/// <summary>
/// Decode byte array to parameter list in one method call.
/// Calling this method assumes that decoding the stub doesn't depends on any parameter.
/// Only for decoding the stub data from the client side.
/// </summary>
/// <param name="runtimeTargetPlatform">Runtime platform, x86 or amd64.</param>
/// <param name="typeFormatString">Type format string generated by MIDL.</param>
/// <param name="exprEvalRoutines">ExprEvalRoutines generated by MIDL if exists.</param>
/// <param name="procFormatString">Proc format string generated by MIDL.</param>
/// <param name="procFormatStringOffset">Offset of the procedure in procFormatString.</param>
/// <param name="isClient">Is client side.</param>
/// <param name="bytesToDecode">Bytes to decode.</param>
/// <returns>The decoded parameter list.</returns>
/// <exception cref="ArgumentNullException">
/// Thrown when typeFormatString is null.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Thrown when runtimeTargetPlatform doesn't match current platform at runtime.
/// </exception>
public static RpceInt3264Collection ToParamList(
RpceStubTargetPlatform runtimeTargetPlatform,
byte[] typeFormatString,
RpceStubExprEval[] exprEvalRoutines,
byte[] procFormatString,
int procFormatStringOffset,
bool isClient,
byte[] bytesToDecode)
{
int offset = procFormatStringOffset;
RpceProcedureHeaderDescriptor procHeaderInfo
= RpceStubHelper.ParseProcedureHeaderDescriptor(procFormatString, ref offset);
return(ToParamList(runtimeTargetPlatform, typeFormatString, exprEvalRoutines, procFormatString,
procFormatStringOffset, isClient, bytesToDecode, new Int3264[procHeaderInfo.NumberOfParams]));
}
private Int3264[] NdrParametersUnmarshall(
byte[] procFormatString,
int offset,
bool isClient,
params Int3264[] parameters)
{
if (procFormatString == null)
{
throw new ArgumentNullException("procFormatString");
}
RpceProcedureHeaderDescriptor procHeaderInfo
= RpceStubHelper.ParseProcedureHeaderDescriptor(procFormatString, ref offset);
if (procHeaderInfo.NumberOfParams != parameters.Length)
{
throw new InvalidOperationException("Number of parameters doesn't match expectation.");
}
SaveParametersIntoStack(procFormatString, offset, procHeaderInfo.StackSize, parameters);
if ((procHeaderInfo.ExtensionFlags2 & RpceInterpreterOptFlags2.HasConformanceRange) != 0)
{
SetCorrDespIncrement(RANGED_NDR_CORR_EXTENSION_SIZE);
}
else
{
SetCorrDespIncrement(NDR_CORR_EXTENSION_SIZE);
}
NdrConvertIfNecessary(procFormatString, offset, procHeaderInfo.NumberOfParams, isClient);
List <Int3264> parameterList = new List <Int3264>(parameters);
for (int i = 0; i < procHeaderInfo.NumberOfParams; i++)
{
RpceParameterAttributes parameterFlags = (RpceParameterAttributes)BitConverter.ToUInt16(procFormatString, offset);
offset += sizeof(RpceParameterAttributes);
offset += sizeof(ushort); //skip stack size/top
ushort parameterTypeFormatStringOffset = BitConverter.ToUInt16(procFormatString, offset);
offset += sizeof(ushort); //move to next parameter.
bool sameDirection = (isClient
? (parameterFlags & RpceParameterAttributes.IsOut)
: (parameterFlags & RpceParameterAttributes.IsIn)) != 0;
if (!sameDirection)
{
continue;
}
if ((parameterFlags & RpceParameterAttributes.IsPipe) != 0)
{
continue;
}
if (!isClient && (parameterFlags & RpceParameterAttributes.IsPartialIgnore) != 0)
{
parameterList[i] = NdrInt32Unmarshal() != 0 ? 1 : 0;
continue;
}
RpceFormatCharType formatChar;
if ((parameterFlags & RpceParameterAttributes.IsBaseType) != 0)
{
formatChar = (RpceFormatCharType)parameterTypeFormatStringOffset;
}
else
{
formatChar = (RpceFormatCharType)Marshal.ReadByte(
stubDesc.pFormatTypes,
parameterTypeFormatStringOffset);
}
parameterList[i] = NdrUnmarshalRoutines(parameters[i], parameterTypeFormatStringOffset, formatChar);
if ((parameterFlags & RpceParameterAttributes.IsBaseType) != 0 &&
(parameterFlags & RpceParameterAttributes.IsSimpleRef) != 0)
{
IntPtr ptr = Marshal.AllocHGlobal(sizeof(ulong));//ulong is max size of simple type.
FreeMemoryAtDispose(ptr);
Marshal.WriteIntPtr(ptr, parameterList[i]);
parameterList[i] = ptr;
}
}
return(parameterList.ToArray());
}
