static void Main(string[] args)
{
if (args.Length == 0 || new[] {"/?", "-?", "-h", "--help"}.Any(x => string.Equals(args[0], x, StringComparison.OrdinalIgnoreCase)))
{
PrintUsage();
return;
}
foreach (var fileName in args)
{
Console.WriteLine(fileName);
Console.WriteLine(new string('*', 80));
try
{
using (var stream = File.OpenRead(fileName))
using (var peFile = new PEReader(stream))
{
var metadataReader = peFile.GetMetadataReader();
var visualizer = new MetadataVisualizer(metadataReader, Console.Out);
visualizer.Visualize();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
public PE(string fileName)
{
FileName = Path.GetFullPath(fileName);
Uri = new Uri(FileName);
IsPEFile = false;
try
{
_fs = File.OpenRead(FileName);
byte byteRead = (byte)_fs.ReadByte();
if (byteRead != 'M') { return; }
byteRead = (byte)_fs.ReadByte();
if (byteRead != 'Z') { return; }
_fs.Seek(0, SeekOrigin.Begin);
_peReader = new PEReader(_fs);
PEHeaders = _peReader.PEHeaders;
IsPEFile = true;
}
catch (IOException e) { LoadException = e; }
catch (BadImageFormatException e) { LoadException = e; }
catch (UnauthorizedAccessException e) { LoadException = e; }
if (IsPEFile)
{
m_pImage = new SafePointer(_peReader.GetEntireImage().GetContent().ToBuilder().ToArray());
if (IsManaged)
{
_metadataReader = _peReader.GetMetadataReader();
}
}
}
/// <summary>
/// Returns true if the PE file meets all of the pre-conditions to be Open Source Signed.
/// Returns false and logs msbuild errors otherwise.
/// </summary>
private static bool Validate(PEReader peReader)
{
if (!peReader.HasMetadata)
{
Console.Error.WriteLine("PE file is not a managed module.");
return false;
}
var mdReader = peReader.GetMetadataReader();
if (!mdReader.IsAssembly)
{
Console.Error.WriteLine("PE file is not an assembly.");
return false;
}
CorHeader header = peReader.PEHeaders.CorHeader;
if ((header.Flags & CorFlags.StrongNameSigned) == CorFlags.StrongNameSigned)
{
Console.Error.WriteLine("PE file is already strong-name signed.");
return false;
}
if ((header.StrongNameSignatureDirectory.Size <= 0) || mdReader.GetAssemblyDefinition().PublicKey.IsNil)
{
Console.Error.WriteLine("PE file is not a delay-signed assembly.");
return false;
}
return true;
}
public InspectableAssembly(string filename, ParseContext context)
{
Stream = File.OpenRead(filename);
Pe = new PEReader(Stream);
Reader = Pe.GetMetadataReader();
Context = context;
}
public static AssemblyIdentity TryGetAssemblyIdentity(string filePath)
{
try
{
using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete))
using (var peReader = new PEReader(stream))
{
var metadataReader = peReader.GetMetadataReader();
AssemblyDefinition assemblyDefinition = metadataReader.GetAssemblyDefinition();
string name = metadataReader.GetString(assemblyDefinition.Name);
Version version = assemblyDefinition.Version;
StringHandle cultureHandle = assemblyDefinition.Culture;
string cultureName = (!cultureHandle.IsNil) ? metadataReader.GetString(cultureHandle) : null;
AssemblyFlags flags = assemblyDefinition.Flags;
bool hasPublicKey = (flags & AssemblyFlags.PublicKey) != 0;
BlobHandle publicKeyHandle = assemblyDefinition.PublicKey;
ImmutableArray<byte> publicKeyOrToken = !publicKeyHandle.IsNil
? metadataReader.GetBlobBytes(publicKeyHandle).AsImmutableOrNull()
: default(ImmutableArray<byte>);
return new AssemblyIdentity(name, version, cultureName, publicKeyOrToken, hasPublicKey);
}
}
catch { }
return null;
}
public void OpenNativeImage()
{
using (var reader = new PEReader(File.OpenRead(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "kernel32.dll"))))
{
Assert.False(reader.HasMetadata);
Assert.True(reader.PEHeaders.IsDll);
Assert.False(reader.PEHeaders.IsExe);
Assert.Throws<InvalidOperationException>(() => reader.GetMetadataReader());
}
}
public override bool Execute()
{
if (Assemblies == null || Assemblies.Length == 0)
return true;
List<ITaskItem> references = new List<ITaskItem>();
List<ITaskItem> nativeLibs = new List<ITaskItem>();
foreach (var assemblyItem in Assemblies)
{
try
{
if (!File.Exists(assemblyItem.ItemSpec))
{
Log.LogError($"File {assemblyItem.ItemSpec} does not exist, ensure you have built libraries before building the package.");
continue;
}
using (PEReader peReader = new PEReader(new FileStream(assemblyItem.ItemSpec, FileMode.Open, FileAccess.Read, FileShare.Delete | FileShare.Read)))
{
MetadataReader reader = peReader.GetMetadataReader();
foreach (var handle in reader.AssemblyReferences)
{
AssemblyReference reference = reader.GetAssemblyReference(handle);
TaskItem referenceItem = new TaskItem(reader.GetString(reference.Name));
assemblyItem.CopyMetadataTo(referenceItem);
referenceItem.SetMetadata("Version", reference.Version.ToString());
referenceItem.SetMetadata("AssemblyVersion", reference.Version.ToString());
references.Add(referenceItem);
}
for (int i = 1, count = reader.GetTableRowCount(TableIndex.ModuleRef); i <= count; i++)
{
var moduleRef = reader.GetModuleReference(MetadataTokens.ModuleReferenceHandle(i));
var moduleName = reader.GetString(moduleRef.Name);
TaskItem nativeLib = new TaskItem(moduleName);
assemblyItem.CopyMetadataTo(nativeLib);
nativeLibs.Add(nativeLib);
}
}
}
catch (InvalidOperationException)
{
// Ignore invalid assemblies
}
}
ReferencedAssemblies = references.ToArray();
ReferencedNativeLibraries = nativeLibs.ToArray();
return true;
}
public static ISymUnmanagedReader CreateReader(Stream pdbStream, Stream peStreamOpt = null)
{
if (peStreamOpt != null)
{
var peReader = new PEReader(peStreamOpt);
return CreateReader(pdbStream, peReader.GetMetadataReader(), peReader);
}
else
{
return CreateReader(pdbStream, null, null);
}
}
public void IL_LazyLoad()
{
var peStream = new MemoryStream(TestResources.Misc.Members);
using (var reader = new PEReader(peStream, PEStreamOptions.LeaveOpen))
{
var md = reader.GetMetadataReader();
var il = reader.GetMethodBody(md.GetMethodDefinition(MetadataTokens.MethodDefinitionHandle(1)).RelativeVirtualAddress);
Assert.Equal(new byte[] { 0, 42 }, il.GetILBytes());
Assert.Equal(8, il.MaxStack);
}
}
public static AssemblyInfo GetAssemblyInfo(string path)
{
using (var peReader = new PEReader(new FileStream(path, FileMode.Open, FileAccess.Read)))
{
var contractReader = peReader.GetMetadataReader();
var assembly = contractReader.GetAssemblyDefinition();
var name = contractReader.GetString(assembly.Name);
var version = assembly.Version;
var references = GetAssemblyReferences(contractReader);
return new AssemblyInfo(path, name, version, references);
}
}
public override bool Execute()
{
Log.LogMessage(MessageImportance.High, "About to inspect {0} test assemblies.", TestBinaries.Length);
var perfTests = new List<ITaskItem>();
foreach (var testBinary in TestBinaries)
{
Log.LogMessage(MessageImportance.Low, "Inspecting assembly {0}.", testBinary.ItemSpec);
using (var stream = File.OpenRead(testBinary.ItemSpec))
{
using (var peFile = new PEReader(stream))
{
if(!peFile.HasMetadata){
continue;
}
var mdReader = peFile.GetMetadataReader();
foreach (var asmRefHandle in mdReader.AssemblyReferences)
{
var asmRef = mdReader.GetAssemblyReference(asmRefHandle);
var asmRefName = mdReader.GetString(asmRef.Name);
// if an assembly contains a reference to xunit.performance.core
// then it contains at least one performance test.
if (string.Compare(asmRefName, "xunit.performance.core", StringComparison.OrdinalIgnoreCase) == 0)
{
var fileName = (GetFullPaths) ? Path.GetFullPath(testBinary.ItemSpec) : Path.GetFileNameWithoutExtension(testBinary.ItemSpec);
perfTests.Add(new TaskItem(fileName));
Log.LogMessage("+ Assembly {0} contains one or more performance tests.", fileName);
break;
}
}
}
}
}
if (perfTests.Count > 0)
{
PerfTestAssemblies = perfTests.ToArray();
Log.LogMessage(MessageImportance.High, "Found {0} assemblies containing performance tests.", perfTests.Count);
}
else
{
Log.LogWarning("Didn't find any performance tests.");
}
return true;
}
public void BasicValidation()
{
using (var peStream = new MemoryStream())
{
var ilBuilder = new BlobBuilder();
var metadataBuilder = new MetadataBuilder();
var entryPoint = BasicValidationEmit(metadataBuilder, ilBuilder);
WritePEImage(peStream, metadataBuilder, ilBuilder, entryPoint);
peStream.Position = 0;
var r = new PEReader(peStream);
var h = r.PEHeaders;
var mdReader = r.GetMetadataReader();
}
}
/// <summary>
/// Returns true if the PE file meets all of the pre-conditions to be Open Source Signed.
/// Returns false and logs msbuild errors otherwise.
/// </summary>
private static bool IsPublicSigned(PEReader peReader)
{
if (!peReader.HasMetadata)
{
return false;
}
var mdReader = peReader.GetMetadataReader();
if (!mdReader.IsAssembly)
{
return false;
}
CorHeader header = peReader.PEHeaders.CorHeader;
return (header.Flags & CorFlags.StrongNameSigned) == CorFlags.StrongNameSigned;
}
/// <remarks>
/// Based on https://gist.github.com/nguerrera/72444715c7ea0b40addb
/// </remarks>
public static byte[] GetILBytes(this MethodInfo methodInfo)
{
#if NET45
return methodInfo.GetMethodBody().GetILAsByteArray();
#else
var metadataToken = methodInfo.GetMetadataToken();
using (var stream = File.OpenRead(methodInfo.DeclaringType.GetTypeInfo().Assembly.Location))
using (var peReader = new PEReader(stream))
{
var metadataReader = peReader.GetMetadataReader();
var methodHandle = MetadataTokens.MethodDefinitionHandle(metadataToken);
var methodDefinition = metadataReader.GetMethodDefinition(methodHandle);
var methodBody = peReader.GetMethodBody(methodDefinition.RelativeVirtualAddress);
return methodBody.GetILBytes();
}
#endif
}
public static string GetAssemblyAttributeValue(string assemblyPath, string attributeName)
{
if (!File.Exists(assemblyPath))
{
return null;
}
using (var stream = File.OpenRead(assemblyPath))
using (var peReader = new PEReader(stream))
{
if (!peReader.HasMetadata)
{
return null;
}
var mdReader = peReader.GetMetadataReader();
var attrs = mdReader.GetAssemblyDefinition().GetCustomAttributes()
.Select(ah => mdReader.GetCustomAttribute(ah));
foreach (var attr in attrs)
{
var ctorHandle = attr.Constructor;
if (ctorHandle.Kind != HandleKind.MemberReference)
{
continue;
}
var container = mdReader.GetMemberReference((MemberReferenceHandle)ctorHandle).Parent;
var name = mdReader.GetTypeReference((TypeReferenceHandle)container).Name;
if (!string.Equals(mdReader.GetString(name), attributeName))
{
continue;
}
var arguments = GetFixedStringArguments(mdReader, attr);
if (arguments.Count == 1)
{
return arguments[0];
}
}
}
return null;
}
/// <summary>
/// Given a path to an assembly, identifies files in the same directory
/// that could satisfy the assembly's dependencies. May throw.
/// </summary>
/// <remarks>
/// Dependencies are identified by simply checking the name of an assembly
/// reference against a file name; if they match the file is considered a
/// dependency. Other factors, such as version, culture, public key, etc.,
/// are not considered, and so the returned collection may include items that
/// cannot in fact satisfy the original assembly's dependencies.
/// </remarks>
/// <exception cref="IOException">If the file at <paramref name="filePath"/> does not exist or cannot be accessed.</exception>
/// <exception cref="BadImageFormatException">If the file is not an assembly or is somehow corrupted.</exception>
public static ImmutableArray<string> FindAssemblySet(string filePath)
{
Debug.Assert(filePath != null);
Debug.Assert(PathUtilities.IsAbsolute(filePath));
Queue<string> workList = new Queue<string>();
HashSet<string> assemblySet = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
workList.Enqueue(filePath);
while (workList.Count > 0)
{
string assemblyPath = workList.Dequeue();
if (!assemblySet.Add(assemblyPath))
{
continue;
}
var directory = Path.GetDirectoryName(assemblyPath);
using (var reader = new PEReader(FileUtilities.OpenRead(assemblyPath)))
{
var metadataReader = reader.GetMetadataReader();
var assemblyReferenceHandles = metadataReader.AssemblyReferences;
foreach (var handle in assemblyReferenceHandles)
{
var reference = metadataReader.GetAssemblyReference(handle);
var referenceName = metadataReader.GetString(reference.Name);
string referencePath = Path.Combine(directory, referenceName + ".dll");
if (!assemblySet.Contains(referencePath) &&
File.Exists(referencePath))
{
workList.Enqueue(referencePath);
}
}
}
}
return ImmutableArray.CreateRange(assemblySet);
}
public static IList<IMetadataEmbeddedReference> GetEmbeddedReferences(this PEReader reader)
{
var items = new List<IMetadataEmbeddedReference>();
var mdReader = reader.GetMetadataReader();
foreach (var resourceHandle in mdReader.ManifestResources)
{
var resource = mdReader.GetManifestResource(resourceHandle);
var resourceName = mdReader.GetString(resource.Name);
if (resourceName.StartsWith("AssemblyNeutral/") &&
resourceName.EndsWith(".dll"))
{
var buffer = GetEmbeddedResourceContents(reader, resource);
using (var nestedPeReader = new PEReader(new MemoryStream(buffer)))
{
try
{
// Skip dlls that aren't managed
if (!nestedPeReader.HasMetadata)
{
continue;
}
}
catch (BadImageFormatException)
{
continue;
}
var nestedMdReader = nestedPeReader.GetMetadataReader();
var assemblyDef = nestedMdReader.GetAssemblyDefinition();
var assemblyName = nestedMdReader.GetString(assemblyDef.Name);
items.Add(new EmbeddedMetadataReference(assemblyName, buffer));
}
}
}
return items;
}
private static IList<string> GetReferences(byte[] buffer)
{
var references = new List<string>();
using (var stream = new MemoryStream(buffer))
using (var peReader = new PEReader(stream))
{
var reader = peReader.GetMetadataReader();
foreach (var a in reader.AssemblyReferences)
{
var reference = reader.GetAssemblyReference(a);
var referenceName = reader.GetString(reference.Name);
references.Add(referenceName);
}
return references;
}
}
public static Version GetAssemblyVersion(string assemblyPath)
{
Version result = null;
try
{
using (PEReader peReader = new PEReader(new FileStream(assemblyPath, FileMode.Open, FileAccess.Read, FileShare.Delete | FileShare.Read)))
{
if (peReader.HasMetadata)
{
MetadataReader reader = peReader.GetMetadataReader();
result = reader.GetAssemblyDefinition().Version;
}
}
}
catch (BadImageFormatException)
{
// not a PE
}
return result;
}
// -----------------------------
// ---- PAL layer ends here ----
// -----------------------------
/// <summary>Attempt to load our fields from the metadata of the file, if it's a managed assembly.</summary>
/// <returns>true if the file is a managed assembly; otherwise, false.</returns>
private bool TryLoadManagedAssemblyMetadata()
{
try
{
// Try to load the file using the managed metadata reader
using (FileStream assemblyStream = File.OpenRead(_fileName))
using (PEReader peReader = new PEReader(assemblyStream))
{
if (peReader.HasMetadata)
{
MetadataReader metadataReader = peReader.GetMetadataReader();
if (metadataReader.IsAssembly)
{
LoadManagedAssemblyMetadata(metadataReader);
return true;
}
}
}
}
catch (BadImageFormatException) { }
return false;
}
// -----------------------------
// ---- PAL layer ends here ----
// -----------------------------
/// <summary>Attempt to load our fields from the metadata of the file, if it's a managed assembly.</summary>
/// <returns>true if the file is a managed assembly; otherwise, false.</returns>
private bool TryLoadManagedAssemblyMetadata()
{
try
{
// Try to load the file using the managed metadata reader
using (FileStream assemblyStream = new FileStream(_fileName, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 0x1000, useAsync: false))
using (PEReader peReader = new PEReader(assemblyStream))
{
if (peReader.HasMetadata)
{
MetadataReader metadataReader = peReader.GetMetadataReader();
if (metadataReader.IsAssembly)
{
LoadManagedAssemblyMetadata(metadataReader);
return true;
}
}
}
}
catch (BadImageFormatException) { }
return false;
}
public static Version GetAssemblyVersion(Stream assemblyStream)
{
Version result = null;
try
{
using (PEReader peReader = new PEReader(assemblyStream, PEStreamOptions.LeaveOpen))
{
if (peReader.HasMetadata)
{
MetadataReader reader = peReader.GetMetadataReader();
if (reader.IsAssembly)
{
result = reader.GetAssemblyDefinition().Version;
}
}
}
}
catch (BadImageFormatException)
{
// not a PE
}
return result;
}
internal static bool IsAssemblyServiceable(string assemblyPath)
{
if (!File.Exists(assemblyPath))
{
return false;
}
using (var stream = File.OpenRead(assemblyPath))
using (var peReader = new PEReader(stream))
{
if (!peReader.HasMetadata)
{
return false;
}
var mdReader = peReader.GetMetadataReader();
var attrs = mdReader.GetAssemblyDefinition().GetCustomAttributes()
.Select(ah => mdReader.GetCustomAttribute(ah));
foreach (var attr in attrs)
{
var ctorHandle = attr.Constructor;
if (ctorHandle.Kind != HandleKind.MemberReference)
{
continue;
}
var container = mdReader.GetMemberReference((MemberReferenceHandle)ctorHandle).Parent;
var name = mdReader.GetTypeReference((TypeReferenceHandle)container).Name;
if (!string.Equals(mdReader.GetString(name), "AssemblyMetadataAttribute"))
{
continue;
}
var arguments = GetFixedStringArguments(mdReader, attr);
if (arguments.Count == 2 &&
string.Equals(arguments[0], "Serviceable", StringComparison.OrdinalIgnoreCase) &&
string.Equals(arguments[1], "True", StringComparison.OrdinalIgnoreCase))
{
return true;
}
}
}
return false;
}
/// <summary>
/// Given a path get the CLR runtime version of the file
/// </summary>
/// <param name="path">path to the file</param>
/// <returns>The CLR runtime version or empty if the path does not exist.</returns>
private static string TryGetRuntimeVersion(string path)
{
try
{
using (FileStream stream = File.OpenRead(path))
using (PEReader peReader = new PEReader(stream))
{
return peReader.GetMetadataReader().MetadataVersion;
}
}
catch (Exception)
{
return string.Empty;
}
}
public void CustomDebugEntryPoint_EXE()
{
var source = @"class M { static void Main() { } } class C { static void F<S>() { } }";
var c = CreateCompilationWithMscorlib(source, options: TestOptions.DebugExe);
var f = c.GetMember<MethodSymbol>("C.F");
c.VerifyPdb(@"
<symbols>
<entryPoint declaringType=""C"" methodName=""F"" />
<methods/>
</symbols>", debugEntryPoint: f, options: PdbToXmlOptions.ExcludeScopes | PdbToXmlOptions.ExcludeSequencePoints | PdbToXmlOptions.ExcludeCustomDebugInformation);
var peReader = new PEReader(c.EmitToArray(debugEntryPoint: f));
int peEntryPointToken = peReader.PEHeaders.CorHeader.EntryPointTokenOrRelativeVirtualAddress;
var mdReader = peReader.GetMetadataReader();
var methodDef = mdReader.GetMethodDefinition((MethodDefinitionHandle)MetadataTokens.Handle(peEntryPointToken));
Assert.Equal("Main", mdReader.GetString(methodDef.Name));
}
public void CanReadFromSameMemoryMappedPEReaderInParallel()
{
// See http://roslyn.codeplex.com/workitem/299
//
// This simulates the use case where something is holding on
// to a PEReader and prepared to produce a MetadataReader
// on demand for callers on different threads.
//
using (var stream = GetTemporaryAssemblyLargeEnoughToBeMemoryMapped())
{
Assert.InRange(stream.Length, StreamMemoryBlockProvider.MemoryMapThreshold + 1, int.MaxValue);
for (int i = 0; i < 1000; i++)
{
stream.Position = 0;
using (var peReader = new PEReader(stream, PEStreamOptions.LeaveOpen))
{
Parallel.For(0, 4, _ => { peReader.GetMetadataReader(); });
}
}
}
}
public void Metadata_LazyLoad()
{
var peStream = new MemoryStream(TestResources.Misc.Members);
using (var reader = new PEReader(peStream, PEStreamOptions.LeaveOpen))
{
var md = reader.GetMetadataReader();
var method = md.GetMethodDefinition(MetadataTokens.MethodDefinitionHandle(1));
Assert.Equal("MC1", md.GetString(method.Name));
}
}
private static List<TypeInfo> GetTypeInfoList(string assemblyPath)
{
using (var stream = File.OpenRead(assemblyPath))
using (var peReader = new PEReader(stream))
{
var metadataReader = peReader.GetMetadataReader();
return GetTypeInfoList(metadataReader);
}
}
public void Metadata_EagerLoad()
{
var peStream = new MemoryStream(TestResources.Misc.Members);
using (var reader = new PEReader(peStream, PEStreamOptions.LeaveOpen | PEStreamOptions.PrefetchMetadata))
{
var md = reader.GetMetadataReader();
var method = md.GetMethodDefinition(MetadataTokens.MethodDefinitionHandle(1));
Assert.Equal("MC1", md.GetString(method.Name));
Assert.Throws<InvalidOperationException>(() => reader.GetEntireImage());
Assert.Throws<InvalidOperationException>(() => reader.GetMethodBody(method.RelativeVirtualAddress));
}
}
private AssemblyName GetAssemblyName(string fullPath)
{
using (var stream = PortableShim.File.OpenRead(fullPath))
{
using (var peReader = new PEReader(stream))
{
var reader = peReader.GetMetadataReader();
var assemblyDef = reader.GetAssemblyDefinition();
var name = reader.GetString(assemblyDef.Name);
var cultureName = assemblyDef.Culture.IsNil
? null
: reader.GetString(assemblyDef.Culture);
var publicKeyOrToken = reader.GetBlobContent(assemblyDef.PublicKey);
var hasPublicKey = !publicKeyOrToken.IsEmpty;
if (publicKeyOrToken.IsEmpty)
{
publicKeyOrToken = default(ImmutableArray<byte>);
}
var identity = new AssemblyIdentity(
name: name,
version: assemblyDef.Version,
cultureName: cultureName,
publicKeyOrToken: publicKeyOrToken,
hasPublicKey: hasPublicKey,
isRetargetable: (assemblyDef.Flags & AssemblyFlags.Retargetable) != 0,
contentType: (AssemblyContentType)((int)(assemblyDef.Flags & AssemblyFlags.ContentTypeMask) >> 9));
return new AssemblyName(identity.GetDisplayName());
}
}
}