internal static ByteReader FromBlob(byte[] blobHeap, int blob) { ByteReader br = new ByteReader(blobHeap, blob, 4); int length = br.ReadCompressedInt(); br.end = br.pos + length; return br; }
internal static ByteReader FromBlob(byte[] blobHeap, int blob) { ByteReader br = new ByteReader(blobHeap, blob, 4); int length = br.ReadCompressedInt(); br.end = br.pos + length; return(br); }
bool DecodeDeclSecurity(StringBuilder sb, IList<CustomAttributeData> list, int level) { try { sb.Append(" = {"); bool first = true; foreach (var sec in list) { if (!first) { sb.Append(','); sb.AppendLine(); sb.Append(' ', level + 14); } first = false; string typeName = sec.Constructor.DeclaringType.AssemblyQualifiedName; if (typeName.EndsWith(", mscorlib", StringComparison.Ordinal)) { typeName = typeName.Substring(0, typeName.Length - 10); } AppendTypeName(sb, sec.Constructor.DeclaringType, typeName, compat != CompatLevel.None); sb.Append(" = {"); byte[] blob = sec.__GetBlob(); // LAMESPEC the count of named arguments is a compressed integer (instead of UInt16 as NumNamed in custom attributes) var br = new ByteReader(blob, 0, blob.Length); int count = br.ReadCompressedInt(); ReadNamedArguments(sb, br, count, 0, compat != CompatLevel.None && count > 1); sb.Append('}'); } sb.Append('}'); return true; } catch (IKVM.Reflection.BadImageFormatException) { return false; } }
private static Type ReadTypeDefOrRefEncoded(ModuleReader module, ByteReader br, IGenericContext context) { int encoded = br.ReadCompressedInt(); switch (encoded & 3) { case 0: return module.ResolveType((TypeDefTable.Index << 24) + (encoded >> 2), null, null); case 1: return module.ResolveType((TypeRefTable.Index << 24) + (encoded >> 2), null, null); case 2: return module.ResolveType((TypeSpecTable.Index << 24) + (encoded >> 2), context); default: throw new BadImageFormatException(); } }
protected static void SkipCustomModifiers(ByteReader br) { byte b = br.PeekByte(); while (IsCustomModifier(b)) { br.ReadByte(); br.ReadCompressedInt(); b = br.PeekByte(); } }
internal static void ReadLocalVarSig(ModuleReader module, ByteReader br, IGenericContext context, List<LocalVariableInfo> list) { if (br.Length < 2 || br.ReadByte() != LOCAL_SIG) { throw new BadImageFormatException("Invalid local variable signature"); } int count = br.ReadCompressedInt(); for (int i = 0; i < count; i++) { if (br.PeekByte() == ELEMENT_TYPE_TYPEDBYREF) { br.ReadByte(); list.Add(new LocalVariableInfo(i, module.universe.System_TypedReference, false)); } else { SkipCustomModifiers(br); bool pinned = false; if (br.PeekByte() == ELEMENT_TYPE_PINNED) { br.ReadByte(); pinned = true; } SkipCustomModifiers(br); Type type = ReadTypeOrByRef(module, br, context); list.Add(new LocalVariableInfo(i, type, pinned)); } } }
// see ECMA 335 CLI spec June 2006 section 23.2.12 for this production protected static Type ReadType(ModuleReader module, ByteReader br, IGenericContext context) { CustomModifiers mods; switch (br.ReadByte()) { case ELEMENT_TYPE_CLASS: case ELEMENT_TYPE_VALUETYPE: return ReadTypeDefOrRefEncoded(module, br, context); case ELEMENT_TYPE_BOOLEAN: return module.universe.System_Boolean; case ELEMENT_TYPE_CHAR: return module.universe.System_Char; case ELEMENT_TYPE_I1: return module.universe.System_SByte; case ELEMENT_TYPE_U1: return module.universe.System_Byte; case ELEMENT_TYPE_I2: return module.universe.System_Int16; case ELEMENT_TYPE_U2: return module.universe.System_UInt16; case ELEMENT_TYPE_I4: return module.universe.System_Int32; case ELEMENT_TYPE_U4: return module.universe.System_UInt32; case ELEMENT_TYPE_I8: return module.universe.System_Int64; case ELEMENT_TYPE_U8: return module.universe.System_UInt64; case ELEMENT_TYPE_R4: return module.universe.System_Single; case ELEMENT_TYPE_R8: return module.universe.System_Double; case ELEMENT_TYPE_I: return module.universe.System_IntPtr; case ELEMENT_TYPE_U: return module.universe.System_UIntPtr; case ELEMENT_TYPE_STRING: return module.universe.System_String; case ELEMENT_TYPE_OBJECT: return module.universe.System_Object; case ELEMENT_TYPE_VAR: return context.GetGenericTypeArgument(br.ReadCompressedInt()); case ELEMENT_TYPE_MVAR: return context.GetGenericMethodArgument(br.ReadCompressedInt()); case ELEMENT_TYPE_GENERICINST: return ReadGenericInst(module, br, context); case ELEMENT_TYPE_SZARRAY: mods = ReadCustomModifiers(module, br, context); return ReadType(module, br, context).__MakeArrayType(mods.required, mods.optional); case ELEMENT_TYPE_ARRAY: mods = ReadCustomModifiers(module, br, context); return ReadType(module, br, context).__MakeArrayType(ReadArrayShape(br), mods.required, mods.optional); case ELEMENT_TYPE_PTR: mods = ReadCustomModifiers(module, br, context); return ReadTypeOrVoid(module, br, context).__MakePointerType(mods.required, mods.optional); case ELEMENT_TYPE_FNPTR: return ReadFunctionPointer(module, br, context); default: throw new BadImageFormatException(); } }
internal static __StandAloneMethodSig ReadStandAloneMethodSig(ModuleReader module, ByteReader br, IGenericContext context) { CallingConventions callingConvention = 0; System.Runtime.InteropServices.CallingConvention unmanagedCallingConvention = 0; bool unmanaged; byte flags = br.ReadByte(); switch (flags & 7) { case DEFAULT: callingConvention = CallingConventions.Standard; unmanaged = false; break; case 0x01: // C unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.Cdecl; unmanaged = true; break; case 0x02: // STDCALL unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.StdCall; unmanaged = true; break; case 0x03: // THISCALL unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.ThisCall; unmanaged = true; break; case 0x04: // FASTCALL unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.FastCall; unmanaged = true; break; case VARARG: callingConvention = CallingConventions.VarArgs; unmanaged = false; break; default: throw new BadImageFormatException(); } if ((flags & HASTHIS) != 0) { callingConvention |= CallingConventions.HasThis; } if ((flags & EXPLICITTHIS) != 0) { callingConvention |= CallingConventions.ExplicitThis; } if ((flags & GENERIC) != 0) { throw new BadImageFormatException(); } int paramCount = br.ReadCompressedInt(); SkipCustomModifiers(br); Type returnType = ReadRetType(module, br, context); List<Type> parameterTypes = new List<Type>(); List<Type> optionalParameterTypes = new List<Type>(); List<Type> curr = parameterTypes; for (int i = 0; i < paramCount; i++) { if (br.PeekByte() == SENTINEL) { br.ReadByte(); curr = optionalParameterTypes; } SkipCustomModifiers(br); curr.Add(ReadParam(module, br, context)); } return new __StandAloneMethodSig(unmanaged, unmanagedCallingConvention, callingConvention, returnType, parameterTypes.ToArray(), optionalParameterTypes.ToArray()); }
private static int[] ReadArrayBounds(ByteReader br) { int num = br.ReadCompressedUInt(); if (num == 0) { return null; } int[] arr = new int[num]; for (int i = 0; i < num; i++) { arr[i] = br.ReadCompressedInt(); } return arr; }
private static string ReadString(ByteReader br) { return Encoding.UTF8.GetString(br.ReadBytes(br.ReadCompressedInt())); }
internal static PropertySignature ReadSig(ModuleReader module, ByteReader br, IGenericContext context) { byte flags = br.ReadByte(); if ((flags & PROPERTY) == 0) { throw new BadImageFormatException(); } CallingConventions callingConvention = CallingConventions.Standard; if ((flags & HASTHIS) != 0) { callingConvention |= CallingConventions.HasThis; } if ((flags & EXPLICITTHIS) != 0) { callingConvention |= CallingConventions.ExplicitThis; } Type returnType; Type[] parameterTypes; int paramCount = br.ReadCompressedInt(); CustomModifiers[] mods = null; PackedCustomModifiers.Pack(ref mods, 0, CustomModifiers.Read(module, br, context), paramCount + 1); returnType = ReadRetType(module, br, context); parameterTypes = new Type[paramCount]; for (int i = 0; i < parameterTypes.Length; i++) { PackedCustomModifiers.Pack(ref mods, i + 1, CustomModifiers.Read(module, br, context), paramCount + 1); parameterTypes[i] = ReadParam(module, br, context); } return new PropertySignature(callingConvention, returnType, parameterTypes, PackedCustomModifiers.Wrap(mods)); }
internal static PropertySignature ReadSig(ModuleReader module, ByteReader br, IGenericContext context) { byte flags = br.ReadByte(); if ((flags & PROPERTY) == 0) { throw new BadImageFormatException(); } CallingConventions callingConvention = CallingConventions.Standard; if ((flags & HASTHIS) != 0) { callingConvention |= CallingConventions.HasThis; } if ((flags & EXPLICITTHIS) != 0) { callingConvention |= CallingConventions.ExplicitThis; } Type returnType; Type[] returnTypeRequiredCustomModifiers; Type[] returnTypeOptionalCustomModifiers; Type[] parameterTypes; Type[][] parameterRequiredCustomModifiers; Type[][] parameterOptionalCustomModifiers; int paramCount = br.ReadCompressedInt(); ReadCustomModifiers(module, br, context, out returnTypeRequiredCustomModifiers, out returnTypeOptionalCustomModifiers); returnType = ReadRetType(module, br, context); parameterTypes = new Type[paramCount]; parameterRequiredCustomModifiers = null; parameterOptionalCustomModifiers = null; for (int i = 0; i < parameterTypes.Length; i++) { if (IsCustomModifier(br.PeekByte())) { if (parameterOptionalCustomModifiers == null) { parameterOptionalCustomModifiers = new Type[parameterTypes.Length][]; parameterRequiredCustomModifiers = new Type[parameterTypes.Length][]; } ReadCustomModifiers(module, br, context, out parameterRequiredCustomModifiers[i], out parameterOptionalCustomModifiers[i]); } parameterTypes[i] = ReadParam(module, br, context); } return new PropertySignature(callingConvention, returnType, returnTypeOptionalCustomModifiers, returnTypeRequiredCustomModifiers, parameterTypes, parameterOptionalCustomModifiers, parameterRequiredCustomModifiers); }
private static Type ReadGenericInst(ModuleReader module, ByteReader br, IGenericContext context) { Type type; switch (br.ReadByte()) { case ELEMENT_TYPE_CLASS: type = ReadTypeDefOrRefEncoded(module, br, context).MarkNotValueType(); break; case ELEMENT_TYPE_VALUETYPE: type = ReadTypeDefOrRefEncoded(module, br, context).MarkValueType(); break; default: throw new BadImageFormatException(); } if (!type.__IsMissing && !type.IsGenericTypeDefinition) { throw new BadImageFormatException(); } int genArgCount = br.ReadCompressedInt(); Type[] args = new Type[genArgCount]; CustomModifiers[] mods = null; for (int i = 0; i < genArgCount; i++) { // LAMESPEC the Type production (23.2.12) doesn't include CustomMod* for genericinst, but C++ uses it, the verifier allows it and ildasm also supports it CustomModifiers cm = CustomModifiers.Read(module, br, context); if (!cm.IsEmpty) { if (mods == null) { mods = new CustomModifiers[genArgCount]; } mods[i] = cm; } args[i] = ReadType(module, br, context); } return GenericTypeInstance.Make(type, args, mods); }
// this reads just the optional parameter types, from a MethodRefSig internal static Type[] ReadOptionalParameterTypes(ModuleReader module, ByteReader br, IGenericContext context, out CustomModifiers[] customModifiers) { br.ReadByte(); int paramCount = br.ReadCompressedInt(); CustomModifiers.Skip(br); ReadRetType(module, br, context); for (int i = 0; i < paramCount; i++) { if (br.PeekByte() == SENTINEL) { br.ReadByte(); Type[] types = new Type[paramCount - i]; customModifiers = new CustomModifiers[types.Length]; for (int j = 0; j < types.Length; j++) { customModifiers[j] = CustomModifiers.Read(module, br, context); types[j] = ReadType(module, br, context); } return types; } CustomModifiers.Skip(br); ReadType(module, br, context); } customModifiers = Empty<CustomModifiers>.Array; return Type.EmptyTypes; }
// this reads just the optional parameter types, from a MethodRefSig internal static Type[] ReadOptionalParameterTypes(ModuleReader module, ByteReader br) { br.ReadByte(); int paramCount = br.ReadCompressedInt(); SkipCustomModifiers(br); ReadRetType(module, br, null); for (int i = 0; i < paramCount; i++) { if (br.PeekByte() == SENTINEL) { br.ReadByte(); Type[] types = new Type[paramCount - i]; for (int j = 0; j < types.Length; j++) { SkipCustomModifiers(br); types[j] = ReadType(module, br, null); } return types; } SkipCustomModifiers(br); ReadType(module, br, null); } return Type.EmptyTypes; }
private static Type ReadGenericInst(ModuleReader module, ByteReader br, IGenericContext context) { switch (br.ReadByte()) { case ELEMENT_TYPE_CLASS: case ELEMENT_TYPE_VALUETYPE: break; default: throw new BadImageFormatException(); } Type type = ReadTypeDefOrRefEncoded(module, br, context); if (!type.__IsMissing && !type.IsGenericTypeDefinition) { throw new BadImageFormatException(); } int genArgCount = br.ReadCompressedInt(); Type[] args = new Type[genArgCount]; Type[][] reqmod = null; Type[][] optmod = null; for (int i = 0; i < genArgCount; i++) { // LAMESPEC the Type production (23.2.12) doesn't include CustomMod* for genericinst, but C++ uses it, the verifier allows it and ildasm also supports it CustomModifiers mods = ReadCustomModifiers(module, br, context); if (mods.required != null || mods.optional != null) { if (reqmod == null) { reqmod = new Type[genArgCount][]; optmod = new Type[genArgCount][]; } reqmod[i] = mods.required; optmod[i] = mods.optional; } args[i] = ReadType(module, br, context); } return GenericTypeInstance.Make(type, args, reqmod, optmod); }
internal static void ReadDeclarativeSecurity(Assembly asm, List<CustomAttributeData> list, int action, ByteReader br) { Universe u = asm.universe; if (br.PeekByte() == '.') { br.ReadByte(); int count = br.ReadCompressedInt(); for (int j = 0; j < count; j++) { Type type = ReadType(asm, br); ConstructorInfo constructor; if (type == u.System_Security_Permissions_HostProtectionAttribute && action == (int)System.Security.Permissions.SecurityAction.LinkDemand) { constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, Type.EmptyTypes, null); } else { constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { u.System_Security_Permissions_SecurityAction }, null); } // LAMESPEC there is an additional length here (probably of the named argument list) ByteReader slice = br.Slice(br.ReadCompressedInt()); // LAMESPEC the count of named arguments is a compressed integer (instead of UInt16 as NumNamed in custom attributes) list.Add(new CustomAttributeData(constructor, action, ReadNamedArguments(asm, slice, slice.ReadCompressedInt(), type))); } } else { // .NET 1.x format (xml) char[] buf = new char[br.Length / 2]; for (int i = 0; i < buf.Length; i++) { buf[i] = br.ReadChar(); } string xml = new String(buf); ConstructorInfo constructor = u.System_Security_Permissions_PermissionSetAttribute.GetConstructor(new Type[] { u.System_Security_Permissions_SecurityAction }); List<CustomAttributeNamedArgument> args = new List<CustomAttributeNamedArgument>(); args.Add(new CustomAttributeNamedArgument(u.System_Security_Permissions_PermissionSetAttribute.GetProperty("XML"), new CustomAttributeTypedArgument(u.System_String, xml))); list.Add(new CustomAttributeData(constructor, action, args)); } }
internal static Type[] ReadMethodSpec(ModuleReader module, ByteReader br, IGenericContext context) { if (br.ReadByte() != GENERICINST) { throw new BadImageFormatException(); } Type[] args = new Type[br.ReadCompressedInt()]; for (int i = 0; i < args.Length; i++) { args[i] = ReadType(module, br, context); } return args; }
private static int ReadArrayShape(ByteReader br) { int rank = br.ReadCompressedInt(); int numSizes = br.ReadCompressedInt(); for (int i = 0; i < numSizes; i++) { br.ReadCompressedInt(); } int numLoBounds = br.ReadCompressedInt(); for (int i = 0; i < numLoBounds; i++) { br.ReadCompressedInt(); } return rank; }
internal static MethodSignature ReadSig(ModuleReader module, ByteReader br, IGenericContext context) { CallingConventions callingConvention; int genericParamCount; Type returnType; Type[] parameterTypes; byte flags = br.ReadByte(); switch (flags & 7) { case DEFAULT: callingConvention = CallingConventions.Standard; break; case VARARG: callingConvention = CallingConventions.VarArgs; break; default: throw new BadImageFormatException(); } if ((flags & HASTHIS) != 0) { callingConvention |= CallingConventions.HasThis; } if ((flags & EXPLICITTHIS) != 0) { callingConvention |= CallingConventions.ExplicitThis; } genericParamCount = 0; if ((flags & GENERIC) != 0) { genericParamCount = br.ReadCompressedInt(); context = new UnboundGenericMethodContext(context); } int paramCount = br.ReadCompressedInt(); Type[][][] modifiers = null; Type[] optionalCustomModifiers; Type[] requiredCustomModifiers; ReadCustomModifiers(module, br, context, out requiredCustomModifiers, out optionalCustomModifiers); returnType = ReadRetType(module, br, context); parameterTypes = new Type[paramCount]; PackedCustomModifiers.SetModifiers(ref modifiers, 0, 0, optionalCustomModifiers, paramCount + 1); PackedCustomModifiers.SetModifiers(ref modifiers, 0, 1, requiredCustomModifiers, paramCount + 1); for (int i = 0; i < parameterTypes.Length; i++) { if ((callingConvention & CallingConventions.VarArgs) != 0 && br.PeekByte() == SENTINEL) { Array.Resize(ref parameterTypes, i); if (modifiers != null) { Array.Resize(ref modifiers, i + 1); } break; } ReadCustomModifiers(module, br, context, out requiredCustomModifiers, out optionalCustomModifiers); PackedCustomModifiers.SetModifiers(ref modifiers, i + 1, 0, optionalCustomModifiers, paramCount + 1); PackedCustomModifiers.SetModifiers(ref modifiers, i + 1, 1, requiredCustomModifiers, paramCount + 1); parameterTypes[i] = ReadParam(module, br, context); } return new MethodSignature(returnType, parameterTypes, modifiers, callingConvention, genericParamCount); }
internal static void ReadDeclarativeSecurity(Assembly asm, List<CustomAttributeData> list, int action, ByteReader br) { Universe u = asm.universe; if (br.PeekByte() == '.') { br.ReadByte(); int count = br.ReadCompressedInt(); for (int j = 0; j < count; j++) { Type type = ReadType(asm, br); ConstructorInfo constructor = type.GetPseudoCustomAttributeConstructor(u.System_Security_Permissions_SecurityAction); // LAMESPEC there is an additional length here (probably of the named argument list) byte[] blob = br.ReadBytes(br.ReadCompressedInt()); list.Add(new CustomAttributeData(asm, constructor, action, blob)); } } else { // .NET 1.x format (xml) char[] buf = new char[br.Length / 2]; for (int i = 0; i < buf.Length; i++) { buf[i] = br.ReadChar(); } string xml = new String(buf); ConstructorInfo constructor = u.System_Security_Permissions_PermissionSetAttribute.GetPseudoCustomAttributeConstructor(u.System_Security_Permissions_SecurityAction); List<CustomAttributeNamedArgument> args = new List<CustomAttributeNamedArgument>(); args.Add(new CustomAttributeNamedArgument(GetProperty(u.System_Security_Permissions_PermissionSetAttribute, "XML", u.System_String), new CustomAttributeTypedArgument(u.System_String, xml))); list.Add(new CustomAttributeData(asm.ManifestModule, constructor, new object[] { action }, args)); } }