264 lines
12 KiB
C#
264 lines
12 KiB
C#
// Copyright 2025 Code Philosophy
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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using dnlib.DotNet;
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using Obfuz.Editor;
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using System.Linq;
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namespace Obfuz.Utils
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{
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public class ObfuzIgnoreScopeComputeCache
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{
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private readonly CachedDictionary<IHasCustomAttribute, ObfuzScope?> _selfObfuzIgnoreScopeCache;
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private readonly CachedDictionary<TypeDef, ObfuzScope?> _enclosingObfuzIgnoreScopeCache;
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private readonly CachedDictionary<TypeDef, ObfuzScope?> _selfObfuzIgnoreApplyToChildTypesScopeCache;
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private readonly CachedDictionary<TypeDef, ObfuzScope?> _inheritedObfuzIgnoreScopeCache;
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public ObfuzIgnoreScopeComputeCache()
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{
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_selfObfuzIgnoreScopeCache = new CachedDictionary<IHasCustomAttribute, ObfuzScope?>(GetObfuzIgnoreScope);
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_enclosingObfuzIgnoreScopeCache = new CachedDictionary<TypeDef, ObfuzScope?>(GetEnclosingObfuzIgnoreScope);
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_selfObfuzIgnoreApplyToChildTypesScopeCache = new CachedDictionary<TypeDef, ObfuzScope?>(GetObfuzIgnoreScopeApplyToChildTypes);
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_inheritedObfuzIgnoreScopeCache = new CachedDictionary<TypeDef, ObfuzScope?>(GetInheritObfuzIgnoreScope);
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}
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private ObfuzScope? GetObfuzIgnoreScope(IHasCustomAttribute obj)
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{
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var ca = obj.CustomAttributes.FirstOrDefault(c => c.AttributeType.FullName == ConstValues.ObfuzIgnoreAttributeFullName);
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if (ca == null)
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{
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return null;
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}
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var scope = (ObfuzScope)ca.ConstructorArguments[0].Value;
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return scope;
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}
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private ObfuzScope? GetEnclosingObfuzIgnoreScope(TypeDef typeDef)
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{
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TypeDef cur = typeDef.DeclaringType;
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while (cur != null)
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{
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var ca = cur.CustomAttributes?.FirstOrDefault(c => c.AttributeType.FullName == ConstValues.ObfuzIgnoreAttributeFullName);
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if (ca != null)
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{
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var scope = (ObfuzScope)ca.ConstructorArguments[0].Value;
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CANamedArgument inheritByNestedTypesArg = ca.GetNamedArgument("ApplyToNestedTypes", false);
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bool inheritByNestedTypes = inheritByNestedTypesArg == null || (bool)inheritByNestedTypesArg.Value;
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return inheritByNestedTypes ? (ObfuzScope?)scope : null;
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}
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cur = cur.DeclaringType;
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}
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return null;
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}
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private ObfuzScope? GetObfuzIgnoreScopeApplyToChildTypes(TypeDef cur)
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{
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if (cur.Module.IsCoreLibraryModule == true)
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{
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return null;
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}
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var ca = cur.CustomAttributes?.FirstOrDefault(c => c.AttributeType.FullName == ConstValues.ObfuzIgnoreAttributeFullName);
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if (ca != null)
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{
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var scope = (ObfuzScope)ca.ConstructorArguments[0].Value;
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CANamedArgument inheritByChildTypesArg = ca.GetNamedArgument("ApplyToChildTypes", false);
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bool inheritByChildTypes = inheritByChildTypesArg != null && (bool)inheritByChildTypesArg.Value;
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if (inheritByChildTypes)
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{
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return scope;
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}
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}
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return null;
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}
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private ObfuzScope? GetInheritObfuzIgnoreScope(TypeDef typeDef)
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{
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TypeDef cur = typeDef;
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for (; cur != null; cur = MetaUtil.GetBaseTypeDef(cur))
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{
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ObfuzScope? scope = _selfObfuzIgnoreApplyToChildTypesScopeCache.GetValue(cur);
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if (scope != null)
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{
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return scope;
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}
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foreach (var interfaceType in cur.Interfaces)
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{
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TypeDef interfaceTypeDef = interfaceType.Interface.ResolveTypeDef();
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if (interfaceTypeDef != null)
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{
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ObfuzScope? interfaceScope = _selfObfuzIgnoreApplyToChildTypesScopeCache.GetValue(interfaceTypeDef);
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if (interfaceScope != null)
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{
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return interfaceScope;
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}
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}
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}
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}
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return null;
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}
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//private ObfuzScope? GetSelfOrDeclaringOrEnclosingOrInheritObfuzIgnoreScope((IHasCustomAttribute obj, TypeDef declaringType) objAndDeclaringType, ObfuzScope targetScope)
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//{
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// ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(objAndDeclaringType.obj);
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// if (scope != null)
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// {
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// return scope;
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// }
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// if (objAndDeclaringType.declaringType == null)
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// {
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// return null;
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// }
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// ObfuzScope? declaringOrEnclosingScope = _selfObfuzIgnoreScopeCache.GetValue(declaringType) ?? _enclosingObfuzIgnoreScopeCache.GetValue(declaringType) ?? _inheritedObfuzIgnoreScopeCache.GetValue(declaringType);
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// return declaringOrEnclosingScope != null && (declaringOrEnclosingScope & targetScope) != 0;
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//}
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//private bool HasObfuzIgnoreScope(IHasCustomAttribute obj, ObfuzScope targetScope)
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//{
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// ObfuzScope? objScope = _selfObfuzIgnoreScopeCache.GetValue(obj);
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// return objScope != null && (objScope & targetScope) != 0;
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//}
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//private bool HasDeclaringOrEnclosingOrInheritObfuzIgnoreScope(TypeDef typeDef, ObfuzScope targetScope)
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//{
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// if (typeDef == null)
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// {
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// return false;
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// }
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// ObfuzScope? declaringOrEnclosingScope = _selfObfuzIgnoreScopeCache.GetValue(typeDef) ?? _enclosingObfuzIgnoreScopeCache.GetValue(typeDef) ?? _inheritedObfuzIgnoreScopeCache.GetValue(typeDef);
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// return declaringOrEnclosingScope != null && (declaringOrEnclosingScope & targetScope) != 0;
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//}
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public ObfuzScope? GetSelfOrDeclaringOrEnclosingOrInheritObfuzIgnoreScope(IHasCustomAttribute obj, TypeDef declaringType)
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{
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ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(obj);
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if (scope != null)
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{
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return scope;
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}
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if (declaringType == null)
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{
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return null;
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}
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ObfuzScope? declaringOrEnclosingScope = _selfObfuzIgnoreScopeCache.GetValue(declaringType) ?? _enclosingObfuzIgnoreScopeCache.GetValue(declaringType) ?? _inheritedObfuzIgnoreScopeCache.GetValue(declaringType);
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return declaringOrEnclosingScope;
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}
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public bool HasSelfOrEnclosingOrInheritObfuzIgnoreScope(TypeDef typeDef, ObfuzScope targetScope)
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{
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ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(typeDef) ?? _enclosingObfuzIgnoreScopeCache.GetValue(typeDef) ?? _inheritedObfuzIgnoreScopeCache.GetValue(typeDef);
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return scope != null && (scope & targetScope) != 0;
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}
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public bool HasSelfOrDeclaringOrEnclosingOrInheritObfuzIgnoreScope(IHasCustomAttribute obj, TypeDef declaringType, ObfuzScope targetScope)
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{
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ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(obj);
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if (scope != null)
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{
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return (scope & targetScope) != 0;
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}
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if (declaringType == null)
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{
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return false;
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}
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ObfuzScope? declaringOrEnclosingScope = _selfObfuzIgnoreScopeCache.GetValue(declaringType) ?? _enclosingObfuzIgnoreScopeCache.GetValue(declaringType) ?? _inheritedObfuzIgnoreScopeCache.GetValue(declaringType);
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return declaringOrEnclosingScope != null && (declaringOrEnclosingScope & targetScope) != 0;
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}
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public bool HasSelfOrInheritPropertyOrEventOrOrTypeDefObfuzIgnoreScope(MethodDef obj, ObfuzScope targetScope)
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{
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ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(obj);
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if (scope != null && (scope & targetScope) != 0)
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{
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return true;
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}
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TypeDef declaringType = obj.DeclaringType;
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ObfuzScope? declaringOrEnclosingScope = _selfObfuzIgnoreScopeCache.GetValue(declaringType) ?? _enclosingObfuzIgnoreScopeCache.GetValue(declaringType) ?? _inheritedObfuzIgnoreScopeCache.GetValue(declaringType);
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foreach (var propertyDef in declaringType.Properties)
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{
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if (propertyDef.GetMethod == obj || propertyDef.SetMethod == obj)
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{
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ObfuzScope? finalScope = _selfObfuzIgnoreScopeCache.GetValue(propertyDef);
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if (finalScope != null && (finalScope & targetScope) != 0)
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{
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return true;
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}
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break;
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}
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}
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foreach (var eventDef in declaringType.Events)
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{
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if (eventDef.AddMethod == obj || eventDef.RemoveMethod == obj)
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{
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ObfuzScope? finalScope = _selfObfuzIgnoreScopeCache.GetValue(eventDef);
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if (finalScope != null && (finalScope & targetScope) != 0)
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{
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return true;
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}
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break;
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}
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}
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return declaringOrEnclosingScope != null && (declaringOrEnclosingScope & targetScope) != 0;
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}
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public bool HasSelfOrInheritPropertyOrEventOrOrTypeDefIgnoreMethodName(MethodDef obj)
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{
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ObfuzScope? scope = _selfObfuzIgnoreScopeCache.GetValue(obj);
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if (scope != null && (scope & ObfuzScope.MethodName) != 0)
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{
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return true;
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}
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TypeDef declaringType = obj.DeclaringType;
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foreach (var propertyDef in declaringType.Properties)
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{
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if (propertyDef.GetMethod == obj || propertyDef.SetMethod == obj)
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{
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ObfuzScope? finalScope = GetObfuzIgnoreScope(propertyDef);
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if (finalScope != null && (finalScope & ObfuzScope.PropertyGetterSetterName) != 0)
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{
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return true;
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}
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break;
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}
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}
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foreach (var eventDef in declaringType.Events)
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{
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if (eventDef.AddMethod == obj || eventDef.RemoveMethod == obj)
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{
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ObfuzScope? finalScope = GetObfuzIgnoreScope(eventDef);
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if (finalScope != null && (finalScope & ObfuzScope.EventAddRemoveFireName) != 0)
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{
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return true;
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}
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break;
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}
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}
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return HasSelfOrEnclosingOrInheritObfuzIgnoreScope(declaringType, ObfuzScope.MethodName | ObfuzScope.PropertyGetterSetterName | ObfuzScope.EventAddRemoveFireName);
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}
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}
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}
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