94 lines
3.6 KiB
C#
94 lines
3.6 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.Settings;
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using Obfuz.Utils;
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using System.Linq;
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namespace Obfuz.ObfusPasses.RemoveConstField
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{
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public class RemoveConstFieldPass : ObfuscationPassBase
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{
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private RemoveConstFieldSettingsFacade _settings;
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private ObfuzIgnoreScopeComputeCache _obfuzIgnoreScopeComputeCache;
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private IRemoveConstFieldPolicy _removeConstFieldPolicy;
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public override ObfuscationPassType Type => ObfuscationPassType.RemoveConstField;
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public RemoveConstFieldPass(RemoveConstFieldSettingsFacade settings)
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{
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_settings = settings;
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}
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public override void Start()
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{
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var ctx = ObfuscationPassContext.Current;
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_obfuzIgnoreScopeComputeCache = ctx.obfuzIgnoreScopeComputeCache;
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_removeConstFieldPolicy = new ConfigurableRemoveConstFieldPolicy(ctx.coreSettings.assembliesToObfuscate, _settings.ruleFiles);
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}
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public override void Stop()
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{
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}
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public override void Process()
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{
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var ctx = ObfuscationPassContext.Current;
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var modules = ctx.modulesToObfuscate;
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ConfigurablePassPolicy passPolicy = ctx.passPolicy;
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foreach (ModuleDef mod in modules)
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{
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// ToArray to avoid modify list exception
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foreach (TypeDef type in mod.GetTypes())
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{
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if (type.IsEnum)
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{
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continue;
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}
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foreach (FieldDef field in type.Fields.ToArray())
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{
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if (!field.IsLiteral)
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{
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continue;
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}
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if (!Support(passPolicy.GetFieldObfuscationPasses(field)))
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{
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continue;
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}
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if (_obfuzIgnoreScopeComputeCache.HasSelfOrDeclaringOrEnclosingOrInheritObfuzIgnoreScope(field, field.DeclaringType, ObfuzScope.Field))
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{
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continue;
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}
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if (_removeConstFieldPolicy.NeedPreserved(field))
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{
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continue;
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}
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field.DeclaringType = null;
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//Debug.Log($"Remove const field {field.FullName} in type {type.FullName} in module {mod.Name}");
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}
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}
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}
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}
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}
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}
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