public void HandleMethodCall (MethodCall method_call)
		{
			Type type = obj.GetType ();
			//object retObj = type.InvokeMember (msg.Member, BindingFlags.InvokeMethod, null, obj, MessageHelper.GetDynamicValues (msg));

			//TODO: there is no member name mapping for properties etc. yet
			MethodInfo mi = Mapper.GetMethod (type, method_call);

			if (mi == null) {
				conn.MaybeSendUnknownMethodError (method_call);
				return;
			}

			object retObj = null;
			try {
				object[] inArgs = MessageHelper.GetDynamicValues (method_call.message, mi.GetParameters ());
				retObj = mi.Invoke (obj, inArgs);
			} catch (TargetInvocationException e) {
				if (!method_call.message.ReplyExpected)
					return;

				Exception ie = e.InnerException;
				//TODO: complete exception sending support

				Error error = new Error (Mapper.GetInterfaceName (ie.GetType ()), method_call.message.Header.Serial);
				error.message.Signature = new Signature (DType.String);

				MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
				writer.connection = conn;
				writer.Write (ie.Message);
				error.message.Body = writer.ToArray ();

				//TODO: we should be more strict here, but this fallback was added as a quick fix for p2p
				if (method_call.Sender != null)
					error.message.Header.Fields[FieldCode.Destination] = method_call.Sender;

				conn.Send (error.message);
				return;
			}

			if (method_call.message.ReplyExpected) {
				/*
				object[] retObjs;

				if (retObj == null) {
					retObjs = new object[0];
				} else {
					retObjs = new object[1];
					retObjs[0] = retObj;
				}

				Message reply = ConstructReplyFor (method_call, retObjs);
				*/
				Message reply = MessageHelper.ConstructReplyFor (method_call, mi.ReturnType, retObj);
				conn.Send (reply);
			}
		}
Example #2
0
		public byte[] GetHeaderData ()
		{
			if (Body != null)
				Header.Length = (uint)Body.Length;

			MessageWriter writer = new MessageWriter (Header.Endianness);
			writer.WriteValueType (Header, typeof (Header));
			writer.CloseWrite ();

			return writer.ToArray ();
		}
Example #3
0
		public void SendSignal (string iface, string member, string inSigStr, MessageWriter writer, Type retType, out Exception exception)
		{
			exception = null;

			//TODO: don't ignore retVal, exception etc.

			Signature outSig = String.IsNullOrEmpty (inSigStr) ? Signature.Empty : new Signature (inSigStr);

			Signal signal = new Signal (object_path, iface, member);
			signal.message.Signature = outSig;

			Message signalMsg = signal.message;
			signalMsg.Body = writer.ToArray ();

			conn.Send (signalMsg);
		}
Example #4
0
		public static Message ConstructDynamicReply (MethodCall method_call, MethodInfo mi, object retVal, object[] vals)
		{
			Type retType = mi.ReturnType;

			MethodReturn method_return = new MethodReturn (method_call.message.Header.Serial);
			Message replyMsg = method_return.message;

			Signature outSig = Signature.GetSig (retType);
			outSig += Signature.GetSig (Mapper.GetTypes (ArgDirection.Out, mi.GetParameters ()));

			if (outSig != Signature.Empty) {
				MessageWriter writer = new MessageWriter (Connection.NativeEndianness);

				//first write the return value, if any
				if (retType != null && retType != typeof (void))
					writer.Write (retType, retVal);

				//then write the out args
				WriteDynamicValues (writer, mi.GetParameters (), vals);

				replyMsg.Body = writer.ToArray ();
			}

			//TODO: we should be more strict here, but this fallback was added as a quick fix for p2p
			if (method_call.Sender != null)
				replyMsg.Header.Fields[FieldCode.Destination] = method_call.Sender;

			replyMsg.Signature = outSig;

			return replyMsg;
		}
Example #5
0
		public static Message ConstructReply (MethodCall method_call, params object[] vals)
		{
			MethodReturn method_return = new MethodReturn (method_call.message.Header.Serial);
			Message replyMsg = method_return.message;

			Signature inSig = Signature.GetSig (vals);

			if (vals != null && vals.Length != 0) {
				MessageWriter writer = new MessageWriter (Connection.NativeEndianness);

				foreach (object arg in vals)
					writer.Write (arg.GetType (), arg);

				replyMsg.Body = writer.ToArray ();
			}

			//TODO: we should be more strict here, but this fallback was added as a quick fix for p2p
			if (method_call.Sender != null)
				replyMsg.Header.Fields[FieldCode.Destination] = method_call.Sender;

			replyMsg.Signature = inSig;

			//replyMsg.WriteHeader ();

			return replyMsg;
		}
Example #6
0
		public static void WriteDynamicValues (MessageWriter mw, ParameterInfo[] parms, object[] vals)
		{
			foreach (ParameterInfo parm in parms) {
				if (!parm.IsOut)
					continue;

				Type actualType = parm.ParameterType.GetElementType ();
				mw.Write (actualType, vals[parm.Position]);
			}
		}
Example #7
0
		public static Message CreateUnknownMethodError (MethodCall method_call)
		{
			if (!method_call.message.ReplyExpected)
				return null;

			string errMsg = String.Format ("Method \"{0}\" with signature \"{1}\" on interface \"{2}\" doesn't exist", method_call.Member, method_call.Signature.Value, method_call.Interface);

			Error error = new Error ("org.freedesktop.DBus.Error.UnknownMethod", method_call.message.Header.Serial);
			error.message.Signature = new Signature (DType.String);

			MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
			writer.Write (errMsg);
			error.message.Body = writer.ToArray ();

			//TODO: we should be more strict here, but this fallback was added as a quick fix for p2p
			if (method_call.Sender != null)
				error.message.Header.Fields[FieldCode.Destination] = method_call.Sender;

			return error.message;
		}
Example #8
0
		public object SendMethodCall (string iface, string member, string inSigStr, MessageWriter writer, Type retType, out Exception exception)
		{
			exception = null;

			//TODO: don't ignore retVal, exception etc.

			Signature inSig = String.IsNullOrEmpty (inSigStr) ? Signature.Empty : new Signature (inSigStr);

			MethodCall method_call = new MethodCall (object_path, iface, member, bus_name, inSig);

			Message callMsg = method_call.message;
			callMsg.Body = writer.ToArray ();

			//Invoke Code::

			//TODO: complete out parameter support
			/*
			Type[] outParmTypes = Mapper.GetTypes (ArgDirection.Out, mi.GetParameters ());
			Signature outParmSig = Signature.GetSig (outParmTypes);

			if (outParmSig != Signature.Empty)
				throw new Exception ("Out parameters not yet supported: out_signature='" + outParmSig.Value + "'");
			*/

			Type[] outTypes = new Type[1];
			outTypes[0] = retType;

			//we default to always requiring replies for now, even though unnecessary
			//this is to make sure errors are handled synchronously
			//TODO: don't hard code this
			bool needsReply = true;

			//if (mi.ReturnType == typeof (void))
			//	needsReply = false;

			callMsg.ReplyExpected = needsReply;
			callMsg.Signature = inSig;

			if (!needsReply) {
				conn.Send (callMsg);
				return null;
			}

#if PROTO_REPLY_SIGNATURE
			if (needsReply) {
				Signature outSig = Signature.GetSig (outTypes);
				callMsg.Header.Fields[FieldCode.ReplySignature] = outSig;
			}
#endif

			Message retMsg = conn.SendWithReplyAndBlock (callMsg);

			object retVal = null;

			//handle the reply message
			switch (retMsg.Header.MessageType) {
				case MessageType.MethodReturn:
				object[] retVals = MessageHelper.GetDynamicValues (retMsg, outTypes);
				if (retVals.Length != 0)
					retVal = retVals[retVals.Length - 1];
				break;
				case MessageType.Error:
				//TODO: typed exceptions
				Error error = new Error (retMsg);
				string errMsg = String.Empty;
				if (retMsg.Signature.Value.StartsWith ("s")) {
					MessageReader reader = new MessageReader (retMsg);
					errMsg = reader.ReadString ();
				}
				exception = new Exception (error.ErrorName + ": " + errMsg);
				break;
				default:
				throw new Exception ("Got unexpected message of type " + retMsg.Header.MessageType + " while waiting for a MethodReturn or Error");
			}

			return retVal;
		}
        //public HeaderField[] Fields;
        /*
        public void SetHeaderData (byte[] data)
        {
            EndianFlag endianness = (EndianFlag)data[0];
            MessageReader reader = new MessageReader (endianness, data);

            Header = (Header)reader.ReadStruct (typeof (Header));
        }
        */
        //TypeWriter<Header> headerWriter = TypeImplementer.GetTypeWriter<Header> ();
        public byte[] GetHeaderData()
        {
            if (Body != null)
                Header.Length = (uint)Body.Length;

            MessageWriter writer = new MessageWriter (Header.Endianness);

            //writer.stream.Capacity = 512;
            //headerWriter (writer, Header);

            writer.Write ((byte)Header.Endianness);
            writer.Write ((byte)Header.MessageType);
            writer.Write ((byte)Header.Flags);
            writer.Write (Header.MajorVersion);
            writer.Write (Header.Length);
            writer.Write (Header.Serial);
            writer.WriteHeaderFields (Header.Fields);

            writer.CloseWrite ();

            return writer.ToArray ();
        }
		public void WriteHeader ()
		{
			if (Body != null)
				Header.Length = (uint)Body.Length;

			MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
			writer.WriteStruct (typeof (Header), Header);
			//writer.WriteFromDict (typeof (FieldCode), typeof (object), Header.Fields);
			writer.CloseWrite ();
			HeaderData = writer.ToArray ();
		}
		public void SendSignal (MethodInfo mi, string @interface, string member, object[] outValues)
		{
			//TODO: make use of bus_name?

			Type[] outTypes = Mapper.GetTypes (ArgDirection.In, mi.GetParameters ());
			Signature outSig = Signature.GetSig (outTypes);

			Signal signal = new Signal (object_path, @interface, member);
			signal.message.Signature = outSig;

			if (outValues != null && outValues.Length != 0) {
				MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
				writer.connection = conn;

				for (int i = 0 ; i != outTypes.Length ; i++)
					writer.Write (outTypes[i], outValues[i]);

				signal.message.Body = writer.ToArray ();
			}

			conn.Send (signal.message);
		}
Example #12
0
		//TODO: merge this with the above method
		public static Message ConstructReplyFor (MethodCall method_call, Type retType, object retVal)
		{
			MethodReturn method_return = new MethodReturn (method_call.message.Header.Serial);
			Message replyMsg = method_return.message;

			Signature inSig = Signature.GetSig (retType);

			if (inSig != Signature.Empty) {
				MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
				writer.Write (retType, retVal);
				replyMsg.Body = writer.ToArray ();
			}

			//TODO: we should be more strict here, but this fallback was added as a quick fix for p2p
			if (method_call.Sender != null)
				replyMsg.Header.Fields[FieldCode.Destination] = method_call.Sender;

			replyMsg.Signature = inSig;

			//replyMsg.WriteHeader ();

			return replyMsg;
		}
        public Error CreateError(string errorName, string errorMessage)
        {
            Error error = new Error (errorName, message.Header.Serial);
            error.message.Signature = Signature.StringSig;

            MessageWriter writer = new MessageWriter (message.Header.Endianness);
            //writer.connection = conn;
            writer.Write (errorMessage);
            error.message.Body = writer.ToArray ();

            //if (method_call.Sender != null)
            //	replyMsg.Header[FieldCode.Destination] = method_call.Sender;

            return error;
        }
        public void GetHeaderDataToStream(Stream stream)
        {
            if (Body != null)
                Header.Length = (uint)Body.Length;

            MessageWriter writer = new MessageWriter (Header.Endianness);

            //headerWriter (writer, Header);

            writer.Write ((byte)Header.Endianness);
            writer.Write ((byte)Header.MessageType);
            writer.Write ((byte)Header.Flags);
            writer.Write (Header.MajorVersion);
            writer.Write (Header.Length);
            writer.Write (Header.Serial);
            writer.WriteHeaderFields (Header.Fields);

            writer.CloseWrite ();

            writer.ToStream (stream);
        }
        void RaiseNameSignal(string memberSuffix, string name)
        {
            // Name* signals on org.freedesktop.DBus are connection-specific.
            // We handle them here as a special case.

            Signal nameSignal = new Signal (Path, DBusInterface, "Name" + memberSuffix);
            MessageWriter mw = new MessageWriter ();
            mw.Write (name);
            nameSignal.message.Body = mw.ToArray ();
            nameSignal.message.Signature = Signature.StringSig;
            Caller.Send (nameSignal.message);
        }
Example #16
0
		public void Invoke (MethodBase methodBase, string methodName, object[] inArgs, out object[] outArgs, out object retVal, out Exception exception)
		{
			outArgs = new object[0];
			retVal = null;
			exception = null;

			MethodInfo mi = methodBase as MethodInfo;

			if (mi != null && mi.IsSpecialName && (methodName.StartsWith ("add_") || methodName.StartsWith ("remove_"))) {
				string[] parts = methodName.Split (new char[]{'_'}, 2);
				string ename = parts[1];
				Delegate dlg = (Delegate)inArgs[0];

				ToggleSignal (Mapper.GetInterfaceName (mi), ename, dlg, parts[0] == "add");

				return;
			}

			Type[] inTypes = Mapper.GetTypes (ArgDirection.In, mi.GetParameters ());
			Signature inSig = Signature.GetSig (inTypes);

			MethodCall method_call;
			Message callMsg;

			//build the outbound method call message
			{
				//this bit is error-prone (no null checking) and will need rewriting when DProxy is replaced
				string iface = null;
				if (mi != null)
					iface = Mapper.GetInterfaceName (mi);

				//map property accessors
				//TODO: this needs to be done properly, not with simple String.Replace
				//note that IsSpecialName is also for event accessors, but we already handled those and returned
				if (mi != null && mi.IsSpecialName) {
					methodName = methodName.Replace ("get_", "Get");
					methodName = methodName.Replace ("set_", "Set");
				}

				method_call = new MethodCall (object_path, iface, methodName, bus_name, inSig);

				callMsg = method_call.message;

				if (inArgs != null && inArgs.Length != 0) {
					MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
					writer.connection = conn;

					for (int i = 0 ; i != inTypes.Length ; i++)
						writer.Write (inTypes[i], inArgs[i]);

					callMsg.Body = writer.ToArray ();
				}
			}

			//TODO: complete out parameter support
			/*
			Type[] outParmTypes = Mapper.GetTypes (ArgDirection.Out, mi.GetParameters ());
			Signature outParmSig = Signature.GetSig (outParmTypes);

			if (outParmSig != Signature.Empty)
				throw new Exception ("Out parameters not yet supported: out_signature='" + outParmSig.Value + "'");
			*/

			Type[] outTypes = new Type[1];
			outTypes[0] = mi.ReturnType;

			//we default to always requiring replies for now, even though unnecessary
			//this is to make sure errors are handled synchronously
			//TODO: don't hard code this
			bool needsReply = true;

			//if (mi.ReturnType == typeof (void))
			//	needsReply = false;

			callMsg.ReplyExpected = needsReply;
			callMsg.Signature = inSig;

			if (!needsReply) {
				conn.Send (callMsg);
				return;
			}

#if PROTO_REPLY_SIGNATURE
			if (needsReply) {
				Signature outSig = Signature.GetSig (outTypes);
				callMsg.Header.Fields[FieldCode.ReplySignature] = outSig;
			}
#endif

			Message retMsg = conn.SendWithReplyAndBlock (callMsg);

			//handle the reply message
			switch (retMsg.Header.MessageType) {
				case MessageType.MethodReturn:
				object[] retVals = MessageHelper.GetDynamicValues (retMsg, outTypes);
				if (retVals.Length != 0)
					retVal = retVals[retVals.Length - 1];
				break;
				case MessageType.Error:
				//TODO: typed exceptions
				Error error = new Error (retMsg);
				string errMsg = String.Empty;
				if (retMsg.Signature.Value.StartsWith ("s")) {
					MessageReader reader = new MessageReader (retMsg);
					errMsg = reader.ReadString ();
				}
				exception = new Exception (error.ErrorName + ": " + errMsg);
				break;
				default:
				throw new Exception ("Got unexpected message of type " + retMsg.Header.MessageType + " while waiting for a MethodReturn or Error");
			}

			return;
		}
        public virtual void HandleMethodCall(MethodCall method_call)
        {
            Type type = obj.GetType ();

            //object retObj = type.InvokeMember (msg.Member, BindingFlags.InvokeMethod, null, obj, MessageHelper.GetDynamicValues (msg));

            //TODO: there is no member name mapping for properties etc. yet

            // FIXME: Inefficient to do this on every call
            MethodInfo mi = Mapper.GetMethod (type, method_call);

            if (mi == null) {
                conn.MaybeSendUnknownMethodError (method_call);
                return;
            }

            MethodCaller2 mCaller;
            if (!mCallers.TryGetValue (mi, out mCaller)) {
                //mCaller = TypeImplementer.GenCaller (mi, obj);
                mCaller = TypeImplementer.GenCaller2 (mi);
                mCallers[mi] = mCaller;
            }

            Signature inSig, outSig;
            TypeImplementer.SigsForMethod (mi, out inSig, out outSig);

            Message msg = method_call.message;
            MessageReader msgReader = new MessageReader (method_call.message);
            MessageWriter retWriter = new MessageWriter ();

            /*
            MessageWriter retWriter = null;
            if (msg.ReplyExpected)
                retWriter = new MessageWriter ();
            */

            Exception raisedException = null;
            try {
                //mCaller (msgReader, method_call.message, retWriter);
                mCaller (obj, msgReader, method_call.message, retWriter);
            } catch (Exception e) {
                raisedException = e;
            }

            if (!msg.ReplyExpected)
                return;

            Message replyMsg;

            if (raisedException == null) {
                MethodReturn method_return = new MethodReturn (msg.Header.Serial);
                replyMsg = method_return.message;
                replyMsg.Body = retWriter.ToArray ();
                replyMsg.Signature = outSig;
            } else {
                Error error;
                // BusException allows precisely formatted Error messages.
                BusException busException = raisedException as BusException;
                if (busException != null)
                    error = method_call.CreateError (busException.ErrorName, busException.ErrorMessage);
                else if (raisedException is ArgumentException && raisedException.TargetSite.Name == mi.Name) {
                    // Name match trick above is a hack since we don't have the resolved MethodInfo.
                    ArgumentException argException = (ArgumentException)raisedException;
                    using (System.IO.StringReader sr = new System.IO.StringReader (argException.Message)) {
                        error = method_call.CreateError ("org.freedesktop.DBus.Error.InvalidArgs", sr.ReadLine ());
                    }
                } else
                    error = method_call.CreateError (Mapper.GetInterfaceName (raisedException.GetType ()), raisedException.Message);

                replyMsg = error.message;
            }

            if (method_call.Sender != null)
                replyMsg.Header[FieldCode.Destination] = method_call.Sender;

            conn.Send (replyMsg);
        }
Example #18
0
        public virtual void HandleMethodCall(MethodCall method_call)
        {
            Type type = obj.GetType();

            //object retObj = type.InvokeMember (msg.Member, BindingFlags.InvokeMethod, null, obj, MessageHelper.GetDynamicValues (msg));

            //TODO: there is no member name mapping for properties etc. yet

            // FIXME: Inefficient to do this on every call
            MethodInfo mi = Mapper.GetMethod(type, method_call);

            if (mi == null)
            {
                conn.MaybeSendUnknownMethodError(method_call);
                return;
            }

            MethodCaller2 mCaller;

            if (!mCallers.TryGetValue(mi, out mCaller))
            {
                //mCaller = TypeImplementer.GenCaller (mi, obj);
                mCaller      = TypeImplementer.GenCaller2(mi);
                mCallers[mi] = mCaller;
            }

            Signature inSig, outSig;

            TypeImplementer.SigsForMethod(mi, out inSig, out outSig);

            Message       msg       = method_call.message;
            MessageReader msgReader = new MessageReader(method_call.message);
            MessageWriter retWriter = new MessageWriter();

            /*
             * MessageWriter retWriter = null;
             * if (msg.ReplyExpected)
             *      retWriter = new MessageWriter ();
             */

            Exception raisedException = null;

            try {
                //mCaller (msgReader, method_call.message, retWriter);
                mCaller(obj, msgReader, method_call.message, retWriter);
            } catch (Exception e) {
                raisedException = e;
            }

            if (!msg.ReplyExpected)
            {
                return;
            }

            Message replyMsg;

            if (raisedException == null)
            {
                MethodReturn method_return = new MethodReturn(msg.Header.Serial);
                replyMsg           = method_return.message;
                replyMsg.Body      = retWriter.ToArray();
                replyMsg.Signature = outSig;
            }
            else
            {
                Error error;
                // BusException allows precisely formatted Error messages.
                BusException busException = raisedException as BusException;
                if (busException != null)
                {
                    error = method_call.CreateError(busException.ErrorName, busException.ErrorMessage);
                }
                else if (raisedException is ArgumentException && raisedException.TargetSite.Name == mi.Name)
                {
                    // Name match trick above is a hack since we don't have the resolved MethodInfo.
                    ArgumentException argException = (ArgumentException)raisedException;
                    using (System.IO.StringReader sr = new System.IO.StringReader(argException.Message)) {
                        error = method_call.CreateError("org.freedesktop.DBus.Error.InvalidArgs", sr.ReadLine());
                    }
                }
                else
                {
                    error = method_call.CreateError(Mapper.GetInterfaceName(raisedException.GetType()), raisedException.Message);
                }

                replyMsg = error.message;
            }

            if (method_call.Sender != null)
            {
                replyMsg.Header[FieldCode.Destination] = method_call.Sender;
            }

            conn.Send(replyMsg);
        }