支持custom rename policy

com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/SymbolRename.cs

@@ -33,6 +33,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus
         private readonly Dictionary<ModuleDef, List<CustomAttributeInfo>> _customAttributeArgumentsWithTypeByMods = new Dictionary<ModuleDef, List<CustomAttributeInfo>>();
         private readonly RenameRecordMap _renameRecordMap;
         private readonly VirtualMethodGroupCalculator _virtualMethodGroupCalculator;
+        private readonly List<IObfuscationPolicy> _customPolicies = new List<IObfuscationPolicy>();
 
         class CustomAttributeInfo
         {
@@ -50,6 +51,18 @@ namespace Obfuz.ObfusPasses.SymbolObfus
             _renameRecordMap = new RenameRecordMap(settings.debug ? null : settings.symbolMappingFile);
             _virtualMethodGroupCalculator = new VirtualMethodGroupCalculator();
             _nameMaker = settings.debug ? NameMakerFactory.CreateDebugNameMaker() :  NameMakerFactory.CreateNameMakerBaseASCIICharSet(settings.obfuscatedNamePrefix);
+
+            foreach (var customPolicyType in settings.customRenamePolicyTypes)
+            {
+                if (Activator.CreateInstance(customPolicyType, new object[] { this }) is IObfuscationPolicy customPolicy)
+                {
+                    _customPolicies.Add(customPolicy);
+                }
+                else
+                {
+                    Debug.LogWarning($"Custom rename policy type {customPolicyType} is not a valid IObfuscationPolicy");
+                }
+            }
         }
 
         public void Init()
@@ -59,8 +72,18 @@ namespace Obfuz.ObfusPasses.SymbolObfus
             _toObfuscatedModules = ctx.modulesToObfuscate;
             _obfuscatedAndNotObfuscatedModules = ctx.allObfuscationRelativeModules;
             _toObfuscatedModuleSet = new HashSet<ModuleDef>(ctx.modulesToObfuscate);
+
             var obfuscateRuleConfig = new ConfigurableRenamePolicy(ctx.coreSettings.assembliesToObfuscate, ctx.modulesToObfuscate,  _obfuscationRuleFiles);
-            _renamePolicy = new CacheRenamePolicy(new CombineRenamePolicy(new SupportPassPolicy(ctx.passPolicy), new SystemRenamePolicy(), new UnityRenamePolicy(), obfuscateRuleConfig));
+            var totalRenamePolicies = new List<IObfuscationPolicy>
+            {
+                new SupportPassPolicy(ctx.passPolicy),
+                new SystemRenamePolicy(),
+                new UnityRenamePolicy(),
+                obfuscateRuleConfig,
+            };
+            totalRenamePolicies.AddRange(_customPolicies);
+
+            _renamePolicy = new CacheRenamePolicy(new CombineRenamePolicy(totalRenamePolicies.ToArray()));
             BuildCustomAttributeArguments();
         }
 

com.code-philosophy.obfuz/Editor/Obfuscator.cs

@@ -128,10 +128,7 @@ namespace Obfuz
             }
             var vms = new VirtualMachineSimulator(vm, secretKey);
 
-            var generatedVmTypes = AppDomain.CurrentDomain.GetAssemblies()
-                .Select(assembly => assembly.GetType("Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine"))
-                .Where(type => type != null)
-                .ToList();
+            var generatedVmTypes = ReflectionUtil.FindTypesInCurrentAppDomain("Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine");
             if (generatedVmTypes.Count == 0)
             {
                 throw new Exception($"class Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine not found in any assembly! Please run `Obfuz/GenerateVm` to generate it!");

com.code-philosophy.obfuz/Editor/Settings/SymbolObfuscationSettings.cs

@@ -1,4 +1,6 @@
-using System;
+using Obfuz.ObfusPasses.SymbolObfus;
+using Obfuz.Utils;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -14,6 +16,7 @@ namespace Obfuz.Settings
         public bool useConsistentNamespaceObfuscation;
         public string symbolMappingFile;
         public List<string> ruleFiles;
+        public List<Type> customRenamePolicyTypes;
     }
 
     [Serializable]
@@ -33,6 +36,9 @@ namespace Obfuz.Settings
         [Tooltip("rule files")]
         public string[] ruleFiles;
 
+        [Tooltip("custom rename policy types")]
+        public string[] customRenamePolicyTypes;
+
         public SymbolObfuscationSettingsFacade ToFacade()
         {
             return new SymbolObfuscationSettingsFacade
@@ -42,6 +48,7 @@ namespace Obfuz.Settings
                 useConsistentNamespaceObfuscation = useConsistentNamespaceObfuscation,
                 symbolMappingFile = symbolMappingFile,
                 ruleFiles = ruleFiles.ToList(),
+                customRenamePolicyTypes = customRenamePolicyTypes.Select(typeName => ReflectionUtil.FindUniqueTypeInCurrentAppDomain(typeName)).ToList(),
             };
         }
     }

com.code-philosophy.obfuz/Editor/Utils/ReflectionUtil.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Obfuz.Utils
+{
+    public static class ReflectionUtil
+    {
+        public static List<Type> FindTypesInCurrentAppDomain(string fullName)
+        {
+            return AppDomain.CurrentDomain.GetAssemblies()
+                .Select(assembly => assembly.GetType(fullName))
+                .Where(type => type != null)
+                .ToList();
+        }
+
+        public static Type FindUniqueTypeInCurrentAppDomain(string fullName)
+        {
+            var foundTypes = FindTypesInCurrentAppDomain(fullName);
+            if (foundTypes.Count == 0)
+            {
+                throw new Exception($"class {fullName} not found in any assembly!");
+            }
+            if (foundTypes.Count > 1)
+            {
+                throw new Exception($"class {fullName} found in multiple assemblies! Please retain only one!");
+            }
+            return foundTypes[0];
+        }
+    }
+}

com.code-philosophy.obfuz/Editor/Utils/ReflectionUtil.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6fac8216afeffb746b1b67d1f16883b8
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: