParameter);
seq.Emit(OpCodes.Ret);
// Append ret sequence
seq.AppendTo(body);
// Update offsets
body.ComputeOffsets();
// Add method
type.Methods.Add(method);
method.SetReachable(reachableContext);
return method;
}
private void UpdateCallsToGetCurrentClassLogger(MethodBody ctorBody)
{
// Convert this:
//
// call class [Catel.Core]Catel.Logging.ILog [Catel.Core]Catel.Logging.LogManager::GetCurrentClassLogger()
// stsfld class [Catel.Core]Catel.Logging.ILog Catel.Fody.TestAssembly.LoggingClass::AutoLog
//
// into this:
//
// ldtoken Catel.Fody.TestAssembly.LoggingClass
// call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)
// call class [Catel.Core]Catel.Logging.ILog [Catel.Core]Catel.Logging.LogManager::GetLogger(class [mscorlib]System.Type)
// stsfld class [Catel.Core]Catel.Logging.ILog Catel.Fody.TestAssembly.LoggingClass::ManualLog
var type = ctorBody.Method.DeclaringType;
var instructions = ctorBody.Instructions;
for (var i = 0; i < instructions.Count; i++)
{
var instruction = instructions[i];
var methodReference = instruction.Operand as MethodReference;
if (methodReference != null)
{
FodyEnvironment.LogDebug($"Weaving auto log to specific log for '{type.FullName}'");
if (string.Equals(methodReference.Name, "GetCurrentClassLogger"))
{
// We have a possible match
var getLoggerMethod = GetGetLoggerMethod(methodReference.DeclaringType);
if (getLoggerMethod == null)
{
var point = instruction.SequencePoint;
var message = $"Cannot change method call for log '{type.FullName}', the GetLogger(type) method does not exist on the calling type (try to use LogManager.GetCurrentClassLogger())";
if (point != null)
{
FodyEnvironment.LogWarningPoint(message, point);
}
else
{
FodyEnvironment.LogWarning(message);
}
continue;
}
var getTypeFromHandle = type.Module.GetMethodAndImport("GetTypeFromHandle");
instructions.RemoveAt(i);
instructions.Insert(i,
Instruction.Create(OpCodes.Ldtoken, type),
Instruction.Create(OpCodes.Call, getTypeFromHandle),
Instruction.Create(OpCodes.Call, type.Module.Import(getLoggerMethod)));
}
}
}
}
public ControlFlowGraph(Mono.Cecil.Cil.MethodBody body, InstructionBlock[] blocks, Dictionary<int, InstructionData> instructionData, List<ExceptionHandlerData> exception_data, HashSet<int> exception_objects_offsets)
{
this.body = body;
this.blocks = blocks;
this.data = instructionData;
this.exception_data = exception_data;
this.exception_objects_offsets = exception_objects_offsets;
}
Instruction GetInstruction (MethodBody body, IDictionary instructions, int offset)
{
Instruction instr = (Instruction) instructions [offset];
if (instr != null)
return instr;
return body.Instructions.Outside;
}
public void InjectInstructions(MethodBody body, int line, params Instruction[] instructions)
{
foreach (Instruction instr in instructions)
{
body.Instructions.Insert(line, instr);
line++;
}
}
public ILBlock(MethodBody body) : this(ILBlockType.Root, 0, body.CodeSize)
{
AddExceptionHandlerBlocks(body);
List<InstructionPair> allBranches = FindAllBranches(body);
AddBlocks(allBranches);
SortChildren();
}
static void AssertOpCodeSequence (OpCode [] expected, MethodBody body)
{
var opcodes = body.Instructions.Select (i => i.OpCode).ToArray ();
Assert.AreEqual (expected.Length, opcodes.Length);
for (int i = 0; i < opcodes.Length; i++)
Assert.AreEqual (expected [i], opcodes [i]);
}
string GetFileForMethodBody(MethodBody body)
{
if(body == null)
return null;
SequencePoint sp = body.Instructions[0].SequencePoint;
return sp.Document.Url;
}
static string GetVariableName(VariableDefinition variable, MethodBody body)
{
string name;
if (body.Method.DebugInformation.TryGetName (variable, out name))
return name;
return variable.ToString ();
}
internal static MethodBody Clone(MethodBody body, MethodDefinition parent, ImportContext context)
{
MethodBody nb = new MethodBody(parent);
nb.MaxStack = body.MaxStack;
nb.InitLocals = body.InitLocals;
nb.CodeSize = body.CodeSize;
CilWorker worker = nb.CilWorker;
if (body.HasVariables)
{
foreach (VariableDefinition var in body.Variables)
{
nb.Variables.Add(new VariableDefinition(
var.Name, var.Index, parent,
context.Import(var.VariableType)));
}
}
foreach (Instruction instr in body.Instructions)
{
Instruction ni = new Instruction(instr.OpCode);
switch (instr.OpCode.OperandType)
{
case OperandType.InlineParam:
case OperandType.ShortInlineParam:
if (instr.Operand == body.Method.This)
{
ni.Operand = nb.Method.This;
}
else
{
int param = body.Method.Parameters.IndexOf((ParameterDefinition)instr.Operand);
ni.Operand = parent.Parameters [param];
}
break;
case OperandType.InlineVar:
case OperandType.ShortInlineVar:
int var = body.Variables.IndexOf((VariableDefinition)instr.Operand);
ni.Operand = nb.Variables [var];
break;
case OperandType.InlineField:
ni.Operand = context.Import((FieldReference)instr.Operand);
break;
case OperandType.InlineMethod:
ni.Operand = context.Import((MethodReference)instr.Operand);
break;
case OperandType.InlineType:
ni.Operand = context.Import((TypeReference)instr.Operand);
break;
case OperandType.InlineTok:
if (instr.Operand is TypeReference)
{
ni.Operand = context.Import((TypeReference)instr.Operand);
}
else if (instr.Operand is FieldReference)
{
ni.Operand = context.Import((FieldReference)instr.Operand);
}
else if (instr.Operand is MethodReference)
{
ni.Operand = context.Import((MethodReference)instr.Operand);
}
break;
case OperandType.ShortInlineBrTarget:
case OperandType.InlineBrTarget:
case OperandType.InlineSwitch:
break;
default:
ni.Operand = instr.Operand;
break;
}
worker.Append(ni);
}
for (int i = 0; i < body.Instructions.Count; i++)
{
Instruction instr = nb.Instructions [i];
Instruction oldi = body.Instructions [i];
if (instr.OpCode.OperandType == OperandType.InlineSwitch)
{
Instruction [] olds = (Instruction [])oldi.Operand;
Instruction [] targets = new Instruction [olds.Length];
for (int j = 0; j < targets.Length; j++)
{
targets [j] = GetInstruction(body, nb, olds [j]);
}
instr.Operand = targets;
}
else if (instr.OpCode.OperandType == OperandType.ShortInlineBrTarget || instr.OpCode.OperandType == OperandType.InlineBrTarget)
{
instr.Operand = GetInstruction(body, nb, (Instruction)oldi.Operand);
}
}
if (!body.HasExceptionHandlers)
{
return(nb);
}
foreach (ExceptionHandler eh in body.ExceptionHandlers)
{
ExceptionHandler neh = new ExceptionHandler(eh.Type);
neh.TryStart = GetInstruction(body, nb, eh.TryStart);
neh.TryEnd = GetInstruction(body, nb, eh.TryEnd);
neh.HandlerStart = GetInstruction(body, nb, eh.HandlerStart);
neh.HandlerEnd = GetInstruction(body, nb, eh.HandlerEnd);
switch (eh.Type)
{
case ExceptionHandlerType.Catch:
neh.CatchType = context.Import(eh.CatchType);
break;
case ExceptionHandlerType.Filter:
neh.FilterStart = GetInstruction(body, nb, eh.FilterStart);
neh.FilterEnd = GetInstruction(body, nb, eh.FilterEnd);
break;
}
nb.ExceptionHandlers.Add(neh);
}
return(nb);
}
public override void VisitInstructionCollection(InstructionCollection instructions)
{
MethodBody body = instructions.Container;
long start = m_codeWriter.BaseStream.Position;
ComputeMaxStack(instructions);
foreach (Instruction instr in instructions)
{
instr.Offset = (int)(m_codeWriter.BaseStream.Position - start);
if (instr.OpCode.Size == 1)
{
m_codeWriter.Write(instr.OpCode.Op2);
}
else
{
m_codeWriter.Write(instr.OpCode.Op1);
m_codeWriter.Write(instr.OpCode.Op2);
}
if (instr.OpCode.OperandType != OperandType.InlineNone &&
instr.Operand == null)
{
throw new ReflectionException("OpCode {0} have null operand", instr.OpCode.Name);
}
switch (instr.OpCode.OperandType)
{
case OperandType.InlineNone:
break;
case OperandType.InlineSwitch:
Instruction[] targets = (Instruction[])instr.Operand;
for (int i = 0; i < targets.Length + 1; i++)
{
m_codeWriter.Write((uint)0);
}
break;
case OperandType.ShortInlineBrTarget:
m_codeWriter.Write((byte)0);
break;
case OperandType.InlineBrTarget:
m_codeWriter.Write(0);
break;
case OperandType.ShortInlineI:
if (instr.OpCode == OpCodes.Ldc_I4_S)
{
m_codeWriter.Write((sbyte)instr.Operand);
}
else
{
m_codeWriter.Write((byte)instr.Operand);
}
break;
case OperandType.ShortInlineVar:
m_codeWriter.Write((byte)body.Variables.IndexOf(
(VariableDefinition)instr.Operand));
break;
case OperandType.ShortInlineParam:
m_codeWriter.Write((byte)GetParameterIndex(body, (ParameterDefinition)instr.Operand));
break;
case OperandType.InlineSig:
WriteToken(GetCallSiteToken((CallSite)instr.Operand));
break;
case OperandType.InlineI:
m_codeWriter.Write((int)instr.Operand);
break;
case OperandType.InlineVar:
m_codeWriter.Write((short)body.Variables.IndexOf(
(VariableDefinition)instr.Operand));
break;
case OperandType.InlineParam:
m_codeWriter.Write((short)GetParameterIndex(
body, (ParameterDefinition)instr.Operand));
break;
case OperandType.InlineI8:
m_codeWriter.Write((long)instr.Operand);
break;
case OperandType.ShortInlineR:
m_codeWriter.Write((float)instr.Operand);
break;
case OperandType.InlineR:
m_codeWriter.Write((double)instr.Operand);
break;
case OperandType.InlineString:
WriteToken(new MetadataToken(TokenType.String,
m_reflectWriter.MetadataWriter.AddUserString(instr.Operand as string)));
break;
case OperandType.InlineField:
if (instr.Operand is FieldReference)
{
WriteToken((instr.Operand as FieldReference).MetadataToken);
}
else
{
throw new ReflectionException("Wrong operand for InlineField: {0}",
instr.Operand.GetType().FullName);
}
break;
case OperandType.InlineMethod:
if (instr.Operand is GenericInstanceMethod)
{
WriteToken(m_reflectWriter.GetMethodSpecToken(instr.Operand as GenericInstanceMethod));
}
else if (instr.Operand is MethodReference)
{
WriteToken((instr.Operand as MethodReference).MetadataToken);
}
else
{
throw new ReflectionException("Wrong operand for InlineMethod: {0}",
instr.Operand.GetType().FullName);
}
break;
case OperandType.InlineType:
if (instr.Operand is TypeReference)
{
WriteToken(m_reflectWriter.GetTypeDefOrRefToken(
instr.Operand as TypeReference));
}
else
{
throw new ReflectionException("Wrong operand for InlineType: {0}",
instr.Operand.GetType().FullName);
}
break;
case OperandType.InlineTok:
if (instr.Operand is TypeReference)
{
WriteToken(m_reflectWriter.GetTypeDefOrRefToken(
instr.Operand as TypeReference));
}
else if (instr.Operand is GenericInstanceMethod)
{
WriteToken(m_reflectWriter.GetMethodSpecToken(instr.Operand as GenericInstanceMethod));
}
else if (instr.Operand is IMetadataTokenProvider)
{
WriteToken((instr.Operand as IMetadataTokenProvider).MetadataToken);
}
else
{
throw new ReflectionException(
string.Format("Wrong operand for {0} OpCode: {1}",
instr.OpCode.OperandType,
instr.Operand.GetType().FullName));
}
break;
}
}
long pos = m_codeWriter.BaseStream.Position;
foreach (Instruction instr in instructions)
{
switch (instr.OpCode.OperandType)
{
case OperandType.InlineSwitch:
m_codeWriter.BaseStream.Position = instr.Offset + instr.OpCode.Size;
Instruction[] targets = (Instruction[])instr.Operand;
m_codeWriter.Write((uint)targets.Length);
foreach (Instruction tgt in targets)
{
m_codeWriter.Write((tgt.Offset - (instr.Offset +
instr.OpCode.Size + (4 * (targets.Length + 1)))));
}
break;
case OperandType.ShortInlineBrTarget:
m_codeWriter.BaseStream.Position = instr.Offset + instr.OpCode.Size;
m_codeWriter.Write((byte)(((Instruction)instr.Operand).Offset -
(instr.Offset + instr.OpCode.Size + 1)));
break;
case OperandType.InlineBrTarget:
m_codeWriter.BaseStream.Position = instr.Offset + instr.OpCode.Size;
m_codeWriter.Write(((Instruction)instr.Operand).Offset -
(instr.Offset + instr.OpCode.Size + 4));
break;
}
}
m_codeWriter.BaseStream.Position = pos;
}
public void PatchModifications()
{
foreach (XElement classNode in mModifications.Elements("Class"))
{
// We load the class in which the modifications will take place
string nameTypeToPatch = classNode.Attribute("Name").Value;
TypeDefinition typeToPatch = GetAssembly("Assembly-CSharp").MainModule.Types.FirstOrDefault(t => t.Name == nameTypeToPatch);
if (typeToPatch == null)
{
MessageBox.Show("Couldn't find type/class named" + nameTypeToPatch, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
continue;
}
foreach (XElement methodNode in classNode.Elements("Method"))
{
string nameMethodTopatch = methodNode.Attribute("Name").Value;
MethodDefinition methodToPatch = typeToPatch.Methods.FirstOrDefault(m => m.Name == nameMethodTopatch);
if (methodToPatch == null)
{
MessageBox.Show("Couldn't find method named" + nameMethodTopatch, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
continue;
}
Mono.Cecil.Cil.MethodBody methodBody = methodToPatch.Body;
ILProcessor processor = methodBody.GetILProcessor();
// By default, we place the modification just before the "ret" instruction
// (i.e. before the last instruction)
int indexBegin = methodToPatch.Body.Instructions.Count - 1;
// But, if the user specified a location, we place the modification there
if (methodNode.Attribute("Location") != null)
{
indexBegin = int.Parse(methodNode.Attribute("Location").Value);
}
// If the user specified a count of instructions to delete,
// we delete them
if (methodNode.Attribute("DeleteCount") != null)
{
int countInstrToDelete = int.Parse(methodNode.Attribute("DeleteCount").Value);
for (int i = 0; i < countInstrToDelete; i++)
{
processor.Remove(methodToPatch.Body.Instructions.ElementAt(indexBegin));
}
}
Instruction locationInstr = methodToPatch.Body.Instructions.ElementAt(indexBegin);
Instruction prevInstr = locationInstr.Previous;
foreach (XElement instrNode in methodNode.Elements("Instruction"))
{
Instruction instr = Call.ParseInstruction(processor, typeToPatch, instrNode);
//MessageBox.Show(instr.ToString());
if (instr == null)
{
continue;
}
if (prevInstr == null)
{
processor.InsertBefore(locationInstr, instr);
}
else
{
processor.InsertAfter(prevInstr, instr);
}
prevInstr = instr;
}
// Optimize the method
methodToPatch.Body.OptimizeMacros();
}
}
}
void checkPatchStatus()
{
mscloaderUpdate = false;
isgameUpdated = false;
oldPatchFound = false;
oldFilesFound = false;
button1.Enabled = false;
button3.Enabled = false;
bool newpatchfound = false;
bool oldpatchfound = false;
TypeDefinition typeToPatch = AssemblyDefinition.ReadAssembly(AssemblyFullPath).MainModule.Types.FirstOrDefault(t => t.Name == "PlayMakerArrayListProxy");
MethodDefinition methodToPatch = typeToPatch.Methods.FirstOrDefault(m => m.Name == "Awake");
Mono.Cecil.Cil.MethodBody methodBody = methodToPatch.Body;
// MessageBox.Show(methodBody.CodeSize.ToString()); //debug
if (methodBody.CodeSize == 24)
{
//not patched
newpatchfound = false;
}
else if (methodBody.CodeSize == 29)
{
//patch found
newpatchfound = true;
}
if (!newpatchfound)
{
TypeDefinition typeToPatch2 = AssemblyDefinition.ReadAssembly(AssemblyFullPath).MainModule.Types.FirstOrDefault(t => t.Name == "StartGame");
MethodDefinition methodToPatch2 = typeToPatch2.Methods.FirstOrDefault(m => m.Name == ".ctor");
Mono.Cecil.Cil.MethodBody methodBody2 = methodToPatch2.Body;
if (methodBody2.CodeSize == 18)
{
//not patched
oldpatchfound = false;
}
else if (methodBody2.CodeSize == 23)
{
//0.1 patch found
oldpatchfound = true;
}
}
if (!newpatchfound && !oldpatchfound)
{
if (File.Exists(Path.Combine(mscPath, @"mysummercar_Data\Managed\Assembly-CSharp.original.dll")))
{
statusLabelText.Text = "Not patched, but MSCLoader 0.1 found (probably there was game update)";
Log("Patch not found, but MSCLoader 0.1 files found (probably there was game update)");
button1.Text = "Install MSCLoader";
button1.Enabled = true;
oldFilesFound = true;
}
else if (File.Exists(Path.Combine(mscPath, @"mysummercar_Data\Managed\MSCLoader.dll")) && File.Exists(Path.Combine(mscPath, @"mysummercar_Data\Managed\Assembly-CSharp.dll.backup")))
{
statusLabelText.Text = "Not patched, but MSCLoader found (probably there was game update)";
Log("Patch not found, but MSCLoader files found (looks like there was game update)");
button1.Text = "Install MSCLoader";
button1.Enabled = true;
isgameUpdated = true;
}
else
{
statusLabelText.Text = "Not installed";
Log("Patch not found, ready to install patch");
button1.Text = "Install MSCLoader";
button1.Enabled = true;
}
statusLabelText.ForeColor = Color.Red;
}
else if (newpatchfound)
{
if (MD5HashFile(Path.Combine(mscPath, @"mysummercar_Data\Managed\MSCLoader.dll")) == MD5HashFile(Path.GetFullPath(Path.Combine("MSCLoader.dll", ""))))
{
statusLabelText.Text = "Installed, MSCLoader.dll is up to date.";
Log("Newest patch found, no need to patch again");
button1.Enabled = false;
button3.Enabled = true;
statusLabelText.ForeColor = Color.Green;
mscloaderUpdate = false;
}
else
{
statusLabelText.Text = "Installed, but MSCLoader.dll mismatch, Update?";
Log("Newest patch found, but MSCLoader.dll version mismatch, update MSCLoader?");
button1.Enabled = true;
button1.Text = "Update MSCLoader";
button3.Enabled = true;
statusLabelText.ForeColor = Color.Blue;
mscloaderUpdate = true;
}
}
else if (oldpatchfound)
{
statusLabelText.Text = "0.1 patch found, upgrade available";
Log("Old patch found, ready to upgrade");
button1.Text = "Upgrade MSCLoader";
button1.Enabled = true;
statusLabelText.ForeColor = Color.Orange;
oldPatchFound = true;
}
}
public void Write(Mono.Cecil.Cil.MethodBody body)
{
}
internal CilWorker(MethodBody body)
{
m_mbody = body;
m_instrs = m_mbody.Instructions;
}
private static void EncapsulateMethod(AssemblyDefinition assembly, ModuleDefinition module,
TypeDefinition type, MethodDefinition method, string overrideName = null, string overrideMethod =
nameof(AOPProcessor.OnMethod))
{
// New body for current method (capsule)
var newMethodBody = new List <Instruction>();
newMethodBody.Add(Instruction.Create(method.IsStatic ? OpCodes.Ldnull : OpCodes.Ldarg_0)); // ldnull / ldarg_0
newMethodBody.Add(Instruction.Create(OpCodes.Ldtoken, type));
newMethodBody.Add(Instruction.Create(OpCodes.Call, typeof(Type).GetMonoMethod(module, nameof(Type.GetTypeFromHandle))));
var mName = method.Name;
if (!string.IsNullOrEmpty(overrideName))
{
mName = overrideName;
}
newMethodBody.Add(Instruction.Create(OpCodes.Ldstr, mName));
newMethodBody.Add(Instruction.Create(OpCodes.Ldc_I4, method.Parameters.Count));
newMethodBody.Add(Instruction.Create(OpCodes.Newarr, module.ImportReference(typeof(object))));
for (var num = 0; num < method.Parameters.Count; num++)
{
var param = method.Parameters[num];
var pType = param.ParameterType;
newMethodBody.Add(Instruction.Create(OpCodes.Dup));
newMethodBody.Add(Instruction.Create(OpCodes.Ldc_I4, num));
newMethodBody.Add(Instruction.Create(OpCodes.Ldarg, param));
if (param.ParameterType.IsValueType || param.ParameterType.IsGenericParameter)
{
newMethodBody.Add(Instruction.Create(OpCodes.Box, pType));
}
newMethodBody.Add(Instruction.Create(OpCodes.Stelem_Ref));
}
if (module.HasType(typeof(AOPProcessor)))
{
newMethodBody.Add(Instruction.Create(OpCodes.Call,
module.GetType(typeof(AOPProcessor))
.GetMethod(overrideMethod)));
}
else
{
newMethodBody.Add(Instruction.Create(OpCodes.Call, typeof(AOPProcessor).GetMonoMethod(module,
overrideMethod)));
}
if (method.ReturnType.FullName != typeof(void).FullName)
{
if (method.ReturnType.IsValueType)
{
newMethodBody.Add(Instruction.Create(OpCodes.Unbox_Any, method.ReturnType));
}
}
else
{
newMethodBody.Add(Instruction.Create(OpCodes.Pop));
}
newMethodBody.Add(Instruction.Create(OpCodes.Ret));
// Create new method
var internalMethod = new MethodDefinition(method.Name + AOPProcessor.APPENDIX, method.Attributes, method.ReturnType);
foreach (var param in method.Parameters)
{
var newParam = new ParameterDefinition(param.Name, param.Attributes, param.ParameterType);
newParam.HasDefault = false;
newParam.IsOptional = false;
internalMethod.Parameters
.Add(newParam);
}
// Copy generic parameters
foreach (var genericParameter in method.GenericParameters)
{
internalMethod.GenericParameters
.Add(new GenericParameter(genericParameter.Name, internalMethod));
}
var bodyClone = new MethodBody(method);
bodyClone.AppendInstructions(newMethodBody);
bodyClone.MaxStackSize = 8;
// Replace method bodies
internalMethod.Body = method.Body;
method.Body = bodyClone;
type.Methods.Add(internalMethod);
}
private void ExtractBasicBlocksOfMethod(MethodReference method_reference)
{
MethodReference original_method_reference = method_reference;
_methods_done.Add(original_method_reference.FullName);
// MethodReference new_method_reference = original_method_reference.SubstituteMethod2();
// method_reference = new_method_reference != null ? new_method_reference : original_method_reference;
MethodDefinition method_definition = method_reference.Resolve();
if (method_definition == null || method_definition.Body == null)
{
return;
}
int change_set = Cfg.StartChangeSet();
int instruction_count = method_definition.Body.Instructions.Count;
List <INST> split_point = new List <INST>();
CFG.Vertex basic_block = (CFG.Vertex)Cfg.AddVertex(new CFG.Vertex()
{
Name = Cfg.NewNodeNumber().ToString()
});
basic_block._method_definition = method_definition;
basic_block._method_reference = original_method_reference;
basic_block.Entry = basic_block;
basic_block.Exit = basic_block;
basic_block.Entry.BlocksOfMethod = new List <CFG.Vertex>();
basic_block.Entry.BlocksOfMethod.Add(basic_block);
Cfg.Entries.Add(basic_block);
// Add instructions to the basic block, including debugging information.
// First, get debugging information on line/column/offset in method.
if (!original_method_reference.Module.HasSymbols)
{
// Try to get symbols, but if none available, don't worry about it.
try { original_method_reference.Module.ReadSymbols(); } catch { }
}
var symbol_reader = original_method_reference.Module.SymbolReader;
var method_debug_information = symbol_reader?.Read(method_definition);
Collection <SequencePoint> sequence_points = method_debug_information != null ? method_debug_information.SequencePoints : new Collection <SequencePoint>();
Mono.Cecil.Cil.MethodBody body = method_definition.Body;
if (body == null)
{
throw new Exception("Body null, not expecting it to be.");
}
if (body.Instructions == null)
{
throw new Exception("Body has instructions collection.");
}
if (body.Instructions.Count == 0)
{
throw new Exception("Body instruction count is zero.");
}
SequencePoint previous_sp = null;
for (int j = 0; j < instruction_count; ++j)
{
Mono.Cecil.Cil.Instruction instruction = body.Instructions[j];
SequencePoint sp = sequence_points.Where(s => { return(s.Offset == instruction.Offset); }).FirstOrDefault();
if (sp == null)
{
sp = previous_sp;
}
INST wrapped_instruction = INST.Wrap(instruction, basic_block, sp);
basic_block.Instructions.Add(wrapped_instruction);
if (sp != null)
{
previous_sp = sp;
}
}
var instructions_before_splits = basic_block.Instructions.ToList();
// Accumulate targets of jumps. These are split points for block "v".
// Accumalated splits are in "leader_list" following this for-loop.
for (int j = 0; j < instruction_count; ++j)
{
INST wrapped_instruction = basic_block.Instructions[j];
Mono.Cecil.Cil.OpCode opcode = wrapped_instruction.OpCode;
Mono.Cecil.Cil.FlowControl flow_control = opcode.FlowControl;
switch (flow_control)
{
case Mono.Cecil.Cil.FlowControl.Branch:
case Mono.Cecil.Cil.FlowControl.Cond_Branch:
{
object operand = wrapped_instruction.Operand;
// Two cases of branches:
// 1) operand is a single instruction;
// 2) operand is an array of instructions via a switch instruction.
// In doing this type casting, the resulting instructions are turned
// into def's, and operands no longer correspond to what was in the original
// method. We override the List<> compare to correct this problem.
Mono.Cecil.Cil.Instruction single_instruction = operand as Mono.Cecil.Cil.Instruction;
Mono.Cecil.Cil.Instruction[] array_of_instructions = operand as Mono.Cecil.Cil.Instruction[];
if (single_instruction != null)
{
INST sp = null;
for (int i = 0; i < basic_block.Instructions.Count(); ++i)
{
if (basic_block.Instructions[i].Offset == single_instruction.Offset &&
basic_block.Instructions[i].OpCode == single_instruction.OpCode)
{
sp = basic_block.Instructions[i];
break;
}
}
if (sp == null)
{
throw new Exception("Instruction go to not found.");
}
bool found = false;
foreach (INST split in split_point)
{
if (split.Offset == sp.Offset && split.OpCode == sp.OpCode)
{
found = true;
break;
}
}
if (!found)
{
split_point.Add(sp);
}
}
else if (array_of_instructions != null)
{
foreach (var ins in array_of_instructions)
{
Debug.Assert(ins != null);
INST sp = null;
for (int i = 0; i < basic_block.Instructions.Count(); ++i)
{
if (basic_block.Instructions[i].Offset == ins.Offset &&
basic_block.Instructions[i].OpCode == ins.OpCode)
{
sp = basic_block.Instructions[i];
break;
}
}
if (sp == null)
{
throw new Exception("Instruction go to not found.");
}
bool found = false;
foreach (INST split in split_point)
{
if (split.Offset == sp.Offset && split.OpCode == sp.OpCode)
{
found = true;
break;
}
}
if (!found)
{
split_point.Add(sp);
}
}
}
else
{
throw new Exception("Unknown operand type for basic block partitioning.");
}
}
break;
}
// Split blocks after certain instructions, too.
switch (flow_control)
{
case Mono.Cecil.Cil.FlowControl.Branch:
case Mono.Cecil.Cil.FlowControl.Call:
case Mono.Cecil.Cil.FlowControl.Cond_Branch:
case Mono.Cecil.Cil.FlowControl.Return:
case Mono.Cecil.Cil.FlowControl.Throw:
{
if (flow_control == Mono.Cecil.Cil.FlowControl.Call && !Campy.Utils.Options.IsOn("split_at_calls"))
{
break;
}
if (j + 1 < instruction_count)
{
var ins = basic_block.Instructions[j + 1].Instruction;
INST sp = null;
for (int i = 0; i < basic_block.Instructions.Count(); ++i)
{
if (basic_block.Instructions[i].Offset == ins.Offset &&
basic_block.Instructions[i].OpCode == ins.OpCode)
{
sp = basic_block.Instructions[i];
break;
}
}
if (sp == null)
{
throw new Exception("Instruction go to not found.");
}
bool found = false;
foreach (INST split in split_point)
{
if (split.Offset == sp.Offset && split.OpCode == sp.OpCode)
{
found = true;
break;
}
}
if (!found)
{
split_point.Add(sp);
}
}
}
break;
}
}
// Get try-catch blocks and add those split points.
foreach (var eh in body.ExceptionHandlers)
{
var start = eh.TryStart;
var end = eh.TryEnd;
// Split at try start.
Instruction ins = start;
INST sp = null;
for (int i = 0; i < basic_block.Instructions.Count(); ++i)
{
if (basic_block.Instructions[i].Offset == ins.Offset &&
basic_block.Instructions[i].OpCode == ins.OpCode)
{
sp = basic_block.Instructions[i];
break;
}
}
if (sp == null)
{
throw new Exception("Instruction go to not found.");
}
bool found = false;
foreach (INST split in split_point)
{
if (split.Offset == sp.Offset && split.OpCode == sp.OpCode)
{
found = true;
break;
}
}
if (!found)
{
split_point.Add(sp);
}
}
// Note, we assume that these splits are within the same method.
// Order the list according to offset from beginning of the method.
List <INST> ordered_leader_list = new List <INST>();
for (int j = 0; j < instruction_count; ++j)
{
// Order jump targets. These denote locations
// where to split blocks. However, it's ordered,
// so that splitting is done from last instruction in block
// to first instruction in block.
INST i = basic_block.Instructions[j];
if (split_point.Contains(i,
new LambdaComparer <INST>(
(INST a, INST b)
=>
{
if (a.Offset != b.Offset)
{
return(false);
}
if (a.OpCode != b.OpCode)
{
return(false);
}
return(true);
})))
{
ordered_leader_list.Add(i);
}
}
if (ordered_leader_list.Count != split_point.Count)
{
throw new Exception(
"Mono Cecil giving weird results for instruction operand type casting. Size of original split points not the same as order list of split points.");
}
// Split block at all jump targets.
foreach (INST i in ordered_leader_list)
{
var owner = Cfg.PeekChangeSet(change_set).Where(
n => n.Instructions.Where(ins =>
{
if (ins.Offset != i.Offset)
{
return(false);
}
if (ins.OpCode != i.OpCode)
{
return(false);
}
return(true);
}
).Any()).ToList();
// Check if there are multiple nodes with the same instruction or if there isn't
// any node found containing the instruction. Either way, it's a programming error.
if (owner.Count != 1)
{
throw new Exception("Cannot find instruction!");
}
CFG.Vertex target_node = owner.FirstOrDefault();
var j = target_node.Instructions.FindIndex(a =>
{
if (a.Offset != i.Offset)
{
return(false);
}
if (a.OpCode != i.OpCode)
{
return(false);
}
return(true);
});
CFG.Vertex new_node = Split(target_node, j);
}
LambdaComparer <Instruction> fixed_comparer = new LambdaComparer <Instruction>(
(Instruction a, Instruction b)
=> a.Offset == b.Offset &&
a.OpCode == b.OpCode
);
// Add in all edges.
var list_new_nodes = Cfg.PopChangeSet(change_set);
foreach (var node in list_new_nodes)
{
int node_instruction_count = node.Instructions.Count;
INST last_instruction = node.Instructions[node_instruction_count - 1];
Mono.Cecil.Cil.OpCode opcode = last_instruction.OpCode;
Mono.Cecil.Cil.FlowControl flow_control = opcode.FlowControl;
// Add jump edge.
switch (flow_control)
{
case Mono.Cecil.Cil.FlowControl.Branch:
case Mono.Cecil.Cil.FlowControl.Cond_Branch:
{
// Two cases: i.Operand is a single instruction, or an array of instructions.
if (last_instruction.Operand as Mono.Cecil.Cil.Instruction != null)
{
// Handel leave instructions with code below.
if (!(last_instruction.OpCode.Code == Code.Leave ||
last_instruction.OpCode.Code == Code.Leave_S))
{
Mono.Cecil.Cil.Instruction target_instruction =
last_instruction.Operand as Mono.Cecil.Cil.Instruction;
CFG.Vertex target_node = list_new_nodes.FirstOrDefault(
(CFG.Vertex x) =>
{
if (!fixed_comparer.Equals(x.Instructions.First().Instruction,
target_instruction))
{
return(false);
}
return(true);
});
if (target_node != null)
{
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = target_node
});
}
}
}
else if (last_instruction.Operand as Mono.Cecil.Cil.Instruction[] != null)
{
foreach (Mono.Cecil.Cil.Instruction target_instruction in
(last_instruction.Operand as Mono.Cecil.Cil.Instruction[]))
{
CFG.Vertex target_node = list_new_nodes.FirstOrDefault(
(CFG.Vertex x) =>
{
if (!fixed_comparer.Equals(x.Instructions.First().Instruction, target_instruction))
{
return(false);
}
return(true);
});
if (target_node != null)
{
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = target_node
});
}
}
}
else
{
throw new Exception("Unknown operand type for conditional branch.");
}
break;
}
}
// Add fall through edge.
switch (flow_control)
{
//case Mono.Cecil.Cil.FlowControl.Branch:
//case Mono.Cecil.Cil.FlowControl.Break:
case Mono.Cecil.Cil.FlowControl.Call:
case Mono.Cecil.Cil.FlowControl.Cond_Branch:
case Mono.Cecil.Cil.FlowControl.Meta:
case Mono.Cecil.Cil.FlowControl.Next:
case Mono.Cecil.Cil.FlowControl.Phi:
case Mono.Cecil.Cil.FlowControl.Throw:
{
int next = instructions_before_splits.FindIndex(
n =>
{
var r = n == last_instruction;
return(r);
}
);
if (next < 0)
{
break;
}
next += 1;
if (next >= instructions_before_splits.Count)
{
break;
}
var next_instruction = instructions_before_splits[next];
var owner = next_instruction.Block;
CFG.Vertex target_node = owner;
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = target_node
});
}
break;
case Mono.Cecil.Cil.FlowControl.Return:
if (last_instruction.Instruction.OpCode.Code == Code.Endfinally)
{
// Although the exception handling is like a procedure call,
// local variables are all accessible. So, we need to copy stack
// values around. In addition, we have to create a fall through
// even though there is stack unwinding.
int next = instructions_before_splits.FindIndex(
n =>
{
var r = n == last_instruction;
return(r);
}
);
if (next < 0)
{
break;
}
next += 1;
if (next >= instructions_before_splits.Count)
{
break;
}
var next_instruction = instructions_before_splits[next];
var owner = next_instruction.Block;
CFG.Vertex target_node = owner;
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = target_node
});
}
break;
}
}
// Get inclusive start/exclusive end ranges of try/catch/finally.
Dictionary <int, int> exclusive_eh_range = new Dictionary <int, int>();
foreach (var eh in body.ExceptionHandlers)
{
int try_start = eh.TryStart.Offset;
int eh_end = eh.TryEnd != null ? eh.TryEnd.Offset : 0;
if (eh.TryEnd != null && eh.TryEnd.Offset > eh_end)
{
eh_end = eh.TryEnd.Offset;
}
if (eh.HandlerEnd != null && eh.HandlerEnd.Offset > eh_end)
{
eh_end = eh.HandlerEnd.Offset;
}
exclusive_eh_range[try_start] = eh_end;
}
// Get inclusive start/inclusive end ranges of try/catch/finally.
Dictionary <int, int> inclusive_eh_range = new Dictionary <int, int>();
foreach (var pair in exclusive_eh_range)
{
int previous_instruction_address = 0;
foreach (var i in body.Instructions)
{
if (pair.Value == i.Offset)
{
inclusive_eh_range[pair.Key] = previous_instruction_address;
break;
}
previous_instruction_address = i.Offset;
}
}
// Get "finally" blocks for each try, if there is one.
Dictionary <int, CFG.Vertex> try_finally_block = new Dictionary <int, CFG.Vertex>();
foreach (var eh in body.ExceptionHandlers)
{
if (eh.HandlerType == ExceptionHandlerType.Finally)
{
var finally_entry_block = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == eh.HandlerStart.Offset)
{
return(true);
}
else
{
return(false);
}
}).First();
try_finally_block[eh.TryStart.Offset] = finally_entry_block;
}
}
// Set block properties.
foreach (var eh in body.ExceptionHandlers)
{
var block = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == eh.HandlerStart.Offset)
{
return(true);
}
else
{
return(false);
}
}).First();
block.CatchType = eh.CatchType;
block.IsCatch = eh.HandlerType == ExceptionHandlerType.Catch;
block.ExceptionHandler = eh;
}
// Get "try" block for each try.
Dictionary <int, CFG.Vertex> try_entry_block = new Dictionary <int, CFG.Vertex>();
foreach (var pair in inclusive_eh_range)
{
int start = pair.Key;
var entry_block = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == start)
{
return(true);
}
else
{
return(false);
}
}).First();
try_entry_block[start] = entry_block;
}
// Get entry block for each exception handler.
Dictionary <int, CFG.Vertex> eh_entry_block = new Dictionary <int, CFG.Vertex>();
foreach (var eh in body.ExceptionHandlers)
{
int start = eh.HandlerStart.Offset;
var entry_block = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == start)
{
return(true);
}
else
{
return(false);
}
}).First();
eh_entry_block[start] = entry_block;
}
foreach (var eh in body.ExceptionHandlers)
{
int start = eh.TryStart.Offset;
var try_block = try_entry_block[start];
int eh_start = eh.HandlerStart.Offset;
var eh_block = eh_entry_block[eh_start];
if (eh.HandlerType == ExceptionHandlerType.Finally)
{
continue;
}
foreach (var prev in list_new_nodes.First()._graph.Predecessors(try_block))
{
Cfg.AddEdge(new CFG.Edge()
{
From = prev, To = eh_block
});
}
}
// Go through all CIL "leave" instructions and draw up edges. Any leave to end of
// endfinally block requires edge to finally block, not the following instruction.
foreach (var node in list_new_nodes)
{
int node_instruction_count = node.Instructions.Count;
INST leave_instruction = node.Instructions[node_instruction_count - 1];
Mono.Cecil.Cil.OpCode opcode = leave_instruction.OpCode;
Mono.Cecil.Cil.FlowControl flow_control = opcode.FlowControl;
if (!(leave_instruction.OpCode.Code == Code.Leave || leave_instruction.OpCode.Code == Code.Leave_S))
{
continue;
}
// Link up any leave instructions
object operand = leave_instruction.Operand;
Mono.Cecil.Cil.Instruction single_instruction = operand as Mono.Cecil.Cil.Instruction;
Mono.Cecil.Cil.Instruction[] array_of_instructions = operand as Mono.Cecil.Cil.Instruction[];
if (single_instruction == null)
{
throw new Exception("Malformed leave instruction.");
}
KeyValuePair <int, int> pair = inclusive_eh_range.Where(p => p.Key <= leave_instruction.Instruction.Offset &&
leave_instruction.Instruction.Offset <= p.Value).FirstOrDefault();
// pair indicates what try/catch/finally block. If not in a try/catch/finally,
// draw edge to destination. If the destination is outside try/catch/finally,
// draw edge to destination.
if (pair.Value == 0 || single_instruction.Offset >= pair.Key && single_instruction.Offset <= pair.Value)
{
var whereever = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == single_instruction.Offset)
{
return(true);
}
else
{
return(false);
}
}).First();
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = whereever
});
continue;
}
if (try_finally_block.ContainsKey(pair.Key))
{
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = try_finally_block[pair.Key]
});
}
else
{
var whereever = list_new_nodes.Where(
n =>
{
var first = n.Instructions.First().Instruction;
if (first.Offset == single_instruction.Offset)
{
return(true);
}
else
{
return(false);
}
}).First();
Cfg.AddEdge(new CFG.Edge()
{
From = node, To = whereever
});
}
}
if (Campy.Utils.Options.IsOn("detailed_import_computation_trace"))
{
Cfg.OutputDotGraph();
}
if (Campy.Utils.Options.IsOn("detailed_import_computation_trace"))
{
Cfg.OutputEntireGraph();
}
}
private void Inject()
{
body = Method.Body;
body.SimplifyMacros();
var ilProcessor = body.GetILProcessor();
var returnFixer = new ReturnFixer
{
Method = Method
};
returnFixer.MakeLastStatementReturn();
var methodBodyFirstInstruction = GetMethodBodyFirstInstruction();
var startInstructions = new List <Instruction>();
startInstructions.AddRange(GetStartInstructions());
foreach (var instruction in startInstructions)
{
ilProcessor.InsertBefore(methodBodyFirstInstruction, instruction);
}
var paramInstructions = GetParamInstructions();
paramInstructions.Reverse();
if (paramInstructions.Any())
{
foreach (var instruction in paramInstructions)
{
ilProcessor.InsertAfter(startInstructions.Last(), instruction);
}
}
ilProcessor.InsertBefore(returnFixer.NopBeforeReturn, GetReturnValueInstructions(returnFixer.ReturnVariable));
var tryCatchLeaveInstructions = Instruction.Create(OpCodes.Leave, returnFixer.NopBeforeReturn);
var catchInstructions = new List <Instruction>();
catchInstructions.AddRange(GetCatchInstructions());
ilProcessor.InsertBefore(returnFixer.NopBeforeReturn, tryCatchLeaveInstructions);
ilProcessor.InsertBefore(returnFixer.NopBeforeReturn, catchInstructions);
var endInstructions = new List <Instruction>();
endInstructions.AddRange(GetEndInstructions());
var isMethodLogExecEndAttributeExist = Method.CustomAttributes.ContainsAttribute("Yagasoft.Libraries.Common.LogExecEndAttribute");
if (isMethodLogExecEndAttributeExist)
{
LogInfo($">> Method is set to end execution.");
endInstructions.AddRange(GetExecEndInstructions());
}
var finallyInstruction = Instruction.Create(OpCodes.Endfinally);
endInstructions.Add(finallyInstruction);
endInstructions.Reverse();
foreach (var instruction in endInstructions)
{
ilProcessor.InsertAfter(catchInstructions.Last(), instruction);
}
var handler = new ExceptionHandler(ExceptionHandlerType.Catch)
{
CatchType = ExceptionType,
TryStart = methodBodyFirstInstruction,
TryEnd = tryCatchLeaveInstructions.Next,
HandlerStart = catchInstructions.First(),
HandlerEnd = catchInstructions.Last().Next
};
body.ExceptionHandlers.Add(handler);
handler = new ExceptionHandler(ExceptionHandlerType.Finally)
{
TryStart = methodBodyFirstInstruction,
TryEnd = catchInstructions.Last().Next,
HandlerStart = catchInstructions.Last().Next,
HandlerEnd = finallyInstruction.Next
};
body.ExceptionHandlers.Add(handler);
var instructions = body.Instructions;
Instruction doubleDupInstruction = null;
for (var index = 0; index < instructions.Count; index++)
{
var instruction = instructions[index];
if (instruction.OpCode == OpCodes.Dup && instructions[index + 1].OpCode == OpCodes.Dup)
{
doubleDupInstruction = instructions[index + 1];
}
if (instruction.OpCode == OpCodes.Pop && doubleDupInstruction != null)
{
var extraPopInstruction = instructions[index];
ilProcessor.Remove(extraPopInstruction);
ilProcessor.InsertAfter(doubleDupInstruction, extraPopInstruction);
doubleDupInstruction = null;
}
}
body.InitLocals = true;
body.OptimizeMacros();
}
private bool GenerateCalls(TypeReference producerRef, TypeReference jobStructType, MethodBody body, ILProcessor processor, HashSet <string> declaredGenerics)
{
try
{
var carrierType = producerRef.CheckedResolve();
MethodDefinition methodToCall = null;
while (carrierType != null)
{
methodToCall = carrierType.GetMethods().FirstOrDefault((x) => x.Name == "EarlyJobInit" && x.Parameters.Count == 0 && x.IsStatic && x.IsPublic);
if (methodToCall != null)
{
break;
}
carrierType = carrierType.DeclaringType;
}
// Legacy jobs lazy initialize.
if (methodToCall == null)
{
return(false);
}
// We need a separate solution for generic jobs
if (jobStructType.HasGenericParameters)
{
if (!declaredGenerics.Contains(jobStructType.FullName))
{
AddDiagnostic(UserError.DC3002(jobStructType));
}
return(false);
}
var asm = AssemblyDefinition.MainModule;
var errorHandler = asm.ImportReference((asm.ImportReference(typeof(EarlyInitHelpers)).Resolve().Methods.First(x => x.Name == nameof(EarlyInitHelpers.JobReflectionDataCreationFailed))));
var typeType = asm.ImportReference(typeof(Type)).CheckedResolve();
var getTypeFromHandle = asm.ImportReference(typeType.Methods.FirstOrDefault((x) => x.Name == "GetTypeFromHandle"));
var mref = asm.ImportReference(asm.ImportReference(methodToCall).MakeGenericInstanceMethod(jobStructType));
var callInsn = Instruction.Create(OpCodes.Call, mref);
var handler = Instruction.Create(OpCodes.Nop);
var landingPad = Instruction.Create(OpCodes.Nop);
processor.Append(callInsn);
processor.Append(handler);
// This craziness is equivalent to typeof(n)
processor.Append(Instruction.Create(OpCodes.Ldtoken, jobStructType));
processor.Append(Instruction.Create(OpCodes.Call, getTypeFromHandle));
processor.Append(Instruction.Create(OpCodes.Call, errorHandler));
processor.Append(landingPad);
var leaveSuccess = Instruction.Create(OpCodes.Leave, landingPad);
var leaveFail = Instruction.Create(OpCodes.Leave, landingPad);
processor.InsertAfter(callInsn, leaveSuccess);
processor.InsertBefore(landingPad, leaveFail);
var exc = new ExceptionHandler(ExceptionHandlerType.Catch);
exc.TryStart = callInsn;
exc.TryEnd = leaveSuccess.Next;
exc.HandlerStart = handler;
exc.HandlerEnd = leaveFail.Next;
exc.CatchType = asm.ImportReference(typeof(Exception));
body.ExceptionHandlers.Add(exc);
return(true);
}
catch (Exception ex)
{
AddDiagnostic(InternalCompilerError.DCICE300(producerRef, jobStructType, ex));
}
return(false);
}
/// <summary>
/// Emits the IL that calculates a hash code from a given service type.
/// </summary>
/// <param name="module">The module that holds the target type.</param>
/// <param name="body">The body of the GetServiceHashCode method.</param>
/// <param name="il">The <see cref="ILProcessor"/> that will be used to emit the instructions.</param>
/// <param name="getHashCodeMethod">The <see cref="Object.GetHashCode"/> method.</param>
/// <returns>The variable that holds the hash code.</returns>
private static VariableDefinition EmitGetServiceTypeHashCode(ModuleDefinition module, Mono.Cecil.Cil.MethodBody body, ILProcessor il, MethodReference getHashCodeMethod)
{
// Get the hash code for the service type
var hashVariable = AddLocals(module, body);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Callvirt, getHashCodeMethod);
il.Emit(OpCodes.Stloc, hashVariable);
return(hashVariable);
}
private void PatchAssembly(Action <byte[]> callback)
{
if (isPatching)
{
Interface.Oxide.LogWarning("Already patching plugin assembly: {0} (ignoring)", PluginNames.ToSentence());
RemoteLogger.Warning($"Already patching plugin assembly: {PluginNames.ToSentence()}");
return;
}
var startedAt = Interface.Oxide.Now;
isPatching = true;
ThreadPool.QueueUserWorkItem(_ =>
{
try
{
AssemblyDefinition definition;
using (var stream = new MemoryStream(RawAssembly))
definition = AssemblyDefinition.ReadAssembly(stream);
var exceptionConstructor = typeof(UnauthorizedAccessException).GetConstructor(new[] { typeof(string) });
var securityException = definition.MainModule.Import(exceptionConstructor);
Action <TypeDefinition> patchModuleType = null;
patchModuleType = type =>
{
foreach (var method in type.Methods)
{
var changedMethod = false;
if (method.Body == null)
{
if (method.HasPInvokeInfo)
{
method.Attributes &= ~MethodAttributes.PInvokeImpl;
var body = new MethodBody(method);
body.Instructions.Add(Instruction.Create(OpCodes.Ldstr, "PInvoke access is restricted, you are not allowed to use PInvoke"));
body.Instructions.Add(Instruction.Create(OpCodes.Newobj, securityException));
body.Instructions.Add(Instruction.Create(OpCodes.Throw));
method.Body = body;
}
}
else
{
var replacedMethod = false;
foreach (var variable in method.Body.Variables)
{
if (!IsNamespaceBlacklisted(variable.VariableType.FullName))
{
continue;
}
var body = new MethodBody(method);
body.Instructions.Add(Instruction.Create(OpCodes.Ldstr, $"System access is restricted, you are not allowed to use {variable.VariableType.FullName}"));
body.Instructions.Add(Instruction.Create(OpCodes.Newobj, securityException));
body.Instructions.Add(Instruction.Create(OpCodes.Throw));
method.Body = body;
replacedMethod = true;
break;
}
if (replacedMethod)
{
continue;
}
var instructions = method.Body.Instructions;
var ilProcessor = method.Body.GetILProcessor();
var first = instructions.First();
var i = 0;
while (i < instructions.Count)
{
if (changedMethod)
{
break;
}
var instruction = instructions[i];
if (instruction.OpCode == OpCodes.Ldtoken)
{
var operand = instruction.Operand as IMetadataTokenProvider;
var token = operand?.ToString();
if (IsNamespaceBlacklisted(token))
{
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Ldstr, $"System access is restricted, you are not allowed to use {token}"));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Newobj, securityException));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Throw));
changedMethod = true;
}
}
else if (instruction.OpCode == OpCodes.Call || instruction.OpCode == OpCodes.Calli || instruction.OpCode == OpCodes.Callvirt)
{
var methodCall = instruction.Operand as MethodReference;
var fullNamespace = methodCall?.DeclaringType.FullName;
if ((fullNamespace == "System.Type" && methodCall.Name == "GetType") || IsNamespaceBlacklisted(fullNamespace))
{
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Ldstr, $"System access is restricted, you are not allowed to use {fullNamespace}"));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Newobj, securityException));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Throw));
changedMethod = true;
}
}
else if (instruction.OpCode == OpCodes.Ldfld)
{
var fieldType = instruction.Operand as FieldReference;
var fullNamespace = fieldType?.FieldType.FullName;
if (IsNamespaceBlacklisted(fullNamespace))
{
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Ldstr, $"System access is restricted, you are not allowed to use {fullNamespace}"));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Newobj, securityException));
ilProcessor.InsertBefore(first, Instruction.Create(OpCodes.Throw));
changedMethod = true;
}
}
i++;
}
}
if (changedMethod)
{
method.Body?.OptimizeMacros();
/*//Interface.Oxide.LogDebug("Updating {0} instruction offsets: {1}", instructions.Count, method.FullName);
* int curoffset = 0;
* for (var i = 0; i < instructions.Count; i++)
* {
* var instruction = instructions[i];
* instruction.Previous = (i == 0) ? null : instructions[i - 1];
* instruction.Next = (i == instructions.Count - 1) ? null : instructions[i + 1];
* instruction.Offset = curoffset;
* curoffset += instruction.GetSize();
* //Interface.Oxide.LogDebug(" {0}", instruction.ToString());
* }*/
}
}
foreach (var nestedType in type.NestedTypes)
{
patchModuleType(nestedType);
}
};
foreach (var type in definition.MainModule.Types)
{
patchModuleType(type);
if (type.Namespace == "Oxide.Plugins")
{
if (PluginNames.Contains(type.Name))
{
var constructor = type.Methods.FirstOrDefault(m => !m.IsStatic && m.IsConstructor && !m.HasParameters && !m.IsPublic);
if (constructor != null)
{
var plugin = CompilablePlugins.SingleOrDefault(p => p.Name == type.Name);
if (plugin != null)
{
plugin.CompilerErrors = "Primary constructor in main class must be public";
}
}
else
{
new DirectCallMethod(definition.MainModule, type);
}
}
else
{
Interface.Oxide.LogWarning(
$"A plugin has polluted the global namespace by defining {type.Name}: {PluginNames.ToSentence()}");
RemoteLogger.Info(
$"A plugin has polluted the global namespace by defining {type.Name}: {PluginNames.ToSentence()}");
}
}
}
// TODO: Why is there no error on boot using this?
foreach (var type in definition.MainModule.Types)
{
if (type.Namespace != "Oxide.Plugins" || !PluginNames.Contains(type.Name))
{
continue;
}
foreach (var m in type.Methods.Where(m => !m.IsStatic && !m.HasGenericParameters && !m.ReturnType.IsGenericParameter && !m.IsSetter && !m.IsGetter))
{
foreach (var parameter in m.Parameters)
{
foreach (var attribute in parameter.CustomAttributes)
{
//Interface.Oxide.LogInfo($"{m.FullName} - {parameter.Name} - {attribute.Constructor.FullName}");
}
}
}
}
using (var stream = new MemoryStream())
{
definition.Write(stream);
PatchedAssembly = stream.ToArray();
}
Interface.Oxide.NextTick(() =>
{
isPatching = false;
//Interface.Oxide.LogDebug("Patching {0} assembly took {1:0.00} ms", ScriptName, Interface.Oxide.Now - startedAt);
callback(PatchedAssembly);
});
}
catch (Exception ex)
{
Interface.Oxide.NextTick(() =>
{
isPatching = false;
Interface.Oxide.LogException($"Exception while patching: {PluginNames.ToSentence()}", ex);
RemoteLogger.Exception($"Exception while patching: {PluginNames.ToSentence()}", ex);
callback(null);
});
}
});
}
internal static MethodBody Clone(MethodBody body, MethodDefinition parent, ImportContext context)
{
MethodBody nb = new MethodBody(parent);
nb.MaxStack = body.MaxStack;
nb.InitLocals = body.InitLocals;
nb.CodeSize = body.CodeSize;
foreach (VariableDefinition var in body.Variables)
{
nb.Variables.Add(new VariableDefinition(
context.Import(var.VariableType)));
}
foreach (Instruction instr in body.Instructions)
{
Instruction ni = new Instruction(instr.OpCode);
switch (instr.OpCode.OperandType)
{
case OperandType.InlineParam:
case OperandType.ShortInlineParam:
int param = body.Method.Parameters.IndexOf((ParameterDefinition)instr.Operand);
ni.Operand = parent.Parameters [param];
break;
case OperandType.InlineVar:
case OperandType.ShortInlineVar:
int var = body.Variables.IndexOf((VariableDefinition)instr.Operand);
ni.Operand = nb.Variables [var];
break;
case OperandType.InlineField:
ni.Operand = context.Import((FieldReference)instr.Operand);
break;
case OperandType.InlineMethod:
ni.Operand = context.Import((MethodReference)instr.Operand);
break;
case OperandType.InlineType:
ni.Operand = context.Import((TypeReference)instr.Operand);
break;
case OperandType.InlineTok:
if (instr.Operand is TypeReference)
{
ni.Operand = context.Import((TypeReference)instr.Operand);
}
else if (instr.Operand is FieldReference)
{
ni.Operand = context.Import((FieldReference)instr.Operand);
}
else if (instr.Operand is MethodReference)
{
ni.Operand = context.Import((MethodReference)instr.Operand);
}
break;
case OperandType.ShortInlineBrTarget:
case OperandType.InlineBrTarget:
break;
default:
ni.Operand = instr.Operand;
break;
}
nb.Instructions.Add(ni);
}
for (int i = 0; i < body.Instructions.Count; i++)
{
Instruction instr = nb.Instructions [i];
if (instr.OpCode.OperandType != OperandType.ShortInlineBrTarget &&
instr.OpCode.OperandType != OperandType.InlineBrTarget)
{
continue;
}
instr.Operand = GetInstruction(body, nb, (Instruction)body.Instructions [i].Operand);
}
foreach (ExceptionHandler eh in body.ExceptionHandlers)
{
ExceptionHandler neh = new ExceptionHandler(eh.Type);
neh.TryStart = GetInstruction(body, nb, eh.TryStart);
neh.TryEnd = GetInstruction(body, nb, eh.TryEnd);
neh.HandlerStart = GetInstruction(body, nb, eh.HandlerStart);
neh.HandlerEnd = GetInstruction(body, nb, eh.HandlerEnd);
switch (eh.Type)
{
case ExceptionHandlerType.Catch:
neh.CatchType = context.Import(eh.CatchType);
break;
case ExceptionHandlerType.Filter:
neh.FilterStart = GetInstruction(body, nb, eh.FilterStart);
neh.FilterEnd = GetInstruction(body, nb, eh.FilterEnd);
break;
}
nb.ExceptionHandlers.Add(neh);
}
return(nb);
}
static bool IsEmptyMethodBody(MethodBody body)
{
return(body.instructions.IsNullOrEmpty() &&
body.variables.IsNullOrEmpty());
}
private void _CopyMethodToDefinition()
{
MethodBase method = Method;
Module moduleFrom = method.Module;
System.Reflection.MethodBody bodyFrom = method.GetMethodBody();
byte[] data = bodyFrom?.GetILAsByteArray();
if (data == null)
{
throw new NotSupportedException("Body-less method");
}
MethodDefinition def = Definition;
ModuleDefinition moduleTo = def.Module;
Mono.Cecil.Cil.MethodBody bodyTo = def.Body;
ILProcessor processor = bodyTo.GetILProcessor();
Type[] typeArguments = null;
if (method.DeclaringType.IsGenericType)
{
typeArguments = method.DeclaringType.GetGenericArguments();
}
Type[] methodArguments = null;
if (method.IsGenericMethod)
{
methodArguments = method.GetGenericArguments();
}
foreach (LocalVariableInfo info in bodyFrom.LocalVariables)
{
TypeReference type = moduleTo.ImportReference(info.LocalType);
if (info.IsPinned)
{
type = new PinnedType(type);
}
bodyTo.Variables.Add(new VariableDefinition(type));
}
using (BinaryReader reader = new BinaryReader(new MemoryStream(data))) {
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
int offset = (int)reader.BaseStream.Position;
Instruction instr = Instruction.Create(OpCodes.Nop);
byte op = reader.ReadByte();
instr.OpCode = op != 0xfe ? _CecilOpCodes1X[op] : _CecilOpCodes2X[reader.ReadByte()];
instr.Offset = offset;
ReadOperand(reader, instr);
bodyTo.Instructions.Add(instr);
}
}
foreach (Instruction instr in bodyTo.Instructions)
{
switch (instr.OpCode.OperandType)
{
case OperandType.ShortInlineBrTarget:
case OperandType.InlineBrTarget:
instr.Operand = GetInstruction((int)instr.Operand, false);
break;
case OperandType.InlineSwitch:
int[] offsets = (int[])instr.Operand;
Instruction[] targets = new Instruction[offsets.Length];
for (int i = 0; i < offsets.Length; i++)
{
targets[i] = GetInstruction(offsets[i], false);
}
instr.Operand = targets;
break;
}
}
foreach (ExceptionHandlingClause clause in bodyFrom.ExceptionHandlingClauses)
{
ExceptionHandler handler = new ExceptionHandler((ExceptionHandlerType)clause.Flags);
bodyTo.ExceptionHandlers.Add(handler);
handler.TryStart = GetInstruction(clause.TryOffset, false);
handler.TryEnd = GetInstruction(handler.TryStart.Offset + clause.TryLength - 1, false);
handler.HandlerStart = GetInstruction(clause.HandlerOffset, false);
handler.FilterStart = GetInstruction(clause.FilterOffset, false);
handler.HandlerEnd = GetInstruction((handler.FilterStart ?? handler.HandlerStart).Offset + clause.HandlerLength + 1, true);
handler.CatchType = clause.CatchType == null ? null : moduleTo.ImportReference(clause.CatchType);
}
void ReadOperand(BinaryReader reader, Instruction instr)
{
int index, offs, length;
switch (instr.OpCode.OperandType)
{
case OperandType.InlineNone:
instr.Operand = null;
break;
case OperandType.InlineSwitch:
length = reader.ReadInt32();
offs = (int)reader.BaseStream.Position + (4 * length);
int[] targets = new int[length];
for (int i = 0; i < length; i++)
{
targets[i] = reader.ReadInt32() + offs;
}
instr.Operand = targets;
break;
case OperandType.ShortInlineBrTarget:
offs = reader.ReadSByte();
instr.Operand = (int)reader.BaseStream.Position + offs;
break;
case OperandType.InlineBrTarget:
offs = reader.ReadInt32();
instr.Operand = (int)reader.BaseStream.Position + offs;
break;
case OperandType.ShortInlineI:
instr.Operand = instr.OpCode == OpCodes.Ldc_I4_S ? reader.ReadSByte() : (object)reader.ReadByte();
break;
case OperandType.InlineI:
instr.Operand = reader.ReadInt32();
break;
case OperandType.ShortInlineR:
instr.Operand = reader.ReadSingle();
break;
case OperandType.InlineR:
instr.Operand = reader.ReadDouble();
break;
case OperandType.InlineI8:
instr.Operand = reader.ReadInt64();
break;
case OperandType.InlineSig:
throw new NotSupportedException("Parsing CallSites at runtime currently not supported");
case OperandType.InlineString:
instr.Operand = moduleFrom.ResolveString(reader.ReadInt32());
break;
case OperandType.InlineTok:
switch (moduleFrom.ResolveMember(reader.ReadInt32(), typeArguments, methodArguments))
{
case Type i:
instr.Operand = moduleTo.ImportReference(i);
break;
case FieldInfo i:
instr.Operand = moduleTo.ImportReference(i);
break;
case MethodBase i:
instr.Operand = moduleTo.ImportReference(i);
break;
}
break;
case OperandType.InlineType:
instr.Operand = moduleTo.ImportReference(moduleFrom.ResolveType(reader.ReadInt32(), typeArguments, methodArguments));
break;
case OperandType.InlineMethod:
instr.Operand = moduleTo.ImportReference(moduleFrom.ResolveMethod(reader.ReadInt32(), typeArguments, methodArguments));
break;
case OperandType.InlineField:
instr.Operand = moduleTo.ImportReference(moduleFrom.ResolveField(reader.ReadInt32(), typeArguments, methodArguments));
break;
case OperandType.ShortInlineVar:
case OperandType.InlineVar:
index = instr.OpCode.OperandType == OperandType.ShortInlineVar ? reader.ReadByte() : reader.ReadInt16();
instr.Operand = bodyTo.Variables[index];
break;
case OperandType.InlineArg:
case OperandType.ShortInlineArg:
index = instr.OpCode.OperandType == OperandType.ShortInlineArg ? reader.ReadByte() : reader.ReadInt16();
instr.Operand = def.Parameters[index];
break;
case OperandType.InlinePhi: // No opcode seems to use this
default:
throw new NotSupportedException($"Unsupported opcode ${instr.OpCode.Name}");
}
}
Instruction GetInstruction(int offset, bool isEnd)
{
int last = bodyTo.Instructions.Count - 1;
if (offset < 0 || offset > bodyTo.Instructions[last].Offset)
{
return(null);
}
int min = 0;
int max = last;
while (min <= max)
{
int mid = min + ((max - min) / 2);
Instruction instr = bodyTo.Instructions[mid];
if (isEnd)
{
if (offset == instr.Offset + instr.GetSize() - 1)
{
return(instr);
}
}
else
{
if (offset == instr.Offset)
{
return(instr);
}
}
if (offset < instr.Offset)
{
max = mid - 1;
}
else
{
min = mid + 1;
}
}
return(null);
}
}
private List <Instruction> CreateInstructionsToInject(ModuleDefinition moduleDefinition, MethodBody body)
{
var mRef2 = moduleDefinition.ImportReference(typeof(Console).GetMethod("WriteLine", BindingFlags.Public | BindingFlags.Static, null, new Type[]
{
typeof(string), typeof(object)
}, null));
var instructions = new List <Instruction>();
//build up call
instructions.Add(Instruction.Create(OpCodes.Ldstr, "Hello {0}!"));
instructions.Add(Instruction.Create(OpCodes.Ldstr, "Joe"));
instructions.Add(Instruction.Create(OpCodes.Call, mRef2));
instructions.Add(Instruction.Create(OpCodes.Nop));
//instructions.Add(Instruction.Create(OpCodes.Ldstr, "Hello {0}!"));
//instructions.Add(Instruction.Create(OpCodes.Ldstr, "Jim"));
//instructions.Add(Instruction.Create(OpCodes.Call, mRef2));
//instructions.Add(Instruction.Create(OpCodes.Ldstr, "Bye {0}!"));
//instructions.Add(Instruction.Create(OpCodes.Ldstr, "Jim"));
//instructions.Add(Instruction.Create(OpCodes.Call, mRef2));
return(instructions);
}
public static MethodReference Import(MethodBody body, MethodReference newMeth) => body.Method.DeclaringType.Module.ImportReference(newMeth);
public Branch(MethodBody body, OpCode branch)
{
this.Body = body;
this.Instruction = Instruction.Create(branch, Instruction.Create(OpCodes.Nop));
}
private void PatchAssembly(int version, Action callback)
{
if (isPatching)
{
Interface.GetMod().LogInfo("Already patching plugin assembly: {0} (ignoring)", ScriptName);
return;
}
if (version == LastGoodVersion)
{
//Interface.GetMod().LogInfo("Plugin assembly has already been patched: {0}", Name);
callback();
return;
}
var path = string.Format("{0}\\{1}_{2}.dll", Interface.GetMod().TempDirectory, Name, version);
//Interface.GetMod().LogInfo("Patching plugin assembly: {0}", Name);
isPatching = true;
ThreadPool.QueueUserWorkItem((_) =>
{
try
{
var definition = AssemblyDefinition.ReadAssembly(path);
var exception_constructor = typeof(UnauthorizedAccessException).GetConstructor(new Type[] { typeof(string) });
var security_exception = definition.MainModule.Import(exception_constructor);
Action <TypeDefinition> patch_module_type = null;
patch_module_type = (type) =>
{
foreach (var method in type.Methods)
{
Collection <Instruction> instructions = null;
var changed_method = false;
if (method.Body == null)
{
if (method.HasPInvokeInfo)
{
method.Attributes &= ~Mono.Cecil.MethodAttributes.PInvokeImpl;
var body = new Mono.Cecil.Cil.MethodBody(method);
body.Instructions.Add(Instruction.Create(OpCodes.Ldstr, "PInvoke access is restricted, you are not allowed to use PInvoke"));
body.Instructions.Add(Instruction.Create(OpCodes.Newobj, security_exception));
body.Instructions.Add(Instruction.Create(OpCodes.Throw));
method.Body = body;
}
}
else
{
var replaced_method = false;
foreach (var variable in method.Body.Variables)
{
foreach (var namespace_name in blacklistedNamespaces)
{
if (variable.VariableType.FullName.StartsWith(namespace_name))
{
if (whitelistedNamespaces.Any(name => variable.VariableType.FullName.StartsWith(name)))
{
continue;
}
var body = new Mono.Cecil.Cil.MethodBody(method);
body.Instructions.Add(Instruction.Create(OpCodes.Ldstr, "System access is restricted, you are not allowed to use " + variable.VariableType.FullName));
body.Instructions.Add(Instruction.Create(OpCodes.Newobj, security_exception));
body.Instructions.Add(Instruction.Create(OpCodes.Throw));
method.Body = body;
replaced_method = true;
break;
}
}
if (replaced_method)
{
break;
}
}
if (replaced_method)
{
continue;
}
instructions = method.Body.Instructions;
var i = 0;
while (i < instructions.Count)
{
var instruction = instructions[i];
if (instruction.OpCode == OpCodes.Ldtoken)
{
var operand = instruction.Operand as IMetadataTokenProvider;
var token = operand.ToString();
foreach (var namespace_name in blacklistedNamespaces)
{
if (token.StartsWith(namespace_name))
{
if (whitelistedNamespaces.Any(name => token.StartsWith(name)))
{
continue;
}
instructions[i++] = Instruction.Create(OpCodes.Ldstr, "System access is restricted, you are not allowed to use " + token);
instructions.Insert(i++, Instruction.Create(OpCodes.Newobj, security_exception));
instructions.Insert(i, Instruction.Create(OpCodes.Throw));
changed_method = true;
}
}
}
else if (instruction.OpCode == OpCodes.Call)
{
var method_call = instruction.Operand as MethodReference;
var full_namespace = method_call.DeclaringType.FullName;
foreach (var namespace_name in blacklistedNamespaces)
{
if (full_namespace.StartsWith(namespace_name))
{
if (whitelistedNamespaces.Any(name => full_namespace.StartsWith(name)))
{
continue;
}
for (var n = 0; n < method.Parameters.Count; n++)
{
instructions.Insert(i++, Instruction.Create(OpCodes.Pop));
}
instructions[i++] = Instruction.Create(OpCodes.Ldstr, "System access is restricted, you are not allowed to use " + full_namespace);
instructions.Insert(i++, Instruction.Create(OpCodes.Newobj, security_exception));
instructions.Insert(i, Instruction.Create(OpCodes.Throw));
changed_method = true;
}
}
}
i++;
}
}
if (changed_method)
{
//Interface.GetMod().LogInfo("Updating {0} instruction offsets: {1}", instructions.Count, method.FullName);
int curoffset = 0;
for (var i = 0; i < instructions.Count; i++)
{
var instruction = instructions[i];
instruction.Previous = (i == 0) ? null : instructions[i - 1];
instruction.Next = (i == instructions.Count - 1) ? null : instructions[i + 1];
instruction.Offset = curoffset;
curoffset += instruction.GetSize();
//Interface.GetMod().LogInfo(" {0}", instruction.ToString());
}
}
}
foreach (var nested_type in type.NestedTypes)
{
patch_module_type(nested_type);
}
};
foreach (var type in definition.MainModule.Types)
{
patch_module_type(type);
}
definition.Write(path);
Interface.GetMod().NextTick(() =>
{
isPatching = false;
callback();
});
}
catch (Exception ex)
{
isPatching = false;
Interface.GetMod().NextTick(() => Interface.GetMod().LogInfo("Exception while patching {0} assembly: {1}", ScriptName, ex.ToString()));
}
});
}
public override void VisitMethodBody(MethodBody body)
{
m_codeWriter.Empty();
}
private void ReplaceReturnWithLeaveInstructions(
Mono.Cecil.Cil.MethodBody methodBody,
Instruction leaveInstructionOperand,
VariableDefinition returnVariable = null)
{
var ilProcessor = methodBody.GetILProcessor();
var instructions = methodBody.Instructions;
var exceptionHandlers = methodBody.ExceptionHandlers;
Instruction storeReturnVariableInstruction = null;
if (returnVariable != null)
{
storeReturnVariableInstruction = ilProcessor.Create(OpCodes.Stloc, returnVariable);
}
foreach (var instruction in instructions.ToList())
{
if (instruction.OpCode == OpCodes.Ret)
{
var leaveInstruction = ilProcessor.Create(OpCodes.Leave, leaveInstructionOperand);
ilProcessor.Replace(instruction, leaveInstruction);
if (returnVariable != null)
{
ilProcessor.InsertBefore(leaveInstruction, storeReturnVariableInstruction);
}
instructions
.ToList()
.ForEach(i =>
{
if (i.Operand is Instruction operandInstruction &&
operandInstruction.Equals(instruction))
{
i.Operand = leaveInstruction;
}
});
exceptionHandlers
.ToList()
.ForEach(eHandler =>
{
if (eHandler.TryStart.Equals(instruction))
{
eHandler.TryStart = storeReturnVariableInstruction ?? leaveInstruction;
}
if (eHandler.TryEnd.Equals(instruction))
{
eHandler.TryEnd = storeReturnVariableInstruction ?? leaveInstruction;
}
if (eHandler.HandlerStart.Equals(instruction))
{
eHandler.HandlerStart = storeReturnVariableInstruction ?? leaveInstruction;
}
if (eHandler.HandlerEnd.Equals(instruction))
{
eHandler.HandlerEnd = storeReturnVariableInstruction ?? leaveInstruction;
}
});
}
}
}
private static Instruction GetFirstConstructorInstruction(MethodBody body)
{
var constructorInstruction = body.Instructions.FirstOrDefault(a => a.OpCode == OpCodes.Call && (a.Operand as MethodReference)?.Name == ".ctor");
return(constructorInstruction);
}
internal ILProcessor(MethodBody body)
{
this.body = body;
this.instructions = body.Instructions;
}
private static bool AnalyzeMethodCalls(MethodDefinition methodDefinition, XElement entity, XElement newMethodNode)
{
XElement callsNode = null;
bool result = false;
Mono.Cecil.Cil.MethodBody body = methodDefinition.Body;
if (null != body)
{
// method calls
foreach (Instruction itemInstruction in body.Instructions)
{
if (itemInstruction.OpCode.Name.StartsWith("callvirt"))
{
Mono.Cecil.Cil.Instruction methodInstruction = itemInstruction as Mono.Cecil.Cil.Instruction;
Mono.Cecil.MethodReference methodReference = methodInstruction.Operand as Mono.Cecil.MethodReference;
string callName = GetCallNameFromAnalyzeMethodCalls(methodReference);
string typeName = GetNameFromNewObjMethodReference(methodReference);
string componentName = NetOfficeSupportTable.GetLibrary(typeName);
string[] testArray = typeName.Split(new string[] { "." }, StringSplitOptions.RemoveEmptyEntries);
if (testArray.Length >= 3 && testArray[2] == "Tools")
{
continue;
}
if ((typeName.StartsWith(_apiName)) && !typeName.Equals(_apiName + ".dll", StringComparison.InvariantCultureIgnoreCase) &&
CountOf(typeName, ".") > 1 && (!typeName.StartsWith("NetOffice.DeveloperToolbox")))
{
string[] supportByLibrary = _netOfficeSupportTable.GetTypeCallSupport(callName);
result = true;
if (null == callsNode)
{
callsNode = new XElement("Calls");
newMethodNode.Add(callsNode);
}
XElement newObject = new XElement("Entity",
new XElement("Parameters"),
new XAttribute("Type", typeName),
new XAttribute("Name", callName),
new XAttribute("Api", componentName));
callsNode.Add(newObject);
XElement supportByNode = new XElement("SupportByLibrary", new XAttribute("Api", componentName));
newObject.Add(supportByNode);
if (null != supportByLibrary)
{
supportByNode.Add(new XAttribute("Name", callName));
foreach (string item in supportByLibrary)
{
supportByNode.Add(new XElement("Version", item));
}
}
bool resultParameter = AnalyzeMethodCallParameters(itemInstruction, newObject);
}
}
}
}
return(result);
}
