public bool HasAssemblyAttribute(string name)
{
_assemblyImport.GetAssemblyFromScope(out uint assemblyScope);
IMetaDataImport2 import2 = (IMetaDataImport2)_assemblyImport;
IntPtr valuePtr = IntPtr.Zero;
import2.GetCustomAttributeByName(assemblyScope, name, out valuePtr, out uint valueLen);
return(valueLen != 0);
}
public Assembly(string assemblyName, string frameworkDir, string assemblyDir)
{
// resolved assembly path
string assemblyPath;
string name = assemblyName;
//intermediate objects
object rawMetaDataImportScope = null;
object rawMetaDataAsmImportScope = null;
// save framework and assembly directories for further use
this.frameworkDir = frameworkDir;
this.assemblyDir = assemblyDir;
// First step: try to find the actual file
if (System.IO.Path.GetExtension(name) != ".dll")
{
name += ".dll";
}
if (System.IO.File.Exists(System.IO.Path.Combine(assemblyDir, name)))
{
assemblyPath = System.IO.Path.Combine(assemblyDir, name);
}
else if (System.IO.File.Exists(System.IO.Path.Combine(frameworkDir, name)))
{
assemblyPath = System.IO.Path.Combine(frameworkDir, name);
}
else
{
assemblyPath = System.IO.Path.Combine(".", name);
}
// ??? At this point, we should try the GAC instead ???
// open the assembly to retrieve the two COM interfaces to access data
try
{
dispenser.OpenScope
(assemblyPath, 0x10, ref gMetaDataImportGuid, out rawMetaDataImportScope);
dispenser.OpenScope
(assemblyPath, 0x10, ref gMetaDataAsmImportGuid, out rawMetaDataAsmImportScope);
}
catch
{
throw new System.ArgumentException("Cannot open " + assemblyPath + " or not a valid assembly.");
}
// let's convert the intermediate objects into the expected COM interfaces
this.importIntf = (IMetaDataImport2)rawMetaDataImportScope;
this.asmImportIntf = (IMetaDataAssemblyImport)rawMetaDataAsmImportScope;
// now that we have the COM interfaces OK, we can retrieve the assembly
// information
this.InitInformation();
}
public bool HasAssemblyAttribute(string name)
{
uint num;
this._assemblyImport.GetAssemblyFromScope(out num);
IMetaDataImport2 import = (IMetaDataImport2)this._assemblyImport;
IntPtr zero = IntPtr.Zero;
uint pcbData = 0;
import.GetCustomAttributeByName(num, name.ToCharArray(), out zero, out pcbData);
return(pcbData != 0);
}
// Token: 0x06000E18 RID: 3608 RVA: 0x00037CB0 File Offset: 0x00035EB0
public bool HasAssemblyAttribute(string name)
{
uint mdTokenObj;
this._assemblyImport.GetAssemblyFromScope(out mdTokenObj);
IMetaDataImport2 metaDataImport = (IMetaDataImport2)this._assemblyImport;
IntPtr zero = IntPtr.Zero;
uint num = 0u;
metaDataImport.GetCustomAttributeByName(mdTokenObj, name, out zero, out num);
return(num > 0u);
}
/// <summary>
/// Get the framework name from the assembly.
/// </summary>
private FrameworkName GetFrameworkName()
{
FrameworkName frameworkAttribute = null;
try
{
IMetaDataImport2 import2 = (IMetaDataImport2)_assemblyImport;
IntPtr data = IntPtr.Zero;
UInt32 valueLen = 0;
string frameworkNameAttribute = null;
UInt32 assemblyScope;
_assemblyImport.GetAssemblyFromScope(out assemblyScope);
int hr = import2.GetCustomAttributeByName(assemblyScope, s_targetFrameworkAttribute, out data, out valueLen);
// get the AssemblyTitle
if (hr == NativeMethodsShared.S_OK)
{
// if an AssemblyTitle exists, parse the contents of the blob
if (NativeMethods.TryReadMetadataString(_sourceFile, data, valueLen, out frameworkNameAttribute))
{
if (!String.IsNullOrEmpty(frameworkNameAttribute))
{
frameworkAttribute = new FrameworkName(frameworkNameAttribute);
}
}
}
}
catch (Exception e)
{
if (ExceptionHandling.IsCriticalException(e))
{
throw;
}
}
return(frameworkAttribute);
}
public static unsafe bool GetGenericParamNumAndAttrs(IMetaDataImport2 mdi2, uint token, out ushort number, out GenericParamAttributes attrs) {
number = ushort.MaxValue;
attrs = 0;
if (mdi2 == null)
return false;
uint ulParamSeq, dwParamFlags;
int hr = mdi2.GetGenericParamProps(token, new IntPtr(&ulParamSeq), new IntPtr(&dwParamFlags), IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero);
if (hr != 0)
return false;
number = (ushort)ulParamSeq;
attrs = (GenericParamAttributes)dwParamFlags;
return true;
}
public static unsafe string GetGenericParamName(IMetaDataImport2 mdi2, uint token) {
if (mdi2 == null)
return null;
char[] nameBuf = null;
uint chName;
int hr = mdi2.GetGenericParamProps(token, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, 0, new IntPtr(&chName));
if (hr >= 0 && chName != 0) {
nameBuf = new char[chName];
fixed (char* p = &nameBuf[0])
hr = mdi2.GetGenericParamProps(token, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, new IntPtr(p), (uint)nameBuf.Length, new IntPtr(&chName));
}
if (hr < 0)
return null;
if (chName <= 1)
return string.Empty;
return new string(nameBuf, 0, (int)chName - 1);
}
public unsafe static uint GetGenericParamOwner(IMetaDataImport2 mdi2, uint token) {
if (mdi2 == null)
return 0;
uint ownerToken;
int hr = mdi2.GetGenericParamProps(token, IntPtr.Zero, IntPtr.Zero, new IntPtr(&ownerToken), IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero);
if (hr != 0)
return 0;
var ownerMdToken = new MDToken(ownerToken);
return ownerMdToken.Table == Table.TypeDef || ownerMdToken.Table == Table.Method ? ownerMdToken.Raw : 0;
}
public unsafe static string GetModuleVersionString(IMetaDataImport2 mdi2) {
if (mdi2 == null)
return null;
char[] nameBuf = null;
uint ccBufSize = 0;
int hr = mdi2.GetVersionString(IntPtr.Zero, 0, out ccBufSize);
if (hr >= 0 && ccBufSize != 0) {
nameBuf = new char[ccBufSize];
fixed (char* p = &nameBuf[0])
hr = mdi2.GetVersionString(new IntPtr(p), ccBufSize, out ccBufSize);
}
if (hr < 0)
return null;
if (ccBufSize <= 1)
return string.Empty;
return new string(nameBuf, 0, (int)ccBufSize - 1);
}
public static Machine? GetModuleMachineAndPEKind(IMetaDataImport2 mdi2, out CorPEKind peKind) {
peKind = 0;
if (mdi2 == null)
return null;
uint dwPEKind, dwMachine;
int hr = mdi2.GetPEKind(out dwPEKind, out dwMachine);
if (hr != 0)
return null;
peKind = (CorPEKind)dwPEKind;
return (Machine)dwMachine;
}
public unsafe static uint[] GetGenericParamConstraintTokens(IMetaDataImport2 mdi2, uint token) {
if (mdi2 == null)
return new uint[0];
IntPtr iter = IntPtr.Zero;
try {
uint cGenericParamConstraints;
int hr = mdi2.EnumGenericParamConstraints(ref iter, token, IntPtr.Zero, 0, out cGenericParamConstraints);
if (hr < 0)
return new uint[0];
uint ulCount = 0;
hr = mdi2.CountEnum(iter, ref ulCount);
if (hr < 0 || ulCount == 0)
return new uint[0];
hr = mdi2.ResetEnum(iter, 0);
if (hr < 0)
return new uint[0];
uint[] gpcTokens = new uint[ulCount];
fixed (uint* p = &gpcTokens[0])
hr = mdi2.EnumGenericParamConstraints(ref iter, token, new IntPtr(p), (uint)gpcTokens.Length, out cGenericParamConstraints);
if (hr < 0)
return new uint[0];
return gpcTokens;
}
finally {
if (iter != IntPtr.Zero)
mdi2.CloseEnum(iter);
}
}
public static void ReleaseContext()
{
importIntf = stack.Pop();
}
public static void SetContext(IMetaDataImport2 intf)
{
stack.Push(importIntf);
importIntf = intf;
}
public unsafe static uint GetGenericParamConstraintOwnerRid(IMetaDataImport2 mdi2, uint token) {
if (mdi2 == null)
return 0;
uint ownerToken;
int hr = mdi2.GetGenericParamConstraintProps(token, new IntPtr(&ownerToken), IntPtr.Zero);
if (hr != 0)
return 0;
var ownerMdToken = new MDToken(ownerToken);
return ownerMdToken.Table == Table.GenericParam ? ownerMdToken.Rid : 0;
}
public static void Init(Assembly asm)
{
mainAsm = asm;
importIntf = asm.importIntf;
}
public unsafe static uint GetGenericParamConstraintTypeToken(IMetaDataImport2 mdi2, uint token) {
if (mdi2 == null)
return 0;
uint tkConstraintType;
int hr = mdi2.GetGenericParamConstraintProps(token, IntPtr.Zero, new IntPtr(&tkConstraintType));
if (hr != 0)
return 0;
return tkConstraintType;
}
public unsafe static byte[] GetMethodSpecProps(IMetaDataImport2 mdi2, uint token, out uint method) {
method = 0;
if (mdi2 == null)
return null;
IntPtr pvSigBlob;
uint cbSigBlob;
int hr = mdi2.GetMethodSpecProps(token, out method, out pvSigBlob, out cbSigBlob);
if (hr != 0 || pvSigBlob == IntPtr.Zero)
return null;
byte[] sig = new byte[cbSigBlob];
Marshal.Copy(pvSigBlob, sig, 0, sig.Length);
return sig;
}
/// <summary>
/// Get the framework name from the assembly.
/// </summary>
private FrameworkName GetFrameworkName()
{
// Disabling use of System.Reflection in case of MONO, because
// Assembly.GetCustomAttributes* for an attribute which belongs
// to an assembly that mono cannot find, causes a crash!
// Instead, opt for using PEReader and friends to get that info
#if FEATURE_ASSEMBLY_LOADFROM && !MONO
if (!NativeMethodsShared.IsWindows)
{
if (String.Equals(Environment.GetEnvironmentVariable("MONO29679"), "1", StringComparison.OrdinalIgnoreCase))
{
// Getting custom attributes in CoreFx contract assemblies is busted
// https://bugzilla.xamarin.com/show_bug.cgi?id=29679
return(null);
}
CustomAttributeData attr = null;
foreach (CustomAttributeData a in _assembly.GetCustomAttributesData())
{
try
{
if (a.AttributeType.Equals(typeof(TargetFrameworkAttribute)))
{
attr = a;
break;
}
}
catch
{
}
}
string name = null;
if (attr != null)
{
name = (string)attr.ConstructorArguments[0].Value;
}
return(name == null ? null : new FrameworkName(name));
}
FrameworkName frameworkAttribute = null;
try
{
IMetaDataImport2 import2 = (IMetaDataImport2)_assemblyImport;
IntPtr data = IntPtr.Zero;
UInt32 valueLen = 0;
string frameworkNameAttribute = null;
UInt32 assemblyScope;
_assemblyImport.GetAssemblyFromScope(out assemblyScope);
int hr = import2.GetCustomAttributeByName(assemblyScope, s_targetFrameworkAttribute, out data, out valueLen);
// get the AssemblyTitle
if (hr == NativeMethodsShared.S_OK)
{
// if an AssemblyTitle exists, parse the contents of the blob
if (NativeMethods.TryReadMetadataString(_sourceFile, data, valueLen, out frameworkNameAttribute))
{
if (!String.IsNullOrEmpty(frameworkNameAttribute))
{
frameworkAttribute = new FrameworkName(frameworkNameAttribute);
}
}
}
}
catch (Exception e)
{
if (ExceptionHandling.IsCriticalException(e))
{
throw;
}
}
return(frameworkAttribute);
#else
CorePopulateMetadata();
return(_frameworkName);
#endif
}
/// <summary>
/// Get the framework name from the assembly.
/// </summary>
private FrameworkName GetFrameworkName()
{
// Disabling use of System.Reflection in case of MONO, because
// Assembly.GetCustomAttributes* for an attribute which belongs
// to an assembly that mono cannot find, causes a crash!
// Instead, opt for using PEReader and friends to get that info
#if FEATURE_ASSEMBLY_LOADFROM && !MONO
if (!NativeMethodsShared.IsWindows)
{
if (String.Equals(Environment.GetEnvironmentVariable("MONO29679"), "1", StringComparison.OrdinalIgnoreCase))
{
// Getting custom attributes in CoreFx contract assemblies is busted
// https://bugzilla.xamarin.com/show_bug.cgi?id=29679
return(null);
}
CustomAttributeData attr = null;
foreach (CustomAttributeData a in _assembly.GetCustomAttributesData())
{
try
{
if (a.AttributeType.Equals(typeof(TargetFrameworkAttribute)))
{
attr = a;
break;
}
}
catch
{
}
}
string name = null;
if (attr != null)
{
name = (string)attr.ConstructorArguments[0].Value;
}
return(name == null ? null : new FrameworkName(name));
}
FrameworkName frameworkAttribute = null;
try
{
IMetaDataImport2 import2 = (IMetaDataImport2)_assemblyImport;
IntPtr data = IntPtr.Zero;
UInt32 valueLen = 0;
string frameworkNameAttribute = null;
UInt32 assemblyScope;
_assemblyImport.GetAssemblyFromScope(out assemblyScope);
int hr = import2.GetCustomAttributeByName(assemblyScope, s_targetFrameworkAttribute, out data, out valueLen);
// get the AssemblyTitle
if (hr == NativeMethodsShared.S_OK)
{
// if an AssemblyTitle exists, parse the contents of the blob
if (NativeMethods.TryReadMetadataString(_sourceFile, data, valueLen, out frameworkNameAttribute))
{
if (!String.IsNullOrEmpty(frameworkNameAttribute))
{
frameworkAttribute = new FrameworkName(frameworkNameAttribute);
}
}
}
}
catch (Exception e)
{
if (ExceptionHandling.IsCriticalException(e))
{
throw;
}
}
return(frameworkAttribute);
#else
using (var stream = File.OpenRead(_sourceFile))
using (var peFile = new PEReader(stream))
{
var metadataReader = peFile.GetMetadataReader();
var attrs = metadataReader.GetAssemblyDefinition().GetCustomAttributes()
.Select(ah => metadataReader.GetCustomAttribute(ah));
foreach (var attr in attrs)
{
var ctorHandle = attr.Constructor;
if (ctorHandle.Kind != HandleKind.MemberReference)
{
continue;
}
var container = metadataReader.GetMemberReference((MemberReferenceHandle)ctorHandle).Parent;
var name = metadataReader.GetTypeReference((TypeReferenceHandle)container).Name;
if (!string.Equals(metadataReader.GetString(name), "TargetFrameworkAttribute"))
{
continue;
}
var arguments = GetFixedStringArguments(metadataReader, attr);
if (arguments.Count == 1)
{
return(new FrameworkName(arguments[0]));
}
}
}
return(null);
#endif
}
