| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System.Buffers; |
| | | 5 | | using System.Reflection.Metadata; |
| | | 6 | | using System.Text; |
| | | 7 | | |
| | | 8 | | namespace DotnetFuzzing.Fuzzers |
| | | 9 | | { |
| | | 10 | | internal sealed class TypeNameFuzzer : IFuzzer |
| | | 11 | | { |
| | 0 | 12 | | public string[] TargetAssemblies { get; } = ["System.Reflection.Metadata"]; |
| | 0 | 13 | | public string[] TargetCoreLibPrefixes => []; |
| | 0 | 14 | | public string Dictionary => "typename.dict"; |
| | | 15 | | |
| | | 16 | | public void FuzzTarget(ReadOnlySpan<byte> bytes) |
| | 0 | 17 | | { |
| | 0 | 18 | | Span<char> charSpan = new char[Encoding.UTF8.GetCharCount(bytes)]; |
| | 0 | 19 | | Encoding.UTF8.GetChars(bytes, charSpan); |
| | 0 | 20 | | using var poisonAfter = PooledBoundedMemory<char>.Rent(charSpan, PoisonPagePlacement.After); |
| | 0 | 21 | | using var poisonBefore = PooledBoundedMemory<char>.Rent(charSpan, PoisonPagePlacement.Before); |
| | | 22 | | |
| | 0 | 23 | | Test(poisonAfter.Span); |
| | 0 | 24 | | Test(poisonBefore.Span); |
| | 0 | 25 | | } |
| | | 26 | | |
| | | 27 | | private static void Test(Span<char> testSpan) |
| | 0 | 28 | | { |
| | 0 | 29 | | if (TypeName.TryParse(testSpan, out TypeName? result1)) |
| | 0 | 30 | | { |
| | 0 | 31 | | TypeName result2 = TypeName.Parse(testSpan); |
| | 0 | 32 | | Assert.Equal(result1.Name, result2.Name); |
| | 0 | 33 | | Assert.Equal(result1.FullName, result2.FullName); |
| | 0 | 34 | | Assert.Equal(result1.AssemblyQualifiedName, result2.AssemblyQualifiedName); |
| | 0 | 35 | | Assert.Equal(result1.IsSimple, result2.IsSimple); |
| | 0 | 36 | | Assert.Equal(result1.IsNested, result2.IsNested); |
| | 0 | 37 | | Assert.Equal(result1.IsArray, result2.IsArray); |
| | 0 | 38 | | Assert.Equal(result1.GetNodeCount(), result2.GetNodeCount()); |
| | 0 | 39 | | if (result1.AssemblyName != null) |
| | 0 | 40 | | { |
| | 0 | 41 | | Assert.Equal(result1.AssemblyName.Name, result2.AssemblyName!.Name); |
| | 0 | 42 | | Assert.Equal(result1.AssemblyName.FullName, result2.AssemblyName.FullName); |
| | 0 | 43 | | Assert.Equal(result1.AssemblyName.CultureName, result2.AssemblyName.CultureName); |
| | 0 | 44 | | Assert.Equal(result1.AssemblyName.Version?.ToString(), result2.AssemblyName.Version?.ToString()); |
| | 0 | 45 | | } |
| | | 46 | | else |
| | 0 | 47 | | { |
| | 0 | 48 | | Assert.Equal(result1.AssemblyName, result2.AssemblyName); |
| | 0 | 49 | | } |
| | 0 | 50 | | } |
| | | 51 | | else |
| | 0 | 52 | | { |
| | | 53 | | try |
| | 0 | 54 | | { |
| | 0 | 55 | | TypeName.Parse(testSpan); |
| | 0 | 56 | | throw new Exception("Parsing was supposed to fail!"); |
| | | 57 | | } |
| | 0 | 58 | | catch (ArgumentException) { } |
| | 0 | 59 | | catch (InvalidOperationException) { } |
| | 0 | 60 | | } |
| | 0 | 61 | | } |
| | | 62 | | } |
| | | 63 | | } |