/*
Copyright (C) 2011-2013 de4dot@gmail.com
This file is part of de4dot.
de4dot is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
de4dot is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with de4dot. If not, see .
*/
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using dnlib.DotNet;
using dnlib.DotNet.Emit;
using de4dot.code.renamer.asmmodules;
using de4dot.blocks;
namespace de4dot.code.renamer {
[Flags]
public enum RenamerFlags {
RenameNamespaces = 1,
RenameTypes = 2,
RenameProperties = 4,
RenameEvents = 8,
RenameFields = 0x10,
RenameMethods = 0x20,
RenameMethodArgs = 0x40,
RenameGenericParams = 0x80,
RestoreProperties = 0x100,
RestorePropertiesFromNames = 0x200,
RestoreEvents = 0x400,
RestoreEventsFromNames = 0x800,
DontCreateNewParamDefs = 0x1000,
DontRenameDelegateFields = 0x2000,
}
public class Renamer {
public RenamerFlags RenamerFlags { get; set; }
public bool RenameNamespaces {
get { return (RenamerFlags & RenamerFlags.RenameNamespaces) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameNamespaces;
else
RenamerFlags &= ~RenamerFlags.RenameNamespaces;
}
}
public bool RenameTypes {
get { return (RenamerFlags & RenamerFlags.RenameTypes) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameTypes;
else
RenamerFlags &= ~RenamerFlags.RenameTypes;
}
}
public bool RenameProperties {
get { return (RenamerFlags & RenamerFlags.RenameProperties) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameProperties;
else
RenamerFlags &= ~RenamerFlags.RenameProperties;
}
}
public bool RenameEvents {
get { return (RenamerFlags & RenamerFlags.RenameEvents) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameEvents;
else
RenamerFlags &= ~RenamerFlags.RenameEvents;
}
}
public bool RenameFields {
get { return (RenamerFlags & RenamerFlags.RenameFields) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameFields;
else
RenamerFlags &= ~RenamerFlags.RenameFields;
}
}
public bool RenameMethods {
get { return (RenamerFlags & RenamerFlags.RenameMethods) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameMethods;
else
RenamerFlags &= ~RenamerFlags.RenameMethods;
}
}
public bool RenameMethodArgs {
get { return (RenamerFlags & RenamerFlags.RenameMethodArgs) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameMethodArgs;
else
RenamerFlags &= ~RenamerFlags.RenameMethodArgs;
}
}
public bool RenameGenericParams {
get { return (RenamerFlags & RenamerFlags.RenameGenericParams) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RenameGenericParams;
else
RenamerFlags &= ~RenamerFlags.RenameGenericParams;
}
}
public bool RestoreProperties {
get { return (RenamerFlags & RenamerFlags.RestoreProperties) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RestoreProperties;
else
RenamerFlags &= ~RenamerFlags.RestoreProperties;
}
}
public bool RestorePropertiesFromNames {
get { return (RenamerFlags & RenamerFlags.RestorePropertiesFromNames) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RestorePropertiesFromNames;
else
RenamerFlags &= ~RenamerFlags.RestorePropertiesFromNames;
}
}
public bool RestoreEvents {
get { return (RenamerFlags & RenamerFlags.RestoreEvents) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RestoreEvents;
else
RenamerFlags &= ~RenamerFlags.RestoreEvents;
}
}
public bool RestoreEventsFromNames {
get { return (RenamerFlags & RenamerFlags.RestoreEventsFromNames) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.RestoreEventsFromNames;
else
RenamerFlags &= ~RenamerFlags.RestoreEventsFromNames;
}
}
public bool DontCreateNewParamDefs {
get { return (RenamerFlags & RenamerFlags.DontCreateNewParamDefs) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.DontCreateNewParamDefs;
else
RenamerFlags &= ~RenamerFlags.DontCreateNewParamDefs;
}
}
public bool DontRenameDelegateFields {
get { return (RenamerFlags & RenamerFlags.DontRenameDelegateFields) != 0; }
set {
if (value)
RenamerFlags |= RenamerFlags.DontRenameDelegateFields;
else
RenamerFlags &= ~RenamerFlags.DontRenameDelegateFields;
}
}
Modules modules;
MemberInfos memberInfos = new MemberInfos();
DerivedFrom isDelegateClass;
MergeStateHelper mergeStateHelper;
bool isVerbose;
static string[] delegateClasses = new string[] {
"System.Delegate",
"System.MulticastDelegate",
};
public Renamer(IDeobfuscatorContext deobfuscatorContext, IEnumerable files, RenamerFlags flags) {
RenamerFlags = flags;
modules = new Modules(deobfuscatorContext);
isDelegateClass = new DerivedFrom(delegateClasses);
mergeStateHelper = new MergeStateHelper(memberInfos);
foreach (var file in files)
modules.Add(new Module(file));
}
public void Rename() {
if (modules.Empty)
return;
isVerbose = !Logger.Instance.IgnoresEvent(LoggerEvent.Verbose);
Logger.n("Renaming all obfuscated symbols");
modules.Initialize();
RenameResourceKeys();
var groups = modules.InitializeVirtualMembers();
memberInfos.Initialize(modules);
RenameTypeDefs();
RenameTypeRefs();
modules.OnTypesRenamed();
RestorePropertiesAndEvents(groups);
PrepareRenameMemberDefs(groups);
RenameMemberDefs();
RenameMemberRefs();
RemoveUselessOverrides(groups);
RenameResources();
modules.CleanUp();
}
void RenameResourceKeys() {
foreach (var module in modules.TheModules) {
if (!module.ObfuscatedFile.RenameResourceKeys)
continue;
new ResourceKeysRenamer(module.ModuleDefMD, module.ObfuscatedFile.NameChecker).Rename();
}
}
void RemoveUselessOverrides(MethodNameGroups groups) {
foreach (var group in groups.GetAllGroups()) {
foreach (var method in group.Methods) {
if (!method.Owner.HasModule)
continue;
if (!method.IsPublic())
continue;
var overrides = method.MethodDef.Overrides;
for (int i = 0; i < overrides.Count; i++) {
var overrideMethod = overrides[i].MethodDeclaration;
if (method.MethodDef.Name != overrideMethod.Name)
continue;
if (isVerbose)
Logger.v("Removed useless override from method {0} ({1:X8}), override: {2:X8}",
Utils.RemoveNewlines(method.MethodDef),
method.MethodDef.MDToken.ToInt32(),
overrideMethod.MDToken.ToInt32());
overrides.RemoveAt(i);
i--;
}
}
}
}
void RenameTypeDefs() {
if (isVerbose)
Logger.v("Renaming obfuscated type definitions");
foreach (var module in modules.TheModules) {
if (module.ObfuscatedFile.RemoveNamespaceWithOneType)
RemoveOneClassNamespaces(module);
}
var state = new TypeRenamerState();
foreach (var type in modules.AllTypes)
state.AddTypeName(memberInfos.Type(type).oldName);
PrepareRenameTypes(modules.BaseTypes, state);
FixClsTypeNames();
RenameTypeDefs(modules.NonNestedTypes);
}
void RemoveOneClassNamespaces(Module module) {
var nsToTypes = new Dictionary>(StringComparer.Ordinal);
foreach (var typeDef in module.GetAllTypes()) {
List list;
var ns = typeDef.TypeDef.Namespace.String;
if (string.IsNullOrEmpty(ns))
continue;
if (module.ObfuscatedFile.NameChecker.IsValidNamespaceName(ns))
continue;
if (!nsToTypes.TryGetValue(ns, out list))
nsToTypes[ns] = list = new List();
list.Add(typeDef);
}
var sortedNamespaces = new List>(nsToTypes.Values);
sortedNamespaces.Sort((a, b) => {
return UTF8String.CompareTo(a[0].TypeDef.Namespace, b[0].TypeDef.Namespace);
});
foreach (var list in sortedNamespaces) {
const int maxClasses = 1;
if (list.Count != maxClasses)
continue;
if (isVerbose)
Logger.v("Removing namespace: {0}", Utils.RemoveNewlines(list[0].TypeDef.Namespace));
foreach (var type in list)
memberInfos.Type(type).newNamespace = "";
}
}
void RenameTypeDefs(IEnumerable typeDefs) {
Logger.Instance.Indent();
foreach (var typeDef in typeDefs) {
Rename(typeDef);
RenameTypeDefs(typeDef.NestedTypes);
}
Logger.Instance.DeIndent();
}
void Rename(MTypeDef type) {
var typeDef = type.TypeDef;
var info = memberInfos.Type(type);
if (isVerbose)
Logger.v("Type: {0} ({1:X8})", Utils.RemoveNewlines(typeDef.FullName), typeDef.MDToken.ToUInt32());
Logger.Instance.Indent();
renameGenericParams2(type.GenericParams);
if (RenameTypes && info.GotNewName()) {
var old = typeDef.Name;
typeDef.Name = info.newName;
if (isVerbose)
Logger.v("Name: {0} => {1}", Utils.RemoveNewlines(old), Utils.RemoveNewlines(typeDef.Name));
}
if (RenameNamespaces && info.newNamespace != null) {
var old = typeDef.Namespace;
typeDef.Namespace = info.newNamespace;
if (isVerbose)
Logger.v("Namespace: {0} => {1}", Utils.RemoveNewlines(old), Utils.RemoveNewlines(typeDef.Namespace));
}
Logger.Instance.DeIndent();
}
void renameGenericParams2(IEnumerable genericParams) {
if (!RenameGenericParams)
return;
foreach (var param in genericParams) {
var info = memberInfos.GenericParam(param);
if (!info.GotNewName())
continue;
param.GenericParam.Name = info.newName;
if (isVerbose)
Logger.v("GenParam: {0} => {1}", Utils.RemoveNewlines(info.oldFullName), Utils.RemoveNewlines(param.GenericParam.FullName));
}
}
void RenameMemberDefs() {
if (isVerbose)
Logger.v("Renaming member definitions #2");
var allTypes = new List(modules.AllTypes);
allTypes.Sort((a, b) => a.Index.CompareTo(b.Index));
Logger.Instance.Indent();
foreach (var typeDef in allTypes)
RenameMembers(typeDef);
Logger.Instance.DeIndent();
}
void RenameMembers(MTypeDef type) {
var info = memberInfos.Type(type);
if (isVerbose)
Logger.v("Type: {0}", Utils.RemoveNewlines(info.type.TypeDef.FullName));
Logger.Instance.Indent();
RenameFields2(info);
RenameProperties2(info);
RenameEvents2(info);
RenameMethods2(info);
Logger.Instance.DeIndent();
}
void RenameFields2(TypeInfo info) {
if (!RenameFields)
return;
bool isDelegateType = isDelegateClass.Check(info.type);
foreach (var fieldDef in info.type.AllFieldsSorted) {
var fieldInfo = memberInfos.Field(fieldDef);
if (!fieldInfo.GotNewName())
continue;
if (isDelegateType && DontRenameDelegateFields)
continue;
fieldDef.FieldDef.Name = fieldInfo.newName;
if (isVerbose)
Logger.v("Field: {0} ({1:X8}) => {2}",
Utils.RemoveNewlines(fieldInfo.oldFullName),
fieldDef.FieldDef.MDToken.ToUInt32(),
Utils.RemoveNewlines(fieldDef.FieldDef.FullName));
}
}
void RenameProperties2(TypeInfo info) {
if (!RenameProperties)
return;
foreach (var propDef in info.type.AllPropertiesSorted) {
var propInfo = memberInfos.Property(propDef);
if (!propInfo.GotNewName())
continue;
propDef.PropertyDef.Name = propInfo.newName;
if (isVerbose)
Logger.v("Property: {0} ({1:X8}) => {2}",
Utils.RemoveNewlines(propInfo.oldFullName),
propDef.PropertyDef.MDToken.ToUInt32(),
Utils.RemoveNewlines(propDef.PropertyDef.FullName));
}
}
void RenameEvents2(TypeInfo info) {
if (!RenameEvents)
return;
foreach (var eventDef in info.type.AllEventsSorted) {
var eventInfo = memberInfos.Event(eventDef);
if (!eventInfo.GotNewName())
continue;
eventDef.EventDef.Name = eventInfo.newName;
if (isVerbose)
Logger.v("Event: {0} ({1:X8}) => {2}",
Utils.RemoveNewlines(eventInfo.oldFullName),
eventDef.EventDef.MDToken.ToUInt32(),
Utils.RemoveNewlines(eventDef.EventDef.FullName));
}
}
void RenameMethods2(TypeInfo info) {
if (!RenameMethods && !RenameMethodArgs && !RenameGenericParams)
return;
foreach (var methodDef in info.type.AllMethodsSorted) {
var methodInfo = memberInfos.Method(methodDef);
if (isVerbose)
Logger.v("Method {0} ({1:X8})", Utils.RemoveNewlines(methodInfo.oldFullName), methodDef.MethodDef.MDToken.ToUInt32());
Logger.Instance.Indent();
renameGenericParams2(methodDef.GenericParams);
if (RenameMethods && methodInfo.GotNewName()) {
methodDef.MethodDef.Name = methodInfo.newName;
if (isVerbose)
Logger.v("Name: {0} => {1}", Utils.RemoveNewlines(methodInfo.oldFullName), Utils.RemoveNewlines(methodDef.MethodDef.FullName));
}
if (RenameMethodArgs) {
foreach (var param in methodDef.AllParamDefs) {
var paramInfo = memberInfos.Param(param);
if (!paramInfo.GotNewName())
continue;
if (!param.ParameterDef.HasParamDef) {
if (DontCreateNewParamDefs)
continue;
param.ParameterDef.CreateParamDef();
}
param.ParameterDef.Name = paramInfo.newName;
if (isVerbose) {
if (param.IsReturnParameter)
Logger.v("RetParam: {0} => {1}", Utils.RemoveNewlines(paramInfo.oldName), Utils.RemoveNewlines(paramInfo.newName));
else
Logger.v("Param ({0}/{1}): {2} => {3}", param.ParameterDef.MethodSigIndex + 1, methodDef.MethodDef.MethodSig.GetParamCount(), Utils.RemoveNewlines(paramInfo.oldName), Utils.RemoveNewlines(paramInfo.newName));
}
}
}
Logger.Instance.DeIndent();
}
}
void RenameMemberRefs() {
if (isVerbose)
Logger.v("Renaming references to other definitions");
foreach (var module in modules.TheModules) {
if (modules.TheModules.Count > 1 && isVerbose)
Logger.v("Renaming references to other definitions ({0})", module.Filename);
Logger.Instance.Indent();
foreach (var refToDef in module.MethodRefsToRename)
refToDef.reference.Name = refToDef.definition.Name;
foreach (var refToDef in module.FieldRefsToRename)
refToDef.reference.Name = refToDef.definition.Name;
foreach (var info in module.CustomAttributeFieldRefs)
info.cattr.NamedArguments[info.index].Name = info.reference.Name;
foreach (var info in module.CustomAttributePropertyRefs)
info.cattr.NamedArguments[info.index].Name = info.reference.Name;
Logger.Instance.DeIndent();
}
}
void RenameResources() {
if (isVerbose)
Logger.v("Renaming resources");
foreach (var module in modules.TheModules) {
if (modules.TheModules.Count > 1 && isVerbose)
Logger.v("Renaming resources ({0})", module.Filename);
Logger.Instance.Indent();
RenameResources(module);
Logger.Instance.DeIndent();
}
}
void RenameResources(Module module) {
var renamedTypes = new List();
foreach (var type in module.GetAllTypes()) {
var info = memberInfos.Type(type);
if (info.oldFullName != info.type.TypeDef.FullName)
renamedTypes.Add(info);
}
if (renamedTypes.Count == 0)
return;
new ResourceRenamer(module).Rename(renamedTypes);
}
// Make sure the renamed types are using valid CLS names. That means renaming all
// generic types from eg. Class1 to Class1`2. If we don't do this, some decompilers
// (eg. ILSpy v1.0) won't produce correct output.
void FixClsTypeNames() {
foreach (var type in modules.NonNestedTypes)
FixClsTypeNames(null, type);
}
void FixClsTypeNames(MTypeDef nesting, MTypeDef nested) {
int nestingCount = nesting == null ? 0 : nesting.GenericParams.Count;
int arity = nested.GenericParams.Count - nestingCount;
var nestedInfo = memberInfos.Type(nested);
if (nestedInfo.renamed && arity > 0)
nestedInfo.newName += "`" + arity;
foreach (var nestedType in nested.NestedTypes)
FixClsTypeNames(nested, nestedType);
}
void PrepareRenameTypes(IEnumerable types, TypeRenamerState state) {
foreach (var typeDef in types) {
memberInfos.Type(typeDef).PrepareRenameTypes(state);
PrepareRenameTypes(typeDef.derivedTypes, state);
}
}
void RenameTypeRefs() {
if (isVerbose)
Logger.v("Renaming references to type definitions");
var theModules = modules.TheModules;
foreach (var module in theModules) {
if (theModules.Count > 1 && isVerbose)
Logger.v("Renaming references to type definitions ({0})", module.Filename);
Logger.Instance.Indent();
foreach (var refToDef in module.TypeRefsToRename) {
refToDef.reference.Name = refToDef.definition.Name;
refToDef.reference.Namespace = refToDef.definition.Namespace;
}
Logger.Instance.DeIndent();
}
}
void RestorePropertiesAndEvents(MethodNameGroups groups) {
var allGroups = groups.GetAllGroups();
RestoreVirtualProperties(allGroups);
RestorePropertiesFromNames2(allGroups);
ResetVirtualPropertyNames(allGroups);
RestoreVirtualEvents(allGroups);
RestoreEventsFromNames2(allGroups);
ResetVirtualEventNames(allGroups);
}
void ResetVirtualPropertyNames(IEnumerable allGroups) {
if (!this.RenameProperties)
return;
foreach (var group in allGroups) {
MPropertyDef prop = null;
foreach (var method in group.Methods) {
if (method.Property == null)
continue;
if (method.Owner.HasModule)
continue;
prop = method.Property;
break;
}
if (prop == null)
continue;
foreach (var method in group.Methods) {
if (!method.Owner.HasModule)
continue;
if (method.Property == null)
continue;
memberInfos.Property(method.Property).Rename(prop.PropertyDef.Name.String);
}
}
}
void ResetVirtualEventNames(IEnumerable allGroups) {
if (!this.RenameEvents)
return;
foreach (var group in allGroups) {
MEventDef evt = null;
foreach (var method in group.Methods) {
if (method.Event == null)
continue;
if (method.Owner.HasModule)
continue;
evt = method.Event;
break;
}
if (evt == null)
continue;
foreach (var method in group.Methods) {
if (!method.Owner.HasModule)
continue;
if (method.Event == null)
continue;
memberInfos.Event(method.Event).Rename(evt.EventDef.Name.String);
}
}
}
void RestoreVirtualProperties(IEnumerable allGroups) {
if (!RestoreProperties)
return;
foreach (var group in allGroups) {
RestoreVirtualProperties(group);
RestoreExplicitVirtualProperties(group);
}
}
void RestoreExplicitVirtualProperties(MethodNameGroup group) {
if (group.Methods.Count != 1)
return;
var propMethod = group.Methods[0];
if (propMethod.Property != null)
return;
if (propMethod.MethodDef.Overrides.Count == 0)
return;
var theProperty = GetOverriddenProperty(propMethod);
if (theProperty == null)
return;
CreateProperty(theProperty, propMethod, GetOverridePrefix(group, propMethod));
}
void RestoreVirtualProperties(MethodNameGroup group) {
if (group.Methods.Count <= 1 || !group.HasProperty())
return;
MPropertyDef prop = null;
List missingProps = null;
foreach (var method in group.Methods) {
if (method.Property == null) {
if (missingProps == null)
missingProps = new List();
missingProps.Add(method);
}
else if (prop == null || !method.Owner.HasModule)
prop = method.Property;
}
if (prop == null)
return; // Should never happen
if (missingProps == null)
return;
foreach (var method in missingProps)
CreateProperty(prop, method, "");
}
void CreateProperty(MPropertyDef propDef, MMethodDef methodDef, string overridePrefix) {
if (!methodDef.Owner.HasModule)
return;
var newPropertyName = overridePrefix + propDef.PropertyDef.Name;
if (!DotNetUtils.HasReturnValue(methodDef.MethodDef))
CreatePropertySetter(newPropertyName, methodDef);
else
CreatePropertyGetter(newPropertyName, methodDef);
}
void RestorePropertiesFromNames2(IEnumerable allGroups) {
if (!RestorePropertiesFromNames)
return;
foreach (var group in allGroups) {
var groupMethod = group.Methods[0];
var methodName = groupMethod.MethodDef.Name.String;
bool onlyRenamableMethods = !group.HasNonRenamableMethod();
if (Utils.StartsWith(methodName, "get_", StringComparison.Ordinal)) {
var propName = methodName.Substring(4);
foreach (var method in group.Methods) {
if (onlyRenamableMethods && !memberInfos.Type(method.Owner).NameChecker.IsValidPropertyName(propName))
continue;
CreatePropertyGetter(propName, method);
}
}
else if (Utils.StartsWith(methodName, "set_", StringComparison.Ordinal)) {
var propName = methodName.Substring(4);
foreach (var method in group.Methods) {
if (onlyRenamableMethods && !memberInfos.Type(method.Owner).NameChecker.IsValidPropertyName(propName))
continue;
CreatePropertySetter(propName, method);
}
}
}
foreach (var type in modules.AllTypes) {
foreach (var method in type.AllMethodsSorted) {
if (method.IsVirtual())
continue; // Virtual methods are in allGroups, so already fixed above
if (method.Property != null)
continue;
var methodName = method.MethodDef.Name.String;
if (Utils.StartsWith(methodName, "get_", StringComparison.Ordinal))
CreatePropertyGetter(methodName.Substring(4), method);
else if (Utils.StartsWith(methodName, "set_", StringComparison.Ordinal))
CreatePropertySetter(methodName.Substring(4), method);
}
}
}
MPropertyDef CreatePropertyGetter(string name, MMethodDef propMethod) {
if (string.IsNullOrEmpty(name))
return null;
var ownerType = propMethod.Owner;
if (!ownerType.HasModule)
return null;
if (propMethod.Property != null)
return null;
var sig = propMethod.MethodDef.MethodSig;
if (sig == null)
return null;
var propType = sig.RetType;
var propDef = CreateProperty(ownerType, name, propType, propMethod.MethodDef, null);
if (propDef == null)
return null;
if (propDef.GetMethod != null)
return null;
if (isVerbose)
Logger.v("Restoring property getter {0} ({1:X8}), Property: {2} ({3:X8})",
Utils.RemoveNewlines(propMethod),
propMethod.MethodDef.MDToken.ToInt32(),
Utils.RemoveNewlines(propDef.PropertyDef),
propDef.PropertyDef.MDToken.ToInt32());
propDef.PropertyDef.GetMethod = propMethod.MethodDef;
propDef.GetMethod = propMethod;
propMethod.Property = propDef;
return propDef;
}
MPropertyDef CreatePropertySetter(string name, MMethodDef propMethod) {
if (string.IsNullOrEmpty(name))
return null;
var ownerType = propMethod.Owner;
if (!ownerType.HasModule)
return null;
if (propMethod.Property != null)
return null;
var sig = propMethod.MethodDef.MethodSig;
if (sig == null || sig.Params.Count == 0)
return null;
var propType = sig.Params[sig.Params.Count - 1];
var propDef = CreateProperty(ownerType, name, propType, null, propMethod.MethodDef);
if (propDef == null)
return null;
if (propDef.SetMethod != null)
return null;
if (isVerbose)
Logger.v("Restoring property setter {0} ({1:X8}), Property: {2} ({3:X8})",
Utils.RemoveNewlines(propMethod),
propMethod.MethodDef.MDToken.ToInt32(),
Utils.RemoveNewlines(propDef.PropertyDef),
propDef.PropertyDef.MDToken.ToInt32());
propDef.PropertyDef.SetMethod = propMethod.MethodDef;
propDef.SetMethod = propMethod;
propMethod.Property = propDef;
return propDef;
}
MPropertyDef CreateProperty(MTypeDef ownerType, string name, TypeSig propType, MethodDef getter, MethodDef setter) {
if (string.IsNullOrEmpty(name) || propType.ElementType == ElementType.Void)
return null;
var newSig = CreatePropertySig(getter, propType, true) ?? CreatePropertySig(setter, propType, false);
if (newSig == null)
return null;
var newProp = ownerType.Module.ModuleDefMD.UpdateRowId(new PropertyDefUser(name, newSig, 0));
newProp.GetMethod = getter;
newProp.SetMethod = setter;
var propDef = ownerType.FindAny(newProp);
if (propDef != null)
return propDef;
propDef = ownerType.Create(newProp);
memberInfos.Add(propDef);
if (isVerbose)
Logger.v("Restoring property: {0}", Utils.RemoveNewlines(newProp));
return propDef;
}
static PropertySig CreatePropertySig(MethodDef method, TypeSig propType, bool isGetter) {
if (method == null)
return null;
var sig = method.MethodSig;
if (sig == null)
return null;
var newSig = new PropertySig(sig.HasThis, propType);
newSig.GenParamCount = sig.GenParamCount;
int count = sig.Params.Count;
if (!isGetter)
count--;
for (int i = 0; i < count; i++)
newSig.Params.Add(sig.Params[i]);
return newSig;
}
void RestoreVirtualEvents(IEnumerable allGroups) {
if (!RestoreEvents)
return;
foreach (var group in allGroups) {
RestoreVirtualEvents(group);
RestoreExplicitVirtualEvents(group);
}
}
enum EventMethodType {
None,
Other,
Adder,
Remover,
Raiser,
}
void RestoreExplicitVirtualEvents(MethodNameGroup group) {
if (group.Methods.Count != 1)
return;
var eventMethod = group.Methods[0];
if (eventMethod.Event != null)
return;
if (eventMethod.MethodDef.Overrides.Count == 0)
return;
MMethodDef overriddenMethod;
var theEvent = GetOverriddenEvent(eventMethod, out overriddenMethod);
if (theEvent == null)
return;
CreateEvent(theEvent, eventMethod, GetEventMethodType(overriddenMethod), GetOverridePrefix(group, eventMethod));
}
void RestoreVirtualEvents(MethodNameGroup group) {
if (group.Methods.Count <= 1 || !group.HasEvent())
return;
EventMethodType methodType = EventMethodType.None;
MEventDef evt = null;
List missingEvents = null;
foreach (var method in group.Methods) {
if (method.Event == null) {
if (missingEvents == null)
missingEvents = new List();
missingEvents.Add(method);
}
else if (evt == null || !method.Owner.HasModule) {
evt = method.Event;
methodType = GetEventMethodType(method);
}
}
if (evt == null)
return; // Should never happen
if (missingEvents == null)
return;
foreach (var method in missingEvents)
CreateEvent(evt, method, methodType, "");
}
void CreateEvent(MEventDef eventDef, MMethodDef methodDef, EventMethodType methodType, string overridePrefix) {
if (!methodDef.Owner.HasModule)
return;
var newEventName = overridePrefix + eventDef.EventDef.Name;
switch (methodType) {
case EventMethodType.Adder:
CreateEventAdder(newEventName, methodDef);
break;
case EventMethodType.Remover:
CreateEventRemover(newEventName, methodDef);
break;
}
}
static EventMethodType GetEventMethodType(MMethodDef method) {
var evt = method.Event;
if (evt == null)
return EventMethodType.None;
if (evt.AddMethod == method)
return EventMethodType.Adder;
if (evt.RemoveMethod == method)
return EventMethodType.Remover;
if (evt.RaiseMethod == method)
return EventMethodType.Raiser;
return EventMethodType.Other;
}
void RestoreEventsFromNames2(IEnumerable allGroups) {
if (!RestoreEventsFromNames)
return;
foreach (var group in allGroups) {
var groupMethod = group.Methods[0];
var methodName = groupMethod.MethodDef.Name.String;
bool onlyRenamableMethods = !group.HasNonRenamableMethod();
if (Utils.StartsWith(methodName, "add_", StringComparison.Ordinal)) {
var eventName = methodName.Substring(4);
foreach (var method in group.Methods) {
if (onlyRenamableMethods && !memberInfos.Type(method.Owner).NameChecker.IsValidEventName(eventName))
continue;
CreateEventAdder(eventName, method);
}
}
else if (Utils.StartsWith(methodName, "remove_", StringComparison.Ordinal)) {
var eventName = methodName.Substring(7);
foreach (var method in group.Methods) {
if (onlyRenamableMethods && !memberInfos.Type(method.Owner).NameChecker.IsValidEventName(eventName))
continue;
CreateEventRemover(eventName, method);
}
}
}
foreach (var type in modules.AllTypes) {
foreach (var method in type.AllMethodsSorted) {
if (method.IsVirtual())
continue; // Virtual methods are in allGroups, so already fixed above
if (method.Event != null)
continue;
var methodName = method.MethodDef.Name.String;
if (Utils.StartsWith(methodName, "add_", StringComparison.Ordinal))
CreateEventAdder(methodName.Substring(4), method);
else if (Utils.StartsWith(methodName, "remove_", StringComparison.Ordinal))
CreateEventRemover(methodName.Substring(7), method);
}
}
}
MEventDef CreateEventAdder(string name, MMethodDef eventMethod) {
if (string.IsNullOrEmpty(name))
return null;
var ownerType = eventMethod.Owner;
if (!ownerType.HasModule)
return null;
if (eventMethod.Event != null)
return null;
var method = eventMethod.MethodDef;
var eventDef = CreateEvent(ownerType, name, GetEventType(method));
if (eventDef == null)
return null;
if (eventDef.AddMethod != null)
return null;
if (isVerbose)
Logger.v("Restoring event adder {0} ({1:X8}), Event: {2} ({3:X8})",
Utils.RemoveNewlines(eventMethod),
eventMethod.MethodDef.MDToken.ToInt32(),
Utils.RemoveNewlines(eventDef.EventDef),
eventDef.EventDef.MDToken.ToInt32());
eventDef.EventDef.AddMethod = eventMethod.MethodDef;
eventDef.AddMethod = eventMethod;
eventMethod.Event = eventDef;
return eventDef;
}
MEventDef CreateEventRemover(string name, MMethodDef eventMethod) {
if (string.IsNullOrEmpty(name))
return null;
var ownerType = eventMethod.Owner;
if (!ownerType.HasModule)
return null;
if (eventMethod.Event != null)
return null;
var method = eventMethod.MethodDef;
var eventDef = CreateEvent(ownerType, name, GetEventType(method));
if (eventDef == null)
return null;
if (eventDef.RemoveMethod != null)
return null;
if (isVerbose)
Logger.v("Restoring event remover {0} ({1:X8}), Event: {2} ({3:X8})",
Utils.RemoveNewlines(eventMethod),
eventMethod.MethodDef.MDToken.ToInt32(),
Utils.RemoveNewlines(eventDef.EventDef),
eventDef.EventDef.MDToken.ToInt32());
eventDef.EventDef.RemoveMethod = eventMethod.MethodDef;
eventDef.RemoveMethod = eventMethod;
eventMethod.Event = eventDef;
return eventDef;
}
TypeSig GetEventType(IMethod method) {
if (DotNetUtils.HasReturnValue(method))
return null;
var sig = method.MethodSig;
if (sig == null || sig.Params.Count != 1)
return null;
return sig.Params[0];
}
MEventDef CreateEvent(MTypeDef ownerType, string name, TypeSig eventType) {
if (string.IsNullOrEmpty(name) || eventType == null || eventType.ElementType == ElementType.Void)
return null;
var newEvent = ownerType.Module.ModuleDefMD.UpdateRowId(new EventDefUser(name, eventType.ToTypeDefOrRef(), 0));
var eventDef = ownerType.FindAny(newEvent);
if (eventDef != null)
return eventDef;
eventDef = ownerType.Create(newEvent);
memberInfos.Add(eventDef);
if (isVerbose)
Logger.v("Restoring event: {0}", Utils.RemoveNewlines(newEvent));
return eventDef;
}
void PrepareRenameMemberDefs(MethodNameGroups groups) {
if (isVerbose)
Logger.v("Renaming member definitions #1");
PrepareRenameEntryPoints();
var virtualMethods = new GroupHelper(memberInfos, modules.AllTypes);
var ifaceMethods = new GroupHelper(memberInfos, modules.AllTypes);
var propMethods = new GroupHelper(memberInfos, modules.AllTypes);
var eventMethods = new GroupHelper(memberInfos, modules.AllTypes);
foreach (var group in GetSorted(groups)) {
if (group.HasNonRenamableMethod())
continue;
else if (group.HasGetterOrSetterPropertyMethod() && GetPropertyMethodType(group.Methods[0]) != PropertyMethodType.Other)
propMethods.Add(group);
else if (group.HasAddRemoveOrRaiseEventMethod())
eventMethods.Add(group);
else if (group.HasInterfaceMethod())
ifaceMethods.Add(group);
else
virtualMethods.Add(group);
}
var prepareHelper = new PrepareHelper(memberInfos, modules.AllTypes);
prepareHelper.Prepare((info) => info.PrepareRenameMembers());
prepareHelper.Prepare((info) => info.PrepareRenamePropsAndEvents());
propMethods.VisitAll((group) => PrepareRenameProperty(group, false));
eventMethods.VisitAll((group) => PrepareRenameEvent(group, false));
propMethods.VisitAll((group) => PrepareRenameProperty(group, true));
eventMethods.VisitAll((group) => PrepareRenameEvent(group, true));
foreach (var typeDef in modules.AllTypes)
memberInfos.Type(typeDef).InitializeEventHandlerNames();
prepareHelper.Prepare((info) => info.PrepareRenameMethods());
ifaceMethods.VisitAll((group) => PrepareRenameVirtualMethods(group, "imethod_", false));
virtualMethods.VisitAll((group) => PrepareRenameVirtualMethods(group, "vmethod_", false));
ifaceMethods.VisitAll((group) => PrepareRenameVirtualMethods(group, "imethod_", true));
virtualMethods.VisitAll((group) => PrepareRenameVirtualMethods(group, "vmethod_", true));
RestoreMethodArgs(groups);
foreach (var typeDef in modules.AllTypes)
memberInfos.Type(typeDef).PrepareRenameMethods2();
}
void RestoreMethodArgs(MethodNameGroups groups) {
foreach (var group in groups.GetAllGroups()) {
if (group.Methods[0].VisibleParameterCount == 0)
continue;
var argNames = GetValidArgNames(group);
foreach (var method in group.Methods) {
if (!method.Owner.HasModule)
continue;
var nameChecker = method.Owner.Module.ObfuscatedFile.NameChecker;
for (int i = 0; i < argNames.Length; i++) {
var argName = argNames[i];
if (argName == null || !nameChecker.IsValidMethodArgName(argName))
continue;
var info = memberInfos.Param(method.ParamDefs[i]);
if (nameChecker.IsValidMethodArgName(info.oldName))
continue;
info.newName = argName;
}
}
}
}
string[] GetValidArgNames(MethodNameGroup group) {
var methods = new List(group.Methods);
foreach (var method in group.Methods) {
foreach (var ovrd in method.MethodDef.Overrides) {
var overrideRef = ovrd.MethodDeclaration;
var overrideDef = modules.ResolveMethod(overrideRef);
if (overrideDef == null) {
var typeDef = modules.ResolveType(overrideRef.DeclaringType) ?? modules.ResolveOther(overrideRef.DeclaringType);
if (typeDef == null)
continue;
overrideDef = typeDef.FindMethod(overrideRef);
if (overrideDef == null)
continue;
}
if (overrideDef.VisibleParameterCount != method.VisibleParameterCount)
continue;
methods.Add(overrideDef);
}
}
var argNames = new string[group.Methods[0].ParamDefs.Count];
foreach (var method in methods) {
var nameChecker = !method.Owner.HasModule ? null : method.Owner.Module.ObfuscatedFile.NameChecker;
for (int i = 0; i < argNames.Length; i++) {
var argName = method.ParamDefs[i].ParameterDef.Name;
if (nameChecker == null || nameChecker.IsValidMethodArgName(argName))
argNames[i] = argName;
}
}
return argNames;
}
class PrepareHelper {
Dictionary prepareMethodCalled = new Dictionary();
MemberInfos memberInfos;
Action func;
IEnumerable allTypes;
public PrepareHelper(MemberInfos memberInfos, IEnumerable allTypes) {
this.memberInfos = memberInfos;
this.allTypes = allTypes;
}
public void Prepare(Action func) {
this.func = func;
prepareMethodCalled.Clear();
foreach (var typeDef in allTypes)
Prepare(typeDef);
}
void Prepare(MTypeDef type) {
if (prepareMethodCalled.ContainsKey(type))
return;
prepareMethodCalled[type] = true;
foreach (var ifaceInfo in type.interfaces)
Prepare(ifaceInfo.typeDef);
if (type.baseType != null)
Prepare(type.baseType.typeDef);
TypeInfo info;
if (memberInfos.TryGetType(type, out info))
func(info);
}
}
static List GetSorted(MethodNameGroups groups) {
var allGroups = new List(groups.GetAllGroups());
allGroups.Sort((a, b) => b.Count.CompareTo(a.Count));
return allGroups;
}
class GroupHelper {
MemberInfos memberInfos;
Dictionary visited = new Dictionary();
Dictionary methodToGroup;
List groups = new List();
IEnumerable allTypes;
Action func;
public GroupHelper(MemberInfos memberInfos, IEnumerable allTypes) {
this.memberInfos = memberInfos;
this.allTypes = allTypes;
}
public void Add(MethodNameGroup group) {
groups.Add(group);
}
public void VisitAll(Action func) {
this.func = func;
visited.Clear();
methodToGroup = new Dictionary();
foreach (var group in groups) {
foreach (var method in group.Methods)
methodToGroup[method] = group;
}
foreach (var type in allTypes)
Visit(type);
}
void Visit(MTypeDef type) {
if (visited.ContainsKey(type))
return;
visited[type] = true;
if (type.baseType != null)
Visit(type.baseType.typeDef);
foreach (var ifaceInfo in type.interfaces)
Visit(ifaceInfo.typeDef);
TypeInfo info;
if (!memberInfos.TryGetType(type, out info))
return;
foreach (var method in type.AllMethodsSorted) {
MethodNameGroup group;
if (!methodToGroup.TryGetValue(method, out group))
continue;
foreach (var m in group.Methods)
methodToGroup.Remove(m);
func(group);
}
}
}
static readonly Regex removeGenericsArityRegex = new Regex(@"`[0-9]+");
static string GetOverridePrefix(MethodNameGroup group, MMethodDef method) {
if (method == null || method.MethodDef.Overrides.Count == 0)
return "";
if (group.Methods.Count > 1) {
// Don't use an override prefix if the group has an iface method.
foreach (var m in group.Methods) {
if (m.Owner.TypeDef.IsInterface)
return "";
}
}
var overrideMethod = method.MethodDef.Overrides[0].MethodDeclaration;
var name = overrideMethod.DeclaringType.FullName.Replace('/', '.');
name = removeGenericsArityRegex.Replace(name, "");
return name + ".";
}
static string GetRealName(string name) {
int index = name.LastIndexOf('.');
if (index < 0)
return name;
return name.Substring(index + 1);
}
void PrepareRenameEvent(MethodNameGroup group, bool renameOverrides) {
string methodPrefix, overridePrefix;
var eventName = PrepareRenameEvent(group, renameOverrides, out overridePrefix, out methodPrefix);
if (eventName == null)
return;
var methodName = overridePrefix + methodPrefix + eventName;
foreach (var method in group.Methods)
memberInfos.Method(method).Rename(methodName);
}
string PrepareRenameEvent(MethodNameGroup group, bool renameOverrides, out string overridePrefix, out string methodPrefix) {
var eventMethod = GetEventMethod(group);
if (eventMethod == null)
throw new ApplicationException("No events found");
var eventDef = eventMethod.Event;
if (eventMethod == eventDef.AddMethod)
methodPrefix = "add_";
else if (eventMethod == eventDef.RemoveMethod)
methodPrefix = "remove_";
else if (eventMethod == eventDef.RaiseMethod)
methodPrefix = "raise_";
else
methodPrefix = "";
overridePrefix = GetOverridePrefix(group, eventMethod);
if (renameOverrides && overridePrefix == "")
return null;
if (!renameOverrides && overridePrefix != "")
return null;
string newEventName, oldEventName;
var eventInfo = memberInfos.Event(eventDef);
bool mustUseOldEventName = false;
if (overridePrefix == "")
oldEventName = eventInfo.oldName;
else {
var overriddenEventDef = GetOverriddenEvent(eventMethod);
if (overriddenEventDef == null)
oldEventName = GetRealName(eventInfo.oldName);
else {
mustUseOldEventName = true;
EventInfo info;
if (memberInfos.TryGetEvent(overriddenEventDef, out info))
oldEventName = GetRealName(info.newName);
else
oldEventName = GetRealName(overriddenEventDef.EventDef.Name.String);
}
}
if (eventInfo.renamed)
newEventName = GetRealName(eventInfo.newName);
else if (mustUseOldEventName || eventDef.Owner.Module.ObfuscatedFile.NameChecker.IsValidEventName(oldEventName))
newEventName = oldEventName;
else {
mergeStateHelper.Merge(MergeStateFlags.Events, group);
newEventName = GetAvailableName("Event_", false, group, (group2, newName) => IsEventAvailable(group2, newName));
}
var newEventNameWithPrefix = overridePrefix + newEventName;
foreach (var method in group.Methods) {
if (method.Event != null) {
memberInfos.Event(method.Event).Rename(newEventNameWithPrefix);
var ownerInfo = memberInfos.Type(method.Owner);
ownerInfo.variableNameState.AddEventName(newEventName);
ownerInfo.variableNameState.AddEventName(newEventNameWithPrefix);
}
}
return newEventName;
}
MEventDef GetOverriddenEvent(MMethodDef overrideMethod) {
MMethodDef overriddenMethod;
return GetOverriddenEvent(overrideMethod, out overriddenMethod);
}
MEventDef GetOverriddenEvent(MMethodDef overrideMethod, out MMethodDef overriddenMethod) {
var theMethod = overrideMethod.MethodDef.Overrides[0].MethodDeclaration;
overriddenMethod = modules.ResolveMethod(theMethod);
if (overriddenMethod != null)
return overriddenMethod.Event;
var extType = theMethod.DeclaringType;
if (extType == null)
return null;
var extTypeDef = modules.ResolveOther(extType);
if (extTypeDef == null)
return null;
overriddenMethod = extTypeDef.FindMethod(theMethod);
if (overriddenMethod != null)
return overriddenMethod.Event;
return null;
}
MMethodDef GetEventMethod(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (method.Event != null)
return method;
}
return null;
}
void PrepareRenameProperty(MethodNameGroup group, bool renameOverrides) {
string overridePrefix;
var propName = PrepareRenameProperty(group, renameOverrides, out overridePrefix);
if (propName == null)
return;
string methodPrefix;
switch (GetPropertyMethodType(group.Methods[0])) {
case PropertyMethodType.Getter:
methodPrefix = "get_";
break;
case PropertyMethodType.Setter:
methodPrefix = "set_";
break;
default:
throw new ApplicationException("Invalid property type");
}
var methodName = overridePrefix + methodPrefix + propName;
foreach (var method in group.Methods)
memberInfos.Method(method).Rename(methodName);
}
string PrepareRenameProperty(MethodNameGroup group, bool renameOverrides, out string overridePrefix) {
var propMethod = GetPropertyMethod(group);
if (propMethod == null)
throw new ApplicationException("No properties found");
overridePrefix = GetOverridePrefix(group, propMethod);
if (renameOverrides && overridePrefix == "")
return null;
if (!renameOverrides && overridePrefix != "")
return null;
string newPropName, oldPropName;
var propDef = propMethod.Property;
var propInfo = memberInfos.Property(propDef);
bool mustUseOldPropName = false;
if (overridePrefix == "")
oldPropName = propInfo.oldName;
else {
var overriddenPropDef = GetOverriddenProperty(propMethod);
if (overriddenPropDef == null)
oldPropName = GetRealName(propInfo.oldName);
else {
mustUseOldPropName = true;
PropertyInfo info;
if (memberInfos.TryGetProperty(overriddenPropDef, out info))
oldPropName = GetRealName(info.newName);
else
oldPropName = GetRealName(overriddenPropDef.PropertyDef.Name.String);
}
}
if (propInfo.renamed)
newPropName = GetRealName(propInfo.newName);
else if (mustUseOldPropName || propDef.Owner.Module.ObfuscatedFile.NameChecker.IsValidPropertyName(oldPropName))
newPropName = oldPropName;
else if (IsItemProperty(group))
newPropName = "Item";
else {
bool trySameName = true;
var propPrefix = GetSuggestedPropertyName(group);
if (propPrefix == null) {
trySameName = false;
propPrefix = GetNewPropertyNamePrefix(group);
}
mergeStateHelper.Merge(MergeStateFlags.Properties, group);
newPropName = GetAvailableName(propPrefix, trySameName, group, (group2, newName) => IsPropertyAvailable(group2, newName));
}
var newPropNameWithPrefix = overridePrefix + newPropName;
foreach (var method in group.Methods) {
if (method.Property != null) {
memberInfos.Property(method.Property).Rename(newPropNameWithPrefix);
var ownerInfo = memberInfos.Type(method.Owner);
ownerInfo.variableNameState.AddPropertyName(newPropName);
ownerInfo.variableNameState.AddPropertyName(newPropNameWithPrefix);
}
}
return newPropName;
}
bool IsItemProperty(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (method.Property != null && method.Property.IsItemProperty())
return true;
}
return false;
}
MPropertyDef GetOverriddenProperty(MMethodDef overrideMethod) {
var theMethod = overrideMethod.MethodDef.Overrides[0].MethodDeclaration;
var overriddenMethod = modules.ResolveMethod(theMethod);
if (overriddenMethod != null)
return overriddenMethod.Property;
var extType = theMethod.DeclaringType;
if (extType == null)
return null;
var extTypeDef = modules.ResolveOther(extType);
if (extTypeDef == null)
return null;
var theMethodDef = extTypeDef.FindMethod(theMethod);
if (theMethodDef != null)
return theMethodDef.Property;
return null;
}
MMethodDef GetPropertyMethod(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (method.Property != null)
return method;
}
return null;
}
string GetSuggestedPropertyName(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (method.Property == null)
continue;
var info = memberInfos.Property(method.Property);
if (info.suggestedName != null)
return info.suggestedName;
}
return null;
}
string GetNewPropertyNamePrefix(MethodNameGroup group) {
const string defaultVal = "Prop_";
var propType = GetPropertyType(group);
if (propType == null)
return defaultVal;
var elementType = propType.ScopeType.ToTypeSig(false).RemovePinnedAndModifiers();
if (propType is GenericInstSig || elementType is GenericSig)
return defaultVal;
var prefix = GetPrefix(propType);
string name = elementType.TypeName;
int i;
if ((i = name.IndexOf('`')) >= 0)
name = name.Substring(0, i);
if ((i = name.LastIndexOf('.')) >= 0)
name = name.Substring(i + 1);
if (name == "")
return defaultVal;
return prefix.ToUpperInvariant() + UpperFirst(name) + "_";
}
static string UpperFirst(string s) {
return s.Substring(0, 1).ToUpperInvariant() + s.Substring(1);
}
static string GetPrefix(TypeSig typeRef) {
string prefix = "";
typeRef = typeRef.RemovePinnedAndModifiers();
while (typeRef is PtrSig) {
typeRef = typeRef.Next;
prefix += "p";
}
return prefix;
}
enum PropertyMethodType {
Other,
Getter,
Setter,
}
static PropertyMethodType GetPropertyMethodType(MMethodDef method) {
if (DotNetUtils.HasReturnValue(method.MethodDef))
return PropertyMethodType.Getter;
if (method.VisibleParameterCount > 0)
return PropertyMethodType.Setter;
return PropertyMethodType.Other;
}
// Returns property type, or null if not all methods have the same type
TypeSig GetPropertyType(MethodNameGroup group) {
var methodType = GetPropertyMethodType(group.Methods[0]);
if (methodType == PropertyMethodType.Other)
return null;
TypeSig type = null;
foreach (var propMethod in group.Methods) {
TypeSig propType;
if (methodType == PropertyMethodType.Setter)
propType = propMethod.ParamDefs[propMethod.ParamDefs.Count - 1].ParameterDef.Type;
else
propType = propMethod.MethodDef.MethodSig.GetRetType();
if (type == null)
type = propType;
else if (!new SigComparer().Equals(type, propType))
return null;
}
return type;
}
MMethodDef GetOverrideMethod(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (method.MethodDef.Overrides.Count > 0)
return method;
}
return null;
}
void PrepareRenameVirtualMethods(MethodNameGroup group, string namePrefix, bool renameOverrides) {
if (!HasInvalidMethodName(group))
return;
if (HasDelegateOwner(group)) {
switch (group.Methods[0].MethodDef.Name.String) {
case "Invoke":
case "BeginInvoke":
case "EndInvoke":
return;
}
}
var overrideMethod = GetOverrideMethod(group);
var overridePrefix = GetOverridePrefix(group, overrideMethod);
if (renameOverrides && overridePrefix == "")
return;
if (!renameOverrides && overridePrefix != "")
return;
string newMethodName;
if (overridePrefix != "") {
var overrideInfo = memberInfos.Method(overrideMethod);
var overriddenMethod = GetOverriddenMethod(overrideMethod);
if (overriddenMethod == null)
newMethodName = GetRealName(overrideMethod.MethodDef.Overrides[0].MethodDeclaration.Name.String);
else
newMethodName = GetRealName(memberInfos.Method(overriddenMethod).newName);
}
else {
newMethodName = GetSuggestedMethodName(group);
if (newMethodName == null) {
mergeStateHelper.Merge(MergeStateFlags.Methods, group);
newMethodName = GetAvailableName(namePrefix, false, group, (group2, newName) => IsMethodAvailable(group2, newName));
}
}
var newMethodNameWithPrefix = overridePrefix + newMethodName;
foreach (var method in group.Methods)
memberInfos.Type(method.Owner).RenameMethod(method, newMethodNameWithPrefix);
}
[Flags]
enum MergeStateFlags {
None = 0,
Methods = 0x1,
Properties = 0x2,
Events = 0x4,
}
class MergeStateHelper {
MemberInfos memberInfos;
MergeStateFlags flags;
Dictionary visited = new Dictionary();
public MergeStateHelper(MemberInfos memberInfos) {
this.memberInfos = memberInfos;
}
public void Merge(MergeStateFlags flags, MethodNameGroup group) {
this.flags = flags;
visited.Clear();
foreach (var method in group.Methods)
Merge(method.Owner);
}
void Merge(MTypeDef type) {
if (visited.ContainsKey(type))
return;
visited[type] = true;
TypeInfo info;
if (!memberInfos.TryGetType(type, out info))
return;
if (type.baseType != null)
Merge(type.baseType.typeDef);
foreach (var ifaceInfo in type.interfaces)
Merge(ifaceInfo.typeDef);
if (type.baseType != null)
Merge(info, type.baseType.typeDef);
foreach (var ifaceInfo in type.interfaces)
Merge(info, ifaceInfo.typeDef);
}
void Merge(TypeInfo info, MTypeDef other) {
TypeInfo otherInfo;
if (!memberInfos.TryGetType(other, out otherInfo))
return;
if ((flags & MergeStateFlags.Methods) != MergeStateFlags.None)
info.variableNameState.MergeMethods(otherInfo.variableNameState);
if ((flags & MergeStateFlags.Properties) != MergeStateFlags.None)
info.variableNameState.MergeProperties(otherInfo.variableNameState);
if ((flags & MergeStateFlags.Events) != MergeStateFlags.None)
info.variableNameState.MergeEvents(otherInfo.variableNameState);
}
}
MMethodDef GetOverriddenMethod(MMethodDef overrideMethod) {
return modules.ResolveMethod(overrideMethod.MethodDef.Overrides[0].MethodDeclaration);
}
string GetSuggestedMethodName(MethodNameGroup group) {
foreach (var method in group.Methods) {
var info = memberInfos.Method(method);
if (info.suggestedName != null)
return info.suggestedName;
}
return null;
}
bool HasInvalidMethodName(MethodNameGroup group) {
foreach (var method in group.Methods) {
var typeInfo = memberInfos.Type(method.Owner);
var methodInfo = memberInfos.Method(method);
if (!typeInfo.NameChecker.IsValidMethodName(methodInfo.oldName))
return true;
}
return false;
}
static string GetAvailableName(string prefix, bool tryWithoutZero, MethodNameGroup group, Func checkAvailable) {
for (int i = 0; ; i++) {
string newName = i == 0 && tryWithoutZero ? prefix : prefix + i;
if (checkAvailable(group, newName))
return newName;
}
}
bool IsMethodAvailable(MethodNameGroup group, string methodName) {
foreach (var method in group.Methods) {
if (memberInfos.Type(method.Owner).variableNameState.IsMethodNameUsed(methodName))
return false;
}
return true;
}
bool IsPropertyAvailable(MethodNameGroup group, string methodName) {
foreach (var method in group.Methods) {
if (memberInfos.Type(method.Owner).variableNameState.IsPropertyNameUsed(methodName))
return false;
}
return true;
}
bool IsEventAvailable(MethodNameGroup group, string methodName) {
foreach (var method in group.Methods) {
if (memberInfos.Type(method.Owner).variableNameState.IsEventNameUsed(methodName))
return false;
}
return true;
}
bool HasDelegateOwner(MethodNameGroup group) {
foreach (var method in group.Methods) {
if (isDelegateClass.Check(method.Owner))
return true;
}
return false;
}
void PrepareRenameEntryPoints() {
foreach (var module in modules.TheModules) {
var entryPoint = module.ModuleDefMD.EntryPoint;
if (entryPoint == null)
continue;
var methodDef = modules.ResolveMethod(entryPoint);
if (methodDef == null) {
Logger.w(string.Format("Could not find entry point. Module: {0}, Method: {1}", module.ModuleDefMD.Location, Utils.RemoveNewlines(entryPoint)));
continue;
}
if (!methodDef.IsStatic())
continue;
memberInfos.Method(methodDef).suggestedName = "Main";
if (methodDef.ParamDefs.Count == 1) {
var paramDef = methodDef.ParamDefs[0];
var type = paramDef.ParameterDef.Type;
if (type.FullName == "System.String[]")
memberInfos.Param(paramDef).newName = "args";
}
}
}
}
}