/
GXDLMS.cs
4960 lines (4858 loc) · 201 KB
/
GXDLMS.cs
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//
// --------------------------------------------------------------------------
// Gurux Ltd
//
//
//
// Filename: $HeadURL$
//
// Version: $Revision$,
// $Date$
// $Author$
//
// Copyright (c) Gurux Ltd
//
//---------------------------------------------------------------------------
//
// DESCRIPTION
//
// This file is a part of Gurux Device Framework.
//
// Gurux Device Framework is Open Source software; you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; version 2 of the License.
// Gurux Device Framework is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// More information of Gurux products: https://www.gurux.org
//
// This code is licensed under the GNU General Public License v2.
// Full text may be retrieved at http://www.gnu.org/licenses/gpl-2.0.txt
//---------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Gurux.DLMS.Objects;
using Gurux.DLMS.Internal;
using Gurux.DLMS.Enums;
using Gurux.DLMS.Secure;
using Gurux.DLMS.Objects.Italy;
using Gurux.DLMS.Plc.Enums;
using Gurux.DLMS.Objects.Enums;
using Gurux.DLMS.Ecdsa.Enums;
using Gurux.DLMS.Ecdsa;
namespace Gurux.DLMS
{
/// <summary>
/// GXDLMS implements methods to communicate with DLMS/COSEM metering devices.
/// </summary>
sealed class GXDLMS
{
internal static bool UseHdlc(InterfaceType type)
{
return type == InterfaceType.HDLC ||
type == InterfaceType.HdlcWithModeE ||
type == InterfaceType.PlcHdlc;
}
const byte CipheringHeaderSize = 7 + 12 + 3;
internal const int DATA_TYPE_OFFSET = 0xFF0000;
/// <summary>
/// Generates Invoke ID and priority.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <param name="increase">Is invoke ID increased.</param>
/// <returns>Invoke ID and priority.</returns>
static byte GetInvokeIDPriority(GXDLMSSettings settings, bool increase)
{
byte value = 0;
if (settings.Priority == Priority.High)
{
value = 0x80;
}
if (settings.ServiceClass == ServiceClass.Confirmed)
{
value |= 0x40;
}
if (increase)
{
settings.InvokeID = (byte)((settings.InvokeID + 1) & 0xF);
}
value |= (byte)(settings.InvokeID & 0xF);
return value;
}
/// <summary>
/// Generates Invoke ID and priority.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <returns>Invoke ID and priority.</returns>
static UInt32 GetLongInvokeIDPriority(GXDLMSSettings settings)
{
UInt32 value = 0;
if (settings.Priority == Priority.High)
{
value = 0x80000000;
}
if (settings.ServiceClass == ServiceClass.Confirmed)
{
value |= 0x40000000;
}
value |= (UInt32)(settings.longInvokeID & 0xFFFFFF);
++settings.longInvokeID;
return value;
}
/// <summary>
/// Get all COSEM objects.
/// </summary>
/// <param name="availableObjectTypes">List of available COSEM objects.</param>
private static void GetCosemObjects(Dictionary<ObjectType, Type> availableObjectTypes)
{
if (availableObjectTypes.Count == 0)
{
availableObjectTypes.Add(ObjectType.G3PlcMacLayerCounters, typeof(GXDLMSG3PlcMacLayerCounters));
availableObjectTypes.Add(ObjectType.G3Plc6LoWPan, typeof(GXDLMSG3Plc6LoWPan));
availableObjectTypes.Add(ObjectType.G3PlcMacSetup, typeof(GXDLMSG3PlcMacSetup));
availableObjectTypes.Add(ObjectType.IEC14908Diagnostic, typeof(GXDLMSIEC14908Diagnostic));
availableObjectTypes.Add(ObjectType.IEC14908PhysicalStatus, typeof(GXDLMSIEC14908PhysicalStatus));
availableObjectTypes.Add(ObjectType.IEC14908PhysicalSetup, typeof(GXDLMSIEC14908PhysicalSetup));
availableObjectTypes.Add(ObjectType.IEC14908Identification, typeof(GXDLMSIEC14908Identification));
availableObjectTypes.Add(ObjectType.Ip6Setup, typeof(GXDLMSIp6Setup));
availableObjectTypes.Add(ObjectType.SFSKMacCounters, typeof(GXDLMSSFSKMacCounters));
availableObjectTypes.Add(ObjectType.SFSKMacSynchronizationTimeouts, typeof(GXDLMSSFSKMacSynchronizationTimeouts));
availableObjectTypes.Add(ObjectType.SFSKActiveInitiator, typeof(GXDLMSSFSKActiveInitiator));
availableObjectTypes.Add(ObjectType.SFSKPhyMacSetUp, typeof(GXDLMSSFSKPhyMacSetUp));
availableObjectTypes.Add(ObjectType.IecTwistedPairSetup, typeof(GXDLMSIecTwistedPairSetup));
availableObjectTypes.Add(ObjectType.DisconnectControl, typeof(GXDLMSDisconnectControl));
availableObjectTypes.Add(ObjectType.ImageTransfer, typeof(GXDLMSImageTransfer));
availableObjectTypes.Add(ObjectType.Limiter, typeof(GXDLMSLimiter));
availableObjectTypes.Add(ObjectType.MBusClient, typeof(GXDLMSMBusClient));
availableObjectTypes.Add(ObjectType.MBusMasterPortSetup, typeof(GXDLMSMBusMasterPortSetup));
availableObjectTypes.Add(ObjectType.MBusSlavePortSetup, typeof(GXDLMSMBusSlavePortSetup));
availableObjectTypes.Add(ObjectType.MacAddressSetup, typeof(GXDLMSMacAddressSetup));
availableObjectTypes.Add(ObjectType.AssociationLogicalName, typeof(GXDLMSAssociationLogicalName));
availableObjectTypes.Add(ObjectType.AssociationShortName, typeof(GXDLMSAssociationShortName));
availableObjectTypes.Add(ObjectType.AutoAnswer, typeof(GXDLMSAutoAnswer));
availableObjectTypes.Add(ObjectType.DemandRegister, typeof(GXDLMSDemandRegister));
availableObjectTypes.Add(ObjectType.ActionSchedule, typeof(GXDLMSActionSchedule));
availableObjectTypes.Add(ObjectType.ActivityCalendar, typeof(GXDLMSActivityCalendar));
availableObjectTypes.Add(ObjectType.AutoConnect, typeof(GXDLMSAutoConnect));
availableObjectTypes.Add(ObjectType.Clock, typeof(GXDLMSClock));
availableObjectTypes.Add(ObjectType.Data, typeof(GXDLMSData));
availableObjectTypes.Add(ObjectType.ExtendedRegister, typeof(GXDLMSExtendedRegister));
availableObjectTypes.Add(ObjectType.GprsSetup, typeof(GXDLMSGprsSetup));
availableObjectTypes.Add(ObjectType.IecHdlcSetup, typeof(GXDLMSHdlcSetup));
availableObjectTypes.Add(ObjectType.IecLocalPortSetup, typeof(GXDLMSIECLocalPortSetup));
availableObjectTypes.Add(ObjectType.Ip4Setup, typeof(GXDLMSIp4Setup));
availableObjectTypes.Add(ObjectType.ModemConfiguration, typeof(GXDLMSModemConfiguration));
availableObjectTypes.Add(ObjectType.PppSetup, typeof(GXDLMSPppSetup));
availableObjectTypes.Add(ObjectType.ProfileGeneric, typeof(GXDLMSProfileGeneric));
availableObjectTypes.Add(ObjectType.PushSetup, typeof(GXDLMSPushSetup));
availableObjectTypes.Add(ObjectType.Register, typeof(GXDLMSRegister));
availableObjectTypes.Add(ObjectType.RegisterActivation, typeof(GXDLMSRegisterActivation));
availableObjectTypes.Add(ObjectType.RegisterMonitor, typeof(GXDLMSRegisterMonitor));
availableObjectTypes.Add(ObjectType.SapAssignment, typeof(GXDLMSSapAssignment));
availableObjectTypes.Add(ObjectType.Schedule, typeof(GXDLMSSchedule));
availableObjectTypes.Add(ObjectType.ScriptTable, typeof(GXDLMSScriptTable));
availableObjectTypes.Add(ObjectType.SecuritySetup, typeof(GXDLMSSecuritySetup));
availableObjectTypes.Add(ObjectType.SpecialDaysTable, typeof(GXDLMSSpecialDaysTable));
availableObjectTypes.Add(ObjectType.TcpUdpSetup, typeof(GXDLMSTcpUdpSetup));
availableObjectTypes.Add(ObjectType.GSMDiagnostic, typeof(GXDLMSGSMDiagnostic));
availableObjectTypes.Add(ObjectType.Account, typeof(GXDLMSAccount));
availableObjectTypes.Add(ObjectType.Credit, typeof(GXDLMSCredit));
availableObjectTypes.Add(ObjectType.Charge, typeof(GXDLMSCharge));
availableObjectTypes.Add(ObjectType.TokenGateway, typeof(GXDLMSTokenGateway));
availableObjectTypes.Add(ObjectType.ParameterMonitor, typeof(GXDLMSParameterMonitor));
availableObjectTypes.Add(ObjectType.CompactData, typeof(GXDLMSCompactData));
availableObjectTypes.Add(ObjectType.WirelessModeQchannel, typeof(GXDLMSWirelessModeQchannel));
availableObjectTypes.Add(ObjectType.UtilityTables, typeof(GXDLMSUtilityTables));
availableObjectTypes.Add(ObjectType.LlcSscsSetup, typeof(GXDLMSLlcSscsSetup));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcPhysicalLayerCounters, typeof(GXDLMSPrimeNbOfdmPlcPhysicalLayerCounters));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcMacSetup, typeof(GXDLMSPrimeNbOfdmPlcMacSetup));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcMacFunctionalParameters, typeof(GXDLMSPrimeNbOfdmPlcMacFunctionalParameters));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcMacCounters, typeof(GXDLMSPrimeNbOfdmPlcMacCounters));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcMacNetworkAdministrationData, typeof(GXDLMSPrimeNbOfdmPlcMacNetworkAdministrationData));
availableObjectTypes.Add(ObjectType.PrimeNbOfdmPlcApplicationsIdentification, typeof(GXDLMSPrimeNbOfdmPlcApplicationsIdentification));
availableObjectTypes.Add(ObjectType.Iec8802LlcType1Setup, typeof(GXDLMSIec8802LlcType1Setup));
availableObjectTypes.Add(ObjectType.Iec8802LlcType2Setup, typeof(GXDLMSIec8802LlcType2Setup));
availableObjectTypes.Add(ObjectType.Iec8802LlcType3Setup, typeof(GXDLMSIec8802LlcType3Setup));
availableObjectTypes.Add(ObjectType.SFSKReportingSystemList, typeof(GXDLMSSFSKReportingSystemList));
availableObjectTypes.Add(ObjectType.Arbitrator, typeof(GXDLMSArbitrator));
//Italian standard uses this.
availableObjectTypes.Add(ObjectType.TariffPlan, typeof(GXDLMSTariffPlan));
}
}
/// <summary>
/// Returns object types.
/// </summary>
/// <returns></returns>
/// <remarks>
/// This can be used with serialization.
/// </remarks>
public static Type[] GetObjectTypes(Dictionary<ObjectType, Type> availableObjectTypes)
{
lock (availableObjectTypes)
{
GetCosemObjects(availableObjectTypes);
List<Type> types = new List<Type>();
types.AddRange(availableObjectTypes.Values);
//This is removed later.
types.Add(typeof(GXDLMSIECOpticalPortSetup));
return types.ToArray();
}
}
/// <summary>
/// Returns object types.
/// </summary>
/// <returns></returns>
/// <remarks>
/// This can be used with serialization.
/// </remarks>
public static ObjectType[] GetObjectTypes2(Dictionary<ObjectType, Type> availableObjectTypes)
{
lock (availableObjectTypes)
{
GetCosemObjects(availableObjectTypes);
return availableObjectTypes.Keys.ToArray();
}
}
/// <summary>
/// Get available COSEM objects.
/// </summary>
/// <param name="availableObjectTypes"></param>
internal static void GetAvailableObjects(Dictionary<ObjectType, Type> availableObjectTypes)
{
lock (availableObjectTypes)
{
GetObjectTypes(availableObjectTypes);
}
}
internal static GXDLMSObject CreateObject(ObjectType type, Dictionary<ObjectType, Type> availableObjectTypes)
{
lock (availableObjectTypes)
{
//Update objects.
if (availableObjectTypes.Count == 0)
{
GetObjectTypes(availableObjectTypes);
}
if (availableObjectTypes.ContainsKey(type))
{
return Activator.CreateInstance(availableObjectTypes[type]) as GXDLMSObject;
}
}
GXDLMSObject obj = new GXDLMSObject();
obj.ObjectType = type;
return obj;
}
///<summary>
///Generates an acknowledgment message, with which the server is informed to send next packets.
///</summary>
///<param name="type">
/// Frame type.
/// </param>
///<returns>
///Acknowledgment message as byte array.
///</returns>
internal static byte[] ReceiverReady(GXDLMSSettings settings, RequestTypes type)
{
GXReplyData reply = new GXReplyData() { MoreData = type };
reply.WindowSize = settings.WindowSize;
reply.BlockNumberAck = settings.BlockNumberAck;
reply.BlockNumber = (UInt16)settings.BlockIndex;
return ReceiverReady(settings, reply);
}
///<summary>
///Generates an acknowledgment message, with which the server is informed to send next packets.
///</summary>
///<param name="reply">Reply data.</param>
///<returns>
///Acknowledgment message as byte array.
///</returns>
internal static byte[] ReceiverReady(GXDLMSSettings settings, GXReplyData reply)
{
if (reply.MoreData == RequestTypes.None)
{
//Generate RR.
byte id = settings.KeepAlive();
if (settings.InterfaceType == InterfaceType.PlcHdlc)
{
return GXDLMS.GetMacHdlcFrame(settings, id, 0, null);
}
return GetHdlcFrame(settings, id, null);
}
// Get next frame.
if ((reply.MoreData & RequestTypes.Frame) != 0)
{
byte id = settings.ReceiverReady();
if (settings.InterfaceType == InterfaceType.PlcHdlc)
{
return GXDLMS.GetMacHdlcFrame(settings, id, 0, null);
}
return GetHdlcFrame(settings, id, null);
}
Command cmd;
if (settings.UseLogicalNameReferencing)
{
if (settings.IsServer)
{
cmd = Command.GetResponse;
}
else
{
cmd = Command.GetRequest;
}
}
else
{
if (settings.IsServer)
{
cmd = Command.ReadResponse;
}
else
{
cmd = Command.ReadRequest;
}
}
// Get next block.
byte[][] data;
if (reply.MoreData == RequestTypes.GBT)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, 0, Command.GeneralBlockTransfer, 0, null, null, 0xff, Command.None);
p.WindowSize = reply.WindowSize;
p.blockNumberAck = reply.BlockNumberAck;
p.blockIndex = reply.BlockNumber;
p.Streaming = false;
data = GXDLMS.GetLnMessages(p);
}
else
{
// Get next block.
GXByteBuffer bb = new GXByteBuffer(4);
if (settings.UseLogicalNameReferencing)
{
bb.SetUInt32(settings.BlockIndex);
}
else
{
bb.SetUInt16((UInt16)settings.BlockIndex);
}
settings.IncreaseBlockIndex();
if (settings.UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, 0, cmd, (byte)GetCommandType.NextDataBlock, bb, null, 0xff, Command.None);
data = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, cmd, 1, (byte)VariableAccessSpecification.BlockNumberAccess, bb, null);
data = GXDLMS.GetSnMessages(p);
}
}
return data[0];
}
/// <summary>
/// Get error description.
/// </summary>
/// <param name="error">Error number.</param>
/// <returns>Error as plain text.</returns>
internal static string GetDescription(ErrorCode error)
{
#if !WINDOWS_UWP && !__MOBILE__
string str = null;
switch (error)
{
case ErrorCode.Ok:
str = "";
break;
case ErrorCode.Rejected:
str = Properties.Resources.Rejected;
break;
case ErrorCode.UnacceptableFrame:
str = Properties.Resources.UnacceptableFrame;
break;
case ErrorCode.DisconnectMode:
str = Properties.Resources.DisconnectMode;
break;
case ErrorCode.HardwareFault: //Access Error : Device reports a hardware fault
str = Gurux.DLMS.Properties.Resources.HardwareFaultTxt;
break;
case ErrorCode.TemporaryFailure: //Access Error : Device reports a temporary failure
str = Gurux.DLMS.Properties.Resources.TemporaryFailureTxt;
break;
case ErrorCode.ReadWriteDenied: // Access Error : Device reports Read-Write denied
str = Gurux.DLMS.Properties.Resources.ReadWriteDeniedTxt;
break;
case ErrorCode.UndefinedObject: // Access Error : Device reports a undefined object
str = Gurux.DLMS.Properties.Resources.UndefinedObjectTxt;
break;
case ErrorCode.InconsistentClass: // Access Error : Device reports a inconsistent Class or object
str = Gurux.DLMS.Properties.Resources.InconsistentClassTxt;
break;
case ErrorCode.UnavailableObject: // Access Error : Device reports a unavailable object
str = Gurux.DLMS.Properties.Resources.UnavailableObjectTxt;
break;
case ErrorCode.UnmatchedType: // Access Error : Device reports a unmatched type
str = Gurux.DLMS.Properties.Resources.UnmatchedTypeTxt;
break;
case ErrorCode.AccessViolated: // Access Error : Device reports scope of access violated
str = Gurux.DLMS.Properties.Resources.AccessViolatedTxt;
break;
case ErrorCode.DataBlockUnavailable: // Access Error : Data Block Unavailable.
str = Gurux.DLMS.Properties.Resources.DataBlockUnavailableTxt;
break;
case ErrorCode.LongGetOrReadAborted: // Access Error : Long Get Or Read Aborted.
str = Gurux.DLMS.Properties.Resources.LongGetOrReadAbortedTxt;
break;
case ErrorCode.NoLongGetOrReadInProgress: // Access Error : No Long Get Or Read In Progress.
str = Gurux.DLMS.Properties.Resources.NoLongGetOrReadInProgressTxt;
break;
case ErrorCode.LongSetOrWriteAborted: // Access Error : Long Set Or Write Aborted.
str = Gurux.DLMS.Properties.Resources.LongSetOrWriteAbortedTxt;
break;
case ErrorCode.NoLongSetOrWriteInProgress: // Access Error : No Long Set Or Write In Progress.
str = Gurux.DLMS.Properties.Resources.NoLongSetOrWriteInProgressTxt;
break;
case ErrorCode.DataBlockNumberInvalid: // Access Error : Data Block Number Invalid.
str = Gurux.DLMS.Properties.Resources.DataBlockNumberInvalidTxt;
break;
case ErrorCode.OtherReason: // Access Error : Other Reason.
str = Gurux.DLMS.Properties.Resources.OtherReasonTxt;
break;
default:
str = Gurux.DLMS.Properties.Resources.UnknownErrorTxt;
break;
}
return str;
#else
#if WINDOWS_UWP
return error.ToString();
#endif //WINDOWS_UWP
#if __MOBILE__
string str = null;
switch (error)
{
case ErrorCode.Ok:
str = "";
break;
case ErrorCode.Rejected:
str = Resources.Rejected;
break;
case ErrorCode.UnacceptableFrame:
str = Resources.UnacceptableFrame;
break;
case ErrorCode.DisconnectMode:
str = Resources.DisconnectMode;
break;
case ErrorCode.HardwareFault: //Access Error : Device reports a hardware fault
str = Resources.HardwareFaultTxt;
break;
case ErrorCode.TemporaryFailure: //Access Error : Device reports a temporary failure
str = Resources.TemporaryFailureTxt;
break;
case ErrorCode.ReadWriteDenied: // Access Error : Device reports Read-Write denied
str = Resources.ReadWriteDeniedTxt;
break;
case ErrorCode.UndefinedObject: // Access Error : Device reports a undefined object
str = Resources.UndefinedObjectTxt;
break;
case ErrorCode.InconsistentClass: // Access Error : Device reports a inconsistent Class or object
str = Resources.InconsistentClassTxt;
break;
case ErrorCode.UnavailableObject: // Access Error : Device reports a unavailable object
str = Resources.UnavailableObjectTxt;
break;
case ErrorCode.UnmatchedType: // Access Error : Device reports a unmatched type
str = Resources.UnmatchedTypeTxt;
break;
case ErrorCode.AccessViolated: // Access Error : Device reports scope of access violated
str = Resources.AccessViolatedTxt;
break;
case ErrorCode.DataBlockUnavailable: // Access Error : Data Block Unavailable.
str = Resources.DataBlockUnavailableTxt;
break;
case ErrorCode.LongGetOrReadAborted: // Access Error : Long Get Or Read Aborted.
str = Resources.LongGetOrReadAbortedTxt;
break;
case ErrorCode.NoLongGetOrReadInProgress: // Access Error : No Long Get Or Read In Progress.
str = Resources.NoLongGetOrReadInProgressTxt;
break;
case ErrorCode.LongSetOrWriteAborted: // Access Error : Long Set Or Write Aborted.
str = Resources.LongSetOrWriteAbortedTxt;
break;
case ErrorCode.NoLongSetOrWriteInProgress: // Access Error : No Long Set Or Write In Progress.
str = Resources.NoLongSetOrWriteInProgressTxt;
break;
case ErrorCode.DataBlockNumberInvalid: // Access Error : Data Block Number Invalid.
str = Resources.DataBlockNumberInvalidTxt;
break;
case ErrorCode.OtherReason: // Access Error : Other Reason.
str = Resources.OtherReasonTxt;
break;
default:
str = Resources.UnknownErrorTxt;
break;
}
return str;
#endif //__MOBILE__
#endif
}
/// <summary>
/// Reserved for internal use.
/// </summary>
/// <param name="settings">DLMS settings.</param>
internal static void CheckInit(GXDLMSSettings settings)
{
if (settings.InterfaceType != InterfaceType.PDU)
{
if (settings.ClientAddress == 0)
{
throw new ArgumentException("Invalid Client Address");
}
if (settings.ServerAddress == 0)
{
throw new ArgumentException("Invalid Server Address");
}
}
}
internal static void AppendData(GXDLMSSettings settings, GXDLMSObject obj, int index, GXByteBuffer bb, Object value)
{
DataType tp = obj.GetDataType(index);
if (tp == DataType.Array)
{
if (value is byte[])
{
bb.Set((byte[])value);
return;
}
else if (value is GXByteBuffer)
{
bb.Set((GXByteBuffer)value);
return;
}
}
else
{
if (tp == DataType.None)
{
tp = GXDLMSConverter.GetDLMSDataType(value);
}
else if (tp == DataType.OctetString && value is string)
{
DataType ui = obj.GetUIDataType(index);
if (ui == DataType.String)
{
value = ASCIIEncoding.ASCII.GetBytes((string)value);
}
else if (ui == DataType.OctetString)
{
value = GXDLMSTranslator.HexToBytes((string)value);
}
}
}
GXCommon.SetData(settings, bb, tp, value);
}
/// <summary>
/// Get used glo message.
/// </summary>
/// <param name="cmd">Executed command.</param>
/// <returns>Integer value of glo message.</returns>
private static byte GetGloMessage(Command cmd)
{
switch (cmd)
{
case Command.ReadRequest:
cmd = Command.GloReadRequest;
break;
case Command.GetRequest:
cmd = Command.GloGetRequest;
break;
case Command.WriteRequest:
cmd = Command.GloWriteRequest;
break;
case Command.SetRequest:
cmd = Command.GloSetRequest;
break;
case Command.MethodRequest:
cmd = Command.GloMethodRequest;
break;
case Command.ReadResponse:
cmd = Command.GloReadResponse;
break;
case Command.GetResponse:
cmd = Command.GloGetResponse;
break;
case Command.WriteResponse:
cmd = Command.GloWriteResponse;
break;
case Command.SetResponse:
cmd = Command.GloSetResponse;
break;
case Command.MethodResponse:
cmd = Command.GloMethodResponse;
break;
case Command.DataNotification:
cmd = Command.GeneralGloCiphering;
break;
case Command.ReleaseRequest:
cmd = Command.ReleaseRequest;
break;
case Command.ReleaseResponse:
cmd = Command.ReleaseResponse;
break;
default:
throw new GXDLMSException("Invalid GLO command.");
}
return (byte)cmd;
}
/// <summary>
/// Get used ded message.
/// </summary>
/// <param name="cmd">Executed command.</param>
/// <returns>Integer value of ded message.</returns>
private static byte GetDedMessage(Command cmd)
{
switch (cmd)
{
case Command.GetRequest:
cmd = Command.DedGetRequest;
break;
case Command.SetRequest:
cmd = Command.DedSetRequest;
break;
case Command.MethodRequest:
cmd = Command.DedMethodRequest;
break;
case Command.GetResponse:
cmd = Command.DedGetResponse;
break;
case Command.SetResponse:
cmd = Command.DedSetResponse;
break;
case Command.MethodResponse:
cmd = Command.DedMethodResponse;
break;
case Command.DataNotification:
cmd = Command.GeneralDedCiphering;
break;
case Command.ReleaseRequest:
cmd = Command.ReleaseRequest;
break;
case Command.ReleaseResponse:
cmd = Command.ReleaseResponse;
break;
default:
throw new GXDLMSException("Invalid DED command.");
}
return (byte)cmd;
}
/// <summary>
/// Add LLC bytes to generated message.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <param name="data">Data where bytes are added.</param>
private static void AddLLCBytes(GXDLMSSettings settings, GXByteBuffer data)
{
if (settings.IsServer)
{
data.Set(0, GXCommon.LLCReplyBytes);
}
else
{
data.Set(0, GXCommon.LLCSendBytes);
}
}
/// <summary>
/// Check is all data fit to one data block.
/// </summary>
/// <param name="p">LN parameters.</param>
/// <param name="reply">Generated reply.</param>
private static void MultipleBlocks(GXDLMSLNParameters p, GXByteBuffer reply, bool ciphering)
{
//Check is all data fit to one message if data is given.
int len = 0;
if (p.data != null)
{
len = p.data.Available;
}
if (p.attributeDescriptor != null)
{
len += p.attributeDescriptor.Size;
}
if (ciphering)
{
len += CipheringHeaderSize;
}
if (!p.multipleBlocks)
{
//Add command type and invoke and priority.
p.multipleBlocks = 2 + reply.Size + len > p.settings.MaxPduSize;
}
if (p.multipleBlocks)
{
//Add command type and invoke and priority.
p.lastBlock = !(8 + reply.Available + len > p.settings.MaxPduSize);
}
if (p.lastBlock)
{
//Add command type and invoke and priority.
p.lastBlock = !(8 + reply.Available + len > p.settings.MaxPduSize);
}
}
static bool IsGloMessage(Command cmd)
{
return cmd == Command.GloGetRequest || cmd == Command.GloSetRequest || cmd == Command.GloMethodRequest;
}
private static byte[] GetBlockCipherKey(GXDLMSSettings settings)
{
if (settings.EphemeralBlockCipherKey != null)
{
return settings.EphemeralBlockCipherKey;
}
return settings.Cipher.BlockCipherKey;
}
private static byte[] GetAuthenticationKey(GXDLMSSettings settings)
{
if (settings.EphemeralAuthenticationKey != null)
{
return settings.EphemeralAuthenticationKey;
}
return settings.Cipher.AuthenticationKey;
}
internal static byte[] Cipher0(GXDLMSLNParameters p, byte[] data)
{
byte cmd;
byte[] key;
GXICipher cipher = p.settings.Cipher;
//If client.
if (p.cipheredCommand == Command.None)
{
//General protection can be used with pre-established connections.
if (((p.settings.Connected & ConnectionState.Dlms) == 0 ||
(p.settings.NegotiatedConformance & Conformance.GeneralProtection) == 0) &&
(p.settings.PreEstablishedSystemTitle == null || p.settings.PreEstablishedSystemTitle.Length == 0 || (p.settings.ProposedConformance & Conformance.GeneralProtection) == 0))
{
if (cipher.DedicatedKey != null && (p.settings.Connected & ConnectionState.Dlms) != 0)
{
cmd = GetDedMessage(p.command);
key = cipher.DedicatedKey;
}
else
{
cmd = GetGloMessage(p.command);
key = GetBlockCipherKey(p.settings);
}
}
else
{
if (p.settings.Cipher.DedicatedKey != null)
{
cmd = (byte)Command.GeneralDedCiphering;
key = cipher.DedicatedKey;
}
else
{
cmd = (byte)Command.GeneralGloCiphering;
key = GetBlockCipherKey(p.settings);
}
}
}
else //If server.
{
if (p.cipheredCommand == Command.GeneralDedCiphering)
{
cmd = (byte)Command.GeneralDedCiphering;
key = cipher.DedicatedKey;
}
else if (p.cipheredCommand == Command.GeneralGloCiphering)
{
cmd = (byte)Command.GeneralGloCiphering;
key = GetBlockCipherKey(p.settings);
}
else if (IsGloMessage(p.cipheredCommand))
{
cmd = (byte)GetGloMessage(p.command);
key = GetBlockCipherKey(p.settings);
}
else
{
cmd = (byte)GetDedMessage(p.command);
key = cipher.DedicatedKey;
}
}
AesGcmParameter s = new AesGcmParameter(cmd,
cipher.Security,
cipher.SecuritySuite,
cipher.InvocationCounter,
cipher.SystemTitle,
key,
GetAuthenticationKey(p.settings));
s.IgnoreSystemTitle = p.settings.Standard == Standard.Italy;
byte[] tmp = GXCiphering.Encrypt(s, data);
++cipher.InvocationCounter;
return tmp;
}
/**
* Cipher using security suite 1 or 2.
*
* @param p
* LN settings.
* @param data
* Data to encrypt.
*/
private static byte[] Cipher1(GXDLMSLNParameters p, byte[] data)
{
byte keyid = (byte)p.settings.Cipher.KeyAgreementScheme;
GXICipher c = p.settings.Cipher;
byte sc;
if (p.settings.SourceSystemTitle == null)
{
throw new ArgumentOutOfRangeException("Invalid Recipient System Title.");
}
if (c.SystemTitle == null)
{
throw new ArgumentOutOfRangeException("Invalid System Title.");
}
switch (c.Security)
{
case Security.Authentication:
sc = 0x10;
break;
case Security.AuthenticationEncryption:
sc = 0x30;
break;
case Security.Encryption:
sc = 0x20;
break;
default:
throw new ArgumentOutOfRangeException("Invalid security.");
}
AlgorithmId algorithmID;
switch (c.SecuritySuite)
{
case SecuritySuite.Ecdsa256:
algorithmID = AlgorithmId.AesGcm128;
sc |= 1;
break;
case SecuritySuite.Ecdsa384:
algorithmID = AlgorithmId.AesGcm256;
sc |= 2;
break;
default:
throw new ArgumentOutOfRangeException("Invalid security suite.");
}
GXByteBuffer tmp2 = new GXByteBuffer();
byte[] z;
if (keyid == 1)
{
//Generate ephemeral key pair for each transaction.
c.EphemeralKeyPair = GXEcdsa.GenerateKeyPair(c.SecuritySuite == SecuritySuite.Ecdsa256 ? Ecc.P256 : Ecc.P384);
GXEcdsa ka = new GXEcdsa(c.EphemeralKeyPair.Key);
System.Diagnostics.Debug.WriteLine("Private ephemeral: " + c.EphemeralKeyPair.Key.ToHex());
System.Diagnostics.Debug.WriteLine("Public agreement key: " + c.KeyAgreementKeyPair.Value.ToHex());
z = ka.GenerateSecret(c.KeyAgreementKeyPair.Value);
}
else if (keyid == 2)
{
System.Diagnostics.Debug.WriteLine("Private ephemeral: " + c.KeyAgreementKeyPair.Key.ToHex());
System.Diagnostics.Debug.WriteLine("Public agreement key: " + c.KeyAgreementKeyPair.Value.ToHex());
GXEcdsa ka = new GXEcdsa(c.KeyAgreementKeyPair.Key);
z = ka.GenerateSecret(c.KeyAgreementKeyPair.Value);
tmp2.SetUInt8(0x8);
tmp2.SetUInt64(c.InvocationCounter);
}
else
{
throw new ArgumentOutOfRangeException("Invalid key-id.");
}
tmp2.Set(p.settings.SourceSystemTitle);
System.Diagnostics.Debug.WriteLine("Shared secret: " + GXCommon.ToHex(z, true));
GXByteBuffer kdf = new GXByteBuffer();
kdf.Set(GXSecure.GenerateKDF(c.SecuritySuite, z, algorithmID, c.SystemTitle, tmp2.Array(), null, null));
System.Diagnostics.Debug.WriteLine("kdf: " + kdf.ToString());
AesGcmParameter s = new AesGcmParameter(0x31,
p.settings,
c.Security,
c.SecuritySuite, 0,
// KDF
kdf.SubArray(0, 16),
// Authentication key.
c.AuthenticationKey,
// Originator system title.
c.SystemTitle,
// recipient system title.
p.settings.SourceSystemTitle,
// Date time
null,
// Other information.
null);
GXByteBuffer reply = new GXByteBuffer();
reply.SetUInt8(Command.GeneralCiphering);
GXCommon.SetObjectCount(8, reply);
reply.SetUInt64(c.InvocationCounter);
GXCommon.SetObjectCount(s.SystemTitle.Length, reply);
reply.Set(s.SystemTitle);
GXCommon.SetObjectCount(s.RecipientSystemTitle.Length, reply);
reply.Set(s.RecipientSystemTitle);
// date-time not present.
reply.SetUInt8(0);
// other-information not present
reply.SetUInt8(0);
// optional flag
reply.SetUInt8(1);
// agreed-key CHOICE
reply.SetUInt8(2);
// key-parameters
reply.SetUInt8(1);
reply.SetUInt8(keyid);
if (keyid == 1)
{
// key-ciphered-data
GXCommon.SetObjectCount(0x80, reply);
// Ephemeral public key client.
reply.Set(c.EphemeralKeyPair.Value.RawValue, 1, c.EphemeralKeyPair.Value.RawValue.Length - 1);
// Ephemeral Public Key Signature.
reply.Set(GXSecure.GetEphemeralPublicKeySignature(keyid,
c.EphemeralKeyPair.Value, c.SigningKeyPair.Key));
}
else
{
reply.SetUInt8(0);
}
// ciphered-content
s.Type = (CountType.Data | CountType.Tag);
System.Diagnostics.Debug.WriteLine("Data: " + GXDLMSTranslator.ToHex(data));
byte[] tmp = GXCiphering.Encrypt(s, data);
// Len
GXCommon.SetObjectCount(5 + tmp.Length, reply);
// Add SC
reply.SetUInt8(sc);
// Add IC.
reply.SetUInt32(0);
reply.Set(tmp);
System.Diagnostics.Debug.WriteLine("Encrypted:" + reply.ToString());
return reply.Array();
}
/// <summary>
/// Get next logical name PDU.
/// </summary>
/// <param name="p">LN parameters.</param>
/// <param name="reply">Generated message.</param>
internal static void GetLNPdu(GXDLMSLNParameters p, GXByteBuffer reply)
{
bool ciphering = p.command != Command.Aarq && p.command != Command.Aare && p.settings.Cipher != null &&
(p.settings.Cipher.Security != Security.None || p.cipheredCommand != Command.None);
int len = 0;
if (p.command == Command.Aarq)
{
if (p.settings.Gateway != null && p.settings.Gateway.PhysicalDeviceAddress != null)
{
reply.SetUInt8(Command.GatewayRequest);
reply.SetUInt8(p.settings.Gateway.NetworkId);
reply.SetUInt8((byte)p.settings.Gateway.PhysicalDeviceAddress.Length);
reply.Set(p.settings.Gateway.PhysicalDeviceAddress);
}
reply.Set(p.attributeDescriptor);
}
else
{
// Add command.
if (p.command != Command.GeneralBlockTransfer)
{
reply.SetUInt8((byte)p.command);
}
if (p.command == Command.EventNotification ||
p.command == Command.DataNotification ||
p.command == Command.AccessRequest ||
p.command == Command.AccessResponse)
{