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添加string-length-range和array-length-range 白名单

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walon 2025-05-09 10:17:08 +08:00
parent 96282b6c91
commit f4aa76ca39
1 changed files with 53 additions and 1 deletions
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54
Editor/ObfusPasses/ConstObfus/Policies/ConfigurableObfuscationPolicy.cs
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@ -45,6 +45,8 @@ namespace Obfuz.ObfusPasses.ConstObfus.Policies
public List<NumberRange<long>> notEncryptLongRanges = new List<NumberRange<long>>(); public List<NumberRange<long>> notEncryptLongRanges = new List<NumberRange<long>>();
public List<NumberRange<float>> notEncryptFloatRanges = new List<NumberRange<float>>(); public List<NumberRange<float>> notEncryptFloatRanges = new List<NumberRange<float>>();
public List<NumberRange<double>> notEncryptDoubleRanges = new List<NumberRange<double>>(); public List<NumberRange<double>> notEncryptDoubleRanges = new List<NumberRange<double>>();
public List<NumberRange<int>> notEncryptArrayLengthRanges = new List<NumberRange<int>>();
public List<NumberRange<int>> notEncryptStringLengthRanges = new List<NumberRange<int>>();
public void InheritParent(ObfuscationRule parentRule) public void InheritParent(ObfuscationRule parentRule)
{ {
@ -76,6 +78,8 @@ namespace Obfuz.ObfusPasses.ConstObfus.Policies
notEncryptLongRanges.AddRange(parentRule.notEncryptLongRanges); notEncryptLongRanges.AddRange(parentRule.notEncryptLongRanges);
notEncryptFloatRanges.AddRange(parentRule.notEncryptFloatRanges); notEncryptFloatRanges.AddRange(parentRule.notEncryptFloatRanges);
notEncryptDoubleRanges.AddRange(parentRule.notEncryptDoubleRanges); notEncryptDoubleRanges.AddRange(parentRule.notEncryptDoubleRanges);
notEncryptArrayLengthRanges.AddRange(parentRule.notEncryptArrayLengthRanges);
notEncryptStringLengthRanges.AddRange(parentRule.notEncryptStringLengthRanges);
} }
} }
@ -366,6 +370,26 @@ namespace Obfuz.ObfusPasses.ConstObfus.Policies
rule.notEncryptDoubleRanges.Add(new NumberRange<double>(ParseNullableDouble(parts[0]), ParseNullableDouble(parts[1]))); rule.notEncryptDoubleRanges.Add(new NumberRange<double>(ParseNullableDouble(parts[0]), ParseNullableDouble(parts[1])));
break; break;
} }
case "string-length-range":
{
var parts = value.Split(",");
if (parts.Length != 2)
{
throw new Exception($"Invalid xml file, string-length-range {value} is invalid");
}
rule.notEncryptStringLengthRanges.Add(new NumberRange<int>(ParseNullableInt(parts[0]), ParseNullableInt(parts[1])));
break;
}
case "array-length-range":
{
var parts = value.Split(",");
if (parts.Length != 2)
{
throw new Exception($"Invalid xml file, array-length-range {value} is invalid");
}
rule.notEncryptArrayLengthRanges.Add(new NumberRange<int>(ParseNullableInt(parts[0]), ParseNullableInt(parts[1])));
break;
}
default: throw new Exception($"Invalid xml file, unknown whitelist type {type} in {childEle.Name} node"); default: throw new Exception($"Invalid xml file, unknown whitelist type {type} in {childEle.Name} node");
} }
break; break;
@ -592,13 +616,41 @@ namespace Obfuz.ObfusPasses.ConstObfus.Policies
{ {
return false; return false;
} }
foreach (var range in rule.notEncryptStringLengthRanges)
{
if (range.min != null && value.Length < range.min)
{
continue;
}
if (range.max != null && value.Length > range.max)
{
continue;
}
return false;
}
return true; return true;
} }
public override bool NeedObfuscateArray(MethodDef method, byte[] array) public override bool NeedObfuscateArray(MethodDef method, byte[] array)
{ {
ObfuscationRule rule = GetMethodObfuscationRule(method); ObfuscationRule rule = GetMethodObfuscationRule(method);
return rule.encryptArray != false; if (rule.encryptArray == false)
{
return false;
}
foreach (var range in rule.notEncryptArrayLengthRanges)
{
if (range.min != null && array.Length < range.min)
{
continue;
}
if (range.max != null && array.Length > range.max)
{
continue;
}
return false;
}
return true;
} }
} }
} }